finally got rid of nkPassAsOpenArray

compiler/ast.nim

@@ -112,7 +112,6 @@ type
     nkChckRange,          # range check for ints
     nkStringToCString,    # string to cstring
     nkCStringToString,    # cstring to string
-    nkPassAsOpenArray,    # thing is passed as an open array
                           # end of expressions
 
     nkAsgn,               # a = b

compiler/ccgexprs.nim

@@ -819,6 +819,29 @@ proc fixupCall(p: BProc, t: PNode, d: var TLoc, pl: PRope) =
     app(p.s[cpsStmts], pl)
     app(p.s[cpsStmts], ';' & tnl)
 
+proc openArrayLoc(a: TLoc): PRope =
+  case skipTypes(a.t, abstractVar).kind
+  of tyOpenArray:
+    result = ropef("$1, $1Len0", [rdLoc(a)])
+  of tyString, tySequence:
+    result = ropef("$1->data, $1->$2", [rdLoc(a), lenField()])
+  of tyArray, tyArrayConstr:
+    result = ropef("$1, $2", [rdLoc(a), toRope(lengthOrd(a.t))])
+  else: InternalError("openArrayLoc: " & typeToString(a.t))
+
+proc genArg(p: BProc, n: PNode, param: PSym): PRope =
+  var a: TLoc
+  if skipTypes(param.typ, abstractVar).kind == tyOpenArray:
+    var n = if n.kind != nkHiddenAddr: n else: n.sons[0]
+    initLocExpr(p, n, a)
+    result = openArrayLoc(a)
+  elif ccgIntroducedPtr(param): 
+    initLocExpr(p, n, a)
+    result = addrLoc(a)
+  else:
+    initLocExpr(p, n, a)
+    result = rdLoc(a)
+
 proc genCall(p: BProc, t: PNode, d: var TLoc) =
   var op, a: TLoc
   # this is a hotspot in the compiler
@@ -828,14 +851,12 @@ proc genCall(p: BProc, t: PNode, d: var TLoc) =
   assert(typ.kind == tyProc)
   var length = sonsLen(t)
   for i in countup(1, length - 1):
-    initLocExpr(p, t.sons[i], a) # generate expression for param
     assert(sonsLen(typ) == sonsLen(typ.n))
     if i < sonsLen(typ):
       assert(typ.n.sons[i].kind == nkSym)
-      var param = typ.n.sons[i].sym
+      app(pl, genArg(p, t.sons[i], typ.n.sons[i].sym))
-      if ccgIntroducedPtr(param): app(pl, addrLoc(a))
-      else: app(pl, rdLoc(a))
     else:
+      initLocExpr(p, t.sons[i], a) # generate expression for param
       app(pl, rdLoc(a))
     if i < length - 1: app(pl, ", ")
   fixupCall(p, t, d, pl)
@@ -847,26 +868,22 @@ proc genInfixCall(p: BProc, t: PNode, d: var TLoc) =
   var typ = t.sons[0].typ # getUniqueType() is too expensive here!
   assert(typ.kind == tyProc)
   var length = sonsLen(t)
-  initLocExpr(p, t.sons[1], a) # generate expression for first param
   assert(sonsLen(typ) == sonsLen(typ.n))
   
   var param = typ.n.sons[1].sym
-  if ccgIntroducedPtr(param): app(pl, addrLoc(a))
+  app(pl, genArg(p, t.sons[1], param))
-  else: app(pl, rdLoc(a))
   
   if skipTypes(param.typ, {tyGenericInst}).kind == tyPtr: app(pl, "->")
   else: app(pl, ".")
   app(pl, op.r)
   app(pl, "(")
   for i in countup(2, length - 1):
-    initLocExpr(p, t.sons[i], a) # generate expression for param
     assert(sonsLen(typ) == sonsLen(typ.n))
     if i < sonsLen(typ):
       assert(typ.n.sons[i].kind == nkSym)
-      var param = typ.n.sons[i].sym
+      app(pl, genArg(p, t.sons[i], typ.n.sons[i].sym))
-      if ccgIntroducedPtr(param): app(pl, addrLoc(a))
-      else: app(pl, rdLoc(a))
     else:
+      initLocExpr(p, t.sons[i], a) # generate expression for param      
       app(pl, rdLoc(a))
     if i < length - 1: app(pl, ", ")
   fixupCall(p, t, d, pl)
@@ -882,20 +899,13 @@ proc genNamedParamCall(p: BProc, t: PNode, d: var TLoc) =
   assert(sonsLen(typ) == sonsLen(typ.n))
   
