fennel implemention: love2d lite editor w/ custom commands & imgui

This commit is contained in:
Jeremy Penner 2020-09-16 22:34:36 -04:00
parent 0eb081d040
commit 4918867140
17 changed files with 4657 additions and 0 deletions

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(local {: stream : kvstream : one} (require "stream"))
(local opcodes {})
; op mode arg
; single-byte ops
(let [ops
{:php 0x08 :plp 0x28 :pha 0x48 :pla 0x68 :dey 0x88 :tay 0xa8 :iny 0xc8 :inx 0xe8
:clc 0x18 :sec 0x38 :cli 0x58 :sei 0x78 :tya 0x98 :clv 0xb8 :cld 0xd8 :sed 0xf8
:txa 0x8a :txs 0x9a :tax 0xaa :tsx 0xba :dex 0xca :nop 0xea :brk 0x00 :rti 0x40
:rts 0x60}]
(each [opcode byte (pairs ops)]
(tset opcodes opcode (fn [mode] (if mode nil byte)))))
; branch ops
(let [ops {:bpl 0x10 :bmi 0x30 :bvc 0x50 :bvs 0x70 :bcc 0x90 :bcs 0xb0 :bne 0xd0 :beq 0xf0}]
(each [opcode byte (pairs ops)]
(tset opcodes opcode (fn [mode] (if (= mode :rel) byte nil)))))
(set opcodes.jsr (fn [mode] (if (= mode :abs) 0x20 nil)))
; aaabbbcc ops
(fn aaabbbcc [aaa cc modemap]
(local base (bit.bor cc (bit.lshift aaa 5)))
(fn [mode]
(local bbb (. modemap mode))
(if bbb (bit.bor base (bit.lshift bbb 2)) nil)))
(fn indexed-modes [...]
(let [modemap {}]
(each [index mode (pairs [...])]
(tset modemap mode (- index 1)))
modemap))
(fn without-modes [modemap ...]
(let [newmodemap (table.clone modemap)]
(each [_ mode (pairs [...])]
(tset newmodemap mode nil))
newmodemap))
(fn only-modes [modemap ...]
(let [newmodemap {}]
(each [_ mode (pairs [...])]
(tset newmodemap mode (. modemap mode)))
newmodemap))
; cc=1 ops
(let [cc1-modes (indexed-modes :zp-x* :zp :imm :abs :zp*-y :zp-x :abs-y :abs-x)
ops {:ora 0 :and 1 :eor 2 :adc 3 :lda 5 :cmp 6 :sbc 7}]
(each [opcode aaa (pairs ops)]
(tset opcodes opcode (aaabbbcc aaa 1 cc1-modes))
(tset opcodes :sta (aaabbbcc 4 1 (without-modes cc1-modes :imm)))))
; cc=2 ops
(let [cc2-modes (indexed-modes nil :zp :a :abs nil :zp-x nil :abs-x)]
(each [opcode aaa (pairs {:asl 0 :rol 1 :lsr 2 :ror 3})]
(tset opcodes opcode (aaabbbcc aaa 2 cc2-modes))
(each [opcode aaa (pairs {:dec 6 :inc 7})]
(tset opcodes opcode (aaabbbcc aaa 2 (without-modes cc2-modes :a))))))
(tset opcodes :stx (aaabbbcc 4 2 (indexed-modes nil :zp nil :abs nil nil :zp-y)))
(tset opcodes :ldx (aaabbbcc 5 2 (indexed-modes :imm :zp nil :abs nil nil :zp-y nil :abs-y)))
; cc=0 ops
(let [cc0-modes (indexed-modes :imm :zp nil :abs nil :zp-x nil :abs-x)]
(tset opcodes :bit (aaabbbcc 1 0 (only-modes cc0-modes :zp :abs)))
(tset opcodes :sty (aaabbbcc 4 0 (only-modes cc0-modes :zp :abs :zp-x)))
(tset opcodes :ldy (aaabbbcc 5 0 cc0-modes))
(each [opcode aaa (pairs {:cpy 6 :cpx 7})]
(tset opcodes opcode (aaabbbcc aaa 0 (only-modes cc0-modes :imm :zp :abs)))))
(tset opcodes :jmp (fn [mode] (match mode :abs 0x4c :abs* 0x6c _ nil)))
(fn size [mode]
(if
(or (= mode nil) (= mode :a)) 1
(= (mode:sub 1 3) :abs) 3
2))
(fn opsize [op] (if (= op.opcode :block) 0 (size op.mode)))
(fn parse-mode-arg [op]
(match op
[_ :a] [:a nil]
([_ imm] ? (= (type imm) "number")) [:imm imm]
([op addr] ? (and (= (type addr) "string") (= (op:sub 1 1) "b"))) [:rel addr] ; branch
([_ addr] ? (= (type addr) "string")) [:addr addr]
[_ addr :x] [:addr-x addr]
[_ addr :y] [:addr-y addr]
[_ [addr] :y] [:zp*-y addr]
[_ [addr :x]] [:zp-x* addr]
[_ [addr]] [:abs* addr]
[_] [nil nil]
_ (error (.. "Unrecognized syntax" (fv op)))))
(fn parse-ops [block ops]
(var index 1)
(each [_ op (ipairs ops)]
(if (= (type op) "string")
(tset block.symbols op index)
(let [opcode (. op 1)]
(if
(. opcodes opcode)
(let [[mode arg] (parse-mode-arg op)]
(table.insert block.code {: opcode : mode : arg}))
(= opcode :block)
(let [ops (table.clone op)]
(table.remove ops 1)
(table.insert block.code (parse-ops {: opcode :code [] :symbols {}} ops)))
(error (.. "Unrecognized opcode " (fv opcode))))
