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lpvartypes_array.pas
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lpvartypes_array.pas
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{
Author: Niels A.D
Project: Lape (http://code.google.com/p/la-pe/)
License: GNU Lesser GPL (http://www.gnu.org/licenses/lgpl.html)
Array types.
}
unit lpvartypes_array;
{$I lape.inc}
interface
uses
Classes, SysUtils,
lptypes, lptree, lpvartypes;
type
TLapeType_DynArray = class(TLapeType_Pointer)
protected
function getAsString: lpString; override;
public
constructor Create(ArrayType: TLapeType; ACompiler: TLapeCompilerBase; AName: lpString = ''; ADocPos: PDocPos = nil); reintroduce; virtual;
function CreateCopy(DeepCopy: Boolean = False): TLapeType; override;
function VarToStringBody(ToStr: TLapeType_OverloadedMethod = nil): lpString; override;
function VarToString(AVar: Pointer): lpString; override;
function VarLo(AVar: Pointer = nil): TLapeGlobalVar; override;
function VarHi(AVar: Pointer = nil): TLapeGlobalVar; override;
procedure VarSetLength(var AVar: Pointer; ALen: SizeInt); overload; virtual;
procedure VarSetLength(AVar, ALen: TResVar; var Offset: Integer; Pos: PDocPos = nil); overload; virtual;
procedure RangeCheck(AVar, AIndex: TLapeGlobalVar; Flags: ELapeEvalFlags); overload; virtual;
procedure RangeCheck(var AVar, AIndex: TResVar; Flags: ELapeEvalFlags; var Offset: Integer; Pos: PDocPos = nil); overload; virtual;
function EvalRes(Op: EOperator; ARight: TLapeType = nil; Flags: ELapeEvalFlags = []): TLapeType; override;
function EvalConst(Op: EOperator; ALeft, ARight: TLapeGlobalVar; Flags: ELapeEvalFlags): TLapeGlobalVar; override;
function Eval(Op: EOperator; var Dest: TResVar; ALeft, ARight: TResVar; Flags: ELapeEvalFlags; var Offset: Integer; Pos: PDocPos = nil): TResVar; override;
end;
TLapeType_StaticArray = class(TLapeType_DynArray)
protected
FRange: TLapeRange;
function getPadding: SizeInt; override;
function getSize: SizeInt; override;
function getAsString: lpString; override;
public
constructor Create(ARange: TLapeRange; ArrayType: TLapeType; ACompiler: TLapeCompilerBase; AName: lpString = ''; ADocPos: PDocPos = nil); reintroduce; virtual;
function CreateCopy(DeepCopy: Boolean = False): TLapeType; override;
function VarToString(AVar: Pointer): lpString; override;
function VarLo(AVar: Pointer = nil): TLapeGlobalVar; override;
function VarHi(AVar: Pointer = nil): TLapeGlobalVar; override;
function NewGlobalVar(AName: lpString = ''; ADocPos: PDocPos = nil): TLapeGlobalVar; reintroduce; virtual;
function EvalRes(Op: EOperator; Right: TLapeType = nil; Flags: ELapeEvalFlags = []): TLapeType; override;
function EvalConst(Op: EOperator; Left, Right: TLapeGlobalVar; Flags: ELapeEvalFlags): TLapeGlobalVar; override;
function Eval(Op: EOperator; var Dest: TResVar; Left, Right: TResVar; Flags: ELapeEvalFlags; var Offset: Integer; Pos: PDocPos = nil): TResVar; override;
procedure Finalize(AVar: TResVar; var Offset: Integer; UseCompiler: Boolean = True; Pos: PDocPos = nil); override;
property Range: TLapeRange read FRange;
end;
TLapeType_String = class(TLapeType_DynArray)
public
function VarToString(AVar: Pointer): lpString; override;
procedure VarUnique(var AVar: Pointer); overload; virtual;
