1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461
|
(*
* Pretty printer for the AST
*
* Allen Leung (leunga@cs.nyu.edu)
*)
functor MDLAstPrettyPrinter(AstUtil : MDL_AST_UTIL) : MDL_AST_PRETTY_PRINTER =
struct
structure Ast = AstUtil.Ast
open PP Ast MDLError
infix ++
fun error msg = MDLError.error("error while processing "^msg)
val goodBreak = nl'(5,3) (* if over column 75, tab and indent by 3 *)
val goodFunBreak = nl'(5,3) (* if over column 75, tab and indent by 3 *)
val comma = !! ", "
val semi = !! "; "
val cons = !! "::"
val dot = !! "."
val list = seq(!! "[",comma++goodBreak,!! "]")
val tuple = seq(!! "(",comma++goodBreak,!! ")")
val vector = seq(!! "#[",comma++goodBreak,!! "]")
val record = seq(!! "{",comma++goodBreak,!! "}")
val bars = seq(settab,nl'(5,0) ++ tab' ~2 ++ ! "|" ++ tab,unindent)
val ands = seq(settab,tab' ~4 ++ ! "and" ++ tab,unindent)
fun isAlpha "" = true
| isAlpha s = Char.isAlpha(String.sub(s,0))
fun isMLSym #"'" = false
| isMLSym #"_" = false
| isMLSym #"." = false
| isMLSym c = Char.isPunct c
fun isComplex s =
let fun loop(~1, alpha, sym) = alpha andalso sym
| loop(i, alpha, sym) =
let val c = String.sub(s,i)
in loop(i-1, alpha orelse Char.isAlphaNum c,
sym orelse isMLSym c)
end
in loop(String.size s - 1, false, false) end
fun encodeChar c = if isMLSym c then "_"^Int.toString(Char.ord c)
else Char.toString c
fun encodeName s = String.translate encodeChar s
fun name id = if isComplex id then encodeName id else id
fun ident(IDENT([],id)) = if isSym id then !"op" ++ ! id
else if isAlpha id then !(name id)
else sp ++ !id
| ident(IDENT(p,id)) = seq(nop,dot,nop) (map ! (p @[name id]))
and literal(WORDlit w) = word w
| literal(WORD32lit w) = word32 w
| literal(INTINFlit i) =
select
(fn "code" =>
(!"(IntInf.fromInt" ++ int(IntInf.toInt i) ++ !!")"
handle Overflow =>
!"(Option.valOf(IntInt.fromString"++string(IntInf.toString i)++ !!"))"
)
| _ => intinf i
)
| literal(INTlit i) = int i
| literal(INT32lit i) = int32 i
| literal(STRINGlit s) = string s
| literal(CHARlit c) = char c
| literal(BOOLlit b) = bool b
| literal(REALlit r) = !r
and exp(LITexp l) = literal l
| exp(IDexp id) = ident id
| exp(CONSexp(id,e)) = ident id ++ sp ++ exp' e
| exp(LISTexp(es,NONE)) = if length es >= 10 then longlistexp es
else list (map appexp es)
| exp(LISTexp([],SOME e)) = exp e
| exp(LISTexp(es,SOME e)) = seq(nop,cons,cons) (map exp es) ++ exp e
| exp(TUPLEexp [e]) = exp e
| exp(TUPLEexp es) = tuple (map appexp es)
| exp(VECTORexp es) = vector (map appexp es)
| exp(RECORDexp es) = record(map labexp es)
| exp(SEQexp []) = ! "()"
| exp(SEQexp [e]) = exp e
| exp(SEQexp es) = nl ++ tab ++
seq(! "(" ++ sp ++
settab,semi++nl++tab,unindent ++ tab ++ ! ")")
(map appexp es)
| exp(APPexp(e as IDexp(IDENT([],f)),e' as TUPLEexp[x,y])) =
if isSym f then
paren(exp x ++ sp ++ ! f ++ sp ++ exp y)
else
paren(exp e ++ !! " " ++ exp e')
| exp(APPexp(f,x)) = paren(appexp f ++ !! " " ++ exp x)
| exp(IFexp(x,y,z)) = paren(line(! "if" ++ sp ++ exp x) ++
block(line(! "then" ++ sp ++ exp y) ++
tab ++ ! "else" ++ sp ++ exp z))
| exp(RAISEexp e) = ! "raise" ++ exp e
| exp(HANDLEexp(e,c)) = paren(exp e ++ sp ++ ! "handle" ++ sp ++ clauses c)
| exp(CASEexp(e,c)) =
nl ++ line(! "(case" ++ sp ++ appexp e ++ sp ++ ! "of")
++ tab' 2 ++ settab ++ block(clauses c) ++ unindent ++ tab ++ !!")"
