changed integer promotion rules; breaks bootstrapping and lots of code

compiler/ast.nim

@@ -224,7 +224,8 @@ type
     sfMainModule,     # module is the main module
     sfSystemModule,   # module is the system module
     sfNoReturn,       # proc never returns (an exit proc)
-    sfAddrTaken,      # the variable's address is taken (ex- or implicitely)
+    sfAddrTaken,      # the variable's address is taken (ex- or implicitely);
+                      # *OR*: a proc is indirectly called (used as first class)
     sfCompilerProc,   # proc is a compiler proc, that is a C proc that is
                       # needed for the code generator
     sfProcvar,        # proc can be passed to a proc var

compiler/ccgexprs.nim

@@ -1037,8 +1037,9 @@ proc genRepr(p: BProc, e: PNode, d: var TLoc) =
   InitLocExpr(p, e.sons[1], a)
   var t = skipTypes(e.sons[1].typ, abstractVarRange)
   case t.kind
-  of tyInt..tyInt64:
+  of tyInt..tyInt64, tyUInt..tyUInt64:
-    putIntoDest(p, d, e.typ, ropecg(p.module, "#reprInt($1)", [rdLoc(a)]))
+    putIntoDest(p, d, e.typ, 
+                ropecg(p.module, "#reprInt((NI64)$1)", [rdLoc(a)]))
   of tyFloat..tyFloat128:
     putIntoDest(p, d, e.typ, ropecg(p.module, "#reprFloat($1)", [rdLoc(a)]))
   of tyBool:

compiler/ecmasgen.nim

@@ -1066,7 +1066,8 @@ proc createVar(p: var TProc, typ: PType, indirect: bool): PRope =
     result = nil
 
 proc isIndirect(v: PSym): bool = 
-  result = (sfAddrTaken in v.flags) and (mapType(v.typ) != etyObject)
+  result = (sfAddrTaken in v.flags) and (mapType(v.typ) != etyObject) and
+    v.kind notin {skProc, skConverter, skMethod, skIterator}
 
 proc genVarInit(p: var TProc, v: PSym, n: PNode, r: var TCompRes) = 
   var 

compiler/magicsys.nim

@@ -74,7 +74,6 @@ proc getSysType(kind: TTypeKind): PType =
     InternalError("wanted: " & $kind & " got: " & $result.kind)
   if result == nil: InternalError("type not found: " & $kind)
 
-when false:
 var
   intTypeCache: array[-5..64, PType]
 
@@ -93,6 +92,34 @@ when false:
     result = copyType(ti, ti.owner, false)
     result.n = literal
 
+proc setIntLitType*(result: PNode) =
+  let i = result.intVal
+  case platform.IntSize
+  of 8: result.typ = getIntLitType(result)
+  of 4:
+    if i >= low(int32) and i <= high(int32):
+      result.typ = getIntLitType(result)
+    else:
+      result.typ = getSysType(tyInt64)
+  of 2:
+    if i >= low(int16) and i <= high(int16):
+      result.typ = getIntLitType(result)
+    elif i >= low(int32) and i <= high(int32):
+      result.typ = getSysType(tyInt32)
+    else:
+      result.typ = getSysType(tyInt64)
+  of 1:
+    # 8 bit CPUs are insane ...
+    if i >= low(int8) and i <= high(int8):
+      result.typ = getIntLitType(result)
+    elif i >= low(int16) and i <= high(int16):
+      result.typ = getSysType(tyInt16)
+    elif i >= low(int32) and i <= high(int32):
+      result.typ = getSysType(tyInt32)
+    else:
+      result.typ = getSysType(tyInt64)
+  else: InternalError(result.info, "invalid int size")
+
 proc getCompilerProc(name: string): PSym = 
   var ident = getIdent(name, hashIgnoreStyle(name))
   result = StrTableGet(compilerprocs, ident)

compiler/saturate.nim

@@ -0,0 +1,79 @@
+#
+#
+#           The Nimrod Compiler
+#        (c) Copyright 2012 Andreas Rumpf
+#
+#    See the file "copying.txt", included in this
+#    distribution, for details about the copyright.
+#
+
+## Saturated arithmetic routines. XXX Make part of the stdlib?
+
+proc `|+|`*(a, b: biggestInt): biggestInt =
+  ## saturated addition.
+  result = a +% b
+  if (result xor a) >= 0'i64 or (result xor b) >= 0'i64:
+    return result
+  if a < 0 or b < 0:
+    result = low(result)
+  else:
+    result = high(result)
+
+proc `|-|`*(a, b: biggestInt): biggestInt =
+  result = a -% b
+  if (result xor a) >= 0'i64 or (result xor not b) >= 0'i64:
+    return result
+  if b > 0:
+    result = low(result)
+  else:
+    result = high(result)
+
+proc `|abs|`*(a: biggestInt): biggestInt =
+  if a != low(a):
+    if a >= 0: result = a
+    else: result = -a
+  else:
+    result = low(a)
+
+proc `|div|`*(a, b: biggestInt): biggestInt =
+  # (0..5) div (0..4) == (0..5) div (1..4) == (0 div 4) .. (5 div 1)
+  if b == 0'i64:
+    # make the same as ``div 1``:
+    result = a
+  elif a == low(a) and b == -1'i64:
+    result = high(result)
+  else:
+    result = a div b
+
+proc `|mod|`*(a, b: biggestInt): biggestInt =
+  if b == 0'i64:
+    result = a
+  else:
+    result = a mod b
+
+proc `|*|`*(a, b: biggestInt): biggestInt =
+  var
+    resAsFloat, floatProd: float64
+  result = a *% b
+  floatProd = toBiggestFloat(a) # conversion
+  floatProd = floatProd * toBiggestFloat(b)
+  resAsFloat = toBiggestFloat(result)
+
+  # Fast path for normal case: small multiplicands, and no info
+  # is lost in either method.
+  if resAsFloat == floatProd: return result
+
+  # Somebody somewhere lost info. Close enough, or way off? Note
+  # that a != 0 and b != 0 (else resAsFloat == floatProd == 0).
+  # The difference either is or isn't significant compared to the
+  # true value (of which floatProd is a good approximation).
+
+  # abs(diff)/abs(prod) <= 1/32 iff
+  #   32 * abs(diff) <= abs(prod) -- 5 good bits is "close enough"
+  if 32.0 * abs(resAsFloat - floatProd) <= abs(floatProd):
+    return result
+  
+  if floatProd >= 0.0:
+    result = high(result)
+  else:
+    result = low(result)

compiler/semcall.nim

@@ -67,9 +67,17 @@ proc resolveOverloads(c: PContext, n, orig: PNode,
       not sameMethodDispatcher(best.calleeSym, alt.calleeSym):
     if best.state != csMatch:
       InternalError(n.info, "x.state is not csMatch")
+    #writeMatches(best)
+    #writeMatches(alt)
+    var args = "("
+    for i in countup(1, sonsLen(n) - 1):
+      if i > 1: add(args, ", ")
+      add(args, typeToString(n.sons[i].typ))
+    add(args, ")")
+
     LocalError(n.Info, errGenerated, msgKindToString(errAmbiguousCallXYZ) % [
       getProcHeader(best.calleeSym), getProcHeader(alt.calleeSym),
-      best.calleeSym.Name.s])
+      args])
 
 proc semResolvedCall(c: PContext, n: PNode, x: TCandidate): PNode =
   assert x.state == csMatch

compiler/semdata.nim

@@ -213,6 +213,11 @@ proc markUsed*(n: PNode, s: PSym) =
     if sfDeprecated in s.flags: Message(n.info, warnDeprecated, s.name.s)
     if sfError in s.flags: LocalError(n.info, errWrongSymbolX, s.name.s)
 
+proc markIndirect*(c: PContext, s: PSym) =
+  if s.kind in {skProc, skConverter, skMethod, skIterator}:
+    incl(s.flags, sfAddrTaken)
+    # XXX add to 'c' for global analysis
+
 proc useSym*(sym: PSym): PNode =
   result = newSymNode(sym)
   markUsed(result, sym)

compiler/semexprs.nim

@@ -74,7 +74,9 @@ proc semSym(c: PContext, n: PNode, s: PSym, flags: TExprFlags): PNode =
         smoduleId != c.module.id and smoduleId != c.friendModule.id: 
       LocalError(n.info, errXCannotBePassedToProcVar, s.name.s)
     result = symChoice(c, n, s)
-    if result.kind == nkSym and isGenericRoutine(result.sym):
+    if result.kind == nkSym:
+      markIndirect(c, result.sym)
+      if isGenericRoutine(result.sym):
         LocalError(n.info, errInstantiateXExplicitely, s.name.s)
   of skConst:
     markUsed(n, s)
@@ -130,9 +132,10 @@ proc checkConversionBetweenObjects(info: TLineInfo, castDest, src: PType) =
     GlobalError(info, errGenerated, MsgKindToString(errIllegalConvFromXtoY) % [
         src.typeToString, castDest.typeToString])
 
-proc checkConvertible(info: TLineInfo, castDest, src: PType) = 
 const 
   IntegralTypes = {tyBool, tyEnum, tyChar, tyInt..tyUInt64}
+
+proc checkConvertible(info: TLineInfo, castDest, src: PType) = 
   if sameType(castDest, src) and castDest.sym == src.sym: 
     # don't annoy conversions that may be needed on another processor:
     if castDest.kind notin {tyInt..tyUInt64, tyNil}:
@@ -177,8 +180,8 @@ proc isCastable(dst, src: PType): bool =
     result = false
   else: 
     result = (ds >= ss) or
-        (skipTypes(dst, abstractInst).kind in {tyInt..tyFloat128}) or
+        (skipTypes(dst, abstractInst).kind in IntegralTypes) or
-        (skipTypes(src, abstractInst).kind in {tyInt..tyFloat128})
+        (skipTypes(src, abstractInst).kind in IntegralTypes)
   
 proc semConv(c: PContext, n: PNode, s: PSym): PNode = 
   if sonsLen(n) != 2: GlobalError(n.info, errConvNeedsOneArg)
@@ -191,9 +194,11 @@ proc semConv(c: PContext, n: PNode, s: PSym): PNode =
     checkConvertible(result.info, result.typ, op.typ)
   else: 
     for i in countup(0, sonsLen(op) - 1):
-      if sameType(result.typ, op.sons[i].typ): 
+      let it = op.sons[i]
-        markUsed(n, op.sons[i].sym)
+      if sameType(result.typ, it.typ): 
-        return op.sons[i]
+        markUsed(n, it.sym)
+        markIndirect(c, it.sym)
+        return it
     localError(n.info, errUseQualifier, op.sons[0].sym.name.s)
 
 proc semCast(c: PContext, n: PNode): PNode = 
@@ -222,7 +227,7 @@ proc semLowHigh(c: PContext, n: PNode, m: TMagic): PNode =
       n.typ = getSysType(tyInt)
     of tyArrayConstr, tyArray: 
       n.typ = n.sons[1].typ.sons[0] # indextype
-    of tyInt..tyInt64, tyChar, tyBool, tyEnum: 
+    of tyInt..tyInt64, tyChar, tyBool, tyEnum, tyUInt8, tyUInt16, tyUInt32: 
       n.typ = n.sons[1].typ
     else: GlobalError(n.info, errInvalidArgForX, opToStr[m])
   result = n
@@ -498,6 +503,24 @@ proc evalAtCompileTime(c: PContext, n: PNode): PNode =
   if n.kind notin nkCallKinds or n.sons[0].kind != nkSym: return
   var callee = n.sons[0].sym
   
