File: InterfaceLexer.py

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### $ANTLR 2.7.7 (2006-11-01): "interface.g" -> "InterfaceLexer.py"$
### import antlr and other modules ..
import sys
import antlr

### header action >>> 
#
# [The "BSD licence"]
# Copyright (c) 2003-2004 Terence Parr
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. 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.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
# 


import sys
import traceback

from stringtemplate3.language.FormalArgument import FormalArgument
### header action <<< 
### preamble action >>> 

### preamble action <<< 
### >>>The Literals<<<
literals = {}
literals[u"interface"] = 4
literals[u"optional"] = 7


### import antlr.Token 
from antlr import Token
### >>>The Known Token Types <<<
SKIP                = antlr.SKIP
INVALID_TYPE        = antlr.INVALID_TYPE
EOF_TYPE            = antlr.EOF_TYPE
EOF                 = antlr.EOF
NULL_TREE_LOOKAHEAD = antlr.NULL_TREE_LOOKAHEAD
MIN_USER_TYPE       = antlr.MIN_USER_TYPE
LITERAL_interface = 4
ID = 5
SEMI = 6
LITERAL_optional = 7
LPAREN = 8
RPAREN = 9
COMMA = 10
COLON = 11
SL_COMMENT = 12
ML_COMMENT = 13
WS = 14

class Lexer(antlr.CharScanner) :
    ### user action >>>
    ### user action <<<
    def __init__(self, *argv, **kwargs) :
        antlr.CharScanner.__init__(self, *argv, **kwargs)
        self.caseSensitiveLiterals = True
        self.setCaseSensitive(True)
        self.literals = literals
    
    def nextToken(self):
        while True:
            try: ### try again ..
                while True:
                    _token = None
                    _ttype = INVALID_TYPE
                    self.resetText()
                    try: ## for char stream error handling
                        try: ##for lexical error handling
                            la1 = self.LA(1)
                            if False:
                                pass
                            elif la1 and la1 in u'ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz':
                                pass
                                self.mID(True)
                                theRetToken = self._returnToken
                            elif la1 and la1 in u'(':
                                pass
                                self.mLPAREN(True)
                                theRetToken = self._returnToken
                            elif la1 and la1 in u')':
                                pass
                                self.mRPAREN(True)
                                theRetToken = self._returnToken
                            elif la1 and la1 in u',':
                                pass
                                self.mCOMMA(True)
                                theRetToken = self._returnToken
                            elif la1 and la1 in u';':
                                pass
                                self.mSEMI(True)
                                theRetToken = self._returnToken
                            elif la1 and la1 in u':':
                                pass
                                self.mCOLON(True)
                                theRetToken = self._returnToken
                            elif la1 and la1 in u'\t\n\u000c\r ':
                                pass
                                self.mWS(True)
                                theRetToken = self._returnToken
                            else:
                                if (self.LA(1)==u'/') and (self.LA(2)==u'/'):
                                    pass
                                    self.mSL_COMMENT(True)
                                    theRetToken = self._returnToken
                                elif (self.LA(1)==u'/') and (self.LA(2)==u'*'):
                                    pass
                                    self.mML_COMMENT(True)
                                    theRetToken = self._returnToken
                                else:
                                    self.default(self.LA(1))
                                
                            if not self._returnToken:
                                raise antlr.TryAgain ### found SKIP token
                            ### option { testLiterals=true } 
                            self.testForLiteral(self._returnToken)
                            ### return token to caller
                            return self._returnToken
                        ### handle lexical errors ....
                        except antlr.RecognitionException as e:
                            raise antlr.TokenStreamRecognitionException(e)
                    ### handle char stream errors ...
                    except antlr.CharStreamException as cse:
                        if isinstance(cse, antlr.CharStreamIOException):
                            raise antlr.TokenStreamIOException(cse.io)
                        else:
                            raise antlr.TokenStreamException(str(cse))
            except antlr.TryAgain:
                pass
        
    def mID(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = ID
        _saveIndex = 0
        pass
        la1 = self.LA(1)
        if False:
            pass
        elif la1 and la1 in u'abcdefghijklmnopqrstuvwxyz':
            pass
            self.matchRange(u'a', u'z')
        elif la1 and la1 in u'ABCDEFGHIJKLMNOPQRSTUVWXYZ':
            pass
            self.matchRange(u'A', u'Z')
        elif la1 and la1 in u'_':
            pass
            self.match('_')
        else:
                self.raise_NoViableAlt(self.LA(1))
            
        while True:
            la1 = self.LA(1)
            if False:
                pass
            elif la1 and la1 in u'abcdefghijklmnopqrstuvwxyz':
                pass
                self.matchRange(u'a', u'z')
            elif la1 and la1 in u'ABCDEFGHIJKLMNOPQRSTUVWXYZ':
                pass
                self.matchRange(u'A', u'Z')
            elif la1 and la1 in u'0123456789':
                pass
                self.matchRange(u'0', u'9')
            elif la1 and la1 in u'-':
                pass
                self.match('-')
            elif la1 and la1 in u'_':
                pass
                self.match('_')
            else:
                    break
                
