Examples with TypeParameter org.eclipse.ceylon.model.typechecker.model.TypeParameter used on opensource projects

Example 41 with TypeParameter

use of org.eclipse.ceylon.model.typechecker.model.TypeParameter in project ceylon by eclipse.

the class ClassTransformer method typeParametersOfAllContainers.

private java.util.List<TypeParameter> typeParametersOfAllContainers(final ClassOrInterface model, boolean includeModelTypeParameters) {
    java.util.List<java.util.List<TypeParameter>> r = new ArrayList<java.util.List<TypeParameter>>(1);
    Scope s = model.getContainer();
    while (!(s instanceof Package)) {
        if (s instanceof Generic) {
            r.add(0, ((Generic) s).getTypeParameters());
        }
        s = s.getContainer();
    }
    Set<String> names = new HashSet<String>();
    for (TypeParameter tp : model.getTypeParameters()) {
        names.add(tp.getName());
    }
    java.util.List<TypeParameter> result = new ArrayList<TypeParameter>(1);
    for (java.util.List<TypeParameter> tps : r) {
        for (TypeParameter tp : tps) {
            if (names.add(tp.getName())) {
                result.add(tp);
            }
        }
    }
    if (includeModelTypeParameters)
        result.addAll(model.getTypeParameters());
    return result;
}

Example 42 with TypeParameter

use of org.eclipse.ceylon.model.typechecker.model.TypeParameter in project ceylon by eclipse.

the class ClassTransformer method addMissingUnrefinedMembers.

/**
 * Recover from members not being refined in the class hierarchy
 * by generating a stub method that throws.
 */
private void addMissingUnrefinedMembers(Node def, Class classModel, ClassDefinitionBuilder classBuilder) {
    for (Reference unrefined : classModel.getUnimplementedFormals()) {
        // classModel.getMember(memberName, null, false);
        Declaration formalMember = unrefined.getDeclaration();
        String errorMessage = "formal member '" + formalMember.getName() + "' of '" + ((TypeDeclaration) formalMember.getContainer()).getName() + "' not implemented in class hierarchy";
        java.util.List<Type> params = new java.util.ArrayList<Type>();
        for (TypeParameter tp : formalMember.getTypeParameters()) {
            params.add(tp.getType());
        }
        if (formalMember instanceof Value) {
            addRefinedThrowerAttribute(classBuilder, errorMessage, def, classModel, (Value) formalMember);
        } else if (formalMember instanceof Function) {
            addRefinedThrowerMethod(classBuilder, errorMessage, classModel, (Function) formalMember);
        } else if (formalMember instanceof Class && formalMember.isClassMember()) {
            addRefinedThrowerInstantiatorMethod(classBuilder, errorMessage, classModel, (Class) formalMember, unrefined);
        }
    // formal member class of interface handled in
    // makeDelegateToCompanion()
    }
}

Example 43 with TypeParameter

use of org.eclipse.ceylon.model.typechecker.model.TypeParameter in project ceylon by eclipse.

the class ClassTransformer method getBestSatisfiedType.

private Type getBestSatisfiedType(Type currentType, Interface iface) {
    Type refinedSuperType = currentType.getSupertype(iface);
    Type firstSatisfiedType = getFirstSatisfiedType(currentType, iface);
    // in the very special case of the first satisfied type having type arguments erased to Object and
    // the most refined one having free type parameters, we prefer the one with free type parameters
    // because Java prefers it and it's in range with what nonWideningType does
    Map<TypeParameter, Type> refinedTAs = refinedSuperType.getTypeArguments();
    Map<TypeParameter, Type> firstTAs = firstSatisfiedType.getTypeArguments();
    for (TypeParameter tp : iface.getTypeParameters()) {
        Type refinedTA = refinedTAs.get(tp);
        Type firstTA = firstTAs.get(tp);
        if (willEraseToObject(firstTA) && isTypeParameter(refinedTA))
            return refinedSuperType;
    }
    return firstSatisfiedType;
}

Example 44 with TypeParameter

use of org.eclipse.ceylon.model.typechecker.model.TypeParameter in project ceylon by eclipse.

the class ClassTransformer method transformTypeParameters.

