132 lines
4.5 KiB
Python
132 lines
4.5 KiB
Python
"""SCons.Tool.yacc
|
|
|
|
Tool-specific initialization for yacc.
|
|
|
|
There normally shouldn't be any need to import this module directly.
|
|
It will usually be imported through the generic SCons.Tool.Tool()
|
|
selection method.
|
|
|
|
"""
|
|
|
|
#
|
|
# Copyright (c) 2001 - 2016 The SCons Foundation
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining
|
|
# a copy of this software and associated documentation files (the
|
|
# "Software"), to deal in the Software without restriction, including
|
|
# without limitation the rights to use, copy, modify, merge, publish,
|
|
# distribute, sublicense, and/or sell copies of the Software, and to
|
|
# permit persons to whom the Software is furnished to do so, subject to
|
|
# the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included
|
|
# in all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
|
|
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
|
|
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
#
|
|
|
|
__revision__ = "src/engine/SCons/Tool/yacc.py rel_2.5.1:3735:9dc6cee5c168 2016/11/03 14:02:02 bdbaddog"
|
|
|
|
import os.path
|
|
|
|
import SCons.Defaults
|
|
import SCons.Tool
|
|
import SCons.Util
|
|
|
|
YaccAction = SCons.Action.Action("$YACCCOM", "$YACCCOMSTR")
|
|
|
|
def _yaccEmitter(target, source, env, ysuf, hsuf):
|
|
yaccflags = env.subst("$YACCFLAGS", target=target, source=source)
|
|
flags = SCons.Util.CLVar(yaccflags)
|
|
targetBase, targetExt = os.path.splitext(SCons.Util.to_String(target[0]))
|
|
|
|
if '.ym' in ysuf: # If using Objective-C
|
|
target = [targetBase + ".m"] # the extension is ".m".
|
|
|
|
|
|
# If -d is specified on the command line, yacc will emit a .h
|
|
# or .hpp file with the same name as the .c or .cpp output file.
|
|
if '-d' in flags:
|
|
target.append(targetBase + env.subst(hsuf, target=target, source=source))
|
|
|
|
# If -g is specified on the command line, yacc will emit a .vcg
|
|
# file with the same base name as the .y, .yacc, .ym or .yy file.
|
|
if "-g" in flags:
|
|
base, ext = os.path.splitext(SCons.Util.to_String(source[0]))
|
|
target.append(base + env.subst("$YACCVCGFILESUFFIX"))
|
|
|
|
# If -v is specified yacc will create the output debug file
|
|
# which is not really source for any process, but should
|
|
# be noted and also be cleaned
|
|
# Bug #2558
|
|
if "-v" in flags:
|
|
env.SideEffect(targetBase+'.output',target[0])
|
|
env.Clean(target[0],targetBase+'.output')
|
|
|
|
|
|
|
|
# With --defines and --graph, the name of the file is totally defined
|
|
# in the options.
|
|
fileGenOptions = ["--defines=", "--graph="]
|
|
for option in flags:
|
|
for fileGenOption in fileGenOptions:
|
|
l = len(fileGenOption)
|
|
if option[:l] == fileGenOption:
|
|
# A file generating option is present, so add the file
|
|
# name to the list of targets.
|
|
fileName = option[l:].strip()
|
|
target.append(fileName)
|
|
|
|
return (target, source)
|
|
|
|
def yEmitter(target, source, env):
|
|
return _yaccEmitter(target, source, env, ['.y', '.yacc'], '$YACCHFILESUFFIX')
|
|
|
|
def ymEmitter(target, source, env):
|
|
return _yaccEmitter(target, source, env, ['.ym'], '$YACCHFILESUFFIX')
|
|
|
|
def yyEmitter(target, source, env):
|
|
return _yaccEmitter(target, source, env, ['.yy'], '$YACCHXXFILESUFFIX')
|
|
|
|
def generate(env):
|
|
"""Add Builders and construction variables for yacc to an Environment."""
|
|
c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
|
|
|
|
# C
|
|
c_file.add_action('.y', YaccAction)
|
|
c_file.add_emitter('.y', yEmitter)
|
|
|
|
c_file.add_action('.yacc', YaccAction)
|
|
c_file.add_emitter('.yacc', yEmitter)
|
|
|
|
# Objective-C
|
|
c_file.add_action('.ym', YaccAction)
|
|
c_file.add_emitter('.ym', ymEmitter)
|
|
|
|
# C++
|
|
cxx_file.add_action('.yy', YaccAction)
|
|
cxx_file.add_emitter('.yy', yyEmitter)
|
|
|
|
env['YACC'] = env.Detect('bison') or 'yacc'
|
|
env['YACCFLAGS'] = SCons.Util.CLVar('')
|
|
env['YACCCOM'] = '$YACC $YACCFLAGS -o $TARGET $SOURCES'
|
|
env['YACCHFILESUFFIX'] = '.h'
|
|
|
|
env['YACCHXXFILESUFFIX'] = '.hpp'
|
|
|
|
env['YACCVCGFILESUFFIX'] = '.vcg'
|
|
|
|
def exists(env):
|
|
return env.Detect(['bison', 'yacc'])
|
|
|
|
# Local Variables:
|
|
# tab-width:4
|
|
# indent-tabs-mode:nil
|
|
# End:
|
|
# vim: set expandtab tabstop=4 shiftwidth=4:
|