Adds new build system to repo (#1)

src/main/native/cpp/llvm/ConvertUTF.cpp

@@ -0,0 +1,708 @@
+/*===--- ConvertUTF.c - Universal Character Names conversions ---------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ *===------------------------------------------------------------------------=*/
+/*
+ * Copyright 2001-2004 Unicode, Inc.
+ * 
+ * Disclaimer
+ * 
+ * This source code is provided as is by Unicode, Inc. No claims are
+ * made as to fitness for any particular purpose. No warranties of any
+ * kind are expressed or implied. The recipient agrees to determine
+ * applicability of information provided. If this file has been
+ * purchased on magnetic or optical media from Unicode, Inc., the
+ * sole remedy for any claim will be exchange of defective media
+ * within 90 days of receipt.
+ * 
+ * Limitations on Rights to Redistribute This Code
+ * 
+ * Unicode, Inc. hereby grants the right to freely use the information
+ * supplied in this file in the creation of products supporting the
+ * Unicode Standard, and to make copies of this file in any form
+ * for internal or external distribution as long as this notice
+ * remains attached.
+ */
+
+/* ---------------------------------------------------------------------
+
+    Conversions between UTF32, UTF-16, and UTF-8. Source code file.
+    Author: Mark E. Davis, 1994.
+    Rev History: Rick McGowan, fixes & updates May 2001.
+    Sept 2001: fixed const & error conditions per
+        mods suggested by S. Parent & A. Lillich.
+    June 2002: Tim Dodd added detection and handling of incomplete
+        source sequences, enhanced error detection, added casts
+        to eliminate compiler warnings.
+    July 2003: slight mods to back out aggressive FFFE detection.
+    Jan 2004: updated switches in from-UTF8 conversions.
+    Oct 2004: updated to use UNI_MAX_LEGAL_UTF32 in UTF-32 conversions.
+
+    See the header file "ConvertUTF.h" for complete documentation.
+
+------------------------------------------------------------------------ */
+
+
+#include "llvm/ConvertUTF.h"
+#ifdef CVTUTF_DEBUG
+#include <stdio.h>
+#endif
+#include <assert.h>
+
+static const int halfShift  = 10; /* used for shifting by 10 bits */
+
+static const UTF32 halfBase = 0x0010000UL;
+static const UTF32 halfMask = 0x3FFUL;
+
+#define UNI_SUR_HIGH_START  (UTF32)0xD800
+#define UNI_SUR_HIGH_END    (UTF32)0xDBFF
+#define UNI_SUR_LOW_START   (UTF32)0xDC00
+#define UNI_SUR_LOW_END     (UTF32)0xDFFF
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Index into the table below with the first byte of a UTF-8 sequence to
+ * get the number of trailing bytes that are supposed to follow it.
+ * Note that *legal* UTF-8 values can't have 4 or 5-bytes. The table is
+ * left as-is for anyone who may want to do such conversion, which was
+ * allowed in earlier algorithms.
+ */
+static const char trailingBytesForUTF8[256] = {
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
+};
+
+/*
+ * Magic values subtracted from a buffer value during UTF8 conversion.
+ * This table contains as many values as there might be trailing bytes
+ * in a UTF-8 sequence.
+ */
+static const UTF32 offsetsFromUTF8[6] = { 0x00000000UL, 0x00003080UL, 0x000E2080UL, 
+                     0x03C82080UL, 0xFA082080UL, 0x82082080UL };
+
+/*
+ * Once the bits are split out into bytes of UTF-8, this is a mask OR-ed
+ * into the first byte, depending on how many bytes follow.  There are
+ * as many entries in this table as there are UTF-8 sequence types.
+ * (I.e., one byte sequence, two byte... etc.). Remember that sequencs
+ * for *legal* UTF-8 will be 4 or fewer bytes total.
+ */
+static const UTF8 firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
+
+/* --------------------------------------------------------------------- */
+
+/* The interface converts a whole buffer to avoid function-call overhead.
+ * Constants have been gathered. Loops & conditionals have been removed as
+ * much as possible for efficiency, in favor of drop-through switches.
+ * (See "Note A" at the bottom of the file for equivalent code.)
+ * If your compiler supports it, the "isLegalUTF8" call can be turned
+ * into an inline function.
+ */
+
+extern "C" {
+/* --------------------------------------------------------------------- */
+
+ConversionResult ConvertUTF32toUTF16 (
+        const UTF32** sourceStart, const UTF32* sourceEnd, 
+        UTF16** targetStart, UTF16* targetEnd, ConversionFlags flags) {
+    ConversionResult result = conversionOK;
+    const UTF32* source = *sourceStart;
+    UTF16* target = *targetStart;
+    while (source < sourceEnd) {
+        UTF32 ch;
+        if (target >= targetEnd) {
+            result = targetExhausted; break;
+        }
+        ch = *source++;
+        if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
+            /* UTF-16 surrogate values are illegal in UTF-32; 0xffff or 0xfffe are both reserved values */
+            if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
+                if (flags == strictConversion) {
+                    --source; /* return to the illegal value itself */
+                    result = sourceIllegal;
+                    break;
+                } else {
+                    *target++ = UNI_REPLACEMENT_CHAR;
+                }
+            } else {
+                *target++ = (UTF16)ch; /* normal case */
+            }
+        } else if (ch > UNI_MAX_LEGAL_UTF32) {
+            if (flags == strictConversion) {
+                result = sourceIllegal;
+            } else {
+                *target++ = UNI_REPLACEMENT_CHAR;
+            }
+        } else {
+            /* target is a character in range 0xFFFF - 0x10FFFF. */
+            if (target + 1 >= targetEnd) {
+                --source; /* Back up source pointer! */
+                result = targetExhausted; break;
+            }
+            ch -= halfBase;
+            *target++ = (UTF16)((ch >> halfShift) + UNI_SUR_HIGH_START);
+            *target++ = (UTF16)((ch & halfMask) + UNI_SUR_LOW_START);
+        }
+    }
+    *sourceStart = source;
+    *targetStart = target;
+    return result;
+}
+
+/* --------------------------------------------------------------------- */
+
+ConversionResult ConvertUTF16toUTF32 (
+        const UTF16** sourceStart, const UTF16* sourceEnd, 
+        UTF32** targetStart, UTF32* targetEnd, ConversionFlags flags) {
+    ConversionResult result = conversionOK;
+    const UTF16* source = *sourceStart;
+    UTF32* target = *targetStart;
+    UTF32 ch, ch2;
+    while (source < sourceEnd) {
+        const UTF16* oldSource = source; /*  In case we have to back up because of target overflow. */
+        ch = *source++;
+        /* If we have a surrogate pair, convert to UTF32 first. */
+        if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {
+            /* If the 16 bits following the high surrogate are in the source buffer... */
+            if (source < sourceEnd) {
+                ch2 = *source;
+                /* If it's a low surrogate, convert to UTF32. */
+                if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END) {
+                    ch = ((ch - UNI_SUR_HIGH_START) << halfShift)
+                        + (ch2 - UNI_SUR_LOW_START) + halfBase;
+                    ++source;
+                } else if (flags == strictConversion) { /* it's an unpaired high surrogate */
+                    --source; /* return to the illegal value itself */
+                    result = sourceIllegal;
+                    break;
+                }
+            } else { /* We don't have the 16 bits following the high surrogate. */
+                --source; /* return to the high surrogate */
+                result = sourceExhausted;
+                break;
+            }
+        } else if (flags == strictConversion) {
+            /* UTF-16 surrogate values are illegal in UTF-32 */
+            if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {
+                --source; /* return to the illegal value itself */
+                result = sourceIllegal;
+                break;
+            }
+        }
+        if (target >= targetEnd) {
+            source = oldSource; /* Back up source pointer! */
+            result = targetExhausted; break;
+        }
+        *target++ = ch;
+    }
+    *sourceStart = source;
+    *targetStart = target;
+#ifdef CVTUTF_DEBUG
+if (result == sourceIllegal) {
+    fprintf(stderr, "ConvertUTF16toUTF32 illegal seq 0x%04x,%04x\n", ch, ch2);
+    fflush(stderr);
+}
+#endif
+    return result;
+}
+ConversionResult ConvertUTF16toUTF8 (
+        const UTF16** sourceStart, const UTF16* sourceEnd, 
+        UTF8** targetStart, UTF8* targetEnd, ConversionFlags flags) {
+    ConversionResult result = conversionOK;
+    const UTF16* source = *sourceStart;
+    UTF8* target = *targetStart;
+    while (source < sourceEnd) {
+        UTF32 ch;
+        unsigned short bytesToWrite = 0;
+        const UTF32 byteMask = 0xBF;
+        const UTF32 byteMark = 0x80; 
+        const UTF16* oldSource = source; /* In case we have to back up because of target overflow. */
+        ch = *source++;
+        /* If we have a surrogate pair, convert to UTF32 first. */
+        if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_HIGH_END) {
+            /* If the 16 bits following the high surrogate are in the source buffer... */
+            if (source < sourceEnd) {
+                UTF32 ch2 = *source;
+                /* If it's a low surrogate, convert to UTF32. */
+                if (ch2 >= UNI_SUR_LOW_START && ch2 <= UNI_SUR_LOW_END) {
+                    ch = ((ch - UNI_SUR_HIGH_START) << halfShift)
+                        + (ch2 - UNI_SUR_LOW_START) + halfBase;
+                    ++source;
+                } else if (flags == strictConversion) { /* it's an unpaired high surrogate */
+                    --source; /* return to the illegal value itself */
+                    result = sourceIllegal;
+                    break;
+                }
+            } else { /* We don't have the 16 bits following the high surrogate. */
+                --source; /* return to the high surrogate */
+                result = sourceExhausted;
+                break;
+            }
+        } else if (flags == strictConversion) {
+            /* UTF-16 surrogate values are illegal in UTF-32 */
+            if (ch >= UNI_SUR_LOW_START && ch <= UNI_SUR_LOW_END) {
+                --source; /* return to the illegal value itself */
+                result = sourceIllegal;
+                break;
+            }
+        }
+        /* Figure out how many bytes the result will require */
+        if (ch < (UTF32)0x80) {      bytesToWrite = 1;
+        } else if (ch < (UTF32)0x800) {     bytesToWrite = 2;
+        } else if (ch < (UTF32)0x10000) {   bytesToWrite = 3;
+        } else if (ch < (UTF32)0x110000) {  bytesToWrite = 4;
+        } else {                            bytesToWrite = 3;
+                                            ch = UNI_REPLACEMENT_CHAR;
+        }
+
+        target += bytesToWrite;
+        if (target > targetEnd) {
+            source = oldSource; /* Back up source pointer! */
+            target -= bytesToWrite; result = targetExhausted; break;
+        }
+        switch (bytesToWrite) { /* note: everything falls through. */
+            case 4: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
+            case 3: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
+            case 2: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
+            case 1: *--target =  (UTF8)(ch | firstByteMark[bytesToWrite]);
+        }
+        target += bytesToWrite;
+    }
+    *sourceStart = source;
+    *targetStart = target;
+    return result;
+}
+
+/* --------------------------------------------------------------------- */
+
+ConversionResult ConvertUTF32toUTF8 (
+        const UTF32** sourceStart, const UTF32* sourceEnd, 
+        UTF8** targetStart, UTF8* targetEnd, ConversionFlags flags) {
+    ConversionResult result = conversionOK;
+    const UTF32* source = *sourceStart;
+    UTF8* target = *targetStart;
+    while (source < sourceEnd) {
+        UTF32 ch;
+        unsigned short bytesToWrite = 0;
+        const UTF32 byteMask = 0xBF;
+        const UTF32 byteMark = 0x80; 
+        ch = *source++;
+        if (flags == strictConversion ) {
+            /* UTF-16 surrogate values are illegal in UTF-32 */
+            if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
+                --source; /* return to the illegal value itself */
+                result = sourceIllegal;
+                break;
+            }
+        }
+        /*
+         * Figure out how many bytes the result will require. Turn any
+         * illegally large UTF32 things (> Plane 17) into replacement chars.
+         */
+        if (ch < (UTF32)0x80) {      bytesToWrite = 1;
+        } else if (ch < (UTF32)0x800) {     bytesToWrite = 2;
+        } else if (ch < (UTF32)0x10000) {   bytesToWrite = 3;
+        } else if (ch <= UNI_MAX_LEGAL_UTF32) {  bytesToWrite = 4;
+        } else {                            bytesToWrite = 3;
+                                            ch = UNI_REPLACEMENT_CHAR;
+                                            result = sourceIllegal;
+        }
+        
+        target += bytesToWrite;
+        if (target > targetEnd) {
+            --source; /* Back up source pointer! */
+            target -= bytesToWrite; result = targetExhausted; break;
+        }
+        switch (bytesToWrite) { /* note: everything falls through. */
+            case 4: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
+            case 3: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
+            case 2: *--target = (UTF8)((ch | byteMark) & byteMask); ch >>= 6;
+            case 1: *--target = (UTF8) (ch | firstByteMark[bytesToWrite]);
+        }
+        target += bytesToWrite;
+    }
+    *sourceStart = source;
+    *targetStart = target;
+    return result;
+}
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Utility routine to tell whether a sequence of bytes is legal UTF-8.
+ * This must be called with the length pre-determined by the first byte.
+ * If not calling this from ConvertUTF8to*, then the length can be set by:
+ *  length = trailingBytesForUTF8[*source]+1;
+ * and the sequence is illegal right away if there aren't that many bytes
+ * available.
+ * If presented with a length > 4, this returns false.  The Unicode
+ * definition of UTF-8 goes up to 4-byte sequences.
+ */
+
+static Boolean isLegalUTF8(const UTF8 *source, int length) {
+    UTF8 a;
+    const UTF8 *srcptr = source+length;
+    switch (length) {
+    default: return false;
+        /* Everything else falls through when "true"... */
+    case 4: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
+    case 3: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
+    case 2: if ((a = (*--srcptr)) < 0x80 || a > 0xBF) return false;
+
+        switch (*source) {
+            /* no fall-through in this inner switch */
+            case 0xE0: if (a < 0xA0) return false; break;
+            case 0xED: if (a > 0x9F) return false; break;
+            case 0xF0: if (a < 0x90) return false; break;
+            case 0xF4: if (a > 0x8F) return false; break;
+            default:   if (a < 0x80) return false;
+        }
+
+    case 1: if (*source >= 0x80 && *source < 0xC2) return false;
+    }
+    if (*source > 0xF4) return false;
+    return true;
+}
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Exported function to return whether a UTF-8 sequence is legal or not.
+ * This is not used here; it's just exported.
+ */
+Boolean isLegalUTF8Sequence(const UTF8 *source, const UTF8 *sourceEnd) {
+    int length = trailingBytesForUTF8[*source]+1;
+    if (length > sourceEnd - source) {
+        return false;
+    }
+    return isLegalUTF8(source, length);
+}
+
+/* --------------------------------------------------------------------- */
+
+static unsigned
+findMaximalSubpartOfIllFormedUTF8Sequence(const UTF8 *source,
+                                          const UTF8 *sourceEnd) {
+  UTF8 b1, b2, b3;
+
+  assert(!isLegalUTF8Sequence(source, sourceEnd));
+
+  /*
+   * Unicode 6.3.0, D93b:
+   *
+   *   Maximal subpart of an ill-formed subsequence: The longest code unit
+   *   subsequence starting at an unconvertible offset that is either:
+   *   a. the initial subsequence of a well-formed code unit sequence, or
+   *   b. a subsequence of length one.
+   */
+
+  if (source == sourceEnd)
+    return 0;
+
+  /*
+   * Perform case analysis.  See Unicode 6.3.0, Table 3-7. Well-Formed UTF-8
+   * Byte Sequences.
+   */
+
+  b1 = *source;
+  ++source;
+  if (b1 >= 0xC2 && b1 <= 0xDF) {
+    /*
+     * First byte is valid, but we know that this code unit sequence is
+     * invalid, so the maximal subpart has to end after the first byte.
+     */
+    return 1;
+  }
+
+  if (source == sourceEnd)
+    return 1;
+
+  b2 = *source;
+  ++source;
+
+  if (b1 == 0xE0) {
+    return (b2 >= 0xA0 && b2 <= 0xBF) ? 2 : 1;
+  }
+  if (b1 >= 0xE1 && b1 <= 0xEC) {
+    return (b2 >= 0x80 && b2 <= 0xBF) ? 2 : 1;
+  }
+  if (b1 == 0xED) {
+    return (b2 >= 0x80 && b2 <= 0x9F) ? 2 : 1;
+  }
+  if (b1 >= 0xEE && b1 <= 0xEF) {
+    return (b2 >= 0x80 && b2 <= 0xBF) ? 2 : 1;
+  }
+  if (b1 == 0xF0) {
+    if (b2 >= 0x90 && b2 <= 0xBF) {
+      if (source == sourceEnd)
+        return 2;
+
+      b3 = *source;
+      return (b3 >= 0x80 && b3 <= 0xBF) ? 3 : 2;
+    }
+    return 1;
+  }
+  if (b1 >= 0xF1 && b1 <= 0xF3) {
+    if (b2 >= 0x80 && b2 <= 0xBF) {
+      if (source == sourceEnd)
+        return 2;
+
+      b3 = *source;
+      return (b3 >= 0x80 && b3 <= 0xBF) ? 3 : 2;
+    }
+    return 1;
+  }
+  if (b1 == 0xF4) {
+    if (b2 >= 0x80 && b2 <= 0x8F) {
+      if (source == sourceEnd)
+        return 2;
+
+      b3 = *source;
+      return (b3 >= 0x80 && b3 <= 0xBF) ? 3 : 2;
+    }
+    return 1;
+  }
+
+  assert((b1 >= 0x80 && b1 <= 0xC1) || b1 >= 0xF5);
+  /*
+   * There are no valid sequences that start with these bytes.  Maximal subpart
+   * is defined to have length 1 in these cases.
+   */
+  return 1;
+}
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Exported function to return the total number of bytes in a codepoint
+ * represented in UTF-8, given the value of the first byte.
+ */
+unsigned getNumBytesForUTF8(UTF8 first) {
+  return trailingBytesForUTF8[first] + 1;
+}
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Exported function to return whether a UTF-8 string is legal or not.
+ * This is not used here; it's just exported.
+ */
+Boolean isLegalUTF8String(const UTF8 **source, const UTF8 *sourceEnd) {
+    while (*source != sourceEnd) {
+        int length = trailingBytesForUTF8[**source] + 1;
+        if (length > sourceEnd - *source || !isLegalUTF8(*source, length))
+            return false;
+        *source += length;
+    }
+    return true;
+}
+
+/* --------------------------------------------------------------------- */
+
+ConversionResult ConvertUTF8toUTF16 (
+        const UTF8** sourceStart, const UTF8* sourceEnd, 
+        UTF16** targetStart, UTF16* targetEnd, ConversionFlags flags) {
+    ConversionResult result = conversionOK;
+    const UTF8* source = *sourceStart;
+    UTF16* target = *targetStart;
+    while (source < sourceEnd) {
+        UTF32 ch = 0;
+        unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
+        if (extraBytesToRead >= sourceEnd - source) {
+            result = sourceExhausted; break;
+        }
+        /* Do this check whether lenient or strict */
+        if (!isLegalUTF8(source, extraBytesToRead+1)) {
+            result = sourceIllegal;
+            break;
+        }
+        /*
+         * The cases all fall through. See "Note A" below.
+         */
+        switch (extraBytesToRead) {
+            case 5: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
+            case 4: ch += *source++; ch <<= 6; /* remember, illegal UTF-8 */
+            case 3: ch += *source++; ch <<= 6;
+            case 2: ch += *source++; ch <<= 6;
+            case 1: ch += *source++; ch <<= 6;
+            case 0: ch += *source++;
+        }
+        ch -= offsetsFromUTF8[extraBytesToRead];
+
+        if (target >= targetEnd) {
+            source -= (extraBytesToRead+1); /* Back up source pointer! */
+            result = targetExhausted; break;
+        }
+        if (ch <= UNI_MAX_BMP) { /* Target is a character <= 0xFFFF */
+            /* UTF-16 surrogate values are illegal in UTF-32 */
+            if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
+                if (flags == strictConversion) {
+                    source -= (extraBytesToRead+1); /* return to the illegal value itself */
+                    result = sourceIllegal;
+                    break;
+                } else {
+                    *target++ = UNI_REPLACEMENT_CHAR;
+                }
+            } else {
+                *target++ = (UTF16)ch; /* normal case */
+            }
+        } else if (ch > UNI_MAX_UTF16) {
+            if (flags == strictConversion) {
+                result = sourceIllegal;
+                source -= (extraBytesToRead+1); /* return to the start */
+                break; /* Bail out; shouldn't continue */
+            } else {
+                *target++ = UNI_REPLACEMENT_CHAR;
+            }
+        } else {
+            /* target is a character in range 0xFFFF - 0x10FFFF. */
+            if (target + 1 >= targetEnd) {
+                source -= (extraBytesToRead+1); /* Back up source pointer! */
+                result = targetExhausted; break;
+            }
+            ch -= halfBase;
+            *target++ = (UTF16)((ch >> halfShift) + UNI_SUR_HIGH_START);
+            *target++ = (UTF16)((ch & halfMask) + UNI_SUR_LOW_START);
+        }
+    }
+    *sourceStart = source;
+    *targetStart = target;
+    return result;
+}
+
+/* --------------------------------------------------------------------- */
+
+static ConversionResult ConvertUTF8toUTF32Impl(
+        const UTF8** sourceStart, const UTF8* sourceEnd, 
+        UTF32** targetStart, UTF32* targetEnd, ConversionFlags flags,
+        Boolean InputIsPartial) {
+    ConversionResult result = conversionOK;
+    const UTF8* source = *sourceStart;
+    UTF32* target = *targetStart;
+    while (source < sourceEnd) {
+        UTF32 ch = 0;
+        unsigned short extraBytesToRead = trailingBytesForUTF8[*source];
+        if (extraBytesToRead >= sourceEnd - source) {
+            if (flags == strictConversion || InputIsPartial) {
+                result = sourceExhausted;
+                break;
+            } else {
+                result = sourceIllegal;
+
+                /*
+                 * Replace the maximal subpart of ill-formed sequence with
+                 * replacement character.
+                 */
+                source += findMaximalSubpartOfIllFormedUTF8Sequence(source,
+                                                                    sourceEnd);
+                *target++ = UNI_REPLACEMENT_CHAR;
+                continue;
+            }
+        }
+        if (target >= targetEnd) {
+            result = targetExhausted; break;
+        }
+
+        /* Do this check whether lenient or strict */
+        if (!isLegalUTF8(source, extraBytesToRead+1)) {
+            result = sourceIllegal;
+            if (flags == strictConversion) {
+                /* Abort conversion. */
+                break;
+            } else {
+                /*
+                 * Replace the maximal subpart of ill-formed sequence with
+                 * replacement character.
+                 */
+                source += findMaximalSubpartOfIllFormedUTF8Sequence(source,
+                                                                    sourceEnd);
+                *target++ = UNI_REPLACEMENT_CHAR;
+                continue;
+            }
+        }
+        /*
+         * The cases all fall through. See "Note A" below.
+         */
+        switch (extraBytesToRead) {
+            case 5: ch += *source++; ch <<= 6;
+            case 4: ch += *source++; ch <<= 6;
+            case 3: ch += *source++; ch <<= 6;
+            case 2: ch += *source++; ch <<= 6;
+            case 1: ch += *source++; ch <<= 6;
+            case 0: ch += *source++;
+        }
+        ch -= offsetsFromUTF8[extraBytesToRead];
+
+        if (ch <= UNI_MAX_LEGAL_UTF32) {
+            /*
+             * UTF-16 surrogate values are illegal in UTF-32, and anything
+             * over Plane 17 (> 0x10FFFF) is illegal.
+             */
+            if (ch >= UNI_SUR_HIGH_START && ch <= UNI_SUR_LOW_END) {
+                if (flags == strictConversion) {
+                    source -= (extraBytesToRead+1); /* return to the illegal value itself */
+                    result = sourceIllegal;
+                    break;
+                } else {
+                    *target++ = UNI_REPLACEMENT_CHAR;
+                }
+            } else {
+                *target++ = ch;
+            }
+        } else { /* i.e., ch > UNI_MAX_LEGAL_UTF32 */
+            result = sourceIllegal;
+            *target++ = UNI_REPLACEMENT_CHAR;
+        }
+    }
+    *sourceStart = source;
+    *targetStart = target;
+    return result;
+}
+
+ConversionResult ConvertUTF8toUTF32Partial(const UTF8 **sourceStart,
+                                           const UTF8 *sourceEnd,
+                                           UTF32 **targetStart,
+                                           UTF32 *targetEnd,
+                                           ConversionFlags flags) {
+  return ConvertUTF8toUTF32Impl(sourceStart, sourceEnd, targetStart, targetEnd,
+                                flags, /*InputIsPartial=*/true);
+}
+
+ConversionResult ConvertUTF8toUTF32(const UTF8 **sourceStart,
+                                    const UTF8 *sourceEnd, UTF32 **targetStart,
+                                    UTF32 *targetEnd, ConversionFlags flags) {
+  return ConvertUTF8toUTF32Impl(sourceStart, sourceEnd, targetStart, targetEnd,
+                                flags, /*InputIsPartial=*/false);
+}
+
+}
+
+/* ---------------------------------------------------------------------
+
+    Note A.
+    The fall-through switches in UTF-8 reading code save a
+    temp variable, some decrements & conditionals.  The switches
+    are equivalent to the following loop:
+        {
+            int tmpBytesToRead = extraBytesToRead+1;
+            do {
+                ch += *source++;
+                --tmpBytesToRead;
+                if (tmpBytesToRead) ch <<= 6;
+            } while (tmpBytesToRead > 0);
+        }
+    In UTF-8 writing code, the switches on "bytesToWrite" are
+    similarly unrolled loops.
+
+   --------------------------------------------------------------------- */

