diff options
Diffstat (limited to 'compiler/semfold.nim')
| -rw-r--r-- | compiler/semfold.nim | 418 |
1 files changed, 257 insertions, 161 deletions
diff --git a/compiler/semfold.nim b/compiler/semfold.nim index 958d8c14e..80144ccc0 100644 --- a/compiler/semfold.nim +++ b/compiler/semfold.nim @@ -11,22 +11,34 @@ # and evaluation phase import - strutils, options, ast, trees, nimsets, - platform, math, msgs, idents, renderer, types, - commands, magicsys, modulegraphs, strtabs, lineinfos + options, ast, trees, nimsets, + platform, msgs, idents, renderer, types, + commands, magicsys, modulegraphs, lineinfos, wordrecg + +import std/[strutils, math, strtabs] +from system/memory import nimCStrLen + +when defined(nimPreviewSlimSystem): + import std/[assertions, formatfloat] proc errorType*(g: ModuleGraph): PType = ## creates a type representing an error state - result = newType(tyError, nextId(g.idgen), g.owners[^1]) + result = newType(tyError, g.idgen, g.owners[^1]) result.flags.incl tfCheckedForDestructor -proc newIntNodeT*(intVal: Int128, n: PNode; g: ModuleGraph): PNode = +proc getIntLitTypeG(g: ModuleGraph; literal: PNode; idgen: IdGenerator): PType = + # we cache some common integer literal types for performance: + let ti = getSysType(g, literal.info, tyInt) + result = copyType(ti, idgen, ti.owner) + result.n = literal + +proc newIntNodeT*(intVal: Int128, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = result = newIntTypeNode(intVal, n.typ) # See bug #6989. 'pred' et al only produce an int literal type if the # original type was 'int', not a distinct int etc. if n.typ.kind == tyInt: # access cache for the int lit type - result.typ = getIntLitType(g, result) + result.typ = getIntLitTypeG(g, result, idgen) result.info = n.info proc newFloatNodeT*(floatVal: BiggestFloat, n: PNode; g: ModuleGraph): PNode = @@ -45,33 +57,43 @@ proc newStrNodeT*(strVal: string, n: PNode; g: ModuleGraph): PNode = proc getConstExpr*(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode # evaluates the constant expression or returns nil if it is no constant # expression -proc evalOp*(m: TMagic, n, a, b, c: PNode; g: ModuleGraph): PNode +proc evalOp*(m: TMagic, n, a, b, c: PNode; idgen: IdGenerator; g: ModuleGraph): PNode proc checkInRange(conf: ConfigRef; n: PNode, res: Int128): bool = res in firstOrd(conf, n.typ)..lastOrd(conf, n.typ) -proc foldAdd(a, b: Int128, n: PNode; g: ModuleGraph): PNode = +proc foldAdd(a, b: Int128, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = let res = a + b if checkInRange(g.config, n, res): - result = newIntNodeT(res, n, g) + result = newIntNodeT(res, n, idgen, g) + else: + result = nil -proc foldSub(a, b: Int128, n: PNode; g: ModuleGraph): PNode = +proc foldSub(a, b: Int128, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = let res = a - b if checkInRange(g.config, n, res): - result = newIntNodeT(res, n, g) + result = newIntNodeT(res, n, idgen, g) + else: + result = nil -proc foldUnarySub(a: Int128, n: PNode, g: ModuleGraph): PNode = +proc foldUnarySub(a: Int128, n: PNode; idgen: IdGenerator, g: ModuleGraph): PNode = if a != firstOrd(g.config, n.typ): - result = newIntNodeT(-a, n, g) + result = newIntNodeT(-a, n, idgen, g) + else: + result = nil -proc foldAbs(a: Int128, n: PNode; g: ModuleGraph): PNode = +proc foldAbs(a: Int128, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = if a != firstOrd(g.config, n.typ): - result = newIntNodeT(abs(a), n, g) + result = newIntNodeT(abs(a), n, idgen, g) + else: + result = nil -proc foldMul(a, b: Int128, n: PNode; g: ModuleGraph): PNode = +proc foldMul(a, b: Int128, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = let res = a * b if checkInRange(g.config, n, res): - return newIntNodeT(res, n, g) + return newIntNodeT(res, n, idgen, g) + else: + result = nil proc ordinalValToString*(a: PNode; g: ModuleGraph): string = # because $ has the param ordinal[T], `a` is not necessarily an enum, but an @@ -83,6 +105,7 @@ proc ordinalValToString*(a: PNode; g: ModuleGraph): string = of tyChar: result = $chr(toInt64(x) and 0xff) of tyEnum: + result = "" var n = t.n for i in 0..