procedure VarUnique(AVar: TResVar; var Offset: Integer; Pos: PDocPos = nil); overload; virtual;
function VarLo(AVar: Pointer = nil): TLapeGlobalVar; override;
function VarHi(AVar: Pointer = nil): TLapeGlobalVar; override;
function NewGlobalVarStr(Str: AnsiString; AName: lpString = ''; ADocPos: PDocPos = nil): TLapeGlobalVar; override;
function NewGlobalVar(Str: AnsiString; AName: lpString = ''; ADocPos: PDocPos = nil): TLapeGlobalVar; reintroduce; overload; virtual;
function NewGlobalVarStr(Str: UnicodeString; AName: lpString = ''; ADocPos: PDocPos = nil): TLapeGlobalVar; override;
function NewGlobalVar(Str: UnicodeString; AName: lpString = ''; ADocPos: PDocPos = nil): TLapeGlobalVar; reintroduce; overload; virtual;
function EvalConst(Op: EOperator; Left, Right: TLapeGlobalVar; Flags: ELapeEvalFlags): TLapeGlobalVar; override;
function Eval(Op: EOperator; var Dest: TResVar; Left, Right: TResVar; Flags: ELapeEvalFlags; var Offset: Integer; Pos: PDocPos = nil): TResVar; override;
end;
TLapeType_AnsiString = class(TLapeType_String)
public constructor Create(ACompiler: TLapeCompilerBase; AName: lpString = ''; ADocPos: PDocPos = nil); reintroduce; virtual; end;
TLapeType_WideString = class(TLapeType_String)
public constructor Create(ACompiler: TLapeCompilerBase; AName: lpString = ''; ADocPos: PDocPos = nil); reintroduce; virtual; end;
TLapeType_UnicodeString = class(TLapeType_String)
public constructor Create(ACompiler: TLapeCompilerBase; AName: lpString = ''; ADocPos: PDocPos = nil); reintroduce; virtual; end;
TLapeType_ShortString = class(TLapeType_StaticArray)
protected
function getAsString: lpString; override;
public
constructor Create(ACompiler: TLapeCompilerBase; ASize: UInt8 = High(UInt8); AName: lpString = ''; ADocPos: PDocPos = nil); reintroduce; virtual;
function VarToString(AVar: Pointer): lpString; override;
function VarLo(AVar: Pointer = nil): TLapeGlobalVar; override;
function VarHi(AVar: Pointer = nil): TLapeGlobalVar; override;
function NewGlobalVarStr(Str: UnicodeString; AName: lpString = ''; ADocPos: PDocPos = nil): TLapeGlobalVar; override;
function NewGlobalVar(Str: ShortString; AName: lpString = ''; ADocPos: PDocPos = nil): TLapeGlobalVar; reintroduce; overload; virtual;
function EvalConst(Op: EOperator; Left, Right: TLapeGlobalVar; Flags: ELapeEvalFlags): TLapeGlobalVar; override;
function Eval(Op: EOperator; var Dest: TResVar; Left, Right: TResVar; Flags: ELapeEvalFlags; var Offset: Integer; Pos: PDocPos = nil): TResVar; override;
end;
implementation
uses
lpparser, lpeval, lpexceptions;
function TLapeType_DynArray.getAsString: lpString;
begin
if (FAsString = '') and (FBaseType = ltDynArray) then
if HasType() then
FAsString := 'array of ' + FPType.AsString
else
FAsString := 'array';
Result := inherited;
end;
constructor TLapeType_DynArray.Create(ArrayType: TLapeType; ACompiler: TLapeCompilerBase; AName: lpString = ''; ADocPos: PDocPos = nil);
begin
inherited Create(ACompiler, ArrayType, False, AName, ADocPos);
FBaseType := ltDynArray;
end;
function TLapeType_DynArray.CreateCopy(DeepCopy: Boolean = False): TLapeType;
type
TLapeClassType = class of TLapeType_DynArray;
begin
Result := TLapeClassType(Self.ClassType).Create(FPType, FCompiler, Name, @_DocPos);
with TLapeType_DynArray(Result) do
begin