| exp(LAMBDAexp c) = group ("(",")") (! "fn" ++ sp ++ clauses c)
| exp(LETexp([],e)) = expseq e
| exp(LETexp(d,e)) = nl ++ tab ++ ! "let" ++ sp ++ settab ++
decls d ++ unindent ++
line(! "in" ++ sp ++ expseq e) ++ tab ++ ! "end"
| exp(TYPEDexp(e,t)) = paren(exp e ++ sp ++ !!":" ++ sp ++ ty t)
| exp(MARKexp(_,e)) = exp e
| exp(LOCexp(id,e,region)) = locexp(id,e,region)
| exp(BITSLICEexp(e,slices)) =
select(fn "code" => exp(AstUtil.BITSLICE(e,slices))
| "pretty" => exp e ++ sp ++ ! "at" ++
list(map (fn (i,j) => int i ++ !! ".." ++ int j) slices)
| mode => (error mode; nop)
)
| exp(TYPEexp t) = ty t
| exp(ASMexp a) = (error "PP.ASMexp"; nop)
| exp(RTLexp r) =
select(fn "pretty" => rtl r
| mode => (error mode; nop)
)
| exp(CONTexp(e,x)) = exp e
and rtl r = seq(!"[[",sp,!"]]") (map rtlterm r)
and rtlterm(LITrtl s) = string s
| rtlterm(IDrtl x) = ! x
and longlistexp es =
select(fn "pretty" => list(map appexp es)
| "code" => codelonglistexp es)
and prettylonglistexp es =
nl ++ tab ++ seq(! "[",comma++nl++tab,! "]") (map appexp es)
and codelonglistexp es =
nl ++
line(!"let infix $$ fun x $$ y = y::x") ++
line(!"in nil") ++
block(concat(map (fn e => line(!"$$" ++ appexp e)) (rev es))) ++
line(!"end")
and appexp(APPexp(e as IDexp(IDENT([],f)),e' as TUPLEexp[x,y])) =
if isSym f then exp x ++ sp ++ ! f ++ sp ++ exp y
else exp e ++ !! " " ++ exp e'
| appexp(APPexp(f,x)) = (appexp f ++ !! " " ++ exp x)
| appexp(SEQexp[e]) = appexp e
| appexp(TUPLEexp[e]) = appexp e
| appexp e = exp e
and exp' NONE = nop
| exp'(SOME e) = if isParenedExp e then exp e else paren(exp e)
and isParenedExp(IDexp _) = true
| isParenedExp(TUPLEexp []) = true
| isParenedExp(TUPLEexp [x]) = isParenedExp x
| isParenedExp(TUPLEexp _) = true
| isParenedExp(RECORDexp _) = true
| isParenedExp(LISTexp _) = true
| isParenedExp(VECTORexp _) = true
| isParenedExp _ = false
and isSym "+" = true
| isSym "-" = true
| isSym "*" = true
| isSym "mod" = true
| isSym "div" = true
| isSym "=" = true
| isSym "<>" = true
| isSym "<" = true
| isSym ">" = true
| isSym ">=" = true
| isSym "<=" = true
| isSym "<<" = true
| isSym ">>" = true
| isSym "~>>" = true
| isSym "||" = true
| isSym "&&" = true
| isSym "^" = true
| isSym ":=" = true
| isSym "::" = true
| isSym "@" = true
| isSym "andalso" = true
| isSym "orelse" = true
| isSym "o" = true
| isSym _ = false
and locexp(id,e,region) =
select(fn "pretty" =>
!!"$" ++ ! id ++ !!"[" ++ exp e ++
(case region of
SOME r => ! ":" ++ ! r
| NONE => nop
) ++
!!"]"