<n.len: if n[i].kind != nkSym: internalError(g.config, a.info, "ordinalValToString") @@ -99,10 +122,10 @@ proc ordinalValToString*(a: PNode; g: ModuleGraph): string = result = $x proc isFloatRange(t: PType): bool {.inline.} = - result = t.kind == tyRange and t[0].kind in {tyFloat..tyFloat128} + result = t.kind == tyRange and t.elementType.kind in {tyFloat..tyFloat128} proc isIntRange(t: PType): bool {.inline.} = - result = t.kind == tyRange and t[0].kind in { + result = t.kind == tyRange and t.elementType.kind in { tyInt..tyInt64, tyUInt8..tyUInt32} proc pickIntRange(a, b: PType): PType = @@ -113,65 +136,68 @@ proc pickIntRange(a, b: PType): PType = proc isIntRangeOrLit(t: PType): bool = result = isIntRange(t) or isIntLit(t) -proc evalOp(m: TMagic, n, a, b, c: PNode; g: ModuleGraph): PNode = +proc evalOp(m: TMagic, n, a, b, c: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = # b and c may be nil result = nil case m - of mOrd: result = newIntNodeT(getOrdValue(a), n, g) - of mChr: result = newIntNodeT(getInt(a), n, g) - of mUnaryMinusI, mUnaryMinusI64: result = foldUnarySub(getInt(a), n, g) + of mOrd: result = newIntNodeT(getOrdValue(a), n, idgen, g) + of mChr: result = newIntNodeT(getInt(a), n, idgen, g) + of mUnaryMinusI, mUnaryMinusI64: result = foldUnarySub(getInt(a), n, idgen, g) of mUnaryMinusF64: result = newFloatNodeT(-getFloat(a), n, g) - of mNot: result = newIntNodeT(One - getInt(a), n, g) - of mCard: result = newIntNodeT(toInt128(nimsets.cardSet(g.config, a)), n, g) + of mNot: result = newIntNodeT(One - getInt(a), n, idgen, g) + of mCard: result = newIntNodeT(toInt128(nimsets.cardSet(g.config, a)), n, idgen, g) of mBitnotI: if n.typ.isUnsigned: - result = newIntNodeT(bitnot(getInt(a)).maskBytes(int(n.typ.size)), n, g) + result = newIntNodeT(bitnot(getInt(a)).maskBytes(int(getSize(g.config, n.typ))), n, idgen, g) else: - result = newIntNodeT(bitnot(getInt(a)), n, g) - of mLengthArray: result = newIntNodeT(lengthOrd(g.config, a.typ), n, g) + result = newIntNodeT(bitnot(getInt(a)), n, idgen, g) + of mLengthArray: result = newIntNodeT(lengthOrd(g.config, a.typ), n, idgen, g) of mLengthSeq, mLengthOpenArray, mLengthStr: if a.kind == nkNilLit: - result = newIntNodeT(Zero, n, g) + result = newIntNodeT(Zero, n, idgen, g) elif a.kind in {nkStrLit..nkTripleStrLit}: - result = newIntNodeT(toInt128(a.strVal.len), n, g) + if a.typ.kind == tyString: + result = newIntNodeT(toInt128(a.strVal.len), n, idgen, g) + elif a.typ.kind == tyCstring: + result = newIntNodeT(toInt128(nimCStrLen(a.strVal.cstring)), n, idgen, g) else: - result = newIntNodeT(toInt128(a.len), n, g) + result = newIntNodeT(toInt128(a.len), n, idgen, g) of mUnaryPlusI, mUnaryPlusF64: result = a # throw `+` away # XXX: Hides overflow/underflow - of mAbsI: result = foldAbs(getInt(a), n, g) - of mSucc: result = foldAdd(getOrdValue(a), getInt(b), n, g) - of mPred: result = foldSub(getOrdValue(a), getInt(b), n, g) - of mAddI: result = foldAdd(getInt(a), getInt(b), n, g) - of mSubI: result = foldSub(getInt(a), getInt(b), n, g) - of mMulI: result = foldMul(getInt(a), getInt(b), n, g) + of mAbsI: result = foldAbs(getInt(a), n, idgen, g) + of mSucc: result = foldAdd(getOrdValue(a), getInt(b), n, idgen, g) + of mPred: result = foldSub(getOrdValue(a), getInt(b), n, idgen, g) + of mAddI: result = foldAdd(getInt(a), getInt(b), n, idgen, g) + of mSubI: result = foldSub(getInt(a), getInt(b), n, idgen, g) + of mMulI: result = foldMul(getInt(a), getInt(b), n, idgen, g) of mMinI: let argA = getInt(a) let argB = getInt(b) - result = newIntNodeT(if argA < argB: argA else: argB, n, g) + result = newIntNodeT(if argA < argB: argA else: argB, n, idgen, g) of mMaxI: let argA = getInt(a) let argB = getInt(b) - result = newIntNodeT(if argA > argB: argA else: argB, n, g) + result = newIntNodeT(if argA > argB: argA else: argB, n, idgen, g) of mShlI: case skipTypes(n.typ, abstractRange).kind - of tyInt8: result = newIntNodeT(toInt128(toInt8(getInt(a)) shl