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processor.js
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processor.js
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this.Processor = class Processor {
constructor(runner) {
this.runner = runner;
this.locals = [];
this.stack = [];
this.call_stack = [];
this.log = false;
this.time_limit = 2e308;
this.done = true;
}
load(routine1) {
this.routine = routine1;
return this.resetState();
}
resetState() {
this.local_index = 0;
this.stack_index = -1;
this.op_index = 0;
this.call_stack_index = 0;
this.global = null;
this.object = this.routine.object || null;
this.locals_offset = 0;
this.call_super = null;
this.call_supername = "";
return this.done = false;
}
resolveParentClass(obj, global) {
if ((obj.class != null) && typeof obj.class === "string") {
if (global[obj.class] != null) {
obj.class = global[obj.class];
return this.resolveParentClass(obj.class, global);
}
} else if (obj.class != null) {
return this.resolveParentClass(obj.class, global);
}
}
applyFunction(args) {}
routineAsFunction(routine, context) {
var f, proc;
proc = new Processor(this.runner);
f = function() {
var a, count, i, j, k, ref, ref1;
count = Math.min(routine.num_args, arguments.length);
proc.load(routine);
for (i = j = 0, ref = count - 1; j <= ref; i = j += 1) {
proc.stack[++proc.stack_index] = arguments[i] || 0;
}
proc.stack[++proc.stack_index] = arguments.length;
if (routine.uses_arguments) {
a = [...arguments];
for (i = k = 0, ref1 = a.length - 1; k <= ref1; i = k += 1) {
if (a[i] == null) {
a[i] = 0;
}
}
proc.stack[++proc.stack_index] = a;
}
return proc.run(context);
};
//res = proc.stack[0]
return f;
}
routineAsApplicableFunction(routine, context) {
var f, proc;
proc = new Processor(this.runner);
f = function() {
var a, count, i, j, k, ref, ref1, res;
count = routine.num_args;
proc.load(routine);
proc.object = this;
for (i = j = 0, ref = count - 1; j <= ref; i = j += 1) {
proc.stack[++proc.stack_index] = arguments[i] || 0;
}
proc.stack[++proc.stack_index] = arguments.length;
if (routine.uses_arguments) {
a = [...arguments];
for (i = k = 0, ref1 = a.length - 1; k <= ref1; i = k += 1) {
if (a[i] == null) {
a[i] = 0;
}
}
proc.stack[++proc.stack_index] = a;
}
proc.run(context);
return res = proc.stack[0];
};
return f;
}
argToNative(arg, context) {
if (arg instanceof Routine) {
return this.routineAsFunction(arg, context);
} else {
if (arg != null) {
return arg;
} else {
return 0;
}
}
}
modulo(context, a, b) {
var f, obj;
if (Array.isArray(a)) {
obj = context.global.List;
} else if (typeof a === "string") {
if (isFinite(a)) {
a %= b;
if (isFinite(a)) {
return a;
} else {
return 0;
}
} else {
obj = context.global.String;
}
} else {
obj = a;
}
f = obj["%"];
while ((f == null) && (obj.class != null)) {
obj = obj.class;
f = obj["%"];
}
if (f == null) {
f = context.global.Object["%"];
}
if ((f != null) && f instanceof Routine) {
if (f.as_function == null) {
f.as_function = this.routineAsApplicableFunction(f, context);
}
f = f.as_function;
return f.call(context.global, a, b);
} else {
return 0;
}
}
add(context, a, b, self) {
var f, obj;
if (Array.isArray(a)) {
obj = context.global.List;
} else if (typeof a === "string") {
obj = context.global.String;
} else {
obj = a;
}
f = obj["+"];
while ((f == null) && (obj.class != null)) {
obj = obj.class;
f = obj["+"];
}
if (f == null) {
f = context.global.Object["+"];
}
if (f != null) {
if (f instanceof Routine) {
if (f.as_function == null) {
f.as_function = this.routineAsApplicableFunction(f, context);
}
f = f.as_function;
return f.call(context.global, a, b, self);
} else if (typeof f === "function") {
return f.call(context.global, a, b, self);
}
} else {
return 0;
}
}
sub(context, a, b, self) {