+  # constant folding that is necessary for correctness of semantic pass:
+  if callee.magic != mNone and callee.magic in ctfeWhitelist and n.typ != nil:
+    var call = newNodeIT(nkCall, n.info, n.typ)
+    call.add(n.sons[0])
+    var allConst = true
+    for i in 1 .. < n.len:
+      let a = getConstExpr(c.module, n.sons[i])
+      if a != nil: call.add(a)
+      else:
+        allConst = false
+        call.add(n.sons[i])
+    if allConst:
+      result = semfold.getConstExpr(c.module, call)
+      if result.isNil: result = n
+      else: return result
+    result.typ = semfold.getIntervalType(callee.magic, call)
+    
+  # optimization pass: not necessary for correctness of the semantic pass
   if {sfNoSideEffect, sfCompileTime} * callee.flags != {} and
      {sfForward, sfImportc} * callee.flags == {}:
     if sfCompileTime notin callee.flags and 
@@ -901,7 +924,7 @@ proc semSubscript(c: PContext, n: PNode, flags: TExprFlags): PNode =
     if skipTypes(n.sons[1].typ, {tyGenericInst, tyRange, tyOrdinal}).kind in
         {tyInt..tyInt64}: 
       var idx = getOrdValue(n.sons[1])
-      if (idx >= 0) and (idx < sonsLen(arr)): n.typ = arr.sons[int(idx)]
+      if idx >= 0 and idx < sonsLen(arr): n.typ = arr.sons[int(idx)]
       else: GlobalError(n.info, errInvalidIndexValueForTuple)
     else: 
       GlobalError(n.info, errIndexTypesDoNotMatch)
@@ -1302,13 +1325,7 @@ proc semExpr(c: PContext, n: PNode, flags: TExprFlags = {}): PNode =
   of nkNilLit: 
     result.typ = getSysType(tyNil)
   of nkIntLit:
-    # XXX this is stupid:
+    if result.typ == nil: setIntLitType(result)
-    if result.typ == nil: 
-      let i = result.intVal
-      if i >= low(int32) and i <= high(int32):
-        result.typ = getSysType(tyInt)
-      else:
-        result.typ = getSysType(tyInt64)
   of nkInt8Lit:
     if result.typ == nil: result.typ = getSysType(tyInt8)
   of nkInt16Lit: 

compiler/semfold.nim

@@ -13,7 +13,7 @@
 import 
   strutils, lists, options, ast, astalgo, trees, treetab, nimsets, times, 
   nversion, platform, math, msgs, os, condsyms, idents, renderer, types,
-  commands, magicsys
+  commands, magicsys, saturate
 
 proc getConstExpr*(m: PSym, n: PNode): PNode
   # evaluates the constant expression or returns nil if it is no constant
@@ -27,8 +27,15 @@ proc newStrNodeT*(strVal: string, n: PNode): PNode
 # implementation
 
 proc newIntNodeT(intVal: BiggestInt, n: PNode): PNode =
-  if skipTypes(n.typ, abstractVarRange).kind == tyChar: 
+  case skipTypes(n.typ, abstractVarRange).kind
+  of tyInt:
+    result = newIntNode(nkIntLit, intVal)
+    result.typ = getIntLitType(result)
+    # hrm, this is not correct: 1 + high(int) shouldn't produce tyInt64 ...
+    #setIntLitType(result)
+  of tyChar:
     result = newIntNode(nkCharLit, intVal)
+    result.typ = n.typ
   else:
     result = newIntNode(nkIntLit, intVal)
     result.typ = n.typ
@@ -67,6 +74,150 @@ proc ordinalValToString(a: PNode): string =
   else:
     result = $x
 
+proc isFloatRange(t: PType): bool {.inline.} =
+  result = t.kind == tyRange and t.sons[0].kind in {tyFloat..tyFloat128}
+
+proc isIntRange(t: PType): bool {.inline.} =
+  result = t.kind == tyRange and t.sons[0].kind in {
+      tyInt..tyInt64, tyUInt8..tyUInt32}
+
+proc pickIntRange(a, b: PType): PType =
+  if isIntRange(a): result = a
+  elif isIntRange(b): result = b
+  else: result = a
+
+proc isIntRangeOrLit(t: PType): bool =
+  result = isIntRange(t) or isIntLit(t)
+
+proc pickMinInt(n: PNode): biggestInt =
+  if n.kind in {nkIntLit..nkUInt64Lit}:
+    result = n.intVal
+  elif isIntLit(n.typ):
+    result = n.typ.n.intVal
+  elif isIntRange(n.typ):
+    result = firstOrd(n.typ)
+  else:
+    InternalError(n.info, "pickMinInt")
+
+proc pickMaxInt(n: PNode): biggestInt =
+  if n.kind in {nkIntLit..nkUInt64Lit}:
+    result = n.intVal
+  elif isIntLit(n.typ):
+    result = n.typ.n.intVal
+  elif isIntRange(n.typ):
+    result = lastOrd(n.typ)
+  else:
+    InternalError(n.info, "pickMaxInt")
+
+proc makeRange(typ: PType, first, last: biggestInt): PType = 
+  var n = newNode(nkRange)
+  addSon(n, newIntNode(nkIntLit, min(first, last)))
+  addSon(n, newIntNode(nkIntLit, max(first, last)))
+  result = newType(tyRange, typ.owner)
+  result.n = n
+  addSon(result, skipTypes(typ, {tyRange}))
+
+proc makeRangeF(typ: PType, first, last: biggestFloat): PType =
+  var n = newNode(nkRange)
+  addSon(n, newFloatNode(nkFloatLit, min(first.float, last.float)))
+  addSon(n, newFloatNode(nkFloatLit, max(first.float, last.float)))
+  result = newType(tyRange, typ.owner)
+  result.n = n
+  addSon(result, skipTypes(typ, {tyRange}))
+
+proc getIntervalType*(m: TMagic, n: PNode): PType =
+  # Nimrod requires interval arithmetic for ``range`` types. Lots of tedious
+  # work but the feature is very nice for reducing explicit conversions.
+  result = n.typ
+  
+  template commutativeOp(opr: expr) {.immediate.} =
+    let a = n.sons[1]
+    let b = n.sons[2]
+    if isIntRangeOrLit(a.typ) and isIntRangeOrLit(b.typ):
+      result = makeRange(pickIntRange(a.typ, b.typ),
+                         opr(pickMinInt(a), pickMinInt(b)),
+                         opr(pickMaxInt(a), pickMaxInt(b)))
+  
+  template binaryOp(opr: expr) {.immediate.} =
+    let a = n.sons[1]
+    let b = n.sons[2]
+    if isIntRange(a.typ) and b.kind in {nkIntLit..nkUInt64Lit}:
+      result = makeRange(a.typ,
+                         opr(pickMinInt(a), pickMinInt(b)),
+                         opr(pickMaxInt(a), pickMaxInt(b)))
+  
+  case m
+  of mUnaryMinusI, mUnaryMinusI64:
+    let a = n.sons[1].typ
+    if isIntRange(a):
+      # (1..3) * (-1) == (-3.. -1)
+      result = makeRange(a, 0|-|lastOrd(a), 0|-|firstOrd(a))
+  of mUnaryMinusF64:
+    let a = n.sons[1].typ
+    if isFloatRange(a):
+      result = makeRangeF(a, -getFloat(a.n.sons[1]),
+                             -getFloat(a.n.sons[0]))
+  of mAbsF64:
+    let a = n.sons[1].typ
+    if isFloatRange(a):
+      # abs(-5.. 1) == (1..5)
+      result = makeRangeF(a, abs(getFloat(a.n.sons[1])),
+                             abs(getFloat(a.n.sons[0])))
+  of mAbsI, mAbsI64:
+    let a = n.sons[1].typ
+    if isIntRange(a):
+      result = makeRange(a, `|abs|`(getInt(a.n.sons[1])),
+                            `|abs|`(getInt(a.n.sons[0])))
+  of mSucc:
+    let a = n.sons[1].typ
+    let b = n.sons[2].typ
+    if isIntRange(a) and isIntLit(b):
+      # (-5.. 1) + 6 == (-5 + 6)..(-1 + 6)
+      result = makeRange(a, pickMinInt(n.sons[1]) |+| pickMinInt(n.sons[2]),
+                            pickMaxInt(n.sons[1]) |+| pickMaxInt(n.sons[2]))
+  of mPred:
+    let a = n.sons[1].typ
+    let b = n.sons[2].typ
+    if isIntRange(a) and isIntLit(b):
+      result = makeRange(a, pickMinInt(n.sons[1]) |-| pickMinInt(n.sons[2]),
+                            pickMaxInt(n.sons[1]) |-| pickMaxInt(n.sons[2]))
+  of mAddI, mAddI64, mAddU, mAddU64:
+    commutativeOp(`|+|`)
+  of mMulI, mMulI64, mMulU, mMulU64:
+    commutativeOp(`|*|`)
+  of mSubI, mSubI64, mSubU, mSubU64:
+    binaryOp(`|-|`)
+  of mBitandI, mBitandI64:
+    var a = n.sons[1]
+    var b = n.sons[2]
+    # symmetrical:
+    if b.kind notin {nkIntLit..nkUInt64Lit}: swap(a, b)
+    if b.kind in {nkIntLit..nkUInt64Lit}:
+      let x = b.intVal|+|1
+      if (x and -x) == x and x >= 0:
+        result = makeRange(a.typ, 0, b.intVal)
+  of mModI, mModI64, mModU, mModU64:
+    # so ... if you ever wondered about modulo's signedness; this defines it:
+    let a = n.sons[1]
+    let b = n.sons[2]
+    if b.kind in {nkIntLit..nkUInt64Lit}:
+      if b.intVal >= 0:
+        result = makeRange(a.typ, 0, b.intVal-1)
+      else:
+        result = makeRange(a.typ, b.intVal+1, 0)
+  of mDivI, mDivI64, mDivU, mDivU64:
+    binaryOp(`|div|`)
+  of mMinI, mMinI64:
+    commutativeOp(min)
+  of mMaxI, mMaxI64:
+    commutativeOp(max)
+  else: nil
+  
+discard """
+  mShlI, mShlI64,
+  mShrI, mShrI64, mAddF64, mSubF64, mMulF64, mDivF64, mMaxF64, mMinF64
+"""
+
 proc evalOp(m: TMagic, n, a, b, c: PNode): PNode = 
   # b and c may be nil
   result = nil

compiler/semmagic.nim

@@ -40,6 +40,11 @@ proc semTypeTraits(c: PContext, n: PNode): PNode =
     # pass unmodified to evals
     result = n
 