src/main/native/cpp/llvm/ConvertUTFWrapper.cpp

@@ -0,0 +1,122 @@
+//===-- ConvertUTFWrapper.cpp - Wrap ConvertUTF.h with clang data types -----===
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ConvertUTF.h"
+#include <string>
+#include <vector>
+
+namespace llvm {
+
+bool ConvertCodePointToUTF8(unsigned Source, char *&ResultPtr) {
+  const UTF32 *SourceStart = &Source;
+  const UTF32 *SourceEnd = SourceStart + 1;
+  UTF8 *TargetStart = reinterpret_cast<UTF8 *>(ResultPtr);
+  UTF8 *TargetEnd = TargetStart + 4;
+  ConversionResult CR = ConvertUTF32toUTF8(&SourceStart, SourceEnd,
+                                           &TargetStart, TargetEnd,
+                                           strictConversion);
+  if (CR != conversionOK)
+    return false;
+
+  ResultPtr = reinterpret_cast<char*>(TargetStart);
+  return true;
+}
+
+bool hasUTF16ByteOrderMark(ArrayRef<char> S) {
+  return (S.size() >= 2 &&
+          ((S[0] == '\xff' && S[1] == '\xfe') ||
+           (S[0] == '\xfe' && S[1] == '\xff')));
+}
+
+bool convertUTF16ToUTF8String(ArrayRef<UTF16> SrcUTF16,
+                              SmallVectorImpl<char> &DstUTF8) {
+  assert(DstUTF8.empty());
+
+  // Avoid OOB by returning early on empty input.
+  if (SrcUTF16.empty())
+    return true;
+
+  const UTF16 *Src = SrcUTF16.begin();
+  const UTF16 *SrcEnd = SrcUTF16.end();
+
+  // Byteswap if necessary.
+  std::vector<UTF16> ByteSwapped;
+  if (Src[0] == UNI_UTF16_BYTE_ORDER_MARK_SWAPPED) {
+    ByteSwapped.insert(ByteSwapped.end(), Src, SrcEnd);
+    for (unsigned I = 0, E = ByteSwapped.size(); I != E; ++I)
+      ByteSwapped[I] = (ByteSwapped[I] << 8) | (ByteSwapped[I] >> 8);
+    Src = &ByteSwapped[0];
+    SrcEnd = &ByteSwapped[ByteSwapped.size() - 1] + 1;
+  }
+
+  // Skip the BOM for conversion.
+  if (Src[0] == UNI_UTF16_BYTE_ORDER_MARK_NATIVE)
+    Src++;
+
+  // Just allocate enough space up front.  We'll shrink it later.  Allocate
+  // enough that we can fit a null terminator without reallocating.
+  DstUTF8.resize(SrcUTF16.size() * UNI_MAX_UTF8_BYTES_PER_CODE_POINT + 1);
+  UTF8 *Dst = reinterpret_cast<UTF8*>(&DstUTF8[0]);
+  UTF8 *DstEnd = Dst + DstUTF8.size();
+
+  ConversionResult CR =
+      ConvertUTF16toUTF8(&Src, SrcEnd, &Dst, DstEnd, strictConversion);
+  assert(CR != targetExhausted);
+
+  if (CR != conversionOK) {
+    DstUTF8.clear();
+    return false;
+  }
+
+  DstUTF8.resize(reinterpret_cast<char*>(Dst) - &DstUTF8[0]);
+  DstUTF8.push_back(0);
+  DstUTF8.pop_back();
+  return true;
+}
+
+bool convertUTF8ToUTF16String(StringRef SrcUTF8,
+                              SmallVectorImpl<UTF16> &DstUTF16) {
+  assert(DstUTF16.empty());
+
+  // Avoid OOB by returning early on empty input.
+  if (SrcUTF8.empty()) {
+    DstUTF16.push_back(0);
+    DstUTF16.pop_back();
+    return true;
+  }
+
+  const UTF8 *Src = reinterpret_cast<const UTF8 *>(SrcUTF8.begin());
+  const UTF8 *SrcEnd = reinterpret_cast<const UTF8 *>(SrcUTF8.end());
+
+  // Allocate the same number of UTF-16 code units as UTF-8 code units. Encoding
+  // as UTF-16 should always require the same amount or less code units than the
+  // UTF-8 encoding.  Allocate one extra byte for the null terminator though,
+  // so that someone calling DstUTF16.data() gets a null terminated string.
+  // We resize down later so we don't have to worry that this over allocates.
+  DstUTF16.resize(SrcUTF8.size()+1);
+  UTF16 *Dst = &DstUTF16[0];
+  UTF16 *DstEnd = Dst + DstUTF16.size();
+
+  ConversionResult CR =
+      ConvertUTF8toUTF16(&Src, SrcEnd, &Dst, DstEnd, strictConversion);
+  assert(CR != targetExhausted);
+
+  if (CR != conversionOK) {
+    DstUTF16.clear();
+    return false;
+  }
+
+  DstUTF16.resize(Dst - &DstUTF16[0]);
+  DstUTF16.push_back(0);
+  DstUTF16.pop_back();
+  return true;
+}
+
+} // end namespace llvm
+

src/main/native/cpp/llvm/ErrorHandling.cpp

@@ -0,0 +1,83 @@
+//===- lib/Support/ErrorHandling.cpp - Callbacks for errors ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines an API used to indicate fatal error conditions.  Non-fatal
+// errors (most of them) should be handled through LLVMContext.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/WindowsError.h"
+
+#ifdef _WIN32
+
+#include <system_error>
+#include <winerror.h>
+
+// I'd rather not double the line count of the following.
+#define MAP_ERR_TO_COND(x, y)                                                  \
+  case x:                                                                      \
+    return std::make_error_code(std::errc::y)
+
+std::error_code llvm::mapWindowsError(unsigned EV) {
+  switch (EV) {
+    MAP_ERR_TO_COND(ERROR_ACCESS_DENIED, permission_denied);
+    MAP_ERR_TO_COND(ERROR_ALREADY_EXISTS, file_exists);
+    MAP_ERR_TO_COND(ERROR_BAD_UNIT, no_such_device);
+    MAP_ERR_TO_COND(ERROR_BUFFER_OVERFLOW, filename_too_long);
+    MAP_ERR_TO_COND(ERROR_BUSY, device_or_resource_busy);
+    MAP_ERR_TO_COND(ERROR_BUSY_DRIVE, device_or_resource_busy);
+    MAP_ERR_TO_COND(ERROR_CANNOT_MAKE, permission_denied);
+    MAP_ERR_TO_COND(ERROR_CANTOPEN, io_error);
+    MAP_ERR_TO_COND(ERROR_CANTREAD, io_error);
+    MAP_ERR_TO_COND(ERROR_CANTWRITE, io_error);
+    MAP_ERR_TO_COND(ERROR_CURRENT_DIRECTORY, permission_denied);
+    MAP_ERR_TO_COND(ERROR_DEV_NOT_EXIST, no_such_device);
+    MAP_ERR_TO_COND(ERROR_DEVICE_IN_USE, device_or_resource_busy);
+    MAP_ERR_TO_COND(ERROR_DIR_NOT_EMPTY, directory_not_empty);
+    MAP_ERR_TO_COND(ERROR_DIRECTORY, invalid_argument);
+    MAP_ERR_TO_COND(ERROR_DISK_FULL, no_space_on_device);
+    MAP_ERR_TO_COND(ERROR_FILE_EXISTS, file_exists);
+    MAP_ERR_TO_COND(ERROR_FILE_NOT_FOUND, no_such_file_or_directory);
+    MAP_ERR_TO_COND(ERROR_HANDLE_DISK_FULL, no_space_on_device);
+    MAP_ERR_TO_COND(ERROR_INVALID_ACCESS, permission_denied);
+    MAP_ERR_TO_COND(ERROR_INVALID_DRIVE, no_such_device);
+    MAP_ERR_TO_COND(ERROR_INVALID_FUNCTION, function_not_supported);
+    MAP_ERR_TO_COND(ERROR_INVALID_HANDLE, invalid_argument);
+    MAP_ERR_TO_COND(ERROR_INVALID_NAME, invalid_argument);
+    MAP_ERR_TO_COND(ERROR_LOCK_VIOLATION, no_lock_available);
+    MAP_ERR_TO_COND(ERROR_LOCKED, no_lock_available);
+    MAP_ERR_TO_COND(ERROR_NEGATIVE_SEEK, invalid_argument);
+    MAP_ERR_TO_COND(ERROR_NOACCESS, permission_denied);
+    MAP_ERR_TO_COND(ERROR_NOT_ENOUGH_MEMORY, not_enough_memory);
+    MAP_ERR_TO_COND(ERROR_NOT_READY, resource_unavailable_try_again);
+    MAP_ERR_TO_COND(ERROR_OPEN_FAILED, io_error);
+    MAP_ERR_TO_COND(ERROR_OPEN_FILES, device_or_resource_busy);
+    MAP_ERR_TO_COND(ERROR_OUTOFMEMORY, not_enough_memory);
+    MAP_ERR_TO_COND(ERROR_PATH_NOT_FOUND, no_such_file_or_directory);
+    MAP_ERR_TO_COND(ERROR_BAD_NETPATH, no_such_file_or_directory);
+    MAP_ERR_TO_COND(ERROR_READ_FAULT, io_error);
+    MAP_ERR_TO_COND(ERROR_RETRY, resource_unavailable_try_again);
+    MAP_ERR_TO_COND(ERROR_SEEK, io_error);
+    MAP_ERR_TO_COND(ERROR_SHARING_VIOLATION, permission_denied);
+    MAP_ERR_TO_COND(ERROR_TOO_MANY_OPEN_FILES, too_many_files_open);
+    MAP_ERR_TO_COND(ERROR_WRITE_FAULT, io_error);
+    MAP_ERR_TO_COND(ERROR_WRITE_PROTECT, permission_denied);
+    MAP_ERR_TO_COND(WSAEACCES, permission_denied);
+    MAP_ERR_TO_COND(WSAEBADF, bad_file_descriptor);
+    MAP_ERR_TO_COND(WSAEFAULT, bad_address);
+    MAP_ERR_TO_COND(WSAEINTR, interrupted);
+    MAP_ERR_TO_COND(WSAEINVAL, invalid_argument);
+    MAP_ERR_TO_COND(WSAEMFILE, too_many_files_open);
+    MAP_ERR_TO_COND(WSAENAMETOOLONG, filename_too_long);
+  default:
+    return std::error_code(EV, std::system_category());
+  }
+}
+
+#endif