var f, obj;
if (Array.isArray(a)) {
obj = context.global.List;
} else if (typeof a === "string") {
if (isFinite(a)) {
a -= b;
if (isFinite(a)) {
return a;
} else {
return 0;
}
} else {
obj = context.global.String;
}
} else {
obj = a;
}
f = obj["-"];
while ((f == null) && (obj.class != null)) {
obj = obj.class;
f = obj["-"];
}
if (f == null) {
f = context.global.Object["-"];
}
if (f != null) {
if (f instanceof Routine) {
if (f.as_function == null) {
f.as_function = this.routineAsApplicableFunction(f, context);
}
f = f.as_function;
return f.call(context.global, a, b, self);
} else if (typeof f === "function") {
return f.call(context.global, a, b, self);
}
} else {
return 0;
}
}
negate(context, a) {
var f, obj;
if (Array.isArray(a)) {
obj = context.global.List;
} else if (typeof a === "string") {
if (isFinite(a)) {
return -a;
} else {
obj = context.global.String;
}
} else {
obj = a;
}
f = obj["-"];
while ((f == null) && (obj.class != null)) {
obj = obj.class;
f = obj["-"];
}
if (f == null) {
f = context.global.Object["-"];
}
if (f != null) {
if (f instanceof Routine) {
if (f.as_function == null) {
f.as_function = this.routineAsApplicableFunction(f, context);
}
f = f.as_function;
return f.call(context.global, 0, a);
} else if (typeof f === "function") {
return f.call(context.global, 0, a);
}
} else {
return 0;
}
}
mul(context, a, b, self) {
var f, obj;
if (Array.isArray(a)) {
obj = context.global.List;
} else if (typeof a === "string") {
if (isFinite(a)) {
a *= b;
if (isFinite(a)) {
return a;
} else {
return 0;
}
} else {
obj = context.global.String;
}
} else {
obj = a;
}
f = obj["*"];
while ((f == null) && (obj.class != null)) {
obj = obj.class;
f = obj["*"];
}
if (f == null) {
f = context.global.Object["*"];
}
if (f != null) {
if (f instanceof Routine) {
if (f.as_function == null) {
f.as_function = this.routineAsApplicableFunction(f, context);
}
f = f.as_function;
return f.call(context.global, a, b, self);
} else if (typeof f === "function") {
return f.call(context.global, a, b, self);
}
} else {
return 0;
}
}
div(context, a, b, self) {
var f, obj;
if (Array.isArray(a)) {
obj = context.global.List;
} else if (typeof a === "string") {
if (isFinite(a)) {
a /= b;
if (isFinite(a)) {
return a;
} else {
return 0;
}
} else {
obj = context.global.String;
}
} else {
obj = a;
}
f = obj["/"];
while ((f == null) && (obj.class != null)) {
obj = obj.class;
f = obj["/"];
}
if (f == null) {
f = context.global.Object["/"];
}
if (f != null) {
if (f instanceof Routine) {
if (f.as_function == null) {
f.as_function = this.routineAsApplicableFunction(f, context);
}
f = f.as_function;
return f.call(context.global, a, b, self);
} else if (typeof f === "function") {
return f.call(context.global, a, b, self);
}
} else {
return 0;
}
}
band(context, a, b, self) {
var f, obj;
if (Array.isArray(a)) {
obj = context.global.List;
} else if (typeof a === "string") {
if (isFinite(a)) {
a &= b;
if (isFinite(a)) {
return a;
} else {
return 0;
}
} else {
obj = context.global.String;
}
} else {
obj = a;
}
f = obj["&"];
while ((f == null) && (obj.class != null)) {
obj = obj.class;
f = obj["&"];
}
if (f == null) {
f = context.global.Object["&"];
}
if (f != null) {
if (f instanceof Routine) {
if (f.as_function == null) {
f.as_function = this.routineAsApplicableFunction(f, context);
}
f = f.as_function;
return f.call(context.global, a, b, self);
} else if (typeof f === "function") {
return f.call(context.global, a, b, self);
}
} else {
return 0;
}
}
bor(context, a, b, self) {
var f, obj;
if (Array.isArray(a)) {
obj = context.global.List;
} else if (typeof a === "string") {
if (isFinite(a)) {
a |= b;
if (isFinite(a)) {
return a;
} else {
return 0;
}
} else {
obj = context.global.String;
}
} else {
obj = a;
