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Copy pathenv.lua
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1017 lines (899 loc) · 29.6 KB
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_OPTS.tp_word = assert(tonumber(_OPTS.tp_word),
'missing `--tp-word´ parameter')
_ENV = {
clss = {}, -- { [1]=cls, ... [cls]=0 }
clss_ifc = {},
clss_cls = {},
calls = {}, -- { _printf=true, _myf=true, ... }
-- f=fields, e=events
ifcs = {
flds = {}, -- {[1]='A',[2]='B',A=0,B=1,...}
evts = {}, -- ...
funs = {}, -- ...
},
exts = {
--[1]=ext1, [ext1.id]=ext1.
--[N-1]={_ASYNC}, [id]={},
--[N]={_WCLOCK}, [id]={},
},
-- TODO: move to _TP
-- "len" is used to sort fields on generated "structs"
c = {
void = 0,
word = _OPTS.tp_word,
pointer = _OPTS.tp_word,
char = 1,
int = _OPTS.tp_word,
uint = _OPTS.tp_word,
u8=1, u16=2, u32=4, u64=8,
s8=1, s16=2, s32=4, s64=8,
float = _OPTS.tp_word,
f32=4, f64=8,
tceu_ncls = true, -- env.lua
tceu_nlbl = true, -- labels.lua
},
dets = {},
max_evt = 0, -- max # of internal events (exts+1 start from it)
}
for k, v in pairs(_ENV.c) do
if v == true then
_ENV.c[k] = { tag='type', id=k, len=nil }
else
_ENV.c[k] = { tag='type', id=k, len=v }
end
end
function CLS ()
return _AST.iter'Dcl_cls'()
end
function var2ifc (var)
local tp
if var.pre == 'var' then
tp = var.tp
elseif var.pre == 'event' then
tp = var.evt.ins
else
tp = var.fun.ins.tp..'$'..var.fun.out
end
return table.concat({
var.id,
tp,
tostring(var.pre),
tostring(var.arr),
}, '$')
end
function _ENV.ifc_vs_cls (ifc, cls)
-- check if they have been checked
ifc.matches = ifc.matches or {}
cls.matches = cls.matches or {}
if ifc.matches[cls] ~= nil then
return ifc.matches[cls]
end
-- check if they match
for _, v1 in ipairs(ifc.blk_ifc.vars) do
v2 = cls.blk_ifc.vars[v1.id]
if v2 then
v2.ifc_id = v2.ifc_id or var2ifc(v2)
end
if (not v2) or (v1.ifc_id~=v2.ifc_id) then
ifc.matches[cls] = false
return false
end
end
-- yes, they match
ifc.matches[cls] = true
cls.matches[ifc] = true
return true
end
-- unique numbers for vars and events
local _N = 0
local _E = 1 -- 0=NONE
function newtype (tp)
local raw = _TP.noptr(tp)
if string.sub(raw,1,1)=='_' and (not _ENV.c[raw]) then
_ENV.c[raw] = { tag='type', id=raw, len=nil, mod=nil }
end
end
function newvar (me, imp, blk, pre, tp, arr, id)
for stmt in _AST.iter() do
if _AST.par(me, 'Thread') then
break -- search until Thread
elseif stmt.tag == 'Block' then
for _, var in ipairs(stmt.vars) do
--ASR(var.id~=id or var.blk~=blk, me,
--'variable/event "'..var.id..
--'" is already declared at --line '..var.ln)
if (var.id == id) and (not imp) then
local fun = pre=='function' and stmt==CLS().blk_ifc -- dcl
and blk==CLS().blk_ifc -- body
WRN(fun, me,
'declaration of "'..id..'" hides the one at line '
..var.ln[2])
--if (blk==CLS().blk_ifc or blk==CLS().blk_body) then
--ASR(false, me, 'cannot hide at top-level block' )
end
end
end
end
newtype(tp)
local tp_noptr = _TP.noptr(tp)
local c = _ENV.c[tp_noptr]
ASR(_ENV.clss[tp_noptr] or c,
me, 'undeclared type `'..tp_noptr..'´')
ASR(not _ENV.clss_ifc[tp],
me, 'cannot instantiate an interface')
ASR(_TP.deref(tp) or (not c) or (tp=='void' and pre~='var') or c.len~=0,
me, 'cannot instantiate type "'..tp..'"')