src/main/native/cpp/llvm/Hashing.cpp

@@ -0,0 +1,29 @@
+//===-------------- lib/Support/Hashing.cpp -------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides implementation bits for the LLVM common hashing
+// infrastructure. Documentation and most of the other information is in the
+// header file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Hashing.h"
+
+using namespace llvm;
+
+// Provide a definition and static initializer for the fixed seed. This
+// initializer should always be zero to ensure its value can never appear to be
+// non-zero, even during dynamic initialization.
+size_t llvm::hashing::detail::fixed_seed_override = 0;
+
+// Implement the function for forced setting of the fixed seed.
+// FIXME: Use atomic operations here so that there is no data race.
+void llvm::set_fixed_execution_hash_seed(size_t fixed_value) {
+  hashing::detail::fixed_seed_override = fixed_value;
+}

src/main/native/cpp/llvm/SmallPtrSet.cpp

@@ -0,0 +1,295 @@
+//===- llvm/ADT/SmallPtrSet.cpp - 'Normally small' pointer set ------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the SmallPtrSet class.  See SmallPtrSet.h for an
+// overview of the algorithm.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/SmallPtrSet.h"
+#include "llvm/DenseMapInfo.h"
+#include "llvm/MathExtras.h"
+#include <algorithm>
+#include <cstdlib>
+
+using namespace llvm;
+
+void SmallPtrSetImplBase::shrink_and_clear() {
+  assert(!isSmall() && "Can't shrink a small set!");
+  free(CurArray);
+
+  // Reduce the number of buckets.
+  unsigned Size = size();
+  CurArraySize = Size > 16 ? 1 << (Log2_32_Ceil(Size) + 1) : 32;
+  NumNonEmpty = NumTombstones = 0;
+
+  // Install the new array.  Clear all the buckets to empty.
+  CurArray = (const void**)malloc(sizeof(void*) * CurArraySize);
+  assert(CurArray && "Failed to allocate memory?");
+  memset(CurArray, -1, CurArraySize*sizeof(void*));
+}
+
+std::pair<const void *const *, bool>
+SmallPtrSetImplBase::insert_imp_big(const void *Ptr) {
+  if (LLVM_UNLIKELY(size() * 4 >= CurArraySize * 3)) {
+    // If more than 3/4 of the array is full, grow.
+    Grow(CurArraySize < 64 ? 128 : CurArraySize * 2);
+  } else if (LLVM_UNLIKELY(CurArraySize - NumNonEmpty < CurArraySize / 8)) {
+    // If fewer of 1/8 of the array is empty (meaning that many are filled with
+    // tombstones), rehash.
+    Grow(CurArraySize);
+  }
+
+  // Okay, we know we have space.  Find a hash bucket.
+  const void **Bucket = const_cast<const void**>(FindBucketFor(Ptr));
+  if (*Bucket == Ptr)
+    return std::make_pair(Bucket, false); // Already inserted, good.
+
+  // Otherwise, insert it!
+  if (*Bucket == getTombstoneMarker())
+    --NumTombstones;
+  else
+    ++NumNonEmpty; // Track density.
+  *Bucket = Ptr;
+  return std::make_pair(Bucket, true);
+}
+
+bool SmallPtrSetImplBase::erase_imp(const void * Ptr) {
+  if (isSmall()) {
+    // Check to see if it is in the set.
+    for (const void **APtr = CurArray, **E = CurArray + NumNonEmpty; APtr != E;
+         ++APtr)
+      if (*APtr == Ptr) {
+        // If it is in the set, replace this element.
+        *APtr = getTombstoneMarker();
+        ++NumTombstones;
+        return true;
+      }
+
+    return false;
+  }
+
+  // Okay, we know we have space.  Find a hash bucket.
+  void **Bucket = const_cast<void**>(FindBucketFor(Ptr));
+  if (*Bucket != Ptr) return false;  // Not in the set?
+
+  // Set this as a tombstone.
+  *Bucket = getTombstoneMarker();
+  ++NumTombstones;
+  return true;
+}
+
+const void * const *SmallPtrSetImplBase::FindBucketFor(const void *Ptr) const {
+  unsigned Bucket = DenseMapInfo<void *>::getHashValue(Ptr) & (CurArraySize-1);
+  unsigned ArraySize = CurArraySize;
+  unsigned ProbeAmt = 1;
+  const void *const *Array = CurArray;
+  const void *const *Tombstone = nullptr;
+  while (1) {
+    // If we found an empty bucket, the pointer doesn't exist in the set.
+    // Return a tombstone if we've seen one so far, or the empty bucket if
+    // not.
+    if (LLVM_LIKELY(Array[Bucket] == getEmptyMarker()))
+      return Tombstone ? Tombstone : Array+Bucket;
+
+    // Found Ptr's bucket?
+    if (LLVM_LIKELY(Array[Bucket] == Ptr))
+      return Array+Bucket;
+
+    // If this is a tombstone, remember it.  If Ptr ends up not in the set, we
+    // prefer to return it than something that would require more probing.
+    if (Array[Bucket] == getTombstoneMarker() && !Tombstone)
+      Tombstone = Array+Bucket;  // Remember the first tombstone found.
+
+    // It's a hash collision or a tombstone. Reprobe.
+    Bucket = (Bucket + ProbeAmt++) & (ArraySize-1);
+  }
+}
+
+/// Grow - Allocate a larger backing store for the buckets and move it over.
+///
+void SmallPtrSetImplBase::Grow(unsigned NewSize) {
+  const void **OldBuckets = CurArray;
+  const void **OldEnd = EndPointer();
+  bool WasSmall = isSmall();
+
+  // Install the new array.  Clear all the buckets to empty.
+  CurArray = (const void**)malloc(sizeof(void*) * NewSize);
+  assert(CurArray && "Failed to allocate memory?");
+  CurArraySize = NewSize;
+  memset(CurArray, -1, NewSize*sizeof(void*));
+
+  // Copy over all valid entries.
+  for (const void **BucketPtr = OldBuckets; BucketPtr != OldEnd; ++BucketPtr) {
+    // Copy over the element if it is valid.
+    const void *Elt = *BucketPtr;
+    if (Elt != getTombstoneMarker() && Elt != getEmptyMarker())
+      *const_cast<void**>(FindBucketFor(Elt)) = const_cast<void*>(Elt);
+  }
+
+  if (!WasSmall)
+    free(OldBuckets);
+  NumNonEmpty -= NumTombstones;
+  NumTombstones = 0;
+}
+
+SmallPtrSetImplBase::SmallPtrSetImplBase(const void **SmallStorage,
+                                         const SmallPtrSetImplBase &that) {
+  SmallArray = SmallStorage;
+
+  // If we're becoming small, prepare to insert into our stack space
+  if (that.isSmall()) {
+    CurArray = SmallArray;
+  // Otherwise, allocate new heap space (unless we were the same size)
+  } else {
+    CurArray = (const void**)malloc(sizeof(void*) * that.CurArraySize);
+    assert(CurArray && "Failed to allocate memory?");
+  }
+
+  // Copy over the that array.
+  CopyHelper(that);
+}
+
+SmallPtrSetImplBase::SmallPtrSetImplBase(const void **SmallStorage,
+                                         unsigned SmallSize,
+                                         SmallPtrSetImplBase &&that) {
+  SmallArray = SmallStorage;
+  MoveHelper(SmallSize, std::move(that));
+}
+
+void SmallPtrSetImplBase::CopyFrom(const SmallPtrSetImplBase &RHS) {
+  assert(&RHS != this && "Self-copy should be handled by the caller.");
+
+  if (isSmall() && RHS.isSmall())
+    assert(CurArraySize == RHS.CurArraySize &&
+           "Cannot assign sets with different small sizes");
+
+  // If we're becoming small, prepare to insert into our stack space
+  if (RHS.isSmall()) {
+    if (!isSmall())
+      free(CurArray);
+    CurArray = SmallArray;
+  // Otherwise, allocate new heap space (unless we were the same size)
+  } else if (CurArraySize != RHS.CurArraySize) {
+    if (isSmall())
+      CurArray = (const void**)malloc(sizeof(void*) * RHS.CurArraySize);
+    else {
+      const void **T = (const void**)realloc(CurArray,
+                                             sizeof(void*) * RHS.CurArraySize);
+      if (!T)
+        free(CurArray);
+      CurArray = T;
+    }
+    assert(CurArray && "Failed to allocate memory?");
+  }
+
+  CopyHelper(RHS);
+}
+
+void SmallPtrSetImplBase::CopyHelper(const SmallPtrSetImplBase &RHS) {
+  // Copy over the new array size
+  CurArraySize = RHS.CurArraySize;
+
+  // Copy over the contents from the other set
+  std::copy(RHS.CurArray, RHS.EndPointer(), CurArray);
+
+  NumNonEmpty = RHS.NumNonEmpty;
+  NumTombstones = RHS.NumTombstones;
+}
+
+void SmallPtrSetImplBase::MoveFrom(unsigned SmallSize,
+                                   SmallPtrSetImplBase &&RHS) {
+  if (!isSmall())
+    free(CurArray);
+  MoveHelper(SmallSize, std::move(RHS));
+}
+
+void SmallPtrSetImplBase::MoveHelper(unsigned SmallSize,
+                                     SmallPtrSetImplBase &&RHS) {
+  assert(&RHS != this && "Self-move should be handled by the caller.");
+
+  if (RHS.isSmall()) {
+    // Copy a small RHS rather than moving.
+    CurArray = SmallArray;
+    std::copy(RHS.CurArray, RHS.CurArray + RHS.NumNonEmpty, CurArray);
+  } else {
+    CurArray = RHS.CurArray;
+    RHS.CurArray = RHS.SmallArray;
+  }
+
+  // Copy the rest of the trivial members.
+  CurArraySize = RHS.CurArraySize;
+  NumNonEmpty = RHS.NumNonEmpty;
+  NumTombstones = RHS.NumTombstones;
+
+  // Make the RHS small and empty.
+  RHS.CurArraySize = SmallSize;
+  assert(RHS.CurArray == RHS.SmallArray);
+  RHS.NumNonEmpty = 0;
+  RHS.NumTombstones = 0;
+}
+
+void SmallPtrSetImplBase::swap(SmallPtrSetImplBase &RHS) {
+  if (this == &RHS) return;
+
+  // We can only avoid copying elements if neither set is small.
+  if (!this->isSmall() && !RHS.isSmall()) {
+    std::swap(this->CurArray, RHS.CurArray);
+    std::swap(this->CurArraySize, RHS.CurArraySize);
+    std::swap(this->NumNonEmpty, RHS.NumNonEmpty);
+    std::swap(this->NumTombstones, RHS.NumTombstones);
+    return;
+  }
+
+  // FIXME: From here on we assume that both sets have the same small size.
+
+  // If only RHS is small, copy the small elements into LHS and move the pointer
+  // from LHS to RHS.
+  if (!this->isSmall() && RHS.isSmall()) {
+    assert(RHS.CurArray == RHS.SmallArray);
+    std::copy(RHS.CurArray, RHS.CurArray + RHS.NumNonEmpty, this->SmallArray);
+    std::swap(RHS.CurArraySize, this->CurArraySize);
+    std::swap(this->NumNonEmpty, RHS.NumNonEmpty);
+    std::swap(this->NumTombstones, RHS.NumTombstones);
+    RHS.CurArray = this->CurArray;
+    this->CurArray = this->SmallArray;
+    return;
+  }
+
+  // If only LHS is small, copy the small elements into RHS and move the pointer
+  // from RHS to LHS.
+  if (this->isSmall() && !RHS.isSmall()) {
+    assert(this->CurArray == this->SmallArray);
+    std::copy(this->CurArray, this->CurArray + this->NumNonEmpty,
+              RHS.SmallArray);
+    std::swap(RHS.CurArraySize, this->CurArraySize);
+    std::swap(RHS.NumNonEmpty, this->NumNonEmpty);
+    std::swap(RHS.NumTombstones, this->NumTombstones);
+    this->CurArray = RHS.CurArray;
+    RHS.CurArray = RHS.SmallArray;
+    return;
+  }
+
+  // Both a small, just swap the small elements.
+  assert(this->isSmall() && RHS.isSmall());
+  unsigned MinNonEmpty = std::min(this->NumNonEmpty, RHS.NumNonEmpty);
+  std::swap_ranges(this->SmallArray, this->SmallArray + MinNonEmpty,
+                   RHS.SmallArray);
+  if (this->NumNonEmpty > MinNonEmpty) {
+    std::copy(this->SmallArray + MinNonEmpty,
+              this->SmallArray + this->NumNonEmpty,
+              RHS.SmallArray + MinNonEmpty);
+  } else {
+    std::copy(RHS.SmallArray + MinNonEmpty, RHS.SmallArray + RHS.NumNonEmpty,
+              this->SmallArray + MinNonEmpty);
+  }
+  assert(this->CurArraySize == RHS.CurArraySize);
+  std::swap(this->NumNonEmpty, RHS.NumNonEmpty);
+  std::swap(this->NumTombstones, RHS.NumTombstones);
+}

src/main/native/cpp/llvm/SmallVector.cpp

@@ -0,0 +1,41 @@
+//===- llvm/ADT/SmallVector.cpp - 'Normally small' vectors ----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the SmallVector class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/SmallVector.h"
+using namespace llvm;
+
+/// grow_pod - This is an implementation of the grow() method which only works
+/// on POD-like datatypes and is out of line to reduce code duplication.
+void SmallVectorBase::grow_pod(void *FirstEl, size_t MinSizeInBytes,
+                               size_t TSize) {
+  size_t CurSizeBytes = size_in_bytes();
+  size_t NewCapacityInBytes = 2 * capacity_in_bytes() + TSize; // Always grow.
+  if (NewCapacityInBytes < MinSizeInBytes)
+    NewCapacityInBytes = MinSizeInBytes;
+
+  void *NewElts;
+  if (BeginX == FirstEl) {
+    NewElts = malloc(NewCapacityInBytes);
+
+    // Copy the elements over.  No need to run dtors on PODs.
+    memcpy(NewElts, this->BeginX, CurSizeBytes);
+  } else {
+    // If this wasn't grown from the inline copy, grow the allocated space.
+    NewElts = realloc(this->BeginX, NewCapacityInBytes);
+  }
+  assert(NewElts && "Out of memory");
+
+  this->EndX = (char*)NewElts+CurSizeBytes;
+  this->BeginX = NewElts;
+  this->CapacityX = (char*)this->BeginX + NewCapacityInBytes;
+}

src/main/native/cpp/llvm/StringExtras.cpp

@@ -0,0 +1,58 @@
+//===-- StringExtras.cpp - Implement the StringExtras header --------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the StringExtras.h header
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/StringExtras.h"
+#include "llvm/SmallVector.h"
+using namespace llvm;
+
+/// StrInStrNoCase - Portable version of strcasestr.  Locates the first
+/// occurrence of string 's1' in string 's2', ignoring case.  Returns
+/// the offset of s2 in s1 or npos if s2 cannot be found.
+StringRef::size_type llvm::StrInStrNoCase(StringRef s1, StringRef s2) {
+  size_t N = s2.size(), M = s1.size();
+  if (N > M)
+    return StringRef::npos;
+  for (size_t i = 0, e = M - N + 1; i != e; ++i)
+    if (s1.substr(i, N).equals_lower(s2))
+      return i;
+  return StringRef::npos;
+}
+
+/// getToken - This function extracts one token from source, ignoring any
+/// leading characters that appear in the Delimiters string, and ending the
+/// token at any of the characters that appear in the Delimiters string.  If
+/// there are no tokens in the source string, an empty string is returned.
+/// The function returns a pair containing the extracted token and the
+/// remaining tail string.
+std::pair<StringRef, StringRef> llvm::getToken(StringRef Source,
+                                               StringRef Delimiters) {
+  // Figure out where the token starts.
+  StringRef::size_type Start = Source.find_first_not_of(Delimiters);
+
+  // Find the next occurrence of the delimiter.
+  StringRef::size_type End = Source.find_first_of(Delimiters, Start);
+
+  return std::make_pair(Source.slice(Start, End), Source.substr(End));
+}
+
+/// SplitString - Split up the specified string according to the specified
+/// delimiters, appending the result fragments to the output list.
+void llvm::SplitString(StringRef Source,
+                       SmallVectorImpl<StringRef> &OutFragments,
+                       StringRef Delimiters) {
+  std::pair<StringRef, StringRef> S = getToken(Source, Delimiters);
+  while (!S.first.empty()) {
+    OutFragments.push_back(S.first);
+    S = getToken(S.second, Delimiters);
+  }
+}