(set index (+ index 1)))))
block)
(fn block [org ...] (parse-ops {:type :code : org :code [] :symbols {}} [...]))
(fn db [org init] {:type :var : org : init :size 1})
(fn dw [org init] {:type :var : org : init :size 2})
(fn allot [org size] {:type :var : org : size})
(fn make-env [blocks]
{: blocks
:push (fn [self block]
(make-env
(-> (stream self.blocks)
(: :concat (one block))
(: :tolist))))
:lookup
(fn [self name]
(-> (stream self.blocks)
(: :reverse)
(: :map
(fn [block]
(let [symbol (. block.symbols name)]
(match (type symbol)
"number" (. block.code symbol)
"table" symbol
_ nil))))
(: :filter (fn [symbol] symbol))
(: :first)))
:lookup-block
(fn [self name]
(if
(-> (stream self.blocks)
(: :skip 1)
(: :filter (fn [block] (. block.symbols name)))
(: :next))
(. self.blocks 2)
(. (. self.blocks 1) name)))
:is-zp? (fn [self name] (< (. (self:lookup-block name) :org) 0x100))})
(fn op-stream [env block]
(-> (stream block.code)
(: :map
(fn [op]
(if (= op.opcode :block)
(: (one op env)
:concat (op-stream (env:push op) op))
(one op env))))
(: :flatten)))
(fn int8-to-bytes [i]
(string.char (bit.band i 0xff)))
(fn int16-to-bytes [i]
(string.char (bit.band i 0xff) (bit.band (bit.rshift i 8) 0xff)))
(fn program []
{:symbols {}
:start-symbol :main
:add (fn [self name elem] (tset self.symbols name elem))
:block (fn [self name org ...] (self:add name (block org ...)))
:db (fn [self name org init] (self:add name (db org init)))
:dw (fn [self name org init] (self:add name (dw org init)))
:allot (fn [self name org size] (self:add name (allot org size)))
:op-stream
(fn [self block] (op-stream (make-env [self block]) block))
:patch-addr-modes
(fn [self]
(each [name block (pairs self.symbols)]
(each [op env (: (self:op-stream block) :iter)]
(when (and op.mode (= (op.mode:sub 1 4) :addr))
(let [zp-mode (.. :zp (op.mode:sub 5))
abs-mode (.. :abs (op.mode:sub 5))
is-zp (and ((. opcodes op.opcode) zp-mode) (env:is-zp? op.arg))]
(set op.mode (if is-zp zp-mode abs-mode)))))))
:allocate
(fn [self org size org-addr]
(var addr (. org-addr org))
(when (= nil addr)
(tset org-addr org org)
(set addr org))
(tset org-addr org (+ addr size))
addr)
:allocate-var-block
(fn [self block org-addr]
(set block.addr (self:allocate block.org block.size org-addr)))
:allocate-code-block
(fn [self block org-addr]
(set block.addr (self:allocate block.org 0 org-addr))
(each [op env (: (self:op-stream block) :iter)]
(set op.addr (self:allocate block.org (opsize op) org-addr))))
:allocate-addresses
(fn [self]
(let [org-addr {}]
(each [name block (pairs self.symbols)]
(match block.type
:var (self:allocate-var-block block org-addr)
:code (self:allocate-code-block block org-addr)))))
:generate-var-block
(fn [self block]
(match block.size
1 (int8-to-bytes (or block.init 0))
2 (int16-to-bytes (or block.init 0))
n (string.rep "\0" n)))
:lookup-addr
(fn [self sym env]
(local op (env:lookup sym))
(if op
op.addr
(tonumber sym)))
:generate-op-arg
(fn [self op env]
(if
(= op.mode :imm) (int8-to-bytes op.arg)
(= op.mode :rel)
(int8-to-bytes (- (self:lookup-addr op.arg env) (+ op.addr 2)))
(= (size op.mode) 2) (int8-to-bytes (self:lookup-addr op.arg env))
(= (size op.mode) 3) (int16-to-bytes (self:lookup-addr op.arg env))
""))
:generate-op
(fn [self op env]
(let [bytegen (. opcodes op.opcode)]
(if bytegen
(.. (int8-to-bytes (bytegen op.mode)) (self:generate-op-arg op env))
"")))
:generate-code-block
(fn [self block]
(var bytes "")
(each [op env (: (self:op-stream block) :iter)]
(set bytes (.. bytes (self:generate-op op env))))
(set block.bytes bytes))
:generate-bytes
(fn [self]
(each [name block (pairs self.symbols)]
(match block.type
:var (self:generate-var-block block)
:code (self:generate-code-block block))))
:assemble
(fn [self]
(self:patch-addr-modes)
(self:allocate-addresses)
(self:generate-bytes))})
program

