57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
from smnp.ast.node.expression import ExpressionNode
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from smnp.ast.node.none import NoneNode
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from smnp.ast.parser import Parser
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from smnp.error.syntax import SyntaxException
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from smnp.token.type import TokenType
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class AccessNode(ExpressionNode):
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def __init__(self, pos):
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super().__init__(pos)
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self.children = [ NoneNode(), NoneNode() ]
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@property
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def left(self):
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return self[0]
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@left.setter
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def left(self, value):
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self[0] = value
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@property
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def right(self):
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return self[1]
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@right.setter
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def right(self, value):
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self[1] = value
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@classmethod
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def accessParser(cls):
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def createNode(left, operator, right):
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node = AccessNode(right.pos)
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node.left = left
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node.right = right
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return node
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return Parser.leftAssociativeOperatorParser(
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cls._accessLhs(),
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TokenType.DOT,
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cls._accessRhs(),
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createNode=createNode
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)
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@classmethod
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def _accessLhs(cls):
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raise RuntimeError(f"_accessLhs() is not implemented in {cls.__name__} class")
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@staticmethod
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def _accessRhs():
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from smnp.ast.node.identifier import IdentifierNode
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return Parser.oneOf(
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IdentifierNode.functionCallParser(),
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IdentifierNode.identifierParser(),
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exception=lambda input: SyntaxException(f"Expected property name or method call, found '{input.current().rawValue}'", input.currentPos())
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)
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