Examples with SiteVariance com.redhat.ceylon.model.typechecker.model.SiteVariance used on opensource projects

Example 1 with SiteVariance

use of com.redhat.ceylon.model.typechecker.model.SiteVariance in project ceylon-compiler by ceylon.

the class TypeParserTests method testParamsVariance2.

@Test
public void testParamsVariance2() {
    Type type = new TypeParser(MockLoader.instance).decodeType("t2<b,out c>", null, mockDefaultModule, mockPkgUnit);
    assertTypeWithParameters(type);
    Map<TypeParameter, SiteVariance> varianceOverrides = type.getVarianceOverrides();
    Assert.assertNotNull(varianceOverrides);
    Assert.assertEquals(1, varianceOverrides.size());
    List<TypeParameter> tps = type.getDeclaration().getTypeParameters();
    Assert.assertEquals(null, varianceOverrides.get(tps.get(0)));
    Assert.assertEquals(SiteVariance.OUT, varianceOverrides.get(tps.get(1)));
}

Example 2 with SiteVariance

use of com.redhat.ceylon.model.typechecker.model.SiteVariance in project ceylon-compiler by ceylon.

the class AbstractTransformer method makeReifiedTypeArgumentResolved.

private JCExpression makeReifiedTypeArgumentResolved(Type pt, boolean qualified) {
    if (pt.isUnion()) {
        // FIXME: refactor this shite
        List<JCExpression> typeTestArguments = List.nil();
        java.util.List<Type> typeParameters = pt.getCaseTypes();
        if (typeParameters.size() == 2) {
            Type alternative = null;
            if (typeParameters.get(0).isEmpty())
                alternative = typeParameters.get(1);
            else if (typeParameters.get(1).isEmpty())
                alternative = typeParameters.get(0);
            if (alternative != null && alternative.isTuple()) {
                JCExpression tupleType = makeTupleTypeDescriptor(alternative, true);
                if (tupleType != null)
                    return tupleType;
            }
        }
        for (int i = typeParameters.size() - 1; i >= 0; i--) {
            typeTestArguments = typeTestArguments.prepend(makeReifiedTypeArgument(typeParameters.get(i)));
        }
        return make().Apply(null, makeSelect(makeTypeDescriptorType(), "union"), typeTestArguments);
    } else if (pt.isIntersection()) {
        List<JCExpression> typeTestArguments = List.nil();
        java.util.List<Type> typeParameters = pt.getSatisfiedTypes();
        for (int i = typeParameters.size() - 1; i >= 0; i--) {
            typeTestArguments = typeTestArguments.prepend(makeReifiedTypeArgument(typeParameters.get(i)));
        }
        return make().Apply(null, makeSelect(makeTypeDescriptorType(), "intersection"), typeTestArguments);
    } else if (pt.isNothing()) {
        return makeNothingTypeDescriptor();
    }
    TypeDeclaration declaration = pt.getDeclaration();
    if (declaration instanceof Constructor) {
        pt = pt.getExtendedType();
        declaration = pt.getDeclaration();
    }
    if (pt.isClassOrInterface()) {
        if (declaration.isJavaEnum()) {
            pt = pt.getExtendedType();
            declaration = pt.getDeclaration();
        }
        // see if we have an alias for it
        if (supportsReifiedAlias((ClassOrInterface) declaration)) {
            JCExpression qualifier = naming.makeDeclarationName(declaration, DeclNameFlag.QUALIFIED);
            return makeSelect(qualifier, naming.getTypeDescriptorAliasName());
        }
        if (pt.isTuple()) {
            JCExpression tupleType = makeTupleTypeDescriptor(pt, false);
            if (tupleType != null)
                return tupleType;
        }
        // no alias, must build it
        List<JCExpression> typeTestArguments = makeReifiedTypeArgumentsResolved(pt.getTypeArgumentList(), qualified);
        JCExpression thisType = makeUnerasedClassLiteral(declaration);
        // do we have variance overrides?
        Map<TypeParameter, SiteVariance> varianceOverrides = pt.getVarianceOverrides();
        if (!varianceOverrides.isEmpty()) {
            // we need to pass them as second argument then, in an array
            ListBuffer<JCExpression> varianceElements = new ListBuffer<JCExpression>();
            for (TypeParameter typeParameter : declaration.getTypeParameters()) {
                SiteVariance useSiteVariance = varianceOverrides.get(typeParameter);
                String selector;
                if (useSiteVariance != null) {
                    switch(useSiteVariance) {
                        case IN:
                            selector = "IN";
                            break;
                        case OUT:
                            selector = "OUT";
                            break;
                        default:
                            selector = "NONE";
                            break;
                    }
                } else {
                    selector = "NONE";
                }
                JCExpression varianceElement = make().Select(makeIdent(syms().ceylonVarianceType), names().fromString(selector));
                varianceElements.append(varianceElement);
            }
            JCNewArray varianceArray = make().NewArray(makeIdent(syms().ceylonVarianceType), List.<JCExpression>nil(), varianceElements.toList());
            typeTestArguments = typeTestArguments.prepend(varianceArray);
        }
        typeTestArguments = typeTestArguments.prepend(thisType);
        JCExpression classDescriptor = make().Apply(null, makeSelect(makeTypeDescriptorType(), "klass"), typeTestArguments);
        Type qualifyingType = pt.getQualifyingType();
        JCExpression containerType = null;
        if (qualifyingType == null && // ignore qualifying types of static java declarations
        (Decl.isCeylon(declaration) || !declaration.isStaticallyImportable())) {
            // it may be contained in a function or value, and we want its type
            Declaration enclosingDeclaration = getDeclarationContainer(declaration);
            if (enclosingDeclaration instanceof TypedDeclaration)
                containerType = makeTypedDeclarationTypeDescriptorResolved((TypedDeclaration) enclosingDeclaration);
            else if (enclosingDeclaration instanceof TypeDeclaration) {
                qualifyingType = ((TypeDeclaration) enclosingDeclaration).getType();
            }
        }
        if (qualifyingType != null && qualifyingType.getDeclaration() instanceof Constructor) {
            qualifyingType = qualifyingType.getQualifyingType();
        }
        if (qualifyingType != null) {
            containerType = makeReifiedTypeArgumentResolved(qualifyingType, true);
        }
        if (containerType == null) {
            return classDescriptor;
        } else {
            return make().Apply(null, makeSelect(makeTypeDescriptorType(), "member"), List.of(containerType, classDescriptor));
        }
    } else if (pt.isTypeParameter()) {
        TypeParameter tp = (TypeParameter) declaration;
        String name = naming.getTypeArgumentDescriptorName(tp);
        if (!qualified || isTypeParameterSubstituted(tp))
            return makeUnquotedIdent(name);
        Scope container = tp.getContainer();
        JCExpression qualifier = null;
        if (container instanceof Class) {
            qualifier = naming.makeQualifiedThis(makeJavaType(((Class) container).getType(), JT_RAW));
        } else if (container instanceof Interface) {
            qualifier = naming.makeQualifiedThis(makeJavaType(((Interface) container).getType(), JT_COMPANION | JT_RAW));
        } else if (container instanceof Function) {
            // name must be a unique name, as returned by getTypeArgumentDescriptorName
            return makeUnquotedIdent(name);
        } else {
            throw BugException.unhandledCase(container);
        }
        return makeSelect(qualifier, name);
    } else {
        throw BugException.unhandledDeclarationCase(declaration);
    }
}