src/main/native/cpp/llvm/StringMap.cpp

@@ -0,0 +1,260 @@
+//===--- StringMap.cpp - String Hash table map implementation -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the StringMap class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/StringMap.h"
+#include "llvm/MathExtras.h"
+#include "llvm/StringExtras.h"
+#include "llvm/Compiler.h"
+#include <cassert>
+using namespace llvm;
+
+/// Returns the number of buckets to allocate to ensure that the DenseMap can
+/// accommodate \p NumEntries without need to grow().
+static unsigned getMinBucketToReserveForEntries(unsigned NumEntries) {
+  // Ensure that "NumEntries * 4 < NumBuckets * 3"
+  if (NumEntries == 0)
+    return 0;
+  // +1 is required because of the strict equality.
+  // For example if NumEntries is 48, we need to return 401.
+  return NextPowerOf2(NumEntries * 4 / 3 + 1);
+}
+
+StringMapImpl::StringMapImpl(unsigned InitSize, unsigned itemSize) {
+  ItemSize = itemSize;
+
+  // If a size is specified, initialize the table with that many buckets.
+  if (InitSize) {
+    // The table will grow when the number of entries reach 3/4 of the number of
+    // buckets. To guarantee that "InitSize" number of entries can be inserted
+    // in the table without growing, we allocate just what is needed here.
+    init(getMinBucketToReserveForEntries(InitSize));
+    return;
+  }
+
+  // Otherwise, initialize it with zero buckets to avoid the allocation.
+  TheTable = nullptr;
+  NumBuckets = 0;
+  NumItems = 0;
+  NumTombstones = 0;
+}
+
+void StringMapImpl::init(unsigned InitSize) {
+  assert((InitSize & (InitSize-1)) == 0 &&
+         "Init Size must be a power of 2 or zero!");
+  NumBuckets = InitSize ? InitSize : 16;
+  NumItems = 0;
+  NumTombstones = 0;
+
+  TheTable = (StringMapEntryBase **)calloc(NumBuckets+1,
+                                           sizeof(StringMapEntryBase **) +
+                                           sizeof(unsigned));
+
+  // Allocate one extra bucket, set it to look filled so the iterators stop at
+  // end.
+  TheTable[NumBuckets] = (StringMapEntryBase*)2;
+}
+
+
+/// LookupBucketFor - Look up the bucket that the specified string should end
+/// up in.  If it already exists as a key in the map, the Item pointer for the
+/// specified bucket will be non-null.  Otherwise, it will be null.  In either
+/// case, the FullHashValue field of the bucket will be set to the hash value
+/// of the string.
+unsigned StringMapImpl::LookupBucketFor(StringRef Name) {
+  unsigned HTSize = NumBuckets;
+  if (HTSize == 0) {  // Hash table unallocated so far?
+    init(16);
+    HTSize = NumBuckets;
+  }
+  unsigned FullHashValue = HashString(Name);
+  unsigned BucketNo = FullHashValue & (HTSize-1);
+  unsigned *HashTable = (unsigned *)(TheTable + NumBuckets + 1);
+
+  unsigned ProbeAmt = 1;
+  int FirstTombstone = -1;
+  while (1) {
+    StringMapEntryBase *BucketItem = TheTable[BucketNo];
+    // If we found an empty bucket, this key isn't in the table yet, return it.
+    if (LLVM_LIKELY(!BucketItem)) {
+      // If we found a tombstone, we want to reuse the tombstone instead of an
+      // empty bucket.  This reduces probing.
+      if (FirstTombstone != -1) {
+        HashTable[FirstTombstone] = FullHashValue;
+        return FirstTombstone;
+      }
+
+      HashTable[BucketNo] = FullHashValue;
+      return BucketNo;
+    }
+
+    if (BucketItem == getTombstoneVal()) {
+      // Skip over tombstones.  However, remember the first one we see.
+      if (FirstTombstone == -1) FirstTombstone = BucketNo;
+    } else if (LLVM_LIKELY(HashTable[BucketNo] == FullHashValue)) {
+      // If the full hash value matches, check deeply for a match.  The common
+      // case here is that we are only looking at the buckets (for item info
+      // being non-null and for the full hash value) not at the items.  This
+      // is important for cache locality.
+
+      // Do the comparison like this because Name isn't necessarily
+      // null-terminated!
+      char *ItemStr = (char*)BucketItem+ItemSize;
+      if (Name == StringRef(ItemStr, BucketItem->getKeyLength())) {
+        // We found a match!
+        return BucketNo;
+      }
+    }
+
+    // Okay, we didn't find the item.  Probe to the next bucket.
+    BucketNo = (BucketNo+ProbeAmt) & (HTSize-1);
+
+    // Use quadratic probing, it has fewer clumping artifacts than linear
+    // probing and has good cache behavior in the common case.
+    ++ProbeAmt;
+  }
+}
+
+
+/// FindKey - Look up the bucket that contains the specified key. If it exists
+/// in the map, return the bucket number of the key.  Otherwise return -1.
+/// This does not modify the map.
+int StringMapImpl::FindKey(StringRef Key) const {
+  unsigned HTSize = NumBuckets;
+  if (HTSize == 0) return -1;  // Really empty table?
+  unsigned FullHashValue = HashString(Key);
+  unsigned BucketNo = FullHashValue & (HTSize-1);
+  unsigned *HashTable = (unsigned *)(TheTable + NumBuckets + 1);
+
+  unsigned ProbeAmt = 1;
+  while (1) {
+    StringMapEntryBase *BucketItem = TheTable[BucketNo];
+    // If we found an empty bucket, this key isn't in the table yet, return.
+    if (LLVM_LIKELY(!BucketItem))
+      return -1;
+
+    if (BucketItem == getTombstoneVal()) {
+      // Ignore tombstones.
+    } else if (LLVM_LIKELY(HashTable[BucketNo] == FullHashValue)) {
+      // If the full hash value matches, check deeply for a match.  The common
+      // case here is that we are only looking at the buckets (for item info
+      // being non-null and for the full hash value) not at the items.  This
+      // is important for cache locality.
+
+      // Do the comparison like this because NameStart isn't necessarily
+      // null-terminated!
+      char *ItemStr = (char*)BucketItem+ItemSize;
+      if (Key == StringRef(ItemStr, BucketItem->getKeyLength())) {
+        // We found a match!
+        return BucketNo;
+      }
+    }
+
+    // Okay, we didn't find the item.  Probe to the next bucket.
+    BucketNo = (BucketNo+ProbeAmt) & (HTSize-1);
+
+    // Use quadratic probing, it has fewer clumping artifacts than linear
+    // probing and has good cache behavior in the common case.
+    ++ProbeAmt;
+  }
+}
+
+/// RemoveKey - Remove the specified StringMapEntry from the table, but do not
+/// delete it.  This aborts if the value isn't in the table.
+void StringMapImpl::RemoveKey(StringMapEntryBase *V) {
+  const char *VStr = (char*)V + ItemSize;
+  StringMapEntryBase *V2 = RemoveKey(StringRef(VStr, V->getKeyLength()));
+  (void)V2;
+  assert(V == V2 && "Didn't find key?");
+}
+
+/// RemoveKey - Remove the StringMapEntry for the specified key from the
+/// table, returning it.  If the key is not in the table, this returns null.
+StringMapEntryBase *StringMapImpl::RemoveKey(StringRef Key) {
+  int Bucket = FindKey(Key);
+  if (Bucket == -1) return nullptr;
+
+  StringMapEntryBase *Result = TheTable[Bucket];
+  TheTable[Bucket] = getTombstoneVal();
+  --NumItems;
+  ++NumTombstones;
+  assert(NumItems + NumTombstones <= NumBuckets);
+
+  return Result;
+}
+
+
+
+/// RehashTable - Grow the table, redistributing values into the buckets with
+/// the appropriate mod-of-hashtable-size.
+unsigned StringMapImpl::RehashTable(unsigned BucketNo) {
+  unsigned NewSize;
+  unsigned *HashTable = (unsigned *)(TheTable + NumBuckets + 1);
+
+  // If the hash table is now more than 3/4 full, or if fewer than 1/8 of
+  // the buckets are empty (meaning that many are filled with tombstones),
+  // grow/rehash the table.
+  if (LLVM_UNLIKELY(NumItems * 4 > NumBuckets * 3)) {
+    NewSize = NumBuckets*2;
+  } else if (LLVM_UNLIKELY(NumBuckets - (NumItems + NumTombstones) <=
+                           NumBuckets / 8)) {
+    NewSize = NumBuckets;
+  } else {
+    return BucketNo;
+  }
+
+  unsigned NewBucketNo = BucketNo;
+  // Allocate one extra bucket which will always be non-empty.  This allows the
+  // iterators to stop at end.
+  StringMapEntryBase **NewTableArray =
+    (StringMapEntryBase **)calloc(NewSize+1, sizeof(StringMapEntryBase *) +
+                                             sizeof(unsigned));
+  unsigned *NewHashArray = (unsigned *)(NewTableArray + NewSize + 1);
+  NewTableArray[NewSize] = (StringMapEntryBase*)2;
+
+  // Rehash all the items into their new buckets.  Luckily :) we already have
+  // the hash values available, so we don't have to rehash any strings.
+  for (unsigned I = 0, E = NumBuckets; I != E; ++I) {
+    StringMapEntryBase *Bucket = TheTable[I];
+    if (Bucket && Bucket != getTombstoneVal()) {
+      // Fast case, bucket available.
+      unsigned FullHash = HashTable[I];
+      unsigned NewBucket = FullHash & (NewSize-1);
+      if (!NewTableArray[NewBucket]) {
+        NewTableArray[FullHash & (NewSize-1)] = Bucket;
+        NewHashArray[FullHash & (NewSize-1)] = FullHash;
+        if (I == BucketNo)
+          NewBucketNo = NewBucket;
+        continue;
+      }
+
+      // Otherwise probe for a spot.
+      unsigned ProbeSize = 1;
+      do {
+        NewBucket = (NewBucket + ProbeSize++) & (NewSize-1);
+      } while (NewTableArray[NewBucket]);
+
+      // Finally found a slot.  Fill it in.
+      NewTableArray[NewBucket] = Bucket;
+      NewHashArray[NewBucket] = FullHash;
+      if (I == BucketNo)
+        NewBucketNo = NewBucket;
+    }
+  }
+
+  free(TheTable);
+
+  TheTable = NewTableArray;
+  NumBuckets = NewSize;
+  NumTombstones = 0;
+  return NewBucketNo;
+}

src/main/native/cpp/llvm/StringRef.cpp

@@ -0,0 +1,452 @@
+//===-- StringRef.cpp - Lightweight String References ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/StringRef.h"
+#include "llvm/Hashing.h"
+#include "llvm/SmallVector.h"
+#include <bitset>
+#include <climits>
+
+using namespace llvm;
+
+// MSVC emits references to this into the translation units which reference it.
+#ifndef _MSC_VER
+const size_t StringRef::npos;
+#endif
+
+static char ascii_tolower(char x) {
+  if (x >= 'A' && x <= 'Z')
+    return x - 'A' + 'a';
+  return x;
+}
+
+static char ascii_toupper(char x) {
+  if (x >= 'a' && x <= 'z')
+    return x - 'a' + 'A';
+  return x;
+}
+
+static bool ascii_isdigit(char x) {
+  return x >= '0' && x <= '9';
+}
+
+// strncasecmp() is not available on non-POSIX systems, so define an
+// alternative function here.
+static int ascii_strncasecmp(const char *LHS, const char *RHS, size_t Length) {
+  for (size_t I = 0; I < Length; ++I) {
+    unsigned char LHC = ascii_tolower(LHS[I]);
+    unsigned char RHC = ascii_tolower(RHS[I]);
+    if (LHC != RHC)
+      return LHC < RHC ? -1 : 1;
+  }
+  return 0;
+}
+
+/// compare_lower - Compare strings, ignoring case.
+int StringRef::compare_lower(StringRef RHS) const {
+  if (int Res = ascii_strncasecmp(Data, RHS.Data, std::min(size(), RHS.size())))
+    return Res;
+  if (size() == RHS.size())
+    return 0;
+  return size() < RHS.size() ? -1 : 1;
+}
+
+/// Check if this string starts with the given \p Prefix, ignoring case.
+bool StringRef::startswith_lower(StringRef Prefix) const {
+  return size() >= Prefix.size() &&
+      ascii_strncasecmp(Data, Prefix.Data, Prefix.size()) == 0;
+}
+
+/// Check if this string ends with the given \p Suffix, ignoring case.
+bool StringRef::endswith_lower(StringRef Suffix) const {
+  return size() >= Suffix.size() &&
+      ascii_strncasecmp(end() - Suffix.size(), Suffix.Data, Suffix.size()) == 0;
+}
+
+/// compare_numeric - Compare strings, handle embedded numbers.
+int StringRef::compare_numeric(StringRef RHS) const {
+  for (size_t I = 0, E = std::min(size(), RHS.size()); I != E; ++I) {
+    // Check for sequences of digits.
+    if (ascii_isdigit(Data[I]) && ascii_isdigit(RHS.Data[I])) {
+      // The longer sequence of numbers is considered larger.
+      // This doesn't really handle prefixed zeros well.
+      size_t J;
+      for (J = I + 1; J != E + 1; ++J) {
+        bool ld = J < size() && ascii_isdigit(Data[J]);
+        bool rd = J < RHS.size() && ascii_isdigit(RHS.Data[J]);
+        if (ld != rd)
+          return rd ? -1 : 1;
+        if (!rd)
+          break;
+      }
+      // The two number sequences have the same length (J-I), just memcmp them.
+      if (int Res = compareMemory(Data + I, RHS.Data + I, J - I))
+        return Res < 0 ? -1 : 1;
+      // Identical number sequences, continue search after the numbers.
+      I = J - 1;
+      continue;
+    }
+    if (Data[I] != RHS.Data[I])
+      return (unsigned char)Data[I] < (unsigned char)RHS.Data[I] ? -1 : 1;
+  }
+  if (size() == RHS.size())
+    return 0;
+  return size() < RHS.size() ? -1 : 1;
+}
+
+//===----------------------------------------------------------------------===//
+// String Operations
+//===----------------------------------------------------------------------===//
+
+std::string StringRef::lower() const {
+  std::string Result(size(), char());
+  for (size_type i = 0, e = size(); i != e; ++i) {
+    Result[i] = ascii_tolower(Data[i]);
+  }
+  return Result;
+}
+
+std::string StringRef::upper() const {
+  std::string Result(size(), char());
+  for (size_type i = 0, e = size(); i != e; ++i) {
+    Result[i] = ascii_toupper(Data[i]);
+  }
+  return Result;
+}
+
+const char *StringRef::c_str(llvm::SmallVectorImpl<char>& buf) const {
+  if (is_null_terminated()) {
+    // If null terminated, return data directly
+    return data();
+  } else {
+    // If not null terminated, use SmallVectorImpl to store data
+    // copy data, and return a known null terminated string
+    buf.clear();
+    buf.append(begin(), end());
+    buf.push_back(0);
+    return buf.begin();
+  }
+}
+
+//===----------------------------------------------------------------------===//
+// String Searching
+//===----------------------------------------------------------------------===//
+
+
+/// find - Search for the first string \arg Str in the string.
+///
+/// \return - The index of the first occurrence of \arg Str, or npos if not
+/// found.
+size_t StringRef::find(StringRef Str, size_t From) const {
+  if (From > size())
+    return npos;
+
+  const char *Needle = Str.data();
+  size_t N = Str.size();
+  if (N == 0)
+    return From;
+
+  size_t Size = size() - From;
+  if (Size < N)
+    return npos;
+
+  const char *Start = Data + From;
+  const char *Stop = Start + (Size - N + 1);
+
+  // For short haystacks or unsupported needles fall back to the naive algorithm
+  if (Size < 16 || N > 255) {
+    do {
+      if (std::memcmp(Start, Needle, N) == 0)
+        return Start - Data;
+      ++Start;
+    } while (Start < Stop);
+    return npos;
+  }
+
+  // Build the bad char heuristic table, with uint8_t to reduce cache thrashing.
+  uint8_t BadCharSkip[256];
+  std::memset(BadCharSkip, N, 256);
+  for (unsigned i = 0; i != N-1; ++i)
+    BadCharSkip[(uint8_t)Str[i]] = N-1-i;
+
+  do {
+    if (std::memcmp(Start, Needle, N) == 0)
+      return Start - Data;
+
+    // Otherwise skip the appropriate number of bytes.
+    Start += BadCharSkip[(uint8_t)Start[N-1]];
+  } while (Start < Stop);
+
+  return npos;
+}
+
+/// rfind - Search for the last string \arg Str in the string.
+///
+/// \return - The index of the last occurrence of \arg Str, or npos if not
+/// found.
+size_t StringRef::rfind(StringRef Str) const {
+  size_t N = Str.size();
+  if (N > size())
+    return npos;
+  for (size_t i = size() - N + 1, e = 0; i != e;) {
+    --i;
+    if (substr(i, N).equals(Str))
+      return i;
+  }
+  return npos;
+}
+
+/// find_first_of - Find the first character in the string that is in \arg
+/// Chars, or npos if not found.
+///
+/// Note: O(size() + Chars.size())
+StringRef::size_type StringRef::find_first_of(StringRef Chars,
+                                              size_t From) const {
+  std::bitset<1 << CHAR_BIT> CharBits;
+  for (size_type i = 0; i != Chars.size(); ++i)
+    CharBits.set((unsigned char)Chars[i]);
+
+  for (size_type i = std::min(From, size()), e = size(); i != e; ++i)
+    if (CharBits.test((unsigned char)Data[i]))
+      return i;
+  return npos;
+}
+
+/// find_first_not_of - Find the first character in the string that is not
+/// \arg C or npos if not found.
+StringRef::size_type StringRef::find_first_not_of(char C, size_t From) const {
+  for (size_type i = std::min(From, size()), e = size(); i != e; ++i)
+    if (Data[i] != C)
+      return i;
+  return npos;
+}
+
+/// find_first_not_of - Find the first character in the string that is not
+/// in the string \arg Chars, or npos if not found.
+///
+/// Note: O(size() + Chars.size())
+StringRef::size_type StringRef::find_first_not_of(StringRef Chars,
+                                                  size_t From) const {
+  std::bitset<1 << CHAR_BIT> CharBits;
+  for (size_type i = 0; i != Chars.size(); ++i)
+    CharBits.set((unsigned char)Chars[i]);
+
+  for (size_type i = std::min(From, size()), e = size(); i != e; ++i)
+    if (!CharBits.test((unsigned char)Data[i]))
+      return i;
+  return npos;
+}
+
+/// find_last_of - Find the last character in the string that is in \arg C,
+/// or npos if not found.
+///
+/// Note: O(size() + Chars.size())
+StringRef::size_type StringRef::find_last_of(StringRef Chars,
+                                             size_t From) const {
+  std::bitset<1 << CHAR_BIT> CharBits;
+  for (size_type i = 0; i != Chars.size(); ++i)
+    CharBits.set((unsigned char)Chars[i]);
+
+  for (size_type i = std::min(From, size()) - 1, e = -1; i != e; --i)
+    if (CharBits.test((unsigned char)Data[i]))
+      return i;
+  return npos;
+}
+
+/// find_last_not_of - Find the last character in the string that is not
+/// \arg C, or npos if not found.
+StringRef::size_type StringRef::find_last_not_of(char C, size_t From) const {
+  for (size_type i = std::min(From, size()) - 1, e = -1; i != e; --i)
+    if (Data[i] != C)
+      return i;
+  return npos;
+}
+
+/// find_last_not_of - Find the last character in the string that is not in
+/// \arg Chars, or npos if not found.
+///
+/// Note: O(size() + Chars.size())
+StringRef::size_type StringRef::find_last_not_of(StringRef Chars,
+                                                 size_t From) const {
+  std::bitset<1 << CHAR_BIT> CharBits;
+  for (size_type i = 0, e = Chars.size(); i != e; ++i)
+    CharBits.set((unsigned char)Chars[i]);
+
+  for (size_type i = std::min(From, size()) - 1, e = -1; i != e; --i)
+    if (!CharBits.test((unsigned char)Data[i]))
+      return i;
+  return npos;
+}
+
+void StringRef::split(SmallVectorImpl<StringRef> &A,
+                      StringRef Separator, int MaxSplit,
+                      bool KeepEmpty) const {
+  StringRef S = *this;
+
+  // Count down from MaxSplit. When MaxSplit is -1, this will just split
+  // "forever". This doesn't support splitting more than 2^31 times
+  // intentionally; if we ever want that we can make MaxSplit a 64-bit integer
+  // but that seems unlikely to be useful.
+  while (MaxSplit-- != 0) {
+    size_t Idx = S.find(Separator);
+    if (Idx == npos)
+      break;
+
+    // Push this split.
+    if (KeepEmpty || Idx > 0)
+      A.push_back(S.slice(0, Idx));
+
+    // Jump forward.
+    S = S.slice(Idx + Separator.size(), npos);
+  }
+
+  // Push the tail.
+  if (KeepEmpty || !S.empty())
+    A.push_back(S);
+}
+
+void StringRef::split(SmallVectorImpl<StringRef> &A, char Separator,
+                      int MaxSplit, bool KeepEmpty) const {
+  StringRef S = *this;
+
+  // Count down from MaxSplit. When MaxSplit is -1, this will just split
+  // "forever". This doesn't support splitting more than 2^31 times
+  // intentionally; if we ever want that we can make MaxSplit a 64-bit integer
+  // but that seems unlikely to be useful.
+  while (MaxSplit-- != 0) {
+    size_t Idx = S.find(Separator);
+    if (Idx == npos)
+      break;
+
+    // Push this split.
+    if (KeepEmpty || Idx > 0)
+      A.push_back(S.slice(0, Idx));
+
+    // Jump forward.
+    S = S.slice(Idx + 1, npos);
+  }
+
+  // Push the tail.
+  if (KeepEmpty || !S.empty())
+    A.push_back(S);
+}
+
+//===----------------------------------------------------------------------===//
+// Helpful Algorithms
+//===----------------------------------------------------------------------===//
+
+/// count - Return the number of non-overlapped occurrences of \arg Str in
+/// the string.
+size_t StringRef::count(StringRef Str) const {
+  size_t Count = 0;
+  size_t N = Str.size();
+  if (N > size())
+    return 0;
+  for (size_t i = 0, e = size() - N + 1; i != e; ++i)
+    if (substr(i, N).equals(Str))
+      ++Count;
+  return Count;
+}
+
+static unsigned GetAutoSenseRadix(StringRef &Str) {
+  if (Str.startswith("0x") || Str.startswith("0X")) {
+    Str = Str.substr(2);
+    return 16;
+  }
+
+  if (Str.startswith("0b") || Str.startswith("0B")) {
+    Str = Str.substr(2);
+    return 2;
+  }
+
+  if (Str.startswith("0o")) {
+    Str = Str.substr(2);
+    return 8;
+  }
+
+  if (Str.startswith("0"))
+    return 8;
+
+  return 10;
+}
+
+
+/// GetAsUnsignedInteger - Workhorse method that converts a integer character
+/// sequence of radix up to 36 to an unsigned long long value.
+bool llvm::getAsUnsignedInteger(StringRef Str, unsigned Radix,
+                                unsigned long long &Result) {
+  // Autosense radix if not specified.
+  if (Radix == 0)
+    Radix = GetAutoSenseRadix(Str);
+
+  // Empty strings (after the radix autosense) are invalid.
+  if (Str.empty()) return true;
+
+  // Parse all the bytes of the string given this radix.  Watch for overflow.
+  Result = 0;
+  while (!Str.empty()) {
+    unsigned CharVal;
+    if (Str[0] >= '0' && Str[0] <= '9')
+      CharVal = Str[0]-'0';
+    else if (Str[0] >= 'a' && Str[0] <= 'z')
+      CharVal = Str[0]-'a'+10;
+    else if (Str[0] >= 'A' && Str[0] <= 'Z')
+      CharVal = Str[0]-'A'+10;
+    else
+      return true;
+
+    // If the parsed value is larger than the integer radix, the string is
+    // invalid.
+    if (CharVal >= Radix)
+      return true;
+
+    // Add in this character.
+    unsigned long long PrevResult = Result;
+    Result = Result*Radix+CharVal;
+
+    // Check for overflow by shifting back and seeing if bits were lost.
+    if (Result/Radix < PrevResult)
+      return true;
+
+    Str = Str.substr(1);
+  }
+
+  return false;
+}
+
+bool llvm::getAsSignedInteger(StringRef Str, unsigned Radix,
+                              long long &Result) {
+  unsigned long long ULLVal;
+
+  // Handle positive strings first.
+  if (Str.empty() || Str.front() != '-') {
+    if (getAsUnsignedInteger(Str, Radix, ULLVal) ||
+        // Check for value so large it overflows a signed value.
+        (long long)ULLVal < 0)
+      return true;
+    Result = ULLVal;
+    return false;
+  }
+
+  // Get the positive part of the value.
+  if (getAsUnsignedInteger(Str.substr(1), Radix, ULLVal) ||
+      // Reject values so large they'd overflow as negative signed, but allow
+      // "-0".  This negates the unsigned so that the negative isn't undefined
+      // on signed overflow.
+      (long long)-ULLVal > 0)
+    return true;
+
+  Result = -ULLVal;
+  return false;
+}
+
+// Implementation of StringRef hashing.
+hash_code llvm::hash_value(StringRef S) {
+  return hash_combine_range(S.begin(), S.end());
+}