| "code" => paren(exp e ++ ! "+" ++ !("offset"^id))
| mode => (error mode; nop)
)
and decl(DATATYPEdecl(dbs,tbs)) = datatypedecl(dbs,tbs)
| decl(FUNdecl(fbs)) = fundecl fbs
| decl(RTLdecl(p,e,_)) =
line(! "rtl " ++ pat p ++ ! "=" ++ exp e)
| decl(VALdecl(vbs)) = valdecl vbs
| decl(VALSIGdecl(ids,ty)) = valsig("val",ids,ty)
| decl(RTLSIGdecl(ids,ty)) = valsig("rtl",ids,ty)
| decl(TYPESIGdecl(id,tvs)) = typesig(id,tvs)
| decl(LOCALdecl([],d2)) = decls d2
| decl(LOCALdecl(d1,d2)) =
line(! "local") ++ block(decls d1) ++ line(! "in ") ++
block(decls d2) ++ line(! "end")
| decl(SEQdecl ds) = decls ds
| decl($ ds) = concat(map line (map !! ds))
| decl(STRUCTUREdecl(id,[],s,se)) =
line(! "structure" ++ ! id ++ sigconOpt(s) ++ ! "=" ++ sexp se)
| decl(STRUCTURESIGdecl(id,se)) =
line(! "structure" ++ ! id ++ !":" ++ sigexp se)
| decl(STRUCTUREdecl(id,ds,s,se)) =
line(! "functor" ++ ! id ++ settab ++ !! "(" ++ settab ++
decls ds ++ unindent ++
tab ++ !! ")" ++ unindent ++ sigconOpt(s) ++
! "=" ++ nl ++ sexp se)
| decl(FUNCTORdecl(id,[],s,se)) =
line(! "functor" ++ ! id ++ sigconOpt(s) ++ ! "=" ++ nl ++ sexp se)
| decl(FUNCTORdecl(id,ds,s,se)) =
line(! "functor" ++ ! id ++ settab ++ !! "(" ++ settab ++
decls ds ++ unindent ++
tab ++ !! ")" ++ unindent ++ sigconOpt(s) ++
! "=" ++ nl ++ sexp se)
| decl(SIGNATUREdecl(id,se)) =
line(! "signature" ++ ! id ++ ! "=" ++ sigexp se)
| decl(OPENdecl ids) =
line(! "open" ++ seq(nop,sp,nop)(map ident ids))
| decl(INCLUDESIGdecl s) = line(! "include" ++ sigexp s)
| decl(FUNCTORARGdecl(id,se)) = ! id ++ sigcon se
| decl(EXCEPTIONdecl ebs) =
line(!"exception" ++ ands(map exceptionbind ebs))
| decl(SHARINGdecl s) = line(! "sharing" ++ ands(map share s))
| decl(MARKdecl(l,d)) =
nl++ !(SourceMapping.directive l) ++nl ++ decl d
| decl(INFIXdecl(i,ids)) = line(! "infix" ++ int i ++ concat(map ! ids))
| decl(INFIXRdecl(i,ids)) = line(! "infixr" ++ int i ++ concat(map ! ids))
| decl(NONFIXdecl ids) = line(! "nonfix" ++ concat(map ! ids))
| decl(ARCHdecl(id,ds)) =
line(! "architecture" ++ ! id ++ !"=" ++ decls ds)
| decl(BITSORDERINGdecl _) = line(! "bitsordering...")
| decl(FORMATdecl _) = line(!"instruction formats ...")
| decl(ARCHKINDdecl SUPERSCALAR) = line(!"superscalar")
| decl(ARCHKINDdecl VLIW) = line(!"vliw")
| decl(ENDIANESSdecl LITTLE) = line(!"little endian")
| decl(ENDIANESSdecl BIG) = line(!"big endian")
| decl(STORAGEdecl _) = line(!"storage ...")
| decl(LOCATIONSdecl _) = line(!"locations ...")
| decl(NAMEdecl _) = line(!"name ...")
| decl(VERSIONdecl _) = line(!"version ...")
| decl(ASSEMBLYCASEdecl _) = line(!"assembly ...")
| decl(INSTRUCTIONdecl cbs) = line(!"instruction" ++
tab' ~6 ++ consbinds cbs)
| decl(DEBUGdecl _) = line(!"debug ...")
| decl(RESOURCEdecl _) = line(!"resource ...")
| decl(CPUdecl _) = line(!"cpu ...")
| decl(PIPELINEdecl _) = line(!"pipeline ...")
| decl(LATENCYdecl _) = line(!"latency ...")
