31 lines
891 B
Python
31 lines
891 B
Python
from smnp.ast.node.chain import ChainParser
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from smnp.ast.node.operator import BinaryOperator
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from smnp.ast.node.valuable import Valuable
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from smnp.ast.parser import Parser
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from smnp.token.type import TokenType
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class Factor(Valuable):
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pass
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powerFactor = Parser.leftAssociativeOperatorParser(ChainParser, [TokenType.DOUBLE_ASTERISK], ChainParser,
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lambda left, op, right: Factor.withValue(BinaryOperator.withValues(left, op, right)))
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def exprFactor():
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from smnp.ast.node.expression import ExpressionParser
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return Parser.allOf(
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Parser.terminalParser(TokenType.OPEN_PAREN),
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ExpressionParser,
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Parser.terminalParser(TokenType.CLOSE_PAREN),
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createNode=lambda open, expr, close: expr
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)
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def FactorParser(input):
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return Parser.oneOf(
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powerFactor,
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exprFactor()
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)(input)
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