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feat: Implement try-except error handling

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Alvin
2025-07-22 19:59:37 +02:00
parent d5d3b9f421
commit c5c77ef775
4 changed files with 71 additions and 12 deletions
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49
src/parser.py
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@@ -81,17 +81,10 @@ class BreakStatement(AST):
class ContinueStatement(AST):
pass
class ForStatement(AST):
def __init__(self, var_name, iterable, body):
self.var_name = var_name
self.iterable = iterable
self.body = body
class BreakStatement(AST):
pass
class ContinueStatement(AST):
pass
class TryExceptStatement(AST):
def __init__(self, try_block, except_block):
self.try_block = try_block
self.except_block = except_block
class FunctionDefinition(AST):
def __init__(self, name, parameters, body):
@@ -192,6 +185,9 @@ class Parser:
self.consume('CONTINUE')
return ContinueStatement()
if token.type == 'TRY':
return self.parse_try_except_statement()
raise Exception(f"Invalid statement starting with token {token.type}")
def parse_print_statement(self):
@@ -316,12 +312,18 @@ class Parser:
if token.type == 'INTEGER':
self.consume('INTEGER')
return Number(token)
elif token.type == 'FLOAT':
self.consume('FLOAT')
return Number(token) # Using Number AST for both int and float for now
elif token.type == 'STRING':
self.consume('STRING')
return String(token)
elif token.type == 'KAWAII' or token.type == 'CRINGE':
self.consume(token.type)
return Boolean(token)
elif token.type == 'NULL':
self.consume('NULL')
return Null()
elif token.type == 'ID':
# Consume the ID token first
self.consume('ID')
@@ -332,7 +334,7 @@ class Parser:
return self.parse_function_call(token)
elif next_token.type == 'DOT':
# It's a property access
return self.parse_property_access(Variable(token))
return self.parse_property_access(Variable(token)) # Pass Variable node as target
elif next_token.type == 'LBRACKET':
# It's an index access
return self.parse_index_access(Variable(token))
@@ -465,3 +467,26 @@ class Parser:
property_name_token = self.get_current_token()
self.consume('ID')
return PropertyAccess(target_node, property_name_token.value)
def parse_try_except_statement(self):
self.consume('TRY')
self.consume('FEMBOYCORE')
try_block_statements = []
while self.get_current_token().type != 'PERIODT':
if self.get_current_token().type == 'EOF':
raise Exception("Unterminated try block: Expected 'Periodt'")
try_block_statements.append(self.parse_statement())
self.consume('PERIODT')
try_block = Block(try_block_statements)
self.consume('EXCEPT')
self.consume('FEMBOYCORE')
except_block_statements = []
while self.get_current_token().type != 'PERIODT':
if self.get_current_token().type == 'EOF':
raise Exception("Unterminated except block: Expected 'Periodt'")
except_block_statements.append(self.parse_statement())
self.consume('PERIODT')
except_block = Block(except_block_statements)
return TryExceptStatement(try_block, except_block)