| /* |
| * 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.intellij.openapi.fileTypes; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.editor.colors.TextAttributesKey; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.tree.TokenSet; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.Map; |
| |
| public abstract class SyntaxHighlighterBase implements SyntaxHighlighter { |
| private static final Logger LOG = Logger.getInstance(SyntaxHighlighterBase.class); |
| |
| protected static final TextAttributesKey[] EMPTY = new TextAttributesKey[0]; |
| |
| @NotNull |
| public static TextAttributesKey[] pack(@Nullable TextAttributesKey key) { |
| return key == null ? EMPTY : new TextAttributesKey[]{key}; |
| } |
| |
| @NotNull |
| public static TextAttributesKey[] pack(@Nullable TextAttributesKey key1, @Nullable TextAttributesKey key2) { |
| if (key1 == null) return pack(key2); |
| if (key2 == null) return pack(key1); |
| return new TextAttributesKey[]{key1, key2}; |
| } |
| |
| @NotNull |
| public static TextAttributesKey[] pack(@NotNull TextAttributesKey[] base, @Nullable TextAttributesKey key) { |
| if (key == null) return base; |
| TextAttributesKey[] result = new TextAttributesKey[base.length + 1]; |
| System.arraycopy(base, 0, result, 0, base.length); |
| result[base.length] = key; |
| return result; |
| } |
| |
| @NotNull |
| public static TextAttributesKey[] pack(@Nullable TextAttributesKey key, @NotNull TextAttributesKey[] base) { |
| if (key == null) return base; |
| TextAttributesKey[] result = new TextAttributesKey[base.length + 1]; |
| System.arraycopy(base, 0, result, 1, base.length); |
| result[0] = key; |
| return result; |
| } |
| |
| @NotNull |
| public static TextAttributesKey[] pack(@NotNull TextAttributesKey[] base, @Nullable TextAttributesKey t1, @Nullable TextAttributesKey t2) { |
| int add = 0; |
| if (t1 != null) add++; |
| if (t2 != null) add++; |
| if (add == 0) return base; |
| TextAttributesKey[] result = new TextAttributesKey[base.length + add]; |
| add = base.length; |
| System.arraycopy(base, 0, result, 0, base.length); |
| if (t1 != null) result[add++] = t1; |
| if (t2 != null) result[add] = t2; |
| return result; |
| } |
| |
| protected static void fillMap(@NotNull Map<IElementType, TextAttributesKey> map, @NotNull TokenSet keys, TextAttributesKey value) { |
| fillMap(map, value, keys.getTypes()); |
| } |
| |
| protected static void fillMap(@NotNull Map<IElementType, TextAttributesKey> map, TextAttributesKey value, @NotNull IElementType... types) { |
| for (IElementType type : types) { |
| map.put(type, value); |
| } |
| } |
| |
| /** |
| * Tries to update the map by associating given keys with a given value. |
| * Throws error if the map already contains different mapping for one of given keys. |
| */ |
| protected static void safeMap(@NotNull final Map<IElementType, TextAttributesKey> map, |
| @NotNull final TokenSet keys, |
| @NotNull final TextAttributesKey value) { |
| for (final IElementType type : keys.getTypes()) { |
| safeMap(map, type, value); |
| } |
| } |
| |
| /** |
| * Tries to update the map by associating given key with a given value. |
| * Throws error if the map already contains different mapping for given key. |
| */ |
| protected static void safeMap(@NotNull final Map<IElementType, TextAttributesKey> map, |
| @NotNull final IElementType type, |
| @NotNull final TextAttributesKey value) { |
| final TextAttributesKey oldVal = map.put(type, value); |
| if (oldVal != null && !oldVal.equals(value)) { |
| LOG.error("Remapping highlighting for \"" + type + "\" val: old=" + oldVal + " new=" + value); |
| } |
| } |
| } |