MisterChaos69/MiniJavaCompiler
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Merge branch 'create-parser' of ssh://gitea.hb.dhbw-stuttgart.de:2222/MisterChaos69/MiniJavaCompiler into bytecode

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mrab 2024-06-14 16:05:46 +02:00
commit 5269971334
2 changed files with 15 additions and 4 deletions
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9
Test/TestParser.hs
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@ -204,6 +204,13 @@ testExpressionConstructorCall = TestCase $
assertEqual "expect constructor call" (StatementExpressionExpression (ConstructorCall "Foo" [])) $
parseExpression [NEW,IDENTIFIER "Foo",LBRACE,RBRACE]
testExpresssionExternalMethodCall = TestCase $
assertEqual "expect method call on sub" (StatementExpressionExpression (MethodCall (Reference "Obj") "foo" [])) $
parseExpression [IDENTIFIER "Obj",DOT,IDENTIFIER "foo",LBRACE,RBRACE]
testExpressionAssignWithThis = TestCase $
assertEqual "expect assignment on Field" (StatementExpressionExpression (Assignment (BinaryOperation NameResolution (Reference "this") (Reference "x")) (Reference "y"))) $
parseExpression [THIS,DOT,IDENTIFIER "x",ASSIGN,IDENTIFIER "y"]
testStatementIfThen = TestCase $
assertEqual "expect empty ifthen" [If (Reference "a") (Block [Block []]) Nothing] $
parseStatement [IF,LBRACE,IDENTIFIER "a",RBRACE,LBRACKET,RBRACKET]
@ -292,6 +299,8 @@ tests = TestList [
testExpressionSimpleFieldAccess,
testExpressionFieldSubAccess,
testExpressionConstructorCall,
testExpresssionExternalMethodCall,
testExpressionAssignWithThis,
testStatementIfThen,
testStatementIfThenElse,
testStatementWhile,

10
src/Parser/JavaParser.y
View File

@ -265,6 +265,7 @@ conditionalorexpression : conditionalandexpression { $1 }
-- | conditionalorexpression LOGICALOR conditionalandexpression{ }
lefthandside : name { $1 }
| primary DOT IDENTIFIER { BinaryOperation NameResolution $1 (Reference $3) }
assignmentoperator : ASSIGN { Nothing }
| TIMESEQUAL { Just Multiplication }
@ -287,8 +288,8 @@ postincrementexpression : postfixexpression INCREMENT { PostIncrement $1 }
postdecrementexpression : postfixexpression DECREMENT { PostDecrement $1 }
methodinvocation : simplename LBRACE RBRACE { MethodCall (Reference "this") $1 [] }
| simplename LBRACE argumentlist RBRACE { MethodCall (Reference "this") $1 $3 }
methodinvocation : name LBRACE RBRACE { let (exp, functionname) = extractFunctionName $1 in (MethodCall exp functionname []) }
| name LBRACE argumentlist RBRACE { let (exp, functionname) = extractFunctionName $1 in (MethodCall exp functionname $3) }
| primary DOT IDENTIFIER LBRACE RBRACE { MethodCall $1 $3 [] }
| primary DOT IDENTIFIER LBRACE argumentlist RBRACE { MethodCall $1 $3 $5 }
@ -374,8 +375,9 @@ data Declarator = Declarator Identifier (Maybe Expression)
convertDeclarator :: DataType -> Declarator -> VariableDeclaration
convertDeclarator dataType (Declarator id assigment) = VariableDeclaration dataType id assigment
data StatementWithoutSub = Statement
extractFunctionName :: Expression -> (Expression, Identifier)
extractFunctionName (BinaryOperation NameResolution exp (Reference functionname)) = (exp, functionname)
extractFunctionName (Reference functionname) = ((Reference "this"), functionname)
parseError :: ([Token], [String]) -> a
parseError (errortoken, expected) = error ("parse error on token: " ++ show errortoken ++ "\nexpected one of: " ++ show expected)