Rhino JavaScript Java Library Source Code
Rhino JavaScript Java Library is an open-source implementation of JavaScript
written entirely in Java.
Rhino JavaScript Java Library Source Code files are provided in binary package (rhino-1.7.14.zip).
You can also browse the source code below:
✍: FYIcenter.com
⏎ org/mozilla/javascript/Icode.java
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.javascript;
/** Additional interpreter-specific codes */
abstract class Icode {
static final int
// delete operator used on a name
Icode_DELNAME = 0,
// Stack: ... value1 -> ... value1 value1
Icode_DUP = -1,
// Stack: ... value2 value1 -> ... value2 value1 value2 value1
Icode_DUP2 = -2,
// Stack: ... value2 value1 -> ... value1 value2
Icode_SWAP = -3,
// Stack: ... value1 -> ...
Icode_POP = -4,
// Store stack top into return register and then pop it
Icode_POP_RESULT = -5,
// To jump conditionally and pop additional stack value
Icode_IFEQ_POP = -6,
// various types of ++/--
Icode_VAR_INC_DEC = -7,
Icode_NAME_INC_DEC = -8,
Icode_PROP_INC_DEC = -9,
Icode_ELEM_INC_DEC = -10,
Icode_REF_INC_DEC = -11,
// load/save scope from/to local
Icode_SCOPE_LOAD = -12,
Icode_SCOPE_SAVE = -13,
Icode_TYPEOFNAME = -14,
// helper for function calls
Icode_NAME_AND_THIS = -15,
Icode_PROP_AND_THIS = -16,
Icode_ELEM_AND_THIS = -17,
Icode_VALUE_AND_THIS = -18,
// Create closure object for nested functions
Icode_CLOSURE_EXPR = -19,
Icode_CLOSURE_STMT = -20,
// Special calls
Icode_CALLSPECIAL = -21,
// To return undefined value
Icode_RETUNDEF = -22,
// Exception handling implementation
Icode_GOSUB = -23,
Icode_STARTSUB = -24,
Icode_RETSUB = -25,
// To indicating a line number change in icodes.
Icode_LINE = -26,
// To store shorts and ints inline
Icode_SHORTNUMBER = -27,
Icode_INTNUMBER = -28,
// To create and populate array to hold values for [] and {} literals
Icode_LITERAL_NEW = -29,
Icode_LITERAL_SET = -30,
// Array literal with skipped index like [1,,2]
Icode_SPARE_ARRAYLIT = -31,
// Load index register to prepare for the following index operation
Icode_REG_IND_C0 = -32,
Icode_REG_IND_C1 = -33,
Icode_REG_IND_C2 = -34,
Icode_REG_IND_C3 = -35,
Icode_REG_IND_C4 = -36,
Icode_REG_IND_C5 = -37,
Icode_REG_IND1 = -38,
Icode_REG_IND2 = -39,
Icode_REG_IND4 = -40,
// Load string register to prepare for the following string operation
Icode_REG_STR_C0 = -41,
Icode_REG_STR_C1 = -42,
Icode_REG_STR_C2 = -43,
Icode_REG_STR_C3 = -44,
Icode_REG_STR1 = -45,
Icode_REG_STR2 = -46,
Icode_REG_STR4 = -47,
// Version of getvar/setvar that read var index directly from bytecode
Icode_GETVAR1 = -48,
Icode_SETVAR1 = -49,
// Load undefined
Icode_UNDEF = -50,
Icode_ZERO = -51,
Icode_ONE = -52,
// entrance and exit from .()
Icode_ENTERDQ = -53,
Icode_LEAVEDQ = -54,
Icode_TAIL_CALL = -55,
// Clear local to allow GC its context
Icode_LOCAL_CLEAR = -56,
// Literal get/set
Icode_LITERAL_GETTER = -57,
Icode_LITERAL_SETTER = -58,
// const
Icode_SETCONST = -59,
Icode_SETCONSTVAR = -60,
Icode_SETCONSTVAR1 = -61,
// Generator opcodes (along with Token.YIELD)
Icode_GENERATOR = -62,
Icode_GENERATOR_END = -63,
Icode_DEBUGGER = -64,
Icode_GENERATOR_RETURN = -65,
Icode_YIELD_STAR = -66,
// Load BigInt register to prepare for the following BigInt operation
Icode_REG_BIGINT_C0 = -67,
Icode_REG_BIGINT_C1 = -68,
Icode_REG_BIGINT_C2 = -69,
Icode_REG_BIGINT_C3 = -70,
Icode_REG_BIGINT1 = -71,
Icode_REG_BIGINT2 = -72,
Icode_REG_BIGINT4 = -73,
// Call to GetTemplateLiteralCallSite
Icode_TEMPLATE_LITERAL_CALLSITE = -74,
// Last icode
MIN_ICODE = -74;
static String bytecodeName(int bytecode) {
if (!validBytecode(bytecode)) {
throw new IllegalArgumentException(String.valueOf(bytecode));
}
if (!Token.printICode) {
return String.valueOf(bytecode);
}
if (validTokenCode(bytecode)) {
