38 lines
927 B
Python
38 lines
927 B
Python
from smnp.ast.node.atom import AtomParser
|
|
from smnp.ast.node.operator import BinaryOperator, UnaryOperator, Operator
|
|
from smnp.ast.node.valuable import Valuable
|
|
from smnp.ast.parser import Parser
|
|
from smnp.token.type import TokenType
|
|
|
|
|
|
class Unit(Valuable):
|
|
pass
|
|
|
|
|
|
class MinusOperator(UnaryOperator):
|
|
pass
|
|
|
|
|
|
def UnitParser(input):
|
|
minusOperator = Parser.allOf(
|
|
Parser.terminal(TokenType.MINUS, createNode=Operator.withValue),
|
|
Parser.doAssert(AtomParser, "atom"),
|
|
createNode=MinusOperator.withValues,
|
|
name="minus"
|
|
)
|
|
|
|
atom2 = Parser.oneOf(
|
|
minusOperator,
|
|
AtomParser,
|
|
name="atom2"
|
|
)
|
|
|
|
return Parser.leftAssociativeOperatorParser(
|
|
atom2,
|
|
[TokenType.DOT],
|
|
Parser.doAssert(atom2, "atom"),
|
|
createNode=lambda left, op, right: Unit.withValue(BinaryOperator.withValues(left, op, right)),
|
|
name="unit"
|
|
)(input)
|
|
|