inheritManagedDecls(Self, not DeepCopy);
TypeID := Self.TypeID;
FBaseType := Self.BaseType;
end;
end;
function TLapeType_DynArray.VarToStringBody(ToStr: TLapeType_OverloadedMethod = nil): lpString;
var
Index: Integer;
begin
Result := '';
if (ToStr = nil) or (FCompiler = nil) or (not HasType()) then
Exit;
Index := ToStr.getMethodIndex(getTypeArray([PType]), FCompiler.getBaseType(ltString));
if (Index < 0) then
Exit;
Result := lpString(
' function _ElementToString(p: System.ConstPointer): System.string; static;' + LineEnding +
' begin' + LineEnding +
' Result := System.ToString['+IntToStr(Index)+'](p^);' + LineEnding +
' end;' + LineEnding +
'type' + LineEnding +
' TArrayToString = private function(constref Arr; AToString: System.ConstPointer; Len, Size: System.SizeInt): System.string;' + LineEnding +
'var' + LineEnding +
' Len: System.SizeInt;' + LineEnding +
'begin' + LineEnding +
' Len := System.Length(Param0);' + LineEnding +
' if (Len <= 0) then' + LineEnding +
' Result := '#39'[]'#39'' + LineEnding +
' else' + LineEnding +
' Result := TArrayToString(System._ArrayToString)(' + LineEnding +
' Param0['+IntToStr(VarLo().AsInteger)+'],' + LineEnding +
' _ElementToString, Len, System.SizeOf(Param0[0]));' + LineEnding +
'end;');
end;
function TLapeType_DynArray.VarToString(AVar: Pointer): lpString;
var
i: Integer;
p: Pointer;
Builder: TLapeStringList;
begin
Result := '[';
if (AVar <> nil) and HasType() then
try
p := PPointer(AVar)^;
Builder := TLapeStringList.Create('', dupAccept, True, False);
for i := 0 to Length(PCodeArray(AVar)^) - 1 do
Builder.Add(FPType.VarToString(Pointer(PtrUInt(p) + PtrUInt(FPType.Size * i))));
Result := Result + Builder.Implode(', ');
finally
Builder.Free();
end;
Result := Result + ']';
end;
function TLapeType_DynArray.VarLo(AVar: Pointer = nil): TLapeGlobalVar;
begin
if (FCompiler = nil) then
Result := nil
else
Result := FCompiler.getConstant(0, ltSizeInt, False, True);
end;
function TLapeType_DynArray.VarHi(AVar: Pointer = nil): TLapeGlobalVar;
begin
if (FCompiler = nil) or (AVar = nil) then
Result := nil
else
Result := FCompiler.getConstant(High(PCodeArray(AVar)^), ltSizeInt, False, True);
end;
procedure TLapeType_DynArray.VarSetLength(var AVar: Pointer; ALen: SizeInt);
var
i, OldLen, NewSize: SizeInt;
NewP: Pointer;
DoFree: Boolean;
tmpLeft, tmpRight: TLapeGlobalVar;
begin
if (not (BaseType in LapeArrayTypes - [ltStaticArray])) then
LapeException(lpeInvalidEvaluation);
if (not HasType()) then
Exit;
if (BaseType in LapeStringTypes) then
begin
case BaseType of
ltAnsiString: SetLength(AnsiString(AVar), ALen);
ltWideString: SetLength(WideString(AVar), ALen);
ltUnicodeString: SetLength(UnicodeString(AVar), ALen);
ltShortString:
begin
tmpRight := VarHi();
if (ALen < 0) or (tmpRight = nil) or (ALen > tmpRight.AsInteger) then
LapeException(lpeOutOfTypeRange)
else
SetLength(PShortString(AVar)^, ALen);
end
else LapeException(lpeImpossible);
end;
Exit;
end;
NewSize := ALen * PType.Size;
DoFree := NewSize <= 0;
Inc(NewSize, SizeOf(PtrInt) + SizeOf(SizeInt));
if (AVar = nil) then
begin
if DoFree then
Exit;
AVar := AllocMem(NewSize);
PtrInt(AVar^) := 1;
Inc(PtrUInt(AVar), SizeOf(PtrInt));
SizeInt(AVar^) := ALen {$IFDEF FPC}-1{$ENDIF};
Inc(PtrUInt(AVar), SizeOf(SizeInt));
Exit;
end;
