VM that runs in the browser and interprets luajit bytecode.
License: MIT License
This package is NOT supported.
You're welcome to use it, all code is MIT licensed by Tim Caswell
I intend for this to be a collection of high quality software that I use in my various personal projects.
I do not, however, feel any obligation to fix issues for others who use it.
Like the MIT license says, you can freely use this software, but it comes with zero warranty.
Hello. This is very interesting project. Maybe Luajit bytecode has changed because nothing seems to work?
test.lua:
local function fact (n)
if n == 0 then
return 1
else
return n * fact(n-1)
end
end
return fact
brozula test.lua
/usr/local/lib/node_modules/brozula/cli.js:114
if (err) throw err;
^
Error: TODO: Implement me
at Object.generators.UGET (/usr/local/lib/node_modules/brozula/brozula.js:652:11)
at generators.ISLT (/usr/local/lib/node_modules/brozula/brozula.js:477:51)
at Array.forEach (native)
at Object.compile (/usr/local/lib/node_modules/brozula/brozula.js:422:10)
at generate (/usr/local/lib/node_modules/brozula/cli.js:49:25)
at Socket.check (/usr/local/lib/node_modules/brozula/cli.js:43:7)
at Socket.EventEmitter.emit (events.js:93:17)
at Pipe.onread (net.js:418:51)
Hey Tim, I'm not seeing a license on this. Would be nice to see an MIT license like Lua itself. (Or BSD, Apache, whatever you prefer)
$ cat ~/luatute/tute-coro.lua
local read = function ( )
return coroutine.yield ( )
end
local get_blah = function ( )
print ( "PRE 1" )
print ( read ( ) )
print ( "PRE 2" )
print ( read ( ) )
print ( "PRE 3" )
print ( read ( ) )
end
-- Create coroutine
local get_blah_co = coroutine.create ( get_blah )
-- Basic dispatcher
while coroutine.status ( get_blah_co ) == "suspended" do
local ok , err_msg = coroutine.resume ( get_blah_co )
if not ok then
print("AN ERROR!",err_msg)
break
end
end
$ ./cli.js -pb ~/luatute/tute-coro.lua
[ { index: 0,
flags: 0,
numparams: 0,
framesize: 1,
bcins:
[ { op: 'GGET',
args: [ 0, 'coroutine', 'index' ] },
{ op: 'TGETS',
args: [ 0, 0, 'yield', 'index' ] },
{ op: 'CALLT',
args: [ 0, 1, 'call' ] } ],
uvdata: [] },
{ index: 1,
flags: 0,
numparams: 0,
framesize: 2,
bcins:
[ { op: 'GGET',
args: [ 0, 'print', 'index' ] },
{ op: 'KSTR',
args: [ 1, 'PRE 1' ] },
{ op: 'CALL',
args: [ 0, 1, 2, 'call' ] },
{ op: 'GGET',
args: [ 0, 'print', 'index' ] },
{ op: 'UGET', args: [ 1, 0 ] },
{ op: 'CALL',
args: [ 1, 0, 1, 'call' ] },
{ op: 'CALLM',
args: [ 0, 1, 0, 'call' ] },
{ op: 'GGET',
args: [ 0, 'print', 'index' ] },
{ op: 'KSTR',
args: [ 1, 'PRE 2' ] },
{ op: 'CALL',
args: [ 0, 1, 2, 'call' ] },
{ op: 'GGET',
args: [ 0, 'print', 'index' ] },
{ op: 'UGET', args: [ 1, 0 ] },
{ op: 'CALL',
args: [ 1, 0, 1, 'call' ] },
{ op: 'CALLM',
args: [ 0, 1, 0, 'call' ] },
{ op: 'GGET',
args: [ 0, 'print', 'index' ] },
{ op: 'KSTR',
args: [ 1, 'PRE 3' ] },
{ op: 'CALL',
args: [ 0, 1, 2, 'call' ] },
{ op: 'GGET',
args: [ 0, 'print', 'index' ] },
{ op: 'UGET', args: [ 1, 0 ] },
{ op: 'CALL',
args: [ 1, 0, 1, 'call' ] },
{ op: 'CALLM',
args: [ 0, 1, 0, 'call' ] },
{ op: 'RET0', args: [ 0, 1 ] } ],
uvdata:
[ { local: true,
immutable: true,
uv: 0 } ] },
{ index: 2,
flags: 3,
numparams: 0,
framesize: 8,
bcins:
[ { op: 'FNEW',
args:
[ 0,
{ index: 0,
flags: 0,
numparams: 0,
framesize: 1,
bcins: [Object],
uvdata: [] },
'gc' ] },
{ op: 'FNEW',
args:
[ 1,
