104 lines
2.7 KiB
Python
104 lines
2.7 KiB
Python
from smnp.ast.node.chain import ChainParser
|
|
from smnp.ast.node.iterable import abstractIterableParser
|
|
from smnp.ast.node.model import Node
|
|
from smnp.ast.node.none import NoneNode
|
|
from smnp.ast.node.operator import BinaryOperator, Operator, UnaryOperator
|
|
from smnp.ast.node.valuable import Valuable
|
|
from smnp.ast.parser import Parser
|
|
from smnp.token.type import TokenType
|
|
|
|
|
|
class Factor(Valuable):
|
|
pass
|
|
|
|
|
|
class NotOperator(UnaryOperator):
|
|
pass
|
|
|
|
|
|
class Loop(BinaryOperator):
|
|
def __init__(self, pos):
|
|
super().__init__(pos)
|
|
self.children.append(NoneNode())
|
|
|
|
@property
|
|
def parameters(self):
|
|
return self[3]
|
|
|
|
@parameters.setter
|
|
def parameters(self, value):
|
|
self[3] = value
|
|
|
|
@classmethod
|
|
def loop(cls, left, parameters, operator, right):
|
|
node = cls(left.pos)
|
|
node.left = left
|
|
node.parameters = parameters
|
|
node.operator = operator
|
|
node.right = right
|
|
return node
|
|
|
|
|
|
class LoopParameters(Node):
|
|
pass
|
|
|
|
|
|
def FactorParser(input):
|
|
from smnp.ast.node.expression import ExpressionParser
|
|
from smnp.ast.node.statement import StatementParser
|
|
from smnp.ast.node.identifier import IdentifierLiteralParser
|
|
|
|
powerFactor = Parser.leftAssociativeOperatorParser(
|
|
ChainParser,
|
|
[TokenType.DOUBLE_ASTERISK],
|
|
ChainParser,
|
|
lambda left, op, right: Factor.withValue(BinaryOperator.withValues(left, op, right)),
|
|
name="power operator"
|
|
)
|
|
|
|
exprFactor = Parser.allOf(
|
|
Parser.terminal(TokenType.OPEN_PAREN),
|
|
ExpressionParser,
|
|
Parser.terminal(TokenType.CLOSE_PAREN),
|
|
createNode=lambda open, expr, close: expr,
|
|
name="grouping parentheses"
|
|
)
|
|
|
|
factorParser = Parser.oneOf(
|
|
powerFactor,
|
|
exprFactor,
|
|
name="basic factor"
|
|
)
|
|
|
|
notOperator = Parser.allOf(
|
|
Parser.terminal(TokenType.NOT, Operator.withValue),
|
|
factorParser,
|
|
createNode=NotOperator.withValues,
|
|
name="not"
|
|
)
|
|
|
|
loopParameters = Parser.allOf(
|
|
Parser.terminal(TokenType.AS),
|
|
Parser.oneOf(
|
|
Parser.wrap(IdentifierLiteralParser, lambda id: LoopParameters.withChildren([id], id.pos)),
|
|
abstractIterableParser(LoopParameters, TokenType.OPEN_PAREN, TokenType.CLOSE_PAREN, IdentifierLiteralParser)
|
|
),
|
|
createNode=lambda asKeyword, parameters: parameters,
|
|
name="loop parameters"
|
|
)
|
|
|
|
loopFactor = Parser.allOf(
|
|
factorParser,
|
|
Parser.optional(loopParameters),
|
|
Parser.terminal(TokenType.DASH, createNode=Operator.withValue),
|
|
StatementParser,
|
|
createNode=Loop.loop,
|
|
name="dash-loop"
|
|
)
|
|
|
|
return Parser.oneOf(
|
|
loopFactor,
|
|
notOperator,
|
|
factorParser
|
|
)(input)
|