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fix(parser): handle extra tokens in Midas parser

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This commit is contained in:
Louis Heredero
2026-05-18 18:43:35 +02:00
parent 6922e49cdf
commit 7a831a1afc
1 changed files with 12 additions and 4 deletions
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16
parser/midas.py
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@@ -62,6 +62,7 @@ class MidasParser(Parser):
return self.op_declaration() return self.op_declaration()
if self.match(TokenType.CONSTRAINT): if self.match(TokenType.CONSTRAINT):
return self.constraint_declaration() return self.constraint_declaration()
raise self.error(self.peek(), "Unexpected token")
except ParsingError: except ParsingError:
self.synchronize() self.synchronize()
return None return None
@@ -111,7 +112,7 @@ class MidasParser(Parser):
Returns: Returns:
ConstraintExpr: the parsed type constraint expression ConstraintExpr: the parsed type constraint expression
""" """
left: Expr = self.constraint_value() left: Expr = self.constraint_value()
op: Token = self.constraint_operator() op: Token = self.constraint_operator()
right: Expr = self.constraint_value() right: Expr = self.constraint_value()
@@ -129,14 +130,21 @@ class MidasParser(Parser):
return LiteralExpr(True) return LiteralExpr(True)
if self.match(TokenType.NONE): if self.match(TokenType.NONE):
return LiteralExpr(None) return LiteralExpr(None)
if self.match(TokenType.NUMBER): if self.match(TokenType.NUMBER):
return LiteralExpr(self.previous().value) return LiteralExpr(self.previous().value)
raise self.error(self.peek(), "Expected literal") raise self.error(self.peek(), "Expected literal")
def constraint_operator(self) -> Token: def constraint_operator(self) -> Token:
if self.match(TokenType.LESS, TokenType.LESS_EQUAL, TokenType.GREATER, TokenType.GREATER_EQUAL, TokenType.EQUAL_EQUAL, TokenType.BANG_EQUAL): if self.match(
TokenType.LESS,
TokenType.LESS_EQUAL,
TokenType.GREATER,
TokenType.GREATER_EQUAL,
TokenType.EQUAL_EQUAL,
TokenType.BANG_EQUAL,
):
return self.previous() return self.previous()
raise self.error(self.peek(), "Expected constraint operator") raise self.error(self.peek(), "Expected constraint operator")