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/*
* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2016 The JavaParser Team.
*
* This file is part of JavaParser.
*
* JavaParser can be used either under the terms of
* a) the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* b) the terms of the Apache License
*
* You should have received a copy of both licenses in LICENCE.LGPL and
* LICENCE.APACHE. Please refer to those files for details.
*
* JavaParser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
package com.github.javaparser;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.AnnotationMemberDeclaration;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.expr.ArrayCreationExpr;
import com.github.javaparser.ast.expr.CastExpr;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.expr.LambdaExpr;
import com.github.javaparser.ast.stmt.*;
import com.github.javaparser.ast.type.ClassOrInterfaceType;
import com.github.javaparser.ast.type.IntersectionType;
import com.github.javaparser.ast.type.Type;
import org.junit.Test;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Optional;
import static com.github.javaparser.ParseStart.COMPILATION_UNIT;
import static com.github.javaparser.Providers.provider;
import static com.github.javaparser.Range.range;
import static com.github.javaparser.utils.CodeGenerationUtils.mavenModuleRoot;
import static com.github.javaparser.utils.TestUtils.assertInstanceOf;
import static com.github.javaparser.utils.Utils.EOL;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class JavaParserTest {
@Test
public void rangeOfAnnotationMemberDeclarationIsCorrect() {
String code = "@interface AD { String foo(); }";
CompilationUnit cu = JavaParser.parse(code);
AnnotationMemberDeclaration memberDeclaration = cu.getAnnotationDeclarationByName("AD").get().getMember(0).asAnnotationMemberDeclaration();
assertEquals(true, memberDeclaration.getRange().isPresent());
assertEquals(new Range(new Position(1, 17), new Position(1, 29)), memberDeclaration.getRange().get());
}
@Test
public void rangeOfAnnotationMemberDeclarationWithArrayTypeIsCorrect() {
String code = "@interface AD { String[] foo(); }";
CompilationUnit cu = JavaParser.parse(code);
AnnotationMemberDeclaration memberDeclaration = cu.getAnnotationDeclarationByName("AD").get().getMember(0).asAnnotationMemberDeclaration();
assertEquals(true, memberDeclaration.getRange().isPresent());
assertEquals(new Range(new Position(1, 17), new Position(1, 31)), memberDeclaration.getRange().get());
}
@Test
public void rangeOfArrayCreationLevelWithExpressionIsCorrect() {
String code = "new int[123][456]";
ArrayCreationExpr expression = JavaParser.parseExpression(code);
Optional<Range> range;
range = expression.getLevels().get(0).getRange();
assertEquals(true, range.isPresent());
assertEquals(new Range(new Position(1, 8), new Position(1, 12)), range.get());
range = expression.getLevels().get(1).getRange();
assertEquals(true, range.isPresent());
assertEquals(new Range(new Position(1, 13), new Position(1, 17)), range.get());
}
@Test
public void rangeOfArrayCreationLevelWithoutExpressionIsCorrect() {
String code = "new int[][]";
ArrayCreationExpr expression = JavaParser.parseExpression(code);
Optional<Range> range;
range = expression.getLevels().get(0).getRange();
assertEquals(true, range.isPresent());
assertEquals(new Range(new Position(1, 8), new Position(1, 9)), range.get());
range = expression.getLevels().get(1).getRange();
assertEquals(true, range.isPresent());
assertEquals(new Range(new Position(1, 10), new Position(1, 11)), range.get());
}
@Test
public void parseErrorContainsLocation() {
ParseResult<CompilationUnit> result = new JavaParser().parse(COMPILATION_UNIT, provider("class X { // blah"));
Problem problem = result.getProblem(0);
assertEquals(range(1, 9, 1, 17), problem.getLocation().get().toRange().get());
assertEquals("Parse error. Found <EOF>, expected one of \";\" \"<\" \"@\" \"abstract\" \"boolean\" \"byte\" \"char\" \"class\" \"default\" \"double\" \"enum\" \"exports\" \"final\" \"float\" \"int\" \"interface\" \"long\" \"module\" \"native\" \"open\" \"opens\" \"private\" \"protected\" \"provides\" \"public\" \"requires\" \"short\" \"static\" \"strictfp\" \"synchronized\" \"to\" \"transient\" \"transitive\" \"uses\" \"void\" \"volatile\" \"with\" \"{\" \"}\" <IDENTIFIER>", problem.getMessage());
assertInstanceOf(ParseException.class, problem.getCause().get());
}
@Test
