| /* |
| * MethodIndex.java |
| * |
| * Created on January 1, 2007, 7:39 PM |
| * |
| * To change this template, choose Tools | Template Manager |
| * and open the template in the editor. |
| */ |
| |
| package org.jruby.runtime; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * |
| * @author headius |
| */ |
| public class MethodIndex { |
| public static final int NO_INDEX = 0; |
| public static final int OP_PLUS = 1; |
| public static final int OP_MINUS = 2; |
| public static final int OP_LT = 3; |
| public static final int AREF = 4; |
| public static final int ASET = 5; |
| public static final int POP = 6; |
| public static final int PUSH = 7; |
| public static final int NIL_P = 8; |
| public static final int EQUALEQUAL = 9; |
| public static final int UNSHIFT = 10; |
| public static final int OP_GE = 11; |
| public static final int OP_LSHIFT = 12; |
| public static final int EMPTY_P = 13; |
| public static final int TO_S = 14; |
| public static final int TO_I = 15; |
| public static final int AT = 16; |
| public static final int TO_STR = 17; |
| public static final int TO_ARY = 18; |
| public static final int TO_INT = 19; |
| public static final int TO_F = 20; |
| public static final int TO_SYM = 21; |
| public static final int TO_A = 22; |
| public static final int HASH = 23; |
| public static final int OP_GT = 24; |
| public static final int OP_TIMES = 25; |
| public static final int OP_LE = 26; |
| public static final int OP_SPACESHIP = 27; |
| public static final int LENGTH = 28; |
| public static final int OP_MATCH = 29; |
| public static final int OP_EQQ = 30; |
| public static final int LAST = 31; |
| public static final int SHIFT = 32; |
| public static final int EQL_P = 33; |
| public static final int TO_HASH = 34; |
| public static final int MAX_METHODS = 35; |
| |
| public static final String[] NAMES = new String[MAX_METHODS]; |
| public static final Map NUMBERS = new HashMap(); |
| |
| static { |
| NAMES[NO_INDEX] = ""; |
| NAMES[OP_PLUS] = "+"; |
| NAMES[OP_MINUS] = "-"; |
| NAMES[OP_LT] = "<"; |
| NAMES[AREF] = "[]"; |
| NAMES[ASET] = "[]="; |
| NAMES[POP] = "pop"; |
| NAMES[PUSH] = "push"; |
| NAMES[NIL_P] = "nil?"; |
| NAMES[EQUALEQUAL] = "=="; |
| NAMES[UNSHIFT] = "unshift"; |
| NAMES[OP_GE] = ">="; |
| NAMES[OP_LSHIFT] = "<<"; |
| NAMES[EMPTY_P] = "empty?"; |
| NAMES[TO_S] = "to_s"; |
| NAMES[TO_I] = "to_i"; |
| NAMES[AT] = "at"; |
| NAMES[TO_STR] = "to_str"; |
| NAMES[TO_ARY] = "to_ary"; |
| NAMES[TO_INT] = "to_int"; |
| NAMES[TO_F] = "to_f"; |
| NAMES[TO_SYM] = "to_sym"; |
| NAMES[TO_A] = "to_a"; |
| NAMES[HASH] = "hash"; |
| NAMES[OP_GT] = ">"; |
| NAMES[OP_TIMES] = "*"; |
| NAMES[OP_LE] = "<="; |
| NAMES[OP_SPACESHIP] = "<=>"; |
| NAMES[LENGTH] = "length"; |
| NAMES[OP_MATCH] = "=~"; |
| NAMES[OP_EQQ] = "==="; |
| NAMES[LAST] = "last"; |
| NAMES[SHIFT] = "shift"; |
| NAMES[EQL_P] = "eql?"; |
| NAMES[TO_HASH] = "to_hash"; |
| |
| for (int i = 0; i < MAX_METHODS; i++) { |
| NUMBERS.put(NAMES[i], new Integer(i)); |
| } |
| } |
| |
| /** Creates a new instance of MethodIndex */ |
| public MethodIndex() { |
| } |
| |
| public static int getIndex(String methodName) { |
| // fast lookup for the length 1 messages |
| switch (methodName.length()) { |
| case 1: |
| switch (methodName.charAt(0)) { |
| case '+': return OP_PLUS; |
| case '-': return OP_MINUS; |
| case '<': return OP_LT; |
| case '>': return OP_GT; |
| case '*': return OP_TIMES; |
| default: return NO_INDEX; |
| } |
| default: |
| if (NUMBERS.containsKey(methodName)) return ((Integer)NUMBERS.get(methodName)).intValue(); |
| return NO_INDEX; |
| } |
| } |
| } |
