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Added short lambda function syntax \args(expr).

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This commit is contained in:
g012 2017-09-11 22:52:16 +02:00
parent ec93899042
commit a40ab23939
5 changed files with 136 additions and 18 deletions
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5
6502.lua
View File

@ -4,6 +4,10 @@ local symbols={} M.symbols=symbols
local locations={} M.locations=locations
local stats={} M.stats=stats
M.__index = M
symbols.__index = symbols
setmetatable(M, symbols)
local section_current -- cache of last location's last section, for faster access
M.link = function()
@ -191,7 +195,6 @@ M.section = function(t)
size = size + #instruction.data
end
self.size = size
-- set start and finish fields of constraints
for _,constraint in ipairs(self.constraints) do
constraint.start = instructions[constraint.from].offset
constraint.finish = instructions[constraint.to].offset

39
asm.l65
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@ -1,3 +1,6 @@
local g = function(a) return a*3 end
local f = \a(a*3)
dofile "vcs.lua"
TIM_OVERSCAN = 50 -- TIM64T, 3200 cycles = ~ 42 scanlines
@ -17,8 +20,33 @@ x:f()
lda = 5 if lda < 6 then print('yep') end
#pragma syntax6502 on
--@@data samepage byte(1, 2) crosspage byte(3, 4)
--[[
local function ptr_table(label, ...)
local vals = {...}
section(label .. "_lo")
for _,v in ipairs(vals) do byte_lo(v) end
section(label .. "_hi")
for _,v in ipairs(vals) do byte_hi(v) end
end
]]
--@@message byte(4) "test" byte(0)
@@data
crosspage
byte(1, 2) byte(3, 4)
end
word(0xf080) byte(16, 3, 4, 5, 6,
24, 32)
--[[
word(message)
byte_lo(message) byte_hi(message)
--]]
byte(\(message&0xff), \(message>>8))
--[[
ptr_table("ptrs", message, data, 0)
--]]
--section{ "toto", align = 256, offset = 16 }
--section{ "toto", org = 0xf100 }
--section "waitForIntim"
@ -29,6 +57,15 @@ lda = 5 if lda < 6 then print('yep') end
ldx #0xf0
ldx #0b1101
ldy #0xAB - 16 + 0b11011 & 3 | 6 ~ 0xf >> ~3 << 1 // 5
--[[
lda data
lda data,5
lda data,function(final_address) return final_address & 3 end
lda data,\a(a&3)
lda (INTIM,5,x)
lda (INTIM,5),y
-- parse value list, si #list > 1 && list[#list-1] == 'x' ...
]]
samepage
lda #0xac

60
asm.lua
View File

@ -1,3 +1,6 @@
local g = function(a) return a*3 end
local f = function(a) return a*3 end
dofile "vcs.lua"
TIM_OVERSCAN = 50 -- TIM64T, 3200 cycles = ~ 42 scanlines
@ -17,28 +20,63 @@ x:f()
lda = 5 if lda < 6 then print('yep') end
;
--@@data samepage byte(1, 2) crosspage byte(3, 4)
--[[
local function ptr_table(label, ...)
local vals = {...}
section(label .. "_lo")
for _,v in ipairs(vals) do byte_lo(v) end
section(label .. "_hi")
for _,v in ipairs(vals) do byte_hi(v) end
end
]]
--@@message byte(4) "test" byte(0)
section("data")
do crosspage()
byte(1, 2) byte(3, 4) endpage()
end
word(0xf080) byte(16, 3, 4, 5, 6,
24, 32)
--[[
word(message)
byte_lo(message) byte_hi(message)
--]]
byte(function() return message&0xff end, function() return message>>8 end)
--[[
ptr_table("ptrs", message, data, 0)
--]]
--section{ "toto", align = 256, offset = 16 }
--section{ "toto", org = 0xf100 }
section "waitForIntim" --alt short syntax when no other option: @@waitForIntim ?
--section "waitForIntim"
section("waitForIntim") --alt short syntax when no other option
-- n_{ a=INTIM } ?
--lda(INTIM) -- or a=INTIM
--bne "waitForIntim"
ldx_immediate(0xf0)
ldx_immediate(13)
ldy_immediate(0xAB - 16 + 27 & 3 | 6 ~ 0xf >> ~3 << 1 // 5)
--[[
lda data
lda data,5
lda data,function(final_address) return final_address & 3 end
lda data,\a(a&3)
lda (INTIM,5,x)
lda (INTIM,5),y
-- parse value list, si #list > 1 && list[#list-1] == 'x' ...
]]
do samepage()
lda_immediate(0xac)
lda_immediate(INTIM)
lda_absolute( 0xbeef)
lda_absolute( INTIM)
lda_absolute_nozp( INTIM)
lda_absolute_x( INTIM)
lda_absolute_x( INTIM)
lda_indirect_x(INTIM)
lda_indirect_y(INTIM) endpage()
lda_immediate(0xac)
lda_immediate(INTIM)
lda_absolute( 0xbeef)
lda_absolute( INTIM)
lda_absolute_nozp( INTIM)
lda_absolute_x( INTIM)
lda_absolute_x( INTIM)
lda_indirect_x(INTIM)
lda_indirect_y(INTIM) endpage()
end
asl_implied()

