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Make structure instantiation StructType.{args...} instead of StructType{args...}

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This commit is contained in:
germax26 2024-10-01 12:13:27 +10:00
parent f3ed26f131
commit e48d50f1e6
Signed by: germax26
SSH Key Fingerprint: SHA256:N3w+8798IMWBt7SYH8G1C0iJlIa2HIIcRCXwILT5FvM
2 changed files with 26 additions and 17 deletions
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39
ppp_parser.py
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@ -130,26 +130,17 @@ def parse_primary(lexer: Lexer) -> Expression:
else:
base_expression = Variable(parse_identifier(lexer))
while (token := lexer.take_tokens(SymbolToken(Symbol.Open), SymbolToken(Symbol.OpenSquare), SymbolToken(Symbol.Dot), SymbolToken(Symbol.OpenCurly))):
while (token := lexer.take_tokens(SymbolToken(Symbol.Open), SymbolToken(Symbol.OpenSquare), SymbolToken(Symbol.Dot))):
match token.contents:
case SymbolToken(symbol):
match symbol:
case Symbol.Dot:
field = parse_identifier(lexer)
next_token = lexer.next_token()
match next_token.contents:
case IdentifierToken(identifier=field):
base_expression = FieldAccess(base_expression, field)
case Symbol.Open:
if lexer.take_token(SymbolToken(Symbol.Close)):
base_expression = FunctionCall(base_expression, [])
else:
arguments: List[Expression] = [parse_expression(lexer)]
while lexer.take_token(SymbolToken(Symbol.Comma)):
arguments.append(parse_expression(lexer))
lexer.assert_token(SymbolToken(Symbol.Close))
base_expression = FunctionCall(base_expression, arguments)
case Symbol.OpenSquare:
index = parse_expression(lexer)
lexer.assert_token(SymbolToken(Symbol.CloseSquare))
base_expression = ArrayAccess(base_expression, index)
case SymbolToken(symbol=symbol):
match symbol:
case Symbol.OpenCurly:
if lexer.take_token(SymbolToken(Symbol.CloseCurly)):
base_expression = StructInstantiation(base_expression, [])
@ -163,6 +154,23 @@ def parse_primary(lexer: Lexer) -> Expression:
while lexer.take_token(SymbolToken(Symbol.Comma)): struct_arguments.append(parse_argument())
lexer.assert_token(SymbolToken(Symbol.CloseCurly))
base_expression = StructInstantiation(base_expression, struct_arguments)
case _:
raise SyntaxError(f"{next_token.loc}: Unexpected symbol: {repr(str(symbol))}")
case _:
raise SyntaxError(f"{next_token.loc}: Unexpected: {next_token.contents}")
case Symbol.Open:
if lexer.take_token(SymbolToken(Symbol.Close)):
base_expression = FunctionCall(base_expression, [])
else:
arguments: List[Expression] = [parse_expression(lexer)]
while lexer.take_token(SymbolToken(Symbol.Comma)):
arguments.append(parse_expression(lexer))
lexer.assert_token(SymbolToken(Symbol.Close))
base_expression = FunctionCall(base_expression, arguments)
case Symbol.OpenSquare:
index = parse_expression(lexer)
lexer.assert_token(SymbolToken(Symbol.CloseSquare))
base_expression = ArrayAccess(base_expression, index)
case _: assert False, ("Unimplemented", symbol)
case _: assert False, ("Unimplemented", token)
@ -301,7 +309,6 @@ def parse_statement(lexer: Lexer) -> Statement:
return DoWhileStatement(body, condition)
elif lexer.take_token(KeywordToken(Keyword.Match)):
value = parse_expression(lexer)
lexer.assert_token(KeywordToken(Keyword.In)) # to prevent it from parsing it as a struct instantiation
lexer.assert_token(SymbolToken(Symbol.OpenCurly))
cases: List[Tuple[Expression, Statement]] = []

2
ppp_tokens.py
View File

@ -62,6 +62,8 @@ class Symbol(Enum):
Tilde = '~'
Carot = '^'
def __str__(self) -> str: return self._value_
@dataclass
class KeywordToken:
keyword: Keyword