public void parseIntersectionType() {
String code = "(Runnable & Serializable) (() -> {})";
Expression expression = JavaParser.parseExpression(code);
Type type = expression.asCastExpr().getType();
assertTrue(type instanceof IntersectionType);
IntersectionType intersectionType = type.asIntersectionType();
assertEquals(2, intersectionType.getElements().size());
assertTrue(intersectionType.getElements().get(0) instanceof ClassOrInterfaceType);
assertEquals("Runnable", intersectionType.getElements().get(0).asClassOrInterfaceType().getNameAsString());
assertTrue(intersectionType.getElements().get(1) instanceof ClassOrInterfaceType);
assertEquals("Serializable", intersectionType.getElements().get(1).asClassOrInterfaceType().getNameAsString());
}
@Test
public void rangeOfIntersectionType() {
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();
Type type = castExpr.getType();
assertEquals(range(3, 13, 3, 54), type.getRange().get());
}
@Test
public void rangeOfCast() {
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();
assertEquals(range(3, 12, 3, 101), castExpr.getRange().get());
}
@Test
public void rangeOfCastNonIntersection() {
String code = "class A {" + EOL
+ " Object f() {" + EOL
+ " return (Comparator<Map.Entry<K, V>> )(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();
assertEquals(range(3, 12, 3, 101), castExpr.getRange().get());
}
@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());
}
@Test
public void rangeOfLambdaBody() {
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();
Statement lambdaBody = lambdaExpr.getBody();
assertEquals(range(3, 68, 3, 101), lambdaBody.getRange().get());
}
@Test
public void testNotStoringTokens() {
JavaParser javaParser = new JavaParser(new ParserConfiguration().setStoreTokens(false));
ParseResult<CompilationUnit> result = javaParser.parse(ParseStart.COMPILATION_UNIT, provider("class X{}"));
assertEquals(false, result.getTokens().isPresent());
}
@Test(expected = ParseProblemException.class)
public void trailingCodeIsAnError() {
JavaParser.parseBlock("{} efijqoifjqefj");
}
@Test
public void trailingWhitespaceIsIgnored() {
BlockStmt blockStmt = JavaParser.parseBlock("{} // hello");
assertEquals("{}", blockStmt.getTokenRange().get().toString());
}
@Test
public void everyTokenHasACategory() throws IOException {
final int tokenCount = GeneratedJavaParserConstants.tokenImage.length;
Path tokenTypesPath = mavenModuleRoot(JavaParserTest.class).resolve("../javaparser-core/src/main/java/com/github/javaparser/TokenTypes.java");
CompilationUnit tokenTypesCu = JavaParser.parse(tokenTypesPath);
// -1 to take off the default: case.
int switchEntries = tokenTypesCu.findAll(SwitchEntryStmt.class).size()-1;
// The amount of "case XXX:" in TokenTypes.java should be equal to the amount of tokens JavaCC knows about:
assertEquals(tokenCount, switchEntries);
}
@Test
public void parsingInitializedAndUnitializedVarsInForStmt() {
ForStmt forStmt = JavaParser.parseStatement("for(int a,b=0;;){}").asForStmt();
assertEquals(1, forStmt.getInitialization().size());
assertEquals(true, forStmt.getInitialization().get(0).isVariableDeclarationExpr());
assertEquals(2, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().size());
assertEquals("a", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getNameAsString());
assertEquals("b", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getNameAsString());
assertEquals(false, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getInitializer().isPresent());
assertEquals(true, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getInitializer().isPresent());
}
@Test
public void parsingInitializedAndUnitializedVarsInForStmtComplexCase() {
// See issue 1281
ForStmt forStmt = JavaParser.parseStatement("for(int i, j = array2.length - 1;;){}").asForStmt();
assertEquals(1, forStmt.getInitialization().size());
assertEquals(true, forStmt.getInitialization().get(0).isVariableDeclarationExpr());
assertEquals(2, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().size());
assertEquals("i", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getNameAsString());
assertEquals("j", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getNameAsString());
assertEquals(false, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getInitializer().isPresent());
assertEquals(true, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getInitializer().isPresent());
}
}
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