Dec(PtrUInt(AVar), SizeOf(SizeInt));
OldLen := SizeInt(AVar^) {$IFDEF FPC}+1{$ENDIF};
Dec(PtrUInt(AVar), SizeOf(PtrInt));
if (PtrInt(AVar^) <= 1) then
begin
if (ALen = OldLen) then
begin
Inc(PtrUInt(AVar), SizeOf(SizeInt) + SizeOf(PtrInt));
Exit;
end;
if (ALen < OldLen) and PType.NeedFinalization then
begin
Inc(PtrUInt(AVar), SizeOf(SizeInt) + SizeOf(PtrInt));
i := ALen;
while (i < OldLen) do
begin
tmpLeft := PType.NewGlobalVarP(Pointer(PtrInt(AVar) + (i * PType.Size)));
try
PType.Finalize(tmpLeft);
finally
tmpLeft.Free();
end;
Inc(i);
end;
Dec(PtrUInt(AVar), SizeOf(SizeInt) + SizeOf(PtrInt));
end;
if DoFree then
begin
FreeMem(AVar);
AVar := nil;
Exit;
end;
ReallocMem(AVar, NewSize);
PtrInt(AVar^) := 1;
Inc(PtrUInt(AVar), SizeOf(PtrInt));
SizeInt(AVar^) := ALen {$IFDEF FPC}-1{$ENDIF};
Inc(PtrUInt(AVar), SizeOf(SizeInt));
if (ALen > OldLen) then
FillChar(Pointer(PtrInt(AVar) + (OldLen * PType.Size))^, (ALen - OldLen) * PType.Size, 0);
end
else
begin
Dec(PtrInt(AVar^));
NewP := nil;
VarSetLength(NewP, ALen);
i := OldLen;
if (ALen < OldLen) then
i := ALen;
Inc(PtrUInt(AVar), SizeOf(PtrInt) + SizeOf(SizeInt));
Dec(i);
while (i >= 0) do
begin
tmpLeft := PType.NewGlobalVarP(Pointer(PtrInt(NewP) + (i * PType.Size)));
tmpRight := PType.NewGlobalVarP(Pointer(PtrInt(AVar) + (i * PType.Size)));
try
PType.EvalConst(op_Assign, tmpLeft, tmpRight, []);
finally
tmpLeft.Free();
tmpRight.Free();
end;
Dec(i);
end;
AVar := NewP;
end;
end;
procedure TLapeType_DynArray.VarSetLength(AVar, ALen: TResVar; var Offset: Integer; Pos: PDocPos = nil);
begin
Assert(FCompiler <> nil);
//FCompiler.EmitCode('System.SetLength(AVar, ALen);', ['AVar', 'ALen'], [], [AVar, ALen], Offset, Pos);
with TLapeTree_InternalMethod_SetLength.Create(FCompiler, Pos) do
try
addParam(TLapeTree_ResVar.Create(AVar, FCompiler, Pos));
addParam(TLapeTree_ResVar.Create(ALen, FCompiler, Pos));
Compile(Offset).Spill(1);
finally
Free();
end;
end;
procedure TLapeType_DynArray.RangeCheck(AVar, AIndex: TLapeGlobalVar; Flags: ELapeEvalFlags);
var
Idx: SizeInt;
Lo, Hi: TLapeGlobalVar;
begin
if (AVar = nil) or (not AIndex.HasType()) then
LapeException(lpeInvalidEvaluation)
else if (not AIndex.VarType.IsOrdinal()) then
LapeExceptionFmt(lpeInvalidIndex, [AIndex.VarType.AsString])
else if (not (lefConstRangeCheck in Flags)) then
Exit;
Idx := AIndex.AsInteger;
if (FBaseType in LapeStringTypes) then
Inc(Idx);
Lo := VarLo(AVar.Ptr);
Hi := VarHi(Avar.Ptr);
if ((Lo <> nil) and (Idx < Lo.AsInteger)) or ((Hi <> nil) and (Idx > Hi.AsInteger)) then
if (Lo <> nil) and (Hi <> nil) then
LapeExceptionFmt(lpeIndexOutOfRange, [idx, Lo.AsInteger, Hi.AsInteger])
else if (Lo <> nil) then
LapeExceptionFmt(lpeIndexOutOfRangeLow, [idx, Lo.AsInteger])
else if (Hi <> nil) then
LapeExceptionFmt(lpeIndexOutOfRangeHigh, [idx, Hi.AsInteger]);
end;
procedure TLapeType_DynArray.RangeCheck(var AVar, AIndex: TResVar; Flags: ELapeEvalFlags; var Offset: Integer; Pos: PDocPos = nil);
var
Idx: SizeInt;
Lo, Hi: TLapeGlobalVar;
Check, Len: TLapeTree_Invoke;
begin
if (not AIndex.HasType()) then
LapeException(lpeInvalidEvaluation)
else if (not AIndex.VarType.IsOrdinal()) then
LapeExceptionFmt(lpeInvalidIndex, [AIndex.VarType.AsString])
else if (([lefRangeCheck, lefConstRangeCheck]) * Flags = []) then
Exit;
