Examples with FunctionTypeExprOrRef org.eclipse.n4js.ts.typeRefs.FunctionTypeExprOrRef used on opensource projects

Example 1 with FunctionTypeExprOrRef

use of org.eclipse.n4js.ts.typeRefs.FunctionTypeExprOrRef in project n4js by eclipse.

the class N4JSMemberRedefinitionValidator method isSubTypeResult.

/**
 * @param rightThisContextType
 *            the type to use as context for the "this binding" of the right-hand-side member or <code>null</code>
 *            to use the default, i.e. the {@link #getCurrentTypeContext() current type context}.
 */
private Result<Boolean> isSubTypeResult(TMember left, Type rightThisContextType, TMember right) {
    // will return type of value for fields, function type for methods, type of return value for getters, type of
    // parameter for setters
    final Resource res = left.eResource();
    final TypeRef mainContext = getCurrentTypeContext();
    final TypeRef rightThisContext = rightThisContextType != null ? TypeUtils.createTypeRef(rightThisContextType) : mainContext;
    final RuleEnvironment G_left = ts.createRuleEnvironmentForContext(mainContext, mainContext, res);
    final RuleEnvironment G_right = ts.createRuleEnvironmentForContext(mainContext, rightThisContext, res);
    TypeRef typeLeft = ts.tau(left, G_left);
    TypeRef typeRight = ts.tau(right, G_right);
    // in case of checking compatibility of constructors, we can ignore the return types
    // i.e. turn {function(string):this[C]?} into {function(string)}
    // (simplifies subtype check and, more importantly, leads to better error messages)
    RuleEnvironment G = getCurrentRuleEnvironment();
    if (left.isConstructor() && typeLeft instanceof FunctionTypeExprOrRef) {
        typeLeft = changeReturnTypeToVoid(G, (FunctionTypeExprOrRef) typeLeft);
    }
    if (right.isConstructor() && typeRight instanceof FunctionTypeExprOrRef) {
        typeRight = changeReturnTypeToVoid(G, (FunctionTypeExprOrRef) typeRight);
    }
    return ts.subtype(G, typeLeft, typeRight);
}

Example 2 with FunctionTypeExprOrRef

use of org.eclipse.n4js.ts.typeRefs.FunctionTypeExprOrRef in project n4js by eclipse.

the class TypeCompareLogic method compare.

