Remove ply from OpenSCAD directory as installed as part of FreeCAD
This commit is contained in:
KeithSloan
committed by
Yorik van Havre
Yorik van Havre
parent
5da9197bc5
commit
0b623cbf0c
@@ -1,40 +0,0 @@
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February 15, 2018
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Announcing : PLY-3.11 (Python Lex-Yacc)
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http://www.dabeaz.com/ply
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I'm pleased to announce PLY-3.11--a pure Python implementation of the
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common parsing tools lex and yacc. PLY-3.11 is a minor bug fix
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release. It supports both Python 2 and Python 3.
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If you are new to PLY, here are a few highlights:
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- PLY is closely modeled after traditional lex/yacc. If you know how
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to use these or similar tools in other languages, you will find
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PLY to be comparable.
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- PLY provides very extensive error reporting and diagnostic
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information to assist in parser construction. The original
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implementation was developed for instructional purposes. As
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a result, the system tries to identify the most common types
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of errors made by novice users.
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- PLY provides full support for empty productions, error recovery,
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precedence rules, and ambiguous grammars.
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- Parsing is based on LR-parsing which is fast, memory efficient,
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better suited to large grammars, and which has a number of nice
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properties when dealing with syntax errors and other parsing
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problems. Currently, PLY can build its parsing tables using
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either SLR or LALR(1) algorithms.
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More information about PLY can be obtained on the PLY webpage at:
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http://www.dabeaz.com/ply
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PLY is freely available.
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Cheers,
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David Beazley (http://www.dabeaz.com)
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# PLY (Python Lex-Yacc) Version 3.11
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[](https://travis-ci.org/dabeaz/ply)
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Copyright (C) 2001-2018
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David M. Beazley (Dabeaz LLC)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of the David Beazley or Dabeaz LLC may be used to
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endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Introduction
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============
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PLY is a 100% Python implementation of the common parsing tools lex
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and yacc. Here are a few highlights:
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- PLY is very closely modeled after traditional lex/yacc.
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If you know how to use these tools in C, you will find PLY
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to be similar.
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- PLY provides *very* extensive error reporting and diagnostic
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information to assist in parser construction. The original
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implementation was developed for instructional purposes. As
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a result, the system tries to identify the most common types
|
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of errors made by novice users.
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- PLY provides full support for empty productions, error recovery,
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precedence specifiers, and moderately ambiguous grammars.
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|
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- Parsing is based on LR-parsing which is fast, memory efficient,
|
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better suited to large grammars, and which has a number of nice
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properties when dealing with syntax errors and other parsing problems.
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Currently, PLY builds its parsing tables using the LALR(1)
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algorithm used in yacc.
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- PLY uses Python introspection features to build lexers and parsers.
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This greatly simplifies the task of parser construction since it reduces
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the number of files and eliminates the need to run a separate lex/yacc
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tool before running your program.
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- PLY can be used to build parsers for "real" programming languages.
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Although it is not ultra-fast due to its Python implementation,
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PLY can be used to parse grammars consisting of several hundred
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rules (as might be found for a language like C). The lexer and LR
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parser are also reasonably efficient when parsing typically
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sized programs. People have used PLY to build parsers for
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C, C++, ADA, and other real programming languages.
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How to Use
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==========
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PLY consists of two files : lex.py and yacc.py. These are contained
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within the 'ply' directory which may also be used as a Python package.
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To use PLY, simply copy the 'ply' directory to your project and import
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lex and yacc from the associated 'ply' package. For example:
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import ply.lex as lex
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import ply.yacc as yacc
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Alternatively, you can copy just the files lex.py and yacc.py
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individually and use them as modules. For example:
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import lex
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import yacc
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The file setup.py can be used to install ply using distutils.
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The file doc/ply.html contains complete documentation on how to use
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the system.
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The example directory contains several different examples including a
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PLY specification for ANSI C as given in K&R 2nd Ed.
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A simple example is found at the end of this document
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Requirements
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============
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PLY requires the use of Python 2.6 or greater. However, you should
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use the latest Python release if possible. It should work on just
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about any platform. PLY has been tested with both CPython and Jython.
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It also seems to work with IronPython.
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Resources
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=========
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More information about PLY can be obtained on the PLY webpage at:
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http://www.dabeaz.com/ply
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For a detailed overview of parsing theory, consult the excellent
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book "Compilers : Principles, Techniques, and Tools" by Aho, Sethi, and
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Ullman. The topics found in "Lex & Yacc" by Levine, Mason, and Brown
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may also be useful.
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The GitHub page for PLY can be found at:
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https://github.com/dabeaz/ply
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An old and relatively inactive discussion group for PLY is found at:
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http://groups.google.com/group/ply-hack
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Acknowledgments
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===============
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A special thanks is in order for all of the students in CS326 who
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suffered through about 25 different versions of these tools :-).
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The CHANGES file acknowledges those who have contributed patches.
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Elias Ioup did the first implementation of LALR(1) parsing in PLY-1.x.
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Andrew Waters and Markus Schoepflin were instrumental in reporting bugs
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and testing a revised LALR(1) implementation for PLY-2.0.
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Special Note for PLY-3.0
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========================
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PLY-3.0 the first PLY release to support Python 3. However, backwards
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compatibility with Python 2.6 is still preserved. PLY provides dual
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Python 2/3 compatibility by restricting its implementation to a common
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subset of basic language features. You should not convert PLY using
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2to3--it is not necessary and may in fact break the implementation.
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Example
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=======
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Here is a simple example showing a PLY implementation of a calculator
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with variables.
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# -----------------------------------------------------------------------------
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# calc.py
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#
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# A simple calculator with variables.
