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/*
* Copyright 2000-2009 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.intellij.codeInsight.editorActions;
import com.intellij.openapi.editor.highlighter.HighlighterIterator;
import com.intellij.psi.*;
import com.intellij.psi.impl.source.tree.ElementType;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.TokenSet;
import org.jetbrains.annotations.NotNull;
/**
* @author peter
*/
public class JavaQuoteHandler extends SimpleTokenSetQuoteHandler implements JavaLikeQuoteHandler {
private final TokenSet concatenatableStrings;
public JavaQuoteHandler() {
super(new IElementType[] { JavaTokenType.STRING_LITERAL, JavaTokenType.CHARACTER_LITERAL});
concatenatableStrings = TokenSet.create(JavaTokenType.STRING_LITERAL);
}
@Override
public boolean isOpeningQuote(HighlighterIterator iterator, int offset) {
boolean openingQuote = super.isOpeningQuote(iterator, offset);
if (openingQuote) {
// check escape next
if (!iterator.atEnd()) {
iterator.retreat();
if (!iterator.atEnd() && StringEscapesTokenTypes.STRING_LITERAL_ESCAPES.contains(iterator.getTokenType())) {
openingQuote = false;
}
iterator.advance();
}
}
return openingQuote;
}
@Override
public boolean isClosingQuote(HighlighterIterator iterator, int offset) {
boolean closingQuote = super.isClosingQuote(iterator, offset);
if (closingQuote) {
// check escape next
if (!iterator.atEnd()) {
iterator.advance();
if (!iterator.atEnd() && StringEscapesTokenTypes.STRING_LITERAL_ESCAPES.contains(iterator.getTokenType())) {
closingQuote = false;
}
iterator.retreat();
}
}
return closingQuote;
}
@Override
public TokenSet getConcatenatableStringTokenTypes() {
return concatenatableStrings;
}
@Override
public String getStringConcatenationOperatorRepresentation() {
return "+";
}
@Override
public TokenSet getStringTokenTypes() {
return myLiteralTokenSet;
}
@Override
public boolean isAppropriateElementTypeForLiteral(final @NotNull IElementType tokenType) {
return isAppropriateElementTypeForLiteralStatic(tokenType);
}
@Override
public boolean needParenthesesAroundConcatenation(final PsiElement element) {
// example code: "some string".length() must become ("some" + " string").length()
return element.getParent() instanceof PsiLiteralExpression && element.getParent().getParent() instanceof PsiReferenceExpression;
}
public static boolean isAppropriateElementTypeForLiteralStatic(final IElementType tokenType) {
return ElementType.JAVA_COMMENT_OR_WHITESPACE_BIT_SET.contains(tokenType)
|| tokenType == JavaTokenType.SEMICOLON
|| tokenType == JavaTokenType.COMMA
|| tokenType == JavaTokenType.RPARENTH
|| tokenType == JavaTokenType.RBRACKET
|| tokenType == JavaTokenType.RBRACE
|| tokenType == JavaTokenType.STRING_LITERAL
|| tokenType == JavaTokenType.CHARACTER_LITERAL;
}
}
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