Examples with Expression com.github.javaparser.ast.expr.Expression used on opensource projects

Example 36 with Expression

use of com.github.javaparser.ast.expr.Expression in project javaparser by javaparser.

the class JavaParserFacadeResolutionTest method solveTryWithResourceVariable.

// See issue 119
@Test
public void solveTryWithResourceVariable() {
    String code = "import java.util.Scanner; class A { void foo() { try (Scanner sc = new Scanner(System.in)) {\n" + "    sc.nextLine();\n" + "} } }";
    CompilationUnit cu = JavaParser.parse(code);
    MethodCallExpr methodCallExpr = Navigator.findMethodCall(cu, "nextLine").get();
    Expression scope = methodCallExpr.getScope().get();
    ResolvedType type = JavaParserFacade.get(new ReflectionTypeSolver()).getType(scope);
    assertEquals(true, type.isReferenceType());
    assertEquals("java.util.Scanner", type.asReferenceType().getQualifiedName());
}

Example 37 with Expression

use of com.github.javaparser.ast.expr.Expression in project javaparser by javaparser.

the class LambdaResolutionTest method lambdaReduce.

@Test
public void lambdaReduce() {
    CompilationUnit cu = parseSample("Lambda");
    com.github.javaparser.ast.body.ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "Agenda");
    MethodDeclaration method = Navigator.demandMethod(clazz, "reduce");
    ReturnStmt returnStmt = Navigator.findReturnStmt(method);
    Expression expr = returnStmt.getExpression().get();
    JavaParserFacade javaParserFacade = JavaParserFacade.get(new ReflectionTypeSolver());
    ResolvedType type1 = javaParserFacade.getType(expr);
    assertEquals("java.util.Optional<java.lang.Integer>", type1.describe());
}

Example 38 with Expression

use of com.github.javaparser.ast.expr.Expression in project javaparser by javaparser.

the class LambdaResolutionTest method lambdaBlockExplicitReturn.

@Test
public void lambdaBlockExplicitReturn() {
    CompilationUnit cu = parseSample("LambdaMulti");
    com.github.javaparser.ast.body.ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "Agenda");
    MethodDeclaration method = Navigator.demandMethod(clazz, "lambdaSingleReturn");
    ReturnStmt returnStmt = Navigator.findReturnStmt(method);
    Expression expression = returnStmt.getExpression().get();
    JavaParserFacade javaParserFacade = JavaParserFacade.get(new ReflectionTypeSolver());
    ResolvedType type = javaParserFacade.getType(expression);
    assertEquals("java.lang.String", type.describe());
}

Example 39 with Expression

use of com.github.javaparser.ast.expr.Expression in project javaparser by javaparser.

the class LambdaResolutionTest method lambdaMap.

@Test
public void lambdaMap() {
    CompilationUnit cu = parseSample("Lambda");
    com.github.javaparser.ast.body.ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "Agenda");
    MethodDeclaration m1 = Navigator.demandMethod(clazz, "lambdaMap");
    MethodDeclaration m2 = Navigator.demandMethod(clazz, "lambdaMap2");
    ReturnStmt returnStmt1 = Navigator.findReturnStmt(m1);
    ReturnStmt returnStmt2 = Navigator.findReturnStmt(m2);
    Expression e1 = returnStmt1.getExpression().get();
    Expression e2 = returnStmt2.getExpression().get();
    JavaParserFacade javaParserFacade = JavaParserFacade.get(new ReflectionTypeSolver());
    ResolvedType type1 = javaParserFacade.getType(e1);
    ResolvedType type2 = javaParserFacade.getType(e2);
    assertEquals("java.util.stream.Stream<java.lang.String>", type1.describe());
    assertEquals("java.util.stream.Stream<java.util.stream.IntStream>", type2.describe());
}

Example 40 with Expression

use of com.github.javaparser.ast.expr.Expression in project javaparser by javaparser.

the class LambdaResolutionTest method lambdaBlockMultiLineReturn.

@Test
public void lambdaBlockMultiLineReturn() {
    CompilationUnit cu = parseSample("LambdaMulti");
    com.github.javaparser.ast.body.ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "Agenda");
    MethodDeclaration method = Navigator.demandMethod(clazz, "multiLineReturn");
    ReturnStmt returnStmt = Navigator.findReturnStmt(method);
    Expression expression = returnStmt.getExpression().get();
    JavaParserFacade javaParserFacade = JavaParserFacade.get(new ReflectionTypeSolver());
    ResolvedType type = javaParserFacade.getType(expression);
    assertEquals("java.lang.String", type.describe());
}