<T> void transformTypeParameters(GenericBuilder<T> classBuilder, Declaration model) {
    java.util.List<TypeParameter> typeParameters = Strategy.getEffectiveTypeParameters(model);
    if (typeParameters != null) {
        for (TypeParameter param : typeParameters) {
            Scope cont = param.getContainer();
            if (cont instanceof TypeDeclaration) {
                TypeDeclaration container = (TypeDeclaration) cont;
                classBuilder.typeParameter(param);
                if (classBuilder instanceof ClassDefinitionBuilder) {
                    // Copy to the companion too
                    ClassDefinitionBuilder companionBuilder = ((ClassDefinitionBuilder) classBuilder).getCompanionBuilder(container);
                    if (companionBuilder != null)
                        companionBuilder.typeParameter(param);
                }
            }
        }
    }
}

Example 45 with TypeParameter

use of org.eclipse.ceylon.model.typechecker.model.TypeParameter in project ceylon by eclipse.

the class ClassTransformer method makeDelegateToCompanion.

/**
 * Generates a method which delegates to the companion instance $Foo$impl
 */
private MethodDefinitionBuilder makeDelegateToCompanion(Interface iface, Reference typedMember, Type currentType, final long mods, final java.util.List<TypeParameter> typeParameters, final java.util.List<java.util.List<Type>> producedTypeParameterBounds, final Type methodType, final String methodName, final java.util.List<Parameter> parameters, boolean typeErased, final String targetMethodName, Parameter defaultedParam, boolean includeBody) {
    final MethodDefinitionBuilder concreteWrapper = MethodDefinitionBuilder.systemMethod(gen(), methodName);
    concreteWrapper.modifiers(mods);
    concreteWrapper.ignoreModelAnnotations();
    if ((mods & PRIVATE) == 0) {
        concreteWrapper.isOverride(true);
    }
    if (typeParameters != null) {
        concreteWrapper.reifiedTypeParametersFromModel(typeParameters);
    }
    Iterator<java.util.List<Type>> iterator = producedTypeParameterBounds.iterator();
    if (typeParameters != null) {
        for (TypeParameter tp : typeParameters) {
            concreteWrapper.typeParameter(tp, iterator.next());
        }
    }
    boolean explicitReturn = false;
    Declaration member = (defaultedParam != null ? typedMember.getTypedParameter(defaultedParam) : typedMember).getDeclaration();
    Type returnType = null;
    if (!isAnything(methodType) || ((member instanceof Function || member instanceof Value) && !Decl.isUnboxedVoid(member)) || (member instanceof Function && Strategy.useBoxedVoid((Function) member))) {
        explicitReturn = true;
        if (CodegenUtil.isHashAttribute(member)) {
            // delegates for hash attributes are int
            concreteWrapper.resultType(new TransformedType(make().Type(syms().intType)));
            returnType = typedMember.getType();
        } else if (typedMember instanceof TypedReference && defaultedParam == null) {
            TypedReference typedRef = (TypedReference) typedMember;
            // This is very much like for method refinement: if the supertype is erased -> go raw.
            // Except for some reason we only need to do it with multiple inheritance with different type
            // arguments, so let's not go overboard
            int flags = 0;
            if (CodegenUtil.hasTypeErased((TypedDeclaration) member.getRefinedDeclaration()) || CodegenUtil.hasTypeErased((TypedDeclaration) member) && isInheritedTwiceWithDifferentTypeArguments(currentType, iface)) {
                flags |= AbstractTransformer.JT_RAW;
            }
            concreteWrapper.resultTypeNonWidening(currentType, typedRef, typedMember.getType(), flags);
            // FIXME: this is redundant with what we computed in the previous line in concreteWrapper.resultTypeNonWidening
            TypedReference nonWideningTypedRef = gen().nonWideningTypeDecl(typedRef, currentType);
            returnType = gen().nonWideningType(typedRef, nonWideningTypedRef);
        } else if (defaultedParam != null) {
            TypedReference typedParameter = typedMember.getTypedParameter(defaultedParam);
            NonWideningParam nonWideningParam = concreteWrapper.getNonWideningParam(typedParameter, currentType.getDeclaration() instanceof Class ? WideningRules.FOR_MIXIN : WideningRules.NONE);