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# -----------------------------------------------------------------------------
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tokens = (
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'NAME','NUMBER',
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'PLUS','MINUS','TIMES','DIVIDE','EQUALS',
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'LPAREN','RPAREN',
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)
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# Tokens
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t_PLUS = r'\+'
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t_MINUS = r'-'
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t_TIMES = r'\*'
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t_DIVIDE = r'/'
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t_EQUALS = r'='
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t_LPAREN = r'\('
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t_RPAREN = r'\)'
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t_NAME = r'[a-zA-Z_][a-zA-Z0-9_]*'
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def t_NUMBER(t):
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r'\d+'
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t.value = int(t.value)
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return t
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# Ignored characters
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t_ignore = " \t"
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def t_newline(t):
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r'\n+'
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t.lexer.lineno += t.value.count("\n")
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def t_error(t):
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print("Illegal character '%s'" % t.value[0])
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t.lexer.skip(1)
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# Build the lexer
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import ply.lex as lex
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lex.lex()
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# Precedence rules for the arithmetic operators
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precedence = (
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('left','PLUS','MINUS'),
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('left','TIMES','DIVIDE'),
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('right','UMINUS'),
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)
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# dictionary of names (for storing variables)
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names = { }
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def p_statement_assign(p):
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'statement : NAME EQUALS expression'
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names[p[1]] = p[3]
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def p_statement_expr(p):
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'statement : expression'
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print(p[1])
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def p_expression_binop(p):
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'''expression : expression PLUS expression
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| expression MINUS expression
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| expression TIMES expression
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| expression DIVIDE expression'''
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if p[2] == '+' : p[0] = p[1] + p[3]
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elif p[2] == '-': p[0] = p[1] - p[3]
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elif p[2] == '*': p[0] = p[1] * p[3]
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elif p[2] == '/': p[0] = p[1] / p[3]
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def p_expression_uminus(p):
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'expression : MINUS expression %prec UMINUS'
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p[0] = -p[2]
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def p_expression_group(p):
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'expression : LPAREN expression RPAREN'
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p[0] = p[2]
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def p_expression_number(p):
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'expression : NUMBER'
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p[0] = p[1]
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def p_expression_name(p):
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'expression : NAME'
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try:
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p[0] = names[p[1]]
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except LookupError:
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print("Undefined name '%s'" % p[1])
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p[0] = 0
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def p_error(p):
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print("Syntax error at '%s'" % p.value)
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import ply.yacc as yacc
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yacc.yacc()
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while True:
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try:
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s = raw_input('calc > ') # use input() on Python 3
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except EOFError:
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break
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yacc.parse(s)
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Bug Reports and Patches
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=======================
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My goal with PLY is to simply have a decent lex/yacc implementation
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for Python. As a general rule, I don't spend huge amounts of time
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working on it unless I receive very specific bug reports and/or
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patches to fix problems. I also try to incorporate submitted feature
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requests and enhancements into each new version. Please visit the PLY
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github page at https://github.com/dabeaz/ply to submit issues and pull
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requests. To contact me about bugs and/or new features, please send
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email to dave@dabeaz.com.
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-- Dave
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@@ -1,5 +0,0 @@
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# PLY package
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# Author: David Beazley (dave@dabeaz.com)
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__version__ = '3.11'
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__all__ = ['lex','yacc']
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@@ -1,914 +0,0 @@
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# -----------------------------------------------------------------------------
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# cpp.py
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#
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# Author: David Beazley (http://www.dabeaz.com)
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# Copyright (C) 2007
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# All rights reserved
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#
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# This module implements an ANSI-C style lexical preprocessor for PLY.
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# -----------------------------------------------------------------------------
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from __future__ import generators
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import sys
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# Some Python 3 compatibility shims
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if sys.version_info.major < 3:
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STRING_TYPES = (str, unicode)
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else:
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STRING_TYPES = str
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xrange = range
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# -----------------------------------------------------------------------------
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# Default preprocessor lexer definitions. These tokens are enough to get
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# a basic preprocessor working. Other modules may import these if they want
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# -----------------------------------------------------------------------------
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tokens = (
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'CPP_ID','CPP_INTEGER', 'CPP_FLOAT', 'CPP_STRING', 'CPP_CHAR', 'CPP_WS', 'CPP_COMMENT1', 'CPP_COMMENT2', 'CPP_POUND','CPP_DPOUND'
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)
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literals = "+-*/%|&~^<>=!?()[]{}.,;:\\\'\""
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# Whitespace
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def t_CPP_WS(t):
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r'\s+'
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t.lexer.lineno += t.value.count("\n")
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return t
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t_CPP_POUND = r'\#'
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t_CPP_DPOUND = r'\#\#'
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# Identifier
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t_CPP_ID = r'[A-Za-z_][\w_]*'
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# Integer literal
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def CPP_INTEGER(t):
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r'(((((0x)|(0X))[0-9a-fA-F]+)|(\d+))([uU][lL]|[lL][uU]|[uU]|[lL])?)'
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return t
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t_CPP_INTEGER = CPP_INTEGER
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|
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# Floating literal
|
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t_CPP_FLOAT = r'((\d+)(\.\d+)(e(\+|-)?(\d+))? | (\d+)e(\+|-)?(\d+))([lL]|[fF])?'
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# String literal
|
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def t_CPP_STRING(t):
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r'\"([^\\\n]|(\\(.|\n)))*?\"'
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t.lexer.lineno += t.value.count("\n")
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return t
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# Character constant 'c' or L'c'
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def t_CPP_CHAR(t):
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r'(L)?\'([^\\\n]|(\\(.|\n)))*?\''
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t.lexer.lineno += t.value.count("\n")
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return t
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# Comment
|
||||
def t_CPP_COMMENT1(t):
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r'(/\*(.|\n)*?\*/)'
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ncr = t.value.count("\n")
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t.lexer.lineno += ncr
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||||
# replace with one space or a number of '\n'
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t.type = 'CPP_WS'; t.value = '\n' * ncr if ncr else ' '
|
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return t
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||||
|
||||
# Line comment
|
||||
def t_CPP_COMMENT2(t):
|
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r'(//.*?(\n|$))'
|
||||
# replace with '/n'
|
||||
t.type = 'CPP_WS'; t.value = '\n'
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return t
|
||||
|
||||
def t_error(t):
|
||||
t.type = t.value[0]
|
||||
t.value = t.value[0]
|
||||
t.lexer.skip(1)
