# MIT License
#
# Copyright The SCons Foundation
#
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# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
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# permit persons to whom the Software is furnished to do so, subject to
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# The above copyright notice and this permission notice shall be included
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"""Scanner for the Digital Mars "D" programming language.

Coded by Andy Friesen, 17 Nov 2003
"""

import SCons.Scanner

def DScanner():
    """Return a prototype Scanner instance for scanning D source files"""
    ds = D()
    return ds

class D(SCons.Scanner.Classic):
    def __init__ (self):
        SCons.Scanner.Classic.__init__ (
            self,
            name = "DScanner",
            suffixes = '$DSUFFIXES',
            path_variable = 'DPATH',
            regex = r'(?:import\s+)([\w\s=,.]+)(?:\s*:[\s\w,=]+)?(?:;)'
        )

    def find_include(self, include, source_dir, path):
        # translate dots (package separators) to slashes
        inc = include.replace('.', '/')

        i = SCons.Node.FS.find_file(inc + '.d', (source_dir,) + path)
        if i is None:
            i = SCons.Node.FS.find_file (inc + '.di', (source_dir,) + path)
        return i, include

    def find_include_names(self, node):
        includes = []
        for iii in self.cre.findall(node.get_text_contents()):
            for jjj in iii.split(','):
                kkk = jjj.split('=')[-1]
                includes.append(kkk.strip())
        return includes

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