--ASR((not arr) or arr>0, me, 'invalid array dimension')
tp = (arr and tp..'*') or tp
local tp_ = _TP.deref(tp)
local cls = _ENV.clss[tp] or (arr and tp_ and _ENV.clss[tp_])
if cls then
ASR(cls ~=_AST.iter'Dcl_cls'(),
me, 'invalid declaration')
end
-- Class definitions take priority over interface definitions:
-- * consts
-- * delay => nodelay methods
if blk.vars[id] and (blk==CLS().blk_ifc) then
return true, blk.vars[id]
end
local var = {
ln = me.ln,
id = id,
blk = blk,
tp = tp,
cls = cls,
pre = pre,
inTop = (blk==CLS().blk_ifc) or (blk==CLS().blk_body),
-- (never "tmp")
isTmp = false,
arr = arr,
n = _N,
}
_N = _N + 1
blk.vars[#blk.vars+1] = var
blk.vars[id] = var -- TODO: last/first/error?
-- TODO: warning in C (hides)
return false, var
end
function newint (me, imp, blk, pre, tp, id)
newtype(tp)
local has, var = newvar(me, imp, blk, pre, 'void', false, id)
if has then
return true, var
end
local evt = {
id = id,
idx = _E,
ins = tp,
pre = pre,
}
var.evt = evt
_E = _E + 1
return false, var
end
function newfun (me, imp, blk, pre, delay, ins, out, id)
delay = not not delay
local old = blk.vars[id]
if old then
ASR(ins.tp==old.fun.ins.tp and out==old.fun.out and
(delay==old.fun.mod.delay or imp),
me, 'function declaration does not match the one at "'..
old.ln[1]..':'..old.ln[2]..'"')
-- Accept delay mismatch for "imp" because class implementation
-- might be "nodelay", e.g.:
-- interface with delay f;
-- class with f;
-- When calling from an interface, call/delay is still required,
-- but from class it is not.
end
local has, var = newvar(me, imp, blk, pre,
'___typeof__(CEU_'..CLS().id..'_'..id..')',
-- TODO: _TP.c eats one '_'
false, id)
if has then
return true, var
end
local fun = {
id = id,
ins = ins,
out = out,
pre = pre,
mod = { delay=delay },
isExt = string.upper(id)==id,
}
var.fun = fun
return false, var
end
function _ENV.getvar (id, blk)
local blk = blk or _AST.iter('Block')()
while blk do
if blk.tag == 'Thread' then
return nil -- thread boundary: stop search
elseif blk.tag == 'Async' then
local vars = unpack(blk)
if not vars[id] then
return nil -- async boundary: stop if not explicitly declared
end
elseif blk.tag == 'Block' then
for i=#blk.vars, 1, -1 do -- n..1 (hidden vars)
local var = blk.vars[i]
if var.id == id then
return var
end
end
end
blk = blk.__par
end
return nil
end
-- identifiers for ID_c / ID_ext (allow to be defined after annotations)
-- variables for Var
function det2id (v)
if type(v) == 'string' then
return v
else
return v.var
end
end
F = {
Root_pre = function (me)
-- TODO: NONE=0
-- TODO: if _PROPS.* then ... end
local evt = {id='_STK', pre='input'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
-- TODO: shared with _INIT?
