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Lunatic translator: prototypical array/struct access, for reference only.

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git-svn-id: https://svn.eduke32.com/eduke32@3432 1a8010ca-5511-0410-912e-c29ae57300e0
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helixhorned 2013-01-24 20:03:06 +00:00
parent 79384f0e79
commit faae812293
2 changed files with 154 additions and 37 deletions
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69
polymer/eduke32/source/lunatic/con_lang.lua
View file

@ -302,6 +302,75 @@ wdata_members =
"int32_t flashcolor",
}
ActorLabels =
{
x = "sprite[%s].x",
y = "sprite[%s].y",
z = "sprite[%s].z",
cstat = "sprite[%s].cstat",
picnum = "sprite[%s].picnum",
shade = "sprite[%s].shade",
pal = "sprite[%s].pal",
clipdist = "sprite[%s].clipdist",
-- filler = "sprite[%s].filler",
detail = "sprite[%s].filler",
xrepeat = "sprite[%s].xrepeat",
yrepeat = "sprite[%s].yrepeat",
xoffset = "sprite[%s].xoffset",
yoffset = "sprite[%s].yoffset",
sectnum = "sprite[%s].sectnum",
statnum = "sprite[%s].statnum",
ang = "sprite[%s].ang",
owner = "sprite[%s].owner",
xvel = "sprite[%s].xvel",
yvel = "sprite[%s].yvel",
zvel = "sprite[%s].zvel",
lotag = "sprite[%s].lotag",
hitag = "sprite[%s].hitag",
extra = "sprite[%s].extra",
-- { get, set }
-- Read access differs from write:
ulotag = { "(sprite[%s].lotag+65536)%65535", "sprite[%s].lotag" },
uhitag = { "(sprite[%s].hitag+65536)%65535", "sprite[%s].hitag" },
-- ActorExtra labels...
htcgg = "actor[%s].cgg",
htpicnum = "actor[%s].picnum",
htang = "actor[%s].ang",
htextra = "actor[%s].extra",
htowner = "actor[%s].owner",
htmovflag = "actor[%s].movflag",
httempang = "actor[%s].tempang",
htactorstayput = "actor[%s].actorstayput",
htdispicnum = "actor[%s].dispicnum",
httimetosleep = "actor[%s].timetosleep",
htfloorz = "actor[%s].floorz",
htceilingz = "actor[%s].ceilingz",
htlastvx = "actor[%s].lastvx",
htlastvy = "actor[%s].lastvy",
htbposx = "actor[%s].bpos.x",
htbposy = "actor[%s].bpos.y",
htbposz = "actor[%s].bpos.z",
-- Read access differs from write, write not available:
htg_t = { "actor[%s].get_t_data(%s)" },
htflags = "actor[%s].flags",
-- model flags
angoff = "spriteext[%s].angoff",
pitch = "spriteext[%s].pitch",
roll = "spriteext[%s].roll",
mdxoff = "spriteext[%s].xoff",
mdyoff = "spriteext[%s].yoff",
mdzoff = "spriteext[%s].zoff",
mdflags = "spriteext[%s].mdflags",
xpanning = "spriteext[%s].xpanning",
ypanning = "spriteext[%s].ypanning",
alpha = { "_math.floor(spriteext[%s].alpha*255)" },
}
-- NOTE: These MUST be in reverse lexicographical order!
-- Per CON syntax, valid identifiers names are disjunct from keywords,
-- so that a rule like

122
polymer/eduke32/source/lunatic/lunacon.lua
View file

@ -400,6 +400,7 @@ local function reset_labels()
COOP = 0,
MULTIMODE = 0,
numplayers = 1,
myconnectindex = 0,
}
for varname,_ in pairs(g_labeldef) do
@ -910,27 +911,24 @@ local tok =
maybe_minus = (Pat("-") * sp0)^-1,
number = Var("t_number"),
-- Valid identifier names are disjunct from keywords!,
-- XXX: CON is more permissive with identifier name characters:,
-- Valid identifier names are disjunct from keywords!