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function love.conf(t)
t.window.width = 1280
t.window.height = 1000
t.window.resizable = true
end

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../lite/data/

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-- Module options:
local always_try_using_lpeg = true
local register_global_module_table = false
local global_module_name = 'json'
--[==[
David Kolf's JSON module for Lua 5.1/5.2
Version 2.5
For the documentation see the corresponding readme.txt or visit
<http://dkolf.de/src/dkjson-lua.fsl/>.
You can contact the author by sending an e-mail to 'david' at the
domain 'dkolf.de'.
Copyright (C) 2010-2013 David Heiko Kolf
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
--]==]
-- global dependencies:
local pairs, type, tostring, tonumber, getmetatable, setmetatable, rawset =
pairs, type, tostring, tonumber, getmetatable, setmetatable, rawset
local error, require, pcall, select = error, require, pcall, select
local floor, huge = math.floor, math.huge
local strrep, gsub, strsub, strbyte, strchar, strfind, strlen, strformat =
string.rep, string.gsub, string.sub, string.byte, string.char,
string.find, string.len, string.format
local strmatch = string.match
local concat = table.concat
local json = { version = "dkjson 2.5" }
if register_global_module_table then
_G[global_module_name] = json
end
local _ENV = nil -- blocking globals in Lua 5.2
pcall (function()
-- Enable access to blocked metatables.
-- Don't worry, this module doesn't change anything in them.
local debmeta = require "debug".getmetatable
if debmeta then getmetatable = debmeta end
end)
json.null = setmetatable ({}, {
__tojson = function () return "null" end
})
local function isarray (tbl)
local max, n, arraylen = 0, 0, 0
for k,v in pairs (tbl) do
if k == 'n' and type(v) == 'number' then
arraylen = v
if v > max then
max = v
end
else
if type(k) ~= 'number' or k < 1 or floor(k) ~= k then
return false
end
if k > max then
max = k
end
n = n + 1
end
end
if max > 10 and max > arraylen and max > n * 2 then
return false -- don't create an array with too many holes
end
return true, max
end
local escapecodes = {
["\""] = "\\\"", ["\\"] = "\\\\", ["\b"] = "\\b", ["\f"] = "\\f",
["\n"] = "\\n", ["\r"] = "\\r", ["\t"] = "\\t"
}
local function escapeutf8 (uchar)
local value = escapecodes[uchar]
if value then
return value
end
local a, b, c, d = strbyte (uchar, 1, 4)
a, b, c, d = a or 0, b or 0, c or 0, d or 0
if a <= 0x7f then
value = a
elseif 0xc0 <= a and a <= 0xdf and b >= 0x80 then
value = (a - 0xc0) * 0x40 + b - 0x80
elseif 0xe0 <= a and a <= 0xef and b >= 0x80 and c >= 0x80 then
value = ((a - 0xe0) * 0x40 + b - 0x80) * 0x40 + c - 0x80
elseif 0xf0 <= a and a <= 0xf7 and b >= 0x80 and c >= 0x80 and d >= 0x80 then
value = (((a - 0xf0) * 0x40 + b - 0x80) * 0x40 + c - 0x80) * 0x40 + d - 0x80
else
return ""
end
if value <= 0xffff then
return strformat ("\\u%.4x", value)
elseif value <= 0x10ffff then
-- encode as UTF-16 surrogate pair
value = value - 0x10000
local highsur, lowsur = 0xD800 + floor (value/0x400), 0xDC00 + (value % 0x400)
return strformat ("\\u%.4x\\u%.4x", highsur, lowsur)
else
return ""
end
end
local function fsub (str, pattern, repl)
-- gsub always builds a new string in a buffer, even when no match
-- exists. First using find should be more efficient when most strings
-- don't contain the pattern.
if strfind (str, pattern) then
return gsub (str, pattern, repl)
else
return str
end
end
local function quotestring (value)
-- based on the regexp "escapable" in https://github.com/douglascrockford/JSON-js
value = fsub (value, "[%z\1-\31\"\\\127]", escapeutf8)
if strfind (value, "[\194\216\220\225\226\239]") then
value = fsub (value, "\194[\128-\159\173]", escapeutf8)
value = fsub (value, "\216[\128-\132]", escapeutf8)
value = fsub (value, "\220\143", escapeutf8)
value = fsub (value, "\225\158[\180\181]", escapeutf8)
value = fsub (value, "\226\128[\140-\143\168-\175]", escapeutf8)
value = fsub (value, "\226\129[\160-\175]", escapeutf8)
value = fsub (value, "\239\187\191", escapeutf8)
value = fsub (value, "\239\191[\176-\191]", escapeutf8)
end
return "\"" .. value .. "\""
end
json.quotestring = quotestring
local function replace(str, o, n)
local i, j = strfind (str, o, 1, true)
if i then
return strsub(str, 1, i-1) .. n .. strsub(str, j+1, -1)
else
return str
end
end
-- locale independent num2str and str2num functions
local decpoint, numfilter
local function updatedecpoint ()
decpoint = strmatch(tostring(0.5), "([^05+])")
-- build a filter that can be used to remove group separators
numfilter = "[^0-9%-%+eE" .. gsub(decpoint, "[%^%$%(%)%%%.%[%]%*%+%-%?]", "%%%0") .. "]+"
end
updatedecpoint()
local function num2str (num)
return replace(fsub(tostring(num), numfilter, ""), decpoint, ".")
end
local function str2num (str)
local num = tonumber(replace(str, ".", decpoint))
if not num then
updatedecpoint()
num = tonumber(replace(str, ".", decpoint))
end
return num
end
local function addnewline2 (level, buffer, buflen)
buffer[buflen+1] = "\n"
buffer[buflen+2] = strrep (" ", level)
buflen = buflen + 2
return buflen
end
function json.addnewline (state)
if state.indent then
state.bufferlen = addnewline2 (state.level or 0,
state.buffer, state.bufferlen or #(state.buffer))
end
end
local encode2 -- forward declaration
local function addpair (key, value, prev, indent, level, buffer, buflen, tables, globalorder, state)
local kt = type (key)
if kt ~= 'string' and kt ~= 'number' then
return nil, "type '" .. kt .. "' is not supported as a key by JSON."
end
if prev then
buflen = buflen + 1
buffer[buflen] = ","
end
if indent then
buflen = addnewline2 (level, buffer, buflen)
end
buffer[buflen+1] = quotestring (key)
buffer[buflen+2] = ":"
return encode2 (value, indent, level, buffer, buflen + 2, tables, globalorder, state)
end
local function appendcustom(res, buffer, state)
local buflen = state.bufferlen
if type (res) == 'string' then
buflen = buflen + 1
buffer[buflen] = res
end
return buflen
end
local function exception(reason, value, state, buffer, buflen, defaultmessage)
defaultmessage = defaultmessage or reason
local handler = state.exception
if not handler then
return nil, defaultmessage
else
state.bufferlen = buflen
local ret, msg = handler (reason, value, state, defaultmessage)
if not ret then return nil, msg or defaultmessage end
