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"""SCons.Tool.swig
Tool-specific initialization for swig.
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__
#
# 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__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import os.path
import re
import string
import SCons.Action
import SCons.Defaults
import SCons.Scanner
import SCons.Tool
import SCons.Util
SwigAction = SCons.Action.Action('$SWIGCOM', '$SWIGCOMSTR')
def swigSuffixEmitter(env, source):
if '-c++' in SCons.Util.CLVar(env.subst("$SWIGFLAGS", source=source)):
return '$SWIGCXXFILESUFFIX'
else:
return '$SWIGCFILESUFFIX'
# Match '%module test', as well as '%module(directors="1") test'
# Also allow for test to be quoted (SWIG permits double quotes, but not single)
_reModule = re.compile(r'%module(\s*\(.*\))?\s+("?)(.+)\2')
def _find_modules(src):
"""Find all modules referenced by %module lines in `src`, a SWIG .i file.
Returns a list of all modules, and a flag set if SWIG directors have
been requested (SWIG will generate an additional header file in this
case.)"""
directors = 0
mnames = []
matches = _reModule.findall(open(src).read())
for m in matches:
mnames.append(m[2])
directors = directors or string.find(m[0], 'directors') >= 0
return mnames, directors
def _add_director_header_targets(target, env):
# Directors only work with C++ code, not C
suffix = env.subst(env['SWIGCXXFILESUFFIX'])
# For each file ending in SWIGCXXFILESUFFIX, add a new target director
# header by replacing the ending with SWIGDIRECTORSUFFIX.
for x in target[:]:
n = x.name
d = x.dir
if n[-len(suffix):] == suffix:
target.append(d.File(n[:-len(suffix)] + env['SWIGDIRECTORSUFFIX']))
def _swigEmitter(target, source, env):
swigflags = env.subst("$SWIGFLAGS", target=target, source=source)
flags = SCons.Util.CLVar(swigflags)
for src in source:
src = str(src.rfile())
mnames = None
if "-python" in flags and "-noproxy" not in flags:
if mnames is None:
mnames, directors = _find_modules(src)
if directors:
_add_director_header_targets(target, env)
target.extend(map(lambda m, d=target[0].dir:
d.File(m + ".py"), mnames))
if "-java" in flags:
if mnames is None:
mnames, directors = _find_modules(src)
if directors:
_add_director_header_targets(target, env)
java_files = map(lambda m: [m + ".java", m + "JNI.java"], mnames)
java_files = SCons.Util.flatten(java_files)
outdir = env.subst('$SWIGOUTDIR', target=target, source=source)
if outdir:
java_files = map(lambda j, o=outdir: os.path.join(o, j), java_files)
java_files = map(env.fs.File, java_files)
for jf in java_files:
t_from_s = lambda t, p, s, x: t.dir
SCons.Util.AddMethod(jf, t_from_s, 'target_from_source')
target.extend(java_files)
return (target, source)
def generate(env):
"""Add Builders and construction variables for swig to an Environment."""
c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
c_file.suffix['.i'] = swigSuffixEmitter
cxx_file.suffix['.i'] = swigSuffixEmitter
c_file.add_action('.i', SwigAction)
c_file.add_emitter('.i', _swigEmitter)
cxx_file.add_action('.i', SwigAction)
cxx_file.add_emitter('.i', _swigEmitter)
java_file = SCons.Tool.CreateJavaFileBuilder(env)
java_file.suffix['.i'] = swigSuffixEmitter
java_file.add_action('.i', SwigAction)
java_file.add_emitter('.i', _swigEmitter)
env['SWIG'] = 'swig'
env['SWIGFLAGS'] = SCons.Util.CLVar('')
env['SWIGDIRECTORSUFFIX'] = '_wrap.h'
env['SWIGCFILESUFFIX'] = '_wrap$CFILESUFFIX'
env['SWIGCXXFILESUFFIX'] = '_wrap$CXXFILESUFFIX'
env['_SWIGOUTDIR'] = r'${"-outdir \"%s\"" % SWIGOUTDIR}'
env['SWIGPATH'] = []
env['SWIGINCPREFIX'] = '-I'
env['SWIGINCSUFFIX'] = ''
env['_SWIGINCFLAGS'] = '$( ${_concat(SWIGINCPREFIX, SWIGPATH, SWIGINCSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)'
env['SWIGCOM'] = '$SWIG -o $TARGET ${_SWIGOUTDIR} ${_SWIGINCFLAGS} $SWIGFLAGS $SOURCES'
expr = '^[ \t]*%[ \t]*(?:include|import|extern)[ \t]*(<|"?)([^>\s"]+)(?:>|"?)'
scanner = SCons.Scanner.ClassicCPP("SWIGScan", ".i", "SWIGPATH", expr)
env.Append(SCANNERS = scanner)
def exists(env):
return env.Detect(['swig'])
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