-- XXX: CON is more permissive with identifier name characters:
identifier = Var("t_identifier"),
-- This one matches keywords, too:,
-- This one matches keywords, too:
identifier_all = Var("t_identifier_all"),
define = Var("t_define"),
move = Var("t_move"),
ai = Var("t_ai"),
action = Var("t_action"),
-- NOTE: no chance to whitespace and double quotes in filenames:,
-- NOTE: no chance to whitespace and double quotes in filenames:
filename = lpeg.C((anychar-Set(" \t\r\n\""))^1),
newline_term_str = match_until(anychar, newline),
-- new-style inline arrays and structures:,
arrayexp = Var("t_arrayexp"),
rvar = Var("t_rvar"),
wvar = Var("t_wvar"),
-- for definelevelname,
-- for definelevelname
time = lpeg.C(alphanum*alphanum^-1*":"*alphanum*alphanum^-1),
state_ends = Pat("ends")
@ -1076,32 +1074,74 @@ end
-- (if there ever were any) but making our life harder else.
local arraypat = sp0 * "[" * sp0 * tok.rvar * sp0 * "]"
-- Have to bite the bullet here and list actor/player members with second parameters,
-- even though it's ugly to make it part of the syntax. Also, stuff like
-- Have to bite the bullet here and list actor/player members with second
-- parameters, even though it's ugly to make it part of the syntax. Also,
-- stuff like
-- actor[xxx].loogiex parm2 x
-- will be wrongly accepted at the parsing stage because we don't discriminate between
-- actor and player (but it will be rejected later).
local parm2memberpat = (Pat("htg_t") + "loogiex" + "loogiey" + "ammo_amount" +
"weaprecs" + "gotweapon" + "pals" + "max_ammo_amount") * sp1 * tok.rvar
-- will be wrongly accepted at the parsing stage (loogiex is player's member)
-- because we don't discriminate between actor and player here.
local parm2memberpat = lpeg.C(Pat("htg_t") + "loogiex" + "loogiey" + "ammo_amount" +
"weaprecs" + "gotweapon" + "pals" + "max_ammo_amount") * sp1 * tok.rvar
-- The member name must match keywords, too (_all), because e.g. cstat is a member
-- of sprite[].
local memberpat = sp0 * "." * sp0 * (parm2memberpat + tok.identifier_all)
local bothmemberpat = sp0 * "." * sp0 * lpeg.Ct(parm2memberpat + tok.identifier_all)
local singlememberpat = sp0 * "." * sp0 * tok.identifier_all
local getstructcmd = -- get<structname>[<idx>].<member> (<parm2>)? <<var>>
-- existence of a second parameter is determined later
-- This is wrong, (sp1 id)? will match (sp1 wvar) if there's no 2nd param:
-- arraypat * memberpat * (sp1 * tok.identifier)^-1 * sp1 * tok.wvar
arraypat * memberpat * sp1 * (tok.rvar * sp1 * tok.wvar + tok.wvar)
arraypat * bothmemberpat * sp1 * tok.wvar
local setstructcmd = -- set<structname>[<idx>].<member> (<parm2>)? <var>
-- existence of a second parameter is determined later
arraypat * memberpat * sp1 * (tok.rvar * sp1 * tok.rvar + tok.rvar)
local setstructcmd = -- set<structname>[<idx>].<<member>> (<parm2>)? <var>
arraypat * bothmemberpat * sp1 * tok.rvar
local getperxvarcmd = -- get<actor/player>var[<idx>].<member> <<var>>
arraypat * memberpat * sp1 * tok.wvar
arraypat * singlememberpat * sp1 * tok.wvar
local setperxvarcmd = -- set<actor/player>var[<idx>].<member> <var>
arraypat * memberpat * sp1 * tok.rvar
local setperxvarcmd = -- set<actor/player>var[<idx>].<<member>> <var>
arraypat * singlememberpat * sp1 * tok.rvar
local Access =
{
-- <writtenp>: whether the actor is written to.
actor = function(writtenp, index, membertab)
assert(type(membertab)=="table")
local member, parm2 = membertab[1], membertab[2]
assert(member ~= nil)
-- Look up array+member name first, e.g. "spriteext[%s].angoff".
local armembcode = conl.ActorLabels[member]
if (armembcode == nil) then
errprintf("invalid CON actor member `%s'", member)
return "_MEMBINVALID"
end
if (type(armembcode)=="table") then
-- Read and write accesses differ.
armembcode = armembcode[writtenp and 2 or 1]
if (armembcode==nil) then
assert(writtenp)
errprintf("write access to CON actor[].%s is not available", member)
return "_MEMBRO"
end
end
local _, numparms = armembcode:gsub("%%s", "%%s", 2)
if (#membertab ~= numparms) then
local one = numparms==1
errprintf("CON actor[].%s has %s parameter%s, but %d given", member,
one and "one" or "two", one and "" or "s", #membertab)
return "_MEMBINVPARM"
end
return format(armembcode, index, parm2)
end,
}
local function GetStructCmd(accessfunc)
local pattern = getstructcmd / function(idx, memb, var)
return format("%s=%s", var, accessfunc(false, idx, memb))
end
return pattern
end
-- Various inner command handling functions / string capture strings.