and exceptionbind(EXCEPTIONbind(id,NONE)) = ! id
| exceptionbind(EXCEPTIONbind(id,SOME t)) = !id ++ !"of" ++ ty t
| exceptionbind(EXCEPTIONEQbind(id,id')) = !id ++ !"=" ++ ident id'
and share(TYPEshare ids) = !"type" ++ seq(nop,! "=",nop) (map ident ids)
| share(STRUCTshare ids) = seq(nop,! "=",nop) (map ident ids)
and sigexp(IDsig id) = ident id
| sigexp(WHEREsig(se,x,s)) =
sigexp se ++ !"where" ++ ident x ++ !! "=" ++ sexp s
| sigexp(WHERETYPEsig(se,x,t)) =
sigexp se ++ !"where type" ++ ident x ++ !! "=" ++ ty t
| sigexp(DECLsig ds) = line(!"sig") ++ block(decls ds) ++ line(!"end")
and sigconOpt(NONE) = nop
| sigconOpt(SOME s) = sigcon s
and sigcon{abstract=false,sigexp=s} = !":" ++ sigexp s
| sigcon{abstract=true,sigexp=s} = !":>" ++ sigexp s
and sexp (IDsexp id) = ident id
| sexp (APPsexp(a,DECLsexp ds)) = sexp a ++ nl ++
block(line(group("(",")") (decls ds)))
| sexp (APPsexp(a,IDsexp id)) = sexp a ++ paren(ident id)
| sexp (APPsexp(a,b)) = sexp a ++ nl ++ paren(sexp b)
| sexp (DECLsexp ds) = line(!"struct") ++ block(decls ds) ++ line(!"end")
| sexp (CONSTRAINEDsexp(s,si)) = sexp s ++ !":" ++ sigexp si
and decls ds = concat (map decl ds)
and valsig (keyword,[],t) = nop
| valsig (keyword,id::ids,t) =
line(! keyword ++ ! id ++ ! ":" ++ sp ++ ty t) ++
valsig(keyword,ids,t)
and typesig (id,tvs) = line(! "type" ++ tyvars tvs ++ ! id)
and expseq es = block(seq(nop,semi++nl++tab,nop) (map appexp es))
and labexp(id,e) = ! id ++ !! "=" ++ appexp e
and ty(IDty id) = ident id
| ty(TYVARty tv) = tyvar tv
| ty(APPty(id,[t])) = pty t ++ sp ++ ident id
| ty(APPty(id,tys)) = tuple(map ty tys) ++ sp ++ ident id
| ty(FUNty(x,y)) = ty x ++ !! " -> " ++ fty y
| ty(TUPLEty []) = ! "unit"
| ty(TUPLEty [t]) = ty t
| ty(TUPLEty tys) = seq(nop,!! " * ",nop) (map pty tys)
| ty(RECORDty labtys) = record(map labty labtys)
| ty(CELLty id) =
select( fn "pretty" => !!"$" ++ !id
| "code" => !(if id = "cellset" then "C.cellset"
else "CellsBasis.cell")
| mode => (error mode; nop)
)
| ty(VARty(TYPEkind,i,_,ref NONE)) = !("'X"^Int.toString i)
| ty(VARty(INTkind,i,_,ref NONE)) =
select (fn "pretty" => !("#X"^Int.toString i)
| "code" => !("T"^Int.toString i))
| ty(VARty(_,_,_,ref(SOME t))) = ty t
| ty(POLYty(vars,t)) = ty t
| ty(INTVARty i) = select (fn "pretty" => !!"#" ++ int i
| "code" => int i)
| ty(LAMBDAty(vars,t)) = !!"\\" ++ tuple(map ty vars) ++ !!"." ++ ty t
and fty(t as FUNty _) = ty t
| fty t = pty t
and pty(t as FUNty _) = paren(ty t)
| pty(TUPLEty[t]) = pty t
| pty(t as TUPLEty []) = ty t
| pty(t as TUPLEty _) = paren(ty t)
| pty(t as RECORDty _) = ty t
| pty(t as IDty _) = ty t
| pty(t as APPty _) = ty t
| pty(t as VARty _) = ty t
| pty(t as TYVARty _) = ty t
| pty t = paren(ty t)
and labty (id,t) = ! id ++ !! ":" ++ ty t
and pat(IDpat id) = if isSym id then !"op" ++ !id else !(name id)
| pat(WILDpat) = ! "_"
| pat(ASpat(id,p)) = paren(!id ++ !"as" ++ sp ++ pat p)
| pat(LITpat l) = literal l
| pat(LISTpat(ps,NONE)) = list(map pat ps)
| pat(LISTpat([],SOME p)) = pat p
| pat(LISTpat(ps,SOME p)) = seq(nop,cons,cons) (map pat ps) ++ pat p