toInt64(getInt(b))), n, g) - of tyInt16: result = newIntNodeT(toInt128(toInt16(getInt(a)) shl toInt64(getInt(b))), n, g) - of tyInt32: result = newIntNodeT(toInt128(toInt32(getInt(a)) shl toInt64(getInt(b))), n, g) - of tyInt64: result = newIntNodeT(toInt128(toInt64(getInt(a)) shl toInt64(getInt(b))), n, g) + of tyInt8: result = newIntNodeT(toInt128(toInt8(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) + of tyInt16: result = newIntNodeT(toInt128(toInt16(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) + of tyInt32: result = newIntNodeT(toInt128(toInt32(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) + of tyInt64: result = newIntNodeT(toInt128(toInt64(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) of tyInt: if g.config.target.intSize == 4: - result = newIntNodeT(toInt128(toInt32(getInt(a)) shl toInt64(getInt(b))), n, g) + result = newIntNodeT(toInt128(toInt32(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) else: - result = newIntNodeT(toInt128(toInt64(getInt(a)) shl toInt64(getInt(b))), n, g) - of tyUInt8: result = newIntNodeT(toInt128(toUInt8(getInt(a)) shl toInt64(getInt(b))), n, g) - of tyUInt16: result = newIntNodeT(toInt128(toUInt16(getInt(a)) shl toInt64(getInt(b))), n, g) - of tyUInt32: result = newIntNodeT(toInt128(toUInt32(getInt(a)) shl toInt64(getInt(b))), n, g) - of tyUInt64: result = newIntNodeT(toInt128(toUInt64(getInt(a)) shl toInt64(getInt(b))), n, g) + result = newIntNodeT(toInt128(toInt64(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) + of tyUInt8: result = newIntNodeT(toInt128(toUInt8(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) + of tyUInt16: result = newIntNodeT(toInt128(toUInt16(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) + of tyUInt32: result = newIntNodeT(toInt128(toUInt32(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) + of tyUInt64: result = newIntNodeT(toInt128(toUInt64(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) of tyUInt: if g.config.target.intSize == 4: - result = newIntNodeT(toInt128(toUInt32(getInt(a)) shl toInt64(getInt(b))), n, g) + result = newIntNodeT(toInt128(toUInt32(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) else: - result = newIntNodeT(toInt128(toUInt64(getInt(a)) shl toInt64(getInt(b))), n, g) + result = newIntNodeT(toInt128(toUInt64(getInt(a)) shl toInt64(getInt(b))), n, idgen, g) else: internalError(g.config, n.info, "constant folding for shl") of mShrI: var a = cast[uint64](getInt(a)) @@ -192,75 +218,81 @@ proc evalOp(m: TMagic, n, a, b, c: PNode; g: ModuleGraph): PNode = # unsigned and 64 bit integers don't need masking discard let c = cast[BiggestInt](a shr b) - result = newIntNodeT(toInt128(c), n, g) + result = newIntNodeT(toInt128(c), n, idgen, g) of mAshrI: case skipTypes(n.typ, abstractRange).kind - of tyInt8: result = newIntNodeT(toInt128(ashr(toInt8(getInt(a)), toInt8(getInt(b)))), n, g) - of tyInt16: result = newIntNodeT(toInt128(ashr(toInt16(getInt(a)), toInt16(getInt(b)))), n, g) - of tyInt32: result = newIntNodeT(toInt128(ashr(toInt32(getInt(a)), toInt32(getInt(b)))), n, g) + of tyInt8: result = newIntNodeT(toInt128(ashr(toInt8(getInt(a)), toInt8(getInt(b)))), n, idgen, g) + of tyInt16: result = newIntNodeT(toInt128(ashr(toInt16(getInt(a)), toInt16(getInt(b)))), n, idgen, g) + of tyInt32: result = newIntNodeT(toInt128(ashr(toInt32(getInt(a)), toInt32(getInt(b)))), n, idgen, g) of tyInt64, tyInt: - result = newIntNodeT(toInt128(ashr(toInt64(getInt(a)), toInt64(getInt(b)))), n, g) + result = newIntNodeT(toInt128(ashr(toInt64(getInt(a)), toInt64(getInt(b)))), n, idgen, g) else: internalError(g.config, n.info, "constant folding for ashr") of mDivI: let argA = getInt(a) let argB = getInt(b) if argB != Zero and (argA != firstOrd(g.config, n.typ) or argB != NegOne): - result = newIntNodeT(argA div argB, n, g) + result = newIntNodeT(argA div argB, n, idgen, g) of mModI: let argA = getInt(a) let argB = getInt(b) if argB != Zero and (argA != firstOrd(g.config, n.typ) or argB != NegOne): - result = newIntNodeT(argA