src/main/native/cpp/llvm/raw_os_ostream.cpp

@@ -0,0 +1,30 @@
+//===--- raw_os_ostream.cpp - Implement the raw_os_ostream class ----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This implements support adapting raw_ostream to std::ostream.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/raw_os_ostream.h"
+#include <ostream>
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+//  raw_os_ostream
+//===----------------------------------------------------------------------===//
+
+raw_os_ostream::~raw_os_ostream() {
+  flush();
+}
+
+void raw_os_ostream::write_impl(const char *Ptr, size_t Size) {
+  OS.write(Ptr, Size);
+}
+
+uint64_t raw_os_ostream::current_pos() const { return OS.tellp(); }

src/main/native/cpp/llvm/raw_ostream.cpp

@@ -0,0 +1,855 @@
+//===--- raw_ostream.cpp - Implement the raw_ostream classes --------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This implements support for bulk buffered stream output.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/raw_ostream.h"
+#include "llvm/SmallString.h"
+#include "llvm/SmallVector.h"
+#include "llvm/StringExtras.h"
+#include "llvm/Compiler.h"
+#include "llvm/Format.h"
+#include "llvm/MathExtras.h"
+#include "llvm/WindowsError.h"
+#include <cctype>
+#include <cerrno>
+#include <sys/stat.h>
+#include <system_error>
+
+// <fcntl.h> may provide O_BINARY.
+#include <fcntl.h>
+
+#ifndef _WIN32
+#include <unistd.h>
+#include <sys/uio.h>
+#endif
+
+#if defined(__CYGWIN__)
+#include <io.h>
+#endif
+
+#if defined(_MSC_VER)
+#include <io.h>
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+#endif
+
+#if defined(_WIN32)
+#include <windows.h>
+
+/// Determines if the program is running on Windows 8 or newer. This
+/// reimplements one of the helpers in the Windows 8.1 SDK, which are intended
+/// to supercede raw calls to GetVersionEx. Old SDKs, Cygwin, and MinGW don't
+/// yet have VersionHelpers.h, so we have our own helper.
+static inline bool RunningWindows8OrGreater() {
+  // Windows 8 is version 6.2, service pack 0.
+  OSVERSIONINFOEXW osvi = {};
+  osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+  osvi.dwMajorVersion = 6;
+  osvi.dwMinorVersion = 2;
+  osvi.wServicePackMajor = 0;
+
+  DWORDLONG Mask = 0;
+  Mask = VerSetConditionMask(Mask, VER_MAJORVERSION, VER_GREATER_EQUAL);
+  Mask = VerSetConditionMask(Mask, VER_MINORVERSION, VER_GREATER_EQUAL);
+  Mask = VerSetConditionMask(Mask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
+
+  return VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION |
+                                       VER_SERVICEPACKMAJOR,
+                            Mask) != FALSE;
+}
+
+static std::error_code UTF8ToUTF16(llvm::StringRef utf8,
+                                   llvm::SmallVectorImpl<wchar_t> &utf16) {
+  if (!utf8.empty()) {
+    int len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, utf8.begin(),
+                                    utf8.size(), utf16.begin(), 0);
+
+    if (len == 0)
+      return llvm::mapWindowsError(::GetLastError());
+
+    utf16.reserve(len + 1);
+    utf16.set_size(len);
+
+    len = ::MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, utf8.begin(),
+                                utf8.size(), utf16.begin(), utf16.size());
+
+    if (len == 0)
+      return llvm::mapWindowsError(::GetLastError());
+  }
+
+  // Make utf16 null terminated.
+  utf16.push_back(0);
+  utf16.pop_back();
+
+  return std::error_code();
+}
+
+#endif
+
+using namespace llvm;
+
+raw_ostream::~raw_ostream() {
+  // raw_ostream's subclasses should take care to flush the buffer
+  // in their destructors.
+  assert(OutBufCur == OutBufStart &&
+         "raw_ostream destructor called with non-empty buffer!");
+
+  if (BufferMode == InternalBuffer)
+    delete [] OutBufStart;
+}
+
+// An out of line virtual method to provide a home for the class vtable.
+void raw_ostream::handle() {}
+
+size_t raw_ostream::preferred_buffer_size() const {
+  // BUFSIZ is intended to be a reasonable default.
+  return BUFSIZ;
+}
+
+void raw_ostream::SetBuffered() {
+  // Ask the subclass to determine an appropriate buffer size.
+  if (size_t Size = preferred_buffer_size())
+    SetBufferSize(Size);
+  else
+    // It may return 0, meaning this stream should be unbuffered.
+    SetUnbuffered();
+}
+
+void raw_ostream::SetBufferAndMode(char *BufferStart, size_t Size,
+                                   BufferKind Mode) {
+  assert(((Mode == Unbuffered && !BufferStart && Size == 0) ||
+          (Mode != Unbuffered && BufferStart && Size != 0)) &&
+         "stream must be unbuffered or have at least one byte");
+  // Make sure the current buffer is free of content (we can't flush here; the
+  // child buffer management logic will be in write_impl).
+  assert(GetNumBytesInBuffer() == 0 && "Current buffer is non-empty!");
+
+  if (BufferMode == InternalBuffer)
+    delete [] OutBufStart;
+  OutBufStart = BufferStart;
+  OutBufEnd = OutBufStart+Size;
+  OutBufCur = OutBufStart;
+  BufferMode = Mode;
+
+  assert(OutBufStart <= OutBufEnd && "Invalid size!");
+}
+
+raw_ostream &raw_ostream::operator<<(unsigned long N) {
+  // Zero is a special case.
+  if (N == 0)
+    return *this << '0';
+
+  char NumberBuffer[20];
+  char *EndPtr = NumberBuffer+sizeof(NumberBuffer);
+  char *CurPtr = EndPtr;
+
+  while (N) {
+    *--CurPtr = '0' + char(N % 10);
+    N /= 10;
+  }
+  return write(CurPtr, EndPtr-CurPtr);
+}
+
+raw_ostream &raw_ostream::operator<<(long N) {
+  if (N <  0) {
+    *this << '-';
+    // Avoid undefined behavior on LONG_MIN with a cast.
+    N = -(unsigned long)N;
+  }
+
+  return this->operator<<(static_cast<unsigned long>(N));
+}
+
+raw_ostream &raw_ostream::operator<<(unsigned long long N) {
+  // Output using 32-bit div/mod when possible.
+  if (N == static_cast<unsigned long>(N))
+    return this->operator<<(static_cast<unsigned long>(N));
+
+  char NumberBuffer[20];
+  char *EndPtr = std::end(NumberBuffer);
+  char *CurPtr = EndPtr;
+
+  while (N) {
+    *--CurPtr = '0' + char(N % 10);
+    N /= 10;
+  }
+  return write(CurPtr, EndPtr-CurPtr);
+}
+
+raw_ostream &raw_ostream::operator<<(long long N) {
+  if (N < 0) {
+    *this << '-';
+    // Avoid undefined behavior on INT64_MIN with a cast.
+    N = -(unsigned long long)N;
+  }
+
+  return this->operator<<(static_cast<unsigned long long>(N));
+}
+
+raw_ostream &raw_ostream::write_hex(unsigned long long N) {
+  // Zero is a special case.
+  if (N == 0)
+    return *this << '0';
+
+  char NumberBuffer[16];
+  char *EndPtr = std::end(NumberBuffer);
+  char *CurPtr = EndPtr;
+
+  while (N) {
+    unsigned char x = static_cast<unsigned char>(N) % 16;
+    *--CurPtr = hexdigit(x, /*LowerCase*/true);
+    N /= 16;
+  }
+
+  return write(CurPtr, EndPtr-CurPtr);
+}
+
+raw_ostream &raw_ostream::write_escaped(StringRef Str,
+                                        bool UseHexEscapes) {
+  for (unsigned char c : Str) {
+    switch (c) {
+    case '\\':
+      *this << '\\' << '\\';
+      break;
+    case '\t':
+      *this << '\\' << 't';
+      break;
+    case '\n':
+      *this << '\\' << 'n';
+      break;
+    case '"':
+      *this << '\\' << '"';
+      break;
+    default:
+      if (std::isprint(c)) {
+        *this << c;
+        break;
+      }
+
+      // Write out the escaped representation.
+      if (UseHexEscapes) {
+        *this << '\\' << 'x';
+        *this << hexdigit((c >> 4 & 0xF));
+        *this << hexdigit((c >> 0) & 0xF);
+      } else {
+        // Always use a full 3-character octal escape.
+        *this << '\\';
+        *this << char('0' + ((c >> 6) & 7));
+        *this << char('0' + ((c >> 3) & 7));
+        *this << char('0' + ((c >> 0) & 7));
+      }
+    }
+  }
+
+  return *this;
+}
+
+raw_ostream &raw_ostream::operator<<(const void *P) {
+  *this << '0' << 'x';
+
+  return write_hex((uintptr_t) P);
+}
+
+raw_ostream &raw_ostream::operator<<(double N) {
+#ifdef _WIN32
+  // On MSVCRT and compatible, output of %e is incompatible to Posix
+  // by default. Number of exponent digits should be at least 2. "%+03d"
+  // FIXME: Implement our formatter to here or Support/Format.h!
+#if defined(__MINGW32__)
+  // FIXME: It should be generic to C++11.
+  if (N == 0.0 && std::signbit(N))
+    return *this << "-0.000000e+00";
+#else
+  int fpcl = _fpclass(N);
+
+  // negative zero
+  if (fpcl == _FPCLASS_NZ)
+    return *this << "-0.000000e+00";
+#endif
+
+  char buf[16];
+  unsigned len;
+  len = format("%e", N).snprint(buf, sizeof(buf));
+  if (len <= sizeof(buf) - 2) {
+    if (len >= 5 && buf[len - 5] == 'e' && buf[len - 3] == '0') {
+      int cs = buf[len - 4];
+      if (cs == '+' || cs == '-') {
+        int c1 = buf[len - 2];
+        int c0 = buf[len - 1];
+        if (isdigit(static_cast<unsigned char>(c1)) &&
+            isdigit(static_cast<unsigned char>(c0))) {
+          // Trim leading '0': "...e+012" -> "...e+12\0"
+          buf[len - 3] = c1;
+          buf[len - 2] = c0;
+          buf[--len] = 0;
+        }
+      }
+    }
+    return this->operator<<(buf);
+  }
+#endif
+  return this->operator<<(format("%e", N));
+}
+
+
+
+void raw_ostream::flush_nonempty() {
+  assert(OutBufCur > OutBufStart && "Invalid call to flush_nonempty.");
+  size_t Length = OutBufCur - OutBufStart;
+  OutBufCur = OutBufStart;
+  write_impl(OutBufStart, Length);
+}
+
+raw_ostream &raw_ostream::write(unsigned char C) {
+  // Group exceptional cases into a single branch.
+  if (LLVM_UNLIKELY(OutBufCur >= OutBufEnd)) {
+    if (LLVM_UNLIKELY(!OutBufStart)) {
+      if (BufferMode == Unbuffered) {
+        write_impl(reinterpret_cast<char*>(&C), 1);
+        return *this;
+      }
+      // Set up a buffer and start over.
+      SetBuffered();
+      return write(C);
+    }
+
+    flush_nonempty();
+  }
+
+  *OutBufCur++ = C;
+  return *this;
+}
+
+raw_ostream &raw_ostream::write(const char *Ptr, size_t Size) {
+  // Group exceptional cases into a single branch.
+  if (LLVM_UNLIKELY(size_t(OutBufEnd - OutBufCur) < Size)) {
+    if (LLVM_UNLIKELY(!OutBufStart)) {
+      if (BufferMode == Unbuffered) {
+        write_impl(Ptr, Size);
+        return *this;
+      }
+      // Set up a buffer and start over.
+      SetBuffered();
+      return write(Ptr, Size);
+    }
+
+    size_t NumBytes = OutBufEnd - OutBufCur;
+
+    // If the buffer is empty at this point we have a string that is larger
+    // than the buffer. Directly write the chunk that is a multiple of the
+    // preferred buffer size and put the remainder in the buffer.
+    if (LLVM_UNLIKELY(OutBufCur == OutBufStart)) {
+      assert(NumBytes != 0 && "undefined behavior");
+      size_t BytesToWrite = Size - (Size % NumBytes);
+      write_impl(Ptr, BytesToWrite);
+      size_t BytesRemaining = Size - BytesToWrite;
+      if (BytesRemaining > size_t(OutBufEnd - OutBufCur)) {
+        // Too much left over to copy into our buffer.
+        return write(Ptr + BytesToWrite, BytesRemaining);
+      }
+      copy_to_buffer(Ptr + BytesToWrite, BytesRemaining);
+      return *this;
+    }
+
+    // We don't have enough space in the buffer to fit the string in. Insert as
+    // much as possible, flush and start over with the remainder.
+    copy_to_buffer(Ptr, NumBytes);
+    flush_nonempty();
+    return write(Ptr + NumBytes, Size - NumBytes);
+  }
+
+  copy_to_buffer(Ptr, Size);
+
+  return *this;
+}
+
+void raw_ostream::copy_to_buffer(const char *Ptr, size_t Size) {
+  assert(Size <= size_t(OutBufEnd - OutBufCur) && "Buffer overrun!");
+
+  // Handle short strings specially, memcpy isn't very good at very short
+  // strings.
+  switch (Size) {
+  case 4: OutBufCur[3] = Ptr[3]; // FALL THROUGH
+  case 3: OutBufCur[2] = Ptr[2]; // FALL THROUGH
+  case 2: OutBufCur[1] = Ptr[1]; // FALL THROUGH
+  case 1: OutBufCur[0] = Ptr[0]; // FALL THROUGH
+  case 0: break;
+  default:
+    memcpy(OutBufCur, Ptr, Size);
+    break;
+  }
+
+  OutBufCur += Size;
+}
+
+// Formatted output.
+raw_ostream &raw_ostream::operator<<(const format_object_base &Fmt) {
+  // If we have more than a few bytes left in our output buffer, try
+  // formatting directly onto its end.
+  size_t NextBufferSize = 127;
+  size_t BufferBytesLeft = OutBufEnd - OutBufCur;
+  if (BufferBytesLeft > 3) {
+    size_t BytesUsed = Fmt.print(OutBufCur, BufferBytesLeft);
+
+    // Common case is that we have plenty of space.
+    if (BytesUsed <= BufferBytesLeft) {
+      OutBufCur += BytesUsed;
+      return *this;
+    }
+
+    // Otherwise, we overflowed and the return value tells us the size to try
+    // again with.
+    NextBufferSize = BytesUsed;
+  }
+
+  // If we got here, we didn't have enough space in the output buffer for the
+  // string.  Try printing into a SmallVector that is resized to have enough
+  // space.  Iterate until we win.
+  SmallVector<char, 128> V;
+
+  while (1) {
+    V.resize(NextBufferSize);
+
+    // Try formatting into the SmallVector.
+    size_t BytesUsed = Fmt.print(V.data(), NextBufferSize);
+
+    // If BytesUsed fit into the vector, we win.
+    if (BytesUsed <= NextBufferSize)
