44 lines
996 B
Python
44 lines
996 B
Python
from smnp.ast.node.atom import AtomParser
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from smnp.ast.node.list import ListParser
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from smnp.ast.node.map import MapParser
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from smnp.ast.node.operator import BinaryOperator, UnaryOperator, Operator
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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 Chain(Valuable):
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pass
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class MinusOperator(UnaryOperator):
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pass
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def ChainParser(input):
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chain1 = Parser.oneOf(
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ListParser,
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MapParser,
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AtomParser,
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)
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minusOperator = Parser.allOf(
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Parser.terminal(TokenType.MINUS, createNode=Operator.withValue),
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chain1,
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createNode=MinusOperator.withValues,
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name="minus"
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)
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chain2 = Parser.oneOf(
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minusOperator,
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chain1
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)
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return Parser.leftAssociativeOperatorParser(
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chain2,
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[TokenType.DOT],
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chain2,
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lambda left, op, right: Chain.withValue(BinaryOperator.withValues(left, op, right))
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)(input)
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