| /* |
| * 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.codeInsight.template.emmet; |
| |
| import com.intellij.codeInsight.template.emmet.tokens.*; |
| import com.intellij.openapi.util.text.StringUtil; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * User: zolotov |
| * Date: 1/25/13 |
| */ |
| public class EmmetLexer { |
| private static final String DELIMS = ">^+*|()[]{}.#,='\" \0"; |
| |
| @Nullable |
| public List<ZenCodingToken> lex(@NotNull String text) { |
| text += ZenCodingTemplate.MARKER; |
| final List<ZenCodingToken> result = new ArrayList<ZenCodingToken>(); |
| |
| boolean inQuotes = false; |
| boolean inApostrophes = false; |
| int bracesStack = 0; |
| |
| StringBuilder builder = new StringBuilder(); |
| for (int i = 0; i < text.length(); i++) { |
| final char c = text.charAt(i); |
| |
| if (inQuotes) { |
| builder.append(c); |
| if (c == '"') { |
| inQuotes = false; |
| result.add(new StringLiteralToken(builder.toString())); |
| builder = new StringBuilder(); |
| } |
| continue; |
| } |
| |
| if (inApostrophes) { |
| builder.append(c); |
| if (c == '\'') { |
| inApostrophes = false; |
| result.add(new StringLiteralToken(builder.toString())); |
| builder = new StringBuilder(); |
| } |
| continue; |
| } |
| |
| if (bracesStack > 0) { |
| builder.append(c); |
| if (c == '}') { |
| bracesStack--; |
| if (bracesStack == 0) { |
| result.add(new TextToken(builder.toString())); |
| builder = new StringBuilder(); |
| } |
| } |
| else if (c == '{') { |
| bracesStack++; |
| } |
| continue; |
| } |
| |
| if (DELIMS.indexOf(c) < 0) { |
| builder.append(c); |
| } |
| else { |
| // handle special case: ul+ template |
| if (c == '+' && (i == text.length() - 2 || text.charAt(i + 1) == ')')) { |
| builder.append(c); |
| continue; |
| } |
| |
| if (builder.length() > 0) { |
| final String tokenText = builder.toString(); |
| final int n = StringUtil.parseInt(tokenText, -1); |
| if (!StringUtil.startsWithChar(tokenText, '0') && n >= 0) { |
| result.add(new NumberToken(n)); |
| } |
| else { |
| result.add(new IdentifierToken(tokenText)); |
| } |
| builder = new StringBuilder(); |
| } |
| if (c == '"') { |
| inQuotes = true; |
| builder.append(c); |
| } |
| else if (c == '\'') { |
| inApostrophes = true; |
| builder.append(c); |
| } |
| else if (c == '{') { |
| bracesStack = 1; |
| builder.append(c); |
| } |
| else if (c == '(') { |
| result.add(ZenCodingTokens.OPENING_R_BRACKET); |
| } |
| else if (c == ')') { |
| result.add(ZenCodingTokens.CLOSING_R_BRACKET); |
| } |
| else if (c == '[') { |
| result.add(ZenCodingTokens.OPENING_SQ_BRACKET); |
| } |
| else if (c == ']') { |
| result.add(ZenCodingTokens.CLOSING_SQ_BRACKET); |
| } |
| else if (c == '=') { |
| result.add(ZenCodingTokens.EQ); |
| } |
| else if (c == '.') { |
| result.add(ZenCodingTokens.DOT); |
| } |
| else if (c == '#') { |
| result.add(ZenCodingTokens.SHARP); |
| } |
| else if (c == ',') { |
| result.add(ZenCodingTokens.COMMA); |
| } |
| else if (c == ' ') { |
| result.add(ZenCodingTokens.SPACE); |
| } |
| else if (c == '|') { |
| result.add(ZenCodingTokens.PIPE); |
| } |
| else if (c != ZenCodingTemplate.MARKER) { |
| result.add(new OperationToken(c)); |
| } |
| } |
| } |
| if (bracesStack != 0 || inQuotes || inApostrophes) { |
| return null; |
| } |
| return result; |
| } |
| } |