if AVar.isConstant and (AVar.VarPos.MemPos = mpMem) then
begin
Lo := VarLo(AVar.VarPos.GlobalVar.Ptr);
Hi := VarHi(AVar.VarPos.GlobalVar.Ptr);
end
else
begin
Lo := VarLo();
Hi := VarHi();
end;
if (lefConstRangeCheck in Flags) and
AVar.HasType() and (AVar.VarType.BaseType in LapeArrayTypes) and
AIndex.isConstant and (AIndex.VarPos.MemPos = mpMem)
then
begin
Idx := AIndex.VarPos.GlobalVar.AsInteger;
if ((Lo <> nil) and (Idx < Lo.AsInteger)) or ((Hi <> nil) and (Idx > Hi.AsInteger)) then
begin
if (Lo <> nil) and (Hi <> nil) then
LapeExceptionFmt(lpeIndexOutOfRange, [idx, Lo.AsInteger, Hi.AsInteger])
else if (Lo <> nil) then
LapeExceptionFmt(lpeIndexOutOfRangeLow, [idx, Lo.AsInteger])
else if (Hi <> nil) then
LapeExceptionFmt(lpeIndexOutOfRangeHigh, [idx, Hi.AsInteger]);
end
else if (Lo <> nil) and (Hi <> nil) then
Exit;
end;
if (not (lefRangeCheck in Flags)) then
Exit;
AIndex.VarType := FCompiler.getBaseType(AIndex.VarType.BaseIntType);
if (AIndex.VarPos.MemPos = mpStack) then
begin
AIndex := _ResVar.New(FCompiler.getTempVar(AIndex.VarType));
FCompiler.Emitter._PopStackToVar(AIndex.VarType.Size, AIndex.VarPos.StackVar.Offset, Offset, @_DocPos);
end;
Check := TLapeTree_Invoke.Create('_RangeCheck', FCompiler, Pos) ;
with Check do
try
addParam(TLapeTree_ResVar.Create(AIndex.IncLock(), Check));
Len := TLapeTree_InternalMethod_Low.Create(FCompiler, Pos);
Len.addParam(TLapeTree_ResVar.Create(AVar.IncLock(), Check));
addParam(TLapeTree_ExprBase(Len.FoldConstants()));
Len := TLapeTree_InternalMethod_High.Create(FCompiler, Pos);
Len.addParam(TLapeTree_ResVar.Create(AVar.IncLock(), Check));
addParam(TLapeTree_ExprBase(Len.FoldConstants()));
Compile(Offset).Spill(1);
finally
Free();
end;
end;
function TLapeType_DynArray.EvalRes(Op: EOperator; ARight: TLapeType = nil; Flags: ELapeEvalFlags = []): TLapeType;
begin
if (op = op_Index) then
Result := FPType
else if (op = op_Assign) and (BaseType = ltDynArray) and HasType() and (ARight <> nil) and (ARight is ClassType) and FPType.Equals(TLapeType_DynArray(ARight).FPType) then
Result := Self
else if (op = op_Plus) and (BaseType = ltDynArray) and HasType() and FPType.CompatibleWith(ARight) then
Result := Self
else if (op = op_Plus) and (BaseType = ltDynArray) and HasType() and (ARight <> nil) and (ARight is ClassType) and FPType.Equals(TLapeType_DynArray(ARight).FPType) then
Result := Self
else
Result := inherited;
end;
function TLapeType_DynArray.EvalConst(Op: EOperator; ALeft, ARight: TLapeGlobalVar; Flags: ELapeEvalFlags): TLapeGlobalVar;
var
tmpType: ELapeBaseType;
IndexVar: TLapeGlobalVar;
begin
Assert(FCompiler <> nil);
Assert((ALeft = nil) or (ALeft.VarType is TLapeType_Pointer));
if (op = op_Index) then
begin
//Cache AsString before changing FBaseType
GetAsString();
RangeCheck(ALeft, ARight, Flags);
tmpType := FBaseType;
FBaseType := ltPointer;
IndexVar := nil;
try
IndexVar := inherited EvalConst(Op, ALeft, ARight, Flags);
Result := //Result := Pointer[Index]^
EvalConst(
op_Deref,
IndexVar,
nil,
[]
);
Result.CopyFlags(ALeft);
finally
if (IndexVar <> nil) then
IndexVar.Free();
FBaseType := tmpType;
end;
end
else if (op = op_Assign) and (BaseType = ltDynArray) and (ALeft <> nil) and (ARight <> nil) and CompatibleWith(ARight.VarType) then
if (ARight.BaseType = ltDynArray) then
begin
