/*
* Copyright 2011-2014 Gregory Shrago
*
* 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.jflex.editor;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.editor.DefaultLanguageHighlighterColors;
import com.intellij.openapi.editor.HighlighterColors;
import com.intellij.openapi.editor.colors.TextAttributesKey;
import com.intellij.openapi.fileTypes.SyntaxHighlighter;
import com.intellij.openapi.fileTypes.SyntaxHighlighterBase;
import com.intellij.openapi.fileTypes.SyntaxHighlighterFactory;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IElementType;
import org.intellij.jflex.parser.JFlexLexer;
import org.jetbrains.annotations.NotNull;
import static com.intellij.openapi.editor.colors.TextAttributesKey.createTextAttributesKey;
import static org.intellij.jflex.psi.JFlexTypes.*;
public class JFlexSyntaxHighlighterFactory extends SyntaxHighlighterFactory {
public static final TextAttributesKey ILLEGAL = createTextAttributesKey("FLEX_ILLEGAL", HighlighterColors.BAD_CHARACTER);
public static final TextAttributesKey COMMENT = createTextAttributesKey("FLEX_COMMENT", DefaultLanguageHighlighterColors.LINE_COMMENT);
public static final TextAttributesKey KEYWORD = createTextAttributesKey("FLEX_KEYWORD", DefaultLanguageHighlighterColors.KEYWORD);
public static final TextAttributesKey STD_CLASS = createTextAttributesKey("FLEX_STD_CLASS", DefaultLanguageHighlighterColors.STATIC_FIELD);
public static final TextAttributesKey CLASS = createTextAttributesKey("FLEX_CLASS", DefaultLanguageHighlighterColors.INSTANCE_FIELD);
public static final TextAttributesKey MACRO = createTextAttributesKey("FLEX_MACRO", DefaultLanguageHighlighterColors.INSTANCE_FIELD);
public static final TextAttributesKey STATE = createTextAttributesKey("FLEX_STATE", DefaultLanguageHighlighterColors.CLASS_NAME);
public static final TextAttributesKey STRING = createTextAttributesKey("FLEX_STRING", DefaultLanguageHighlighterColors.STRING);
public static final TextAttributesKey ESCAPED_CHAR = createTextAttributesKey("FLEX_ESCAPED_CHAR", DefaultLanguageHighlighterColors.VALID_STRING_ESCAPE);
public static final TextAttributesKey CHAR = createTextAttributesKey("FLEX_CHAR", DefaultLanguageHighlighterColors.IDENTIFIER);
public static final TextAttributesKey NUMBER = createTextAttributesKey("FLEX_NUMBER", DefaultLanguageHighlighterColors.NUMBER);
public static final TextAttributesKey CODE = createTextAttributesKey("FLEX_CODE", HighlighterColors.TEXT);
public static final TextAttributesKey PARENTHS = createTextAttributesKey("FLEX_PARENTHS", DefaultLanguageHighlighterColors.PARENTHESES);
public static final TextAttributesKey BRACES = createTextAttributesKey("FLEX_BRACES", DefaultLanguageHighlighterColors.BRACES);
public static final TextAttributesKey BRACKETS = createTextAttributesKey("FLEX_BRACKETS", DefaultLanguageHighlighterColors.BRACKETS);
public static final TextAttributesKey ANGLES = createTextAttributesKey("FLEX_ANGLES", DefaultLanguageHighlighterColors.BRACKETS);
public static final TextAttributesKey OP_EQUAL = createTextAttributesKey("FLEX_OP_EQUAL", DefaultLanguageHighlighterColors.OPERATION_SIGN);
public static final TextAttributesKey OP_SIGN = createTextAttributesKey("FLEX_OP_SIGN", DefaultLanguageHighlighterColors.OPERATION_SIGN);
@NotNull
@Override
public SyntaxHighlighter getSyntaxHighlighter(Project project, VirtualFile virtualFile) {
return new JFlexSyntaxHighlighter();
}
private class JFlexSyntaxHighlighter extends SyntaxHighlighterBase {
@NotNull
@Override
public Lexer getHighlightingLexer() {
return new JFlexLexer();
}
@NotNull
@Override
public TextAttributesKey[] getTokenHighlights(IElementType tokenType) {
if (tokenType == FLEX_LINE_COMMENT || tokenType == FLEX_BLOCK_COMMENT) {
return pack(COMMENT);
}
else if (tokenType == FLEX_NUMBER) {
return pack(NUMBER);
}
else if (tokenType == FLEX_STRING) {
return pack(STRING);
}
else if (tokenType == FLEX_ESCAPED_CHAR) {
return pack(ESCAPED_CHAR);
}
else if (tokenType == FLEX_CHAR) {
return pack(CHAR);
}
else if (tokenType == FLEX_PAREN1 || tokenType == FLEX_PAREN2) {
return pack(PARENTHS);
}
else if (tokenType == FLEX_BRACE1 || tokenType == FLEX_BRACE2) {
return pack(BRACES);
}
else if (tokenType == FLEX_BRACK1 || tokenType == FLEX_BRACK2) {
return pack(BRACKETS);
}
else if (tokenType == FLEX_ANGLE1 || tokenType == FLEX_ANGLE2) {
return pack(ANGLES);
}
else if (tokenType == FLEX_EQ) {
return pack(OP_EQUAL);
}
else if (tokenType.toString().startsWith("%")) {
return pack(KEYWORD);
}
else if (tokenType.toString().length() == 1) {
return pack(OP_SIGN);
}
else if (tokenType.toString().startsWith("[:")) {
return pack(STD_CLASS);
}
else if (tokenType == TokenType.BAD_CHARACTER) {
return pack(ILLEGAL);
}
return EMPTY;
}
}
}