/*
* Copyright 2010-2015 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 org.jetbrains.kotlin.idea.editor;
import com.intellij.codeInsight.editorActions.JavaBackspaceHandler;
import com.intellij.codeInsight.editorActions.JavaTypedHandler;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.ex.EditorEx;
import com.intellij.openapi.editor.highlighter.HighlighterIterator;
import com.intellij.psi.tree.TokenSet;
import org.jetbrains.kotlin.lexer.KtToken;
import org.jetbrains.kotlin.lexer.KtTokens;
final class LtGtTypingUtils {
private static final TokenSet INVALID_INSIDE_REFERENCE = TokenSet.create(KtTokens.SEMICOLON, KtTokens.LBRACE, KtTokens.RBRACE);
private LtGtTypingUtils() {
}
static void handleKotlinAutoCloseLT(Editor editor) {
JavaTypedHandler.handleAfterJavaLT(editor, KtTokens.LT, KtTokens.GT, INVALID_INSIDE_REFERENCE);
}
static boolean handleKotlinGTInsert(Editor editor) {
return JavaTypedHandler.handleJavaGT(editor, KtTokens.LT, KtTokens.GT, INVALID_INSIDE_REFERENCE);
}
static void handleKotlinLTDeletion(Editor editor, int offset) {
JavaBackspaceHandler.handleLTDeletion(editor, offset, KtTokens.LT, KtTokens.GT, INVALID_INSIDE_REFERENCE);
}
static boolean shouldAutoCloseAngleBracket(int offset, Editor editor) {
return isAfterClassIdentifier(offset, editor) || isAfterToken(offset, editor, KtTokens.FUN_KEYWORD);
}
private static boolean isAfterClassIdentifier(int offset, Editor editor) {
HighlighterIterator iterator = ((EditorEx) editor).getHighlighter().createIterator(offset);
if (iterator.atEnd()) {
return false;
}
if (iterator.getStart() > 0) {
iterator.retreat();
}
return JavaTypedHandler.isClassLikeIdentifier(offset, editor, iterator, KtTokens.IDENTIFIER);
}
static boolean isAfterToken(int offset, Editor editor, KtToken tokenType) {
HighlighterIterator iterator = ((EditorEx) editor).getHighlighter().createIterator(offset);
if (iterator.atEnd()) {
return false;
}
if (iterator.getStart() > 0) {
iterator.retreat();
}
if (iterator.getTokenType() == KtTokens.WHITE_SPACE && iterator.getStart() > 0) {
iterator.retreat();
}
return iterator.getTokenType() == tokenType;
}
}