+      return write(V.data(), BytesUsed);
+
+    // Otherwise, try again with a new size.
+    assert(BytesUsed > NextBufferSize && "Didn't grow buffer!?");
+    NextBufferSize = BytesUsed;
+  }
+}
+
+raw_ostream &raw_ostream::operator<<(const FormattedString &FS) {
+  unsigned Len = FS.Str.size(); 
+  int PadAmount = FS.Width - Len;
+  if (FS.RightJustify && (PadAmount > 0))
+    this->indent(PadAmount);
+  this->operator<<(FS.Str);
+  if (!FS.RightJustify && (PadAmount > 0))
+    this->indent(PadAmount);
+  return *this;
+}
+
+raw_ostream &raw_ostream::operator<<(const FormattedNumber &FN) {
+  if (FN.Hex) {
+    unsigned Nibbles = (64 - countLeadingZeros(FN.HexValue)+3)/4;
+    unsigned PrefixChars = FN.HexPrefix ? 2 : 0;
+    unsigned Width = std::max(FN.Width, Nibbles + PrefixChars);
+
+    char NumberBuffer[20] = "0x0000000000000000";
+    if (!FN.HexPrefix)
+      NumberBuffer[1] = '0';
+    char *EndPtr = NumberBuffer+Width;
+    char *CurPtr = EndPtr;
+    unsigned long long N = FN.HexValue;
+    while (N) {
+      unsigned char x = static_cast<unsigned char>(N) % 16;
+      *--CurPtr = hexdigit(x, !FN.Upper);
+      N /= 16;
+    }
+
+    return write(NumberBuffer, Width);
+  } else {
+    // Zero is a special case.
+    if (FN.DecValue == 0) {
+      this->indent(FN.Width-1);
+      return *this << '0';
+    }
+    char NumberBuffer[32];
+    char *EndPtr = NumberBuffer+sizeof(NumberBuffer);
+    char *CurPtr = EndPtr;
+    bool Neg = (FN.DecValue < 0);
+    uint64_t N = Neg ? -static_cast<uint64_t>(FN.DecValue) : FN.DecValue;
+    while (N) {
+      *--CurPtr = '0' + char(N % 10);
+      N /= 10;
+    }
+    int Len = EndPtr - CurPtr;
+    int Pad = FN.Width - Len;
+    if (Neg) 
+      --Pad;
+    if (Pad > 0)
+      this->indent(Pad);
+    if (Neg)
+      *this << '-';
+    return write(CurPtr, Len);
+  }
+}
+
+
+/// indent - Insert 'NumSpaces' spaces.
+raw_ostream &raw_ostream::indent(unsigned NumSpaces) {
+  static const char Spaces[] = "                                "
+                               "                                "
+                               "                ";
+
+  // Usually the indentation is small, handle it with a fastpath.
+  if (NumSpaces < array_lengthof(Spaces))
+    return write(Spaces, NumSpaces);
+
+  while (NumSpaces) {
+    unsigned NumToWrite = std::min(NumSpaces,
+                                   (unsigned)array_lengthof(Spaces)-1);
+    write(Spaces, NumToWrite);
+    NumSpaces -= NumToWrite;
+  }
+  return *this;
+}
+
+
+//===----------------------------------------------------------------------===//
+//  Formatted Output
+//===----------------------------------------------------------------------===//
+
+// Out of line virtual method.
+void format_object_base::home() {
+}
+
+//===----------------------------------------------------------------------===//
+//  raw_fd_ostream
+//===----------------------------------------------------------------------===//
+
+static int getFD(StringRef Filename, std::error_code &EC,
+                 sys::fs::OpenFlags Flags) {
+  // Handle "-" as stdout. Note that when we do this, we consider ourself
+  // the owner of stdout. This means that we can do things like close the
+  // file descriptor when we're done and set the "binary" flag globally.
+  if (Filename == "-") {
+    EC = std::error_code();
+    // If user requested binary then put stdout into binary mode if
+    // possible.
+    if (!(Flags & sys::fs::F_Text)) {
+#if defined(_WIN32)
+      _setmode(_fileno(stdout), _O_BINARY);
+#endif
+    }
+    return STDOUT_FILENO;
+  }
+
+  int FD;
+
+  //EC = sys::fs::openFileForWrite(Filename, FD, Flags);
+  //if (EC)
+  //  return -1;
+#if defined(_WIN32)
+  // Verify that we don't have both "append" and "excl".
+  assert((!(Flags & sys::fs::F_Excl) || !(Flags & sys::fs::F_Append)) &&
+         "Cannot specify both 'excl' and 'append' file creation flags!");
+
+  SmallVector<wchar_t, 128> PathUTF16;
+
+  EC = UTF8ToUTF16(Filename, PathUTF16);
+  if (EC) return -1;
+
+  DWORD CreationDisposition;
+  if (Flags & sys::fs::F_Excl)
+    CreationDisposition = CREATE_NEW;
+  else if (Flags & sys::fs::F_Append)
+    CreationDisposition = OPEN_ALWAYS;
+  else
+    CreationDisposition = CREATE_ALWAYS;
+
+  DWORD Access = GENERIC_WRITE;
+  if (Flags & sys::fs::F_RW)
+    Access |= GENERIC_READ;
+
+  HANDLE H = ::CreateFileW(PathUTF16.begin(), Access,
+                           FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
+                           CreationDisposition, FILE_ATTRIBUTE_NORMAL, NULL);
+
+  if (H == INVALID_HANDLE_VALUE) {
+    DWORD LastError = ::GetLastError();
+    EC = mapWindowsError(LastError);
+    return -1;
+  }
+
+  int OpenFlags = 0;
+  if (Flags & sys::fs::F_Append)
+    OpenFlags |= _O_APPEND;
+
+  if (Flags & sys::fs::F_Text)
+    OpenFlags |= _O_TEXT;
+
+  FD = ::_open_osfhandle(intptr_t(H), OpenFlags);
+  if (FD == -1) {
+    ::CloseHandle(H);
+    EC = mapWindowsError(ERROR_INVALID_HANDLE);
+    return -1;
+  }
+#else
+  // Verify that we don't have both "append" and "excl".
+  assert((!(Flags & sys::fs::F_Excl) || !(Flags & sys::fs::F_Append)) &&
+         "Cannot specify both 'excl' and 'append' file creation flags!");
+
+  int OpenFlags = O_CREAT;
+
+  if (Flags & sys::fs::F_RW)
+    OpenFlags |= O_RDWR;
+  else
+    OpenFlags |= O_WRONLY;
+
+  if (Flags & sys::fs::F_Append)
+    OpenFlags |= O_APPEND;
+  else
+    OpenFlags |= O_TRUNC;
+
+  if (Flags & sys::fs::F_Excl)
+    OpenFlags |= O_EXCL;
+
+  SmallString<128> Storage{Filename};
+  while ((FD = open(Storage.c_str(), OpenFlags, 0666)) < 0) {
+    if (errno != EINTR) {
+      EC = std::error_code(errno, std::generic_category());
+      return -1;
+    }
+  }
+#endif
+
+  EC = std::error_code();
+  return FD;
+}
+
+raw_fd_ostream::raw_fd_ostream(StringRef Filename, std::error_code &EC,
+                               sys::fs::OpenFlags Flags)
+    : raw_fd_ostream(getFD(Filename, EC, Flags), true) {}
+
+/// FD is the file descriptor that this writes to.  If ShouldClose is true, this
+/// closes the file when the stream is destroyed.
+raw_fd_ostream::raw_fd_ostream(int fd, bool shouldClose, bool unbuffered)
+    : raw_pwrite_stream(unbuffered), FD(fd), ShouldClose(shouldClose),
+      Error(false) {
+  if (FD < 0 ) {
+    ShouldClose = false;
+    return;
+  }
+
+  // Get the starting position.
+  off_t loc = ::lseek(FD, 0, SEEK_CUR);
+#ifdef _WIN32
+  // MSVCRT's _lseek(SEEK_CUR) doesn't return -1 for pipes.
+  SupportsSeeking = loc != (off_t)-1 && ::GetFileType(reinterpret_cast<HANDLE>(::_get_osfhandle(FD))) != FILE_TYPE_PIPE;
+#else
+  SupportsSeeking = loc != (off_t)-1;
+#endif
+  if (!SupportsSeeking)
+    pos = 0;
+  else
+    pos = static_cast<uint64_t>(loc);
+}
+
+raw_fd_ostream::~raw_fd_ostream() {
+  if (FD >= 0) {
+    flush();
+    if (ShouldClose && ::close(FD) < 0)
+      error_detected();
+  }
+
+#ifdef __MINGW32__
+  // On mingw, global dtors should not call exit().
+  // report_fatal_error() invokes exit(). We know report_fatal_error()
+  // might not write messages to stderr when any errors were detected
+  // on FD == 2.
+  if (FD == 2) return;
+#endif
+}
+
+
+void raw_fd_ostream::write_impl(const char *Ptr, size_t Size) {
+  assert(FD >= 0 && "File already closed.");
+  pos += Size;
+
+#ifndef _WIN32
+  bool ShouldWriteInChunks = false;
+#else
+  // Writing a large size of output to Windows console returns ENOMEM. It seems
+  // that, prior to Windows 8, WriteFile() is redirecting to WriteConsole(), and
+  // the latter has a size limit (66000 bytes or less, depending on heap usage).
+  bool ShouldWriteInChunks = !!::_isatty(FD) && !RunningWindows8OrGreater();
+#endif
+
+  do {
+    size_t ChunkSize = Size;
+    if (ChunkSize > 32767 && ShouldWriteInChunks)
+        ChunkSize = 32767;
+
+#ifdef _WIN32
+    int ret = ::_write(FD, Ptr, ChunkSize);
+#else
+    ssize_t ret = ::write(FD, Ptr, ChunkSize);
+#endif
+
+    if (ret < 0) {
+      // If it's a recoverable error, swallow it and retry the write.
+      //
+      // Ideally we wouldn't ever see EAGAIN or EWOULDBLOCK here, since
+      // raw_ostream isn't designed to do non-blocking I/O. However, some
+      // programs, such as old versions of bjam, have mistakenly used
+      // O_NONBLOCK. For compatibility, emulate blocking semantics by
+      // spinning until the write succeeds. If you don't want spinning,
+      // don't use O_NONBLOCK file descriptors with raw_ostream.
+      if (errno == EINTR || errno == EAGAIN
+#ifdef EWOULDBLOCK
+          || errno == EWOULDBLOCK
+#endif
+          )
+        continue;
+
+      // Otherwise it's a non-recoverable error. Note it and quit.
+      error_detected();
+      break;
+    }
+
+    // The write may have written some or all of the data. Update the
+    // size and buffer pointer to reflect the remainder that needs
+    // to be written. If there are no bytes left, we're done.
+    Ptr += ret;
+    Size -= ret;
+  } while (Size > 0);
+}
+
+void raw_fd_ostream::close() {
+  assert(ShouldClose);
+  ShouldClose = false;
+  flush();
+  if (::close(FD) < 0)
+    error_detected();
+  FD = -1;
+}
+
+uint64_t raw_fd_ostream::seek(uint64_t off) {
+  assert(SupportsSeeking && "Stream does not support seeking!");
+  flush();
+  pos = ::lseek(FD, off, SEEK_SET);
+  if (pos == (uint64_t)-1)
+    error_detected();
+  return pos;
+}
+
+void raw_fd_ostream::pwrite_impl(const char *Ptr, size_t Size,
+                                 uint64_t Offset) {
+  uint64_t Pos = tell();
+  seek(Offset);
+  write(Ptr, Size);
+  seek(Pos);
+}
+
+size_t raw_fd_ostream::preferred_buffer_size() const {
+#if !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(__minix)
+  // Windows and Minix have no st_blksize.
+  assert(FD >= 0 && "File not yet open!");
+  struct stat statbuf;
+  if (fstat(FD, &statbuf) != 0)
+    return 0;
+
+  // If this is a terminal, don't use buffering. Line buffering
+  // would be a more traditional thing to do, but it's not worth
+  // the complexity.
+  if (S_ISCHR(statbuf.st_mode) && isatty(FD))
+    return 0;
+  // Return the preferred block size.
+  return statbuf.st_blksize;
+#else
+  return raw_ostream::preferred_buffer_size();
+#endif
+}
+
+//===----------------------------------------------------------------------===//
+//  outs(), errs(), nulls()
+//===----------------------------------------------------------------------===//
+
+/// outs() - This returns a reference to a raw_ostream for standard output.
+/// Use it like: outs() << "foo" << "bar";
+raw_ostream &llvm::outs() {
+  // Set buffer settings to model stdout behavior.  Delete the file descriptor
+  // when the program exits, forcing error detection.  This means that if you
+  // ever call outs(), you can't open another raw_fd_ostream on stdout, as we'll
+  // close stdout twice and print an error the second time.
+  std::error_code EC;
+  static raw_fd_ostream S("-", EC, sys::fs::F_None);
+  assert(!EC);
+  return S;
+}
+
+/// errs() - This returns a reference to a raw_ostream for standard error.
+/// Use it like: errs() << "foo" << "bar";
+raw_ostream &llvm::errs() {
+  // Set standard error to be unbuffered by default.
+  static raw_fd_ostream S(STDERR_FILENO, false, true);
+  return S;
+}
+
+/// nulls() - This returns a reference to a raw_ostream which discards output.
+raw_ostream &llvm::nulls() {
+  static raw_null_ostream S;
+  return S;
+}
+
+
+//===----------------------------------------------------------------------===//
+//  raw_string_ostream
+//===----------------------------------------------------------------------===//
+
+raw_string_ostream::~raw_string_ostream() {
+  flush();
+}
+
+void raw_string_ostream::write_impl(const char *Ptr, size_t Size) {
+  OS.append(Ptr, Size);
+}
+
+//===----------------------------------------------------------------------===//
+//  raw_svector_ostream
+//===----------------------------------------------------------------------===//
+
+uint64_t raw_svector_ostream::current_pos() const { return OS.size(); }
+
+void raw_svector_ostream::write_impl(const char *Ptr, size_t Size) {
+  OS.append(Ptr, Ptr + Size);
+}
+
+void raw_svector_ostream::pwrite_impl(const char *Ptr, size_t Size,
+                                      uint64_t Offset) {
+  memcpy(OS.data() + Offset, Ptr, Size);
+}
+
+//===----------------------------------------------------------------------===//
+//  raw_null_ostream
+//===----------------------------------------------------------------------===//
+
+raw_null_ostream::~raw_null_ostream() {
+#ifndef NDEBUG
+  // ~raw_ostream asserts that the buffer is empty. This isn't necessary
+  // with raw_null_ostream, but it's better to have raw_null_ostream follow
+  // the rules than to change the rules just for raw_null_ostream.
+  flush();
+#endif
+}
+
+void raw_null_ostream::write_impl(const char * /*Ptr*/, size_t /*Size*/) {}
+
+uint64_t raw_null_ostream::current_pos() const {
+  return 0;
+}
+
+void raw_null_ostream::pwrite_impl(const char * /*Ptr*/, size_t /*Size*/,
+                                   uint64_t /*Offset*/) {}

