| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * 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.jetbrains.rest.completion; |
| |
| import com.intellij.codeInsight.completion.*; |
| import com.intellij.codeInsight.lookup.LookupElementBuilder; |
| import com.intellij.patterns.PsiElementPattern; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.ProcessingContext; |
| import com.jetbrains.rest.RestTokenTypes; |
| import com.jetbrains.rest.psi.RestReference; |
| import com.jetbrains.rest.psi.RestReferenceTarget; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import static com.intellij.patterns.PlatformPatterns.psiElement; |
| |
| /** |
| * User : catherine |
| */ |
| public class ReferenceCompletionContributor extends CompletionContributor { |
| public static final PsiElementPattern.Capture<PsiElement> REFERENCE_PATTERN = |
| psiElement().afterSibling(psiElement().withElementType(RestTokenTypes.EXPLISIT_MARKUP_START)); |
| |
| public static final PsiElementPattern.Capture<PsiElement> PATTERN = |
| psiElement().andOr(psiElement().withParent(REFERENCE_PATTERN), REFERENCE_PATTERN); |
| |
| public ReferenceCompletionContributor() { |
| extend(CompletionType.BASIC, PATTERN, |
| new CompletionProvider<CompletionParameters>() { |
| @Override |
| protected void addCompletions(@NotNull CompletionParameters parameters, |
| ProcessingContext context, |
| @NotNull CompletionResultSet result) { |
| PsiElement original = parameters.getPosition(); |
| PsiFile file = original.getContainingFile(); |
| int offset = parameters.getOffset(); |
| String prefix = getPrefix(offset, file); |
| |
| if (prefix.length() > 0) { |
| result = result.withPrefixMatcher(prefix); |
| } |
| RestReference[] elements = PsiTreeUtil.getChildrenOfType(file, RestReference.class); |
| RestReferenceTarget[] targets = PsiTreeUtil.getChildrenOfType(file, RestReferenceTarget.class); |
| Set<String> names = new HashSet<String>(); |
| if (targets != null) { |
| for (RestReferenceTarget t : targets) { |
| names.add(t.getReferenceName()); |
| } |
| } |
| |
| if (elements != null) { |
| for (RestReference e : elements) { |
| String name = e.getReferenceText(); |
| if (! names.contains(name)) { |
| if ((name.startsWith("[") && name.endsWith("]")) || |
| (name.startsWith("|") && name.endsWith("|"))) |
| result.addElement(LookupElementBuilder.create(name)); |
| else if (name.equals("__")) |
| result.addElement(LookupElementBuilder.create(name + ":")); |
| else { |
| if (name.startsWith("_")) name = "\\"+name; |
| result.addElement(LookupElementBuilder.create("_" + name + ":")); |
| } |
| } |
| } |
| } |
| } |
| |
| private String getPrefix(int offset, PsiFile file) { |
| if (offset > 0) { |
| offset--; |
| } |
| final String text = file.getText(); |
| StringBuilder prefixBuilder = new StringBuilder(); |
| while(offset > 0 && (Character.isLetterOrDigit(text.charAt(offset)) || text.charAt(offset) == '_' |
| || text.charAt(offset) == '[') || text.charAt(offset) == '|') { |
| prefixBuilder.insert(0, text.charAt(offset)); |
| if (text.charAt(offset) == '_' || text.charAt(offset) == '[' || text.charAt(offset) == '|') { |
| break; |
| } |
| offset--; |
| } |
| return prefixBuilder.toString(); |
| } |
| } |
| ); |
| } |
| } |