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||||
return t
|
||||
|
||||
import re
|
||||
import copy
|
||||
import time
|
||||
import os.path
|
||||
|
||||
# -----------------------------------------------------------------------------
|
||||
# trigraph()
|
||||
#
|
||||
# Given an input string, this function replaces all trigraph sequences.
|
||||
# The following mapping is used:
|
||||
#
|
||||
# ??= #
|
||||
# ??/ \
|
||||
# ??' ^
|
||||
# ??( [
|
||||
# ??) ]
|
||||
# ??! |
|
||||
# ??< {
|
||||
# ??> }
|
||||
# ??- ~
|
||||
# -----------------------------------------------------------------------------
|
||||
|
||||
_trigraph_pat = re.compile(r'''\?\?[=/\'\(\)\!<>\-]''')
|
||||
_trigraph_rep = {
|
||||
'=':'#',
|
||||
'/':'\\',
|
||||
"'":'^',
|
||||
'(':'[',
|
||||
')':']',
|
||||
'!':'|',
|
||||
'<':'{',
|
||||
'>':'}',
|
||||
'-':'~'
|
||||
}
|
||||
|
||||
def trigraph(input):
|
||||
return _trigraph_pat.sub(lambda g: _trigraph_rep[g.group()[-1]],input)
|
||||
|
||||
# ------------------------------------------------------------------
|
||||
# Macro object
|
||||
#
|
||||
# This object holds information about preprocessor macros
|
||||
#
|
||||
# .name - Macro name (string)
|
||||
# .value - Macro value (a list of tokens)
|
||||
# .arglist - List of argument names
|
||||
# .variadic - Boolean indicating whether or not variadic macro
|
||||
# .vararg - Name of the variadic parameter
|
||||
#
|
||||
# When a macro is created, the macro replacement token sequence is
|
||||
# pre-scanned and used to create patch lists that are later used
|
||||
# during macro expansion
|
||||
# ------------------------------------------------------------------
|
||||
|
||||
class Macro(object):
|
||||
def __init__(self,name,value,arglist=None,variadic=False):
|
||||
self.name = name
|
||||
self.value = value
|
||||
self.arglist = arglist
|
||||
self.variadic = variadic
|
||||
if variadic:
|
||||
self.vararg = arglist[-1]
|
||||
self.source = None
|
||||
|
||||
# ------------------------------------------------------------------
|
||||
# Preprocessor object
|
||||
#
|
||||
# Object representing a preprocessor. Contains macro definitions,
|
||||
# include directories, and other information
|
||||
# ------------------------------------------------------------------
|
||||
|
||||
class Preprocessor(object):
|
||||
def __init__(self,lexer=None):
|
||||
if lexer is None:
|
||||
lexer = lex.lexer
|
||||
self.lexer = lexer
|
||||
self.macros = { }
|
||||
self.path = []
|
||||
self.temp_path = []
|
||||
|
||||
# Probe the lexer for selected tokens
|
||||
self.lexprobe()
|
||||
|
||||
tm = time.localtime()
|
||||
self.define("__DATE__ \"%s\"" % time.strftime("%b %d %Y",tm))
|
||||
self.define("__TIME__ \"%s\"" % time.strftime("%H:%M:%S",tm))
|
||||
self.parser = None
|
||||
|
||||
# -----------------------------------------------------------------------------
|
||||
# tokenize()
|
||||
#
|
||||
# Utility function. Given a string of text, tokenize into a list of tokens
|
||||
# -----------------------------------------------------------------------------
|
||||
|
||||
def tokenize(self,text):
|
||||
tokens = []
|
||||
self.lexer.input(text)
|
||||
while True:
|
||||
tok = self.lexer.token()
|
||||
if not tok: break
|
||||
tokens.append(tok)
|
||||
return tokens
|
||||
|
||||
# ---------------------------------------------------------------------
|
||||
# error()
|
||||
#
|
||||
# Report a preprocessor error/warning of some kind
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def error(self,file,line,msg):
|
||||
print("%s:%d %s" % (file,line,msg))
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# lexprobe()
|
||||
#
|
||||
# This method probes the preprocessor lexer object to discover
|
||||
# the token types of symbols that are important to the preprocessor.
|
||||
# If this works right, the preprocessor will simply "work"
|
||||
# with any suitable lexer regardless of how tokens have been named.
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def lexprobe(self):
|
||||
|
||||
# Determine the token type for identifiers
|
||||
self.lexer.input("identifier")
|
||||
tok = self.lexer.token()
|
||||
if not tok or tok.value != "identifier":
|
||||
print("Couldn't determine identifier type")
|
||||
else:
|
||||
self.t_ID = tok.type
|
||||
|
||||
# Determine the token type for integers
|
||||
self.lexer.input("12345")
|
||||
tok = self.lexer.token()
|
||||
if not tok or int(tok.value) != 12345:
|
||||
print("Couldn't determine integer type")
|
||||
else:
|
||||
self.t_INTEGER = tok.type
|
||||
self.t_INTEGER_TYPE = type(tok.value)
|
||||
|
||||
# Determine the token type for strings enclosed in double quotes
|
||||
self.lexer.input("\"filename\"")
|
||||
tok = self.lexer.token()
|
||||
if not tok or tok.value != "\"filename\"":
|
||||
print("Couldn't determine string type")
|
||||
else:
|
||||
self.t_STRING = tok.type
|
||||
|
||||
# Determine the token type for whitespace--if any
|
||||
self.lexer.input(" ")
|
||||
tok = self.lexer.token()
|
||||
if not tok or tok.value != " ":
|
||||
self.t_SPACE = None
|
||||
else:
|
||||
self.t_SPACE = tok.type
|
||||
|
||||
# Determine the token type for newlines
|
||||
self.lexer.input("\n")
|
||||
tok = self.lexer.token()
|
||||
if not tok or tok.value != "\n":
|
||||
self.t_NEWLINE = None
|
||||
print("Couldn't determine token for newlines")
|
||||
else:
|
||||
self.t_NEWLINE = tok.type
|
||||
|
||||
self.t_WS = (self.t_SPACE, self.t_NEWLINE)
|
||||
|
||||
# Check for other characters used by the preprocessor
|
||||
chars = [ '<','>','#','##','\\','(',')',',','.']
|
||||
for c in chars:
|
||||
self.lexer.input(c)
|
||||
tok = self.lexer.token()
|
||||
if not tok or tok.value != c:
|
||||
print("Unable to lex '%s' required for preprocessor" % c)
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# add_path()
|
||||
#
|
||||
# Adds a search path to the preprocessor.
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def add_path(self,path):
|
||||
self.path.append(path)
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# group_lines()
|
||||
#
|
||||
# Given an input string, this function splits it into lines. Trailing whitespace
|
||||
# is removed. Any line ending with \ is grouped with the next line. This
|
||||
# function forms the lowest level of the preprocessor---grouping into text into
|
||||
# a line-by-line format.
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def group_lines(self,input):
|
||||
lex = self.lexer.clone()
|
||||
lines = [x.rstrip() for x in input.splitlines()]
|
||||
for i in xrange(len(lines)):
|
||||
j = i+1
|
||||
while lines[i].endswith('\\') and (j < len(lines)):
|
||||
lines[i] = lines[i][:-1]+lines[j]
|
||||
lines[j] = ""
|
||||
j += 1
|
||||
|
||||
input = "\n".join(lines)
|
||||
lex.input(input)
|
||||
lex.lineno = 1
|
||||
|
||||
current_line = []
|
||||
while True:
|
||||
tok = lex.token()
|
||||
if not tok:
|
||||
break
|
||||
current_line.append(tok)
|
||||
if tok.type in self.t_WS and '\n' in tok.value:
|
||||
yield current_line
|
||||
current_line = []
|
||||
|
||||
if current_line:
|
||||
yield current_line
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# tokenstrip()
|
||||
#
|
||||
# Remove leading/trailing whitespace tokens from a token list
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def tokenstrip(self,tokens):
|
||||
i = 0
|
||||
while i < len(tokens) and tokens[i].type in self.t_WS:
|
||||
i += 1
|
||||
del tokens[:i]
|
||||
i = len(tokens)-1
|
||||
while i >= 0 and tokens[i].type in self.t_WS:
|
||||
i -= 1
|
||||
del tokens[i+1:]
|
||||
return tokens
|
||||
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# collect_args()