mod argB, n, g) + result = newIntNodeT(argA mod argB, n, idgen, g) of mAddF64: result = newFloatNodeT(getFloat(a) + getFloat(b), n, g) of mSubF64: result = newFloatNodeT(getFloat(a) - getFloat(b), n, g) of mMulF64: result = newFloatNodeT(getFloat(a) * getFloat(b), n, g) of mDivF64: result = newFloatNodeT(getFloat(a) / getFloat(b), n, g) - of mIsNil: result = newIntNodeT(toInt128(ord(a.kind == nkNilLit)), n, g) + of mIsNil: + let val = a.kind == nkNilLit or + # nil closures have the value (nil, nil) + (a.typ != nil and skipTypes(a.typ, abstractRange).kind == tyProc and + a.kind == nkTupleConstr and a.len == 2 and + a[0].kind == nkNilLit and a[1].kind == nkNilLit) + result = newIntNodeT(toInt128(ord(val)), n, idgen, g) of mLtI, mLtB, mLtEnum, mLtCh: - result = newIntNodeT(toInt128(ord(getOrdValue(a) < getOrdValue(b))), n, g) + result = newIntNodeT(toInt128(ord(getOrdValue(a) < getOrdValue(b))), n, idgen, g) of mLeI, mLeB, mLeEnum, mLeCh: - result = newIntNodeT(toInt128(ord(getOrdValue(a) <= getOrdValue(b))), n, g) + result = newIntNodeT(toInt128(ord(getOrdValue(a) <= getOrdValue(b))), n, idgen, g) of mEqI, mEqB, mEqEnum, mEqCh: - result = newIntNodeT(toInt128(ord(getOrdValue(a) == getOrdValue(b))), n, g) - of mLtF64: result = newIntNodeT(toInt128(ord(getFloat(a) < getFloat(b))), n, g) - of mLeF64: result = newIntNodeT(toInt128(ord(getFloat(a) <= getFloat(b))), n, g) - of mEqF64: result = newIntNodeT(toInt128(ord(getFloat(a) == getFloat(b))), n, g) - of mLtStr: result = newIntNodeT(toInt128(ord(getStr(a) < getStr(b))), n, g) - of mLeStr: result = newIntNodeT(toInt128(ord(getStr(a) <= getStr(b))), n, g) - of mEqStr: result = newIntNodeT(toInt128(ord(getStr(a) == getStr(b))), n, g) + result = newIntNodeT(toInt128(ord(getOrdValue(a) == getOrdValue(b))), n, idgen, g) + of mLtF64: result = newIntNodeT(toInt128(ord(getFloat(a) < getFloat(b))), n, idgen, g) + of mLeF64: result = newIntNodeT(toInt128(ord(getFloat(a) <= getFloat(b))), n, idgen, g) + of mEqF64: result = newIntNodeT(toInt128(ord(getFloat(a) == getFloat(b))), n, idgen, g) + of mLtStr: result = newIntNodeT(toInt128(ord(getStr(a) < getStr(b))), n, idgen, g) + of mLeStr: result = newIntNodeT(toInt128(ord(getStr(a) <= getStr(b))), n, idgen, g) + of mEqStr: result = newIntNodeT(toInt128(ord(getStr(a) == getStr(b))), n, idgen, g) of mLtU: - result = newIntNodeT(toInt128(ord(`<%`(toInt64(getOrdValue(a)), toInt64(getOrdValue(b))))), n, g) + result = newIntNodeT(toInt128(ord(`<%`(toInt64(getOrdValue(a)), toInt64(getOrdValue(b))))), n, idgen, g) of mLeU: - result = newIntNodeT(toInt128(ord(`<=%`(toInt64(getOrdValue(a)), toInt64(getOrdValue(b))))), n, g) - of mBitandI, mAnd: result = newIntNodeT(bitand(a.getInt, b.getInt), n, g) - of mBitorI, mOr: result = newIntNodeT(bitor(getInt(a), getInt(b)), n, g) - of mBitxorI, mXor: result = newIntNodeT(bitxor(getInt(a), getInt(b)), n, g) + result = newIntNodeT(toInt128(ord(`<=%`(toInt64(getOrdValue(a)), toInt64(getOrdValue(b))))), n, idgen, g) + of mBitandI, mAnd: result = newIntNodeT(bitand(a.getInt, b.getInt), n, idgen, g) + of mBitorI, mOr: result = newIntNodeT(bitor(getInt(a), getInt(b)), n, idgen, g) + of mBitxorI, mXor: result = newIntNodeT(bitxor(getInt(a), getInt(b)), n, idgen, g) of mAddU: - let val = maskBytes(getInt(a) + getInt(b), int(n.typ.size)) - result = newIntNodeT(val, n, g) + let val = maskBytes(getInt(a) + getInt(b), int(getSize(g.config, n.typ))) + result = newIntNodeT(val, n, idgen, g) of mSubU: - let val = maskBytes(getInt(a) - getInt(b), int(n.typ.size)) - result = newIntNodeT(val, n, g) + let val = maskBytes(getInt(a) - getInt(b), int(getSize(g.config, n.typ))) + result = newIntNodeT(val, n, idgen, g) # echo "subU: ", val, " n: ", n, " result: ", val of mMulU: - let val = maskBytes(getInt(a) * getInt(b), int(n.typ.size)) - result = newIntNodeT(val, n, g) + let val = maskBytes(getInt(a) * getInt(b), int(getSize(g.config, n.typ))) + result = newIntNodeT(val, n, idgen, g) of mModU: - let argA = maskBytes(getInt(a), int(a.typ.size)) - let argB = maskBytes(getInt(b), int(a.typ.size)) + let argA = maskBytes(getInt(a), int(getSize(g.config, a.typ))) + let argB = maskBytes(getInt(b), int(getSize(g.config, a.typ))) if argB != Zero: - result = newIntNodeT(argA mod argB, n, g) + result = newIntNodeT(argA mod argB, n, idgen, g) of mDivU: - let argA = maskBytes(getInt(a), int(a.typ.size)) - let argB = maskBytes(getInt(b), int(a.typ.size)) + let argA = maskBytes(getInt(a), int(getSize(g.config, a.typ))) + let argB = maskBytes(getInt(b), int(getSize(g.config, a.typ))) if argB != Zero: - result = newIntNodeT(argA div argB, n, g) - of mLeSet: result = newIntNodeT(toInt128(ord(containsSets(g.config, a, b))), n, g) - of mEqSet: result = newIntNodeT(toInt128(ord(equalSets(g.config, a, b))), n, g) + result = newIntNodeT(argA div argB, n, idgen, g) + of mLeSet: result = newIntNodeT(toInt128(ord(containsSets(g.config, a, b))), n, idgen, g) + of mEqSet: result = newIntNodeT(toInt128(ord(equalSets(g.config, a, b))), n, idgen, g) of mLtSet: result = newIntNodeT(toInt128(ord( - containsSets(g.config, a, b) and not equalSets(g.config, a, b))), n, g) + containsSets(g.config, a, b) and not equalSets(g.config, a, b))), n, idgen, g) of mMulSet: result = nimsets.intersectSets(g.config, a, b) result.info = n.info @@ -271,36 +303,28 @@ proc evalOp(m: TMagic, n, a, b, c: PNode; g: ModuleGraph): PNode = result = nimsets.diffSets(g.config, a, b) result.info = n.info of mConStrStr: result = newStrNodeT(getStrOrChar(a) & getStrOrChar(b), n, g) - of mInSet: result = newIntNodeT(toInt128(ord(inSet(a, b))), n, g) + of mInSet: result = newIntNodeT(toInt128(ord(inSet(a, b))), n, idgen, g) of mRepr: # BUGFIX: we cannot eval mRepr here for reasons that I forgot. discard - of mIntToStr, mInt64ToStr: result = newStrNodeT($(getOrdValue(a)), n, g) of mBoolToStr: if getOrdValue(a) == 0: result = newStrNodeT("false", n, g) else: result = newStrNodeT("true", n, g) - of mFloatToStr: result = newStrNodeT($getFloat(a), n, g) of mCStrToStr, mCharToStr: - if a.kind == nkBracket: - var s = "" - for b in a.sons: - s.add b.getStrOrChar - result = newStrNodeT(s, n, g) - else: - result = newStrNodeT(getStrOrChar(a), n, g) + result = newStrNodeT(getStrOrChar(a), n, g) of mStrToStr: result = newStrNodeT(getStrOrChar(a), n, g) of mEnumToStr: result = newStrNodeT(ordinalValToString(a, g), n, g) of mArrToSeq: result = copyTree(a) result.typ = n.typ of mCompileOption: - result = newIntNodeT(toInt128(ord(commands.testCompileOption(g.config, a.getStr, n.info))), n, g) + result = newIntNodeT(toInt128(ord(commands.testCompileOption(g.config, a.getStr, n.info))), n, idgen, g) of mCompileOptionArg: result = newIntNodeT(toInt128(ord( - testCompileOptionArg(g.config, getStr(a), getStr(b), n.info))), n, g) + testCompileOptionArg(g.config, getStr(a), getStr(b), n.info))), n, idgen, g) of mEqProc: result = newIntNodeT(toInt128(ord( - exprStructuralEquivalent(a, b, strictSymEquality=true))), n, g) + exprStructuralEquivalent(a, b, strictSymEquality=true))), n, idgen, g) else: discard proc getConstIfExpr(c: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = @@ -338,7 +362,7 @@ proc magicCall(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = var s = n[0].sym var a = getConstExpr(m, n[1], idgen, g) - var b, c: PNode + var b, c: PNode = nil if a == nil: return if n.len > 2: b = getConstExpr(m, n[2], idgen, g) @@ -346,7 +370,7 @@ proc magicCall(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = if n.len > 3: c = getConstExpr(m, n[3], idgen, g) if c == nil: return - result = evalOp(s.magic, n, a, b, c, g) + result = evalOp(s.magic, n, a, b, c, idgen, g) proc getAppType(n: PNode; g: ModuleGraph): PNode = if g.config.globalOptions.contains(optGenDynLib): @@ -363,7 +387,12 @@ proc rangeCheck(n: PNode, value: Int128; g: ModuleGraph) = localError(g.config, n.info, "cannot convert " & $value & " to " & typeToString(n.typ)) -proc foldConv(n, a: PNode; g: ModuleGraph; check = false): PNode = +proc floatRangeCheck(n: PNode, value: BiggestFloat; g: ModuleGraph) = + if value < firstFloat(n.typ) or