   if length > 1:
-    initLocExpr(p, t.sons[1], a)
+    app(pl, genArg(p, t.sons[1], typ.n.sons[1].sym))
-    var param = typ.n.sons[1].sym
-    if ccgIntroducedPtr(param): app(pl, addrLoc(a))
-    else: app(pl, rdLoc(a))
     app(pl, " ")
   app(pl, op.r)
   if length > 2:
-    initLocExpr(p, t.sons[2], a)
     app(pl, ": ")
-    var param = typ.n.sons[2].sym
+    app(pl, genArg(p, t.sons[2], typ.n.sons[2].sym))
-    if ccgIntroducedPtr(param): app(pl, addrLoc(a))
-    else: app(pl, rdLoc(a))
   for i in countup(3, length-1):
-    initLocExpr(p, t.sons[i], a) # generate expression for param
     assert(sonsLen(typ) == sonsLen(typ.n))
     if i >= sonsLen(typ):
       InternalError(t.info, "varargs for objective C method?")
@@ -904,8 +914,7 @@ proc genNamedParamCall(p: BProc, t: PNode, d: var TLoc) =
     app(pl, " ")
     app(pl, param.name.s)
     app(pl, ": ")
-    if ccgIntroducedPtr(param): app(pl, addrLoc(a))
+    app(pl, genArg(p, t.sons[i], param))
-    else: app(pl, rdLoc(a))
   if typ.sons[0] != nil:
     if isInvalidReturnType(typ.sons[0]):
       if sonsLen(t) > 1: app(pl, " ")
@@ -1174,10 +1183,11 @@ proc genDollar(p: BProc, n: PNode, d: var TLoc, frmt: string) =
   genAssignment(p, d, a, {})
 
 proc genArrayLen(p: BProc, e: PNode, d: var TLoc, op: TMagic) =
-  var typ = skipTypes(e.sons[1].Typ, abstractPtrs)
+  var a = e.sons[1]
+  if a.kind == nkHiddenAddr: a = a.sons[0]
+  var typ = skipTypes(a.Typ, abstractVar)
   case typ.kind
   of tyOpenArray:
-    while e.sons[1].kind == nkPassAsOpenArray: e.sons[1] = e.sons[1].sons[0]
     if op == mHigh: unaryExpr(p, e, d, "($1Len0-1)")
     else: unaryExpr(p, e, d, "$1Len0")
   of tyCstring:
@@ -1386,23 +1396,6 @@ proc genRangeChck(p: BProc, n: PNode, d: var TLoc, magic: string) =
 proc genConv(p: BProc, e: PNode, d: var TLoc) =
   genCast(p, e, d)
 
-proc passToOpenArray(p: BProc, n: PNode, d: var TLoc) =
-  var a: TLoc
-  while n.sons[0].kind == nkPassAsOpenArray:
-    n.sons[0] = n.sons[0].sons[0] # BUGFIX
-  var dest = skipTypes(n.typ, abstractVar)
-  case skipTypes(n.sons[0].typ, abstractVar).kind
-  of tyOpenArray:
-    initLocExpr(p, n.sons[0], a)
-    putIntoDest(p, d, dest, ropef("$1, $1Len0", [rdLoc(a)]))
-  of tyString, tySequence:
-    initLocExpr(p, n.sons[0], a)
-    putIntoDest(p, d, dest, ropef("$1->data, $1->$2", [rdLoc(a), lenField()]))
-  of tyArray, tyArrayConstr:
-    initLocExpr(p, n.sons[0], a)
-    putIntoDest(p, d, dest, ropef("$1, $2", [rdLoc(a), toRope(lengthOrd(a.t))]))
-  else: InternalError(n.sons[0].info, "passToOpenArray: " & typeToString(a.t))
-
 proc convStrToCStr(p: BProc, n: PNode, d: var TLoc) =
   var a: TLoc
   initLocExpr(p, n.sons[0], a)
@@ -1827,7 +1820,6 @@ proc expr(p: BProc, e: PNode, d: var TLoc) =
   of nkChckRange: genRangeChck(p, e, d, "chckRange")
   of nkStringToCString: convStrToCStr(p, e, d)
   of nkCStringToString: convCStrToStr(p, e, d)
-  of nkPassAsOpenArray: passToOpenArray(p, e, d)
   of nkLambda:
     var sym = e.sons[namePos].sym
     genProc(p.module, sym)

compiler/ecmasgen.nim

@@ -1390,7 +1390,6 @@ proc gen(p: var TProc, n: PNode, r: var TCompRes) =
   of nkChckRange: genRangeChck(p, n, r, "chckRange")
   of nkStringToCString: convStrToCStr(p, n, r)
   of nkCStringToString: convCStrToStr(p, n, r)
-  of nkPassAsOpenArray: gen(p, n.sons[0], r)
   of nkStmtListExpr: genStmtListExpr(p, n, r)
   of nkEmpty: nil
   else: InternalError(n.info, "gen: unknown node type: " & $n.kind)