            returnType = nonWideningParam.nonWideningType;
            if (member instanceof Function)
                returnType = typeFact().getCallableType(returnType);
            concreteWrapper.resultType(new TransformedType(makeJavaType(returnType, nonWideningParam.flags)));
        } else {
            concreteWrapper.resultType(new TransformedType(makeJavaType((Type) typedMember)));
            returnType = (Type) typedMember;
        }
    }
    ListBuffer<JCExpression> arguments = new ListBuffer<JCExpression>();
    if (typeParameters != null) {
        for (TypeParameter tp : typeParameters) {
            arguments.add(naming.makeUnquotedIdent(naming.getTypeArgumentDescriptorName(tp)));
        }
    }
    Declaration declaration = typedMember.getDeclaration();
    if (declaration instanceof Constructor && !Decl.isDefaultConstructor((Constructor) declaration) && defaultedParam == null) {
        concreteWrapper.parameter(makeConstructorNameParameter((Constructor) declaration));
        arguments.add(naming.makeUnquotedIdent(Unfix.$name$));
    }
    int ii = 0;
    for (Parameter param : parameters) {
        Parameter parameter;
        if (declaration instanceof Functional) {
            parameter = ((Functional) declaration).getFirstParameterList().getParameters().get(ii++);
        } else if (declaration instanceof Setter) {
            parameter = ((Setter) declaration).getParameter();
        } else {
            throw BugException.unhandledDeclarationCase(declaration);
        }
        final TypedReference typedParameter = typedMember.getTypedParameter(parameter);
        concreteWrapper.parameter(null, param, typedParameter, null, FINAL, WideningRules.FOR_MIXIN);
        arguments.add(naming.makeName(param.getModel(), Naming.NA_MEMBER | Naming.NA_ALIASED));
    }
    if (includeBody) {
        JCExpression qualifierThis = makeUnquotedIdent(getCompanionFieldName(iface));
        // our impl accessor to get the expected bounds of the qualifying type
        if (explicitReturn) {
            Type javaType = getBestSatisfiedType(currentType, iface);
            Type ceylonType = typedMember.getQualifyingType();
            // don't even bother if the impl accessor is turned to raw because casting it to raw doesn't help
            if (!isTurnedToRaw(ceylonType) && // if it's exactly the same we don't need any cast
            !javaType.isExactly(ceylonType))
                // this will add the proper cast to the impl accessor
                qualifierThis = expressionGen().applyErasureAndBoxing(qualifierThis, currentType, false, true, BoxingStrategy.BOXED, ceylonType, ExpressionTransformer.EXPR_WANTS_COMPANION);
        }
        JCExpression expr = make().Apply(// TODO Type args
        null, makeSelect(qualifierThis, (targetMethodName != null) ? targetMethodName : methodName), arguments.toList());
        if (isUnimplementedMemberClass(currentType, typedMember)) {
            concreteWrapper.body(makeThrowUnresolvedCompilationError(// TODO encapsulate the error message
            "formal member '" + declaration.getName() + "' of '" + iface.getName() + "' not implemented in class hierarchy"));
            current().broken();
        } else if (!explicitReturn) {
            concreteWrapper.body(gen().make().Exec(expr));
        } else {
            // deal with erasure and stuff
            BoxingStrategy boxingStrategy;
            boolean exprBoxed;
            if (member instanceof TypedDeclaration) {
                TypedDeclaration typedDecl = (TypedDeclaration) member;
                exprBoxed = !CodegenUtil.isUnBoxed(typedDecl);
                boxingStrategy = CodegenUtil.getBoxingStrategy(typedDecl);
            } else {
                // must be a class or interface
                exprBoxed = true;
                boxingStrategy = BoxingStrategy.UNBOXED;
            }
            // to force an additional cast
            if (isTurnedToRaw(typedMember.getQualifyingType()) || // in invariant locations
            needsRawCastForMixinSuperCall(iface, methodType) || needsCastForErasedInstantiator(iface, methodName, member))
                typeErased = true;
            expr = gen().expressionGen().applyErasureAndBoxing(expr, methodType, typeErased, exprBoxed, boxingStrategy, returnType, 0);
            concreteWrapper.body(gen().make().Return(expr));
        }
    }
    return concreteWrapper;
}