value > lastFloat(n.typ): + localError(g.config, n.info, "cannot convert " & $value & + " to " & typeToString(n.typ)) + +proc foldConv(n, a: PNode; idgen: IdGenerator; g: ModuleGraph; check = false): PNode = let dstTyp = skipTypes(n.typ, abstractRange - {tyTypeDesc}) let srcTyp = skipTypes(a.typ, abstractRange - {tyTypeDesc}) @@ -377,37 +406,41 @@ proc foldConv(n, a: PNode; g: ModuleGraph; check = false): PNode = of tyBool: case srcTyp.kind of tyFloat..tyFloat64: - result = newIntNodeT(toInt128(getFloat(a) != 0.0), n, g) + result = newIntNodeT(toInt128(getFloat(a) != 0.0), n, idgen, g) of tyChar, tyUInt..tyUInt64, tyInt..tyInt64: - result = newIntNodeT(toInt128(a.getOrdValue != 0), n, g) + result = newIntNodeT(toInt128(a.getOrdValue != 0), n, idgen, g) of tyBool, tyEnum: # xxx shouldn't we disallow `tyEnum`? result = a result.typ = n.typ - else: doAssert false, $srcTyp.kind + else: + raiseAssert $srcTyp.kind of tyInt..tyInt64, tyUInt..tyUInt64: case srcTyp.kind of tyFloat..tyFloat64: - result = newIntNodeT(toInt128(getFloat(a)), n, g) + result = newIntNodeT(toInt128(getFloat(a)), n, idgen, g) of tyChar, tyUInt..tyUInt64, tyInt..tyInt64: var val = a.getOrdValue - if check: rangeCheck(n, val, g) - result = newIntNodeT(val, n, g) if dstTyp.kind in {tyUInt..tyUInt64}: + result = newIntNodeT(maskBytes(val, int getSize(g.config, dstTyp)), n, idgen, g) result.transitionIntKind(nkUIntLit) + else: + if check: rangeCheck(n, val, g) + result = newIntNodeT(val, n, idgen, g) else: result = a result.typ = n.typ - if check and result.kind in {nkCharLit..nkUInt64Lit}: + if check and result.kind in {nkCharLit..nkUInt64Lit} and + dstTyp.kind notin {tyUInt..tyUInt64}: rangeCheck(n, getInt(result), g) of tyFloat..tyFloat64: case srcTyp.kind - of tyInt..tyInt64, tyEnum, tyBool, tyChar: + of tyInt..tyInt64, tyUInt..tyUInt64, tyEnum, tyBool, tyChar: result = newFloatNodeT(toFloat64(getOrdValue(a)), n, g) else: result = a result.typ = n.typ of tyOpenArray, tyVarargs, tyProc, tyPointer: - discard + result = nil else: result = a result.typ = n.typ @@ -434,21 +467,26 @@ proc foldArrayAccess(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNo result = x.sons[idx] if result.kind == nkExprColonExpr: result = result[1] else: + result = nil localError(g.config, n.info, formatErrorIndexBound(idx, x.len-1) & $n) of nkBracket: idx -= toInt64(firstOrd(g.config, x.typ)) if idx >= 0 and idx < x.len: result = x[int(idx)] - else: localError(g.config, n.info, formatErrorIndexBound(idx, x.len-1) & $n) + else: + result = nil + localError(g.config, n.info, formatErrorIndexBound(idx, x.len-1) & $n) of nkStrLit..nkTripleStrLit: result = newNodeIT(nkCharLit, x.info, n.typ) if idx >= 0 and idx < x.strVal.len: result.intVal = ord(x.strVal[int(idx)]) else: localError(g.config, n.info, formatErrorIndexBound(idx, x.strVal.len-1) & $n) - else: discard + else: result = nil proc foldFieldAccess(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = # a real field access; proc calls have already been transformed + result = nil + if n[1].kind != nkSym: return nil var x = getConstExpr(m, n[0], idgen, g) if x == nil or x.kind notin {nkObjConstr, nkPar, nkTupleConstr}: return @@ -476,11 +514,89 @@ proc foldConStrStr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode proc newSymNodeTypeDesc*(s: PSym; idgen: IdGenerator; info: TLineInfo): PNode = result = newSymNode(s, info) if s.typ.kind != tyTypeDesc: - result.typ = newType(tyTypeDesc, idgen.nextId, s.owner) + result.typ = newType(tyTypeDesc, idgen, s.owner) result.typ.addSonSkipIntLit(s.typ, idgen) else: result.typ = s.typ +proc foldDefine(m, s: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = + result = nil + var name = s.name.s + let prag = extractPragma(s) + if prag != nil: + for it in prag: + if it.kind in nkPragmaCallKinds and it.len == 2 and it[0].kind == nkIdent: + let word = whichKeyword(it[0].ident) + if word in {wStrDefine, wIntDefine, wBoolDefine, wDefine}: + # should be processed in pragmas.nim already + if it[1].kind in {nkStrLit, nkRStrLit, nkTripleStrLit}: + name = it[1].strVal + if isDefined(g.config, name): + let str = g.config.symbols[name] + case s.magic + of mIntDefine: + try: + result = newIntNodeT(toInt128(str.parseInt), n, idgen, g) + except ValueError: + localError(g.config, s.info, + "{.intdefine.