+proc semOrd(c: PContext, n: PNode): PNode =
+  result = n
+  result.typ = makeRangeType(c, firstOrd(n.sons[1].typ),
+                                lastOrd(n.sons[1].typ), n.info)
+
 proc magicsAfterOverloadResolution(c: PContext, n: PNode, 
                                    flags: TExprFlags): PNode =
   case n[0].sym.magic
@@ -49,5 +54,6 @@ proc magicsAfterOverloadResolution(c: PContext, n: PNode,
     result = newStrNodeT(renderTree(n[1], {renderNoComments}), n)
     result.typ = getSysType(tyString)
   of mInstantiationInfo: result = semInstantiationInfo(c, n)
+  of mOrd: result = semOrd(c, n)
   else: result = n
 

compiler/semtypes.nim

@@ -132,7 +132,8 @@ proc semRangeAux(c: PContext, n: PNode, prev: PType): PType =
   var a = semConstExpr(c, n[1])
   var b = semConstExpr(c, n[2])
   if not sameType(a.typ, b.typ): GlobalError(n.info, errPureTypeMismatch)
-  if a.typ.kind notin {tyInt..tyInt64,tyEnum,tyBool,tyChar,tyFloat..tyFloat128}:
+  if a.typ.kind notin {tyInt..tyInt64,tyEnum,tyBool,tyChar,tyFloat..tyFloat128,
+                       tyUInt8..tyUInt32}:
     GlobalError(n.info, errOrdinalTypeExpected)
   if enumHasHoles(a.typ): 
     GlobalError(n.info, errEnumXHasHoles, a.typ.sym.name.s)

compiler/sigmatch.nim

@@ -34,8 +34,13 @@ type
                              # for example
   
   TTypeRelation* = enum      # order is important!
-    isNone, isConvertible, isIntConv, isSubtype, 
+    isNone, isConvertible,
-    isGeneric
+    isIntConv,
+    isSubtype,
+    isSubrange,              # subrange of the wanted type; no type conversion
+                             # but apart from that counts as ``isSubtype``
+    isGeneric,
+    isFromIntLit,            # conversion *from* int literal; proven safe
     isEqual
   
 proc initCandidateAux(c: var TCandidate, callee: PType) {.inline.} = 
@@ -56,10 +61,6 @@ proc initCandidate*(c: var TCandidate, callee: PType) =
 
 proc put(t: var TIdTable, key, val: PType) {.inline.} =
   IdTablePut(t, key, val)
-  when false:
-    if val.kind == tyObject and isDefined"testme" and 
-        IdentEq(val.sym.name, "TTable"):
-      assert false
 
 proc initCandidate*(c: var TCandidate, callee: PSym, binding: PNode, calleeScope = -1) = 
   initCandidateAux(c, callee.typ)
@@ -100,7 +101,7 @@ proc cmpCandidates*(a, b: TCandidate): int =
   if (a.calleeScope != -1) and (b.calleeScope != -1):
     result = a.calleeScope - b.calleeScope
 
-proc writeMatches(c: TCandidate) = 
+proc writeMatches*(c: TCandidate) = 
   Writeln(stdout, "exact matches: " & $c.exactMatches)
   Writeln(stdout, "subtype matches: " & $c.subtypeMatches)
   Writeln(stdout, "conv matches: " & $c.convMatches)
@@ -160,15 +161,25 @@ proc handleRange(f, a: PType, min, max: TTypeKind): TTypeRelation =
   if a.kind == f.kind: 
     result = isEqual
   else:
-    var k = skipTypes(a, {tyRange}).kind
+    let ab = skipTypes(a, {tyRange})
-    if k == f.kind: result = isSubtype
+    let k = ab.kind
-    elif k == tyInt and f.kind in {tyRange, tyInt8..tyUInt64}:
+    if k == f.kind: result = isSubrange
-      # and a.n != nil and a.n.intVal >= firstOrd(f) and
+    elif k == tyInt and f.kind in {tyRange, tyInt8..tyInt64, 
-      #                    a.n.intVal <= lastOrd(f):
+                                   tyUInt..tyUInt64} and
+        isIntLit(ab) and ab.n.intVal >= firstOrd(f) and
+                         ab.n.intVal <= lastOrd(f):
       # integer literal in the proper range; we want ``i16 + 4`` to stay an
       # ``int16`` operation so we declare the ``4`` pseudo-equal to int16
+      result = isFromIntLit
+    elif f.kind == tyInt and k in {tyInt8..tyInt32}:
       result = isIntConv
-    elif k >= min and k <= max: result = isConvertible
+    elif k >= min and k <= max: 
+      result = isConvertible
+    elif a.kind == tyRange and a.sons[0].kind in {tyInt..tyInt64, 
+                                                  tyUInt8..tyUInt32} and
+                         a.n[0].intVal >= firstOrd(f) and
+                         a.n[1].intVal <= lastOrd(f):
+      result = isConvertible
     else: result = isNone
     #elif f.kind == tyInt and k in {tyInt..tyInt32}: result = isIntConv
     #elif f.kind == tyUInt and k in {tyUInt..tyUInt32}: result = isIntConv
@@ -186,10 +197,10 @@ proc handleFloatRange(f, a: PType): TTypeRelation =
   if a.kind == f.kind: 
     result = isEqual
   else: 
-    var k = skipTypes(a, {tyRange}).kind
+    let ab = skipTypes(a, {tyRange})
-    if k == f.kind: result = isSubtype
+    var k = ab.kind
-    elif k == tyInt and f.kind >= tyFloat and f.kind <= tyFloat128:
+    if k == f.kind: result = isSubrange
-      result = isIntConv
+    elif isIntLit(ab): result = isConvertible
     elif k >= tyFloat and k <= tyFloat128: result = isConvertible
     else: result = isNone
   
@@ -229,7 +240,7 @@ proc tupleRel(mapping: var TIdTable, f, a: PType): TTypeRelation =
 proc matchTypeClass(mapping: var TIdTable, f, a: PType): TTypeRelation =
   for i in countup(0, f.sonsLen - 1):
     let son = f.sons[i]
-    var match = son.kind == a.kind
+    var match = son.kind == skipTypes(a, {tyRange}).kind
 
     if not match:
       case son.kind
@@ -585,11 +596,16 @@ proc ParamTypesMatchAux(c: PContext, m: var TCandidate, f, a: PType,
     inc(m.convMatches)
     result = implicitConv(nkHiddenStdConv, f, copyTree(arg), m, c)
   of isIntConv:
+    # too lazy to introduce another ``*matches`` field, so we conflate
+    # ``isIntConv`` and ``isIntLit`` here:
     inc(m.intConvMatches)
     result = implicitConv(nkHiddenStdConv, f, copyTree(arg), m, c)
   of isSubtype: 
     inc(m.subtypeMatches)
     result = implicitConv(nkHiddenSubConv, f, copyTree(arg), m, c)
+  of isSubrange:
+    inc(m.subtypeMatches)
+    result = copyTree(arg)
   of isGeneric:
     inc(m.genericMatches)
     if m.calleeSym != nil and m.calleeSym.kind in {skMacro, skTemplate}:
@@ -601,6 +617,11 @@ proc ParamTypesMatchAux(c: PContext, m: var TCandidate, f, a: PType,
       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 isFromIntLit:
+    # too lazy to introduce another ``*matches`` field, so we conflate
+    # ``isIntConv`` and ``isIntLit`` here:
+    inc(m.intConvMatches, 256)
+    result = implicitConv(nkHiddenStdConv, f, copyTree(arg), m, c)
   of isEqual: 
     inc(m.exactMatches)
     result = copyTree(arg)

compiler/transf.nim

@@ -734,7 +734,6 @@ proc transform(c: PTransf, n: PNode): PTransNode =
   # we inline constants if they are not complex constants:
   if cnst != nil and not dontInlineConstant(n, cnst):
     result = PTransNode(cnst) # do not miss an optimization
-  warnNarrowingConversion(result.pnode)
 
 proc processTransf(context: PPassContext, n: PNode): PNode = 
   # Note: For interactive mode we cannot call 'passes.skipCodegen' and skip

compiler/types.nim

@@ -102,6 +102,9 @@ proc getOrdValue(n: PNode): biggestInt =
     LocalError(n.info, errOrdinalTypeExpected)
     result = 0
 
+proc isIntLit*(t: PType): bool {.inline.} =
+  result = t.n != nil and t.n.kind == nkIntLit
+
 proc isCompatibleToCString(a: PType): bool = 
   if a.kind == tyArray: 
     if (firstOrd(a.sons[0]) == 0) and
@@ -400,8 +403,15 @@ proc TypeToString(typ: PType, prefer: TPreferedDesc = preferName): string =
   result = ""
   if t == nil: return 
   if prefer == preferName and t.sym != nil and sfAnon notin t.sym.flags:
+    if t.kind == tyInt and isIntLit(t):
+      return t.sym.Name.s & "(" & $t.n.intVal & ")"
     return t.sym.Name.s
   case t.Kind
+  of tyInt:
+    if not isIntLit(t):
+      result = typeToStr[t.kind]
+    else:
+      result = "intLit(" & $t.n.intVal & ")"
   of tyGenericBody, tyGenericInst, tyGenericInvokation:
     result = typeToString(t.sons[0]) & '['
     for i in countup(1, sonsLen(t) -1 -ord(t.kind != tyGenericInvokation)):
@@ -536,7 +546,7 @@ proc lastOrd(t: PType): biggestInt =
   of tyUInt8: result = 0xFF
   of tyUInt16: result = 0xFFFF
   of tyUInt32: result = 0xFFFFFFFF
-  of tyUInt64: result = -1
+  of tyUInt64: result = 0x7FFFFFFFFFFFFFFF'i64
   of tyEnum: 
     assert(t.n.sons[sonsLen(t.n) - 1].kind == nkSym)
     result = t.n.sons[sonsLen(t.n) - 1].sym.position

doc/manual.txt

@@ -570,9 +570,67 @@ operation                meaning
 
 `Automatic type conversion`:idx: is performed in expressions where different
 kinds of integer types are used: the smaller type is converted to the larger.
+
+A `narrowing type conversion`:idx: converts a larger to a smaller type (for
+example ``int32 -> int16``. A `widening type conversion`:idx: converts a 
+smaller type to a larger type (for example ``int16 -> int32``). In Nimrod only
+widening type conversion are *implicit*:
+
+.. code-block:: nimrod
+  var myInt16 = 5i16
+  var myInt: int
+  myInt16 + 34     # of type ``int16``
+  myInt16 + myInt  # of type ``int``
+  myInt16 + 2i32   # of type ``int32``
+
+However, ``int`` literals are implicitely convertible to a smaller integer type
+if the literal's value fits this smaller type and such a conversion is less
+expensive than other implicit conversions, so ``myInt16 + 34`` produces 
+an ``int16`` result.
+
 For further details, see `Convertible relation`_.
 