compiler/evals.nim

@@ -1083,7 +1083,6 @@ proc evalAux(c: PEvalContext, n: PNode, flags: TEvalFlags): PNode =
   of nkChckRangeF, nkChckRange64, nkChckRange: result = evalRangeChck(c, n)
   of nkStringToCString: result = evalConvStrToCStr(c, n)
   of nkCStringToString: result = evalConvCStrToStr(c, n)
-  of nkPassAsOpenArray: result = evalAux(c, n.sons[0], flags)
   of nkStmtListExpr, nkStmtList, nkModule: 
     for i in countup(0, sonsLen(n) - 1): 
       result = evalAux(c, n.sons[i], flags)

compiler/renderer.nim

@@ -355,8 +355,7 @@ proc lsub(n: PNode): int =
   of nkChckRangeF: result = len("chckRangeF") + 2 + lcomma(n)
   of nkChckRange64: result = len("chckRange64") + 2 + lcomma(n)
   of nkChckRange: result = len("chckRange") + 2 + lcomma(n)
-  of nkObjDownConv, nkObjUpConv, nkStringToCString, nkCStringToString, 
+  of nkObjDownConv, nkObjUpConv, nkStringToCString, nkCStringToString: 
-     nkPassAsOpenArray: 
     result = 2
     if sonsLen(n) >= 1: result = result + lsub(n.sons[0])
     result = result + lcomma(n, 1)
@@ -730,8 +729,7 @@ proc gsub(g: var TSrcGen, n: PNode, c: TContext) =
     put(g, tkParLe, "(")
     gcomma(g, n)
     put(g, tkParRi, ")")
-  of nkObjDownConv, nkObjUpConv, nkStringToCString, nkCStringToString, 
+  of nkObjDownConv, nkObjUpConv, nkStringToCString, nkCStringToString: 
-     nkPassAsOpenArray: 
     if sonsLen(n) >= 1: gsub(g, n.sons[0])
     put(g, tkParLe, "(")
     gcomma(g, n, 1)

compiler/semexprs.nim

@@ -1224,8 +1224,7 @@ proc semExpr(c: PContext, n: PNode, flags: TExprFlags = {}): PNode =
   of nkBlockExpr: result = semBlockExpr(c, n)
   of nkHiddenStdConv, nkHiddenSubConv, nkConv, nkHiddenCallConv: 
     checkSonsLen(n, 2)
-  of nkStringToCString, nkCStringToString, nkPassAsOpenArray, nkObjDownConv, 
+  of nkStringToCString, nkCStringToString, nkObjDownConv, nkObjUpConv: 
-     nkObjUpConv: 
     checkSonsLen(n, 1)
   of nkChckRangeF, nkChckRange64, nkChckRange: 
     checkSonsLen(n, 3)

compiler/semfold.nim

@@ -375,7 +375,6 @@ proc getConstExpr(m: PSym, n: PNode): PNode =
                                n)
       of mLengthOpenArray:
         var a = n.sons[1]
-        if a.kind == nkPassAsOpenArray: a = a.sons[0]
         if a.kind == nkBracket: 
           # we can optimize it away! This fixes the bug ``len(134)``. 
           result = newIntNodeT(sonsLen(a), n)

compiler/semtempl.nim

@@ -12,7 +12,7 @@ proc isExpr(n: PNode): bool =
   case n.kind
   of nkIdent..nkNilLit: 
     result = true
-  of nkCall..nkPassAsOpenArray: 
+  of nkCall..pred(nkAsgn): 
     for i in countup(0, sonsLen(n) - 1): 
       if not isExpr(n.sons[i]): 
         return false

compiler/semthreads.nim

@@ -341,7 +341,7 @@ proc analyse(c: PProcCtx, n: PNode): TThreadOwner =
   of nkHiddenStdConv, nkHiddenSubConv, nkConv, nkCast: 
     result = analyse(c, n.sons[1])
   of nkStringToCString, nkCStringToString, nkChckRangeF, nkChckRange64,
-     nkChckRange, nkCheckedFieldExpr, nkPassAsOpenArray, nkObjDownConv, 
+     nkChckRange, nkCheckedFieldExpr, nkObjDownConv, 
      nkObjUpConv:
     result = analyse(c, n.sons[0])
   of nkRaiseStmt:

compiler/sigmatch.nim

@@ -499,13 +499,13 @@ proc ParamTypesMatchAux(c: PContext, m: var TCandidate, f, a: PType,
     result = copyTree(arg)
     result.typ = getInstantiatedType(c, arg, m, f) 
     # BUG: f may not be the right key!
-    if (skipTypes(result.typ, abstractVar).kind in {tyTuple, tyOpenArray}): 
+    if (skipTypes(result.typ, abstractVar).kind in {tyTuple}): 
       result = implicitConv(nkHiddenStdConv, f, copyTree(arg), m, c) 
       # BUGFIX: use ``result.typ`` and not `f` here
   of isEqual: 
     inc(m.exactMatches)
     result = copyTree(arg)
-    if (skipTypes(f, abstractVar).kind in {tyTuple, tyOpenArray}): 
+    if (skipTypes(f, abstractVar).kind in {tyTuple}): 
       result = implicitConv(nkHiddenStdConv, f, copyTree(arg), m, c)
   of isNone: 
     result = userConvMatch(c, m, f, a, arg) 

compiler/transf.nim

@@ -268,8 +268,7 @@ proc transformLoopBody(c: PTransf, n: PNode): PTransNode =
 
 proc skipConv(n: PNode): PNode = 
   case n.kind
-  of nkObjUpConv, nkObjDownConv, nkPassAsOpenArray, nkChckRange, nkChckRangeF, 
+  of nkObjUpConv, nkObjDownConv, nkChckRange, nkChckRangeF, nkChckRange64:
-     nkChckRange64: 
     result = n.sons[0]
   of nkHiddenStdConv, nkHiddenSubConv, nkConv:
     result = n.sons[1]
@@ -337,11 +336,10 @@ proc addVar(father, v: PNode) =
 
 proc transformAddrDeref(c: PTransf, n: PNode, a, b: TNodeKind): PTransNode = 
   case n.sons[0].kind
-  of nkObjUpConv, nkObjDownConv, nkPassAsOpenArray, nkChckRange, nkChckRangeF, 
+  of nkObjUpConv, nkObjDownConv, nkChckRange, nkChckRangeF, nkChckRange64: 
-     nkChckRange64: 
     var m = n.sons[0].sons[0]
     if (m.kind == a) or (m.kind == b): 
-      # addr ( nkPassAsOpenArray ( deref ( x ) ) ) --> nkPassAsOpenArray(x)
+      # addr ( nkConv ( deref ( x ) ) ) --> nkConv(x)
       var x = copyTree(n)
       x.sons[0].sons[0] = m.sons[0]
       result = transform(c, x.sons[0])
@@ -397,8 +395,7 @@ proc transformConv(c: PTransf, n: PNode): PTransNode =
     else:
       result = transformSons(c, n)
   of tyOpenArray: 
-    result = newTransNode(nkPassAsOpenArray, n, 1)
+    result = transform(c, n.sons[1])
-    result[0] = transform(c, n.sons[1])
   of tyCString: 
     if source.kind == tyString: 
       result = newTransNode(nkStringToCString, n, 1)
@@ -442,10 +439,6 @@ proc transformConv(c: PTransf, n: PNode): PTransNode =
   else: 
     result = transformSons(c, n)
   
-proc skipPassAsOpenArray(n: PNode): PNode = 
-  result = n
-  while result.kind == nkPassAsOpenArray: result = result.sons[0]
-  
 type 
   TPutArgInto = enum 
     paDirectMapping, paFastAsgn, paVarAsgn
@@ -491,7 +484,7 @@ proc transformFor(c: PTransf, n: PNode): PTransNode =
   # generate access statements for the parameters (unless they are constant)
   pushTransCon(c, newC)
   for i in countup(1, sonsLen(call) - 1): 
-    var arg = skipPassAsOpenArray(transform(c, call.sons[i]).pnode)
+    var arg = transform(c, call.sons[i]).pnode
     var formal = skipTypes(newC.owner.typ, abstractInst).n.sons[i].sym 
     case putArgInto(arg, formal.typ)
     of paDirectMapping: 

lib/core/macros.nim

@@ -30,7 +30,7 @@ type
     nnkHiddenSubConv, nnkHiddenCallConv, nnkConv, nnkCast, 
     nnkAddr, nnkHiddenAddr, nnkHiddenDeref, nnkObjDownConv, 
     nnkObjUpConv, nnkChckRangeF, nnkChckRange64, nnkChckRange, 
-    nnkStringToCString, nnkCStringToString, nnkPassAsOpenArray, nnkAsgn, 
+    nnkStringToCString, nnkCStringToString, nnkAsgn, 
     nnkFastAsgn, nnkGenericParams, nnkFormalParams, nnkOfInherit, 
     nnkModule, nnkProcDef, nnkMethodDef, nnkConverterDef, 
     nnkMacroDef, nnkTemplateDef, nnkIteratorDef, nnkOfBranch,