| /* |
| * 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.ide.highlighter.custom.tokens; |
| |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.CustomHighlighterTokenType; |
| |
| /** |
| * @author dsl |
| */ |
| public final class NumberParser extends TokenParser { |
| private final String mySuffices; |
| private final boolean myIgnoreCase; |
| |
| public NumberParser(String suffices, boolean ignoreCase) { |
| myIgnoreCase = ignoreCase; |
| if (!myIgnoreCase) { |
| mySuffices = suffices; |
| } else { |
| mySuffices = suffices.toLowerCase().concat(StringUtil.toUpperCase(suffices)); |
| } |
| } |
| |
| @Override |
| public boolean hasToken(int position) { |
| final int start = position; |
| final char startChar = myBuffer.charAt(start); |
| if(!isDigit(startChar)) return false; |
| for (position++; position < myEndOffset; position++) { |
| if (!isDigit(myBuffer.charAt(position))) break; |
| } |
| |
| if (position < myEndOffset && myBuffer.charAt(position) == '.') { |
| final int dotPosition = position; |
| position++; |
| |
| if (position < myEndOffset && !isDigit(myBuffer.charAt(position))) { |
| position = dotPosition; |
| } else { |
| // after decimal point |
| for (; position < myEndOffset; position++) { |
| if (!isDigit(myBuffer.charAt(position))) break; |
| } |
| if (position < myEndOffset) { |
| final char finalChar = myBuffer.charAt(position); |
| if (!isNumberTail(finalChar) && !isDelimiter(finalChar)) { |
| position = dotPosition; |
| } |
| } |
| } |
| } |
| while(position < myEndOffset && isNumberTail(myBuffer.charAt(position))) { |
| position++; |
| } |
| |
| myTokenInfo.updateData(start, position, CustomHighlighterTokenType.NUMBER); |
| return true; |
| } |
| |
| static boolean isDigit(char c) { |
| return c >= '0' && c <= '9'; |
| } |
| |
| private boolean isDelimiter(char c) { |
| return !Character.isLetter(c); |
| } |
| |
| private boolean isSuffix(char c) { |
| return mySuffices != null && mySuffices.indexOf(c) >= 0; |
| } |
| |
| private boolean isNumberTail(char c) { |
| return /*Character.isLetter(c) ||*/ isSuffix(c); |
| } |
| } |