MoonPlus

MoonPlus is a compiler for Moonscript language 0.5.0 written in C++ which could be 2~4 times faster than the original Moonscript compiler written in Moonscript.

Features

No other dependencies needed except modified parserlib library from Achilleas Margaritis with some performance enhancement. lpeg library is no longer needed.
Written in C++17.
Support full Moonscript language features, generate the same Lua codes with original compiler.
Reserve line numbers from source Moonscript codes in compiled Lua codes to help with debugging.

Minor Changes

Can do slash call with Lua keyword. Generate codes from:

c.repeat.if\then("xyz")\else res

to:

local _call_3 = c["repeat"]["if"]
local _call_4 = _call_3["then"](_call_3, "xyz")
_call_4["else"](_call_4, res)

Add a compiler flag reuseVariable which can help generate reduced Lua codes. For example, when set reuseVariable to true, MoonPlus will generate codes from:

with leaf
  .world 1,2,3

with leaf
  g = .what.is.this
  print g

for x in *something
  print x

to:

leaf.world(1, 2, 3)
do
  local g = leaf.what.is.this
  print(g)
end
for _index_0 = 1, #something do
  local x = something[_index_0]
  print(x)
end

instead of:

do
  local _with_0 = leaf
  _with_0.world(1, 2, 3)
end
do
  local _with_0 = leaf
  local g = _with_0.what.is.this
end
local _list_0 = something
for _index_0 = 1, #_list_0 do
  local x = _list_0[_index_0]
  print(x)
end

Standalone Compiler Usage

Test compiler with make test. Run moonc complier in project folder with:

make
./moonc -h

License

MIT