local evt = {id='_ORG', pre='input'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
local evt = {id='_ORG_PSED', pre='input'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
local evt = {id='_INIT', pre='input'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
local evt = {id='_CLEAR', pre='input'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
local evt = {id='_WCLOCK', pre='input'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
local evt = {id='_ASYNC', pre='input'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
local evt = {id='_THREAD', pre='input'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
if _OPTS.os then
local evt = {id='OS_START', pre='input', ins='void'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
local evt = {id='OS_STOP', pre='input', ins='void'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
local evt = {id='OS_DT', pre='input', ins='int'}
_ENV.exts[#_ENV.exts+1] = evt
_ENV.exts[evt.id] = evt
end
end,
Root = function (me)
_ENV.c.tceu_ncls.len = _TP.n2bytes(#_ENV.clss_cls)
ASR(_ENV.max_evt+#_ENV.exts < 255, me, 'too many events')
-- 0 = NONE
-- matches all ifc vs cls
for _, ifc in ipairs(_ENV.clss_ifc) do
for _, cls in ipairs(_ENV.clss_cls) do
_ENV.ifc_vs_cls(ifc, cls)
end
end
local glb = _ENV.clss.Global
if glb then
ASR(glb.is_ifc and glb.matches[_ENV.clss.Main], me,
'interface "Global" must be implemented by class "Main"')
end
end,
Block_pre = function (me)
me.vars = {}
if me.__par.tag == 'Thread' then
local vars, blk = unpack(me.__par)
if vars then
for i, n in ipairs(vars) do -- create new variables for params
local var = n.var
ASR(not var.arr, vars, 'invalid argument')
local _
_, n.new = newvar(vars, false, blk, 'var', var.tp, nil, var.id)
end
end
end
-- include arguments into function block
local fun = _AST.iter()()
local _, _, inp, out = unpack(fun)
if fun.tag == 'Dcl_fun' then
for i, v in ipairs(inp) do
local hold, tp, id = unpack(v)
if tp ~= 'void' then
local has,var = newvar(me, false, me, 'var', tp, false, id)
assert(not has)
var.isTmp = true -- TODO: var should be a node
var.isFun = true
var.funIdx = i
end
end
end
end,
Dcl_cls_pre = function (me)
local ifc, max, id, blk = unpack(me)
me.is_ifc = ifc
me.max = max
me.id = id
me.c = {} -- holds all "native _f()"
ASR(not _ENV.clss[id], me,
'interface/class "'..id..'" is already declared')
-- restart variables/events counting
_N = 0
_E = 1 -- 0=NONE
_ENV.clss[id] = me
_ENV.clss[#_ENV.clss+1] = me
if me.is_ifc then
me.n = #_ENV.clss_ifc -- TODO: n=>?
_ENV.clss_ifc[id] = me
_ENV.clss_ifc[#_ENV.clss_ifc+1] = me
else
me.n = #_ENV.clss_cls -- TODO: remove Main? -- TODO: n=>?
_ENV.clss_cls[id] = me
_ENV.clss_cls[#_ENV.clss_cls+1] = me
end
end,
Dcl_cls = function (me)
_ENV.max_evt = MAX(_ENV.max_evt, _E)
-- all identifiers in all interfaces get a unique N
if me.is_ifc then
for _, var in pairs(me.blk_ifc.vars) do
var.ifc_id = var.ifc_id or var2ifc(var)
if not _ENV.ifcs[var.ifc_id] then
if var.pre == 'var' then
_ENV.ifcs.flds[var.ifc_id] = #_ENV.ifcs.flds
_ENV.ifcs.flds[#_ENV.ifcs.flds+1] = var.ifc_id
elseif var.pre == 'event' then
_ENV.ifcs.evts[var.ifc_id] = #_ENV.ifcs.evts
_ENV.ifcs.evts[#_ENV.ifcs.evts+1] = var.ifc_id
else -- 'function'
_ENV.ifcs.funs[var.ifc_id] = #_ENV.ifcs.funs
_ENV.ifcs.funs[#_ENV.ifcs.funs+1] = var.ifc_id
end
end
end
end
end,
Dcl_det = function (me) -- TODO: verify in _ENV.c
local id1 = det2id(me[1])