return appendcustom(ret, buffer, state)
end
end
function json.encodeexception(reason, value, state, defaultmessage)
return quotestring("<" .. defaultmessage .. ">")
end
encode2 = function (value, indent, level, buffer, buflen, tables, globalorder, state)
local valtype = type (value)
local valmeta = getmetatable (value)
valmeta = type (valmeta) == 'table' and valmeta -- only tables
local valtojson = valmeta and valmeta.__tojson
if valtojson then
if tables[value] then
return exception('reference cycle', value, state, buffer, buflen)
end
tables[value] = true
state.bufferlen = buflen
local ret, msg = valtojson (value, state)
if not ret then return exception('custom encoder failed', value, state, buffer, buflen, msg) end
tables[value] = nil
buflen = appendcustom(ret, buffer, state)
elseif value == nil then
buflen = buflen + 1
buffer[buflen] = "null"
elseif valtype == 'number' then
local s
if value ~= value or value >= huge or -value >= huge then
-- This is the behaviour of the original JSON implementation.
s = "null"
else
s = num2str (value)
end
buflen = buflen + 1
buffer[buflen] = s
elseif valtype == 'boolean' then
buflen = buflen + 1
buffer[buflen] = value and "true" or "false"
elseif valtype == 'string' then
buflen = buflen + 1
buffer[buflen] = quotestring (value)
elseif valtype == 'table' then
if tables[value] then
return exception('reference cycle', value, state, buffer, buflen)
end
tables[value] = true
level = level + 1
local isa, n = isarray (value)
if n == 0 and valmeta and valmeta.__jsontype == 'object' then
isa = false
end
local msg
if isa then -- JSON array
buflen = buflen + 1
buffer[buflen] = "["
for i = 1, n do
buflen, msg = encode2 (value[i], indent, level, buffer, buflen, tables, globalorder, state)
if not buflen then return nil, msg end
if i < n then
buflen = buflen + 1
buffer[buflen] = ","
end
end
buflen = buflen + 1
buffer[buflen] = "]"
else -- JSON object
local prev = false
buflen = buflen + 1
buffer[buflen] = "{"
local order = valmeta and valmeta.__jsonorder or globalorder
if order then
local used = {}
n = #order
for i = 1, n do
local k = order[i]
local v = value[k]
if v then
used[k] = true
buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
prev = true -- add a seperator before the next element
end
end
for k,v in pairs (value) do
if not used[k] then
buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
if not buflen then return nil, msg end
prev = true -- add a seperator before the next element
end
end
else -- unordered
for k,v in pairs (value) do
buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
if not buflen then return nil, msg end
prev = true -- add a seperator before the next element
end
end
if indent then
buflen = addnewline2 (level - 1, buffer, buflen)
end
buflen = buflen + 1
buffer[buflen] = "}"
end
tables[value] = nil
else
return exception ('unsupported type', value, state, buffer, buflen,
"type '" .. valtype .. "' is not supported by JSON.")
end
return buflen
end
function json.encode (value, state)
state = state or {}
local oldbuffer = state.buffer
local buffer = oldbuffer or {}
state.buffer = buffer
updatedecpoint()
local ret, msg = encode2 (value, state.indent, state.level or 0,
buffer, state.bufferlen or 0, state.tables or {}, state.keyorder, state)
if not ret then
error (msg, 2)
elseif oldbuffer == buffer then
state.bufferlen = ret
return true
else
state.bufferlen = nil
state.buffer = nil
return concat (buffer)
end
end
local function loc (str, where)
local line, pos, linepos = 1, 1, 0
while true do
pos = strfind (str, "\n", pos, true)
if pos and pos < where then
line = line + 1
linepos = pos
pos = pos + 1
else
break
end
end
return "line " .. line .. ", column " .. (where - linepos)
end
local function unterminated (str, what, where)
return nil, strlen (str) + 1, "unterminated " .. what .. " at " .. loc (str, where)
end
local function scanwhite (str, pos)
while true do
pos = strfind (str, "%S", pos)
if not pos then return nil end
local sub2 = strsub (str, pos, pos + 1)
if sub2 == "\239\187" and strsub (str, pos + 2, pos + 2) == "\191" then
-- UTF-8 Byte Order Mark
pos = pos + 3
elseif sub2 == "//" then
pos = strfind (str, "[\n\r]", pos + 2)
if not pos then return nil end
elseif sub2 == "/*" then
pos = strfind (str, "*/", pos + 2)
if not pos then return nil end
pos = pos + 2
else
return pos
end
end
end
local escapechars = {
["\""] = "\"", ["\\"] = "\\", ["/"] = "/", ["b"] = "\b", ["f"] = "\f",
["n"] = "\n", ["r"] = "\r", ["t"] = "\t"
}
local function unichar (value)
if value < 0 then
return nil
elseif value <= 0x007f then
return strchar (value)
elseif value <= 0x07ff then
return strchar (0xc0 + floor(value/0x40),
0x80 + (floor(value) % 0x40))
elseif value <= 0xffff then
return strchar (0xe0 + floor(value/0x1000),
0x80 + (floor(value/0x40) % 0x40),
0x80 + (floor(value) % 0x40))
elseif value <= 0x10ffff then
return strchar (0xf0 + floor(value/0x40000),
0x80 + (floor(value/0x1000) % 0x40),
0x80 + (floor(value/0x40) % 0x40),
0x80 + (floor(value) % 0x40))
else
return nil
end
end
local function scanstring (str, pos)
local lastpos = pos + 1
local buffer, n = {}, 0
while true do
local nextpos = strfind (str, "[\"\\]", lastpos)
if not nextpos then
return unterminated (str, "string", pos)
end
if nextpos > lastpos then
n = n + 1
buffer[n] = strsub (str, lastpos, nextpos - 1)
end
if strsub (str, nextpos, nextpos) == "\"" then
lastpos = nextpos + 1
break
else
local escchar = strsub (str, nextpos + 1, nextpos + 1)
local value
if escchar == "u" then
value = tonumber (strsub (str, nextpos + 2, nextpos + 5), 16)
if value then
local value2
if 0xD800 <= value and value <= 0xDBff then
-- we have the high surrogate of UTF-16. Check if there is a
-- low surrogate escaped nearby to combine them.
if strsub (str, nextpos + 6, nextpos + 7) == "\\u" then
value2 = tonumber (strsub (str, nextpos + 8, nextpos + 11), 16)
if value2 and 0xDC00 <= value2 and value2 <= 0xDFFF then
value = (value - 0xD800) * 0x400 + (value2 - 0xDC00) + 0x10000
else
value2 = nil -- in case it was out of range for a low surrogate
end
end
end
value = value and unichar (value)
if value then
if value2 then
lastpos = nextpos + 12
else
lastpos = nextpos + 6
end
end
end
end
if not value then
value = escapechars[escchar] or escchar
lastpos = nextpos + 2
end
n = n + 1
buffer[n] = value
end
end
if n == 1 then
return buffer[1], lastpos
elseif n > 1 then