|
||||
#
|
||||
# Collects comma separated arguments from a list of tokens. The arguments
|
||||
# must be enclosed in parenthesis. Returns a tuple (tokencount,args,positions)
|
||||
# where tokencount is the number of tokens consumed, args is a list of arguments,
|
||||
# and positions is a list of integers containing the starting index of each
|
||||
# argument. Each argument is represented by a list of tokens.
|
||||
#
|
||||
# When collecting arguments, leading and trailing whitespace is removed
|
||||
# from each argument.
|
||||
#
|
||||
# This function properly handles nested parenthesis and commas---these do not
|
||||
# define new arguments.
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def collect_args(self,tokenlist):
|
||||
args = []
|
||||
positions = []
|
||||
current_arg = []
|
||||
nesting = 1
|
||||
tokenlen = len(tokenlist)
|
||||
|
||||
# Search for the opening '('.
|
||||
i = 0
|
||||
while (i < tokenlen) and (tokenlist[i].type in self.t_WS):
|
||||
i += 1
|
||||
|
||||
if (i < tokenlen) and (tokenlist[i].value == '('):
|
||||
positions.append(i+1)
|
||||
else:
|
||||
self.error(self.source,tokenlist[0].lineno,"Missing '(' in macro arguments")
|
||||
return 0, [], []
|
||||
|
||||
i += 1
|
||||
|
||||
while i < tokenlen:
|
||||
t = tokenlist[i]
|
||||
if t.value == '(':
|
||||
current_arg.append(t)
|
||||
nesting += 1
|
||||
elif t.value == ')':
|
||||
nesting -= 1
|
||||
if nesting == 0:
|
||||
if current_arg:
|
||||
args.append(self.tokenstrip(current_arg))
|
||||
positions.append(i)
|
||||
return i+1,args,positions
|
||||
current_arg.append(t)
|
||||
elif t.value == ',' and nesting == 1:
|
||||
args.append(self.tokenstrip(current_arg))
|
||||
positions.append(i+1)
|
||||
current_arg = []
|
||||
else:
|
||||
current_arg.append(t)
|
||||
i += 1
|
||||
|
||||
# Missing end argument
|
||||
self.error(self.source,tokenlist[-1].lineno,"Missing ')' in macro arguments")
|
||||
return 0, [],[]
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# macro_prescan()
|
||||
#
|
||||
# Examine the macro value (token sequence) and identify patch points
|
||||
# This is used to speed up macro expansion later on---we'll know
|
||||
# right away where to apply patches to the value to form the expansion
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def macro_prescan(self,macro):
|
||||
macro.patch = [] # Standard macro arguments
|
||||
macro.str_patch = [] # String conversion expansion
|
||||
macro.var_comma_patch = [] # Variadic macro comma patch
|
||||
i = 0
|
||||
while i < len(macro.value):
|
||||
if macro.value[i].type == self.t_ID and macro.value[i].value in macro.arglist:
|
||||
argnum = macro.arglist.index(macro.value[i].value)
|
||||
# Conversion of argument to a string
|
||||
if i > 0 and macro.value[i-1].value == '#':
|
||||
macro.value[i] = copy.copy(macro.value[i])
|
||||
macro.value[i].type = self.t_STRING
|
||||
del macro.value[i-1]
|
||||
macro.str_patch.append((argnum,i-1))
|
||||
continue
|
||||
# Concatenation
|
||||
elif (i > 0 and macro.value[i-1].value == '##'):
|
||||
macro.patch.append(('c',argnum,i-1))
|
||||
del macro.value[i-1]
|
||||
i -= 1
|
||||
continue
|
||||
elif ((i+1) < len(macro.value) and macro.value[i+1].value == '##'):
|
||||
macro.patch.append(('c',argnum,i))
|
||||
del macro.value[i + 1]
|
||||
continue
|
||||
# Standard expansion
|
||||
else:
|
||||
macro.patch.append(('e',argnum,i))
|
||||
elif macro.value[i].value == '##':
|
||||
if macro.variadic and (i > 0) and (macro.value[i-1].value == ',') and \
|
||||
((i+1) < len(macro.value)) and (macro.value[i+1].type == self.t_ID) and \
|
||||
(macro.value[i+1].value == macro.vararg):
|
||||
macro.var_comma_patch.append(i-1)
|
||||
i += 1
|
||||
macro.patch.sort(key=lambda x: x[2],reverse=True)
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# macro_expand_args()
|
||||
#
|
||||
# Given a Macro and list of arguments (each a token list), this method
|
||||
# returns an expanded version of a macro. The return value is a token sequence
|
||||
# representing the replacement macro tokens
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def macro_expand_args(self,macro,args):
|
||||
# Make a copy of the macro token sequence
|
||||
rep = [copy.copy(_x) for _x in macro.value]
|
||||
|
||||
# Make string expansion patches. These do not alter the length of the replacement sequence
|
||||
|
||||
str_expansion = {}
|
||||
for argnum, i in macro.str_patch:
|
||||
if argnum not in str_expansion:
|
||||
str_expansion[argnum] = ('"%s"' % "".join([x.value for x in args[argnum]])).replace("\\","\\\\")
|
||||
rep[i] = copy.copy(rep[i])
|
||||
rep[i].value = str_expansion[argnum]
|
||||
|
||||
# Make the variadic macro comma patch. If the variadic macro argument is empty, we get rid
|
||||
comma_patch = False
|
||||
if macro.variadic and not args[-1]:
|
||||
for i in macro.var_comma_patch:
|
||||
rep[i] = None
|
||||
comma_patch = True
|
||||
|
||||
# Make all other patches. The order of these matters. It is assumed that the patch list
|
||||
# has been sorted in reverse order of patch location since replacements will cause the
|
||||
# size of the replacement sequence to expand from the patch point.
|
||||
|
||||
expanded = { }
|
||||
for ptype, argnum, i in macro.patch:
|
||||
# Concatenation. Argument is left unexpanded
|
||||
if ptype == 'c':
|
||||
rep[i:i+1] = args[argnum]
|
||||
# Normal expansion. Argument is macro expanded first
|
||||
elif ptype == 'e':
|
||||
if argnum not in expanded:
|
||||
expanded[argnum] = self.expand_macros(args[argnum])
|
||||
rep[i:i+1] = expanded[argnum]
|
||||
|
||||
# Get rid of removed comma if necessary
|
||||
if comma_patch:
|
||||
rep = [_i for _i in rep if _i]
|
||||
|
||||
return rep
|
||||
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# expand_macros()
