MisterChaos69/MiniJavaCompiler
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Local variable assignment

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This commit is contained in:
mrab 2024-05-16 09:28:00 +02:00
parent e572975bda
commit 535a6891ad
1 changed files with 16 additions and 4 deletions
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20
src/ByteCode/ClassFile/Generator.hs
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@ -268,9 +268,9 @@ assembleStatement (constants, ops, lvars) (TypedStatement _ (LocalVariableDeclar
Just exp -> assembleExpression (constants, ops, lvars) exp
Nothing -> (constants, ops ++ if isPrimitive then [Opsipush 0] else [Opaconst_null], lvars)
localIndex = fromIntegral (length lvars)
loadLocal = if isPrimitive then [Opistore localIndex] else [Opastore localIndex]
storeLocal = if isPrimitive then [Opistore localIndex] else [Opastore localIndex]
in
(constants_init, ops_init ++ loadLocal, lvars ++ [name])
(constants_init, ops_init ++ storeLocal, lvars ++ [name])
assembleStatement _ stmt = error ("Not yet implemented: " ++ show stmt)
assembleExpression :: Assembler Expression
@ -312,9 +312,21 @@ assembleExpression (constants, ops, lvars) (TypedExpression _ (FieldVariable nam
in case fieldIndex of
Just index -> (constants, ops ++ [Opaload 0, Opgetfield (fromIntegral index)], lvars)
Nothing -> error ("No such field found in constant pool: " ++ name)
assembleExpression (constants, ops, lvars) (TypedExpression _ (LocalVariable name)) = let
assembleExpression (constants, ops, lvars) (TypedExpression dtype (LocalVariable name)) = let
localIndex = findIndex ((==) name) lvars
isPrimitive = elem dtype ["char", "boolean", "int"]
in case localIndex of
Just index -> (constants, ops ++ [Opiload (fromIntegral index)], lvars)
Just index -> (constants, ops ++ if isPrimitive then [Opiload (fromIntegral index)] else [Opaload (fromIntegral index)], lvars)
Nothing -> error ("No such local variable found in local variable pool: " ++ name)
assembleExpression _ expr = error ("unimplemented: " ++ show expr)
assembleStatementExpression :: Assembler StatementExpression
assembleStatementExpression
(constants, ops, lvars)
(TypedStatementExpression _ (Assignment (TypedExpression dtype (LocalVariable name)) expr)) = let
localIndex = findIndex ((==) name) lvars
(constants_a, ops_a, _) = assembleExpression (constants, ops, lvars) expr
isPrimitive = elem dtype ["char", "boolean", "int"]
in case localIndex of
Just index -> (constants_a, ops_a ++ if isPrimitive then [Opistore (fromIntegral index)] else [Opastore (fromIntegral index)], lvars)
Nothing -> error ("No such local variable found in local variable pool: " ++ name)