Examples with ExpressionStmt com.github.javaparser.ast.stmt.ExpressionStmt used on opensource projects

Example 16 with ExpressionStmt

use of com.github.javaparser.ast.stmt.ExpressionStmt in project javaparser by javaparser.

the class GenericsResolutionTest method resolveUsageOfGenericFieldAdvancedCase.

@Test
public void resolveUsageOfGenericFieldAdvancedCase() {
    CompilationUnit cu = parseSample("Generics");
    ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "SomeCollection");
    MethodDeclaration method = Navigator.demandMethod(clazz, "foo2");
    ExpressionStmt stmt = (ExpressionStmt) method.getBody().get().getStatements().get(0);
    Expression expression = stmt.getExpression();
    ResolvedType type = JavaParserFacade.get(new ReflectionTypeSolver()).getType(expression);
    assertEquals(false, type.isTypeVariable());
    assertEquals("java.util.List<java.lang.String>", type.describe());
    assertEquals(1, type.asReferenceType().typeParametersValues().size());
    assertEquals(false, type.asReferenceType().typeParametersValues().get(0).isTypeVariable());
    assertEquals("java.lang.String", type.asReferenceType().typeParametersValues().get(0).describe());
}

Example 17 with ExpressionStmt

use of com.github.javaparser.ast.stmt.ExpressionStmt in project javaparser by javaparser.

the class NodeWithStatements method addStatement.

public default T addStatement(Expression expr) {
    ExpressionStmt statement = new ExpressionStmt(expr);
    expr.setParentNode(statement);
    return addStatement(statement);
}

Example 18 with ExpressionStmt

use of com.github.javaparser.ast.stmt.ExpressionStmt 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 19 with ExpressionStmt

use of com.github.javaparser.ast.stmt.ExpressionStmt in project javaparser by javaparser.

the class ArrayTypeTest method getVariableDeclarationWithArrays.

@Test
public void getVariableDeclarationWithArrays() {
    ExpressionStmt variableDeclarationStatement = parseStatement("@C int @A[] @B[] a @X[] @Y[];").asExpressionStmt();
    VariableDeclarationExpr variableDeclarationExpr = variableDeclarationStatement.getExpression().asVariableDeclarationExpr();
    ArrayType arrayType1 = variableDeclarationExpr.getVariable(0).getType().asArrayType();
    ArrayType arrayType2 = arrayType1.getComponentType().asArrayType();
    ArrayType arrayType3 = arrayType2.getComponentType().asArrayType();
    ArrayType arrayType4 = arrayType3.getComponentType().asArrayType();
    PrimitiveType elementType = arrayType4.getComponentType().asPrimitiveType();
    assertThat(arrayType1.getAnnotations()).containsExactly(new MarkerAnnotationExpr(parseName("A")));
    assertThat(arrayType2.getAnnotations()).containsExactly(new MarkerAnnotationExpr(parseName("B")));
    assertThat(arrayType3.getAnnotations()).containsExactly(new MarkerAnnotationExpr(parseName("X")));
    assertThat(arrayType4.getAnnotations()).containsExactly(new MarkerAnnotationExpr(parseName("Y")));
    assertThat(elementType.getType()).isEqualTo(PrimitiveType.Primitive.INT);
    assertThat(variableDeclarationExpr.getAnnotations()).containsExactly(new MarkerAnnotationExpr(parseName("C")));
    assertThat(arrayType1.getParentNode().get().getParentNode().get()).isSameAs(variableDeclarationExpr);
}

Example 20 with ExpressionStmt

use of com.github.javaparser.ast.stmt.ExpressionStmt in project javaparser by javaparser.

the class LexicalDifferenceCalculatorTest method csmModelAfterAddingStatementToEmptyBlock.

@Test
public void csmModelAfterAddingStatementToEmptyBlock() throws IOException {
    LexicalDifferenceCalculator ldc = new LexicalDifferenceCalculator();
    considerExample("ASimpleClassWithMoreFormatting_step3");
    MethodDeclaration setter = cu.getClassByName("MyRenamedClass").get().getMethodsByName("setAField").get(0);
    Statement assignStatement = new ExpressionStmt(new AssignExpr(new FieldAccessExpr(new ThisExpr(), "aField"), new NameExpr("aField"), AssignExpr.Operator.ASSIGN));
    LexicalDifferenceCalculator.CalculatedSyntaxModel calculatedSyntaxModel = ldc.calculatedSyntaxModelAfterListAddition(ConcreteSyntaxModel.forClass(BlockStmt.class), ObservableProperty.STATEMENTS, setter.getBody().get().getStatements(), 0, assignStatement);
    int index = 0;
    assertEquals(CsmElement.token(GeneratedJavaParserConstants.LBRACE), calculatedSyntaxModel.elements.get(index++));
    assertEquals(CsmElement.newline(), calculatedSyntaxModel.elements.get(index++));
    assertEquals(CsmElement.indent(), calculatedSyntaxModel.elements.get(index++));
    assertTrue(isChild(calculatedSyntaxModel.elements.get(index++), ExpressionStmt.class));
    assertEquals(CsmElement.newline(), calculatedSyntaxModel.elements.get(index++));
    assertEquals(CsmElement.unindent(), calculatedSyntaxModel.elements.get(index++));
    assertEquals(CsmElement.token(GeneratedJavaParserConstants.RBRACE), calculatedSyntaxModel.elements.get(index++));
    assertEquals(index, calculatedSyntaxModel.elements.size());
}