return concat (buffer), lastpos
else
return "", lastpos
end
end
local scanvalue -- forward declaration
local function scantable (what, closechar, str, startpos, nullval, objectmeta, arraymeta)
local len = strlen (str)
local tbl, n = {}, 0
local pos = startpos + 1
if what == 'object' then
setmetatable (tbl, objectmeta)
else
setmetatable (tbl, arraymeta)
end
while true do
pos = scanwhite (str, pos)
if not pos then return unterminated (str, what, startpos) end
local char = strsub (str, pos, pos)
if char == closechar then
return tbl, pos + 1
end
local val1, err
val1, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
if err then return nil, pos, err end
pos = scanwhite (str, pos)
if not pos then return unterminated (str, what, startpos) end
char = strsub (str, pos, pos)
if char == ":" then
if val1 == nil then
return nil, pos, "cannot use nil as table index (at " .. loc (str, pos) .. ")"
end
pos = scanwhite (str, pos + 1)
if not pos then return unterminated (str, what, startpos) end
local val2
val2, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
if err then return nil, pos, err end
tbl[val1] = val2
pos = scanwhite (str, pos)
if not pos then return unterminated (str, what, startpos) end
char = strsub (str, pos, pos)
else
n = n + 1
tbl[n] = val1
end
if char == "," then
pos = pos + 1
end
end
end
scanvalue = function (str, pos, nullval, objectmeta, arraymeta)
pos = pos or 1
pos = scanwhite (str, pos)
if not pos then
return nil, strlen (str) + 1, "no valid JSON value (reached the end)"
end
local char = strsub (str, pos, pos)
if char == "{" then
return scantable ('object', "}", str, pos, nullval, objectmeta, arraymeta)
elseif char == "[" then
return scantable ('array', "]", str, pos, nullval, objectmeta, arraymeta)
elseif char == "\"" then
return scanstring (str, pos)
else
local pstart, pend = strfind (str, "^%-?[%d%.]+[eE]?[%+%-]?%d*", pos)
if pstart then
local number = str2num (strsub (str, pstart, pend))
if number then
return number, pend + 1
end
end
pstart, pend = strfind (str, "^%a%w*", pos)
if pstart then
local name = strsub (str, pstart, pend)
if name == "true" then
return true, pend + 1
elseif name == "false" then
return false, pend + 1
elseif name == "null" then
return nullval, pend + 1
end
end
return nil, pos, "no valid JSON value at " .. loc (str, pos)
end
end
local function optionalmetatables(...)
if select("#", ...) > 0 then
return ...
else
return {__jsontype = 'object'}, {__jsontype = 'array'}
end
end
function json.decode (str, pos, nullval, ...)
local objectmeta, arraymeta = optionalmetatables(...)
return scanvalue (str, pos, nullval, objectmeta, arraymeta)
end
function json.use_lpeg ()
local g = require ("lpeg")
if g.version() == "0.11" then
error "due to a bug in LPeg 0.11, it cannot be used for JSON matching"
end
local pegmatch = g.match
local P, S, R = g.P, g.S, g.R
local function ErrorCall (str, pos, msg, state)
if not state.msg then
state.msg = msg .. " at " .. loc (str, pos)
state.pos = pos
end
return false
end
local function Err (msg)
return g.Cmt (g.Cc (msg) * g.Carg (2), ErrorCall)
end
local SingleLineComment = P"//" * (1 - S"\n\r")^0
local MultiLineComment = P"/*" * (1 - P"*/")^0 * P"*/"
local Space = (S" \n\r\t" + P"\239\187\191" + SingleLineComment + MultiLineComment)^0
local PlainChar = 1 - S"\"\\\n\r"
local EscapeSequence = (P"\\" * g.C (S"\"\\/bfnrt" + Err "unsupported escape sequence")) / escapechars
local HexDigit = R("09", "af", "AF")
local function UTF16Surrogate (match, pos, high, low)
high, low = tonumber (high, 16), tonumber (low, 16)
if 0xD800 <= high and high <= 0xDBff and 0xDC00 <= low and low <= 0xDFFF then
return true, unichar ((high - 0xD800) * 0x400 + (low - 0xDC00) + 0x10000)
else
return false
end
end
local function UTF16BMP (hex)
return unichar (tonumber (hex, 16))
end
local U16Sequence = (P"\\u" * g.C (HexDigit * HexDigit * HexDigit * HexDigit))
local UnicodeEscape = g.Cmt (U16Sequence * U16Sequence, UTF16Surrogate) + U16Sequence/UTF16BMP
local Char = UnicodeEscape + EscapeSequence + PlainChar
local String = P"\"" * g.Cs (Char ^ 0) * (P"\"" + Err "unterminated string")
local Integer = P"-"^(-1) * (P"0" + (R"19" * R"09"^0))
local Fractal = P"." * R"09"^0
local Exponent = (S"eE") * (S"+-")^(-1) * R"09"^1
local Number = (Integer * Fractal^(-1) * Exponent^(-1))/str2num
local Constant = P"true" * g.Cc (true) + P"false" * g.Cc (false) + P"null" * g.Carg (1)
local SimpleValue = Number + String + Constant
local ArrayContent, ObjectContent
-- The functions parsearray and parseobject parse only a single value/pair
-- at a time and store them directly to avoid hitting the LPeg limits.
local function parsearray (str, pos, nullval, state)
local obj, cont
local npos
local t, nt = {}, 0
repeat
obj, cont, npos = pegmatch (ArrayContent, str, pos, nullval, state)
if not npos then break end
pos = npos
nt = nt + 1
t[nt] = obj
until cont == 'last'
return pos, setmetatable (t, state.arraymeta)
end
local function parseobject (str, pos, nullval, state)
local obj, key, cont
local npos
local t = {}
repeat
key, obj, cont, npos = pegmatch (ObjectContent, str, pos, nullval, state)
if not npos then break end
pos = npos
t[key] = obj
until cont == 'last'
return pos, setmetatable (t, state.objectmeta)
end
local Array = P"[" * g.Cmt (g.Carg(1) * g.Carg(2), parsearray) * Space * (P"]" + Err "']' expected")
local Object = P"{" * g.Cmt (g.Carg(1) * g.Carg(2), parseobject) * Space * (P"}" + Err "'}' expected")
local Value = Space * (Array + Object + SimpleValue)
local ExpectedValue = Value + Space * Err "value expected"
ArrayContent = Value * Space * (P"," * g.Cc'cont' + g.Cc'last') * g.Cp()
local Pair = g.Cg (Space * String * Space * (P":" + Err "colon expected") * ExpectedValue)
ObjectContent = Pair * Space * (P"," * g.Cc'cont' + g.Cc'last') * g.Cp()
local DecodeValue = ExpectedValue * g.Cp ()
function json.decode (str, pos, nullval, ...)
local state = {}
state.objectmeta, state.arraymeta = optionalmetatables(...)
local obj, retpos = pegmatch (DecodeValue, str, pos, nullval, state)
if state.msg then
return nil, state.pos, state.msg
else
return obj, retpos
end
end
-- use this function only once:
json.use_lpeg = function () return json end
json.using_lpeg = true
return json -- so you can get the module using json = require "dkjson".use_lpeg()
end
if always_try_using_lpeg then
pcall (json.use_lpeg)
end
return json

