Examples with ResolvedType com.github.javaparser.resolution.types.ResolvedType used on opensource projects

Example 66 with ResolvedType

use of com.github.javaparser.resolution.types.ResolvedType in project javaparser by javaparser.

the class MethodUsage method replaceTypeParameter.

public MethodUsage replaceTypeParameter(ResolvedTypeParameterDeclaration typeParameter, ResolvedType type) {
    if (type == null) {
        throw new IllegalArgumentException();
    }
    // TODO if the method declaration has a type param with that name ignore this call
    MethodUsage res = new MethodUsage(declaration, paramTypes, returnType, exceptionTypes, typeParametersMap.toBuilder().setValue(typeParameter, type).build());
    Map<ResolvedTypeParameterDeclaration, ResolvedType> inferredTypes = new HashMap<>();
    for (int i = 0; i < paramTypes.size(); i++) {
        ResolvedType originalParamType = paramTypes.get(i);
        ResolvedType newParamType = originalParamType.replaceTypeVariables(typeParameter, type, inferredTypes);
        res = res.replaceParamType(i, newParamType);
    }
    for (int i = 0; i < exceptionTypes.size(); i++) {
        ResolvedType originalType = exceptionTypes.get(i);
        ResolvedType newType = originalType.replaceTypeVariables(typeParameter, type, inferredTypes);
        res = res.replaceExceptionType(i, newType);
    }
    ResolvedType oldReturnType = res.returnType;
    ResolvedType newReturnType = oldReturnType.replaceTypeVariables(typeParameter, type, inferredTypes);
    res = res.replaceReturnType(newReturnType);
    return res;
}

Example 67 with ResolvedType

use of com.github.javaparser.resolution.types.ResolvedType in project javaparser by javaparser.

the class TypeExtractor method visit.

@Override
public ResolvedType visit(MethodReferenceExpr node, Boolean solveLambdas) {
    if (requireParentNode(node) instanceof MethodCallExpr) {
        MethodCallExpr callExpr = (MethodCallExpr) requireParentNode(node);
        int pos = JavaParserSymbolDeclaration.getParamPos(node);
        SymbolReference<ResolvedMethodDeclaration> refMethod = facade.solve(callExpr, false);
        if (!refMethod.isSolved()) {
            throw new com.github.javaparser.resolution.UnsolvedSymbolException(requireParentNode(node).toString(), callExpr.getName().getId());
        }
        logger.finest("getType on method reference expr " + refMethod.getCorrespondingDeclaration().getName());
        // logger.finest("Method param " + refMethod.getCorrespondingDeclaration().getParam(pos));
        if (solveLambdas) {
            MethodUsage usage = facade.solveMethodAsUsage(callExpr);
            ResolvedType result = usage.getParamType(pos);
            // We need to replace the type variables
            Context ctx = JavaParserFactory.getContext(node, typeSolver);
            result = solveGenericTypes(result, ctx, typeSolver);
            // lambdas
            if (FunctionalInterfaceLogic.getFunctionalMethod(result).isPresent()) {
                MethodReferenceExpr methodReferenceExpr = node;
                ResolvedType actualType = facade.toMethodUsage(methodReferenceExpr).returnType();
                ResolvedType formalType = FunctionalInterfaceLogic.getFunctionalMethod(result).get().returnType();
                InferenceContext inferenceContext = new InferenceContext(MyObjectProvider.INSTANCE);
                inferenceContext.addPair(formalType, actualType);
                result = inferenceContext.resolve(inferenceContext.addSingle(result));
            }
            return result;
        }
        return refMethod.getCorrespondingDeclaration().getParam(pos).getType();
    }
    throw new UnsupportedOperationException("The type of a method reference expr depends on the position and its return value");
}

Example 68 with ResolvedType

use of com.github.javaparser.resolution.types.ResolvedType in project javaparser by javaparser.

the class TypeExtractor method visit.

