Editing Generate vs Interpret

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Test case details

Title *

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Description (in case you feel further explanation is needed)(Markdown syntax is allowed)

Are you a spammer? (just answer the question)

Preparation code

Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries)

Include JavaScript libraries as follows: <script src="//cdn.ext/library.js"></script>

Define setup for all tests (variables, functions, arrays or other objects that will be used in the tests) (runs before each clocked test loop, outside of the timed code region) (e.g. define local test variables, reset global variables, clear canvas, etc.) (see FAQ)

// Used to consume bytes from a bytecode stream
function Parser(buffer) {
  this.buffer = buffer;
  this.index = 0;
  this.mark = 0;
}
Parser.prototype.B = function () {
  return this.buffer[this.index++];
};
// Consume 16 bit value from stream and move pointer
Parser.prototype.H = function () {
  var value = this.buffer.readUInt16LE(this.index);
  this.index += 2;
  return value;
};
// Consume 32 bit value from stream and move pointer
Parser.prototype.W = function () {
  var value = this.buffer.readUInt32LE(this.index);
  this.index += 4;
  return value;
};
// Decode ULEB128 from the stream
// http://en.wikipedia.org/wiki/LEB128
Parser.prototype.U = function () {
  var value = 0;
  var shift = 0;
  do {
    var byte = this.buffer[this.index++];
    value |= (byte & 0x7f) << shift;
    shift += 7;
  } while (byte >= 0x80);
  return value >>> 0;
};

// For mapping enum integer values to opcode names
var opcodes = [
  "ISLT", "ISGE", "ISLE", "ISGT", "ISEQV", "ISNEV", "ISEQS", "ISNES", "ISEQN",
  "ISNEN", "ISEQP", "ISNEP", "ISTC", "ISFC", "IST", "ISF", "MOV", "NOT", "UNM",
  "LEN", "ADDVN", "SUBVN", "MULVN", "DIVVN", "MODVN", "ADDNV", "SUBNV", "MULNV",
  "DIVNV", "MODNV", "ADDVV", "SUBVV", "MULVV", "DIVVV", "MODVV", "POW", "CAT",
  "KSTR", "KCDATA", "KSHORT", "KNUM", "KPRI", "KNIL", "UGET", "USETV", "USETS",
  "USETN", "USETP", "UCLO", "FNEW", "TNEW", "TDUP", "GGET", "GSET", "TGETV",
  "TGETS", "TGETB", "TSETV", "TSETS", "TSETB", "TSETM", "CALLM", "CALL",
  "CALLMT", "CALLT", "ITERC", "ITERN", "VARG", "ISNEXT", "RETM", "RET", "RET0",
  "RET1", "FORI", "JFORI", "FORL", "IFORL", "JFORL", "ITERL", "IITERL",
  "JITERL", "LOOP", "ILOOP", "JLOOP", "JMP", "FUNCF", "IFUNCF", "JFUNCF",
  "FUNCV", "IFUNCV", "JFUNCV", "FUNCC", "FUNCCW"
];

var kgctypes = ["CHILD", "TAB", "I64", "U64", "COMPLEX", "STR"];
var ktabtypes = ["NIL", "FALSE", "TRUE", "INT", "NUM", "STR"];

// Read a constant table key or value
function readktabk(parser) {
  var ktabtype = parser.U();
  return ktabdecs[ktabtypes[ktabtype] || "STR"](parser, ktabtype);
}

function readknum(parser) {
  var isnum = parser.buffer[parser.index] & 1;
  var lo = parser.U() >> 1;
  if (isnum) {
    var buf = new Buffer(8);
    var hi = parser.U();
    buf.writeUInt32LE(lo >>> 0, 0);
    buf.writeUInt32LE(hi, 4);
    var num = buf.readDoubleLE(0);
    return num;
  }
  return lo;
}

function Env() {}
Env.prototype.print = function () {

}

function Proto(buffer, env) {
  this.env = env || {};
  var parser = new Parser(buffer);

// flagsB numparamsB framesizeB numuvB numkgcU numknU numbcU [debuglenU [firstlineU numlineU]]
  var flags = parser.B();
  var numparams = parser.B();
  var framesize = parser.B();
  var numuv = parser.B();
  var numkgc = parser.U();
  var numkn = parser.U();
  var numbc = parser.U();

// bcinsW* uvdataH* kgc* knum*
  this.bc = buffer.slice(parser.index, parser.index + numbc * 4);
  parser.index += numbc * 4;

// Make sure we consumed all the bytes properly
  if (parser.index !== buffer.length) throw new Error((buffer.length - parser.index) + " bytes leftover");

this.slots = new Array(framesize);
  this.uvdata = uvdata;
  this.constants = constants;
}

Proto.prototype.execute = function () {
  this.pc = 0;
  var ret;
  while (!(ret = this[opcodes[this.bc[offset = this.pc * 4]]](offset))) {}
  return ret;
}

