37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
from smnp.ast.node.expression import ExpressionNode
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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 IntegerLiteralNode(ExpressionNode):
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def __init__(self, pos):
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super().__init__(pos)
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#TODO del self.children[1]
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# TODO: To Remove
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@classmethod
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def _parse(cls, input):
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return cls._literalParser()(input)
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@classmethod
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def _literalParser(cls):
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return Parser.oneOf(
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cls._negativeIntegerParser(),
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cls._positiveIntegerParser()
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)
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@classmethod
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def _negativeIntegerParser(cls):
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def createNode(minus, integer):
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return IntegerLiteralNode.withValue(-integer.value, minus.pos)
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return Parser.allOf(
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Parser.terminalParser(TokenType.MINUS),
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Parser.doAssert(cls._positiveIntegerParser(), "integer"),
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createNode=createNode
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)
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@classmethod
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def _positiveIntegerParser(cls):
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return Parser.terminalParser(TokenType.INTEGER, lambda val, pos: IntegerLiteralNode.withValue(int(val), pos)) |