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Использование HashMap вместо поиска по массиву в цикле

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Victor 2015-04-14 16:53:44 +03:00
parent f8e5121229
commit 5645d37c6c
1 changed files with 39 additions and 37 deletions
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74
src/com/annimon/everlastingsummer/Lexer.java
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@ -1,7 +1,10 @@
package com.annimon.everlastingsummer;
import java.util.LinkedList;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
/**
* @author aNNiMON
@ -23,36 +26,41 @@ public final class Lexer {
TokenType.COMMAND, TokenType.COLON,
};
private static final String[] KEYWORDS = {
"play", "stop",
"music", "ambience", "sound", "sound_loop",
"fadein", "fadeout",
private static final Map<String, TokenType> KEYWORDS;
static {
KEYWORDS = new HashMap<String, TokenType>();
KEYWORDS.put("play", TokenType.PLAY);
KEYWORDS.put("stop", TokenType.STOP);
KEYWORDS.put("music", TokenType.MUSIC);
KEYWORDS.put("ambience", TokenType.AMBIENCE);
KEYWORDS.put("sound", TokenType.SOUND);
KEYWORDS.put("sound_loop", TokenType.SOUNDLOOP);
KEYWORDS.put("fadein", TokenType.FADEIN);
KEYWORDS.put("fadeout", TokenType.FADEOUT);
"scene", "anim", "bg", "cg",
"at",
"window", "hide", "show",
"with",
KEYWORDS.put("scene", TokenType.SCENE);
KEYWORDS.put("anim", TokenType.ANIM);
KEYWORDS.put("bg", TokenType.BG);
KEYWORDS.put("cg", TokenType.CG);
KEYWORDS.put("at", TokenType.AT);
KEYWORDS.put("window", TokenType.WINDOW);
KEYWORDS.put("hide", TokenType.HIDE);
KEYWORDS.put("show", TokenType.SHOW);
KEYWORDS.put("with", TokenType.WITH);
"return", "menu", "endmenu", "jump", "label",
KEYWORDS.put("return", TokenType.RETURN);
KEYWORDS.put("menu", TokenType.MENU);
KEYWORDS.put("endmenu", TokenType.ENDMENU);
KEYWORDS.put("jump", TokenType.JUMP);
KEYWORDS.put("label", TokenType.LABEL);
"renpy.pause", "persistent.sprite_time",
"prolog_time", "day_time", "sunset_time", "night_time"
};
private static final TokenType[] KEYWORD_TYPES = new TokenType[] {
TokenType.PLAY, TokenType.STOP,
TokenType.MUSIC, TokenType.AMBIENCE, TokenType.SOUND, TokenType.SOUNDLOOP,
TokenType.FADEIN, TokenType.FADEOUT,
TokenType.SCENE, TokenType.ANIM, TokenType.BG, TokenType.CG,
TokenType.AT,
TokenType.WINDOW, TokenType.HIDE, TokenType.SHOW,
TokenType.WITH,
TokenType.RETURN, TokenType.MENU, TokenType.ENDMENU, TokenType.JUMP, TokenType.LABEL,
TokenType.RENPY_PAUSE, TokenType.PERSISTENT_SPRITE_TIME,
TokenType.PROLOG_TIME, TokenType.DAY_TIME, TokenType.SUNSET_TIME, TokenType.NIGHT_TIME
};
KEYWORDS.put("renpy.pause", TokenType.RENPY_PAUSE);
KEYWORDS.put("persistent.sprite_time", TokenType.PERSISTENT_SPRITE_TIME);
KEYWORDS.put("prolog_time", TokenType.PROLOG_TIME);
KEYWORDS.put("day_time", TokenType.DAY_TIME);
KEYWORDS.put("sunset_time", TokenType.SUNSET_TIME);
KEYWORDS.put("night_time", TokenType.NIGHT_TIME);
}
private TokenizeState state;
private int pos;
@ -117,14 +125,8 @@ public final class Lexer {
if (Character.isLetterOrDigit(ch) || (ch == '_') || (ch == '.')) {
buffer.append(ch);
} else {
final String word = buffer.toString();
for (int i = 0; i < KEYWORDS.length; i++) {
if (KEYWORDS[i].equalsIgnoreCase(word)) {
addToken(KEYWORD_TYPES[i]);
return;
}
}
addToken(TokenType.WORD);
final String word = buffer.toString().toLowerCase(Locale.ENGLISH);
addToken(KEYWORDS.containsKey(word) ? KEYWORDS.get(word) : TokenType.WORD);
}
}