/**
 * WARNING: fqnProvider may be <code>null</code>, but then the lower/greater info will be unreliable!
 */
/* package */
static int compare(IQualifiedNameProvider fqnProvider, TypeArgument arg1, TypeArgument arg2) {
    if (arg1 == arg2) {
        return 0;
    }
    if (arg1 == null) {
        return -1;
    }
    if (arg2 == null) {
        return 1;
    }
    if (arg1 instanceof Wildcard || arg2 instanceof Wildcard) {
        if (arg1 instanceof Wildcard && arg2 instanceof Wildcard) {
            final Wildcard w1 = (Wildcard) arg1;
            final Wildcard w2 = (Wildcard) arg2;
            int c;
            // lower bounds
            c = compare(fqnProvider, w1.getDeclaredLowerBound(), w2.getDeclaredLowerBound());
            if (c != 0) {
                return c;
            }
            // upper bounds
            c = compare(fqnProvider, w1.getDeclaredUpperBound(), w2.getDeclaredUpperBound());
            if (c != 0) {
                return c;
            }
            return 0;
        }
        return compareEClasses(arg1.eClass(), arg2.eClass());
    }
    // now, we know we have two TypeRefs
    final TypeRef ref1 = (TypeRef) arg1;
    final TypeRef ref2 = (TypeRef) arg2;
    // @formatter:on
    if (ref1 instanceof ExistentialTypeRef && ref2 instanceof ExistentialTypeRef) {
        return compare(fqnProvider, ((ExistentialTypeRef) ref1).getWildcard(), ((ExistentialTypeRef) ref2).getWildcard());
    }
    // its subclasses
    if (ref1 instanceof FunctionTypeExprOrRef && ref2 instanceof FunctionTypeExprOrRef) {
        final FunctionTypeExprOrRef f1 = (FunctionTypeExprOrRef) ref1;
        final FunctionTypeExprOrRef f2 = (FunctionTypeExprOrRef) ref2;
        return compareFunctionTypeExprOrRefs(fqnProvider, f1, f2);
    }
    int c;
    c = compareEClasses(ref1.eClass(), ref2.eClass());
    if (c != 0) {
        return c;
    }
    // note: ref1 and ref2 are of the same type, otherwise c would not be 0
    // declared type
    c = compare(fqnProvider, ref1.getDeclaredType(), ref2.getDeclaredType());
    if (c != 0) {
        return c;
    }
    // if we got a subclass of StructuralTypeRef -> check properties of StructuralTypeRef beforehand
    if (ref1 instanceof StructuralTypeRef) {
        final StructuralTypeRef sref1 = (StructuralTypeRef) ref1;
        final StructuralTypeRef sref2 = (StructuralTypeRef) ref2;
        // note: for simplicity, we here require sref1/sref2.structuralMembers to have the same order
        // (we aren't doing a semantic compare anyway)
        c = compareComparables(sref1.getTypingStrategy(), sref2.getTypingStrategy());
        if (c != 0) {
            return c;
        }
        c = compare(fqnProvider, sref1.getStructuralType(), sref2.getStructuralType());
        if (c != 0) {
            return c;
        }
        final Iterator<TStructMember> iter1 = sref1.getStructuralMembers().iterator();
        final Iterator<TStructMember> iter2 = sref2.getStructuralMembers().iterator();
        while (iter1.hasNext() && iter2.hasNext()) {
            c = compareMembers(fqnProvider, iter1.next(), iter2.next());
            if (c != 0) {
                return c;
            }
        }
        if (iter1.hasNext()) {
            return 1;
        }
        if (iter2.hasNext()) {
            return -1;
        }
    }
    if (ref1 instanceof ParameterizedTypeRef) {
        final ParameterizedTypeRef pref1 = (ParameterizedTypeRef) ref1;
        final ParameterizedTypeRef pref2 = (ParameterizedTypeRef) ref2;
        c = compareTypeArguments(fqnProvider, pref1.getTypeArgs(), pref2.getTypeArgs());
        if (c != 0) {
            return c;
        }
    } else if (ref1 instanceof ComposedTypeRef) {
        final ComposedTypeRef cref1 = (ComposedTypeRef) ref1;
        final ComposedTypeRef cref2 = (ComposedTypeRef) ref2;
        c = compareTypeArguments(fqnProvider, cref1.getTypeRefs(), cref2.getTypeRefs());
        if (c != 0) {
            return c;
        }
    } else if (ref1 instanceof TypeTypeRef) {
        final TypeTypeRef cref1 = (TypeTypeRef) ref1;
        final TypeTypeRef cref2 = (TypeTypeRef) ref2;
        c = compareComparables(cref1.isConstructorRef(), cref2.isConstructorRef());
        if (c != 0) {
            return c;
        }
        c = compare(fqnProvider, cref1.getTypeArg(), cref2.getTypeArg());
        if (c != 0) {
            return c;
        }
    } else if (ref1 instanceof BoundThisTypeRef) {
        final BoundThisTypeRef bref1 = (BoundThisTypeRef) ref1;
        final BoundThisTypeRef bref2 = (BoundThisTypeRef) ref2;
        c = compare(fqnProvider, bref1.getActualThisTypeRef(), bref2.getActualThisTypeRef());
        if (c != 0) {
            return c;
        }
    }
    // dynamic
    c = Boolean.compare(ref1.isDynamic(), ref2.isDynamic());
    if (c != 0) {
        return c;
    }
    return 0;
}

Example 3 with FunctionTypeExprOrRef

use of org.eclipse.n4js.ts.typeRefs.FunctionTypeExprOrRef in project n4js by eclipse.

the class TFormalParameterImpl method isOptional.

/**
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
public boolean isOptional() {
    EList<TFormalParameter> _switchResult = null;
    EObject _eContainer = this.eContainer();
    boolean _matched = false;
    if (_eContainer instanceof TFunction) {
        _matched = true;
        EObject _eContainer_1 = this.eContainer();
        _switchResult = ((TFunction) _eContainer_1).getFpars();
    }
    if (!_matched) {
        if (_eContainer instanceof FunctionTypeExprOrRef) {
            _matched = true;
            EObject _eContainer_1 = this.eContainer();
            _switchResult = ((FunctionTypeExprOrRef) _eContainer_1).getFpars();
        }
    }
    if (!_matched) {
        return false;
    }
    final EList<TFormalParameter> fpars = _switchResult;
    for (int i = fpars.indexOf(this); (i >= 0); i--) {
        {
            final TFormalParameter fpar = fpars.get(i);
            if ((fpar.isVariadic() || fpar.isHasInitializerAssignment())) {
                return true;
            }
        }
    }
    return false;
}