src/main/native/cpp/support/Base64.cpp

@@ -0,0 +1,152 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2015. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+/* ====================================================================
+ * Copyright (c) 1995-1999 The Apache Group.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the Apache Group
+ *    for use in the Apache HTTP server project (http://www.apache.org/)."
+ *
+ * 4. The names "Apache Server" and "Apache Group" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the Apache Group
+ *    for use in the Apache HTTP server project (http://www.apache.org/)."
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE APACHE GROUP OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Group and was originally based
+ * on public domain software written at the National Center for
+ * Supercomputing Applications, University of Illinois, Urbana-Champaign.
+ * For more information on the Apache Group and the Apache HTTP server
+ * project, please see <http://www.apache.org/>.
+ *
+ */
+
+#include "support/Base64.h"
+
+namespace wpi {
+
+// aaaack but it's fast and const should make it shared text page.
+static const unsigned char pr2six[256] =
+{
+    // ASCII table
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
+    52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64, 64, 64, 64,
+    64,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
+    15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 64,
+    64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+    41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
+    64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
+};
+
+std::size_t Base64Decode(llvm::StringRef encoded, std::string* plain) {
+  const unsigned char *end = encoded.bytes_begin();
+  while (pr2six[*end] <= 63 && end != encoded.bytes_end()) ++end;
+  std::size_t nprbytes = end - encoded.bytes_begin();
+
+  plain->clear();
+  if (nprbytes == 0)
+    return 0;
+  plain->reserve(((nprbytes + 3) / 4) * 3);
+
+  const unsigned char *cur = encoded.bytes_begin();
+
+  while (nprbytes > 4) {
+    (*plain) += (pr2six[cur[0]] << 2 | pr2six[cur[1]] >> 4);
+    (*plain) += (pr2six[cur[1]] << 4 | pr2six[cur[2]] >> 2);
+    (*plain) += (pr2six[cur[2]] << 6 | pr2six[cur[3]]);
+    cur += 4;
+    nprbytes -= 4;
+  }
+
+  // Note: (nprbytes == 1) would be an error, so just ignore that case
+  if (nprbytes > 1) (*plain) += (pr2six[cur[0]] << 2 | pr2six[cur[1]] >> 4);
+  if (nprbytes > 2) (*plain) += (pr2six[cur[1]] << 4 | pr2six[cur[2]] >> 2);
+  if (nprbytes > 3) (*plain) += (pr2six[cur[2]] << 6 | pr2six[cur[3]]);
+
+  return (end - encoded.bytes_begin()) + ((4 - nprbytes) & 3);
+}
+
+static const char basis_64[] =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+void Base64Encode(llvm::StringRef plain, std::string* encoded) {
+  encoded->clear();
+  if (plain.empty())
+    return;
+  std::size_t len = plain.size();
+  encoded->reserve(((len + 2) / 3 * 4) + 1);
+
+  std::size_t i;
+  for (i = 0; (i + 2) < len; i += 3) {
+    (*encoded) += basis_64[(plain[i] >> 2) & 0x3F];
+    (*encoded) +=
+        basis_64[((plain[i] & 0x3) << 4) | ((int)(plain[i + 1] & 0xF0) >> 4)];
+    (*encoded) += basis_64[((plain[i + 1] & 0xF) << 2) |
+                           ((int)(plain[i + 2] & 0xC0) >> 6)];
+    (*encoded) += basis_64[plain[i + 2] & 0x3F];
+  }
+  if (i < len) {
+    (*encoded) += basis_64[(plain[i] >> 2) & 0x3F];
+    if (i == (len - 1)) {
+      (*encoded) += basis_64[((plain[i] & 0x3) << 4)];
+      (*encoded) += '=';
+    } else {
+      (*encoded) +=
+          basis_64[((plain[i] & 0x3) << 4) | ((int)(plain[i + 1] & 0xF0) >> 4)];
+      (*encoded) += basis_64[((plain[i + 1] & 0xF) << 2)];
+    }
+    (*encoded) += '=';
+  }
+}
+
+}  // namespace wpi

src/main/native/cpp/support/leb128.cpp

@@ -0,0 +1,120 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2015. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "support/leb128.h"
+
+#include "support/raw_istream.h"
+
+namespace wpi {
+
+/**
+ * Get size of unsigned LEB128 data
+ * @val: value
+ *
+ * Determine the number of bytes required to encode an unsigned LEB128 datum.
+ * The algorithm is taken from Appendix C of the DWARF 3 spec. For information
+ * on the encodings refer to section "7.6 - Variable Length Data". Return
+ * the number of bytes required.
+ */
+std::size_t SizeUleb128(unsigned long val) {
+  std::size_t count = 0;
+  do {
+    val >>= 7;
+    ++count;
+  } while (val != 0);
+  return count;
+}
+
+/**
+ * Write unsigned LEB128 data
+ * @addr: the address where the ULEB128 data is to be stored
+ * @val: value to be stored
+ *
+ * Encode an unsigned LEB128 encoded datum. The algorithm is taken
+ * from Appendix C of the DWARF 3 spec. For information on the
+ * encodings refer to section "7.6 - Variable Length Data". Return
+ * the number of bytes written.
+ */
+std::size_t WriteUleb128(llvm::SmallVectorImpl<char>& dest, unsigned long val) {
+  std::size_t count = 0;
+
+  do {
+    unsigned char byte = val & 0x7f;
+    val >>= 7;
+
+    if (val != 0)
+      byte |= 0x80;  // mark this byte to show that more bytes will follow
+
+    dest.push_back(byte);
+    count++;
+  } while (val != 0);
+
+  return count;
+}
+
+/**
+ * Read unsigned LEB128 data
+ * @addr: the address where the ULEB128 data is stored
+ * @ret: address to store the result
+ *
+ * Decode an unsigned LEB128 encoded datum. The algorithm is taken
+ * from Appendix C of the DWARF 3 spec. For information on the
+ * encodings refer to section "7.6 - Variable Length Data". Return
+ * the number of bytes read.
+ */
+std::size_t ReadUleb128(const char* addr, unsigned long* ret) {
+  unsigned long result = 0;
+  int shift = 0;
+  std::size_t count = 0;
+
+  while (1) {
+    unsigned char byte = *reinterpret_cast<const unsigned char*>(addr);
+    addr++;
+    count++;
+
+    result |= (byte & 0x7f) << shift;
+    shift += 7;
+
+    if (!(byte & 0x80)) break;
+  }
+
+  *ret = result;
+
+  return count;
+}
+
+/**
+ * Read unsigned LEB128 data from a stream
+ * @is: the input stream where the ULEB128 data is to be read from
+ * @ret: address to store the result
+ *
+ * Decode an unsigned LEB128 encoded datum. The algorithm is taken
+ * from Appendix C of the DWARF 3 spec. For information on the
+ * encodings refer to section "7.6 - Variable Length Data". Return
+ * false on stream error, true on success.
+ */
+bool ReadUleb128(raw_istream& is, unsigned long* ret) {
+  unsigned long result = 0;
+  int shift = 0;
+
+  while (1) {
+    unsigned char byte;
+    is.read((char*)&byte, 1);
+    if (is.has_error()) return false;
+
+    result |= (byte & 0x7f) << shift;
+    shift += 7;
+
+    if (!(byte & 0x80)) break;
+  }
+
+  *ret = result;
+
+  return true;
+}
+
+}  // namespace wpi

src/main/native/cpp/support/raw_istream.cpp

@@ -0,0 +1,79 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2015. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "support/raw_istream.h"
+
+#include <cstdlib>
+#include <cstring>
+
+#ifdef _WIN32
+#include <io.h>
+#else
+#include <unistd.h>
+#endif
+
+using namespace wpi;
+
+void raw_mem_istream::close() {}
+
+std::size_t raw_mem_istream::in_avail() const { return m_left; }
+
+void raw_mem_istream::read_impl(void* data, std::size_t len) {
+  if (len > m_left) {
+    error_detected();
+    return;
+  }
+  std::memcpy(data, m_cur, len);
+  m_cur += len;
+  m_left -= len;
+}
+
+raw_fd_istream::raw_fd_istream(int fd, bool shouldClose, std::size_t bufSize)
+    : m_bufSize(bufSize), m_fd(fd), m_shouldClose(shouldClose) {
+  m_cur = m_end = m_buf = static_cast<char*>(std::malloc(bufSize));
+}
+
+raw_fd_istream::~raw_fd_istream() {
+  if (m_shouldClose) close();
+  std::free(m_buf);
+}
+
+void raw_fd_istream::close() {
+  if (m_fd >= 0) {
+    ::close(m_fd);
+    m_fd = -1;
+  }
+}
+
+std::size_t raw_fd_istream::in_avail() const { return m_end - m_cur; }
+
+void raw_fd_istream::read_impl(void* data, std::size_t len) {
+  std::size_t left = m_end - m_cur;
+  if (left < len) {
+    // not enough data
+    if (m_cur == m_end) {
+#ifdef _WIN32
+      int count = ::_read(m_fd, m_buf, m_bufSize);
+#else
+      ssize_t count = ::read(m_fd, m_buf, m_bufSize);
+#endif
+      if (count < 0) {
+        error_detected();
+        return;
+      }
+      m_cur = m_buf;
+      m_end = m_buf + count;
+      return read_impl(data, len);
+    }
+
+    std::memcpy(data, m_cur, left);
+    return read_impl(static_cast<char*>(data) + left, len - left);
+  }
+
+  std::memcpy(data, m_cur, len);
+  m_cur += len;
+}

src/main/native/cpp/support/raw_socket_istream.cpp

@@ -0,0 +1,31 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2015. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "support/raw_socket_istream.h"
+#include "tcpsockets/NetworkStream.h"
+
+using namespace wpi;
+
+void raw_socket_istream::read_impl(void* data, std::size_t len) {
+  char* cdata = static_cast<char*>(data);
+  std::size_t pos = 0;
+
+  while (pos < len) {
+    NetworkStream::Error err;
+    std::size_t count =
+        m_stream.receive(&cdata[pos], len - pos, &err, m_timeout);
+    if (count == 0) {
+      error_detected();
+      return;
+    }
+    pos += count;
+  }
+}
+
+void raw_socket_istream::close() { m_stream.close(); }
+
+std::size_t raw_socket_istream::in_avail() const { return 0; }

src/main/native/cpp/support/raw_socket_ostream.cpp

@@ -0,0 +1,39 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2015. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "support/raw_socket_ostream.h"
+#include "tcpsockets/NetworkStream.h"
+
+using namespace wpi;
+
+raw_socket_ostream::~raw_socket_ostream() {
+  flush();
+  if (m_shouldClose) close();
+}
+
+void raw_socket_ostream::write_impl(const char* data, std::size_t len) {
+  std::size_t pos = 0;
+
+  while (pos < len) {
+    NetworkStream::Error err;
+    std::size_t count =
+        m_stream.send(&data[pos], len - pos, &err);
+    if (count == 0) {
+      error_detected();
+      return;
+    }
+    pos += count;
+  }
+}
+
+uint64_t raw_socket_ostream::current_pos() const { return 0; }
+
+void raw_socket_ostream::close() {
+  if (!m_shouldClose) return;
+  flush();
+  m_stream.close();
+}

src/main/native/cpp/support/timestamp.cpp

@@ -0,0 +1,89 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2015. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+#include "support/timestamp.h"
+
+#ifdef _WIN32
+#include <cassert>
+#include <exception>
+#include <windows.h>
+#else
+#include <chrono>
+#endif
+
+// offset in microseconds
+static unsigned long long zerotime() {
+#ifdef _WIN32
+  FILETIME ft;
+  unsigned long long tmpres = 0;
+  // 100-nanosecond intervals since January 1, 1601 (UTC)
+  // which means 0.1 us
+  GetSystemTimeAsFileTime(&ft);
+  tmpres |= ft.dwHighDateTime;
+  tmpres <<= 32;
+  tmpres |= ft.dwLowDateTime;
+  // January 1st, 1970 - January 1st, 1601 UTC ~ 369 years
+  // or 116444736000000000 us
+  static const unsigned long long deltaepoch = 116444736000000000ull;
+  tmpres -= deltaepoch;
+  return tmpres;
+#else
+  // 100-ns intervals
+  using namespace std::chrono;
+  return duration_cast<nanoseconds>(
+    high_resolution_clock::now().time_since_epoch()).count() / 100u;
+#endif
+}
+
+static unsigned long long timestamp() {
+#ifdef _WIN32
+  LARGE_INTEGER li;
+  QueryPerformanceCounter(&li);
+  // there is an imprecision with the initial value,
+  // but what matters is that timestamps are monotonic and consistent
+  return static_cast<unsigned long long>(li.QuadPart);
+#else
+  // 100-ns intervals
+  using namespace std::chrono;
+  return duration_cast<nanoseconds>(
+    steady_clock::now().time_since_epoch()).count() / 100u;
+#endif
+}
+
+#ifdef _WIN32
+static unsigned long long update_frequency() {
+  LARGE_INTEGER li;
+  if (!QueryPerformanceFrequency(&li) || !li.QuadPart) {
+    // log something
+    std::terminate();
+  }
+  return static_cast<unsigned long long>(li.QuadPart);
+}
+#endif
+
+static const unsigned long long zerotime_val = zerotime();
+static const unsigned long long offset_val = timestamp();
+#ifdef _WIN32
+static const unsigned long long frequency_val = update_frequency();
+#endif
+
+unsigned long long wpi::Now() {
+#ifdef _WIN32
+  assert(offset_val > 0u);
+  assert(frequency_val > 0u);
+  unsigned long long delta = timestamp() - offset_val;
+  // because the frequency is in update per seconds, we have to multiply the
+  // delta by 10,000,000
+  unsigned long long delta_in_us = delta * 10000000ull / frequency_val;
+  return delta_in_us + zerotime_val;
+#else
+  return zerotime_val + timestamp() - offset_val;
+#endif
+}
+
+unsigned long long WPI_Now() {
+  return wpi::Now();
+}

src/main/native/cpp/tcpsockets/SocketError.cpp

@@ -0,0 +1,31 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2015. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "tcpsockets/SocketError.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <string.h>
+#endif
+
+namespace wpi {
+
+std::string SocketStrerror(int code) {
+#ifdef _WIN32
+  LPSTR errstr = nullptr;
+  FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
+                0, code, 0, (LPSTR)&errstr, 0, 0);
+  std::string rv(errstr);
+  LocalFree(errstr);
+  return rv;
+#else
+  return strerror(code);
+#endif
+}
+
+}  // namespace wpi

