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diff --git a/third_party/python/ply/ply/cpp.py b/third_party/python/ply/ply/cpp.py
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+# -----------------------------------------------------------------------------
+# cpp.py
+#
+# Author: David Beazley (http://www.dabeaz.com)
+# Copyright (C) 2007
+# All rights reserved
+#
+# This module implements an ANSI-C style lexical preprocessor for PLY.
+# -----------------------------------------------------------------------------
+from __future__ import generators
+
+import sys
+
+# Some Python 3 compatibility shims
+if sys.version_info.major < 3:
+ STRING_TYPES = (str, unicode)
+else:
+ STRING_TYPES = str
+ xrange = range
+
+# -----------------------------------------------------------------------------
+# Default preprocessor lexer definitions. These tokens are enough to get
+# a basic preprocessor working. Other modules may import these if they want
+# -----------------------------------------------------------------------------
+
+tokens = (
+ 'CPP_ID','CPP_INTEGER', 'CPP_FLOAT', 'CPP_STRING', 'CPP_CHAR', 'CPP_WS', 'CPP_COMMENT1', 'CPP_COMMENT2', 'CPP_POUND','CPP_DPOUND'
+)
+
+literals = "+-*/%|&~^<>=!?()[]{}.,;:\\\'\""
+
+# Whitespace
+def t_CPP_WS(t):
+ r'\s+'
+ t.lexer.lineno += t.value.count("\n")
+ return t
+
+t_CPP_POUND = r'\#'
+t_CPP_DPOUND = r'\#\#'
+
+# Identifier
+t_CPP_ID = r'[A-Za-z_][\w_]*'
+
+# Integer literal
+def CPP_INTEGER(t):
+ r'(((((0x)|(0X))[0-9a-fA-F]+)|(\d+))([uU][lL]|[lL][uU]|[uU]|[lL])?)'
+ return t
+
+t_CPP_INTEGER = CPP_INTEGER
+
+# Floating literal
+t_CPP_FLOAT = r'((\d+)(\.\d+)(e(\+|-)?(\d+))? | (\d+)e(\+|-)?(\d+))([lL]|[fF])?'
+
+# String literal
+def t_CPP_STRING(t):
+ r'\"([^\\\n]|(\\(.|\n)))*?\"'
+ t.lexer.lineno += t.value.count("\n")
+ return t
+
+# Character constant 'c' or L'c'
+def t_CPP_CHAR(t):
+ r'(L)?\'([^\\\n]|(\\(.|\n)))*?\''
+ t.lexer.lineno += t.value.count("\n")
+ return t
+
+# Comment
+def t_CPP_COMMENT1(t):
+ r'(/\*(.|\n)*?\*/)'
+ ncr = t.value.count("\n")
+ t.lexer.lineno += ncr
+ # replace with one space or a number of '\n'
+ t.type = 'CPP_WS'; t.value = '\n' * ncr if ncr else ' '
+ return t
+
+# Line comment
+def t_CPP_COMMENT2(t):
+ r'(//.*?(\n|$))'
+ # replace with '/n'
+ t.type = 'CPP_WS'; t.value = '\n'
+ return t
+
+def t_error(t):
+ t.type = t.value[0]
+ t.value = t.value[0]
+ t.lexer.skip(1)
+ 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]
+ continue
+ elif ((i+1) < len(macro.value) and macro.value[i+1].value == '##'):
+ macro.patch.append(('c',argnum,i))
+ 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 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)
+ 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)
+
+
+
+
+
+
+
+
+
+
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 10:32:05 +0000