local t1 = _ENV.dets[id1] or {}
_ENV.dets[id1] = t1
for i=2, #me do
local id2 = det2id(me[i])
local t2 = _ENV.dets[id2] or {}
_ENV.dets[id2] = t2
t1[id2] = true
t2[id1] = true
end
end,
Global = function (me)
ASR(_ENV.clss.Global and _ENV.clss.Global.is_ifc, me,
'interface "Global" is not defined')
me.tp = 'Global*'
me.lval = false
me.ref = me
me.fst = me
me.blk = _AST.root
end,
This = function (me)
local cls
local constr = _AST.iter'Dcl_constr'()
if constr then
cls = constr.cls
else
cls = CLS()
--ASR(cls ~= _MAIN, me, 'invalid access')
end
ASR(cls, me, 'undeclared class')
me.tp = cls.id
me.lval = false
me.ref = me
me.fst = me
me.blk = cls.blk_ifc
end,
Free = function (me)
local exp = unpack(me)
local _tp = _TP.deref(exp.tp)
ASR(_tp and _ENV.clss[_tp], me, 'invalid `free´')
end,
TupleType_pos = function (me)
local TP = 'tceu'
for i, v in ipairs(me) do
local hold, tp, id = unpack(v)
if tp == 'void' then
ASR(#me==1, me, 'invalid type')
TP = 'void'
me[1] = nil -- empty tuple
break
end
--local tp_noptr = _TP.noptr(v)
--local c = _ENV.c[tp_noptr]
--ASR(c or _ENV.clss[tp_noptr],
--me, 'undeclared type `'..tp_noptr..'´')
--me[i] = v
TP = TP .. '__'..(hold or '')..'_'.._TP.c(tp)
end
TP = string.gsub(TP, '*', '_') -- TODO: '_' is not reliable
me.tp = TP
if _AST.iter'Dcl_fun'() then
-- keep the tables for functions
return
else
-- substitute the table for the struct type
_ENV.c[TP] = { tag='type', id=TP, tuple=me, len=nil }
return TP -- me => TP
end
end,
Dcl_ext = function (me)
local dir, delay, ins, out, id = unpack(me)
if _ENV.exts[id] then
WRN(false, me, 'event "'..id..'" is already declared')
-- TODO: check fields?
return
end
-- TODO: ins?
newtype(ins)
ASR(ins=='void' or ins=='int' or _TP.deref(ins) or _TP.isTuple(ins),
me, 'invalid event type')
me.evt = {
ln = me.ln,
id = id,
pre = dir,
ins = ins,
out = out or 'int',
mod = { delay=delay },
op = (out and 'call' or 'emit')
}
_ENV.exts[#_ENV.exts+1] = me.evt
_ENV.exts[id] = me.evt
end,
Dcl_var_pre = function (me)
-- changes TP from ast.lua
if me.__ast_ref then
local ref = me.__ast_ref
local evt = ref.evt or (ref.var and ref.var.evt)
ASR(evt, me,
'event "'..(ref.var and ref.var.id or '?')..'" is not declared')
if me[2] == 'TP' then
me[2] = evt.ins
else -- 'TP*'
me[2] = evt.ins..'*'
end
ASR( _TP.isTuple(evt.ins), me, 'invalid type' )
end
end,
Dcl_var = function (me)
local pre, tp, arr, id, constr = unpack(me)
local has
has, me.var = newvar(me, false, _AST.iter'Block'(), pre, tp, arr, id)
assert(not has or (me.var.read_only==nil))
me.var.read_only = me.read_only
if constr then
constr.blk = me.var.blk
end
end,
Dcl_int = function (me)
local pre, tp, id = unpack(me)
ASR(tp=='void' or tp=='int' or _TP.deref(tp) or _TP.isTuple(tp),
me, 'invalid event type')
local _
_, me.var = newint(me, false, _AST.iter'Block'(), pre, tp, id)
end,
Dcl_fun = function (me)
local pre, delay, ins, out, id, blk = unpack(me)
local cls = CLS()
-- implementation cannot be inside interface, so,
-- if it appears on blk_body, make it be in blk_ifc
local up = _AST.iter'Block'()
if blk and cls.blk_body==up and cls.blk_ifc.vars[id] then
up = cls.blk_ifc
end
local _
_, me.var = newfun(me, false, up, pre, delay, ins, out, id)
-- "void" as parameter only if single
if #ins > 1 then
for _, v in ipairs(ins) do
local _, tp, _ = unpack(v)
ASR(tp ~= 'void', me, 'invalid declaration')
end
end
if not blk then
return
end
-- full definitions must contain parameter ids