Proto.prototype.TDUP = function (offset) {
  var a = this.bc[offset + 1];
  var d = this.bc.readUInt16LE(offset + 2);
  d = this.constants[this.constants.length - d - 1];
  this.slots[a] = JSON.parse(JSON.stringify(d));
  this.pc++;
};
Proto.prototype.KSHORT = function (offset) {
  var a = this.bc[offset + 1];
  var d = this.bc.readInt16LE(offset + 2);
  this.slots[a] = d;
  this.pc++;
};
Proto.prototype.GGET = function (offset) {
  var a = this.bc[offset + 1];
  var d = this.bc.readUInt16LE(offset + 2);
  d = this.constants[this.constants.length - d - 1];
  this.slots[a] = this.env[d];
  this.pc++;
};
Proto.prototype.KSTR = function (offset) {
  var a = this.bc[offset + 1];
  var d = this.bc.readUInt16LE(offset + 2);
  d = this.constants[this.constants.length - d - 1];
  this.slots[a] = d;
  this.pc++;
};
Proto.prototype.CALL = function (offset) {
  var a = this.bc[offset + 1];
  var b = this.bc[offset + 3];
  var c = this.bc[offset + 2];
  var args = this.slots.slice(a + 1, a + c);
  var ret = this.slots[a].apply(null, args);
  for (var i = 0; i < b - 1; i++) {
    this.slots[a + i] = ret[i];
  }
  this.pc++;
};
Proto.prototype.TGETV = function (offset) {
  var a = this.bc[offset + 1];
  var b = this.bc[offset + 3];
  var c = this.bc[offset + 2];
  this.slots[a] = this.slots[b][this.slots[c]];
  this.pc++;
};
Proto.prototype.ISF = function (offset) {
  var d = this.bc.readUInt16LE(offset + 2);
  d = this.slots[d];
  if (d === null || d == false || d == undefined) {
    this.pc++;
  }
  else {
    this.pc += 2;
  }
};

Proto.prototype.JMP = function (offset) {
  var d = this.bc.readUInt16LE(offset + 2) - 0x8000 + 1;
  this.pc += d;
};

Proto.prototype.LOOP = function (offset) {
  this.pc++;
};

Proto.prototype.ADDVN = function (offset) {
  var a = this.bc[offset + 1];
  var b = this.bc[offset + 3];
  var c = this.bc[offset + 2];
  c = this.constants[c];
  this.slots[a] = this.slots[b] + c;
  this.pc++;
};

Proto.prototype.RET0 = function (offset) {
  return [];
};

Proto.prototype.exec2 = function () {
  var pc = 0;
  var offset;
  for(;;pc++) {
    switch(opcodes[this.bc[offset = pc * 4]]) {

case "TDUP":
        var a = this.bc[offset + 1];
        var d = this.bc.readUInt16LE(offset + 2);
        d = this.constants[this.constants.length - d - 1];
        this.slots[a] = JSON.parse(JSON.stringify(d));
        continue;

case "KSHORT":
        var a = this.bc[offset + 1];
        var d = this.bc.readInt16LE(offset + 2);
        this.slots[a] = d;
        continue;

case "GGET":
        var a = this.bc[offset + 1];
        var d = this.bc.readUInt16LE(offset + 2);
        d = this.constants[this.constants.length - d - 1];
        this.slots[a] = this.env[d];
        continue;

case "KSTR":
        var a = this.bc[offset + 1];
        var d = this.bc.readUInt16LE(offset + 2);
        d = this.constants[this.constants.length - d - 1];
        this.slots[a] = d;
        continue;

case "CALL":
        var a = this.bc[offset + 1];
        var b = this.bc[offset + 3];
        var c = this.bc[offset + 2];
        var args = this.slots.slice(a + 1, a + c);
        var ret = this.slots[a].apply(null, args);
        for (var i = 0; i < b - 1; i++) {
          this.slots[a + i] = ret[i];
        }
        continue;

case "TGETV":
        var a = this.bc[offset + 1];
        var b = this.bc[offset + 3];
        var c = this.bc[offset + 2];
        this.slots[a] = this.slots[b][this.slots[c]];
        continue;

case "ISF":
        var d = this.bc.readUInt16LE(offset + 2);
        d = this.slots[d];
        if (!(d === null || d == false || d == undefined)) {
          pc++;
        }
        continue;

case "JMP":
        var d = this.bc.readUInt16LE(offset + 2) - 0x8000;
        pc += d;
        continue;

case "LOOP":
        continue;

case "ADDVN":
        var a = this.bc[offset + 1];
        var b = this.bc[offset + 3];
        var c = this.bc[offset + 2];
        c = this.constants[c];
        this.slots[a] = this.slots[b] + c;
        continue;

case "RET0":
        return [];
    }
  }
}

// Set up some global functions
var _G = {
  print: function () {
    console.log(Array.prototype.join.call(arguments, " "));
    return [];
  }
};

var _G2 = {
  print: function () {
    //console.log(Array.prototype.join.call(arguments, " "));
    return [];
  }
};

Title

Async (check if this is an asynchronous test)

Code

p2.exec2();