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/*
* Copyright 2016 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.jjs.impl;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.TreeLogger.Type;
import com.google.gwt.dev.jjs.HasSourceInfo;
import com.google.gwt.dev.jjs.ast.JDeclaredType;
import com.google.gwt.dev.jjs.ast.JField;
import com.google.gwt.dev.jjs.ast.JMember;
import com.google.gwt.dev.jjs.ast.JMethod;
import com.google.gwt.dev.jjs.ast.JType;
import com.google.gwt.dev.util.log.AbstractTreeLogger;
import com.google.gwt.thirdparty.guava.common.collect.Iterables;
import com.google.gwt.thirdparty.guava.common.collect.Multimap;
import com.google.gwt.thirdparty.guava.common.collect.Ordering;
import com.google.gwt.thirdparty.guava.common.collect.Sets;
import com.google.gwt.thirdparty.guava.common.collect.TreeMultimap;
import java.util.Set;
import java.util.TreeSet;
/**
* Abstract base class for error checking in the full AST.
*/
public abstract class AbstractRestrictionChecker {
private Multimap errorsByFilename
= TreeMultimap.create(Ordering.natural(), AbstractTreeLogger.LOG_LINE_COMPARATOR);
private Multimap warningsByFilename
= TreeMultimap.create(Ordering.natural(), AbstractTreeLogger.LOG_LINE_COMPARATOR);
private Set suggestionMessages = Sets.newLinkedHashSet();
protected static String getDescription(HasSourceInfo hasSourceInfo) {
if (hasSourceInfo instanceof JDeclaredType) {
return getTypeDescription((JDeclaredType) hasSourceInfo);
} else {
return getMemberDescription((JMember) hasSourceInfo);
}
}
protected static String getMemberDescription(JMember member) {
if (member instanceof JField) {
return String.format("'%s'", JjsUtils.getReadableDescription(member));
}
JMethod method = (JMethod) member;
if ((method.isSyntheticAccidentalOverride() || method.isSynthetic())
// Some synthetic methods are created by JDT, it is not safe to assume
// that they will always be overriding and crash the compiler.
&& !method.getOverriddenMethods().isEmpty()) {
JMethod overridenMethod = Iterables.getFirst(method.getOverriddenMethods(), null);
return String.format("'%s' (exposed by '%s')",
JjsUtils.getReadableDescription(overridenMethod),
JjsUtils.getReadableDescription(method.getEnclosingType()));
}
return String.format("'%s'", JjsUtils.getReadableDescription(method));
}
private static String getTypeDescription(JDeclaredType type) {
return String.format("'%s'", JjsUtils.getReadableDescription(type));
}
protected void logError(String format, JType type) {
logError(type, format, JjsUtils.getReadableDescription(type));
}
protected void logError(HasSourceInfo hasSourceInfo, String format, Object... args) {
errorsByFilename.put(hasSourceInfo.getSourceInfo().getFileName(),
String.format("Line %d: ", hasSourceInfo.getSourceInfo().getStartLine())
+ String.format(format, args));
}
protected void logWarning(HasSourceInfo hasSourceInfo, String format, Object... args) {
warningsByFilename.put(hasSourceInfo.getSourceInfo().getFileName(),
String.format("Line %d: ", hasSourceInfo.getSourceInfo().getStartLine())
+ String.format(format, args));
}
protected void logSuggestion(String format, Object... args) {
suggestionMessages.add(String.format(format, args));
}
protected boolean reportErrorsAndWarnings(TreeLogger logger) {
TreeSet filenamesToReport = Sets.newTreeSet(
Iterables.concat(errorsByFilename.keySet(), warningsByFilename.keySet()));
for (String fileName : filenamesToReport) {
boolean hasErrors = !errorsByFilename.get(fileName).isEmpty();
TreeLogger branch = logger.branch(
Type.INFO, (hasErrors ? "Errors" : "Warnings") + " in " + fileName);
for (String message : errorsByFilename.get(fileName)) {
branch.log(Type.ERROR, message);
}
for (String message :warningsByFilename.get(fileName)) {
branch.log(Type.WARN, message);
}
}
for (String message : suggestionMessages) {
logger.log(Type.WARN, message);
}
return !errorsByFilename.isEmpty();
}
}