} const was set to an invalid integer: '" & + str & "'") + of mStrDefine: + result = newStrNodeT(str, n, g) + of mBoolDefine: + try: + result = newIntNodeT(toInt128(str.parseBool.int), n, idgen, g) + except ValueError: + localError(g.config, s.info, + "{.booldefine.} const was set to an invalid bool: '" & + str & "'") + of mGenericDefine: + let rawTyp = s.typ + # pretend we don't support distinct types + let typ = rawTyp.skipTypes(abstractVarRange-{tyDistinct}) + try: + template intNode(value): PNode = + let val = toInt128(value) + rangeCheck(n, val, g) + newIntNodeT(val, n, idgen, g) + case typ.kind + of tyString, tyCstring: + result = newStrNodeT(str, n, g) + of tyInt..tyInt64: + result = intNode(str.parseBiggestInt) + of tyUInt..tyUInt64: + result = intNode(str.parseBiggestUInt) + of tyBool: + result = intNode(str.parseBool.int) + of tyEnum: + # compile time parseEnum + let ident = getIdent(g.cache, str) + for e in typ.n: + if e.kind != nkSym: internalError(g.config, "foldDefine for enum") + let es = e.sym + let match = + if es.ast.isNil: + es.name.id == ident.id + else: + es.ast.strVal == str + if match: + result = intNode(es.position) + break + if result.isNil: + raise newException(ValueError, "invalid enum value: " & str) + else: + localError(g.config, s.info, "unsupported type $1 for define '$2'" % + [name, typeToString(rawTyp)]) + except ValueError as e: + localError(g.config, s.info, + "could not process define '$1' of type $2; $3" % + [name, typeToString(rawTyp), e.msg]) + else: result = copyTree(s.astdef) # unreachable + else: + result = copyTree(s.astdef) + if result != nil: + result.info = n.info + proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode = result = nil case n.kind @@ -488,45 +604,24 @@ proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode var s = n.sym case s.kind of skEnumField: - result = newIntNodeT(toInt128(s.position), n, g) + result = newIntNodeT(toInt128(s.position), n, idgen, g) of skConst: case s.magic - of mIsMainModule: result = newIntNodeT(toInt128(ord(sfMainModule in m.flags)), n, g) + of mIsMainModule: result = newIntNodeT(toInt128(ord(sfMainModule in m.flags)), n, idgen, g) of mCompileDate: result = newStrNodeT(getDateStr(), n, g) of mCompileTime: result = newStrNodeT(getClockStr(), n, g) - of mCpuEndian: result = newIntNodeT(toInt128(ord(CPU[g.config.target.targetCPU].endian)), n, g) + of mCpuEndian: result = newIntNodeT(toInt128(ord(CPU[g.config.target.targetCPU].endian)), n, idgen, g) of mHostOS: result = newStrNodeT(toLowerAscii(platform.OS[g.config.target.targetOS].name), n, g) of mHostCPU: result = newStrNodeT(platform.CPU[g.config.target.targetCPU].name.toLowerAscii, n, g) of mBuildOS: result = newStrNodeT(toLowerAscii(platform.OS[g.config.target.hostOS].name), n, g) of mBuildCPU: result = newStrNodeT(platform.CPU[g.config.target.hostCPU].name.toLowerAscii, n, g) of mAppType: result = getAppType(n, g) - of mIntDefine: - if isDefined(g.config, s.name.s): - try: - result = newIntNodeT(toInt128(g.config.symbols[s.name.s].parseInt), n, g) - except ValueError: - localError(g.config, s.info, - "{.intdefine.} const was set to an invalid integer: '" & - g.config.symbols[s.name.s] & "'") - else: - result = copyTree(s.ast) - of mStrDefine: - if isDefined(g.config, s.name.s): - result = newStrNodeT(g.config.symbols[s.name.s], n, g) - else: - result = copyTree(s.ast) - of mBoolDefine: - if isDefined(g.config, s.name.s): - try: - result = newIntNodeT(toInt128(g.config.symbols[s.name.s].parseBool.int), n, g) - except ValueError: - localError(g.config, s.info, - "{.booldefine.