BIN
imgui.so Executable file

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3011
lib/fennel.lua Normal file

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225
lib/fennelview.lua Normal file
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local function view_quote(str)
return ("\"" .. str:gsub("\"", "\\\"") .. "\"")
end
local short_control_char_escapes = {["\11"] = "\\v", ["\12"] = "\\f", ["\13"] = "\\r", ["\7"] = "\\a", ["\8"] = "\\b", ["\9"] = "\\t", ["\n"] = "\\n"}
local long_control_char_escapes = nil
do
local long = {}
for i = 0, 31 do
local ch = string.char(i)
if not short_control_char_escapes[ch] then
short_control_char_escapes[ch] = ("\\" .. i)
long[ch] = ("\\%03d"):format(i)
end
end
long_control_char_escapes = long
end
local function escape(str)
return str:gsub("\\", "\\\\"):gsub("(%c)%f[0-9]", long_control_char_escapes):gsub("%c", short_control_char_escapes)
end
local function sequence_key_3f(k, len)
return ((type(k) == "number") and (1 <= k) and (k <= len) and (math.floor(k) == k))
end
local type_order = {["function"] = 5, boolean = 2, number = 1, string = 3, table = 4, thread = 7, userdata = 6}
local function sort_keys(a, b)
local ta = type(a)
local tb = type(b)
if ((ta == tb) and (ta ~= "boolean") and ((ta == "string") or (ta == "number"))) then
return (a < b)
else
local dta = type_order[a]
local dtb = type_order[b]
if (dta and dtb) then
return (dta < dtb)
elseif dta then
return true
elseif dtb then
return false
elseif "else" then
return (ta < tb)
end
end
end
local function get_sequence_length(t)
local len = 1
for i in ipairs(t) do
len = i
end
return len
end
local function get_nonsequential_keys(t)
local keys = {}
local sequence_length = get_sequence_length(t)
for k in pairs(t) do
if not sequence_key_3f(k, sequence_length) then
table.insert(keys, k)
end
end
table.sort(keys, sort_keys)
return keys, sequence_length
end
local function count_table_appearances(t, appearances)
if (type(t) == "table") then
if not appearances[t] then
appearances[t] = 1
for k, v in pairs(t) do
count_table_appearances(k, appearances)
count_table_appearances(v, appearances)
end
end
else
if (t and (t == t)) then
appearances[t] = ((appearances[t] or 0) + 1)
end
end
return appearances
end
local put_value = nil
local function puts(self, ...)
for _, v in ipairs({...}) do
table.insert(self.buffer, v)
end
return nil
end
local function tabify(self)
return puts(self, "\n", (self.indent):rep(self.level))
end
local function already_visited_3f(self, v)
return (self.ids[v] ~= nil)
end
local function get_id(self, v)
local id = self.ids[v]
if not id then
local tv = type(v)
id = ((self["max-ids"][tv] or 0) + 1)
self["max-ids"][tv] = id
self.ids[v] = id
end
return tostring(id)
end
local function put_sequential_table(self, t, len)
puts(self, "[")
self.level = (self.level + 1)
for i = 1, len do
local _0_ = (1 + len)
if ((1 < i) and (i < _0_)) then
puts(self, " ")
end
put_value(self, t[i])
end
self.level = (self.level - 1)
return puts(self, "]")
end
local function put_key(self, k)
if ((type(k) == "string") and k:find("^[-%w?\\^_!$%&*+./@:|<=>]+$")) then
return puts(self, ":", k)
else
return put_value(self, k)
end
end
local function put_kv_table(self, t, ordered_keys)
puts(self, "{")
self.level = (self.level + 1)
for i, k in ipairs(ordered_keys) do
if (self["table-edges"] or (i ~= 1)) then
tabify(self)
end
put_key(self, k)
puts(self, " ")
put_value(self, t[k])
end
for i, v in ipairs(t) do
tabify(self)
put_key(self, i)
puts(self, " ")
put_value(self, v)
end
self.level = (self.level - 1)
if self["table-edges"] then
tabify(self)
end
return puts(self, "}")
end
local function put_table(self, t)
local metamethod = nil
local function _1_()
local _0_0 = t
if _0_0 then
local _2_0 = getmetatable(_0_0)
if _2_0 then
return _2_0.__fennelview
else
return _2_0
end
else
return _0_0
end
end
metamethod = (self["metamethod?"] and _1_())
if (already_visited_3f(self, t) and self["detect-cycles?"]) then
return puts(self, "#<table ", get_id(self, t), ">")
elseif (self.level >= self.depth) then
return puts(self, "{...}")
elseif metamethod then
return puts(self, metamethod(t, self.fennelview))
elseif "else" then
local non_seq_keys, len = get_nonsequential_keys(t)
local id = get_id(self, t)
if ((1 < (self.appearances[t] or 0)) and self["detect-cycles?"]) then
return puts(self, "#<table", id, ">")
elseif ((#non_seq_keys == 0) and (#t == 0)) then
local function _2_()
if self["empty-as-square"] then
return "[]"
else
return "{}"
end
end
return puts(self, _2_())
elseif (#non_seq_keys == 0) then
return put_sequential_table(self, t, len)
elseif "else" then
return put_kv_table(self, t, non_seq_keys)
end
end
end
local function _0_(self, v)
local tv = type(v)
if (tv == "string") then
return puts(self, view_quote(escape(v)))
elseif ((tv == "number") or (tv == "boolean") or (tv == "nil")) then
return puts(self, tostring(v))
elseif (tv == "table") then
return put_table(self, v)
elseif "else" then
return puts(self, "#<", tostring(v), ">")
end
end
put_value = _0_
local function one_line(str)
local ret = str:gsub("\n", " "):gsub("%[ ", "["):gsub(" %]", "]"):gsub("%{ ", "{"):gsub(" %}", "}"):gsub("%( ", "("):gsub(" %)", ")")
return ret
end
local function fennelview(x, options)
local options0 = (options or {})
local inspector = nil
local function _1_(_241)
return fennelview(_241, options0)
end
local function _2_()
if options0["one-line"] then
return ""
else
return " "
end
end
inspector = {["detect-cycles?"] = not (false == options0["detect-cycles?"]), ["empty-as-square"] = options0["empty-as-square"], ["max-ids"] = {}, ["metamethod?"] = not (false == options0["metamethod?"]), ["table-edges"] = (options0["table-edges"] ~= false), appearances = count_table_appearances(x, {}), buffer = {}, depth = (options0.depth or 128), fennelview = _1_, ids = {}, indent = (options0.indent or _2_()), level = 0}
put_value(inspector, x)
local str = table.concat(inspector.buffer)
if options0["one-line"] then
return one_line(str)
else
return str
end
end
return fennelview