}
f = obj["|"];
while ((f == null) && (obj.class != null)) {
obj = obj.class;
f = obj["|"];
}
if (f == null) {
f = context.global.Object["|"];
}
if (f != null) {
if (f instanceof Routine) {
if (f.as_function == null) {
f.as_function = this.routineAsApplicableFunction(f, context);
}
f = f.as_function;
return f.call(context.global, a, b, self);
} else if (typeof f === "function") {
return f.call(context.global, a, b, self);
}
} else {
return 0;
}
}
run(context) {
var a, arg1, args, argv, b, c, call_stack, call_stack_index, call_super, call_supername, con, cs, err, f, fc, field, global, i, i1, i2, id, index, ir, iter, iterator, j, k, key, l, len, length, local_index, locals, locals_offset, loop_by, loop_to, m, n, name, o, obj, object, op_count, op_index, opcodes, p, parent, q, r, rc, ref, ref1, ref10, ref11, ref12, ref13, ref14, ref2, ref3, ref4, ref5, ref6, ref7, ref8, ref9, res, restore_op_index, routine, s, sleep_time, src, stack, stack_index, sup, t, token, u, v, value, w;
routine = this.routine;
opcodes = this.routine.opcodes;
arg1 = this.routine.arg1;
length = opcodes.length;
op_index = this.op_index;
stack = this.stack;
stack_index = this.stack_index;
locals = this.locals;
local_index = this.local_index;
global = this.global || context.global;
object = this.object || global;
call_stack = this.call_stack;
call_stack_index = this.call_stack_index;
call_super = this.call_super || global;
call_supername = this.call_supername || "";
locals_offset = this.locals_offset;
op_count = 0;
restore_op_index = -1;
while (op_index < length) {
switch (opcodes[op_index]) {
case 1: // OPCODE_TYPE
v = stack[stack_index];
switch (typeof v) {
case "number":
stack[stack_index] = "number";
break;
case "string":
stack[stack_index] = "string";
break;
case "function":
stack[stack_index] = "function";
break;
case "object":
if (Array.isArray(v)) {
stack[stack_index] = "list";
} else if (v instanceof Routine) {
stack[stack_index] = "function";
} else {
stack[stack_index] = "object";
}
}
op_index++;
break;
case 2: // OPCODE_TYPE_VARIABLE
v = object[arg1[op_index]];
if (v == null) {
v = global[arg1[op_index]];
}
if (v == null) {
stack[++stack_index] = 0;
} else {
switch (typeof v) {
case "number":
stack[++stack_index] = "number";
break;
case "string":
stack[++stack_index] = "string";
break;
case "function":
stack[++stack_index] = "function";
break;
default:
if (Array.isArray(v)) {
stack[++stack_index] = "list";
} else if (v instanceof Routine) {
stack[++stack_index] = "function";
} else {
stack[++stack_index] = "object";
}
}
}
op_index++;
break;
case 3: // OPCODE_TYPE_PROPERTY
v = stack[stack_index - 1][stack[stack_index]];
if (v == null) {
stack[--stack_index] = 0;
} else {
switch (typeof v) {
case "number":
stack[--stack_index] = "number";
break;
case "string":
stack[--stack_index] = "string";
break;
case "function":
stack[--stack_index] = "function";
break;
default:
if (Array.isArray(v)) {
stack[--stack_index] = "list";
} else if (v instanceof Routine) {
stack[--stack_index] = "function";
} else {
stack[--stack_index] = "object";
}
}
}
op_index++;
break;
case 4: // OPCODE_LOAD_IMPORT
stack[++stack_index] = routine.import_values[arg1[op_index++]];
break;
case 5: // OPCODE_LOAD_THIS
stack[++stack_index] = object;
op_index++;
break;
case 6: // OPCODE_LOAD_GLOBAL
stack[++stack_index] = global;
op_index++;
break;
case 10: // CODE_LOAD_VALUE
stack[++stack_index] = arg1[op_index++];
break;
case 11: // OPCODE_LOAD_LOCAL
stack[++stack_index] = locals[locals_offset + arg1[op_index++]];
break;
case 12: // OPCODE_LOAD_VARIABLE
name = arg1[op_index];
v = object[name];
if ((v == null) && (object.class != null)) {
obj = object;
while ((v == null) && (obj.class != null)) {
obj = obj.class;
v = obj[name];
