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134 lines
3.1 KiB
Python
134 lines
3.1 KiB
Python
5 years ago
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# ----------------------------------------------------------------------
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# ctokens.py
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#
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# Token specifications for symbols in ANSI C and C++. This file is
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# meant to be used as a library in other tokenizers.
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# ----------------------------------------------------------------------
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# Reserved words
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tokens = [
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# Literals (identifier, integer constant, float constant, string constant, char const)
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'ID', 'TYPEID', 'INTEGER', 'FLOAT', 'STRING', 'CHARACTER',
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# Operators (+,-,*,/,%,|,&,~,^,<<,>>, ||, &&, !, <, <=, >, >=, ==, !=)
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'PLUS', 'MINUS', 'TIMES', 'DIVIDE', 'MODULO',
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'OR', 'AND', 'NOT', 'XOR', 'LSHIFT', 'RSHIFT',
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'LOR', 'LAND', 'LNOT',
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'LT', 'LE', 'GT', 'GE', 'EQ', 'NE',
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# Assignment (=, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |=)
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'EQUALS', 'TIMESEQUAL', 'DIVEQUAL', 'MODEQUAL', 'PLUSEQUAL', 'MINUSEQUAL',
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'LSHIFTEQUAL','RSHIFTEQUAL', 'ANDEQUAL', 'XOREQUAL', 'OREQUAL',
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# Increment/decrement (++,--)
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'INCREMENT', 'DECREMENT',
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# Structure dereference (->)
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'ARROW',
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# Ternary operator (?)
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'TERNARY',
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# Delimeters ( ) [ ] { } , . ; :
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'LPAREN', 'RPAREN',
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'LBRACKET', 'RBRACKET',
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'LBRACE', 'RBRACE',
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'COMMA', 'PERIOD', 'SEMI', 'COLON',
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# Ellipsis (...)
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'ELLIPSIS',
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]
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# Operators
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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_MODULO = r'%'
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t_OR = r'\|'
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t_AND = r'&'
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t_NOT = r'~'
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t_XOR = r'\^'
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t_LSHIFT = r'<<'
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t_RSHIFT = r'>>'
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t_LOR = r'\|\|'
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t_LAND = r'&&'
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t_LNOT = r'!'
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t_LT = r'<'
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t_GT = r'>'
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t_LE = r'<='
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t_GE = r'>='
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t_EQ = r'=='
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t_NE = r'!='
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# Assignment operators
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t_EQUALS = r'='
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t_TIMESEQUAL = r'\*='
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t_DIVEQUAL = r'/='
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t_MODEQUAL = r'%='
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t_PLUSEQUAL = r'\+='
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t_MINUSEQUAL = r'-='
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t_LSHIFTEQUAL = r'<<='
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t_RSHIFTEQUAL = r'>>='
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t_ANDEQUAL = r'&='
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t_OREQUAL = r'\|='
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t_XOREQUAL = r'\^='
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# Increment/decrement
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t_INCREMENT = r'\+\+'
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t_DECREMENT = r'--'
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# ->
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t_ARROW = r'->'
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# ?
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t_TERNARY = r'\?'
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# Delimeters
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t_LPAREN = r'\('
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t_RPAREN = r'\)'
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t_LBRACKET = r'\['
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t_RBRACKET = r'\]'
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t_LBRACE = r'\{'
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t_RBRACE = r'\}'
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t_COMMA = r','
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t_PERIOD = r'\.'
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t_SEMI = r';'
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t_COLON = r':'
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t_ELLIPSIS = r'\.\.\.'
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# Identifiers
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t_ID = r'[A-Za-z_][A-Za-z0-9_]*'
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# Integer literal
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t_INTEGER = r'\d+([uU]|[lL]|[uU][lL]|[lL][uU])?'
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# Floating literal
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t_FLOAT = r'((\d+)(\.\d+)(e(\+|-)?(\d+))? | (\d+)e(\+|-)?(\d+))([lL]|[fF])?'
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# String literal
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t_STRING = r'\"([^\\\n]|(\\.))*?\"'
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# Character constant 'c' or L'c'
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t_CHARACTER = r'(L)?\'([^\\\n]|(\\.))*?\''
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# Comment (C-Style)
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def t_COMMENT(t):
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r'/\*(.|\n)*?\*/'
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t.lexer.lineno += t.value.count('\n')
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return t
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# Comment (C++-Style)
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def t_CPPCOMMENT(t):
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r'//.*\n'
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t.lexer.lineno += 1
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return t
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