/*
* 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.editor;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.editor.DefaultLanguageHighlighterColors;
import com.intellij.openapi.editor.colors.CodeInsightColors;
import com.intellij.openapi.editor.colors.TextAttributesKey;
import com.intellij.openapi.fileTypes.SyntaxHighlighterBase;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IElementType;
import org.intellij.erlang.ErlangParserDefinition;
import org.intellij.erlang.parser.ErlangLexer;
import org.jetbrains.annotations.NotNull;
import static com.intellij.openapi.editor.colors.TextAttributesKey.createTextAttributesKey;
import static org.intellij.erlang.ErlangTypes.*;
public class ErlangSyntaxHighlighter extends SyntaxHighlighterBase {
public static final TextAttributesKey ILLEGAL = createTextAttributesKey("ERL_ILLEGAL", DefaultLanguageHighlighterColors.INVALID_STRING_ESCAPE);
public static final TextAttributesKey COMMENT = createTextAttributesKey("ERL_COMMENT", DefaultLanguageHighlighterColors.LINE_COMMENT);
public static final TextAttributesKey STRING = createTextAttributesKey("ERL_STRING", DefaultLanguageHighlighterColors.STRING);
public static final TextAttributesKey NUMBER = createTextAttributesKey("ERL_NUMBER", DefaultLanguageHighlighterColors.NUMBER);
public static final TextAttributesKey KEYWORD = createTextAttributesKey("ERL_KEYWORD", DefaultLanguageHighlighterColors.KEYWORD);
public static final TextAttributesKey PARENTHESES = createTextAttributesKey("ERL_PARENTHESES", DefaultLanguageHighlighterColors.PARENTHESES);
public static final TextAttributesKey BRACES = createTextAttributesKey("ERL_BRACES", DefaultLanguageHighlighterColors.BRACES);
public static final TextAttributesKey BRACKETS = createTextAttributesKey("ERL_BRACKETS", DefaultLanguageHighlighterColors.BRACKETS);
public static final TextAttributesKey ATOM = createTextAttributesKey("ERL_ATOM", DefaultLanguageHighlighterColors.IDENTIFIER);
public static final TextAttributesKey MACRO = createTextAttributesKey("ERL_MACRO", CodeInsightColors.STATIC_FINAL_FIELD_ATTRIBUTES);
public static final TextAttributesKey VARIABLES = createTextAttributesKey("ERL_VARIABLES", DefaultLanguageHighlighterColors.GLOBAL_VARIABLE);
public static final TextAttributesKey RECORDS = createTextAttributesKey("ERL_RECORDS", CodeInsightColors.INSTANCE_FIELD_ATTRIBUTES);
public static final TextAttributesKey OP_SIGN = createTextAttributesKey("ERL_OP_SIGN", DefaultLanguageHighlighterColors.OPERATION_SIGN);
public static final TextAttributesKey DOC_TAG = createTextAttributesKey("ERL_DOC_TAG", DefaultLanguageHighlighterColors.DOC_COMMENT_TAG);
public static final TextAttributesKey FUNCTION = createTextAttributesKey("ERL_FUNCTION", CodeInsightColors.METHOD_DECLARATION_ATTRIBUTES);
public static final TextAttributesKey TYPE = createTextAttributesKey("ERL_TYPE", CodeInsightColors.ANNOTATION_ATTRIBUTE_NAME_ATTRIBUTES);
public static final TextAttributesKey BUILT_IN_TYPE = createTextAttributesKey("ERL_BUILT_IN_TYPE", CodeInsightColors.ANNOTATION_ATTRIBUTE_NAME_ATTRIBUTES);
public static final TextAttributesKey ATTRIBUTE = createTextAttributesKey("ERL_ATTRIBUTE", CodeInsightColors.ANNOTATION_NAME_ATTRIBUTES);
public static final TextAttributesKey FUNCTION_CALL = createTextAttributesKey("ERL_FUNCTION_CALL", CodeInsightColors.METHOD_CALL_ATTRIBUTES);
public static final TextAttributesKey GUARD = createTextAttributesKey("ERL_GUARD", CodeInsightColors.METHOD_CALL_ATTRIBUTES);
public static final TextAttributesKey SPEC = createTextAttributesKey("ERL_SPEC", CodeInsightColors.METHOD_CALL_ATTRIBUTES);
public static final TextAttributesKey CALLBACK = createTextAttributesKey("ERL_CALLBACK", CodeInsightColors.METHOD_CALL_ATTRIBUTES);
public static final TextAttributesKey MODULE_REF = createTextAttributesKey("ERL_MODULE_REF", DefaultLanguageHighlighterColors.CLASS_NAME);
@NotNull
@Override
public Lexer getHighlightingLexer() {
return new ErlangLexer();
}
@NotNull
@Override
public TextAttributesKey[] getTokenHighlights(IElementType type) {
if (type == TokenType.BAD_CHARACTER) {
return pack(ILLEGAL);
}
if (ErlangParserDefinition.COMMENTS.contains(type)) {
return pack(COMMENT);
}
if (type == ERL_STRING || type == ERL_CHAR) {
return pack(STRING);
}
if (type == ERL_INTEGER || type == ERL_FLOAT) {
return pack(NUMBER);
}
if (type == ERL_OP_EQ) {
return pack(OP_SIGN);
}
if (type == ERL_PAR_LEFT || type == ERL_PAR_RIGHT) {
return pack(PARENTHESES);
}
if (type == ERL_CURLY_LEFT || type == ERL_CURLY_RIGHT) {
return pack(BRACES);
}
if (type == ERL_BRACKET_LEFT || type == ERL_BRACKET_RIGHT) {
return pack(BRACKETS);
}
if (type == ERL_VAR) {
return pack(VARIABLES);
}
if (type == ERL_FUNCTION) {
return pack(FUNCTION);
}
if (
ERL_AFTER == type ||
ERL_WHEN == type ||
ERL_BEGIN == type ||
ERL_END == type ||
ERL_OF == type ||
ERL_CASE == type ||
ERL_FUN == type ||
ERL_CATCH == type ||
ERL_IF == type ||
ERL_RECEIVE == type ||
ERL_TRY == type ||
ERL_DOT == type ||
ERL_ANDALSO == type ||
ERL_ORELSE == type ||
ERL_DIV == type ||
ERL_REM == type ||
ERL_XOR == type ||
ERL_BXOR == type ||
ERL_BOR == type ||
ERL_BAND == type ||
ERL_BNOT == type ||
ERL_AND == type ||
ERL_OR == type ||
ERL_NOT == type ||
ERL_BSL == type ||
ERL_BSR == type ||
ERL_OR_OR == type
) {
return pack(KEYWORD);
}
return EMPTY;
}
}