}
}
if (v == null) {
v = global[name];
}
if ((v == null) && !routine.ref[op_index].nowarning) {
token = routine.ref[op_index].token;
id = token.tokenizer.filename + "-" + token.line + "-" + token.column;
if (!context.warnings.using_undefined_variable[id]) {
context.warnings.using_undefined_variable[id] = {
file: token.tokenizer.filename,
line: token.line,
column: token.column,
expression: name
};
}
}
stack[++stack_index] = v != null ? v : 0;
op_index++;
break;
case 13: // OPCODE_LOAD_LOCAL_OBJECT
o = locals[locals_offset + arg1[op_index]];
if (typeof o !== "object") {
o = locals[locals_offset + arg1[op_index]] = {};
token = routine.ref[op_index].token;
id = token.tokenizer.filename + "-" + token.line + "-" + token.column;
if (!context.warnings.assigning_field_to_undefined[id]) {
context.warnings.assigning_field_to_undefined[id] = {
file: token.tokenizer.filename,
line: token.line,
column: token.column,
expression: token.value
};
}
}
stack[++stack_index] = o;
op_index++;
break;
case 14: // OPCODE_LOAD_VARIABLE_OBJECT
name = arg1[op_index];
obj = object;
v = obj[name];
while ((v == null) && (obj.class != null)) {
obj = obj.class;
v = obj[name];
}
if ((v == null) && (global[name] != null)) {
obj = global;
v = global[name];
}
if ((v == null) || typeof v !== "object") {
v = obj[name] = {};
token = routine.ref[op_index].token;
id = token.tokenizer.filename + "-" + token.line + "-" + token.column;
if (!context.warnings.assigning_field_to_undefined[id]) {
context.warnings.assigning_field_to_undefined[id] = {
file: token.tokenizer.filename,
line: token.line,
column: token.column,
expression: arg1[op_index]
};
}
}
stack[++stack_index] = v;
op_index++;
break;
case 15: // OPCODE_POP
stack_index--;
op_index++;
break;
case 16: // OPCODE_LOAD_PROPERTY
obj = stack[stack_index - 1];
name = stack[stack_index];
v = obj[name];
while ((v == null) && (obj.class != null)) {
obj = obj.class;
v = obj[name];
}
if (v == null) {
v = 0;
if (!routine.ref[op_index].nowarning) {
routine.ref[op_index].nowarning = true;
if (!Array.isArray(obj)) {
token = routine.ref[op_index].token;
id = token.tokenizer.filename + "-" + token.line + "-" + token.column;
context.warnings.using_undefined_variable[id] = {
file: token.tokenizer.filename,
line: token.line,
column: token.column,
expression: name
};
}
}
}
stack[--stack_index] = v;
op_index++;
break;
case 17: // OPCODE_LOAD_PROPERTY_OBJECT
v = stack[stack_index - 1][stack[stack_index]];
if (typeof v !== "object") {
v = stack[stack_index - 1][stack[stack_index]] = {};
token = routine.ref[op_index].token;
id = token.tokenizer.filename + "-" + token.line + "-" + token.column;
if (!context.warnings.assigning_field_to_undefined[id]) {
context.warnings.assigning_field_to_undefined[id] = {
file: token.tokenizer.filename,
line: token.line,
column: token.column,
expression: stack[stack_index]
};
}
}
stack[--stack_index] = v;
op_index++;
break;
case 18: // OPCODE_CREATE_OBJECT
stack[++stack_index] = {};
op_index++;
break;
case 19: // OPCODE_MAKE_OBJECT
if (typeof stack[stack_index] !== "object") {
stack[stack_index] = {};
}
op_index++;
break;
case 20: // OPCODE_CREATE_ARRAY
stack[++stack_index] = [];
op_index++;
break;
case 21: // OPCODE_STORE_LOCAL
locals[locals_offset + arg1[op_index]] = stack[stack_index];
op_index++;
break;
case 22: // OPCODE_STORE_LOCAL_POP
locals[locals_offset + arg1[op_index]] = stack[stack_index--];
op_index++;
break;
case 23: // OPCODE_STORE_VARIABLE
object[arg1[op_index++]] = stack[stack_index];
break;
case 24: // OPCODE_CREATE_PROPERTY
obj = stack[stack_index - 2];
field = stack[stack_index - 1];
obj[field] = stack[stack_index];
stack_index -= 2;
op_index++;
break;
case 25: // OPCODE_STORE_PROPERTY
obj = stack[stack_index - 2];
