mirror of
https://github.com/wpilibsuite/allwpilib
synced 2026-06-19 00:41:43 +00:00
430722c4a3
Only very basic testing performed to date. The wrappers are still a bit incomplete (some structures and functions), but are much more complete than the old ones. Fixes artf3796. Changes from initial changeset: - Use // for comments. - Add auto-generate notices to the beginning of each generated file. - Include error number with error text in exception. - Add free() function to structures. - Fix out-of-order / non-array enums. - Avoid duplicate calls to DisposedStruct.write() as .getAddress() does it. - Refactor OpaqueStruct. - Default to no null allowed except when overridden. - Implement unowned return values. - Add gen_struct_sizer script. Change-Id: Ie0d102c45817ea8812d98fe4938d1a2255c61664
114 lines
3.0 KiB
Python
114 lines
3.0 KiB
Python
from __future__ import print_function
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import sys
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import os
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import re
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try:
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import configparser
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except ImportError:
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import ConfigParser as configparser
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from nivision_parse import *
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class StructSizerEmitter:
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def __init__(self, out, config):
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self.out = out
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self.config = config
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print("""#include <stdio.h>
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#include <nivision.h>
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int main()
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{
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printf("[_platform_]\\npointer=%d\\n", (int)sizeof(void*));
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""", file=self.out)
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def finish(self):
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print("}", file=self.out)
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def config_get(self, section, option, fallback):
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try:
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return self.config.get(section, option)
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except (ValueError, configparser.NoSectionError, configparser.NoOptionError):
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return fallback
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def config_getboolean(self, section, option, fallback):
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try:
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return self.config.getboolean(section, option)
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except (ValueError, configparser.NoSectionError, configparser.NoOptionError):
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return fallback
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def block_comment(self, comment):
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pass
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def opaque_struct(self, name):
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pass
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def define(self, name, value, comment):
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pass
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def text(self, text):
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print(text, file=self.out)
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def static_const(self, name, ctype, value):
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pass
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def enum(self, name, values):
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pass
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def typedef(self, name, typedef, arr):
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pass
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def typedef_function(self, name, restype, params):
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pass
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def function(self, name, restype, params):
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pass
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def structunion(self, ctype, name, fields):
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if name in opaque_structs:
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return
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print('printf("[{name}]\\n_SIZE_=%d\\n", (int)sizeof({name}));'.format(name=name), file=self.out)
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for fname, ftype, arr, comment in fields:
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if ':' in fname:
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continue # can't handle bitfields
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print('printf("{field}=%d\\n", (int)offsetof({name}, {field}));'.format(name=name, field=fname), file=self.out)
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def struct(self, name, fields):
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self.structunion("Structure", name, fields)
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def union(self, name, fields):
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self.structunion("Union", name, fields)
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def generate(srcdir, configpath=None, nivisionhpath=None):
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# read config file
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config = configparser.ConfigParser()
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config.read(configpath)
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block_comment_exclude = set(x.strip() for x in
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config.get("Block Comment", "exclude").splitlines())
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# open input file
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inf = open(nivisionhpath)
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# prescan for undefined structures
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prescan_file(inf)
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inf.seek(0)
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# generate
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with open("struct_sizer.c", "wt") as out:
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emit = StructSizerEmitter(out, config)
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parse_file(emit, inf, block_comment_exclude)
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emit.finish()
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if __name__ == "__main__":
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if len(sys.argv) < 2:
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print("Usage: gen_struct_sizer.py <nivision.h> [config.ini]")
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exit(0)
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fname = sys.argv[1]
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configname = "nivision_2011.ini"
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if len(sys.argv) >= 3:
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configname = sys.argv[2]
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generate("", configname, fname)
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