@Override
public ResolvedType visit(LambdaExpr node, Boolean solveLambdas) {
    if (requireParentNode(node) instanceof MethodCallExpr) {
        MethodCallExpr callExpr = (MethodCallExpr) requireParentNode(node);
        int pos = JavaParserSymbolDeclaration.getParamPos(node);
        SymbolReference<ResolvedMethodDeclaration> refMethod = facade.solve(callExpr);
        if (!refMethod.isSolved()) {
            throw new com.github.javaparser.resolution.UnsolvedSymbolException(requireParentNode(node).toString(), callExpr.getName().getId());
        }
        logger.finest("getType on lambda expr " + refMethod.getCorrespondingDeclaration().getName());
        if (solveLambdas) {
            // The type parameter referred here should be the java.util.stream.Stream.T
            ResolvedType result = refMethod.getCorrespondingDeclaration().getParam(pos).getType();
            if (callExpr.getScope().isPresent()) {
                Expression scope = callExpr.getScope().get();
                // If it is a static call we should not try to get the type of the scope
                boolean staticCall = false;
                if (scope instanceof NameExpr) {
                    NameExpr nameExpr = (NameExpr) scope;
                    try {
                        SymbolReference<ResolvedTypeDeclaration> type = JavaParserFactory.getContext(nameExpr, typeSolver).solveType(nameExpr.getName().getId(), typeSolver);
                        if (type.isSolved()) {
                            staticCall = true;
                        }
                    } catch (Exception e) {
                    }
                }
                if (!staticCall) {
                    ResolvedType scopeType = facade.getType(scope);
                    if (scopeType.isReferenceType()) {
                        result = scopeType.asReferenceType().useThisTypeParametersOnTheGivenType(result);
                    }
                }
            }
            // We need to replace the type variables
            Context ctx = JavaParserFactory.getContext(node, typeSolver);
            result = solveGenericTypes(result, ctx, typeSolver);
            // We should find out which is the functional method (e.g., apply) and replace the params of the
            // solveLambdas with it, to derive so the values. We should also consider the value returned by the
            // lambdas
            Optional<MethodUsage> functionalMethod = FunctionalInterfaceLogic.getFunctionalMethod(result);
            if (functionalMethod.isPresent()) {
                LambdaExpr lambdaExpr = node;
                InferenceContext lambdaCtx = new InferenceContext(MyObjectProvider.INSTANCE);
                InferenceContext funcInterfaceCtx = new InferenceContext(MyObjectProvider.INSTANCE);
                // At this point parameterType
                // if Function<T=? super Stream.T, ? extends map.R>
                // we should replace Stream.T
                ResolvedType functionalInterfaceType = ReferenceTypeImpl.undeterminedParameters(functionalMethod.get().getDeclaration().declaringType(), typeSolver);
                lambdaCtx.addPair(result, functionalInterfaceType);
                ResolvedType actualType;
                if (lambdaExpr.getBody() instanceof ExpressionStmt) {
                    actualType = facade.getType(((ExpressionStmt) lambdaExpr.getBody()).getExpression());
                } else if (lambdaExpr.getBody() instanceof BlockStmt) {
                    BlockStmt blockStmt = (BlockStmt) lambdaExpr.getBody();
                    // Get all the return statements in the lambda block
                    List<ReturnStmt> returnStmts = blockStmt.findAll(ReturnStmt.class);
                    if (returnStmts.size() > 0) {
                        actualType = returnStmts.stream().map(returnStmt -> returnStmt.getExpression().map(e -> facade.getType(e)).orElse(ResolvedVoidType.INSTANCE)).filter(x -> x != null && !x.isVoid() && !x.isNull()).findFirst().orElse(ResolvedVoidType.INSTANCE);
                    } else {
                        return ResolvedVoidType.INSTANCE;
                    }
                } else {
                    throw new UnsupportedOperationException();
                }
                ResolvedType formalType = functionalMethod.get().returnType();
                // Infer the functional interfaces' return vs actual type
                funcInterfaceCtx.addPair(formalType, actualType);
                // Substitute to obtain a new type
                ResolvedType functionalTypeWithReturn = funcInterfaceCtx.resolve(funcInterfaceCtx.addSingle(functionalInterfaceType));
                // we don't need to bother inferring types
                if (!(formalType instanceof ResolvedVoidType)) {
                    lambdaCtx.addPair(result, functionalTypeWithReturn);
                    result = lambdaCtx.resolve(lambdaCtx.addSingle(result));
                }
            }
            return result;
        } else {
            return refMethod.getCorrespondingDeclaration().getParam(pos).getType();
        }
    } else {
        throw new UnsupportedOperationException("The type of a lambda expr depends on the position and its return value");
    }
}