 
+Subrange types
+~~~~~~~~~~~~~~
+A `subrange`:idx: type is a range of values from an ordinal type (the base
+type). To define a subrange type, one must specify it's limiting values: the
+lowest and highest value of the type:
+
+.. code-block:: nimrod
+  type
+    TSubrange = range[0..5]
+
+
+``TSubrange`` is a subrange of an integer which can only hold the values 0
+to 5. Assigning any other value to a variable of type ``TSubrange`` is a
+checked runtime error (or static error if it can be statically
+determined). Assignments from the base type to one of its subrange types
+(and vice versa) are allowed.
+
+A subrange type has the same size as its base type (``int`` in the example).
+
+Nimrod requires `interval arithmetic`:idx: for subrange types over a set
+of built-in operators that involve constants: ``x mod 3`` is of 
+type ``range[0..2]``. The following built-in operators for integers are 
+affected by this rule: ``-``, ``+``, ``*``, ``min``, ``max``, ``succ``,
+``pred``, ``mod``, ``div``, ``and`` (bitwise and). 
+
+Bitwise and only produces a ``range`` if one of its operands is a 
+constant *x* so that (x+1) is a number of two.
+(Bitwise and then behaves as a ``mod`` operation.)
+
+This means that the following code is accepted:
+
+.. code-block:: nimrod
+  case (x and 3) + 7
+  of 7: echo "A"
+  of 8: echo "B"
+  of 9: echo "C"
+  of 10: echo "D"
+  # note: no ``else`` required as (x and 3) + 7 has the type: range[7..10]
+  
+
 Pre-defined floating point types
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -729,26 +787,6 @@ ordinal value and its string value by using a tuple. It is also
 possible to only specify one of them.
 