for _, v in ipairs(ins) do
local hold, tp, id = unpack(v)
ASR(tp=='void' or id, me, 'missing parameter identifier')
end
end,
Dcl_imp = function (me)
local id = unpack(me)
local ifc = ASR(_ENV.clss[id], me,
'interface "'..id..'" is not declared')
ASR(ifc.is_ifc, me, '`'..id..'´ is not an interface')
-- copy vars
local blk = _AST.iter'Block'()
for _, var in ipairs(ifc.blk_ifc.vars) do
if var.pre == 'var' then
local tp = (var.arr and _TP.deref(var.tp)) or var.tp
newvar(me, true, blk, var.pre, tp, var.arr, var.id)
elseif var.pre == 'event' then
newint(me, true, blk, var.pre, var.evt.ins, var.id)
else
newfun(me, true, blk, var.pre, var.fun.mod.delay,
var.fun.ins, var.fun.out, var.id)
end
CLS().c[var.id] = ifc.c[var.id] -- also copy C properties
end
end,
Ext = function (me)
local id = unpack(me)
me.evt = ASR(_ENV.exts[id], me,
'event "'..id..'" is not declared')
end,
Var = function (me)
local id = unpack(me)
local blk = me.__adj_blk or _AST.iter('Block')()
local var = _ENV.getvar(id, blk)
ASR(var, me, 'variable/event "'..id..'" is not declared')
me.var = var
me.tp = var.tp
me.lval = not (var.pre~='var' or var.cls or var.arr)
and var
me.ref = me
me.fst = var
end,
Dcl_nat = function (me)
local mod, tag, id, len = unpack(me)
--assert(not len) -- TODO: not using len anymore
if _AST.iter'BlockI'() then
ASR(tag == 'func', me, 'only methods are allowed')
-- native _f() => CEU_T__f (must be defined manually)
local cls = CLS()
local tp = '___typeof__(CEU_'..cls.id..'_'..id..')'
_ENV.c[tp] = { tag='type', id=tp }
newvar(me, false, _AST.iter'Block'(), 'var', tp..'*', false, id)
cls.c[id] = { tag=tag, id=id, mod=mod }
else
_ENV.c[id] = { tag=tag, id=id, len=len, mod=mod }
end
end,
Dcl_pure = function (me)
_ENV.pures[me[1]] = true
end,
AwaitS = function (me)
local wclock
for _, awt in ipairs(me) do
if awt.__ast_isexp then
F.AwaitInt(me, awt)
elseif awt.tag~='Ext' then
ASR(not wclock, me,
'invalid await: multiple timers')
wclock = true
end
end
error'me.fst'
--me.fst = ?
end,
AwaitInt = function (me, int)
local int = int or unpack(me)
ASR(int.var and int.var.pre=='event', me,
'event "'..(int.var and int.var.id or '?')..'" is not declared')
me.fst = int.fst
me.tp = int.var.evt.ins -- <a = await ...>
end,
AwaitExt = function (me)
local ext = unpack(me)
me.fst = 'global'
me.tp = ext.evt.ins -- <a = await ...>
end,
AwaitT = function (me)
me.tp = 's32' -- <a = await ...>
end,
EmitInt = function (me)
local _, int, ps = unpack(me)
local var = int.var
ASR(var and var.pre=='event', me,
'event "'..(var and var.id or '?')..'" is not declared')
ASR(var.evt.ins=='void' or (ps and _TP.contains(var.evt.ins,ps.tp,true)),
me, 'invalid emit')
end,
EmitExt = function (me)
local op, ext, ps = unpack(me)
ASR(ext.evt.op == op, me, 'invalid `'..op..'´')
if op == 'call' then
me.tp = ext.evt.out -- return value
else
me.tp = 'int' -- [0,1] enqueued? (or 'int' return val)
end
if ps then
ASR(_TP.contains(ext.evt.ins,ps.tp,true), me,
"non-matching types on `emit´")
else
ASR(ext.evt.ins=='void' or
_TP.isTuple(ext.evt.ins) and #ext.evt.ins==0,
me, "missing parameters on `emit´")
end
end,
--------------------------------------------------------------------------
SetExp = function (me)
local _, fr, to = unpack(me)
to = to or _AST.iter'SetBlock'()[1]
ASR(to and to.lval, me, 'invalid attribution')
ASR(_TP.contains(to.tp,fr.tp,true), me,
'invalid attribution ('..to.tp..' vs '..fr.tp..')')