if (PPointer(ALeft.Ptr)^ = PPointer(ARight.Ptr)^) then
Exit(ALeft);
VarSetLength(PPointer(ALeft.Ptr)^, 0);
Result := inherited;
end
else if (ARight.VarType is TLapeType_StaticArray) then
begin
VarSetLength(PPointer(ALeft.Ptr)^, TLapeType_StaticArray(ARight.VarType).Range.Hi - TLapeType_StaticArray(ARight.VarType).Range.Lo + 1);
Result := ALeft;
IndexVar := EvalConst(op_Index, ALeft, FCompiler.getConstant(0), [lefAssigning]);
try
IndexVar.VarType := ARight.VarType;
IndexVar.VarType.EvalConst(op_Assign, IndexVar, ARight, []);
finally
IndexVar.Free();
end;
end
else
LapeException(lpeImpossible)
else if (op = op_Plus) and (BaseType = ltDynArray) and (ALeft <> nil) and (ARight <> nil) and HasType() and FPType.CompatibleWith(ARight.VarType) then
begin
Result := EvalConst(op_Assign, NewGlobalVarP(), ALeft, []);
IndexVar := FCompiler.getConstant(Length(PCodeArray(Result.Ptr)^));
VarSetLength(PPointer(Result.Ptr)^, IndexVar.AsInteger + 1);
IndexVar := EvalConst(op_Index, Result, IndexVar, [lefAssigning]);
try
PType.EvalConst(op_Assign, IndexVar, ARight, []);
finally
IndexVar.Free();
end;
end
else
Result := inherited;
end;
function TLapeType_DynArray.Eval(Op: EOperator; var Dest: TResVar; ALeft, ARight: TResVar; Flags: ELapeEvalFlags; var Offset: Integer; Pos: PDocPos = nil): TResVar;
var
tmpType: ELapeBaseType;
tmpVar: TLapeStackTempVar;
IndexVar, tmpResVar: TResVar;
wasConstant: Boolean;
Node: TLapeTree_Base;
begin
Assert(FCompiler <> nil);
Assert(ALeft.VarType is TLapeType_Pointer);
IndexVar := NullResVar;
tmpResVar := NullResVar;
tmpVar := nil;
if (op = op_Index) then
begin
//Cache AsString before changing FBaseType
GetAsString();
RangeCheck(ALeft, ARight, Flags, Offset, Pos);
tmpType := FBaseType;
FBaseType := ltPointer;
try
if (not ALeft.VarPos.isPointer) then
begin
if (Dest.VarPos.MemPos = mpStack) then
Dest := NullResVar;
Result := inherited Eval(Op, Dest, ALeft, ARight, Flags, Offset, Pos);
Result.VarPos.isPointer := True;
Result.VarType := FPType;
end
else
begin
IndexVar := inherited Eval(Op, IndexVar, ALeft, ARight, Flags, Offset, Pos);
Result := //Result := Pointer[Index]^
Eval(
op_Deref,
Dest,
IndexVar,
NullResVar,
[],
Offset,
Pos
);
IndexVar.Spill(1);
end;
finally
FBaseType := tmpType;
Result.CopyFlags(ALeft);
end;
end
else if (op = op_Assign) and (BaseType = ltDynArray) and CompatibleWith(ARight.VarType) then
begin
Dest := NullResVar;
Result := ALeft;
if (ALeft.VarPos.MemPos = mpStack) then
begin
tmpVar := FCompiler.getTempVar(Self);
ALeft := _ResVar.New(tmpVar);
end;
if (ARight.VarType.BaseType = ltDynArray) then
begin
{FCompiler.EmitCode(
'if (System.Pointer(Left) <> System.Pointer(Right)) then begin' +
' System.SetLength(Left, 0);' +
' System.Pointer(Left) := System.Pointer(Right);' +
' if (System.Pointer(Left) <> nil) then' +
' System.Inc(System.PtrInt(System.Pointer(Left)[-' +
IntToStr(SizeOf(SizeInt)+SizeOf(PtrInt)) +
']^));' +
'end;'
, ['Left', 'Right'], [], [ALeft, ARight], Offset, Pos)}
with TLapeTree_If.Create(FCompiler, Pos) do
try
Condition := TLapeTree_Operator.Create(op_cmp_NotEqual, Self.FCompiler, Pos);
with TLapeTree_Operator(Condition) do
begin
Left := TLapeTree_ResVar.Create(ALeft.IncLock(), Condition);
Right := TLapeTree_ResVar.Create(ARight.IncLock(), Condition);
end;