Example 4 with FunctionTypeExprOrRef

use of org.eclipse.n4js.ts.typeRefs.FunctionTypeExprOrRef in project n4js by eclipse.

the class TypeXpectMethod method getTypeArgumentsString.

private String getTypeArgumentsString(IEObjectCoveringRegion offset) {
    final EObject eobject = offset != null ? offset.getEObject() : null;
    final EObject container = eobject != null ? eobject.eContainer() : null;
    if (eobject == null || !(container instanceof ParameterizedCallExpression && ((ParameterizedCallExpression) container).getTarget() == eobject)) {
        // missing or invalid offset
        return "xpect method error: offset not given or does not point to target of a call expression";
    }
    if (!(eobject.eResource() instanceof N4JSResource)) {
        return "xpect method error: offset does not point to an EObject contained in a N4JSResource";
    }
    // offset points to the target of a call expression
    final ParameterizedCallExpression callExpr = (ParameterizedCallExpression) container;
    final RuleEnvironment G = RuleEnvironmentExtensions.newRuleEnvironment(eobject);
    final Result<TypeRef> targetTypeRef = ts.type(G, callExpr.getTarget());
    if (targetTypeRef.failed() || !(targetTypeRef.getValue() instanceof FunctionTypeExprOrRef)) {
        return "xpect method error: cannot infer type of call expression target OR it's not a FunctionTypeExprOrRef";
    }
    final List<TypeVariable> typeParams = ((FunctionTypeExprOrRef) targetTypeRef.getValue()).getTypeVars();
    // not interested in the actual typeParams, just the size
    final int expectedNumOfTypeArgs = typeParams.size();
    final List<TypeRef> typeArgs;
    if (callExpr.getTypeArgs().isEmpty()) {
        // no type arguments given in call expression -> use inferred type arguments
        // (should be the standard case when testing)
        final List<TypeRef> inferredTypeArgs = ASTMetaInfoUtils.getInferredTypeArgs(callExpr);
        if (inferredTypeArgs != null) {
            typeArgs = inferredTypeArgs;
        } else {
            typeArgs = Collections.emptyList();
        }
    } else {
        // call expression is parameterized -> use the explicitly given type arguments
        // (just provided for completeness)
        typeArgs = callExpr.getTypeArgs();
    }
    final StringBuilder sb = new StringBuilder();
    for (int i = 0; i < expectedNumOfTypeArgs; i++) {
        final TypeRef inferredTypeArg = i < typeArgs.size() ? typeArgs.get(i) : null;
        if (sb.length() > 0)
            sb.append(", ");
        if (inferredTypeArg != null)
            sb.append(inferredTypeArg.getTypeRefAsString());
        else
            sb.append("*missing*");
    }
    return sb.toString();
}

Example 5 with FunctionTypeExprOrRef

use of org.eclipse.n4js.ts.typeRefs.FunctionTypeExprOrRef in project n4js by eclipse.

the class InternalTypeSystem method applyRuleExpectedTypeOfArgument.