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    def mLPAREN(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = LPAREN
        _saveIndex = 0
        pass
        self.match('(')
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    def mRPAREN(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = RPAREN
        _saveIndex = 0
        pass
        self.match(')')
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    def mCOMMA(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = COMMA
        _saveIndex = 0
        pass
        self.match(',')
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    def mSEMI(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = SEMI
        _saveIndex = 0
        pass
        self.match(';')
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    def mCOLON(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = COLON
        _saveIndex = 0
        pass
        self.match(':')
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    def mSL_COMMENT(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = SL_COMMENT
        _saveIndex = 0
        pass
        self.match("//")
        while True:
            if (_tokenSet_0.member(self.LA(1))):
                pass
                self.match(_tokenSet_0)
            else:
                break
            
        if (self.LA(1)==u'\n' or self.LA(1)==u'\r'):
            pass
            la1 = self.LA(1)
            if False:
                pass
            elif la1 and la1 in u'\r':
                pass
                self.match('\r')
            elif la1 and la1 in u'\n':
                pass
            else:
                    self.raise_NoViableAlt(self.LA(1))
                
            self.match('\n')
        else: ## <m4>
                pass
            
        _ttype = Token.SKIP; 
        self.newline();
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    def mML_COMMENT(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = ML_COMMENT
        _saveIndex = 0
        pass
        self.match("/*")
        while True:
            ###  nongreedy exit test
            if ((self.LA(1)==u'*') and (self.LA(2)==u'/')):
                break
            if (self.LA(1)==u'\n' or self.LA(1)==u'\r') and ((self.LA(2) >= u'\u0000' and self.LA(2) <= u'\ufffe')):
                pass
                la1 = self.LA(1)
                if False:
                    pass
                elif la1 and la1 in u'\r':
                    pass
                    self.match('\r')
                elif la1 and la1 in u'\n':
                    pass
                else:
                        self.raise_NoViableAlt(self.LA(1))
                    
                self.match('\n')
                self.newline();
            elif ((self.LA(1) >= u'\u0000' and self.LA(1) <= u'\ufffe')) and ((self.LA(2) >= u'\u0000' and self.LA(2) <= u'\ufffe')):
                pass
                self.matchNot(antlr.EOF_CHAR)
            else:
                break
            
        self.match("*/")
        _ttype = Token.SKIP;
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    def mWS(self, _createToken):    
        _ttype = 0
        _token = None
        _begin = self.text.length()
        _ttype = WS
        _saveIndex = 0
        pass
        _cnt32= 0
        while True:
            la1 = self.LA(1)
            if False:
                pass
            elif la1 and la1 in u' ':
                pass
                self.match(' ')
            elif la1 and la1 in u'\t':
                pass
                self.match('\t')
            elif la1 and la1 in u'\u000c':
                pass
                self.match('\f')
            elif la1 and la1 in u'\n\r':
                pass
                la1 = self.LA(1)
                if False:
                    pass
                elif la1 and la1 in u'\r':
                    pass
                    self.match('\r')
                elif la1 and la1 in u'\n':
                    pass
                else:
                        self.raise_NoViableAlt(self.LA(1))
                    
                self.match('\n')
                self.newline();
            else:
                    break
                
            _cnt32 += 1
        if _cnt32 < 1:
            self.raise_NoViableAlt(self.LA(1))
        _ttype = Token.SKIP;
        self.set_return_token(_createToken, _token, _ttype, _begin)
    
    

### generate bit set
def mk_tokenSet_0(): 
    data = [0] * 2048 ### init list
    data[0] =-9217
    for x in range(1, 1023):
        data[x] = -1
    data[1023] =9223372036854775807
    return data
_tokenSet_0 = antlr.BitSet(mk_tokenSet_0())
    
### __main__ header action >>> 
if __name__ == '__main__' :
    import sys
    import antlr
    import InterfaceLexer
    
    ### create lexer - shall read from stdin
    try:
        for token in InterfaceLexer.Lexer():
            print(token)
            
    except antlr.TokenStreamException as e:
        print("error: exception caught while lexing")
### __main__ header action <<<