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# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=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/.

@template
def Binary():
    '''Generic template for target binaries. Meant to be used by other
    templates.'''

    # Add -llog by default, since we use it all over the place.
    if CONFIG['OS_TARGET'] == 'Android':
        OS_LIBS += ['log']


@template
def Program(name):
    '''Template for program executables.'''
    PROGRAM = name

    Binary()


@template
def SimplePrograms(names, ext='.cpp'):
    '''Template for simple program executables.

    Those have a single source with the same base name as the executable.
    '''
    SIMPLE_PROGRAMS += names
    SOURCES += ['%s%s' % (name, ext) for name in names]

    Binary()


@template
def CppUnitTests(names, ext='.cpp'):
    '''Template for C++ unit tests.

    Those have a single source with the same base name as the executable.
    '''
    COMPILE_FLAGS['EXTRA_INCLUDES'] = ['-I%s/dist/include' % TOPOBJDIR,
                                       '-I%s/dist/include/testing' % TOPOBJDIR]
    CPP_UNIT_TESTS += names
    SOURCES += ['%s%s' % (name, ext) for name in names]

    Binary()


@template
def Library(name):
    '''Template for libraries.'''
    LIBRARY_NAME = name

@template
def AllowCompilerWarnings():
    COMPILE_FLAGS['WARNINGS_AS_ERRORS'] = []

@template
def DisableCompilerWarnings():
    COMPILE_FLAGS['WARNINGS_CFLAGS'] = []

@template
def RustLibrary(name, features=None, output_category=None, is_gkrust=False):
    '''Template for Rust libraries.'''
    Library(name)

    IS_RUST_LIBRARY = True
    # Some Rust build scripts compile C/C++ sources, don't error on warnings for them.
    AllowCompilerWarnings()

    # And furthermore, don't even show warnings for them, so they don't regress
    # the Compiler Warnings build metric
    # <https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Automated_Performance_Testing_and_Sheriffing/Build_Metrics#compiler_warnings>.
    DisableCompilerWarnings()

    if features:
        RUST_LIBRARY_FEATURES = features

    if output_category:
        RUST_LIBRARY_OUTPUT_CATEGORY = output_category

    if is_gkrust:
        IS_GKRUST = True


@template
def SharedLibrary(name, output_category=None):
    '''Template for shared libraries.'''
    Library(name)

    FORCE_SHARED_LIB = True

    if output_category:
        SHARED_LIBRARY_OUTPUT_CATEGORY = output_category

    Binary()


@template
def Framework(name, output_category=None):
    '''Template for OSX Frameworks.'''
    SharedLibrary(name, output_category)

    IS_FRAMEWORK = True


@template
def HostProgram(name):
    '''Template for build tools executables.'''
    HOST_PROGRAM = name


@template
def HostSimplePrograms(names, ext='.cpp'):
    '''Template for simple build tools executables.

    Those have a single source with the same base name as the executable.
    '''
    HOST_SIMPLE_PROGRAMS += names
    HOST_SOURCES += ['%s%s' % (name.replace('host_', ''), ext)
        for name in names]


@template
def HostSharedLibrary(name):
    '''Template for build tools libraries.'''
    if name != 'clang-plugin':
        error('Please make sure host shared library support is complete '
              'before using for something else than the clang plugin')

    HOST_LIBRARY_NAME = name

    FORCE_SHARED_LIB = True

@template
def HostLibrary(name):
    '''Template for build tools libraries.'''
    HOST_LIBRARY_NAME = name

@template
def HostRustLibrary(name, features=None):
    '''Template for host Rust libraries.'''
    HostLibrary(name)

    IS_RUST_LIBRARY = True
    # Some Rust build scripts compile C/C++ sources, don't error on warnings for them.
    AllowCompilerWarnings()

    if features:
        HOST_RUST_LIBRARY_FEATURES = features

@template
def DisableStlWrapping():
    COMPILE_FLAGS['STL'] = []

@template
def NoVisibilityFlags():
    COMPILE_FLAGS['VISIBILITY'] = []

@template
def ForceInclude(*headers):
    """Force includes a set of header files in C++ compilations"""
    if CONFIG['CC_TYPE'] == 'clang-cl':
        include_flag = '-FI'
    else:
        include_flag = '-include'
    for header in headers:
        CXXFLAGS += [include_flag, header]

@template
def GeneratedFile(name, *names, **kwargs):
    """Add one or more GENERATED_FILES with the given attributes.

    You must pass in at least one generated file (the "name" argument). Other
    names can be included as positional arguments after "name"."""
    script = kwargs.pop('script', None)
    entry_point = kwargs.pop('entry_point', None)
    inputs = kwargs.pop('inputs', [])
    flags = kwargs.pop('flags', [])
    force = kwargs.pop('force', False)
    if kwargs:
        error('Unrecognized argument(s) to GeneratedFile: %s' %
              ', '.join(kwargs))
    if entry_point and not script:
       error('entry_point cannot be provided if script is not provided')
    if script and ':' in script:
       error('script should not include a `:`. If you want to provide an '
             'alternative entry point for your script, use the entry_point '
             'parameter.')

    key = (name,) + names if names else name
    GENERATED_FILES += [key]
    generated_file = GENERATED_FILES[key]
    if script and not entry_point:
        generated_file.script = script
    if script and entry_point:
        generated_file.script = script + ':' + entry_point
    generated_file.inputs = inputs
    generated_file.flags = flags
    generated_file.force = force

@template
def CbindgenHeader(name, inputs):
    """Add one GENERATED_FILES by running RunCbindgen.py"""

    inputs = ['!/config/cbindgen-metadata.json'] + inputs
    GeneratedFile(name, script='/build/RunCbindgen.py',
                  entry_point='generate', inputs=inputs)


include('gecko_templates.mozbuild')
include('test_templates.mozbuild')


@template
def DefineAndWasmDefine(k, v):
    DEFINES[k] = v
    WASM_DEFINES[k] = v