mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-12-21 03:16:54 +01:00
142 lines
4.7 KiB
Python
142 lines
4.7 KiB
Python
# MIT License
|
|
#
|
|
# Copyright 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.
|
|
|
|
"""Tool-specific initialization for lex.
|
|
|
|
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.
|
|
"""
|
|
|
|
import os.path
|
|
import sys
|
|
|
|
import SCons.Action
|
|
import SCons.Tool
|
|
import SCons.Util
|
|
import SCons.Warnings
|
|
from SCons.Platform.mingw import MINGW_DEFAULT_PATHS
|
|
from SCons.Platform.cygwin import CYGWIN_DEFAULT_PATHS
|
|
from SCons.Platform.win32 import CHOCO_DEFAULT_PATH
|
|
|
|
LexAction = SCons.Action.Action("$LEXCOM", "$LEXCOMSTR")
|
|
|
|
if sys.platform == 'win32':
|
|
BINS = ['flex', 'lex', 'win_flex']
|
|
else:
|
|
BINS = ["flex", "lex"]
|
|
|
|
def lexEmitter(target, source, env):
|
|
sourceBase, sourceExt = os.path.splitext(SCons.Util.to_String(source[0]))
|
|
|
|
if sourceExt == ".lm": # If using Objective-C
|
|
target = [sourceBase + ".m"] # the extension is ".m".
|
|
|
|
# This emitter essentially tries to add to the target all extra
|
|
# files generated by flex.
|
|
|
|
# Different options that are used to trigger the creation of extra files.
|
|
fileGenOptions = ["--header-file=", "--tables-file="]
|
|
|
|
lexflags = env.subst("$LEXFLAGS", target=target, source=source)
|
|
for option in SCons.Util.CLVar(lexflags):
|
|
for fileGenOption in fileGenOptions:
|
|
l = len(fileGenOption)
|
|
if option[:l] == fileGenOption:
|
|
# A file generating option is present, so add the
|
|
# file name to the target list.
|
|
fileName = option[l:].strip()
|
|
target.append(fileName)
|
|
return (target, source)
|
|
|
|
def get_lex_path(env, append_paths=False):
|
|
"""
|
|
Find the path to the lex tool, searching several possible names
|
|
|
|
Only called in the Windows case, so the default_path
|
|
can be Windows-specific
|
|
|
|
:param env: current construction environment
|
|
:param append_paths: if set, add the path to the tool to PATH
|
|
:return: path to lex tool, if found
|
|
"""
|
|
for prog in BINS:
|
|
bin_path = SCons.Tool.find_program_path(
|
|
env,
|
|
prog,
|
|
default_paths=CHOCO_DEFAULT_PATH + MINGW_DEFAULT_PATHS + CYGWIN_DEFAULT_PATHS )
|
|
if bin_path:
|
|
if append_paths:
|
|
env.AppendENVPath('PATH', os.path.dirname(bin_path))
|
|
return bin_path
|
|
|
|
SCons.Warnings.warn(
|
|
SCons.Warnings.SConsWarning,
|
|
'lex tool requested, but lex or flex binary not found in ENV PATH'
|
|
)
|
|
|
|
|
|
def generate(env):
|
|
"""Add Builders and construction variables for lex to an Environment."""
|
|
c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
|
|
|
|
# C
|
|
c_file.add_action(".l", LexAction)
|
|
c_file.add_emitter(".l", lexEmitter)
|
|
|
|
c_file.add_action(".lex", LexAction)
|
|
c_file.add_emitter(".lex", lexEmitter)
|
|
|
|
# Objective-C
|
|
cxx_file.add_action(".lm", LexAction)
|
|
cxx_file.add_emitter(".lm", lexEmitter)
|
|
|
|
# C++
|
|
cxx_file.add_action(".ll", LexAction)
|
|
cxx_file.add_emitter(".ll", lexEmitter)
|
|
|
|
env["LEXFLAGS"] = SCons.Util.CLVar("")
|
|
|
|
if sys.platform == 'win32':
|
|
# ignore the return - we do not need the full path here
|
|
_ = get_lex_path(env, append_paths=True)
|
|
env["LEX"] = env.Detect(BINS)
|
|
if not env.get("LEXUNISTD"):
|
|
env["LEXUNISTD"] = SCons.Util.CLVar("")
|
|
env["LEXCOM"] = "$LEX $LEXUNISTD $LEXFLAGS -t $SOURCES > $TARGET"
|
|
else:
|
|
env["LEX"] = env.Detect(BINS)
|
|
env["LEXCOM"] = "$LEX $LEXFLAGS -t $SOURCES > $TARGET"
|
|
|
|
def exists(env):
|
|
if sys.platform == 'win32':
|
|
return get_lex_path(env)
|
|
else:
|
|
return env.Detect(BINS)
|
|
|
|
# Local Variables:
|
|
# tab-width:4
|
|
# indent-tabs-mode:nil
|
|
# End:
|
|
# vim: set expandtab tabstop=4 shiftwidth=4:
|