|
||||
#
|
||||
# Given a list of tokens, this function performs macro expansion.
|
||||
# The expanded argument is a dictionary that contains macros already
|
||||
# expanded. This is used to prevent infinite recursion.
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def expand_macros(self,tokens,expanded=None):
|
||||
if expanded is None:
|
||||
expanded = {}
|
||||
i = 0
|
||||
while i < len(tokens):
|
||||
t = tokens[i]
|
||||
if t.type == self.t_ID:
|
||||
if t.value in self.macros and t.value not in expanded:
|
||||
# Yes, we found a macro match
|
||||
expanded[t.value] = True
|
||||
|
||||
m = self.macros[t.value]
|
||||
if not m.arglist:
|
||||
# A simple macro
|
||||
ex = self.expand_macros([copy.copy(_x) for _x in m.value],expanded)
|
||||
for e in ex:
|
||||
e.lineno = t.lineno
|
||||
tokens[i:i+1] = ex
|
||||
i += len(ex)
|
||||
else:
|
||||
# A macro with arguments
|
||||
j = i + 1
|
||||
while j < len(tokens) and tokens[j].type in self.t_WS:
|
||||
j += 1
|
||||
if j < len(tokens) and tokens[j].value == '(':
|
||||
tokcount,args,positions = self.collect_args(tokens[j:])
|
||||
if not m.variadic and len(args) != len(m.arglist):
|
||||
self.error(self.source,t.lineno,"Macro %s requires %d arguments" % (t.value,len(m.arglist)))
|
||||
i = j + tokcount
|
||||
elif m.variadic and len(args) < len(m.arglist)-1:
|
||||
if len(m.arglist) > 2:
|
||||
self.error(self.source,t.lineno,"Macro %s must have at least %d arguments" % (t.value, len(m.arglist)-1))
|
||||
else:
|
||||
self.error(self.source,t.lineno,"Macro %s must have at least %d argument" % (t.value, len(m.arglist)-1))
|
||||
i = j + tokcount
|
||||
else:
|
||||
if m.variadic:
|
||||
if len(args) == len(m.arglist)-1:
|
||||
args.append([])
|
||||
else:
|
||||
args[len(m.arglist)-1] = tokens[j+positions[len(m.arglist)-1]:j+tokcount-1]
|
||||
del args[len(m.arglist):]
|
||||
|
||||
# Get macro replacement text
|
||||
rep = self.macro_expand_args(m,args)
|
||||
rep = self.expand_macros(rep,expanded)
|
||||
for r in rep:
|
||||
r.lineno = t.lineno
|
||||
tokens[i:j+tokcount] = rep
|
||||
i += len(rep)
|
||||
else:
|
||||
# This is not a macro. It is just a word which
|
||||
# equals to name of the macro. Hence, go to the
|
||||
# next token.
|
||||
i += 1
|
||||
|
||||
del expanded[t.value]
|
||||
continue
|
||||
elif t.value == '__LINE__':
|
||||
t.type = self.t_INTEGER
|
||||
t.value = self.t_INTEGER_TYPE(t.lineno)
|
||||
|
||||
i += 1
|
||||
return tokens
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# evalexpr()
|
||||
#
|
||||
# Evaluate an expression token sequence for the purposes of evaluating
|
||||
# integral expressions.
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def evalexpr(self,tokens):
|
||||
# tokens = tokenize(line)
|
||||
# Search for defined macros
|
||||
i = 0
|
||||
while i < len(tokens):
|
||||
if tokens[i].type == self.t_ID and tokens[i].value == 'defined':
|
||||
j = i + 1
|
||||
needparen = False
|
||||
result = "0L"
|
||||
while j < len(tokens):
|
||||
if tokens[j].type in self.t_WS:
|
||||
j += 1
|
||||
continue
|
||||
elif tokens[j].type == self.t_ID:
|
||||
if tokens[j].value in self.macros:
|
||||
result = "1L"
|
||||
else:
|
||||
result = "0L"
|
||||
if not needparen: break
|
||||
elif tokens[j].value == '(':
|
||||
needparen = True
|
||||
elif tokens[j].value == ')':
|
||||
break
|
||||
else:
|
||||
self.error(self.source,tokens[i].lineno,"Malformed defined()")
|
||||
j += 1
|
||||
tokens[i].type = self.t_INTEGER
|
||||
tokens[i].value = self.t_INTEGER_TYPE(result)
|
||||
del tokens[i+1:j+1]
|
||||
i += 1
|
||||
tokens = self.expand_macros(tokens)
|
||||
for i,t in enumerate(tokens):
|
||||
if t.type == self.t_ID:
|
||||
tokens[i] = copy.copy(t)
|
||||
tokens[i].type = self.t_INTEGER
|
||||
tokens[i].value = self.t_INTEGER_TYPE("0L")
|
||||
elif t.type == self.t_INTEGER:
|
||||
tokens[i] = copy.copy(t)
|
||||
# Strip off any trailing suffixes
|
||||
tokens[i].value = str(tokens[i].value)
|
||||
while tokens[i].value[-1] not in "0123456789abcdefABCDEF":
|
||||
tokens[i].value = tokens[i].value[:-1]
|
||||
|
||||
expr = "".join([str(x.value) for x in tokens])
|
||||
expr = expr.replace("&&"," and ")
|
||||
expr = expr.replace("||"," or ")
|
||||
expr = expr.replace("!"," not ")
|
||||
try:
|
||||
result = eval(expr)
|
||||
except Exception:
|
||||
self.error(self.source,tokens[0].lineno,"Couldn't evaluate expression")
|
||||
result = 0
|
||||
return result
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# parsegen()
|
||||
#
|
||||
# Parse an input string/
|
||||
# ----------------------------------------------------------------------
|
||||
def parsegen(self,input,source=None):
|
||||
|
||||
# Replace trigraph sequences
|
||||
t = trigraph(input)
|
||||
lines = self.group_lines(t)
|
||||
|
||||
if not source:
|
||||
source = ""
|
||||
|
||||
self.define("__FILE__ \"%s\"" % source)
|
||||
|
||||
self.source = source
|
||||
chunk = []
|
||||
enable = True
|
||||
iftrigger = False
|
||||
ifstack = []
|
||||
|
||||
for x in lines:
|
||||
for i,tok in enumerate(x):
|
||||
if tok.type not in self.t_WS: break
|
||||
if tok.value == '#':
|
||||
# Preprocessor directive
|
||||
|
||||
# insert necessary whitespace instead of eaten tokens
|
||||
for tok in x:
|
||||
if tok.type in self.t_WS and '\n' in tok.value:
|
||||
chunk.append(tok)
|
||||
|
||||
dirtokens = self.tokenstrip(x[i+1:])
|
||||
if dirtokens:
|
||||
name = dirtokens[0].value
|
||||
args = self.tokenstrip(dirtokens[1:])
|
||||
else:
|
||||
name = ""
|
||||
args = []
|
||||
|
||||
if name == 'define':
|
||||
if enable:
|
||||
for tok in self.expand_macros(chunk):
|
||||
yield tok
|
||||
chunk = []
|
||||
self.define(args)
|
||||
elif name == 'include':
|
||||
if enable:
|
||||
for tok in self.expand_macros(chunk):
|
||||
yield tok
|
||||
chunk = []
|
||||
oldfile = self.macros['__FILE__']
|
||||
for tok in self.include(args):
|
||||
yield tok
|
||||