 
-Subrange types
-~~~~~~~~~~~~~~
-A `subrange`:idx: type is a range of values from an ordinal type (the base
-type). To define a subrange type, one must specify it's limiting values: the
-lowest and highest value of the type:
-
-.. code-block:: nimrod
-  type
-    TSubrange = range[0..5]
-
-
-``TSubrange`` is a subrange of an integer which can only hold the values 0
-to 5. Assigning any other value to a variable of type ``TSubrange`` is a
-checked runtime error (or static error if it can be statically
-determined). Assignments from the base type to one of its subrange types
-(and vice versa) are allowed.
-
-A subrange type has the same size as its base type (``int`` in the example).
-
-
 String type
 ~~~~~~~~~~~
 All string literals are of the type `string`:idx:. A string in Nimrod is very
@@ -1798,7 +1836,9 @@ evaluated and if its value is in a *slicelist* the corresponding statements
 given *slicelist* the ``else`` part is executed. If there is no ``else``
 part and not all possible values that ``expr`` can hold occur in a 
 ``slicelist``, a static error occurs. This holds only for expressions of 
-ordinal types.
+ordinal types. "All possible values" of ``expr`` are determined by ``expr``'s
+type. 
+
 If the expression is not of an ordinal type, and no ``else`` part is
 given, control passes after the ``case`` statement.
 

lib/core/typeinfo.nim

@@ -59,7 +59,7 @@ type
     rawType: PNimType
 
   ppointer = ptr pointer
-  pbyteArray = ptr array[0.. 0xffff, byte]
+  pbyteArray = ptr array[0.. 0xffff, int8]
 
   TGenSeq {.pure.} = object
     len, space: int

lib/impure/db_postgres.nim

@@ -84,7 +84,7 @@ proc setupQuery(db: TDbConn, query: TSqlQuery,
   result = PQExec(db, q)
   if PQresultStatus(result) != PGRES_TUPLES_OK: dbError(db)
   
-proc setRow(res: PPGresult, r: var TRow, line, cols: int) =
+proc setRow(res: PPGresult, r: var TRow, line, cols: int32) =
   for col in 0..cols-1:
     setLen(r[col], 0)
     var x = PQgetvalue(res, line, col)
@@ -96,7 +96,7 @@ iterator FastRows*(db: TDbConn, query: TSqlQuery,
   ## fast, but potenially dangerous: If the for-loop-body executes another
   ## query, the results can be undefined. For Postgres it is safe though.
   var res = setupQuery(db, query, args)
-  var L = int(PQnfields(res))
+  var L = PQnfields(res)
   var result = newRow(L)
   for i in 0..PQntuples(res)-1:
     setRow(res, result, i, L)
@@ -107,7 +107,7 @@ proc getRow*(db: TDbConn, query: TSqlQuery,
              args: openarray[string]): TRow =
   ## retrieves a single row.
   var res = setupQuery(db, query, args)
-  var L = int(PQnfields(res))
+  var L = PQnfields(res)
   result = newRow(L)
   setRow(res, result, 0, L)
   PQclear(res)

lib/impure/db_sqlite.nim

@@ -64,7 +64,7 @@ proc TryExec*(db: TDbConn, query: TSqlQuery,
   ## tries to execute the query and returns true if successful, false otherwise.
   var q = dbFormat(query, args)
   var stmt: sqlite3.PStmt
-  if prepare_v2(db, q, q.len, stmt, nil) == SQLITE_OK:
+  if prepare_v2(db, q, q.len.cint, stmt, nil) == SQLITE_OK:
     if step(stmt) == SQLITE_DONE:
       result = finalize(stmt) == SQLITE_OK
 
@@ -79,9 +79,9 @@ proc newRow(L: int): TRow =
 proc setupQuery(db: TDbConn, query: TSqlQuery, 
                 args: openarray[string]): PStmt = 
   var q = dbFormat(query, args)
-  if prepare_v2(db, q, q.len, result, nil) != SQLITE_OK: dbError(db)
+  if prepare_v2(db, q, q.len.cint, result, nil) != SQLITE_OK: dbError(db)
   
-proc setRow(stmt: PStmt, r: var TRow, cols: int) =
+proc setRow(stmt: PStmt, r: var TRow, cols: cint) =
   for col in 0..cols-1:
     setLen(r[col], column_bytes(stmt, col)) # set capacity
     setLen(r[col], 0)
@@ -94,7 +94,7 @@ iterator FastRows*(db: TDbConn, query: TSqlQuery,
   ## fast, but potenially dangerous: If the for-loop-body executes another
   ## query, the results can be undefined. For Sqlite it is safe though.
   var stmt = setupQuery(db, query, args)
-  var L = int(columnCount(stmt))
+  var L = (columnCount(stmt))
   var result = newRow(L)
   while step(stmt) == SQLITE_ROW: 
     setRow(stmt, result, L)
@@ -105,7 +105,7 @@ proc getRow*(db: TDbConn, query: TSqlQuery,
              args: openarray[string]): TRow =
   ## retrieves a single row.
   var stmt = setupQuery(db, query, args)
-  var L = int(columnCount(stmt))
+  var L = (columnCount(stmt))
   result = newRow(L)
   if step(stmt) == SQLITE_ROW: 
     setRow(stmt, result, L)

lib/impure/graphics.nim

@@ -35,14 +35,15 @@ type
 proc toSdlColor*(c: TColor): Sdl.TColor =
   ## Convert colors.TColor to SDL.TColor
   var x = c.extractRGB  
-  result.r = toU8(x.r)
+  result.r = x.r and 0xff
-  result.g = toU8(x.g)
+  result.g = x.g and 0xff
-  result.b = toU8(x.b)
+  result.b = x.b and 0xff
 
 proc createSdlColor*(sur: PSurface, c: TColor, alpha: int = 0): int32 =
   ## Creates a color using ``sdl.MapRGBA``.
   var x = c.extractRGB
-  return sdl.MapRGBA(sur.s.format, toU8(x.r), toU8(x.g), toU8(x.b), toU8(alpha))
+  return sdl.MapRGBA(sur.s.format, x.r and 0xff, x.g and 0xff, 
+                     x.b and 0xff, alpha and 0xff)
 
 proc toSdlRect*(r: TRect): sdl.TRect =
   ## Convert ``graphics.TRect`` to ``sdl.TRect``.

lib/impure/re.nim

@@ -82,7 +82,7 @@ proc matchOrFind(s: string, pattern: TRegEx, matches: var openarray[string],
                  start, flags: cint): cint =
   var
     rawMatches: array[0..maxSubpatterns * 3 - 1, cint]
-    res = pcre.Exec(pattern.h, pattern.e, s, len(s), start, flags,
+    res = pcre.Exec(pattern.h, pattern.e, s, len(s).cint, start, flags,
       cast[ptr cint](addr(rawMatches)), maxSubpatterns * 3)
   if res < 0'i32: return res
   for i in 1..int(res)-1:
@@ -100,7 +100,7 @@ proc findBounds*(s: string, pattern: TRegEx, matches: var openarray[string],
   ## is written into `matches` and ``(-1,0)`` is returned.
   var
     rawMatches: array[0..maxSubpatterns * 3 - 1, cint]
-    res = pcre.Exec(pattern.h, pattern.e, s, len(s), start, 0'i32,
+    res = pcre.Exec(pattern.h, pattern.e, s, len(s).cint, start, 0'i32,
       cast[ptr cint](addr(rawMatches)), maxSubpatterns * 3)
   if res < 0'i32: return (-1, 0)
   for i in 1..int(res)-1:
@@ -119,7 +119,7 @@ proc findBounds*(s: string, pattern: TRegEx,
   ## ``(-1,0)`` is returned.
   var
     rawMatches: array[0..maxSubpatterns * 3 - 1, cint]
-    res = pcre.Exec(pattern.h, pattern.e, s, len(s), start, 0'i32,
+    res = pcre.Exec(pattern.h, pattern.e, s, len(s).cint, start, 0'i32,
       cast[ptr cint](addr(rawMatches)), maxSubpatterns * 3)
   if res < 0'i32: return (-1, 0)
   for i in 1..int(res)-1:
@@ -135,14 +135,14 @@ proc findBounds*(s: string, pattern: TRegEx,
   ## match, ``(-1,0)`` is returned.
   var
     rawMatches: array[0..3 - 1, cint]
-    res = pcre.Exec(pattern.h, nil, s, len(s), start, 0'i32,
+    res = pcre.Exec(pattern.h, nil, s, len(s).cint, start, 0'i32,
       cast[ptr cint](addr(rawMatches)), 3)
   if res < 0'i32: return (int(res), 0)
   return (int(rawMatches[0]), int(rawMatches[1]-1))
   
 proc matchOrFind(s: string, pattern: TRegEx, start, flags: cint): cint =
   var rawMatches: array [0..maxSubpatterns * 3 - 1, cint]
-  result = pcre.Exec(pattern.h, pattern.e, s, len(s), start, flags,
+  result = pcre.Exec(pattern.h, pattern.e, s, len(s).cint, start, flags,
                     cast[ptr cint](addr(rawMatches)), maxSubpatterns * 3)
   if result >= 0'i32:
     result = rawMatches[1] - rawMatches[0]
@@ -180,7 +180,7 @@ proc find*(s: string, pattern: TRegEx, matches: var openarray[string],
   ## is written into ``matches`` and -1 is returned.
   var
     rawMatches: array[0..maxSubpatterns * 3 - 1, cint]
-    res = pcre.Exec(pattern.h, pattern.e, s, len(s), start, 0'i32,
+    res = pcre.Exec(pattern.h, pattern.e, s, len(s).cint, start, 0'i32,
       cast[ptr cint](addr(rawMatches)), maxSubpatterns * 3)
   if res < 0'i32: return res
   for i in 1..int(res)-1:
@@ -195,7 +195,7 @@ proc find*(s: string, pattern: TRegEx, start = 0): int =
   ## match, -1 is returned.
   var
     rawMatches: array[0..3 - 1, cint]
-    res = pcre.Exec(pattern.h, nil, s, len(s), start, 0'i32,
+    res = pcre.Exec(pattern.h, nil, s, len(s).cint, start, 0'i32,
       cast[ptr cint](addr(rawMatches)), 3)
   if res < 0'i32: return res
   return rawMatches[0]
@@ -205,7 +205,7 @@ iterator findAll*(s: string, pattern: TRegEx, start = 0): string =
   var i = int32(start)
   var rawMatches: array[0..maxSubpatterns * 3 - 1, cint]
   while true:
-    let res = pcre.Exec(pattern.h, pattern.e, s, len(s), i, 0'i32,
+    let res = pcre.Exec(pattern.h, pattern.e, s, len(s).cint, i, 0'i32,
       cast[ptr cint](addr(rawMatches)), maxSubpatterns * 3)
     if res < 0'i32: break
     let a = rawMatches[0]

lib/pure/oids.nim

@@ -53,7 +53,8 @@ proc oidToString*(oid: TOid, str: cstring) =
   str[24] = '\0'
 
 var
-  incr, fuzz: int
+  incr: int 
+  fuzz: int32
 
 proc genOid*(): TOid =
   ## generates a new OID.

lib/pure/osproc.nim

@@ -244,7 +244,7 @@ when defined(Windows) and not defined(useNimRtl):
     var s = PFileHandleStream(s)
     if s.atTheEnd: return 0
     var br: int32
-    var a = winlean.ReadFile(s.handle, buffer, bufLen, br, nil)
+    var a = winlean.ReadFile(s.handle, buffer, bufLen.cint, br, nil)
     # TRUE and zero bytes returned (EOF).
     # TRUE and n (>0) bytes returned (good data).
     # FALSE and bytes returned undefined (system error).
@@ -255,7 +255,7 @@ when defined(Windows) and not defined(useNimRtl):
   proc hsWriteData(s: PStream, buffer: pointer, bufLen: int) =
     var s = PFileHandleStream(s)
     var bytesWritten: int32
-    var a = winlean.writeFile(s.handle, buffer, bufLen, bytesWritten, nil)
+    var a = winlean.writeFile(s.handle, buffer, bufLen.cint, bytesWritten, nil)
     if a == 0: OSError()
 
   proc newFileHandleStream(handle: THandle): PFileHandleStream =
@@ -293,7 +293,7 @@ when defined(Windows) and not defined(useNimRtl):
 
   proc CreatePipeHandles(Rdhandle, WrHandle: var THandle) =
     var piInheritablePipe: TSecurityAttributes
-    piInheritablePipe.nlength = SizeOF(TSecurityAttributes)
+    piInheritablePipe.nlength = SizeOF(TSecurityAttributes).cint
     piInheritablePipe.lpSecurityDescriptor = nil
     piInheritablePipe.Binherithandle = 1
     if CreatePipe(Rdhandle, Wrhandle, piInheritablePipe, 1024) == 0'i32:
@@ -313,7 +313,7 @@ when defined(Windows) and not defined(useNimRtl):
       success: int
       hi, ho, he: THandle
     new(result)
-    SI.cb = SizeOf(SI)
+    SI.cb = SizeOf(SI).cint
     if poParentStreams notin options:
       SI.dwFlags = STARTF_USESTDHANDLES # STARTF_USESHOWWINDOW or
       CreatePipeHandles(SI.hStdInput, HI)
@@ -323,16 +323,16 @@ when defined(Windows) and not defined(useNimRtl):
         HE = HO
       else:
         CreatePipeHandles(HE, Si.hStdError)
-      result.inputHandle = hi
+      result.inputHandle = TFileHandle(hi)
-      result.outputHandle = ho
+      result.outputHandle = TFileHandle(ho)
-      result.errorHandle = he
+      result.errorHandle = TFileHandle(he)
     else:
       SI.hStdError = GetStdHandle(STD_ERROR_HANDLE)
       SI.hStdInput = GetStdHandle(STD_INPUT_HANDLE)
       SI.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE)
-      result.inputHandle = si.hStdInput
+      result.inputHandle = TFileHandle(si.hStdInput)
-      result.outputHandle = si.hStdOutput
+      result.outputHandle = TFileHandle(si.hStdOutput)
-      result.errorHandle = si.hStdError
+      result.errorHandle = TFileHandle(si.hStdError)
 
     var cmdl: cstring
     when false: # poUseShell in options:
@@ -394,7 +394,7 @@ when defined(Windows) and not defined(useNimRtl):
       discard TerminateProcess(p.FProcessHandle, 0)
 
   proc waitForExit(p: PProcess, timeout: int = -1): int =
-    discard WaitForSingleObject(p.FProcessHandle, timeout)
+    discard WaitForSingleObject(p.FProcessHandle, timeout.int32)
 
     var res: int32
     discard GetExitCodeProcess(p.FProcessHandle, res)
@@ -424,7 +424,7 @@ when defined(Windows) and not defined(useNimRtl):
       ProcInfo: TProcessInformation
       process: THandle
       L: int32
-    SI.cb = SizeOf(SI)
+    SI.cb = SizeOf(SI).cint
     SI.hStdError = GetStdHandle(STD_ERROR_HANDLE)
     SI.hStdInput = GetStdHandle(STD_INPUT_HANDLE)
     SI.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE)
@@ -454,7 +454,7 @@ when defined(Windows) and not defined(useNimRtl):
     for i in 0..readfds.len()-1:
       rfds[i] = readfds[i].FProcessHandle
     
-    var ret = waitForMultipleObjects(readfds.len, 
+    var ret = waitForMultipleObjects(readfds.len.int32, 
                                      addr(rfds), 0'i32, timeout)
     case ret
     of WAIT_TIMEOUT:

lib/pure/sockets.nim

@@ -343,7 +343,7 @@ proc bindAddr*(socket: TSocket, port = TPort(0), address = "") =
     name.sin_port = sockets.htons(int16(port))
     name.sin_addr.s_addr = sockets.htonl(INADDR_ANY)
     if bindSocket(socket.fd, cast[ptr TSockAddr](addr(name)),
-                  sizeof(name)) < 0'i32:
+                  sizeof(name).TSockLen) < 0'i32:
       OSError()
   else:
     var hints: TAddrInfo
@@ -366,7 +366,7 @@ when false:
     name.sin_port = sockets.htons(int16(port))
     name.sin_addr.s_addr = sockets.htonl(INADDR_ANY)
     if bindSocket(cint(socket), cast[ptr TSockAddr](addr(name)),
-                  sizeof(name)) < 0'i32:
+                  sizeof(name).TSockLen) < 0'i32:
       OSError()
   
 proc getSockName*(socket: TSocket): TPort = 
@@ -378,7 +378,7 @@ proc getSockName*(socket: TSocket): TPort =
     name.sin_family = posix.AF_INET
   #name.sin_port = htons(cint16(port))
   #name.sin_addr.s_addr = htonl(INADDR_ANY)
-  var namelen: cint = sizeof(name)
+  var namelen = sizeof(name).TSockLen
   if getsockname(socket.fd, cast[ptr TSockAddr](addr(name)),
                  addr(namelen)) == -1'i32:
     OSError()
@@ -398,7 +398,7 @@ proc acceptAddr*(server: TSocket): tuple[client: TSocket, address: string] =
   ## **Warning:** This function might block even if socket is non-blocking
   ## when using SSL.
   var sockAddress: Tsockaddr_in
-  var addrLen: cint = sizeof(sockAddress)
+  var addrLen = sizeof(sockAddress).TSockLen
   var sock = accept(server.fd, cast[ptr TSockAddr](addr(sockAddress)),
                     addr(addrLen))
   
@@ -477,9 +477,9 @@ proc getServByName*(name, proto: string): TServent =
 proc getServByPort*(port: TPort, proto: string): TServent = 
   ## well-known getservbyport proc.
   when defined(Windows):
-    var s = winlean.getservbyport(ze(int16(port)), proto)
+    var s = winlean.getservbyport(ze(int16(port)).cint, proto)
   else:
-    var s = posix.getservbyport(ze(int16(port)), proto)
+    var s = posix.getservbyport(ze(int16(port)).cint, proto)
   if s == nil: OSError()
   result.name = $s.s_name
   result.aliases = cstringArrayToSeq(s.s_aliases)
@@ -492,11 +492,11 @@ proc getHostByAddr*(ip: string): THostEnt =
   myaddr.s_addr = inet_addr(ip)
   
   when defined(windows):
-    var s = winlean.gethostbyaddr(addr(myaddr), sizeof(myaddr),
+    var s = winlean.gethostbyaddr(addr(myaddr), sizeof(myaddr).cint,
                                   cint(sockets.AF_INET))
     if s == nil: OSError()
   else:
-    var s = posix.gethostbyaddr(addr(myaddr), sizeof(myaddr), 
+    var s = posix.gethostbyaddr(addr(myaddr), sizeof(myaddr).cint, 
                                 cint(posix.AF_INET))
     if s == nil:
       raise newException(EOS, $hStrError(h_errno))
@@ -539,7 +539,7 @@ proc getHostByName*(name: string): THostEnt =
 proc getSockOptInt*(socket: TSocket, level, optname: int): int = 
   ## getsockopt for integer options.
   var res: cint
-  var size: cint = sizeof(res)
+  var size = sizeof(res).cint
   if getsockopt(socket.fd, cint(level), cint(optname), 
                 addr(res), addr(size)) < 0'i32:
     OSError()
@@ -549,7 +549,7 @@ proc setSockOptInt*(socket: TSocket, level, optname, optval: int) =
   ## setsockopt for integer options.
   var value = cint(optval)
   if setsockopt(socket.fd, cint(level), cint(optname), addr(value),  
-                sizeof(value)) < 0'i32:
+                sizeof(value).cint) < 0'i32:
     OSError()
 
 proc connect*(socket: TSocket, name: string, port = TPort(0), 
@@ -608,7 +608,7 @@ proc connect*(socket: TSocket, name: string, port = TPort(0),
       of AF_INET: s.sin_family = posix.AF_INET
       of AF_INET6: s.sin_family = posix.AF_INET6
       else: nil
-    if connect(socket.fd, cast[ptr TSockAddr](addr(s)), sizeof(s)) < 0'i32:
+    if connect(socket.fd, cast[ptr TSockAddr](addr(s)), sizeof(s).cint) < 0'i32:
       OSError()
 
 proc connectAsync*(socket: TSocket, name: string, port = TPort(0),

lib/pure/times.nim

@@ -111,7 +111,7 @@ type
                               ## in the range 0 to 23.
     monthday*: range[1..31]   ## The day of the month, in the range 1 to 31.
     month*: TMonth            ## The current month.
-    year*: int                ## The current year.
+    year*: range[-10_000..10_000] ## The current year.
     weekday*: TWeekDay        ## The current day of the week.
     yearday*: range[0..365]   ## The number of days since January 1,
                               ## in the range 0 to 365.
@@ -122,7 +122,7 @@ type
     timezone*: int            ## The offset of the (non-DST) timezone in seconds
                               ## west of UTC.
 
-  TTimeInterval* = object
+  TTimeInterval* {.pure.} = object ## a time interval
     miliseconds*: int ## The number of miliseconds
     seconds*: int     ## The number of seconds
     minutes*: int     ## The number of minutes
@@ -175,7 +175,7 @@ proc getStartMilsecs*(): int {.deprecated.}
   ## get the miliseconds from the start of the program. **Deprecated since
   ## version 0.8.10.** Use ``epochTime`` or ``cpuTime`` instead.
 
-proc newInterval*(miliseconds, seconds, minutes, hours, days, months, 
+proc initInterval*(miliseconds, seconds, minutes, hours, days, months, 
                    years: int = 0): TTimeInterval =
   ## creates a new ``TTimeInterval``.
   result.miliseconds = miliseconds
@@ -198,12 +198,9 @@ proc isLeapYear(year: int): bool =
 
 proc getDaysInMonth(month: TMonth, year: int): int =
   # http://www.dispersiondesign.com/articles/time/number_of_days_in_a_month
-  if month == mFeb: # Feb
+  case month 
-    if isLeapYear(year):
+  of mFeb: result = if isLeapYear(year): 29 else: 28
-      result = 29
+  of mApr, mJun, mSep, mNov: result = 30
-    else:
-      result = 28
-  elif month in [mApr, mJun, mSep, mNov]: result = 30
   else: result = 31
 
 proc calculateSeconds(a: TTimeInfo, interval: TTimeInterval): float =
@@ -228,9 +225,10 @@ proc calculateSeconds(a: TTimeInfo, interval: TTimeInterval): float =
 proc `+`*(a: TTimeInfo, interval: TTimeInterval): TTimeInfo =
   ## adds ``interval`` time.
   ##
-  ## **Note:** This has been only briefly tested and it may not be very accurate.
+  ## **Note:** This has been only briefly tested and it may not be
+  ## very accurate.
   let t = timeInfoToTime(a)
-  var secs = calculateSeconds(a, interval)
+  let secs = calculateSeconds(a, interval)
   if a.tzname == "UTC":
     result = getGMTime(TTime(float(t) + secs))
   else:
@@ -242,7 +240,7 @@ proc `-`*(a: TTimeInfo, interval: TTimeInterval): TTimeInfo =
   ## **Note:** This has been only briefly tested, it is inaccurate especially
   ## when you subtract so much that you reach the Julian calendar.
   let t = timeInfoToTime(a)
-  var secs = calculateSeconds(a, interval)
+  let secs = calculateSeconds(a, interval)
   if a.tzname == "UTC":
     result = getGMTime(TTime(float(t) - secs))
   else:
@@ -329,7 +327,7 @@ when not defined(ECMAScript):
   
   proc timeInfoToTM(t: TTimeInfo): structTM =
     const
-      weekDays: array [TWeekDay, int] = [1, 2, 3, 4, 5, 6, 0]
+      weekDays: array [TWeekDay, int8] = [1'i8,2'i8,3'i8,4'i8,5'i8,6'i8,0'i8]
     result.second = t.second
     result.minute = t.minute
     result.hour = t.hour
@@ -362,13 +360,13 @@ when not defined(ECMAScript):
     var a = t
     result = tmToTimeInfo(localtime(addr(a))[], true)
     # copying is needed anyway to provide reentrancity; thus
-    # the convertion is not expensive
+    # the conversion is not expensive
   
   proc getGMTime(t: TTime): TTimeInfo =
     var a = t
     result = tmToTimeInfo(gmtime(addr(a))[], false)
     # copying is needed anyway to provide reentrancity; thus
-    # the convertion is not expensive
+    # the conversion is not expensive
   
   proc TimeInfoToTime(timeInfo: TTimeInfo): TTime =
     var cTimeInfo = timeInfo # for C++ we have to make a copy,

lib/system.nim