protected Result<TypeRef> applyRuleExpectedTypeOfArgument(final RuleEnvironment G, final RuleApplicationTrace _trace_, final Argument argument, final Expression argumentExpression) throws RuleFailedException {
    // output parameter
    TypeRef T = null;
    final EObject expr = argument.eContainer();
    if ((expr instanceof NewExpression)) {
        boolean _contains = ((NewExpression) expr).getArguments().contains(argument);
        boolean _not = (!_contains);
        if (_not) {
        } else {
            /* G |- expr.callee : var TypeTypeRef ctorTypeRef */
            Expression _callee = ((NewExpression) expr).getCallee();
            TypeTypeRef ctorTypeRef = null;
            Result<TypeRef> result = typeInternal(G, _trace_, _callee);
            checkAssignableTo(result.getFirst(), TypeTypeRef.class);
            ctorTypeRef = (TypeTypeRef) result.getFirst();
            TypeRef typeRefOfInstanceToCreate = this.typeSystemHelper.createTypeRefFromStaticType(G, ctorTypeRef, ((TypeArgument[]) Conversions.unwrapArray(((NewExpression) expr).getTypeArgs(), TypeArgument.class)));
            Type _declaredType = typeRefOfInstanceToCreate.getDeclaredType();
            ContainerType<?> typeOfInstanceToCreate = ((ContainerType<?>) _declaredType);
            final RuleEnvironment G2 = RuleEnvironmentExtensions.wrap(G);
            this.typeSystemHelper.addSubstitutions(G2, typeRefOfInstanceToCreate);
            RuleEnvironmentExtensions.addThisType(G2, typeRefOfInstanceToCreate);
            TMethod ctor = this.containerTypesHelper.fromContext(((NewExpression) expr).eResource()).findConstructor(typeOfInstanceToCreate);
            TFormalParameter _fparForArgIdx = null;
            if (ctor != null) {
                _fparForArgIdx = ctor.getFparForArgIdx(ECollections.indexOf(((NewExpression) expr).getArguments(), argument, 0));
            }
            final TFormalParameter fpar = _fparForArgIdx;
            if ((fpar == null)) {
                T = TypeRefsFactory.eINSTANCE.createUnknownTypeRef();
            } else {
                final TypeRef paramType = fpar.getTypeRef();
                if ((paramType == null)) {
                    T = RuleEnvironmentExtensions.anyTypeRef(G2);
                } else {
                    /* G2 |- paramType ~> T */
                    Result<TypeArgument> result_1 = substTypeVariablesInternal(G2, _trace_, paramType);
                    checkAssignableTo(result_1.getFirst(), TypeRef.class);
                    T = (TypeRef) result_1.getFirst();
                }
            }
        }
    } else {
        if ((expr instanceof ParameterizedCallExpression)) {
            boolean _contains_1 = ((ParameterizedCallExpression) expr).getArguments().contains(argument);
            /* expr.arguments.contains(argument) */
            if (!_contains_1) {
                sneakyThrowRuleFailedException("expr.arguments.contains(argument)");
            }
            /* G |- expr.target : var TypeRef targetTypeRef */
            Expression _target = ((ParameterizedCallExpression) expr).getTarget();
            TypeRef targetTypeRef = null;
            Result<TypeRef> result_2 = typeInternal(G, _trace_, _target);
            checkAssignableTo(result_2.getFirst(), TypeRef.class);
            targetTypeRef = (TypeRef) result_2.getFirst();
            if ((targetTypeRef instanceof FunctionTypeExprOrRef)) {
                final FunctionTypeExprOrRef F = ((FunctionTypeExprOrRef) targetTypeRef);
                final int argIndex = ECollections.indexOf(((ParameterizedCallExpression) expr).getArguments(), argument, 0);
                final TFormalParameter fpar_1 = F.getFparForArgIdx(argIndex);
                if ((fpar_1 == null)) {
                    T = TypeRefsFactory.eINSTANCE.createUnknownTypeRef();
                } else {
                    final TypeRef paramType_1 = fpar_1.getTypeRef();
                    if ((paramType_1 == null)) {
                        T = RuleEnvironmentExtensions.anyTypeRef(G);
                    } else {
                        final RuleEnvironment G2_1 = RuleEnvironmentExtensions.wrap(G);
                        this.typeSystemHelper.addSubstitutions(G2_1, ((ParameterizedCallExpression) expr), F);
                        Expression _target_1 = ((ParameterizedCallExpression) expr).getTarget();
                        if ((_target_1 instanceof SuperLiteral)) {
                            N4ClassDeclaration _containerOfType = EcoreUtil2.<N4ClassDeclaration>getContainerOfType(expr, N4ClassDeclaration.class);
                            Type _definedType = null;
                            if (_containerOfType != null) {
                                _definedType = _containerOfType.getDefinedType();
                            }
                            final Type containingClass = _definedType;
                            if ((containingClass instanceof TClass)) {
                                RuleEnvironmentExtensions.addThisType(G2_1, TypeExtensions.ref(containingClass));
                                ParameterizedTypeRef _superClassRef = ((TClass) containingClass).getSuperClassRef();
                                boolean _tripleNotEquals = (_superClassRef != null);
                                if (_tripleNotEquals) {
                                    this.typeSystemHelper.addSubstitutions(G2_1, ((TClass) containingClass).getSuperClassRef());
                                }
                                if ((paramType_1 instanceof ThisTypeRefStructural)) {
                                    RuleEnvironmentExtensions.addThisType(G2_1, ((TClass) containingClass).getSuperClassRef());
                                }
                            }
                        }
                        /* G2 |- paramType ~> T */
                        Result<TypeArgument> result_3 = substTypeVariablesInternal(G2_1, _trace_, paramType_1);
                        checkAssignableTo(result_3.getFirst(), TypeRef.class);
                        T = (TypeRef) result_3.getFirst();
                    }
                }
            } else {
                T = TypeRefsFactory.eINSTANCE.createUnknownTypeRef();
            }
        }
    }
    return new Result<TypeRef>(T);
}