@ -1166,7 +1206,7 @@ local Cinner = {
/ handle.state,
--- 1. get*, set*
getactor = getstructcmd,
getactor = GetStructCmd(Access.actor),
getinput = getstructcmd,
getplayer = getstructcmd,
getprojectile = getstructcmd,
@ -1175,9 +1215,13 @@ local Cinner = {
gettspr = getstructcmd,
-- NOTE: {get,set}userdef is the only struct that can be accessed without
-- an "array part", e.g. H266MOD has "setuserdef .weaponswitch 0" (space
-- between keyword and "." is mandatory)
getuserdef = (arraypat + sp1) * memberpat * sp1 * (tok.rvar * sp1 * tok.wvar + tok.wvar),
-- getuserdef = getstructcmd,
-- between keyword and "." is mandatory).
-- NOTE2: userdef has at least three members with a second parameter:
-- user_name, ridecule, savegame. Then there's wchoice. Given that they're
-- arrays, I highly doubt that they worked (much less were safe) in CON.
-- We disallow them unless CONs in the wild crop up that actually used
-- these.
getuserdef = (arraypat + sp1)/{} * singlememberpat * sp1 * tok.wvar,
getwall = getstructcmd,
getactorvar = getperxvarcmd,
@ -1190,8 +1234,7 @@ local Cinner = {
setsector = setstructcmd,
setthisprojectile = setstructcmd,
settspr = setstructcmd,
setuserdef = (arraypat + sp1) * memberpat * sp1 * (tok.rvar * sp1 * tok.wvar + tok.rvar),
-- setuserdef = setstructcmd,
setuserdef = (arraypat + sp1)/{} * singlememberpat * sp1 * tok.rvar,
setwall = setstructcmd,
setactorvar = setperxvarcmd,
@ -1983,7 +2026,7 @@ local Grammar = Pat{
+ Range("09")^1)
) / parse_number,
t_identifier_all = t_broken_identifier + t_good_identifier,
t_identifier_all = lpeg.C(t_broken_identifier + t_good_identifier),
-- NOTE: -conl.keyword alone would be wrong, e.g. "state breakobject":
-- NOTE 2: The + "[" is so that stuff like
-- getactor[THISACTOR].x x
@ -1992,7 +2035,7 @@ local Grammar = Pat{
-- getactor[THISACTOR].x x
-- getactor [THISACTOR].y y
-- This is in need of cleanup!
t_identifier = -NotKeyw(conl.keyword * (sp1 + "[")) * lpeg.C(tok.identifier_all),
t_identifier = -NotKeyw(conl.keyword * (sp1 + "[")) * tok.identifier_all,
-- TODO?: SST TC has e.g. "1267AT", relying on it to be parsed as a number "1267".
-- However, this conflicts with bad-identifiers, so it should be checked last.
-- This would also handle LNGA2's "00000000h", though would give problems with
@ -2001,9 +2044,12 @@ local Grammar = Pat{
-- Defines and constants can take the place of vars that are only read.
-- XXX: now, when tok.rvar fails, the tok.define failure message is printed.
t_rvar = tok.arrayexp + lpeg.Cmt(tok.identifier, maybe_gamevar_Cmt) + tok.define,
-- not so with written-to vars:
t_wvar = tok.arrayexp + (tok.identifier / function(id) return lookup_gamevar(id, true) end),
t_rvar = Var("t_botharrayexp") / function() --[[warnprintf("t_rvar: array exprs NYI")--]] return "_NYIVAR" end
+ lpeg.Cmt(tok.identifier, maybe_gamevar_Cmt) + tok.define,
-- For written-to vars, only (non-parm2) array exprs and writable gamevars
-- are permitted. NOTE: C-CON doesn't support inline array exprs here.
t_wvar = Var("t_singlearrayexp") / function() errprintf("t_wvar: array exprs NYI") return "_NYIVAR" end
+ (tok.identifier / function(id) return lookup_gamevar(id, true) end),
t_move =
POS()*tok.identifier / function(...) return lookup_composite(LABEL.MOVE, ...) end +
@ -2017,7 +2063,9 @@ local Grammar = Pat{
POS()*tok.identifier / function(...) return lookup_composite(LABEL.ACTION, ...) end +
POS()*tok.number / function(...) return check_composite_literal(LABEL.ACTION, ...) end,
t_arrayexp = tok.identifier * arraypat * memberpat^-1,
-- New-style inline arrays and structures.
t_botharrayexp = tok.identifier * arraypat * bothmemberpat^-1,
t_singlearrayexp = tok.identifier * arraypat * singlememberpat^-1,
-- SWITCH
switch_stmt = Keyw("switch") * sp1 * tok.rvar *