// Copyright (C) 2009 Onno Hommes.
//
// 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 prettify.lang;

import prettify.parser.Prettify;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Pattern;

/**
 * This is similar to the lang-appollo.js in JavaScript Prettify.
 * <p/>
 * All comments are adapted from the JavaScript Prettify.
 * <p/>
 * <p/>
 * Registers a language handler for the AGC/AEA Assembly Language as described
 * at http://virtualagc.googlecode.com
 * <p/>
 * This file could be used by goodle code to allow syntax highlight for
 * Virtual AGC SVN repository or if you don't want to commonize
 * the header for the agc/aea html assembly listing.
 *
 * @author ohommes@alumni.cmu.edu
 */
public class LangPascal extends Lang {

    public LangPascal() {
        List<List<Object>> _shortcutStylePatterns = new ArrayList<List<Object>>();
        List<List<Object>> _fallthroughStylePatterns = new ArrayList<List<Object>>();

        // 'single-line-string'
        _shortcutStylePatterns.add(Arrays.asList(new Object[]{Prettify.PR_STRING, Pattern.compile("^(?:\\'(?:[^\\\\\\'\\r\\n]|\\\\.)*(?:\\'|$))"), null, "'"}));
        // Whitespace
        _shortcutStylePatterns.add(Arrays.asList(new Object[]{Prettify.PR_PLAIN, Pattern.compile("^\\s+"), null, " \r\n\t" + Character.toString((char) 0xA0)}));

        // A cStyleComments comment (* *) or {}
        _fallthroughStylePatterns.add(Arrays.asList(new Object[]{Prettify.PR_COMMENT, Pattern.compile("^\\(\\*[\\s\\S]*?(?:\\*\\)|$)|^\\{[\\s\\S]*?(?:\\}|$)"), null}));
        _fallthroughStylePatterns.add(Arrays.asList(new Object[]{Prettify.PR_KEYWORD, Pattern.compile("^(?:ABSOLUTE|AND|ARRAY|ASM|ASSEMBLER|BEGIN|CASE|CONST|CONSTRUCTOR|DESTRUCTOR|DIV|DO|DOWNTO|ELSE|END|EXTERNAL|FOR|FORWARD|FUNCTION|GOTO|IF|IMPLEMENTATION|IN|INLINE|INTERFACE|INTERRUPT|LABEL|MOD|NOT|OBJECT|OF|OR|PACKED|PROCEDURE|PROGRAM|RECORD|REPEAT|SET|SHL|SHR|THEN|TO|TYPE|UNIT|UNTIL|USES|VAR|VIRTUAL|WHILE|WITH|XOR)\\b", Pattern.CASE_INSENSITIVE), null}));
        _fallthroughStylePatterns.add(Arrays.asList(new Object[]{Prettify.PR_LITERAL, Pattern.compile("^(?:true|false|self|nil)", Pattern.CASE_INSENSITIVE), null}));
        _fallthroughStylePatterns.add(Arrays.asList(new Object[]{Prettify.PR_PLAIN, Pattern.compile("^[a-z][a-z0-9]*", Pattern.CASE_INSENSITIVE), null}));
        // Literals .0, 0, 0.0 0E13
        _fallthroughStylePatterns.add(Arrays.asList(new Object[]{Prettify.PR_LITERAL, Pattern.compile("^(?:\\$[a-f0-9]+|(?:\\d+(?:\\.\\d*)?|\\.\\d+)(?:e[+\\-]?\\d+)?)", Pattern.CASE_INSENSITIVE), null, "0123456789"}));
        _fallthroughStylePatterns.add(Arrays.asList(new Object[]{Prettify.PR_PUNCTUATION, Pattern.compile("^.[^\\s\\w\\.$@\\'\\/]*"), null}));

        setShortcutStylePatterns(_shortcutStylePatterns);
        setFallthroughStylePatterns(_fallthroughStylePatterns);
    }

    public static List<String> getFileExtensions() {
        return Arrays.asList(new String[]{"pascal"});
    }
}