forked from mirrors/gecko-dev
94 lines
3 KiB
Python
94 lines
3 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
|
|
# License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
import re
|
|
import string
|
|
import textwrap
|
|
|
|
comment_re = re.compile(r"//[^\n]*\n|/\*.*\*/", re.S)
|
|
decl_re = re.compile(
|
|
r"""^(.+)\s+ # type
|
|
(\w+)\s* # name
|
|
(?:\((.*)\))?$ # optional param tys
|
|
""",
|
|
re.X | re.S,
|
|
)
|
|
|
|
|
|
def read_decls(filename):
|
|
"""Parse & yield C-style decls from an input file"""
|
|
with open(filename, "r") as fd:
|
|
# Strip comments from the source text.
|
|
text = comment_re.sub("", fd.read())
|
|
|
|
# Parse individual declarations.
|
|
raw_decls = [d.strip() for d in text.split(";") if d.strip()]
|
|
for raw in raw_decls:
|
|
match = decl_re.match(raw)
|
|
if match is None:
|
|
raise "Invalid decl: %s" % raw
|
|
|
|
ty, name, params = match.groups()
|
|
if params is not None:
|
|
params = [a.strip() for a in params.split(",") if a.strip()]
|
|
yield ty, name, params
|
|
|
|
|
|
def generate(fd, consts_path, unicodes_path, template_path, compiler):
|
|
# Parse the template
|
|
with open(template_path, "r") as template_fd:
|
|
template = string.Template(template_fd.read())
|
|
|
|
decls = ""
|
|
|
|
# Each constant should be saved to a temporary, and then re-assigned to a
|
|
# constant with the correct name, allowing the value to be determined by
|
|
# the actual definition.
|
|
for ty, name, args in read_decls(consts_path):
|
|
assert args is None, "parameters in const decl!"
|
|
|
|
decls += textwrap.dedent(
|
|
"""
|
|
#ifdef {name}
|
|
constexpr {ty} _tmp_{name} = {name};
|
|
#undef {name}
|
|
constexpr {ty} {name} = _tmp_{name};
|
|
#endif
|
|
""".format(
|
|
ty=ty, name=name
|
|
)
|
|
)
|
|
|
|
# Each unicode declaration defines a static inline function with the
|
|
# correct types which calls the 'A' or 'W'-suffixed versions of the
|
|
# function. Full types are required here to ensure that '0' to 'nullptr'
|
|
# coersions are preserved.
|
|
for ty, name, args in read_decls(unicodes_path):
|
|
assert args is not None, "argument list required for unicode decl"
|
|
|
|
# Parameter & argument string list
|
|
params = ", ".join("%s a%d" % (ty, i) for i, ty in enumerate(args))
|
|
args = ", ".join("a%d" % i for i in range(len(args)))
|
|
|
|
decls += textwrap.dedent(
|
|
"""
|
|
#ifdef {name}
|
|
#undef {name}
|
|
static inline {ty} WINAPI
|
|
{name}({params})
|
|
#ifdef UNICODE
|
|
{{
|
|
return {name}W({args});
|
|
}}
|
|
#else
|
|
= delete;
|
|
#endif
|
|
#endif
|
|
""".format(
|
|
ty=ty, name=name, params=params, args=args
|
|
)
|
|
)
|
|
|
|
# Write out the resulting file
|
|
fd.write(template.substitute(decls=decls))
|