103 lines
2.8 KiB
Python
103 lines
2.8 KiB
Python
"""
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GTSAM Copyright 2010-2020, Georgia Tech Research Corporation,
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Atlanta, Georgia 30332-0415
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All Rights Reserved
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See LICENSE for the license information
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All the token definitions.
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Author: Duy Nguyen Ta, Fan Jiang, Matthew Sklar, Varun Agrawal, and Frank Dellaert
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"""
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from pyparsing import (Keyword, Literal, Or, QuotedString, Suppress, Word,
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alphanums, alphas, delimitedList, nums,
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pyparsing_common)
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# rule for identifiers (e.g. variable names)
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IDENT = Word(alphas + '_', alphanums + '_') ^ Word(nums)
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RAW_POINTER, SHARED_POINTER, REF = map(Literal, "@*&")
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LPAREN, RPAREN, LBRACE, RBRACE, COLON, SEMI_COLON = map(Suppress, "(){}:;")
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LOPBRACK, ROPBRACK, COMMA, EQUAL = map(Suppress, "<>,=")
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# Encapsulating type for numbers, and single and double quoted strings.
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# The pyparsing_common utilities ensure correct coversion to the corresponding type.
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# E.g. pyparsing_common.number will convert 3.1415 to a float type.
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NUMBER_OR_STRING = (pyparsing_common.number ^ QuotedString('"') ^ QuotedString("'"))
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# A python tuple, e.g. (1, 9, "random", 3.1415)
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TUPLE = (LPAREN + delimitedList(NUMBER_OR_STRING) + RPAREN)
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# Default argument passed to functions/methods.
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DEFAULT_ARG = (NUMBER_OR_STRING ^ pyparsing_common.identifier ^ TUPLE)
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CONST, VIRTUAL, CLASS, STATIC, PAIR, TEMPLATE, TYPEDEF, INCLUDE = map(
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Keyword,
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[
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"const",
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"virtual",
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"class",
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"static",
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"pair",
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"template",
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"typedef",
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"#include",
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],
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)
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ENUM = Keyword("enum") ^ Keyword("enum class") ^ Keyword("enum struct")
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NAMESPACE = Keyword("namespace")
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BASIS_TYPES = map(
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Keyword,
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[
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"void",
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"bool",
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"unsigned char",
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"char",
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"int",
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"size_t",
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"double",
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"float",
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],
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)
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OPERATOR = Or(
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map(
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Literal,
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[
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'+', # __add__, __pos__
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'-', # __sub__, __neg__
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'*', # __mul__
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'/', # __truediv__
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'%', # __mod__
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'^', # __xor__
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'&', # __and__
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'|', # __or__
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# '~', # __invert__
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'+=', # __iadd__
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'-=', # __isub__
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'*=', # __imul__
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'/=', # __itruediv__
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'%=', # __imod__
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'^=', # __ixor__
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'&=', # __iand__
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'|=', # __ior__
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'<<', # __lshift__
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'<<=', # __ilshift__
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'>>', # __rshift__
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'>>=', # __irshift__
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'==', # __eq__
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'!=', # __ne__
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'<', # __lt__
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'>', # __gt__
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'<=', # __le__
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'>=', # __ge__
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# '!', # Use `not` in python
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# '&&', # Use `and` in python
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# '||', # Use `or` in python
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'()', # __call__
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'[]', # __getitem__
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],
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))
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