self.macros['__FILE__'] = oldfile
|
||||
self.source = source
|
||||
elif name == 'undef':
|
||||
if enable:
|
||||
for tok in self.expand_macros(chunk):
|
||||
yield tok
|
||||
chunk = []
|
||||
self.undef(args)
|
||||
elif name == 'ifdef':
|
||||
ifstack.append((enable,iftrigger))
|
||||
if enable:
|
||||
if not args[0].value in self.macros:
|
||||
enable = False
|
||||
iftrigger = False
|
||||
else:
|
||||
iftrigger = True
|
||||
elif name == 'ifndef':
|
||||
ifstack.append((enable,iftrigger))
|
||||
if enable:
|
||||
if args[0].value in self.macros:
|
||||
enable = False
|
||||
iftrigger = False
|
||||
else:
|
||||
iftrigger = True
|
||||
elif name == 'if':
|
||||
ifstack.append((enable,iftrigger))
|
||||
if enable:
|
||||
result = self.evalexpr(args)
|
||||
if not result:
|
||||
enable = False
|
||||
iftrigger = False
|
||||
else:
|
||||
iftrigger = True
|
||||
elif name == 'elif':
|
||||
if ifstack:
|
||||
if ifstack[-1][0]: # We only pay attention if outer "if" allows this
|
||||
if enable: # If already true, we flip enable False
|
||||
enable = False
|
||||
elif not iftrigger: # If False, but not triggered yet, we'll check expression
|
||||
result = self.evalexpr(args)
|
||||
if result:
|
||||
enable = True
|
||||
iftrigger = True
|
||||
else:
|
||||
self.error(self.source,dirtokens[0].lineno,"Misplaced #elif")
|
||||
|
||||
elif name == 'else':
|
||||
if ifstack:
|
||||
if ifstack[-1][0]:
|
||||
if enable:
|
||||
enable = False
|
||||
elif not iftrigger:
|
||||
enable = True
|
||||
iftrigger = True
|
||||
else:
|
||||
self.error(self.source,dirtokens[0].lineno,"Misplaced #else")
|
||||
|
||||
elif name == 'endif':
|
||||
if ifstack:
|
||||
enable,iftrigger = ifstack.pop()
|
||||
else:
|
||||
self.error(self.source,dirtokens[0].lineno,"Misplaced #endif")
|
||||
else:
|
||||
# Unknown preprocessor directive
|
||||
pass
|
||||
|
||||
else:
|
||||
# Normal text
|
||||
if enable:
|
||||
chunk.extend(x)
|
||||
|
||||
for tok in self.expand_macros(chunk):
|
||||
yield tok
|
||||
chunk = []
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# include()
|
||||
#
|
||||
# Implementation of file-inclusion
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def include(self,tokens):
|
||||
# Try to extract the filename and then process an include file
|
||||
if not tokens:
|
||||
return
|
||||
if tokens:
|
||||
if tokens[0].value != '<' and tokens[0].type != self.t_STRING:
|
||||
tokens = self.expand_macros(tokens)
|
||||
|
||||
if tokens[0].value == '<':
|
||||
# Include <...>
|
||||
i = 1
|
||||
while i < len(tokens):
|
||||
if tokens[i].value == '>':
|
||||
break
|
||||
i += 1
|
||||
else:
|
||||
print("Malformed #include <...>")
|
||||
return
|
||||
filename = "".join([x.value for x in tokens[1:i]])
|
||||
path = self.path + [""] + self.temp_path
|
||||
elif tokens[0].type == self.t_STRING:
|
||||
filename = tokens[0].value[1:-1]
|
||||
path = self.temp_path + [""] + self.path
|
||||
else:
|
||||
print("Malformed #include statement")
|
||||
return
|
||||
for p in path:
|
||||
iname = os.path.join(p,filename)
|
||||
try:
|
||||
data = open(iname,"r").read()
|
||||
dname = os.path.dirname(iname)
|
||||
if dname:
|
||||
self.temp_path.insert(0,dname)
|
||||
for tok in self.parsegen(data,filename):
|
||||
yield tok
|
||||
if dname:
|
||||
del self.temp_path[0]
|
||||
break
|
||||
except IOError:
|
||||
pass
|
||||
else:
|
||||
print("Couldn't find '%s'" % filename)
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# define()
|
||||
#
|
||||
# Define a new macro
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def define(self,tokens):
|
||||
if isinstance(tokens,STRING_TYPES):
|
||||
tokens = self.tokenize(tokens)
|
||||
|
||||
linetok = tokens
|
||||
try:
|
||||
name = linetok[0]
|
||||
if len(linetok) > 1:
|
||||
mtype = linetok[1]
|
||||
else:
|
||||
mtype = None
|
||||
if not mtype:
|
||||
m = Macro(name.value,[])
|
||||
self.macros[name.value] = m
|
||||
elif mtype.type in self.t_WS:
|
||||
# A normal macro
|
||||
m = Macro(name.value,self.tokenstrip(linetok[2:]))
|
||||
self.macros[name.value] = m
|
||||
elif mtype.value == '(':
|
||||
# A macro with arguments
|
||||
tokcount, args, positions = self.collect_args(linetok[1:])
|
||||
variadic = False
|
||||
for a in args:
|
||||
if variadic:
|
||||
print("No more arguments may follow a variadic argument")
|
||||
break
|
||||
astr = "".join([str(_i.value) for _i in a])
|
||||
if astr == "...":
|
||||
variadic = True
|
||||
a[0].type = self.t_ID
|
||||
a[0].value = '__VA_ARGS__'
|
||||
variadic = True
|
||||
del a[1:]
|
||||
continue
|
||||
elif astr[-3:] == "..." and a[0].type == self.t_ID:
|
||||
variadic = True
|
||||
del a[1:]
|
||||
# If, for some reason, "." is part of the identifier, strip off the name for the purposes
|
||||
# of macro expansion
|
||||
if a[0].value[-3:] == '...':
|
||||
a[0].value = a[0].value[:-3]
|
||||
continue
|
||||
if len(a) > 1 or a[0].type != self.t_ID:
|
||||
print("Invalid macro argument")
|
||||
break
|
||||
else:
|
||||
mvalue = self.tokenstrip(linetok[1+tokcount:])
|
||||
i = 0
|
||||
while i < len(mvalue):
|
||||
if i+1 < len(mvalue):
|
||||
if mvalue[i].type in self.t_WS and mvalue[i+1].value == '##':
|
||||
del mvalue[i]
|
||||
continue
|
||||
elif mvalue[i].value == '##' and mvalue[i+1].type in self.t_WS:
|
||||
del mvalue[i+1]
|
||||
i += 1
|
||||
m = Macro(name.value,mvalue,[x[0].value for x in args],variadic)
|
||||
self.macro_prescan(m)
|
||||
self.macros[name.value] = m
|
||||
else:
|
||||
print("Bad macro definition")
|
||||
except LookupError:
|
||||
print("Bad macro definition")
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# undef()
|
||||
#
|
||||
# Undefine a macro
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
def undef(self,tokens):
|
||||
id = tokens[0].value
|
||||
try:
|
||||
del self.macros[id]
|
||||
except LookupError:
|
||||
pass
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# parse()
