/*
* Copyright 2012-2014 Sergey Ignatov
*
* 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 org.intellij.erlang.search;
import com.intellij.lang.HelpID;
import com.intellij.lang.cacheBuilder.WordOccurrence;
import com.intellij.lang.cacheBuilder.WordsScanner;
import com.intellij.lang.findUsages.FindUsagesProvider;
import com.intellij.openapi.util.TextRange;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.ElementDescriptionUtil;
import com.intellij.psi.PsiElement;
import com.intellij.psi.tree.IElementType;
import com.intellij.usageView.UsageViewLongNameLocation;
import com.intellij.usageView.UsageViewNodeTextLocation;
import com.intellij.usageView.UsageViewTypeLocation;
import com.intellij.util.Processor;
import org.intellij.erlang.ErlangTypes;
import org.intellij.erlang.parser.ErlangLexer;
import org.intellij.erlang.psi.*;
import org.jetbrains.annotations.NotNull;
public class ErlangFindUsagesProvider implements FindUsagesProvider {
@Override
public WordsScanner getWordsScanner() {
return new WordsScanner() {
@Override
public void processWords(CharSequence fileText, Processor<WordOccurrence> processor) {
ErlangLexer lexer = new ErlangLexer();
lexer.start(fileText);
IElementType tokenType;
while ((tokenType = lexer.getTokenType()) != null) {
//TODO process occurrences in string literals and comments
if (tokenType == ErlangTypes.ERL_ATOM_NAME || tokenType == ErlangTypes.ERL_VAR) {
int tokenStart = lexer.getTokenStart();
for (TextRange wordRange : StringUtil.getWordIndicesIn(lexer.getTokenText())) {
int start = tokenStart + wordRange.getStartOffset();
int end = tokenStart + wordRange.getEndOffset();
processor.process(new WordOccurrence(fileText, start, end, WordOccurrence.Kind.CODE));
}
}
lexer.advance();
}
}
};
}
@Override
public boolean canFindUsagesFor(@NotNull PsiElement o) {
return o instanceof ErlangFunction || o instanceof ErlangQVar
|| o instanceof ErlangRecordDefinition || o instanceof ErlangModule
|| o instanceof ErlangMacrosDefinition || o instanceof ErlangTypedExpr
|| o instanceof ErlangTypeDefinition || o instanceof ErlangQAtom
;
}
@Override
public String getHelpId(@NotNull PsiElement psiElement) {
return HelpID.FIND_OTHER_USAGES;
}
@NotNull
@Override
public String getType(@NotNull PsiElement element) {
return ElementDescriptionUtil.getElementDescription(element, UsageViewTypeLocation.INSTANCE);
}
@NotNull
@Override
public String getDescriptiveName(@NotNull PsiElement element) {
return ElementDescriptionUtil.getElementDescription(element, UsageViewLongNameLocation.INSTANCE);
}
@NotNull
@Override
public String getNodeText(@NotNull PsiElement element, boolean useFullName) {
return ElementDescriptionUtil.getElementDescription(element, UsageViewNodeTextLocation.INSTANCE);
}
}