| Index: sky/engine/bindings2/scripts/blink_idl_lexer.py
|
| diff --git a/sky/engine/bindings2/scripts/blink_idl_lexer.py b/sky/engine/bindings2/scripts/blink_idl_lexer.py
|
| deleted file mode 100644
|
| index ba68c6c7dce1f27fee35f768d536401abfe5520b..0000000000000000000000000000000000000000
|
| --- a/sky/engine/bindings2/scripts/blink_idl_lexer.py
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| +++ /dev/null
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| @@ -1,143 +0,0 @@
|
| -# Copyright (C) 2013 Google Inc. All rights reserved.
|
| -#
|
| -# Redistribution and use in source and binary forms, with or without
|
| -# modification, are permitted provided that the following conditions are
|
| -# met:
|
| -#
|
| -# * Redistributions of source code must retain the above copyright
|
| -# notice, this list of conditions and the following disclaimer.
|
| -# * Redistributions in binary form must reproduce the above
|
| -# copyright notice, this list of conditions and the following disclaimer
|
| -# in the documentation and/or other materials provided with the
|
| -# distribution.
|
| -# * Neither the name of Google Inc. nor the names of its
|
| -# contributors may be used to endorse or promote products derived from
|
| -# this software without specific prior written permission.
|
| -#
|
| -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
| -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
| -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
| -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
| -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
| -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
| -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
| -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
| -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
| -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
| -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
| -
|
| -"""Lexer for Blink IDL.
|
| -
|
| -The lexer uses the PLY (Python Lex-Yacc) library to build a tokenizer which
|
| -understands the Blink dialect of Web IDL and produces a token stream suitable
|
| -for the Blink IDL parser.
|
| -
|
| -Blink IDL is identical to Web IDL at the token level, but the base lexer
|
| -does not discard comments. We need to override (and not include comments in
|
| -the token stream), as otherwise comments must be explicitly included in the
|
| -phrase grammar of the parser.
|
| -
|
| -FIXME: Change base lexer to discard comments, and simply used the base
|
| -lexer, eliminating this separate lexer.
|
| -
|
| -Web IDL:
|
| - http://www.w3.org/TR/WebIDL/
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| -Web IDL Grammar:
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| - http://www.w3.org/TR/WebIDL/#idl-grammar
|
| -PLY:
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| - http://www.dabeaz.com/ply/
|
| -
|
| -Design doc:
|
| -http://www.chromium.org/developers/design-documents/idl-compiler#TOC-Front-end
|
| -"""
|
| -
|
| -# Disable attribute validation, as lint can't import parent class to check
|
| -# pylint: disable=E1101
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| -
|
| -import os.path
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| -import sys
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| -
|
| -# PLY is in Chromium src/third_party/ply
|
| -module_path, module_name = os.path.split(__file__)
|
| -third_party = os.path.join(module_path, os.pardir, os.pardir, os.pardir, os.pardir)
|
| -# Insert at front to override system libraries, and after path[0] == script dir
|
| -sys.path.insert(1, third_party)
|
| -from ply import lex
|
| -
|
| -# Base lexer is in Chromium src/tools/idl_parser
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| -tools_dir = os.path.join(third_party, os.pardir, 'tools')
|
| -sys.path.append(tools_dir)
|
| -from idl_parser.idl_lexer import IDLLexer
|
| -
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| -LEXTAB = 'lextab'
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| -REMOVE_TOKENS = ['COMMENT']
|
| -
|
| -
|
| -class BlinkIDLLexer(IDLLexer):
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| - # ignore comments
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| - def t_COMMENT(self, t):
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| - r'(/\*(.|\n)*?\*/)|(//.*(\n[ \t]*//.*)*)'
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| - self.AddLines(t.value.count('\n'))
|
| -
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| - # Analogs to _AddToken/_AddTokens in base lexer
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| - # Needed to remove COMMENT token, since comments ignored
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| - def _RemoveToken(self, token):
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| - if token in self.tokens:
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| - self.tokens.remove(token)
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| -
|
| - def _RemoveTokens(self, tokens):
|
| - for token in tokens:
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| - self._RemoveToken(token)
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| -
|
| - def __init__(self, debug=False, optimize=True, outputdir=None,
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| - rewrite_tables=False):
|
| - if debug:
|
| - # Turn off optimization and caching to help debugging
|
| - optimize = False
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| - outputdir = None
|
| - if outputdir:
|
| - # Need outputdir in path because lex imports the cached lex table
|
| - # as a Python module
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| - sys.path.append(outputdir)
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| -
|
| - if rewrite_tables:
|
| - tablefile_root = os.path.join(outputdir, LEXTAB)
|
| - # Also remove the .pyc/.pyo files, or they'll be used even if
|
| - # the .py file doesn't exist.
|
| - for ext in ('.py', '.pyc', '.pyo'):
|
| - try:
|
| - os.unlink(tablefile_root + ext)
|
| - except OSError:
|
| - pass
|
| -
|
| - IDLLexer.__init__(self)
|
| - # Overrides to parent class
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| - self._RemoveTokens(REMOVE_TOKENS)
|
| - # Optimized mode substantially decreases startup time (by disabling
|
| - # error checking), and also allows use of Python's optimized mode.
|
| - # See: Optimized Mode
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| - # http://www.dabeaz.com/ply/ply.html#ply_nn15
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| - self._lexobj = lex.lex(object=self,
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| - debug=debug,
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| - optimize=optimize,
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| - lextab=LEXTAB,
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| - outputdir=outputdir)
|
| -
|
| -
|
| -################################################################################
|
| -
|
| -def main(argv):
|
| - # If file itself executed, build and cache lex table
|
| - try:
|
| - outputdir = argv[1]
|
| - except IndexError as err:
|
| - print 'Usage: %s OUTPUT_DIR' % argv[0]
|
| - return 1
|
| - # Important: rewrite_tables=True causes the cache file to be deleted if it
|
| - # exists, thus making sure that PLY doesn't load it instead of regenerating
|
| - # the parse table.
|
| - lexer = BlinkIDLLexer(outputdir=outputdir, rewrite_tables=True)
|
| -
|
| -
|
| -if __name__ == '__main__':
|
| - sys.exit(main(sys.argv))
|
|
|