|
||||
#
|
||||
# Parse input text.
|
||||
# ----------------------------------------------------------------------
|
||||
def parse(self,input,source=None,ignore={}):
|
||||
self.ignore = ignore
|
||||
self.parser = self.parsegen(input,source)
|
||||
|
||||
# ----------------------------------------------------------------------
|
||||
# token()
|
||||
#
|
||||
# Method to return individual tokens
|
||||
# ----------------------------------------------------------------------
|
||||
def token(self):
|
||||
try:
|
||||
while True:
|
||||
tok = next(self.parser)
|
||||
if tok.type not in self.ignore: return tok
|
||||
except StopIteration:
|
||||
self.parser = None
|
||||
return None
|
||||
|
||||
if __name__ == '__main__':
|
||||
import ply.lex as lex
|
||||
lexer = lex.lex()
|
||||
|
||||
# Run a preprocessor
|
||||
import sys
|
||||
f = open(sys.argv[1])
|
||||
input = f.read()
|
||||
|
||||
p = Preprocessor(lexer)
|
||||
p.parse(input,sys.argv[1])
|
||||
while True:
|
||||
tok = p.token()
|
||||
if not tok: break
|
||||
print(p.source, tok)
|
||||
@@ -1,127 +0,0 @@
|
||||
# ----------------------------------------------------------------------
|
||||
# ctokens.py
|
||||
#
|
||||
# Token specifications for symbols in ANSI C and C++. This file is
|
||||
# meant to be used as a library in other tokenizers.
|
||||
# ----------------------------------------------------------------------
|
||||
|
||||
# Reserved words
|
||||
|
||||
tokens = [
|
||||
# Literals (identifier, integer constant, float constant, string constant, char const)
|
||||
'ID', 'TYPEID', 'INTEGER', 'FLOAT', 'STRING', 'CHARACTER',
|
||||
|
||||
# Operators (+,-,*,/,%,|,&,~,^,<<,>>, ||, &&, !, <, <=, >, >=, ==, !=)
|
||||
'PLUS', 'MINUS', 'TIMES', 'DIVIDE', 'MODULO',
|
||||
'OR', 'AND', 'NOT', 'XOR', 'LSHIFT', 'RSHIFT',
|
||||
'LOR', 'LAND', 'LNOT',
|
||||
'LT', 'LE', 'GT', 'GE', 'EQ', 'NE',
|
||||
|
||||
# Assignment (=, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |=)
|
||||
'EQUALS', 'TIMESEQUAL', 'DIVEQUAL', 'MODEQUAL', 'PLUSEQUAL', 'MINUSEQUAL',
|
||||
'LSHIFTEQUAL','RSHIFTEQUAL', 'ANDEQUAL', 'XOREQUAL', 'OREQUAL',
|
||||
|
||||
# Increment/decrement (++,--)
|
||||
'INCREMENT', 'DECREMENT',
|
||||
|
||||
# Structure dereference (->)
|
||||
'ARROW',
|
||||
|
||||
# Ternary operator (?)
|
||||
'TERNARY',
|
||||
|
||||
# Delimeters ( ) [ ] { } , . ; :
|
||||
'LPAREN', 'RPAREN',
|
||||
'LBRACKET', 'RBRACKET',
|
||||
'LBRACE', 'RBRACE',
|
||||
'COMMA', 'PERIOD', 'SEMI', 'COLON',
|
||||
|
||||
# Ellipsis (...)
|
||||
'ELLIPSIS',
|
||||
]
|
||||
|
||||
# Operators
|
||||
t_PLUS = r'\+'
|
||||
t_MINUS = r'-'
|
||||
t_TIMES = r'\*'
|
||||
t_DIVIDE = r'/'
|
||||
t_MODULO = r'%'
|
||||
t_OR = r'\|'
|
||||
t_AND = r'&'
|
||||
t_NOT = r'~'
|
||||
t_XOR = r'\^'
|
||||
t_LSHIFT = r'<<'
|
||||
t_RSHIFT = r'>>'
|
||||
t_LOR = r'\|\|'
|
||||
t_LAND = r'&&'
|
||||
t_LNOT = r'!'
|
||||
t_LT = r'<'
|
||||
t_GT = r'>'
|
||||
t_LE = r'<='
|
||||
t_GE = r'>='
|
||||
t_EQ = r'=='
|
||||
t_NE = r'!='
|
||||
|
||||
# Assignment operators
|
||||
|
||||
t_EQUALS = r'='
|
||||
t_TIMESEQUAL = r'\*='
|
||||
t_DIVEQUAL = r'/='
|
||||
t_MODEQUAL = r'%='
|
||||
t_PLUSEQUAL = r'\+='
|
||||
t_MINUSEQUAL = r'-='
|
||||
t_LSHIFTEQUAL = r'<<='
|
||||
t_RSHIFTEQUAL = r'>>='
|
||||
t_ANDEQUAL = r'&='
|
||||
t_OREQUAL = r'\|='
|
||||
t_XOREQUAL = r'\^='
|
||||
|
||||
# Increment/decrement
|
||||
t_INCREMENT = r'\+\+'
|
||||
t_DECREMENT = r'--'
|
||||
|
||||
# ->
|
||||
t_ARROW = r'->'
|
||||
|
||||
# ?
|
||||
t_TERNARY = r'\?'