Body := TLapeTree_InternalMethod_SetLength.Create(Condition);
with TLapeTree_InternalMethod_SetLength(Body) do
begin
addParam(TLapeTree_ResVar.Create(ALeft.IncLock(), Body));
addParam(TLapeTree_Integer.Create(0, Body));
end;
Compile(Offset).Spill(1);
finally
Free();
end;
inherited;
end
else if (ARight.VarType is TLapeType_StaticArray) then
begin
{FCompiler.EmitCode(
'System.SetLength(Left, '+IntToStr(
TLapeType_StaticArray(ARight.VarType).Range.Hi -
TLapeType_StaticArray(ARight.VarType).Range.Lo + 1) +
');' +
'PType(@Left[0])^ := Right;',
['PType', 'Left', 'Right'], [FCompiler.getTypeVar(FCompiler.getPointerType(ARight.VarType))],
[ALeft, ARight], Offset, Pos)}
with TLapeType_StaticArray(ARight.VarType).Range do
VarSetLength(ALeft.IncLock(), _ResVar.New(FCompiler.getConstant(Hi - Lo + 1)), Offset, Pos);
with TLapeTree_Operator.Create(op_Index, FCompiler, Pos) do
try
Left := TLapeTree_ResVar.Create(ALeft.IncLock(), FCompiler, Pos);
Right := TLapeTree_Integer.Create(0, Left);
CompilerOptions := CompilerOptions - [lcoRangeCheck];
IndexVar := Compile(Offset);
finally
Free();
end;
IndexVar.VarType := ARight.VarType;
with TLapeTree_Operator.Create(op_Assign, FCompiler, Pos) do
try
Left := TLapeTree_ResVar.Create(IndexVar.IncLock(), FCompiler, Pos);
Right := TLapeTree_ResVar.Create(ARight.IncLock(), Left);
Compile(Offset);
finally
Free();
end;
end
else
LapeException(lpeImpossible);
if (tmpVar <> nil) then
begin
FCompiler.Emitter._PopVarToStack(Size, tmpVar.Offset, Offset, Pos);
ALeft.Spill(1);
end;
end
else if (op = op_Plus) and (BaseType = ltDynArray) and HasType() and FPType.CompatibleWith(ARight.VarType) then
begin
Result := NullResVar;
Result.VarType := Self;
FCompiler.getDestVar(Dest, Result, op);
if (Result.VarPos.MemPos = mpStack) then
begin
tmpVar := FCompiler.getTempVar(Self);
Result := _ResVar.New(tmpVar);
end;
wasConstant := not Result.Writeable;
if wasConstant then
Result.Writeable := True;
Result := Eval(op_Assign, tmpResVar, Result, ALeft, [], Offset, Pos);
{FCompiler.EmitCode(
'System.SetLength(Result, System.Length(Result) + 1);' +
'Result[System.High(Result)] := Right;'
, ['Result', 'Right'], [], [Result, ARight], Offset, Pos);}
IndexVar := _ResVar.New(FCompiler.getTempVar(ltSizeInt));
with TLapeTree_Operator.Create(op_Plus, FCompiler, Pos) do
try
Left := TLapeTree_Operator.Create(op_Assign, FCompiler, Pos);
Right := TLapeTree_Integer.Create(1, Left);
with TLapeTree_Operator(Left) do
begin
Left := TLapeTree_ResVar.Create(IndexVar.IncLock(2), FCompiler, Pos);
Right := TLapeTree_InternalMethod_Length.Create(Left);
TLapeTree_InternalMethod_Length(Right).addParam(TLapeTree_ResVar.Create(Result.IncLock(), Left));
end;
Dest := VarResVar;
tmpResVar := Compile(Offset);
finally
Free();
end;
VarSetLength(Result.IncLock(), tmpResVar, Offset, Pos);
with TLapeTree_Operator.Create(op_Assign, FCompiler, Pos) do
try
Left := TLapeTree_Operator.Create(op_Index, FCompiler, Pos);
with TLapeTree_Operator(Left) do
begin
CompilerOptions := CompilerOptions - [lcoRangeCheck];
Left := TLapeTree_ResVar.Create(Result.IncLock(), FCompiler, Pos);
Right := TLapeTree_ResVar.Create(IndexVar.IncLock(), Left);
end;
Right := TLapeTree_ResVar.Create(ARight.IncLock(), Left);
Compile(Offset);
finally
Free();
end;
IndexVar.Spill(1);
if wasConstant then
