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

Example 11 with LambdaExpr

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

the class JavaParserTest method rangeOfLambda.

@Test
public void rangeOfLambda() {
    String code = "class A {" + EOL + "  Object f() {" + EOL + "    return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL + "}}";
    CompilationUnit cu = JavaParser.parse(code);
    MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
    ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
    CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
    LambdaExpr lambdaExpr = castExpr.getExpression().asLambdaExpr();
    assertEquals(range(3, 56, 3, 101), lambdaExpr.getRange().get());
    assertEquals(GeneratedJavaParserConstants.LPAREN, lambdaExpr.getTokenRange().get().getBegin().getKind());
    assertEquals(GeneratedJavaParserConstants.RPAREN, lambdaExpr.getTokenRange().get().getEnd().getKind());
}

Example 12 with LambdaExpr

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

the class LambdaExprContextResolutionTest method solveParameterOfLambdaInMethodCallExpr.

@Test
public void solveParameterOfLambdaInMethodCallExpr() {
    CompilationUnit cu = parseSample("Lambda");
    com.github.javaparser.ast.body.ClassOrInterfaceDeclaration clazz = Navigator.demandClass(cu, "Agenda");
    MethodDeclaration method = Navigator.demandMethod(clazz, "lambdaMap");
    ReturnStmt returnStmt = Navigator.findReturnStmt(method);
    MethodCallExpr methodCallExpr = (MethodCallExpr) returnStmt.getExpression().get();
    LambdaExpr lambdaExpr = (LambdaExpr) methodCallExpr.getArguments().get(0);
    Context context = new LambdaExprContext(lambdaExpr, typeSolver);
    Optional<Value> ref = context.solveSymbolAsValue("p", typeSolver);
    assertTrue(ref.isPresent());
    assertEquals("? super java.lang.String", ref.get().getType().describe());
}