|
||||
|
||||
# Delimeters
|
||||
t_LPAREN = r'\('
|
||||
t_RPAREN = r'\)'
|
||||
t_LBRACKET = r'\['
|
||||
t_RBRACKET = r'\]'
|
||||
t_LBRACE = r'\{'
|
||||
t_RBRACE = r'\}'
|
||||
t_COMMA = r','
|
||||
t_PERIOD = r'\.'
|
||||
t_SEMI = r';'
|
||||
t_COLON = r':'
|
||||
t_ELLIPSIS = r'\.\.\.'
|
||||
|
||||
# Identifiers
|
||||
t_ID = r'[A-Za-z_][A-Za-z0-9_]*'
|
||||
|
||||
# Integer literal
|
||||
t_INTEGER = r'\d+([uU]|[lL]|[uU][lL]|[lL][uU])?'
|
||||
|
||||
# Floating literal
|
||||
t_FLOAT = r'((\d+)(\.\d+)(e(\+|-)?(\d+))? | (\d+)e(\+|-)?(\d+))([lL]|[fF])?'
|
||||
|
||||
# String literal
|
||||
t_STRING = r'\"([^\\\n]|(\\.))*?\"'
|
||||
|
||||
# Character constant 'c' or L'c'
|
||||
t_CHARACTER = r'(L)?\'([^\\\n]|(\\.))*?\''
|
||||
|
||||
# Comment (C-Style)
|
||||
def t_COMMENT(t):
|
||||
r'/\*(.|\n)*?\*/'
|
||||
t.lexer.lineno += t.value.count('\n')
|
||||
return t
|
||||
|
||||
# Comment (C++-Style)
|
||||
def t_CPPCOMMENT(t):
|
||||
r'//.*\n'
|
||||
t.lexer.lineno += 1
|
||||
return t
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,10 +0,0 @@
|
||||
[bdist_wheel]
|
||||
universal = 1
|
||||
|
||||
[metadata]
|
||||
description-file = README.md
|
||||
|
||||
[egg_info]
|
||||
tag_build =
|
||||
tag_date = 0
|
||||
|
||||
@@ -1,31 +0,0 @@
|
||||
try:
|
||||
from setuptools import setup
|
||||
except ImportError:
|
||||
from distutils.core import setup
|
||||
|
||||
setup(name = "ply",
|
||||
description="Python Lex & Yacc",
|
||||
long_description = """
|
||||
PLY is yet another implementation of lex and yacc for Python. Some notable
|
||||
features include the fact that its implemented entirely in Python and it
|
||||
uses LALR(1) parsing which is efficient and well suited for larger grammars.
|
||||
|
||||
PLY provides most of the standard lex/yacc features including support for empty
|
||||
productions, precedence rules, error recovery, and support for ambiguous grammars.
|
||||
|
||||
PLY is extremely easy to use and provides very extensive error checking.
|
||||
It is compatible with both Python 2 and Python 3.
|
||||
""",
|
||||
license="""BSD""",
|
||||
version = "3.11",
|
||||
author = "David Beazley",
|
||||
author_email = "dave@dabeaz.com",
|
||||
maintainer = "David Beazley",
|
||||
maintainer_email = "dave@dabeaz.com",
|
||||
url = "http://www.dabeaz.com/ply/",
|
||||
packages = ['ply'],
|
||||
classifiers = [
|
||||
'Programming Language :: Python :: 3',
|
||||
'Programming Language :: Python :: 2',
|
||||
]
|
||||
)
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,69 +0,0 @@
|
||||
# ply: ygen.py
|
||||
#
|
||||
# This is a support program that auto-generates different versions of the YACC parsing
|
||||
# function with different features removed for the purposes of performance.
|
||||
#
|
||||
# Users should edit the method LRParser.parsedebug() in yacc.py. The source code
|
||||
# for that method is then used to create the other methods. See the comments in
|
||||
# yacc.py for further details.
|
||||
|
||||
import os.path
|
||||
import shutil
|
||||
|
||||
def get_source_range(lines, tag):
|
||||
srclines = enumerate(lines)
|
||||
start_tag = '#--! %s-start' % tag
|
||||
end_tag = '#--! %s-end' % tag
|
||||
|
||||
for start_index, line in srclines:
|
||||
if line.strip().startswith(start_tag):
|
||||
break
|
||||
|
||||
for end_index, line in srclines:
|
||||
if line.strip().endswith(end_tag):
|
||||
break
|
||||
|
||||
return (start_index + 1, end_index)
|
||||
|
||||
def filter_section(lines, tag):
|
||||
filtered_lines = []
|
||||
include = True
|
||||
tag_text = '#--! %s' % tag
|
||||
for line in lines:
|
||||
if line.strip().startswith(tag_text):
|
||||
include = not include
|
||||
elif include:
|
||||
filtered_lines.append(line)
|
||||
return filtered_lines
|
||||
|
||||
def main():
|
||||
dirname = os.path.dirname(__file__)
|
||||
shutil.copy2(os.path.join(dirname, 'yacc.py'), os.path.join(dirname, 'yacc.py.bak'))
|
||||
with open(os.path.join(dirname, 'yacc.py'), 'r') as f:
|
||||
lines = f.readlines()
|
||||
|
||||
parse_start, parse_end = get_source_range(lines, 'parsedebug')
|
||||
parseopt_start, parseopt_end = get_source_range(lines, 'parseopt')
|
||||
parseopt_notrack_start, parseopt_notrack_end = get_source_range(lines, 'parseopt-notrack')
|
||||
|
||||
# Get the original source
|
||||
orig_lines = lines[parse_start:parse_end]
|
||||
|
||||
# Filter the DEBUG sections out
|
||||
parseopt_lines = filter_section(orig_lines, 'DEBUG')
|
||||
|
||||
# Filter the TRACKING sections out
|
||||
parseopt_notrack_lines = filter_section(parseopt_lines, 'TRACKING')
|
||||
|
||||
# Replace the parser source sections with updated versions
|
||||
lines[parseopt_notrack_start:parseopt_notrack_end] = parseopt_notrack_lines
|
||||
lines[parseopt_start:parseopt_end] = parseopt_lines
|
||||
|
||||
lines = [line.rstrip()+'\n' for line in lines]
|
||||
with open(os.path.join(dirname, 'yacc.py'), 'w') as f:
|
||||
f.writelines(lines)
|
||||
|
||||
print('Updated yacc.py')
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
Reference in New Issue
Block a user