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Add default parameter to StringRef to allow null termination on lengthed strings. (#27)

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This commit is contained in:
Thad House
2017-08-23 19:02:11 -07:00
committed by Peter Johnson
parent 1a0ed61f78
commit 8416b4e42c
1 changed files with 6 additions and 5 deletions
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11
src/main/native/include/llvm/StringRef.h
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@@ -90,14 +90,15 @@ namespace llvm {
}
/// Construct a string ref from a pointer and length.
/*implicit*/ StringRef(const char *data, size_t length)
/*implicit*/ StringRef(const char *data, size_t length, bool isNullTerminated = false)
: Data(data), Length(length) {
assert((data || length == 0) &&
"StringRef cannot be built from a NULL argument with non-null length");
// Require length to not use MSB of size
assert(Length < ~((size_t)1 << (sizeof(size_t) * 8 - 1)));
// If passed an explicit length, we are not null terminated
set_null_terminated(false);
// If passed an explicit length, use the parameter
// Default to false (not null) to match previous behavior.
set_null_terminated(isNullTerminated);
}
/// Construct a string ref from an std::string.
@@ -143,8 +144,8 @@ namespace llvm {
bool empty() const { return size() == 0; }
/// size - Get the string size.
size_t size() const {
return Length & ~((size_t)1 << (sizeof(size_t) * 8 - 1));
size_t size() const {
return Length & ~((size_t)1 << (sizeof(size_t) * 8 - 1));
}
/// is_null_terminated - Get if the string is guaranteed null terminated