field = stack[stack_index - 1];
stack[stack_index - 2] = obj[field] = stack[stack_index];
stack_index -= 2;
op_index++;
break;
case 26: // OPCODE_DELETE
obj = stack[stack_index - 1];
field = stack[stack_index];
delete obj[field];
stack[stack_index -= 1] = 0;
op_index++;
break;
case 27: // OPCODE_UPDATE_CLASS
name = arg1[op_index];
// TODO: set classname to variable name
if ((object[name] != null) && typeof object[name] === "object") {
obj = object[name];
src = stack[stack_index];
for (key in src) {
value = src[key];
obj[key] = value;
}
} else {
object[name] = stack[stack_index];
}
op_index++;
break;
case 28: // OPCODE_CREATE_CLASS
res = {};
parent = stack[stack_index];
if (parent) {
res.class = parent;
} else if (arg1[op_index]) {
res.class = arg1[op_index];
}
stack[stack_index] = res;
op_index++;
break;
case 29: // OPCODE_NEW_CALL
c = stack[stack_index];
args = arg1[op_index];
if (typeof c === "function") {
a = [];
for (i = j = 0, ref = args - 1; j <= ref; i = j += 1) {
a.push(stack[stack_index - args + i]);
}
stack_index -= args;
// NEW CALL is followed by a POP (to get rid of constructor return value)
stack[stack_index - 1] = new c(...a);
op_index++;
} else {
this.resolveParentClass(c, global);
res = {
class: c
};
con = c.constructor;
while (!con && (c.class != null)) {
c = c.class;
con = c.constructor;
}
if ((con != null) && con instanceof Routine) {
stack[stack_index - args - 1] = res;
stack_index--;
cs = call_stack[call_stack_index] || (call_stack[call_stack_index] = {});
call_stack_index++;
cs.routine = routine;
cs.object = object;
cs.super = call_super;
cs.supername = call_supername;
cs.op_index = op_index + 1;
locals_offset += routine.locals_size;
routine = con;
opcodes = con.opcodes;
arg1 = con.arg1;
op_index = 0;
length = opcodes.length;
object = res;
call_super = c;
call_supername = "constructor";
if (routine.uses_arguments) {
argv = stack.slice(stack_index - args + 1, stack_index + 1);
}
if (args < con.num_args) {
for (i = k = ref1 = args + 1, ref2 = con.num_args; k <= ref2; i = k += 1) {
stack[++stack_index] = 0;
}
} else if (args > con.num_args) {
stack_index -= args - con.num_args;
}
stack[++stack_index] = args;
if (routine.uses_arguments) {
stack[++stack_index] = argv;
}
} else {
stack_index -= args;
stack[stack_index - 1] = res;
op_index++;
}
}
break;
case 30: // OPCODE_ADD
b = stack[stack_index--];
a = stack[stack_index];
if (typeof a === "number") {
a += b;
stack[stack_index] = isFinite(a) || typeof b === "string" ? a : 0;
} else {
stack[stack_index] = this.add(context, a, b, arg1[op_index]);
}
op_index++;
break;
case 31: // OPCODE_SUB
b = stack[stack_index--];
a = stack[stack_index];
if (typeof a === "number") {
a -= b;
stack[stack_index] = isFinite(a) ? a : 0;
} else {
stack[stack_index] = this.sub(context, a, b, arg1[op_index]);
}
op_index++;
break;
case 32: // OPCODE_MUL
b = stack[stack_index--];
a = stack[stack_index];
if (typeof a === "number") {
a *= b;
stack[stack_index] = isFinite(a) ? a : 0;
} else {
stack[stack_index] = this.mul(context, a, b);
}
op_index++;
break;
case 33: // OPCODE_DIV
b = stack[stack_index--];
a = stack[stack_index];
if (typeof a === "number") {
a /= b;
stack[stack_index] = isFinite(a) ? a : 0;
} else {
stack[stack_index] = this.div(context, a, b);
}
op_index++;
break;
case 34: // OPCODE_MODULO
b = stack[stack_index--];
a = stack[stack_index];
if (typeof a === "number" && typeof b === "number") {
a %= b;
stack[stack_index] = isFinite(a) ? a : 0;
} else {
stack[stack_index] = this.modulo(context, a, b);
}
op_index++;
break;
case 35: // OPCODE_BINARY_AND
b = stack[stack_index--];
a = stack[stack_index];
if (typeof a === "number") {
a &= b;
stack[stack_index] = isFinite(a) ? a : 0;
} else {
stack[stack_index] = this.band(context, a, b);