46
lib/stdio.fnl Normal file
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(require "love.event")
(local view (require "lib.fennelview"))
;; This module exists in order to expose stdio over a channel so that it
;; can be used in a non-blocking way from another thread.
(local (event channel) ...)
(when channel
(let [prompt (fn [] (io.write "> ") (io.flush) (io.read "*l"))]
((fn looper [input]
(when input
;; This is consumed by love.handlers[event]
(love.event.push event input)
(let [output (: channel :demand)]
;; There is probably a more efficient way of determining an error
(if (and (. output 2) (= "Error:" (. output 2)))
(print (view output))
(each [_ ret (ipairs output)]
(print ret))))
(io.flush)
(looper (prompt)))) (prompt))))
{:start (fn start-repl []
(let [code (love.filesystem.read "lib/stdio.fnl")
luac (if code
(love.filesystem.newFileData
(fennel.compileString code) "io")
(love.filesystem.read "lib/stdio.lua"))
thread (love.thread.newThread luac)
io-channel (love.thread.newChannel)
coro (coroutine.create fennel.repl)
out (fn [val]
(: io-channel :push val))
options {:readChunk coroutine.yield
:onValues out
:onError (fn [kind ...] (out [kind "Error:" ...]))
:pp view
:moduleName "lib.fennel"}]
;; this thread will send "eval" events for us to consume:
(coroutine.resume coro options)
(: thread :start "eval" io-channel)
(set love.handlers.eval
(fn [input]
(coroutine.resume coro (.. input "\n"))))))}

1
lite.lua Symbolic link
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../lite/main.lua

109
machine.fnl Normal file
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(local command (require "core.command"))
(local spawn (require "spawn"))
(local socket (require "socket"))
(local json (require "dkjson"))
(local gsplus-path "/home/jeremy/src/gsplus/result/bin/GSplus")
(local debug-port 8769)
(local reg-write-format {
:ip "k%06X "
:a "a%04X "
:x "x%04X "
:y "y%04X "
:s "s%04X "
:d "d%04X "
:b "b%02X "
:psr "p%06X "
})
(local machine
{:boot
(fn [self]
(when (not self.pid)
(set self.pid (spawn [:nixGL gsplus-path :-debugport (tostring debug-port)]))))
:die
(fn [self]
(when self.pid
(spawn [:kill (tostring self.pid)])
(set self.pid nil)
(when self.socket
(self.socket:close)
(set self.socket nil))))
:connect
(fn [self]
(when (not self.socket)
(set self.socket (socket.connect :localhost debug-port))
(if self.socket
(self.socket:settimeout 1)
(love.timer.sleep 0.25))))
:disconnect
(fn [self]
(when self.socket
(self.socket:close)
(set self.socket nil)))
:cmd (fn [self cmd] (self.socket:send (.. cmd "\n")))
:response
(fn [self]
(var bytes "")
(var done false)
(while (not done)
(local (line err) (self.socket:receive))
(set done (or (= line "") (= line nil)))
(when line (set bytes (.. bytes line))))
(json.decode bytes))
:cmd-response (fn [self cmd] (self:cmd cmd) (self:response))
:hello (fn [self] (self:cmd-response "1"))
:continue (fn [self] (self:cmd-response "3"))
:step (fn [self] (self:cmd-response "2"))
:getreg (fn [self] (self:cmd-response "4"))
:set-bp (fn [self addr] (self:cmd-response (.. "8" (string.format "%06X" addr))))
:delete-bp (fn [self addr] (self:cmd-response (.. "9" (string.format "%06X" addr))))
:get-bp (fn [self] (self:cmd-response "A"))
:write
(fn [self addr bytes]
(self:cmd-response (.. "7" (string.format "%06X" addr) (bytes:tohex))))
:setreg
(fn [self regvals]
(var bytes "5")
(each [reg val (pairs regvals)]
(set bytes (.. bytes (string.format (. reg-write-format reg) val))))
(self:cmd-response bytes))
:stop-at
(fn [self addr k]
(local fulladdr (bit.bor addr (bit.lshift (or k 0) 16)))
(self:set-bp fulladdr)
(var retries 5)
(while (> retries 0)
(local reg (. (self:getreg) 1 :data))
(pp reg.PC.fromhex)
(local pc (reg.PC:fromhex))
(pp)
(local curr-k (reg.K:fromhex))
(print (curr-k:tohex) (pc:tohex))
(if (and (= pc addr) (= curr-k (or k 0)))
(set retries 0)
(do (love.timer.sleep 1) (set retries (- retries 1)))))
(self:delete-bp fulladdr))
})
(command.add #(not machine.pid) {
"gsplus:launch-gsplus" #(machine:boot)
"gsplus:boot" (fn []
(machine:boot)
(while (not machine.socket) (pp (machine:connect)))
(machine:hello)
)
})
(command.add (fn [] machine.socket) {
"gsplus:disconnect" #(machine:disconnect)
"gsplus:hello" #(machine:hello)
"gsplus:dump-cpu-state" #(pp (machine:getreg))
"gsplus:step" #(pp (machine:step))
"gsplus:continue" #(pp (machine:continue))
})
(command.add #(not machine.socket) {
"gsplus:connect" #(machine:connect)
})
machine

21
main.lua Normal file
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-- bootstrap the compiler
fennel = require("lib.fennel")
table.insert(package.loaders, fennel.make_searcher({correlate=true}))
fv = require("lib.fennelview")
pp = function(x) print(fv(x)) end
function reload(modname)
package.loaded[modname] = nil
return require(modname)
end
_coroutine_resume = coroutine.resume
function coroutine.resume(...)
local state,result = _coroutine_resume(...)
if not state then
error( tostring(result), 2 ) -- Output error message
end
return state,result
end
require("wrap")

41
spawn.lua Normal file
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-- adapted from https://gist.github.com/iMega/f47f5a2ae1f02d7d5769a008538fd925
local ffi = require 'ffi'
local C = ffi.C
ffi.cdef([[
typedef int32_t pid_t;
pid_t fork(void);
int open(const char *pathname, int flags, int mode);
int close(int fd);
int dup2(int oldfd, int newfd);
int execvp(const char *file, char *const argv[]);
]])
local bor = bit.bor
local ffi_cast = ffi.cast
local k_char_p_arr_t = ffi.typeof('const char * [?]')
local char_p_k_p_t = ffi.typeof('char * const *')
local function spawn(args)
if not args or #args == 0 then error("couldn't tokenize cmd_line") end
local pid = C.fork()
if pid < 0 then
error("fork failed " .. ffi.errno())
elseif pid == 0 then -- child process
local argv = k_char_p_arr_t(#args + 1) -- automatically NULL terminated
for i = 1, #args do
argv[i-1] = args[i] -- args is 1-based Lua table, argv is 0-based C array
end
local res = C.execvp(args[1], ffi_cast(char_p_k_p_t, argv))
if res == -1 then error("execvp failed with " .. ffi.errno()) end
-- HERE SHOULD BE UNREACHABLE!!
else
return pid
end
end
return spawn