ASR(me.read_only or (not to.lval.read_only), me,
'read-only variable')
ASR(not CLS().is_ifc, me, 'invalid attribution')
if fr.tag=='Ref' and fr[1].tag=='New' then
-- a = new T
fr[1].blk = to.ref.var.blk -- to = me.__par[3]
-- refuses (x.ptr = new T;)
ASR( _AST.isChild(CLS(),to.ref.var.blk), me,
'invalid attribution (no scope)' )
end
end,
Free = function (me)
local exp = unpack(me)
local id = ASR(_TP.deref(exp.tp), me, 'invalid `free´')
me.cls = ASR( _ENV.clss[id], me,
'class "'..id..'" is not declared')
end,
-- _pre: give error before "set" inside it
New_pre = function (me)
local max, id, constr = unpack(me)
me.cls = ASR(_ENV.clss[id], me,
'class "'..id..'" is not declared')
ASR(not me.cls.is_ifc, me, 'cannot instantiate an interface')
me.fst = 'global' -- "a = new T" ("a" will determine)
me.fst = 'global' -- "a = spawn T" (constant value 0/1)
me.tp = id..'*' -- class id
end,
Spawn_pre = function (me, blk)
local max, id, constr = unpack(me)
F.New_pre(me)
me.blk = ASR(_AST.iter'Do'(), me,
'`spawn´ requires enclosing `do ... end´')
me.blk = me.blk[1]
me.tp = 'int' -- 0/1
end,
Dcl_constr_pre = function (me)
local spw = _AST.iter'Spawn'()
local new = _AST.iter'New'()
local dcl = _AST.iter'Dcl_var'()
-- type check for this.* inside constructor
if spw then
me.cls = _ENV.clss[ spw[2] ] -- checked on Spawn
elseif new then
me.cls = _ENV.clss[ new[2] ] -- checked on SetExp
elseif dcl then
me.cls = _ENV.clss[ dcl[2] ] -- checked on Dcl_var
end
--assert(me.cls)
end,
CallStmt = function (me)
local call = unpack(me)
ASR(call.tag == 'Op2_call', me, 'invalid statement')
end,
Thread = function (me)
me.tp = 'int' -- 0/1
end,
--------------------------------------------------------------------------
Op2_call = function (me)
local _, f, _, _ = unpack(me)
me.tp = '_'
me.fst = '_'
local id
if f.tag == 'Nat' then
id = f[1]
me.c = _ENV.c[id]
elseif f.tag == 'Op2_.' then
id = f.id
if f.org then -- t._f()
me.c = assert(_ENV.clss[f.org.tp]).c[f.id]
else -- _x._f()
me.c = f.c
end
else
id = (f.var and f.var.id) or '$anon'
me.c = { tag='func', id=id, mod=nil }
end
ASR((not _OPTS.c_calls) or _OPTS.c_calls[id], me,
'native calls are disabled')
if not me.c then
me.c = { tag='func', id=id, mod=nil }
_ENV.c[id] = me.c
end
--ASR(me.c and me.c.tag=='func', me,
--'native function "'..id..'" is not declared')
_ENV.calls[id] = true
end,
Op2_idx = function (me)
local _, arr, idx = unpack(me)
local tp = ASR(_TP.deref(arr.tp,true), me, 'cannot index a non array')
ASR(tp and _TP.isNumeric(idx.tp,true), me, 'invalid array index')
me.tp = tp
me.lval = (not _ENV.clss[tp]) and arr
me.ref = arr.ref
me.fst = arr.fst
end,
Op2_int_int = function (me)
local op, e1, e2 = unpack(me)
me.tp = 'int'
ASR(_TP.isNumeric(e1.tp,true) and _TP.isNumeric(e2.tp,true), me,
'invalid operands to binary "'..op..'"')