Example 3 with SiteVariance

use of com.redhat.ceylon.model.typechecker.model.SiteVariance in project ceylon-compiler by ceylon.

the class TypeParserTests method testParamsVariance3.

@Test
public void testParamsVariance3() {
    Type type = new TypeParser(MockLoader.instance).decodeType("t2<in b,c>", null, mockDefaultModule, mockPkgUnit);
    assertTypeWithParameters(type);
    Map<TypeParameter, SiteVariance> varianceOverrides = type.getVarianceOverrides();
    Assert.assertNotNull(varianceOverrides);
    Assert.assertEquals(1, varianceOverrides.size());
    List<TypeParameter> tps = type.getDeclaration().getTypeParameters();
    Assert.assertEquals(SiteVariance.IN, varianceOverrides.get(tps.get(0)));
    Assert.assertEquals(null, varianceOverrides.get(tps.get(1)));
}

Example 4 with SiteVariance

use of com.redhat.ceylon.model.typechecker.model.SiteVariance in project ceylon-compiler by ceylon.

the class TypeParserTests method testParamsVariance1.

@Test
public void testParamsVariance1() {
    Type type = new TypeParser(MockLoader.instance).decodeType("t2<in b,out c>", null, mockDefaultModule, mockPkgUnit);
    assertTypeWithParameters(type);
    Map<TypeParameter, SiteVariance> varianceOverrides = type.getVarianceOverrides();
    Assert.assertNotNull(varianceOverrides);
    Assert.assertEquals(2, varianceOverrides.size());
    List<TypeParameter> tps = type.getDeclaration().getTypeParameters();
    Assert.assertEquals(SiteVariance.IN, varianceOverrides.get(tps.get(0)));
    Assert.assertEquals(SiteVariance.OUT, varianceOverrides.get(tps.get(1)));
}