MisterChaos69/MiniJavaCompiler
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Add initial typechecker for AST #2

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mrab merged 121 commits from typedAST into master 2024-06-14 07:53:30 +00:00
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src/Typecheck.hs
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@ -25,7 +25,7 @@ typeCheckMethodDeclaration (MethodDeclaration retType name params body) classFie
checkedBody = typeCheckStatement body initialSymtab classes
bodyType = getTypeFromStmt checkedBody
-- Check if the type of the body matches the declared return type
in if bodyType == retType || (bodyType == "void" && retType == "void")
in if bodyType == retType || (bodyType == "void" && retType == "void") || (bodyType == "null" && isObjectType retType)
then MethodDeclaration retType name params checkedBody
else error $ "Return type mismatch in method " ++ name ++ ": expected " ++ retType ++ ", found " ++ bodyType