} const was set to an invalid bool: '" & - g.config.symbols[s.name.s] & "'") - else: - result = copyTree(s.ast) + of mIntDefine, mStrDefine, mBoolDefine, mGenericDefine: + result = foldDefine(m, s, n, idgen, g) else: - result = copyTree(s.ast) + result = copyTree(s.astdef) + if result != nil: + result.info = n.info of skProc, skFunc, skMethod: result = n of skParam: @@ -564,30 +659,30 @@ proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode if skipTypes(n[1].typ, abstractVarRange).kind in tyFloat..tyFloat64: result = newFloatNodeT(firstFloat(n[1].typ), n, g) else: - result = newIntNodeT(firstOrd(g.config, n[1].typ), n, g) + result = newIntNodeT(firstOrd(g.config, n[1].typ), n, idgen, g) of mHigh: if skipTypes(n[1].typ, abstractVar+{tyUserTypeClassInst}).kind notin - {tySequence, tyString, tyCString, tyOpenArray, tyVarargs}: + {tySequence, tyString, tyCstring, tyOpenArray, tyVarargs}: if skipTypes(n[1].typ, abstractVarRange).kind in tyFloat..tyFloat64: result = newFloatNodeT(lastFloat(n[1].typ), n, g) else: - result = newIntNodeT(lastOrd(g.config, skipTypes(n[1].typ, abstractVar)), n, g) + result = newIntNodeT(lastOrd(g.config, skipTypes(n[1].typ, abstractVar)), n, idgen, g) else: var a = getArrayConstr(m, n[1], idgen, g) if a.kind == nkBracket: # we can optimize it away: - result = newIntNodeT(toInt128(a.len-1), n, g) + result = newIntNodeT(toInt128(a.len-1), n, idgen, g) of mLengthOpenArray: var a = getArrayConstr(m, n[1], idgen, g) if a.kind == nkBracket: # we can optimize it away! This fixes the bug ``len(134)``. - result = newIntNodeT(toInt128(a.len), n, g) + result = newIntNodeT(toInt128(a.len), n, idgen, g) else: result = magicCall(m, n, idgen, g) of mLengthArray: # It doesn't matter if the argument is const or not for mLengthArray. # This fixes bug #544. - result = newIntNodeT(lengthOrd(g.config, n[1].typ), n, g) + result = newIntNodeT(lengthOrd(g.config, n[1].typ), n, idgen, g) of mSizeOf: result = foldSizeOf(g.config, n, nil) of mAlignOf: @@ -609,13 +704,10 @@ proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode except DivByZeroDefect: localError(g.config, n.info, "division by zero") of nkAddr: - var a = getConstExpr(m, n[0], idgen, g) - if a != nil: - result = n - n[0] = a + result = nil # don't fold paths containing nkAddr of nkBracket, nkCurly: result = copyNode(n) - for i, son in n.pairs: + for son in n.items: var a = getConstExpr(m, son, idgen, g) if a == nil: return nil result.add a @@ -639,7 +731,7 @@ proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode # tuple constructor result = copyNode(n) if (n.len > 0) and (n[0].kind == nkExprColonExpr): - for i, expr in n.pairs: + for expr in n.items: let exprNew = copyNode(expr) # nkExprColonExpr exprNew.add expr[0] let a = getConstExpr(m, expr[1], idgen, g) @@ -647,7 +739,7 @@ proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode exprNew.add a result.add exprNew else: - for i, expr in n.pairs: + for expr in n.items: let a = getConstExpr(m, expr, idgen, g) if a == nil: return nil result.add a @@ -658,6 +750,8 @@ proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode if leValueConv(n[1], a) and leValueConv(a, n[2]): result = a # a <= x and x <= b result.typ = n.typ + elif n.typ.kind in {tyUInt..tyUInt64}: + discard "don't check uints" else: localError(g.config, n.info, "conversion from $1 to $2 is invalid" % @@ -670,15 +764,17 @@ proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode of nkHiddenStdConv, nkHiddenSubConv, nkConv: var a = getConstExpr(m, n[1], idgen, g) if a == nil: return - result = foldConv(n, a, g, check=true) + result = foldConv(n, a, idgen, g, check=true) of nkDerefExpr, nkHiddenDeref: let a = getConstExpr(m, n[0], idgen, g) if a != nil and a.kind == nkNilLit: - localError(g.config, n.info, "nil dereference is not allowed") + result = nil + #localError(g.config, n.info, "nil dereference is not allowed") of nkCast: var a = getConstExpr(m, n[1], idgen, g) if a == nil: return - if n.typ != nil and n.typ.kind in NilableTypes: + if n.typ != nil and n.typ.kind in NilableTypes and + not (n.typ.kind == tyProc and a.typ.kind == tyProc): # we allow compile-time 'cast' for pointer types: result = a result.typ = n.typ |