| pat(TUPLEpat [p]) = pat p
| pat(TUPLEpat ps) = tuple(map pat ps)
| pat(VECTORpat ps) = vector(map pat ps)
| pat(RECORDpat(lps,flex)) =
record(map labpat lps @ (if flex then [! "..."] else []))
| pat(TYPEDpat(p,t)) = paren(pat p ++ !! ":" ++ ty t)
| pat(CONSpat(id,NONE)) = ident id
| pat(CONSpat(IDENT([],"::"),SOME(TUPLEpat[x,y]))) =
paren(pat x ++ sp ++ !!"::" ++ sp ++ pat y)
| pat(CONSpat(id,SOME p)) = ident id ++ ppat p
| pat(ORpat [p]) = pat p
| pat(ORpat ps) =
if length ps > 10
then nl ++ tab ++ seq(! "(",! "|"++nl++tab,! ")") (map pat ps)
else seq(!! "(", ! "|"++sp, !! ")") (map pat ps)
| pat(ANDpat [p]) = pat p
| pat(ANDpat ps) = seq(!! "(",sp ++ !"and" ++ sp, !!")") (map pat ps)
| pat(NOTpat p) = !"not" ++ sp ++ pat p
| pat(WHEREpat(p,e)) = pat p ++ sp ++ !"where" ++ sp ++ exp e
| pat(NESTEDpat(p,e,p')) = pat p ++ sp ++ !"where" ++ sp ++ exp e ++
sp ++ !"in" ++ sp ++ pat p'
and ppat(p as (CONSpat _ | ASpat _)) = paren(pat p)
| ppat p = pat p
and pats ps = concat(map pat ps)
and ppats ps = concat(map (fn p => ppat p ++ sp) ps)
and labpat(id,p as IDpat id') =
if id = id' then ! id
else ! id ++ !! "=" ++ pat p
| labpat(id,p) = ! id ++ !! "=" ++ pat p
and funbind(FUNbind(id,c)) = bars (map (funclause id) c)
and funbinds fbs = ands (map funbind fbs)
and funclause id (CLAUSE(ps,g,e)) =
line(!(name id) ++ sp ++ ppats ps ++ sp ++ guard g ++ ! "=" ++
sp ++ goodFunBreak ++ appexp e)
and guard NONE = nop
| guard (SOME e) = ! "where" ++ sp ++ appexp e ++ sp
and clause (CLAUSE([p],g,e)) =
line(settab ++ pat p ++ sp ++ guard g ++
! "=>" ++ sp ++ goodFunBreak ++ appexp e ++ unindent)
| clause (CLAUSE(ps,g,e)) =
line(settab ++ ppats ps ++ sp ++ guard g ++
! "=>" ++ sp ++ appexp e ++ unindent)
and clauses c = block(bars (map clause c))
and fundecl [] = nop
| fundecl fbs = (* nl ++ *) tab ++ ! "fun" ++ sp ++ settab ++
funbinds fbs ++ unindent
and valbind (VALbind(p,e)) =
line(settab ++ pat p ++ sp ++ ! "=" ++ sp ++ appexp e ++ unindent)
and valbinds vbs = block(ands (map valbind vbs))
and valdecl [] = nop
| valdecl vbs = tab ++ ! "val" ++ sp ++ valbinds vbs
and datatypebind(DATATYPEbind{id,tyvars=ts,cbs,...}) =
line(tyvars ts ++ ! id ++ ! "=") ++
tab' ~6 ++ consbinds cbs
| datatypebind(DATATYPEEQbind{id,tyvars=ts,ty=t,...}) =
line(tyvars ts ++ ! id ++ ! "=" ++ !"datatype" ++ ty t)
and datatypebinds ds = block(ands(map datatypebind ds))
and consbinds cbs = bars(map consbind cbs)
and consbind(CONSbind{id,ty=NONE,...}) = line(! id)
| consbind(CONSbind{id,ty=SOME t,...}) = line(! id ++ ! "of" ++ sp ++ ty t)
and typebind(TYPEbind(id,ts,t)) =
line (tyvars ts ++ !id ++ ! "=" ++ sp ++ ty t)
and typebinds tbs = block(ands (map typebind tbs))
and tyvars [] = nop
| tyvars [t] = tyvar t
| tyvars tvs = tuple(map tyvar tvs)
and tyvar (VARtv tv) = ! tv
| tyvar (INTtv tv) = sp ++ !! "#" ++ ! tv
and range(x,y) = paren(int x ++ comma ++ int y)
and datatypedecl([],t) = tab ++ ! "type" ++ block(ands (map typebind t))
| datatypedecl(d,t) =
tab ++ ! "datatype" ++
datatypebinds d ++
(case t of
[] => nop
| _ => tab ++ ! "withtype" ++ typebinds t
)
end
|