Example 69 with ResolvedType

use of com.github.javaparser.resolution.types.ResolvedType in project javaparser by javaparser.

the class AbstractJavaParserContext method findTypeDeclarations.

protected Collection<ResolvedReferenceTypeDeclaration> findTypeDeclarations(Optional<Expression> optScope, TypeSolver typeSolver) {
    if (optScope.isPresent()) {
        Expression scope = optScope.get();
        // consider static methods
        if (scope instanceof NameExpr) {
            NameExpr scopeAsName = (NameExpr) scope;
            SymbolReference<ResolvedTypeDeclaration> symbolReference = this.solveType(scopeAsName.getName().getId(), typeSolver);
            if (symbolReference.isSolved() && symbolReference.getCorrespondingDeclaration().isType()) {
                return singletonList(symbolReference.getCorrespondingDeclaration().asReferenceType());
            }
        }
        ResolvedType typeOfScope;
        try {
            typeOfScope = JavaParserFacade.get(typeSolver).getType(scope);
        } catch (Exception e) {
            throw new RuntimeException("Issue calculating the type of the scope of " + this, e);
        }
        if (typeOfScope.isWildcard()) {
            if (typeOfScope.asWildcard().isExtends() || typeOfScope.asWildcard().isSuper()) {
                return singletonList(typeOfScope.asWildcard().getBoundedType().asReferenceType().getTypeDeclaration());
            } else {
                return singletonList(new ReflectionClassDeclaration(Object.class, typeSolver).asReferenceType());
            }
        } else if (typeOfScope.isArray()) {
            // method call on array are Object methods
            return singletonList(new ReflectionClassDeclaration(Object.class, typeSolver).asReferenceType());
        } else if (typeOfScope.isTypeVariable()) {
            Collection<ResolvedReferenceTypeDeclaration> result = new ArrayList<>();
            for (ResolvedTypeParameterDeclaration.Bound bound : typeOfScope.asTypeParameter().getBounds()) {
                result.add(bound.getType().asReferenceType().getTypeDeclaration());
            }
            return result;
        } else if (typeOfScope.isConstraint()) {
            return singletonList(typeOfScope.asConstraintType().getBound().asReferenceType().getTypeDeclaration());
        }
        return singletonList(typeOfScope.asReferenceType().getTypeDeclaration());
    }
    ResolvedType typeOfScope = JavaParserFacade.get(typeSolver).getTypeOfThisIn(wrappedNode);
    return singletonList(typeOfScope.asReferenceType().getTypeDeclaration());
}

Example 70 with ResolvedType

use of com.github.javaparser.resolution.types.ResolvedType in project javaparser by javaparser.

the class MethodDeclarationCommonLogic method resolveTypeVariables.

public MethodUsage resolveTypeVariables(Context context, List<ResolvedType> parameterTypes) {
    ResolvedType returnType = replaceTypeParams(methodDeclaration.getReturnType(), typeSolver, context);
    List<ResolvedType> params = new ArrayList<>();
    for (int i = 0; i < methodDeclaration.getNumberOfParams(); i++) {
        ResolvedType replaced = replaceTypeParams(methodDeclaration.getParam(i).getType(), typeSolver, context);
        params.add(replaced);
    }
    // We now look at the type parameter for the method which we can derive from the parameter types
    // and then we replace them in the return type
    // Map<TypeParameterDeclaration, Type> determinedTypeParameters = new HashMap<>();
    InferenceContext inferenceContext = new InferenceContext(MyObjectProvider.INSTANCE);
    for (int i = 0; i < methodDeclaration.getNumberOfParams() - (methodDeclaration.hasVariadicParameter() ? 1 : 0); i++) {
        ResolvedType formalParamType = methodDeclaration.getParam(i).getType();
        ResolvedType actualParamType = parameterTypes.get(i);
        inferenceContext.addPair(formalParamType, actualParamType);
    }
    returnType = inferenceContext.resolve(inferenceContext.addSingle(returnType));
    return new MethodUsage(methodDeclaration, params, returnType);
}