44
l65.lua
View File

@ -544,6 +544,9 @@ local function LexLua(src)
toEmit = {Type = 'Symbol', Data = '@'}
end
elseif syntax6502_on and consume('\\') then
toEmit = {Type = 'Symbol', Data = '\\'}
elseif Symbols[c] then
get()
toEmit = {Type = 'Symbol', Data = c}
@ -813,6 +816,7 @@ local function ParseLua(src)
nodePrimExp.Tokens = tokenList
--
return true, nodePrimExp
else
return false, GenerateError("primary expression expected")
end
@ -1038,6 +1042,45 @@ local function ParseLua(src)
func.IsLocal = true
return true, func
elseif tok:ConsumeSymbol('\\', tokenList) then -- short lambdas \params(expr)
local funcScope = CreateScope(scope)
local argList = {}
if not tok:ConsumeSymbol('(', tokenList) then while true do
if not tok:Is('Ident') then return false, GenerateError("identifier expected") end
argList[#argList+1] = funcScope:CreateLocal(tok:Get(tokenList).Data)
if tok:ConsumeSymbol('(', tokenList) then break end
if not tok:ConsumeSymbol(',', tokenList) then return false, GenerateError("'(' expected") end
end end
--local st, body = ParseStatementList(funcScope)
local st, body = ParseExpr(funcScope)
if not st then return false, body end
if not tok:ConsumeSymbol(')', tokenList) then return false, GenerateError("')' expected after lambda body") end
local last_tok = body.Tokens[1]
local last_char,last_line = last_tok.Char,last_tok.Line
local space = { Char=last_char, Line=last_line, Data=' ', Type='Whitespace' }
local ret = { AstType='ReturnStatement', Arguments={body}, TrailingWhite=true, Tokens={
{ Char=last_char, Line=last_line, Print=function() return '<Keyword return >' end, LeadingWhite={space}, Type='Keyword', Data='return' }
}}
local statList = { AstType='Statlist', Scope=CreateScope(funcScope), Tokens={}, Body={ret} }
local tok_first = tokenList[1]
tok_first.Type = 'Keyword'
tok_first.Data = 'function'
tok_first.Print=function() return '<Keyword function >' end
local ntokl = {}
local paren_ix = 2 + math.max(0, #argList*2-1)
table.insert(ntokl, tokenList[1])
table.insert(ntokl, tokenList[paren_ix])
for i=2,paren_ix-1 do table.insert(ntokl, tokenList[i]) end
table.insert(ntokl, tokenList[#tokenList])
table.insert(ntokl, { Char=last_char, Line=last_line, Type='Keyword', Data='end', Print=function() return '<Keyword end >' end, LeadingWhite={space} })
local func = { AstType='Function', Scope=funcScope, Arguments=argList, Body=statList, VarArg=false, Tokens=ntokl, isLocal=true }
return true, func
else
return ParseSuffixedExpr(scope)
end
@ -1984,6 +2027,7 @@ local function Format65(ast)
elseif statement.AstType == 'ReturnStatement' then
appendNextToken( "return" )
if statement.TrailingWhite then out:appendStr(' ') end
for i = 1, #statement.Arguments do
formatExpr(statement.Arguments[i])
appendComma( i ~= #statement.Arguments )

6
vcs.lua
View File

@ -1,6 +1,5 @@
-- set cpu to 6502
cpu = require "6502"
cpu.__index = cpu
setmetatable(_ENV, cpu)
vcs = {
@ -82,8 +81,5 @@ vcs = {
}
do
local symbols = cpu.symbols
for k,v in pairs(vcs) do
_ENV[k] = v
symbols[k] = v
end
for k,v in pairs(vcs) do symbols[k] = v end
end