001    /*
002     * Copyright 2010-2013 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.jet.lang.resolve;
018    
019    import com.intellij.psi.PsiElement;
020    import com.intellij.psi.PsiElementVisitor;
021    import com.intellij.psi.PsiErrorElement;
022    import org.jetbrains.annotations.NotNull;
023    import org.jetbrains.annotations.Nullable;
024    import org.jetbrains.jet.lang.diagnostics.Diagnostic;
025    import org.jetbrains.jet.lang.diagnostics.DiagnosticHolder;
026    import org.jetbrains.jet.lang.diagnostics.DiagnosticUtils;
027    import org.jetbrains.jet.lang.psi.JetIdeTemplate;
028    import org.jetbrains.jet.lang.psi.JetTreeVisitorVoid;
029    import org.jetbrains.jet.lang.psi.JetVisitorVoid;
030    
031    import java.util.ArrayList;
032    import java.util.List;
033    
034    public class AnalyzingUtils {
035    
036        public abstract static class PsiErrorElementVisitor extends JetTreeVisitorVoid {
037            @Override
038            public abstract void visitErrorElement(PsiErrorElement element);
039        }
040    
041    
042        public static void checkForSyntacticErrors(@NotNull PsiElement root) {
043            root.acceptChildren(new PsiErrorElementVisitor() {
044                @Override
045                public void visitErrorElement(PsiErrorElement element) {
046                    throw new IllegalArgumentException(element.getErrorDescription() + "; looking at " + element.getNode().getElementType() + " '" + element.getText() + DiagnosticUtils.atLocation(element));
047                }
048            });
049        }
050        
051        public static List<PsiErrorElement> getSyntaxErrorRanges(@NotNull PsiElement root) {
052            final ArrayList<PsiErrorElement> r = new ArrayList<PsiErrorElement>();
053            root.acceptChildren(new PsiErrorElementVisitor() {
054                @Override
055                public void visitErrorElement(PsiErrorElement element) {
056                    r.add(element);
057                }
058            });
059            return r;
060        }
061    
062        public static void throwExceptionOnErrors(BindingContext bindingContext) {
063            for (Diagnostic diagnostic : bindingContext.getDiagnostics()) {
064                DiagnosticHolder.THROW_EXCEPTION.report(diagnostic);
065            }
066        }
067    
068        // --------------------------------------------------------------------------------------------------------------------------
069    
070        public static String formDebugNameForBindingTrace(@NotNull String debugName, @Nullable Object resolutionSubjectForMessage) {
071            if (resolutionSubjectForMessage instanceof PsiElement) {
072                resolutionSubjectForMessage = ((PsiElement) resolutionSubjectForMessage).getText();
073            }
074            if (resolutionSubjectForMessage != null) {
075                return debugName + " '" + resolutionSubjectForMessage + "'";
076            }
077            return debugName;
078        }
079    }