from __future__ import print_function

"""SCons.Tool.DCommon

Common code for the various D tools.

Coded by Russel Winder (russel@winder.org.uk)
2012-09-06
"""

#
# Copyright (c) 2001 - 2019 The SCons Foundation
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# 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.
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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__revision__ = "src/engine/SCons/Tool/DCommon.py 103260fce95bf5db1c35fb2371983087d85dd611 2019-07-13 18:25:30 bdbaddog"

import os.path


def isD(env, source):
    if not source:
        return 0
    for s in source:
        if s.sources:
            ext = os.path.splitext(str(s.sources[0]))[1]
            if ext == '.d':
                return 1
    return 0


def addDPATHToEnv(env, executable):
    dPath = env.WhereIs(executable)
    if dPath:
        phobosDir = dPath[:dPath.rindex(executable)] + '/../src/phobos'
        if os.path.isdir(phobosDir):
            env.Append(DPATH=[phobosDir])


def allAtOnceEmitter(target, source, env):
    if env['DC'] in ('ldc2', 'dmd'):
        env.SideEffect(str(target[0]) + '.o', target[0])
        env.Clean(target[0], str(target[0]) + '.o')
    return target, source


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