end,
['Op2_-'] = 'Op2_int_int',
['Op2_+'] = 'Op2_int_int',
['Op2_%'] = 'Op2_int_int',
['Op2_*'] = 'Op2_int_int',
['Op2_/'] = 'Op2_int_int',
['Op2_|'] = 'Op2_int_int',
['Op2_&'] = 'Op2_int_int',
['Op2_<<'] = 'Op2_int_int',
['Op2_>>'] = 'Op2_int_int',
['Op2_^'] = 'Op2_int_int',
Op1_int = function (me)
local op, e1 = unpack(me)
me.tp = 'int'
ASR(_TP.isNumeric(e1.tp,true), me,
'invalid operand to unary "'..op..'"')
end,
['Op1_~'] = 'Op1_int',
['Op1_-'] = 'Op1_int',
Op2_same = function (me)
local op, e1, e2 = unpack(me)
me.tp = 'int'
ASR(_TP.max(e1.tp,e2.tp,true), me,
'invalid operands to binary "'..op..'"')
end,
['Op2_=='] = 'Op2_same',
['Op2_!='] = 'Op2_same',
['Op2_>='] = 'Op2_same',
['Op2_<='] = 'Op2_same',
['Op2_>'] = 'Op2_same',
['Op2_<'] = 'Op2_same',
Op2_any = function (me)
me.tp = 'int'
end,
['Op2_or'] = 'Op2_any',
['Op2_and'] = 'Op2_any',
['Op1_not'] = 'Op2_any',
['Op1_*'] = function (me)
local op, e1 = unpack(me)
me.tp = _TP.deref(e1.tp, true)
me.lval = e1.lval and e1
me.ref = e1.ref
me.fst = e1.fst
ASR(me.tp, me, 'invalid operand to unary "*"')
end,
['Op1_&'] = function (me)
local op, e1 = unpack(me)
ASR(_ENV.clss[e1.tp] or e1.lval, me, 'invalid operand to unary "&"')
me.tp = e1.tp..'*'
me.lval = false
me.ref = e1.ref
me.fst = e1.fst
end,
['Op2_.'] = function (me)
local op, e1, id = unpack(me)
local cls = _ENV.clss[e1.tp]
me.id = id
if cls then
me.org = e1
-- me[3]: id => Var
local var
if e1.tag == 'This' then
-- accept private "body" vars
var = cls.blk_body.vars[id]
--[[
-- class T with
-- do
-- var int a;
-- this.a = 1;
-- end
--]]
end
var = var or ASR(cls.blk_ifc.vars[id], me,
'variable/event "'..id..'" is not declared')
me[3] = _AST.node('Var', me.ln, '$'..id)
me[3].var = var
me.org = e1
me.var = var
me.tp = var.tp
me.lval = not (var.pre~='var' or var.cls or var.arr)
and var
me.ref = me[3]
else
local tup = _TP.isTuple(e1.tp)
ASR(tup or _TP.ext(e1.tp,true), me, 'not a struct')
if tup then
local n = tonumber(string.match(id,'(%d+)'))
if tup[n] then
local _,tp,_ = unpack(tup[n])
me.tp = tp
else
me.tp = 'void'
end
else
me.tp = '_'
end
me.lval = e1.lval
me.ref = e1.ref
end
me.fst = e1.fst
end,
Op1_cast = function (me)
local tp, exp = unpack(me)
me.tp = tp
me.lval = exp.lval
me.ref = exp.ref
me.fst = exp.fst
end,
Nat = function (me)
local id = unpack(me)
local c = _ENV.c[id]
ASR((not c) or c.tag~='type', me,
'native variable/function "'..id..'" is not declared')
me.tp = '_'
me.lval = me
me.ref = me
me.fst = '_'
me.c = c
end,
RawExp = function (me)
me.tp = '_'
me.lval = me
me.ref = me
me.fst = '_'
end,
WCLOCKK = function (me)
me.tp = 'int'
me.lval = false
me.fst = 'global'
end,
WCLOCKE = 'WCLOCKK',
SIZEOF = function (me)
me.tp = 'int'
me.lval = false
me.fst = 'global'
me.const = true
end,
STRING = function (me)
me.tp = 'char*'
me.lval = false
me.fst = 'global'
me.const = true
end,
NUMBER = function (me)
local v = unpack(me)
ASR(string.sub(v,1,1)=="'" or tonumber(v), me, 'malformed number')
if string.find(v,'%.') or string.find(v,'e') or string.find(v,'E') then