@@ -182,7 +182,7 @@ when not defined(EcmaScript) and not defined(NimrodVM):
   include "system/hti"
 
 type
-  Byte* = Int8 ## this is an alias for ``int8``, that is a signed
+  Byte* = uInt8 ## this is an alias for ``uint8``, that is an unsigned
                 ## int 8 bits wide.
 
   Natural* = range[0..high(int)]
@@ -967,7 +967,7 @@ type
 type # these work for most platforms:
   cchar* {.importc: "char", nodecl.} = char
     ## This is the same as the type ``char`` in *C*.
-  cschar* {.importc: "signed char", nodecl.} = byte
+  cschar* {.importc: "signed char", nodecl.} = int8
     ## This is the same as the type ``signed char`` in *C*.
   cshort* {.importc: "short", nodecl.} = int16
     ## This is the same as the type ``short`` in *C*.
@@ -1156,6 +1156,10 @@ proc `$` *(x: int64): string {.magic: "Int64ToStr", noSideEffect.}
   ## The stingify operator for an integer argument. Returns `x`
   ## converted to a decimal string.
 
+proc `$` *(x: uint64): string {.noSideEffect.}
+  ## The stingify operator for an unsigned integer argument. Returns `x`
+  ## converted to a decimal string.
+
 proc `$` *(x: float): string {.magic: "FloatToStr", noSideEffect.}
   ## The stingify operator for a float argument. Returns `x`
   ## converted to a decimal string.
@@ -1177,7 +1181,7 @@ proc `$` *(x: string): string {.magic: "StrToStr", noSideEffect.}
   ## as it is. This operator is useful for generic code, so
   ## that ``$expr`` also works if ``expr`` is already a string.
 
-proc `$` *[T](x: ordinal[T]): string {.magic: "EnumToStr", noSideEffect.}
+proc `$` *[TEnum: enum](x: TEnum): string {.magic: "EnumToStr", noSideEffect.}
   ## The stingify operator for an enumeration argument. This works for
   ## any enumeration type thanks to compiler magic. If
   ## a ``$`` operator for a concrete enumeration is provided, this is
@@ -1850,7 +1854,7 @@ when not defined(EcmaScript) and not defined(NimrodVM):
   proc getFileSize*(f: TFile): int64
     ## retrieves the file size (in bytes) of `f`.
 
-  proc ReadBytes*(f: TFile, a: var openarray[byte], start, len: int): int
+  proc ReadBytes*(f: TFile, a: var openarray[int8], start, len: int): int
     ## reads `len` bytes into the buffer `a` starting at ``a[start]``. Returns
     ## the actual number of bytes that have been read which may be less than
     ## `len` (if not as many bytes are remaining), but not greater.
@@ -1865,7 +1869,7 @@ when not defined(EcmaScript) and not defined(NimrodVM):
     ## the actual number of bytes that have been read which may be less than
     ## `len` (if not as many bytes are remaining), but not greater.
 
-  proc writeBytes*(f: TFile, a: openarray[byte], start, len: int): int
+  proc writeBytes*(f: TFile, a: openarray[int8], start, len: int): int
     ## writes the bytes of ``a[start..start+len-1]`` to the file `f`. Returns
     ## the number of actual written bytes, which may be less than `len` in case
     ## of an error.

lib/system/ansi_c.nim

@@ -71,7 +71,8 @@ proc c_fopen(filename, mode: cstring): C_TextFileStar {.
   importc: "fopen", nodecl.}
 proc c_fclose(f: C_TextFileStar) {.importc: "fclose", nodecl.}
 
-proc c_sprintf(buf, frmt: CString) {.nodecl, importc: "sprintf", varargs.}
+proc c_sprintf(buf, frmt: CString) {.nodecl, importc: "sprintf", varargs,
+                                     noSideEffect.}
   # we use it only in a way that cannot lead to security issues
 
 proc c_fread(buf: Pointer, size, n: int, f: C_BinaryFileStar): int {.

lib/system/repr.nim

@@ -20,6 +20,11 @@ proc reprPointer(x: pointer): string {.compilerproc.} =
   c_sprintf(buf, "%p", x)
   return $buf
 
+proc `$`(x: uint64): string =
+  var buf: array [0..59, char]
+  c_sprintf(buf, "%llu", x)
+  return $buf
+
 proc reprStrAux(result: var string, s: string) =
   if cast[pointer](s) == nil:
     add result, "nil"
@@ -67,7 +72,7 @@ proc reprEnum(e: int, typ: PNimType): string {.compilerRtl.} =
   result = $e & " (invalid data!)"
 
 type
-  pbyteArray = ptr array[0.. 0xffff, byte]
+  pbyteArray = ptr array[0.. 0xffff, int8]
 
 proc addSetElem(result: var string, elem: int, typ: PNimType) =
   case typ.kind

lib/system/sysio.nim

@@ -222,17 +222,17 @@ proc fwrite(buf: Pointer, size, n: int, f: TFile): int {.
 proc readBuffer(f: TFile, buffer: pointer, len: int): int =
   result = fread(buffer, 1, len, f)
 
-proc ReadBytes(f: TFile, a: var openarray[byte], start, len: int): int =
+proc ReadBytes(f: TFile, a: var openarray[int8], start, len: int): int =
   result = readBuffer(f, addr(a[start]), len)
 
 proc ReadChars(f: TFile, a: var openarray[char], start, len: int): int =
   result = readBuffer(f, addr(a[start]), len)
 
-proc writeBytes(f: TFile, a: openarray[byte], start, len: int): int =
+proc writeBytes(f: TFile, a: openarray[int8], start, len: int): int =
-  var x = cast[ptr array[0..1000_000_000, byte]](a)
+  var x = cast[ptr array[0..1000_000_000, int8]](a)
   result = writeBuffer(f, addr(x[start]), len)
 proc writeChars(f: TFile, a: openarray[char], start, len: int): int =
-  var x = cast[ptr array[0..1000_000_000, byte]](a)
+  var x = cast[ptr array[0..1000_000_000, int8]](a)
   result = writeBuffer(f, addr(x[start]), len)
 proc writeBuffer(f: TFile, buffer: pointer, len: int): int =
   result = fwrite(buffer, 1, len, f)

lib/windows/windows.nim

@@ -13,8 +13,8 @@
 {.deadCodeElim: on.}
 
 type
-  WideChar* = int16
+  WideChar* = uint16
-  PWideChar* = ptr int16
+  PWideChar* = ptr uint16
 
 type  # WinNT.h -- Defines the 32-Bit Windows types and constants
   SHORT* = int16
@@ -72,7 +72,6 @@ type  # WinDef.h -- Basic Windows Type Definitions
 
   DWORD* = int32
   WINBOOL* = int32
-  BYTE* = char
   WORD* = int16
   # FLOAT* = float
   PFLOAT* = ptr FLOAT
@@ -296,13 +295,13 @@ type
 
 when defined(winUnicode):
   type
-    PTBYTE* = ptr int16
+    PTBYTE* = ptr uint16
     PTCH* = PWideChar
     PTCHAR* = PWideChar
     PTSTR* = PWideChar
 else:
   type
-    PTBYTE* = ptr int8
+    PTBYTE* = ptr byte
     PTCH* = cstring
     PTCHAR* = cstring
     PTSTR* = cstring
@@ -316,12 +315,12 @@ type
 
 when defined(winUnicode):
   type
-    TBYTE* = int16
+    TBYTE* = uint16
     TCHAR* = widechar
     BCHAR* = int16
 else:
   type
-    TBYTE* = int8
+    TBYTE* = uint8
     TCHAR* = char
     BCHAR* = int8
 type
@@ -7432,34 +7431,34 @@ type
   PDCB* = ptr DCB
 
 const
-  bm_DCB_fBinary* = 0x00000001
+  bm_DCB_fBinary* = 1
-  bp_DCB_fBinary* = 0
+  bp_DCB_fBinary* = 0'i32
   bm_DCB_fParity* = 0x00000002
-  bp_DCB_fParity* = 1
+  bp_DCB_fParity* = 1'i32
   bm_DCB_fOutxCtsFlow* = 0x00000004
-  bp_DCB_fOutxCtsFlow* = 2
+  bp_DCB_fOutxCtsFlow* = 2'i32
   bm_DCB_fOutxDsrFlow* = 0x00000008
-  bp_DCB_fOutxDsrFlow* = 3
+  bp_DCB_fOutxDsrFlow* = 3'i32
   bm_DCB_fDtrControl* = 0x00000030
-  bp_DCB_fDtrControl* = 4
+  bp_DCB_fDtrControl* = 4'i32
   bm_DCB_fDsrSensitivity* = 0x00000040
-  bp_DCB_fDsrSensitivity* = 6
+  bp_DCB_fDsrSensitivity* = 6'i32
   bm_DCB_fTXContinueOnXoff* = 0x00000080
-  bp_DCB_fTXContinueOnXoff* = 7
+  bp_DCB_fTXContinueOnXoff* = 7'i32
   bm_DCB_fOutX* = 0x00000100
-  bp_DCB_fOutX* = 8
+  bp_DCB_fOutX* = 8'i32
   bm_DCB_fInX* = 0x00000200
-  bp_DCB_fInX* = 9
+  bp_DCB_fInX* = 9'i32
   bm_DCB_fErrorChar* = 0x00000400
-  bp_DCB_fErrorChar* = 10
+  bp_DCB_fErrorChar* = 10'i32
   bm_DCB_fNull* = 0x00000800
-  bp_DCB_fNull* = 11
+  bp_DCB_fNull* = 11'i32
   bm_DCB_fRtsControl* = 0x00003000
-  bp_DCB_fRtsControl* = 12
+  bp_DCB_fRtsControl* = 12'i32
   bm_DCB_fAbortOnError* = 0x00004000
-  bp_DCB_fAbortOnError* = 14
+  bp_DCB_fAbortOnError* = 14'i32
   bm_DCB_fDummy2* = 0xFFFF8000'i32
-  bp_DCB_fDummy2* = 15
+  bp_DCB_fDummy2* = 15'i32
 
 proc fBinary*(a: var DCB): DWORD
 proc set_fBinary*(a: var DCB, fBinary: DWORD)
@@ -7575,21 +7574,21 @@ type
 
 const
   bm_COMSTAT_fCtsHold* = 0x00000001
-  bp_COMSTAT_fCtsHold* = 0
+  bp_COMSTAT_fCtsHold* = 0'i32
   bm_COMSTAT_fDsrHold* = 0x00000002
-  bp_COMSTAT_fDsrHold* = 1
+  bp_COMSTAT_fDsrHold* = 1'i32
   bm_COMSTAT_fRlsdHold* = 0x00000004
-  bp_COMSTAT_fRlsdHold* = 2
+  bp_COMSTAT_fRlsdHold* = 2'i32
   bm_COMSTAT_fXoffHold* = 0x00000008
-  bp_COMSTAT_fXoffHold* = 3
+  bp_COMSTAT_fXoffHold* = 3'i32
   bm_COMSTAT_fXoffSent* = 0x00000010
-  bp_COMSTAT_fXoffSent* = 4
+  bp_COMSTAT_fXoffSent* = 4'i32
   bm_COMSTAT_fEof* = 0x00000020
-  bp_COMSTAT_fEof* = 5
+  bp_COMSTAT_fEof* = 5'i32
   bm_COMSTAT_fTxim* = 0x00000040
-  bp_COMSTAT_fTxim* = 6
+  bp_COMSTAT_fTxim* = 6'i32
   bm_COMSTAT_fReserved* = 0xFFFFFF80'i32
-  bp_COMSTAT_fReserved* = 7
+  bp_COMSTAT_fReserved* = 7'i32
 
 proc fCtsHold*(a: var COMSTAT): DWORD
   # should be renamed to get_<x>?
@@ -9984,25 +9983,25 @@ type
 
 const
   bm_LDT_ENTRY_BaseMid* = 0x000000FF
-  bp_LDT_ENTRY_BaseMid* = 0
+  bp_LDT_ENTRY_BaseMid* = 0'i32
   bm_LDT_ENTRY_Type* = 0x00001F00
-  bp_LDT_ENTRY_Type* = 8
+  bp_LDT_ENTRY_Type* = 8'i32
   bm_LDT_ENTRY_Dpl* = 0x00006000
-  bp_LDT_ENTRY_Dpl* = 13
+  bp_LDT_ENTRY_Dpl* = 13'i32
   bm_LDT_ENTRY_Pres* = 0x00008000
-  bp_LDT_ENTRY_Pres* = 15
+  bp_LDT_ENTRY_Pres* = 15'i32
   bm_LDT_ENTRY_LimitHi* = 0x000F0000
-  bp_LDT_ENTRY_LimitHi* = 16
+  bp_LDT_ENTRY_LimitHi* = 16'i32
   bm_LDT_ENTRY_Sys* = 0x00100000
-  bp_LDT_ENTRY_Sys* = 20
+  bp_LDT_ENTRY_Sys* = 20'i32
   bm_LDT_ENTRY_Reserved_0* = 0x00200000
-  bp_LDT_ENTRY_Reserved_0* = 21
+  bp_LDT_ENTRY_Reserved_0* = 21'i32
   bm_LDT_ENTRY_Default_Big* = 0x00400000
-  bp_LDT_ENTRY_Default_Big* = 22
+  bp_LDT_ENTRY_Default_Big* = 22'i32
   bm_LDT_ENTRY_Granularity* = 0x00800000
-  bp_LDT_ENTRY_Granularity* = 23
+  bp_LDT_ENTRY_Granularity* = 23'i32
   bm_LDT_ENTRY_BaseHi* = 0xFF000000
-  bp_LDT_ENTRY_BaseHi* = 24
+  bp_LDT_ENTRY_BaseHi* = 24'i32
 
 type
   LOCALESIGNATURE* {.final, pure.} = object
@@ -22820,7 +22819,7 @@ proc SEXT_HIWORD*(L: int32): int32 =
 
 proc ZEXT_HIWORD*(L: int32): int32 =
   # return type might be wrong
-  result = ze(HIWORD(L))
+  result = HIWORD(L) and 0xffff'i32
 
 proc SEXT_LOWORD*(L: int32): int32 =
   result = LOWORD(L)
@@ -22869,13 +22868,13 @@ proc MAKEWPARAM*(L, h: int32): WPARAM =
   result = WPARAM(MAKELONG(L, h))
 
 proc GET_X_LPARAM*(lp: Windows.LParam): int32 =
-  result = int16(LOWORD(lp))
+  result = LOWORD(lp.int32)
 
 proc GET_Y_LPARAM*(lp: Windows.LParam): int32 =
-  result = int16(HIWORD(lp))