}
op_index++;
break;
case 36: // OPCODE_BINARY_OR
b = stack[stack_index--];
a = stack[stack_index];
if (typeof a === "number") {
a |= b;
stack[stack_index] = isFinite(a) ? a : 0;
} else {
stack[stack_index] = this.bor(context, a, b);
}
op_index++;
break;
case 37: // OPCODE_SHIFT_LEFT
v = stack[stack_index - 1] << stack[stack_index];
stack[--stack_index] = isFinite(v) ? v : 0;
op_index++;
break;
case 38: // OPCODE_SHIFT_RIGHT
v = stack[stack_index - 1] >> stack[stack_index];
stack[--stack_index] = isFinite(v) ? v : 0;
op_index++;
break;
case 39: // OPCODE_NEGATE
a = stack[stack_index];
if (typeof a === "number") {
stack[stack_index] = -a;
} else {
stack[stack_index] = this.negate(context, a);
}
op_index++;
break;
case 50: // OPCODE_NOT
stack[stack_index] = stack[stack_index] ? 0 : 1;
op_index++;
break;
case 68: // OPCODE_LOAD_PROPERTY_ATOP
obj = stack[stack_index - 1];
name = stack[stack_index];
v = obj[name];
while ((v == null) && (obj.class != null)) {
obj = obj.class;
v = obj[name];
}
if (v == null) {
v = 0;
if (!routine.ref[op_index].nowarning) {
routine.ref[op_index].nowarning = true;
if (!Array.isArray(obj)) {
token = routine.ref[op_index].token;
id = token.tokenizer.filename + "-" + token.line + "-" + token.column;
context.warnings.using_undefined_variable[id] = {
file: token.tokenizer.filename,
line: token.line,
column: token.column,
expression: name
};
}
}
}
stack[++stack_index] = v;
op_index++;
break;
case 40: // OPCODE_EQ
stack[stack_index - 1] = stack[stack_index] === stack[stack_index - 1] ? 1 : 0;
stack_index--;
op_index++;
break;
case 41: // OPCODE_NEQ
stack[stack_index - 1] = stack[stack_index] !== stack[stack_index - 1] ? 1 : 0;
stack_index--;
op_index++;
break;
case 42: // OPCODE_LT
stack[stack_index - 1] = stack[stack_index - 1] < stack[stack_index] ? 1 : 0;
stack_index--;
op_index++;
break;
case 43: // OPCODE_GT
stack[stack_index - 1] = stack[stack_index - 1] > stack[stack_index] ? 1 : 0;
stack_index--;
op_index++;
break;
case 44: // OPCODE_LTE
stack[stack_index - 1] = stack[stack_index - 1] <= stack[stack_index] ? 1 : 0;
stack_index--;
op_index++;
break;
case 45: // OPCODE_GTE
stack[stack_index - 1] = stack[stack_index - 1] >= stack[stack_index] ? 1 : 0;
stack_index--;
op_index++;
break;
case 95: // FORLOOP_INIT
// fix loop_by if not set
iter = arg1[op_index][0];
loop_to = locals[locals_offset + iter + 1] = stack[stack_index - 1];
loop_by = stack[stack_index];
iterator = locals[locals_offset + iter];
stack[--stack_index] = 0; // unload 2 values and load default value
if (loop_by === 0) {
locals[locals_offset + iter + 2] = loop_to > iterator ? 1 : -1;
op_index++;
} else {
locals[locals_offset + iter + 2] = loop_by;
if ((loop_by > 0 && iterator > loop_to) || (loop_by < 0 && iterator < loop_to)) {
op_index = arg1[op_index][1];
} else {
op_index++;
}
}
break;
case 96: // FORLOOP_CONTROL
iter = arg1[op_index][0];
loop_by = locals[locals_offset + iter + 2];
loop_to = locals[locals_offset + iter + 1];
iterator = locals[locals_offset + iter];
iterator += loop_by;
if ((loop_by > 0 && iterator > loop_to) || (loop_by < 0 && iterator < loop_to)) {
op_index++;
} else {
locals[locals_offset + iter] = iterator;
op_index = arg1[op_index][1];
}
if (op_count++ > 100) {
op_count = 0;
if (Date.now() > this.time_limit) {
restore_op_index = op_index;
op_index = length; // stop the loop without adding a condition statement
}
}
break;
case 97: // FORIN_INIT
v = stack[stack_index];
stack[stack_index] = 0; // default result
iterator = arg1[op_index][0];
if (typeof v === "object") {
if (Array.isArray(v)) {
locals[locals_offset + iterator + 1] = v;
} else {
v = locals[locals_offset + iterator + 1] = Object.keys(v);
}
} else if (typeof v === "string") {