/*
* Copyright 2009 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.javac;
import com.google.gwt.dev.javac.testing.impl.StaticJavaResource;
import com.google.gwt.dev.jjs.SourceInfo;
import com.google.gwt.dev.js.ast.JsContext;
import com.google.gwt.dev.js.ast.JsNameRef;
import com.google.gwt.dev.js.ast.JsVisitor;
import org.eclipse.jdt.core.compiler.CategorizedProblem;
import java.util.ArrayList;
import java.util.List;
/**
* Tests {@link JsniMethodCollector}.
*/
public class JsniMethodCollectorTest extends CompilationStateTestBase {
/**
* TODO: currently JSNI does not parse character position. Turn this on (and
* delete it, actually) when it does.
*/
public static final boolean JSNI_PARSES_SOURCE_POSITION = false;
public void testErrorPosition() {
StringBuilder code = new StringBuilder();
code.append("class Foo {\n");
code.append(" native void m(Object o) /*-{\n");
code.append(" o.@Foo::m(Ljava/lang/String);\n");
code.append(" }-*/;\n");
code.append("}\n");
String source = code.toString();
CategorizedProblem[] problems = getProblems("Foo", source);
assertEquals(1, problems.length);
CategorizedProblem problem = problems[0];
if (JSNI_PARSES_SOURCE_POSITION) {
assertEquals(source.indexOf('@'), problem.getSourceStart());
}
assertEquals(3, problem.getSourceLineNumber());
assertTrue(problem.isError());
assertEquals(
"Referencing method 'Foo.m(Ljava/lang/String)': unable to resolve method in class 'Foo'",
problem.getMessage());
}
public void testMalformedJsniRefPosition() {
StringBuilder code = new StringBuilder();
code.append("class Foo {\n");
code.append(" native void m() /*-{\n");
code.append(" @Bar;\n");
code.append(" }-*/;\n");
code.append("}\n");
String source = code.toString();
CategorizedProblem[] problems = getProblems("Foo", source);
assertEquals(1, problems.length);
CategorizedProblem problem = problems[0];
assertEquals(source.indexOf('@') + "Bar".length(), problem.getSourceStart());
assertEquals(3, problem.getSourceLineNumber());
assertTrue(problem.isError());
assertEquals("Expected \":\" in JSNI reference\n> @Bar;\n> --------^",
problem.getMessage());
}
public void testMalformedJsniRefPositionWithExtraLines() {
StringBuilder code = new StringBuilder();
code.append("class Foo {\n");
code.append(" native\nvoid\nm()\n\n\n/*-{\n\n");
code.append(" @Bar;\n");
code.append(" }-*/;\n");
code.append("}\n");
String source = code.toString();
CategorizedProblem[] problems = getProblems("Foo", source);
assertEquals(1, problems.length);
CategorizedProblem problem = problems[0];
assertEquals(source.indexOf('@') + "Bar".length(), problem.getSourceStart());
assertEquals(9, problem.getSourceLineNumber());
assertTrue(problem.isError());
assertEquals("Expected \":\" in JSNI reference\n> @Bar;\n> --------^",
problem.getMessage());
}
public void testSourcePosition() {
StringBuilder code = new StringBuilder();
code.append("class Foo {\n");
code.append(" native void m(Object o) /*-{\n");
code.append(" o.@Foo::m(Ljava/lang/Object);\n");
code.append(" }-*/;\n");
code.append("}\n");
String source = code.toString();
List<JsNameRef> foundRefs = findJsniRefs("Foo", source);
assertEquals(1, foundRefs.size());
JsNameRef ref = foundRefs.get(0);
SourceInfo info = ref.getSourceInfo();
if (JSNI_PARSES_SOURCE_POSITION) {
assertEquals(source.indexOf('@'), info.getStartPos());
}
assertEquals(3, info.getStartLine());
}
private List<JsNameRef> findJsniRefs(String typeName, final String source) {
addGeneratedUnits(new StaticJavaResource(typeName, source));
CompilationUnit unit = state.getCompilationUnitMap().get(typeName);
assertNotNull(unit);
List<JsniMethod> jsniMethods = unit.getJsniMethods();
assertEquals(1, jsniMethods.size());
JsniMethod jsniMethod = jsniMethods.get(0);
final List<JsNameRef> foundRefs = new ArrayList<JsNameRef>();
new JsVisitor() {
@Override
public void endVisit(JsNameRef x, JsContext ctx) {
if (x.getIdent().startsWith("@")) {
foundRefs.add(x);
}
}
}.accept(jsniMethod.function());
return foundRefs;
}
private CategorizedProblem[] getProblems(String typeName, String source) {
addGeneratedUnits(new StaticJavaResource(typeName, source));
CompilationUnit unit = state.getCompilationUnitMap().get(typeName);
assertNotNull(unit);
CategorizedProblem[] problems = unit.getProblems();
return problems;
}
}