return Token.name(bytecode);
}
switch (bytecode) {
case Icode_DUP:
return "DUP";
case Icode_DUP2:
return "DUP2";
case Icode_SWAP:
return "SWAP";
case Icode_POP:
return "POP";
case Icode_POP_RESULT:
return "POP_RESULT";
case Icode_IFEQ_POP:
return "IFEQ_POP";
case Icode_VAR_INC_DEC:
return "VAR_INC_DEC";
case Icode_NAME_INC_DEC:
return "NAME_INC_DEC";
case Icode_PROP_INC_DEC:
return "PROP_INC_DEC";
case Icode_ELEM_INC_DEC:
return "ELEM_INC_DEC";
case Icode_REF_INC_DEC:
return "REF_INC_DEC";
case Icode_SCOPE_LOAD:
return "SCOPE_LOAD";
case Icode_SCOPE_SAVE:
return "SCOPE_SAVE";
case Icode_TYPEOFNAME:
return "TYPEOFNAME";
case Icode_NAME_AND_THIS:
return "NAME_AND_THIS";
case Icode_PROP_AND_THIS:
return "PROP_AND_THIS";
case Icode_ELEM_AND_THIS:
return "ELEM_AND_THIS";
case Icode_VALUE_AND_THIS:
return "VALUE_AND_THIS";
case Icode_CLOSURE_EXPR:
return "CLOSURE_EXPR";
case Icode_CLOSURE_STMT:
return "CLOSURE_STMT";
case Icode_CALLSPECIAL:
return "CALLSPECIAL";
case Icode_RETUNDEF:
return "RETUNDEF";
case Icode_GOSUB:
return "GOSUB";
case Icode_STARTSUB:
return "STARTSUB";
case Icode_RETSUB:
return "RETSUB";
case Icode_LINE:
return "LINE";
case Icode_SHORTNUMBER:
return "SHORTNUMBER";
case Icode_INTNUMBER:
return "INTNUMBER";
case Icode_LITERAL_NEW:
return "LITERAL_NEW";
case Icode_LITERAL_SET:
return "LITERAL_SET";
case Icode_SPARE_ARRAYLIT:
return "SPARE_ARRAYLIT";
case Icode_REG_IND_C0:
return "REG_IND_C0";
case Icode_REG_IND_C1:
return "REG_IND_C1";
case Icode_REG_IND_C2:
return "REG_IND_C2";
case Icode_REG_IND_C3:
return "REG_IND_C3";
case Icode_REG_IND_C4:
return "REG_IND_C4";
case Icode_REG_IND_C5:
return "REG_IND_C5";
case Icode_REG_IND1:
return "LOAD_IND1";
case Icode_REG_IND2:
return "LOAD_IND2";
case Icode_REG_IND4:
return "LOAD_IND4";
case Icode_REG_STR_C0:
return "REG_STR_C0";
case Icode_REG_STR_C1:
return "REG_STR_C1";
case Icode_REG_STR_C2:
return "REG_STR_C2";
case Icode_REG_STR_C3:
return "REG_STR_C3";
case Icode_REG_STR1:
return "LOAD_STR1";
case Icode_REG_STR2:
return "LOAD_STR2";
case Icode_REG_STR4:
return "LOAD_STR4";
case Icode_GETVAR1:
return "GETVAR1";
case Icode_SETVAR1:
return "SETVAR1";
case Icode_UNDEF:
return "UNDEF";
case Icode_ZERO:
return "ZERO";
case Icode_ONE:
return "ONE";
case Icode_ENTERDQ:
return "ENTERDQ";
case Icode_LEAVEDQ:
return "LEAVEDQ";
case Icode_TAIL_CALL:
return "TAIL_CALL";
case Icode_LOCAL_CLEAR:
return "LOCAL_CLEAR";
case Icode_LITERAL_GETTER:
return "LITERAL_GETTER";
case Icode_LITERAL_SETTER:
return "LITERAL_SETTER";
case Icode_SETCONST:
return "SETCONST";
case Icode_SETCONSTVAR:
return "SETCONSTVAR";
case Icode_SETCONSTVAR1:
return "SETCONSTVAR1";
case Icode_GENERATOR:
return "GENERATOR";
case Icode_GENERATOR_END:
return "GENERATOR_END";
case Icode_DEBUGGER:
return "DEBUGGER";
case Icode_GENERATOR_RETURN:
return "GENERATOR_RETURN";
case Icode_YIELD_STAR:
return "YIELD_STAR";
case Icode_REG_BIGINT_C0:
return "REG_BIGINT_C0";
case Icode_REG_BIGINT_C1:
return "REG_BIGINT_C1";
case Icode_REG_BIGINT_C2:
return "REG_BIGINT_C2";
case Icode_REG_BIGINT_C3:
return "REG_BIGINT_C3";
case Icode_REG_BIGINT1:
return "LOAD_BIGINT1";
case Icode_REG_BIGINT2:
return "LOAD_BIGINT2";
case Icode_REG_BIGINT4:
return "LOAD_BIGINT4";
case Icode_TEMPLATE_LITERAL_CALLSITE:
return "TEMPLATE_LITERAL_CALLSITE";
}
// icode without name
throw new IllegalStateException(String.valueOf(bytecode));
}
static boolean validIcode(int icode) {
return MIN_ICODE <= icode && icode <= 0;
}
static boolean validTokenCode(int token) {
return Token.FIRST_BYTECODE_TOKEN <= token && token <= Token.LAST_BYTECODE_TOKEN;
}
static boolean validBytecode(int bytecode) {
return validIcode(bytecode) || validTokenCode(bytecode);
}
}
⏎ org/mozilla/javascript/Icode.java
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