{ index: 1,
flags: 0,
numparams: 0,
framesize: 2,
bcins: [Object],
uvdata: [Object] },
'gc' ] },
{ op: 'GGET',
args: [ 2, 'coroutine', 'index' ] },
{ op: 'TGETS',
args:
[ 2,
2,
'create',
'index' ] },
{ op: 'MOV', args: [ 3, 1 ] },
{ op: 'CALL',
args: [ 2, 2, 2, 'call' ] },
{ op: 'GGET',
args: [ 3, 'coroutine', 'index' ] },
{ op: 'TGETS',
args:
[ 3,
3,
'status',
'index' ] },
{ op: 'MOV', args: [ 4, 2 ] },
{ op: 'CALL',
args: [ 3, 2, 2, 'call' ] },
{ op: 'ISNES',
args: [ 3, 'suspended', 'eq' ] },
{ op: 'JMP', args: [ 3, 13 ] },
{ op: 'LOOP', args: [ 3, 12 ] },
{ op: 'GGET',
args: [ 3, 'coroutine', 'index' ] },
{ op: 'TGETS',
args:
[ 3,
3,
'resume',
'index' ] },
{ op: 'MOV', args: [ 4, 2 ] },
{ op: 'CALL',
args: [ 3, 3, 2, 'call' ] },
{ op: 'IST', args: [ 3 ] },
{ op: 'JMP', args: [ 5, -13 ] },
{ op: 'GGET',
args: [ 5, 'print', 'index' ] },
{ op: 'KSTR',
args: [ 6, 'AN ERROR!' ] },
{ op: 'MOV', args: [ 7, 4 ] },
{ op: 'CALL',
args: [ 5, 1, 3, 'call' ] },
{ op: 'JMP', args: [ 3, 1 ] },
{ op: 'JMP', args: [ 3, -19 ] },
{ op: 'UCLO', args: [ 0, 0 ] },
{ op: 'RET0', args: [ 0, 1 ] } ],
uvdata: [] } ]
$ ./cli.js ~/luatute/tute-coro.lua
/home/daurnimator/src/brozula/interpreter.js:37
throw new Error("Lua error at " + this.protoIndex + "-" + (this.pc-1) + "\
^
Error: Lua error at 2-5
attempt to call a nil value
at Closure.execute (/home/daurnimator/src/brozula/interpreter.js:37:11)
at Closure.toFunction.fn (/home/daurnimator/src/brozula/interpreter.js:45:25)
at /home/daurnimator/src/brozula/cli.js:191:67
at generate (/home/daurnimator/src/brozula/cli.js:73:5)
at /home/daurnimator/src/brozula/cli.js:62:7
at fs.readFile (fs.js:176:14)
at Object.oncomplete (fs.js:297:15)
Hi, I'm getting some weird results with the -p option:
$ cat foobar.lua
print "foobar"
$ ./cli.js foobar.lua
foobar
$ ./cli.js -p foobar.lua
[ { index: 0,
flags: 2,
numparams: 0,
framesize: 2,
bcins:
[ { op: 'GGET', args: [Object] },
{ op: 'KSTR', args: [Object] },
{ op: 'CALL', args: [Object] },
{ op: 'RET0', args: [Object] } ],
uvdata: [] } ]
This is with node 0.10.1. I'm digging around to try to figure out what's going on...
$ cat ~/luatute/tute-oo.lua
local mt = {
__index = function ( ob , k )
if ob.parent then
return ob.parent [ k ]
end
end ;
}
local root = setmetatable ( {
parent = nil
} , mt )
function root:say(phrase)
io.stdout:write ( tostring(self) , " says " , phrase , "\n" )
end
function root:derive ( newname )
return setmetatable ( {
parent = self ;
} , mt )
end
root:say ( "I am root" )
local foo = root:derive ( )
foo:say ( "I am foo" )
function foo:say ( phrase )
io.stdout:write ( tostring(self) , " annouces " , phrase , "\n" )
end
foo:say ( "I am foo" )
root:say ( "I am root" )
$ ./cli.js ~/luatute/tute-oo.lua
/home/daurnimator/src/brozula/interpreter.js:37
throw new Error("Lua error at " + this.protoIndex + "-" + (this.pc-1) + "\
^
Error: Lua error at 4-14
Error: Lua error at 1-3
attempt to index a nil value
at Closure.execute (/home/daurnimator/src/brozula/interpreter.js:37:11)
at Closure.toFunction.fn (/home/daurnimator/src/brozula/interpreter.js:45:25)
at /home/daurnimator/src/brozula/cli.js:191:67
at generate (/home/daurnimator/src/brozula/cli.js:73:5)
at /home/daurnimator/src/brozula/cli.js:62:7
at fs.readFile (fs.js:176:14)
at Object.oncomplete (fs.js:297:15)
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