163
stream.fnl Normal file
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(var make-stream nil)
(fn stream [table]
(make-stream
{:table (or table [])
:i 0
:n (length table)
:step 1
:next
(fn [self]
(when (~= self.i self.n)
(set self.i (+ self.i self.step))
true))
:curr (fn [self] (. self.table self.i))
:reverse
(fn [self]
(local prev-i self.i)
(set self.i (+ self.n self.step))
(set self.n (+ prev-i self.step))
(set self.step (* self.step -1))
self)}))
(fn kvstream [table]
(make-stream
{:table (or table {})
:curr-key nil
:curr-val :start
:curr (fn [self] (values self.curr-key self.curr-val))
:keys (fn [self] (self:map (fn [k v] k)))
:values (fn [self] (self:map (fn [k v] v)))
:next
(fn [self]
(when self.curr-val
(set (self.curr-key self.curr-val) (next self.table self.curr-key)))
(~= self.curr-key nil))}))
(fn one [...]
(make-stream
{:vals [...]
:advanced false
:curr (fn [self] (unpack self.vals))
:next
(fn [self]
(if self.advanced
false
(do
(set self.advanced true)
true)))}))
(fn iter [self]
(values
(fn [self _]
(when (self:next)
(self:curr)))
self
nil))
(fn first [self]
(if (self:next) (self:curr) nil))
(fn map [stream f]
(make-stream
{: stream : f
:curr (fn [self] (self.f (self.stream:curr)))
:next (fn [self] (self.stream:next))
:reverse
(fn [self]
(set self.stream (self.stream:reverse))
self)}))
(fn filter [stream f]
(make-stream
{: stream : f :curr-val nil
:curr (fn [self] self.curr-val)
:next
(fn [self]
(set self.curr-val nil)
(var has-more (self.stream:next))
(while has-more
(let [curr (self.stream:curr)
include? (self.f curr)]
(when include?
(set self.curr-val curr))
(set has-more (if include? false (self.stream:next)))))
self.curr-val)}))
(fn reduce [stream f init]
(var val init)
(each [v (stream:iter)]
(set val (f val v)))
val)
(fn flatten [stream]
(make-stream
{: stream
:curr-stream nil
:curr (fn [self] (self.curr-stream:curr))
:next
(fn [self]
(var reached-next
(if self.curr-stream (self.curr-stream:next) false))
(while (not reached-next)
(set self.curr-stream
(if (self.stream:next) (self.stream:curr) nil))
(set reached-next
(if self.curr-stream (self.curr-stream:next) true)))
(~= self.curr-stream nil))}))
(fn concat [s ...]
(: (stream [s ...]) :flatten))
(fn skip [stream n]
(make-stream
{: stream
: n
:curr (fn [self] (self.stream:curr))
:next
(fn [self]
(for [_ 1 self.n]
(self.stream:next))
(set self.n 0)
(self.stream:next))}))
(fn take [stream n]
(make-stream
{: stream
: next
:curr (fn [self] (self.stream:curr))
:next
(fn [self]
(if (> self.n 0)
(do
(set self.n (- self.n 1))
(self.stream:next))
false))}))
(fn tolist [stream]
(let [l []]
(each [v (stream:iter)]
(table.insert l v))
l))
(fn tomap [stream]
(let [m {}]
(each [k v (stream:iter)]
(tset m k v))
m))
(set make-stream
(fn [stream]
(set stream.iter iter)
(set stream.map map)
(set stream.filter filter)
(set stream.first first)
(set stream.reduce reduce)
(set stream.flatten flatten)
(set stream.concat concat)
(set stream.skip skip)
(set stream.take take)
(set stream.tolist tolist)
(set stream.tomap tomap)
stream))
{: stream : kvstream : one}

14
test.fnl Normal file
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@ -0,0 +1,14 @@
(local program (require "asm"))
(local {: stream : kvstream : one} (require "stream"))
(local prg (program))
(prg:block :print-chars-forever 0x0c00
:start
[:dex]
[:txa]
[:jsr :0xfded]
[:jmp :start])
(prg:assemble)
(set prg.start-symbol :print-chars-forever)
prg

9
util.fnl Normal file
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@ -0,0 +1,9 @@
(fn table.clone [tbl]
(let [newtbl {}]
(each [k v (pairs tbl)]
(tset newtbl k v))
newtbl))
(fn string.fromhex [str]
(str:gsub ".." (fn [cc] (string.char (tonumber cc 16)))))
(fn string.tohex [str]
(str:gsub "." (fn [c] (string.format "%02X" (string.byte c)))))

47
wrap.fnl Normal file
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@ -0,0 +1,47 @@
(require "lite")
(require "util")
(local imgui (require "imgui"))
(local machine (require "machine"))
(fn love.load []
; (repl.start)
)
(fn love.update [dt]
(imgui.NewFrame))
(fn love.draw []
(when machine.socket
(when (imgui.Button "Stop on keypress")
(machine:stop-at 0xfd1b))
(when (imgui.Button "Upload")
(local prg (reload "test"))
(each [_ block (pairs prg.symbols)]
(pp (machine:write block.addr block.bytes)))
(pp (machine:setreg {:ip (. prg.symbols prg.start-symbol :addr)}))
(pp (machine:continue))))
(imgui.Render))
(fn love.quit []
(imgui.ShutDown))
(fn love.textinput [t]
(imgui.TextInput t))
(fn love.keypressed [key]
(imgui.KeyPressed key))
(fn love.keyreleased [key]
(imgui.KeyReleased key))
(fn love.mousemoved [x y]
(imgui.MouseMoved x y))
(fn love.mousepressed [x y button]
(imgui.MousePressed button))
(fn love.mousereleased [x y button]
(imgui.MouseReleased button))
(fn love.wheelmoved [x y]
(imgui.WheelMoved y))