+  result = HIWORD(lp.int32)
 
 proc UNICODE_NULL*(): WCHAR =
-  result = 0'i16
+  result = 0'u16
 
 
 
@@ -23500,7 +23499,8 @@ proc ListView_EnsureVisible(hwndLV: HWND, i, fPartialOK: int32): LRESULT =
                        MAKELPARAM(fPartialOK, 0))
 
 proc ListView_FindItem(wnd: HWND, iStart: int32, lvfi: var LV_FINDINFO): int32 =
-  result = SendMessage(wnd, LVM_FINDITEM, WPARAM(iStart), cast[LPARAM](addr(lvfi)))
+  result = SendMessage(wnd, LVM_FINDITEM, WPARAM(iStart), 
+                       cast[LPARAM](addr(lvfi))).int32
 
 proc ListView_GetBkColor(wnd: HWND): LRESULT =
   result = SendMessage(wnd, LVM_GETBKCOLOR, 0, 0)
@@ -23534,7 +23534,7 @@ proc ListView_GetItemCount(wnd: HWND): LRESULT =
 
 proc ListView_GetItemPosition(hwndLV: HWND, i: int32, pt: var POINT): int32 =
   result = SendMessage(hwndLV, LVM_GETITEMPOSITION, WPARAM(int32(i)),
-                       cast[LPARAM](addr(pt)))
+                       cast[LPARAM](addr(pt))).int32
 
 proc ListView_GetItemSpacing(hwndLV: HWND, fSmall: int32): LRESULT =
   result = SendMessage(hwndLV, LVM_GETITEMSPACING, fSmall, 0)
@@ -23878,10 +23878,10 @@ proc GetLargestConsoleWindowSize(hConsoleOutput: HANDLE): COORD =
   result.x = toU16(res shr 16)
 
 proc Succeeded(Status: HRESULT): WINBOOL =
-  result = (Status and 0x80000000'i32)
+  result = (Status and 0x80000000).WinBool
 
 proc Failed(Status: HRESULT): WINBOOL =
-  result = (Status and 0x80000000'i32)
+  result = (Status and 0x80000000).WinBool
 
 proc IsError(Status: HRESULT): WINBOOL =
   result = ord((int(Status) shr 31) == SEVERITY_ERROR)
@@ -23920,7 +23920,7 @@ proc MAKELCID(LangId, SortId: int16): DWORD =
   result = toU32((ze(SortId) shl 16) or ze(LangId))
 
 proc MAKESORTLCID(LangId, SortId, SortVersion: int16): DWORD =
-  result = MAKELCID(LangId, SortId) or int(SortVersion shl 20'i32)
+  result = MAKELCID(LangId, SortId) or (SortVersion shl 20'i32)
 
 proc LANGIDFROMLCID(LocaleId: LCID): int16 =
   result = toU16(LocaleId)

lib/wrappers/gtk/gtk2.nim

@@ -16257,7 +16257,7 @@ proc COLUMN_REQUESTED_WIDTH*(column: PTreeViewColumn): int32 =
     MaxWidth = column.max_width
   else: 
     MaxWidth = column.requested_width
-  result = CLAMP(column.requested_width, MinWidth, MaxWidth)
+  result = CLAMP(column.requested_width, MinWidth, MaxWidth).int32
 
 proc DRAW_EXPANDERS*(tree_view: PTreeView): bool = 
   result = (not (FLAG_SET(tree_view, TREE_VIEW_IS_LIST))) and

lib/wrappers/gtk/pango.nim

@@ -878,10 +878,10 @@ proc get_tab*(tab_array: PTabArray, tab_index: gint,
 proc get_positions_in_pixels*(tab_array: PTabArray): gboolean{.cdecl, 
     dynlib: lib, importc: "pango_tab_array_get_positions_in_pixels".}
 proc ASCENT*(rect: TRectangle): int32 = 
-  result = - int(rect.y)
+  result = -rect.y
 
 proc DESCENT*(rect: TRectangle): int32 = 
-  result = int(rect.y) + int(rect.height)
+  result = (rect.y) + (rect.height)
 
 proc LBEARING*(rect: TRectangle): int32 = 
   result = rect.x

lib/wrappers/sdl/sdl.nim

@@ -280,9 +280,9 @@ else:
   const 
     LibName = "libSDL.so(|.1|.0)"
 const 
-  MAJOR_VERSION* = 1'i8
+  MAJOR_VERSION* = 1
-  MINOR_VERSION* = 2'i8
+  MINOR_VERSION* = 2
-  PATCHLEVEL* = 11'i8         # SDL.h constants
+  PATCHLEVEL* = 11         # SDL.h constants
   INIT_TIMER* = 0x00000001
   INIT_AUDIO* = 0x00000010
   INIT_VIDEO* = 0x00000020

lib/wrappers/sdl/sdl_image.nim

@@ -141,9 +141,9 @@ else:
   const 
     ImageLibName = "libSDL_image.so"
 const 
-  IMAGE_MAJOR_VERSION* = 1'i8
+  IMAGE_MAJOR_VERSION* = 1
-  IMAGE_MINOR_VERSION* = 2'i8
+  IMAGE_MINOR_VERSION* = 2
-  IMAGE_PATCHLEVEL* = 5'i8
+  IMAGE_PATCHLEVEL* = 5
 
 # This macro can be used to fill a version structure with the compile-time
 #  version of the SDL_image library. 

lib/wrappers/sdl/sdl_mixer.nim

@@ -161,9 +161,9 @@ else:
   const 
     MixerLibName = "libSDL_mixer.so"
 const 
-  MAJOR_VERSION* = 1'i8
+  MAJOR_VERSION* = 1
-  MINOR_VERSION* = 2'i8
+  MINOR_VERSION* = 2
-  PATCHLEVEL* = 7'i8    # Backwards compatibility
+  PATCHLEVEL* = 7    # Backwards compatibility
   
   CHANNELS* = 8           # Good default values for a PC soundcard
   DEFAULT_FREQUENCY* = 22050

lib/wrappers/sdl/sdl_mixer_nosmpeg.nim

@@ -15,9 +15,9 @@ else:
   const 
     MixerLibName = "libSDL_mixer.so"
 const 
-  MAJOR_VERSION* = 1'i8
+  MAJOR_VERSION* = 1
-  MINOR_VERSION* = 2'i8
+  MINOR_VERSION* = 2
-  PATCHLEVEL* = 7'i8    # Backwards compatibility
+  PATCHLEVEL* = 7    # Backwards compatibility
    
   CHANNELS* = 8           # Good default values for a PC soundcard 
   DEFAULT_FREQUENCY* = 22050

lib/wrappers/sdl/sdl_net.nim

@@ -122,9 +122,9 @@ else:
   const 
     NetLibName = "libSDL_net.so"
 const                         #* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL *
-  MAJOR_VERSION* = 1'i8
+  MAJOR_VERSION* = 1
-  MINOR_VERSION* = 2'i8
+  MINOR_VERSION* = 2
-  PATCHLEVEL* = 5'i8     # SDL_Net.h constants
+  PATCHLEVEL* = 5        # SDL_Net.h constants
                          #* Resolve a host name and port to an IP address in network form.
                          #   If the function succeeds, it will return 0.
                          #   If the host couldn't be resolved, the host portion of the returned

lib/wrappers/sdl/sdl_ttf.nim

@@ -165,9 +165,9 @@ else:
   const 
     ttfLibName = "libSDL_ttf.so(|.1|.0)"
 const 
-  MAJOR_VERSION* = 2'i8
+  MAJOR_VERSION* = 2
-  MINOR_VERSION* = 0'i8
+  MINOR_VERSION* = 0
-  PATCHLEVEL* = 8'i8      # Backwards compatibility
+  PATCHLEVEL* = 8      # Backwards compatibility
 
   STYLE_NORMAL* = 0x00000000
   STYLE_BOLD* = 0x00000001

lib/wrappers/sdl/smpeg.nim

@@ -171,9 +171,9 @@ proc filter_deblocking*(): PFilter{.cdecl,
   # SMPEG.h
   #------------------------------------------------------------------------------
 const 
-  MAJOR_VERSION* = 0'i8
+  MAJOR_VERSION* = 0
-  MINOR_VERSION* = 4'i8
+  MINOR_VERSION* = 4
-  PATCHLEVEL* = 2'i8
+  PATCHLEVEL* = 2
 
 type 
   TVersion*{.final.} = object 

lib/wrappers/zip/zlib.nim

@@ -160,19 +160,20 @@ proc inflateSyncPoint*(z: PZstream): int32{.cdecl, dynlib: libz,
 proc get_crc_table*(): pointer{.cdecl, dynlib: libz, importc: "get_crc_table".}
 
 proc deflateInit(strm: var TZStream, level: int32): int32 = 
-  result = deflateInitu(strm, level, ZLIB_VERSION(), sizeof(TZStream))
+  result = deflateInitu(strm, level, ZLIB_VERSION(), sizeof(TZStream).cint)
 
 proc inflateInit(strm: var TZStream): int32 = 
-  result = inflateInitu(strm, ZLIB_VERSION(), sizeof(TZStream))
+  result = inflateInitu(strm, ZLIB_VERSION(), sizeof(TZStream).cint)
 
 proc deflateInit2(strm: var TZStream, 
                   level, `method`, windowBits, memLevel,
                   strategy: int32): int32 = 
   result = deflateInit2u(strm, level, `method`, windowBits, memLevel, 
-                         strategy, ZLIB_VERSION(), sizeof(TZStream))
+                         strategy, ZLIB_VERSION(), sizeof(TZStream).cint)
 
 proc inflateInit2(strm: var TZStream, windowBits: int32): int32 = 
-  result = inflateInit2u(strm, windowBits, ZLIB_VERSION(), sizeof(TZStream))
+  result = inflateInit2u(strm, windowBits, ZLIB_VERSION(), 
+                         sizeof(TZStream).cint)
 
 proc zlibAllocMem*(AppData: Pointer, Items, Size: int): Pointer {.cdecl.} = 
   result = Alloc(Items * Size)

tests/compile/tnewlibs.nim

@@ -10,7 +10,7 @@ import
   osproc,
   cairowin32, cairoxlib,
   gl, glut, glu, glx, glext, wingl,
-  lua, lualib, lauxlib, mysql, sqlite3, 
+  lua, lualib, lauxlib, mysql, sqlite3, db_mongo
   
 
 writeln(stdout, "test compilation of binding modules")

todo.txt

@@ -1,12 +1,11 @@
 version 0.9.0
 =============
 
+- deprecate ``var x, y = 0`` as it's confusing for tuple consistency
 - finish support for unsigned ints:
-  - document new type conversion rules
+  - support more unsigned operations
   - test codegen
-  - provide ``$`` for unsigned ints
 
-Debug GC session:
 - test sequence of closures; especially that the GC does not leak for those!
 
 New pragmas:
@@ -15,8 +14,6 @@ New pragmas:
 - document destructors
 
 - ``borrow`` needs to take type classes into account
-- make templates hygienic by default: try to gensym() everything in the 'block'
-  of a template; find a better solution for gensym instead of `*ident`
 - introduce ``;`` to the parser
 - make use of ``tyIter`` to fix the implicit items/pairs issue
 - ``=`` should be overloadable; requires specialization for ``=``
@@ -50,7 +47,10 @@ version 0.9.XX
   - document it
   - fix exception handling
 
+- make templates hygienic by default: try to gensym() everything in the 'block'
+  of a template; find a better solution for gensym instead of `*ident`
 - document nimdoc properly finally
+- make 'clamp' a magic for the range stuff
 - implement a warning message for shadowed 'result' variable
 - implement the high level optimizer
 - change overloading resolution
@@ -101,7 +101,7 @@ Library
     newSeq(result, a.len)
     for i in 0..a.len-1: result[i] = a[i]
     
-  --> ensure @[] calls the array version!
+  --> ensure @[] still calls the array version!
 
 
 Low priority
@@ -147,7 +147,6 @@ Further optimization ideas
 Version 2 and beyond
 ====================
 
-
 - shared memory heap: ``shared ref`` etc. The only hard part in the GC is to
   "stop the world". However, it may be worthwhile to generate explicit 
   (or implicit) syncGC() calls in loops. Automatic loop injection seems

web/news.txt

@@ -87,7 +87,11 @@ Changes affecting backwards compatibility
 - Deprecated the ``ssl`` module.
 - Deprecated ``nimrod pretty`` as it never worked good enough and has some
   inherent problems.
-- The integer promotion rules changed.
+- The integer promotion rules changed; the compiler is now less picky in some
+  situations and more picky in other situations: In particular implicit 
+  conversions from ``int`` to ``int32`` are now forbidden.
+- ``system.byte`` is now an alias for ``uint8``; it used to be an alias 
+  to ``int8``.
 
 
 Compiler Additions
@@ -123,6 +127,7 @@ Language Additions
 - The apostrophe in type suffixes for numerical literal is now optional.
 - Unsigned integer types have been added.
 - The integer promotion rules changed.
+- Nimrod now tracks proper intervals for ``range`` over some built-in operators.
 
 
 2012-02-09 Version 0.8.14 released