src/main/native/cpp/tcpsockets/TCPAcceptor.cpp

@@ -0,0 +1,196 @@
+/*
+   TCPAcceptor.cpp
+
+   TCPAcceptor class definition. TCPAcceptor provides methods to passively
+   establish TCP/IP connections with clients.
+
+   ------------------------------------------
+
+   Copyright © 2013 [Vic Hargrave - http://vichargrave.com]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+#include "tcpsockets/TCPAcceptor.h"
+
+#include <cstdio>
+#include <cstring>
+#ifdef _WIN32
+#include <WinSock2.h>
+#include <Ws2tcpip.h>
+#pragma comment(lib, "Ws2_32.lib")
+#else
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <unistd.h>
+#include <fcntl.h>
+#endif
+
+#include "llvm/SmallString.h"
+#include "support/Logger.h"
+#include "tcpsockets/SocketError.h"
+
+using namespace wpi;
+
+TCPAcceptor::TCPAcceptor(int port, const char* address, Logger& logger)
+    : m_lsd(0),
+      m_port(port),
+      m_address(address),
+      m_listening(false),
+      m_logger(logger) {
+  m_shutdown = false;
+#ifdef _WIN32
+  WSAData wsaData;
+  WORD wVersionRequested = MAKEWORD(2, 2);
+  WSAStartup(wVersionRequested, &wsaData);
+#endif
+}
+
+TCPAcceptor::~TCPAcceptor() {
+  if (m_lsd > 0) {
+    shutdown();
+#ifdef _WIN32
+    closesocket(m_lsd);
+#else
+    close(m_lsd);
+#endif
+  }
+#ifdef _WIN32
+  WSACleanup();
+#endif
+}
+
+int TCPAcceptor::start() {
+  if (m_listening) return 0;
+
+  m_lsd = socket(PF_INET, SOCK_STREAM, 0);
+  if (m_lsd < 0) {
+    WPI_ERROR(m_logger, "could not create socket");
+    return -1;
+  }
+  struct sockaddr_in address;
+
+  std::memset(&address, 0, sizeof(address));
+  address.sin_family = PF_INET;
+  if (m_address.size() > 0) {
+#ifdef _WIN32
+    llvm::SmallString<128> addr_copy(m_address);
+    addr_copy.push_back('\0');
+    int res = InetPton(PF_INET, addr_copy.data(), &(address.sin_addr));
+#else
+    int res = inet_pton(PF_INET, m_address.c_str(), &(address.sin_addr));
+#endif
+    if (res != 1) {
+      WPI_ERROR(m_logger, "could not resolve " << m_address << " address");
+      return -1;
+    }
+  } else {
+    address.sin_addr.s_addr = INADDR_ANY;
+  }
+  address.sin_port = htons(m_port);
+
+  int optval = 1;
+  setsockopt(m_lsd, SOL_SOCKET, SO_REUSEADDR, (char*)&optval, sizeof optval);
+
+  int result = bind(m_lsd, (struct sockaddr*)&address, sizeof(address));
+  if (result != 0) {
+    WPI_ERROR(m_logger, "bind() to port " << m_port
+                                          << " failed: " << SocketStrerror());
+    return result;
+  }
+
+  result = listen(m_lsd, 5);
+  if (result != 0) {
+    WPI_ERROR(m_logger, "listen() on port " << m_port
+                                            << " failed: " << SocketStrerror());
+    return result;
+  }
+  m_listening = true;
+  return result;
+}
+
+void TCPAcceptor::shutdown() {
+  m_shutdown = true;
+#ifdef _WIN32
+  ::shutdown(m_lsd, SD_BOTH);
+
+  // this is ugly, but the easiest way to do this
+  // force wakeup of accept() with a non-blocking connect to ourselves
+  struct sockaddr_in address;
+
+  std::memset(&address, 0, sizeof(address));
+  address.sin_family = PF_INET;
+  llvm::SmallString<128> addr_copy;
+  if (m_address.size() > 0)
+    addr_copy = m_address;
+  else
+    addr_copy = "127.0.0.1";
+  addr_copy.push_back('\0');
+  int size = sizeof(address);
+  if (WSAStringToAddress(addr_copy.data(), PF_INET, nullptr,
+                         (struct sockaddr*)&address, &size) != 0)
+    return;
+  address.sin_port = htons(m_port);
+
+  fd_set sdset;
+  struct timeval tv;
+  int result = -1, valopt, sd = socket(AF_INET, SOCK_STREAM, 0);
+  if (sd < 0) return;
+
+  // Set socket to non-blocking
+  u_long mode = 1;
+  ioctlsocket(sd, FIONBIO, &mode);
+
+  // Try to connect
+  ::connect(sd, (struct sockaddr*)&address, sizeof(address));
+
+  // Close
+  ::closesocket(sd);
+
+#else
+  ::shutdown(m_lsd, SHUT_RDWR);
+  int nullfd = ::open("/dev/null", O_RDONLY);
+  if (nullfd >= 0) {
+    ::dup2(nullfd, m_lsd);
+    ::close(nullfd);
+  }
+#endif
+}
+
+std::unique_ptr<NetworkStream> TCPAcceptor::accept() {
+  if (!m_listening || m_shutdown) return nullptr;
+
+  struct sockaddr_in address;
+#ifdef _WIN32
+  int len = sizeof(address);
+#else
+  socklen_t len = sizeof(address);
+#endif
+  std::memset(&address, 0, sizeof(address));
+  int sd = ::accept(m_lsd, (struct sockaddr*)&address, &len);
+  if (sd < 0) {
+    if (!m_shutdown)
+      WPI_ERROR(m_logger, "accept() on port "
+                              << m_port << " failed: " << SocketStrerror());
+    return nullptr;
+  }
+  if (m_shutdown) {
+#ifdef _WIN32
+    closesocket(sd);
+#else
+    close(sd);
+#endif
+    return nullptr;
+  }
+  return std::unique_ptr<NetworkStream>(new TCPStream(sd, &address));
+}

src/main/native/cpp/tcpsockets/TCPConnector.cpp

@@ -0,0 +1,207 @@
+/*
+   TCPConnector.h
+
+   TCPConnector class definition. TCPConnector provides methods to actively
+   establish TCP/IP connections with a server.
+
+   ------------------------------------------
+
+   Copyright © 2013 [Vic Hargrave - http://vichargrave.com]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License
+*/
+
+#include "tcpsockets/TCPConnector.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <cstdio>
+#include <cstring>
+#ifdef _WIN32
+#include <WinSock2.h>
+#include <WS2tcpip.h>
+#else
+#include <netdb.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <sys/select.h>
+#include <unistd.h>
+#endif
+
+#include "tcpsockets/TCPStream.h"
+
+#include "llvm/SmallString.h"
+#include "support/Logger.h"
+#include "tcpsockets/SocketError.h"
+
+using namespace wpi;
+
+static int ResolveHostName(const char* hostname, struct in_addr* addr) {
+  struct addrinfo hints;
+  struct addrinfo* res;
+
+  hints.ai_flags = 0;
+  hints.ai_family = AF_INET;
+  hints.ai_socktype = SOCK_STREAM;
+  hints.ai_protocol = 0;
+  hints.ai_addrlen = 0;
+  hints.ai_addr = nullptr;
+  hints.ai_canonname = nullptr;
+  hints.ai_next = nullptr;
+  int result = getaddrinfo(hostname, nullptr, &hints, &res);
+  if (result == 0) {
+    std::memcpy(addr, &((struct sockaddr_in*)res->ai_addr)->sin_addr,
+                sizeof(struct in_addr));
+    freeaddrinfo(res);
+  }
+  return result;
+}
+
+std::unique_ptr<NetworkStream> TCPConnector::connect(const char* server,
+                                                     int port, Logger& logger,
+                                                     int timeout) {
+#ifdef _WIN32
+  struct WSAHelper {
+    WSAHelper() {
+      WSAData wsaData;
+      WORD wVersionRequested = MAKEWORD(2, 2);
+      WSAStartup(wVersionRequested, &wsaData);
+    }
+    ~WSAHelper() { WSACleanup(); }
+  };
+  static WSAHelper helper;
+#endif
+  struct sockaddr_in address;
+
+  std::memset(&address, 0, sizeof(address));
+  address.sin_family = AF_INET;
+  if (ResolveHostName(server, &(address.sin_addr)) != 0) {
+#ifdef _WIN32
+    llvm::SmallString<128> addr_copy(server);
+    addr_copy.push_back('\0');
+    int res = InetPton(PF_INET, addr_copy.data(), &(address.sin_addr));
+#else
+    int res = inet_pton(PF_INET, server, &(address.sin_addr));
+#endif
+    if (res != 1) {
+      WPI_ERROR(logger, "could not resolve " << server << " address");
+      return nullptr;
+    }
+  }
+  address.sin_port = htons(port);
+
+  if (timeout == 0) {
+    int sd = socket(AF_INET, SOCK_STREAM, 0);
+    if (sd < 0) {
+      WPI_ERROR(logger, "could not create socket");
+      return nullptr;
+    }
+    if (::connect(sd, (struct sockaddr*)&address, sizeof(address)) != 0) {
+      WPI_ERROR(logger, "connect() to " << server << " port " << port << " failed: " << SocketStrerror());
+#ifdef _WIN32
+      closesocket(sd);
+#else
+      ::close(sd);
+#endif
+      return nullptr;
+    }
+    return std::unique_ptr<NetworkStream>(new TCPStream(sd, &address));
+  }
+
+  fd_set sdset;
+  struct timeval tv;
+  socklen_t len;
+  int result = -1, valopt, sd = socket(AF_INET, SOCK_STREAM, 0);
+  if (sd < 0) {
+    WPI_ERROR(logger, "could not create socket");
+    return nullptr;
+  }
+
+  // Set socket to non-blocking
+#ifdef _WIN32
+  u_long mode = 1;
+  if (ioctlsocket(sd, FIONBIO, &mode) == SOCKET_ERROR)
+    WPI_WARNING(logger,
+                "could not set socket to non-blocking: " << SocketStrerror());
+#else
+  long arg;
+  arg = fcntl(sd, F_GETFL, nullptr);
+  if (arg < 0) {
+    WPI_WARNING(logger,
+                "could not set socket to non-blocking: " << SocketStrerror());
+  } else {
+    arg |= O_NONBLOCK;
+    if (fcntl(sd, F_SETFL, arg) < 0)
+      WPI_WARNING(logger,
+                  "could not set socket to non-blocking: " << SocketStrerror());
+  }
+#endif
+
+  // Connect with time limit
+  if ((result = ::connect(sd, (struct sockaddr*)&address, sizeof(address))) <
+      0) {
+    int my_errno = SocketErrno();
+#ifdef _WIN32
+    if (my_errno == WSAEWOULDBLOCK || my_errno == WSAEINPROGRESS) {
+#else
+    if (my_errno == EWOULDBLOCK || my_errno == EINPROGRESS) {
+#endif
+      tv.tv_sec = timeout;
+      tv.tv_usec = 0;
+      FD_ZERO(&sdset);
+      FD_SET(sd, &sdset);
+      if (select(sd + 1, nullptr, &sdset, nullptr, &tv) > 0) {
+        len = sizeof(int);
+        getsockopt(sd, SOL_SOCKET, SO_ERROR, (char*)(&valopt), &len);
+        if (valopt) {
+          WPI_ERROR(logger, "select() to " << server << " port " << port << " error " << valopt << " - " << SocketStrerror(valopt));
+        }
+        // connection established
+        else
+          result = 0;
+      } else
+        WPI_INFO(logger, "connect() to " << server << " port " << port << " timed out");
+    } else
+      WPI_ERROR(logger, "connect() to " << server << " port " << port << " error " << SocketErrno() << " - " << SocketStrerror());
+  }
+
+  // Return socket to blocking mode
+#ifdef _WIN32
+  mode = 0;
+  if (ioctlsocket(sd, FIONBIO, &mode) == SOCKET_ERROR)
+    WPI_WARNING(logger,
+                "could not set socket to blocking: " << SocketStrerror());
+#else
+  arg = fcntl(sd, F_GETFL, nullptr);
+  if (arg < 0) {
+    WPI_WARNING(logger,
+                "could not set socket to blocking: " << SocketStrerror());
+  } else {
+    arg &= (~O_NONBLOCK);
+    if (fcntl(sd, F_SETFL, arg) < 0)
+      WPI_WARNING(logger,
+                  "could not set socket to blocking: " << SocketStrerror());
+  }
+#endif
+
+  // Create stream object if connected, close if not.
+  if (result == -1) {
+#ifdef _WIN32
+      closesocket(sd);
+#else
+      ::close(sd);
+#endif
+    return nullptr;
+  }
+  return std::unique_ptr<NetworkStream>(new TCPStream(sd, &address));
+}

src/main/native/cpp/tcpsockets/TCPStream.cpp

@@ -0,0 +1,207 @@
+/*
+   TCPStream.h
+
+   TCPStream class definition. TCPStream provides methods to trasnfer
+   data between peers over a TCP/IP connection.
+
+   ------------------------------------------
+
+   Copyright © 2013 [Vic Hargrave - http://vichargrave.com]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+#include "tcpsockets/TCPStream.h"
+
+#include <fcntl.h>
+#ifdef _WIN32
+#include <WinSock2.h>
+#include <Ws2tcpip.h>
+#else
+#include <arpa/inet.h>
+#include <netinet/tcp.h>
+#include <unistd.h>
+#endif
+
+using namespace wpi;
+
+TCPStream::TCPStream(int sd, sockaddr_in* address)
+    : m_sd(sd), m_blocking(true) {
+  char ip[50];
+#ifdef _WIN32
+  InetNtop(PF_INET, &(address->sin_addr.s_addr), ip, sizeof(ip) - 1);
+#else
+  inet_ntop(PF_INET, (in_addr*)&(address->sin_addr.s_addr), ip,
+            sizeof(ip) - 1);
+#ifdef SO_NOSIGPIPE
+  // disable SIGPIPE on Mac OS X
+  int set = 1;
+  setsockopt(m_sd, SOL_SOCKET, SO_NOSIGPIPE, (char*)&set, sizeof set);
+#endif
+#endif
+  m_peerIP = ip;
+  m_peerPort = ntohs(address->sin_port);
+}
+
+TCPStream::~TCPStream() { close(); }
+
+std::size_t TCPStream::send(const char* buffer, std::size_t len, Error* err) {
+  if (m_sd < 0) {
+    *err = kConnectionClosed;
+    return 0;
+  }
+#ifdef _WIN32
+  WSABUF wsaBuf;
+  wsaBuf.buf = const_cast<char*>(buffer);
+  wsaBuf.len = (ULONG)len;
+  DWORD rv;
+  bool result = true;
+  while (WSASend(m_sd, &wsaBuf, 1, &rv, 0, nullptr, nullptr) == SOCKET_ERROR) {
+    if (WSAGetLastError() != WSAEWOULDBLOCK) {
+      result = false;
+      break;
+    }
+    if (!m_blocking) {
+      *err = kWouldBlock;
+      return 0;
+    }
+    Sleep(1);
+  }
+  if (!result) {
+    char Buffer[128];
+#ifdef _MSC_VER
+    sprintf_s(Buffer, "Send() failed: WSA error=%d\n", WSAGetLastError());
+#else
+    std::snprintf(Buffer, 128, "Send() failed: WSA error=%d\n", WSAGetLastError());
+#endif
+    OutputDebugStringA(Buffer);
+    *err = kConnectionReset;
+    return 0;
+  }
+#else
+#ifdef MSG_NOSIGNAL
+  // disable SIGPIPE on Linux
+  ssize_t rv = ::send(m_sd, buffer, len, MSG_NOSIGNAL);
+#else
+  ssize_t rv = ::send(m_sd, buffer, len, 0);
+#endif
+  if (rv < 0) {
+    if (!m_blocking && (errno == EAGAIN || errno == EWOULDBLOCK))
+      *err = kWouldBlock;
+    else
+      *err = kConnectionReset;
+    return 0;
+  }
+#endif
+  return static_cast<std::size_t>(rv);
+}
+
+std::size_t TCPStream::receive(char* buffer, std::size_t len, Error* err,
+                               int timeout) {
+  if (m_sd < 0) {
+    *err = kConnectionClosed;
+    return 0;
+  }
+#ifdef _WIN32
+  int rv;
+#else
+  ssize_t rv;
+#endif
+  if (timeout <= 0) {
+#ifdef _WIN32
+    rv = recv(m_sd, buffer, len, 0);
+#else
+    rv = read(m_sd, buffer, len);
+#endif
+  }
+  else if (WaitForReadEvent(timeout)) {
+#ifdef _WIN32
+    rv = recv(m_sd, buffer, len, 0);
+#else
+    rv = read(m_sd, buffer, len);
+#endif
+  } else {
+    *err = kConnectionTimedOut;
+    return 0;
+  }
+  if (rv < 0) {
+#ifdef _WIN32
+    if (!m_blocking && WSAGetLastError() == WSAEWOULDBLOCK)
+#else
+    if (!m_blocking && (errno == EAGAIN || errno == EWOULDBLOCK))
+#endif
+      *err = kWouldBlock;
+    else
+      *err = kConnectionReset;
+    return 0;
+  }
+  return static_cast<std::size_t>(rv);
+}
+
+void TCPStream::close() {
+  if (m_sd >= 0) {
+#ifdef _WIN32
+    ::shutdown(m_sd, SD_BOTH);
+    closesocket(m_sd);
+#else
+    ::shutdown(m_sd, SHUT_RDWR);
+    ::close(m_sd);
+#endif
+  }
+  m_sd = -1;
+}
+
+llvm::StringRef TCPStream::getPeerIP() const { return m_peerIP; }
+
+int TCPStream::getPeerPort() const { return m_peerPort; }
+
+void TCPStream::setNoDelay() {
+  if (m_sd < 0) return;
+  int optval = 1;
+  setsockopt(m_sd, IPPROTO_TCP, TCP_NODELAY, (char*)&optval, sizeof optval);
+}
+
+bool TCPStream::setBlocking(bool enabled) {
+  if (m_sd < 0) return true;  // silently accept
+#ifdef _WIN32
+  u_long mode = enabled ? 0 : 1;
+  if (ioctlsocket(m_sd, FIONBIO, &mode) == SOCKET_ERROR) return false;
+#else
+  long flags = fcntl(m_sd, F_GETFL, nullptr);
+  if (flags < 0) return false;
+  if (enabled)
+    flags &= ~O_NONBLOCK;
+  else
+    flags |= O_NONBLOCK;
+  if (fcntl(m_sd, F_SETFL, flags) < 0) return false;
+#endif
+  return true;
+}
+
+int TCPStream::getNativeHandle() const {
+  return m_sd;
+}
+
+bool TCPStream::WaitForReadEvent(int timeout) {
+  fd_set sdset;
+  struct timeval tv;
+
+  tv.tv_sec = timeout;
+  tv.tv_usec = 0;
+  FD_ZERO(&sdset);
+  FD_SET(m_sd, &sdset);
+  if (select(m_sd + 1, &sdset, NULL, NULL, &tv) > 0) {
+    return true;
+  }
+  return false;
+}