Result.Writeable := False;
end
else if (op = op_Plus) and (BaseType = ltDynArray) and CompatibleWith(ARight.VarType) then
begin
Result := NullResVar;
Result.VarType := Self;
FCompiler.getDestVar(Dest, Result, op);
if (Result.VarPos.MemPos = mpStack) then
begin
tmpVar := FCompiler.getTempVar(Self);
Result := _ResVar.New(tmpVar);
end;
wasConstant := not Result.Writeable;
if wasConstant then Result.Writeable := True;
Result := Eval(op_Assign, tmpResVar, Result, ALeft, [], Offset, Pos);
with TLapeTree_InternalMethod_Insert.Create(FCompiler, Pos) do
try
addParam(TLapeTree_ResVar.Create(ARight, FCompiler, Pos));
addParam(TLapeTree_ResVar.Create(Result.IncLock(), FCompiler, Pos));
Node := TLapeTree_InternalMethod_Length.Create(FCompiler, Pos);
TLapeTree_InternalMethod_Length(Node).addParam(
TLapeTree_ResVar.Create(Result.IncLock(), FCompiler)
);
addParam(Node as TLapeTree_ExprBase);
Compile(Offset);
finally
Free();
end;
if wasConstant then Result.Writeable := False;
end
else
Result := inherited;
end;
function TLapeType_StaticArray.getPadding: SizeInt;
begin
if HasType() then
Result := (FRange.Hi - FRange.Lo + 1) * FPType.Padding
else
Result := inherited;
end;
function TLapeType_StaticArray.getSize: SizeInt;
begin
if (FSize = 0) then
begin
if (not HasType()) then
FSize := -1;
FSize := (FRange.Hi - FRange.Lo + 1) * FPType.Size;
end;
Result := inherited;
end;
function TLapeType_StaticArray.getAsString: lpString;
begin
if (FAsString = '') and (FBaseType = ltStaticArray) then
begin
FAsString := 'array [' + lpString(IntToStr(FRange.Lo)) + '..' + lpString(IntToStr(FRange.Hi)) + ']';
if HasType() then
FAsString := FAsString + ' of ' + FPType.AsString;
end;
Result := inherited;
end;
constructor TLapeType_StaticArray.Create(ARange: TLapeRange; ArrayType: TLapeType; ACompiler: TLapeCompilerBase; AName: lpString = ''; ADocPos: PDocPos = nil);
begin
inherited Create(ArrayType, ACompiler, AName, ADocPos);
FBaseType := ltStaticArray;
if (ArrayType <> nil) and ArrayType.NeedInitialization then
FInit := bTrue
else
FInit := bFalse;
FRange := ARange;
end;
function TLapeType_StaticArray.VarToString(AVar: Pointer): lpString;
var
i: Integer;
Builder: TLapeStringList;
begin
Result := '[';
if (AVar <> nil) and HasType() then
try
Builder := TLapeStringList.Create('', dupAccept, True, False);
for i := 0 to FRange.Hi - FRange.Lo do
Builder.Add(FPType.VarToString(Pointer(PtrInt(AVar) + (FPType.Size * i))));
Result := Result + Builder.Implode(', ');
finally
Builder.Free();
end;
Result := Result + ']';
end;
function TLapeType_StaticArray.VarLo(AVar: Pointer = nil): TLapeGlobalVar;
begin
if (FCompiler = nil) then
Result := nil
else
Result := FCompiler.getConstant(FRange.Lo, ltSizeInt, False, True);
end;
function TLapeType_StaticArray.VarHi(AVar: Pointer = nil): TLapeGlobalVar;
begin
if (FCompiler = nil) then
Result := nil
else
Result := FCompiler.getConstant(FRange.Hi, ltSizeInt, False, True);
end;
function TLapeType_StaticArray.CreateCopy(DeepCopy: Boolean = False): TLapeType;
type
TLapeClassType = class of TLapeType_StaticArray;
begin
Result := TLapeClassType(Self.ClassType).Create(FRange, FPType, FCompiler, Name, @_DocPos);
with TLapeType_StaticArray(Result) do
begin
inheritManagedDecls(Self, not DeepCopy);
TypeID := Self.TypeID;
FBaseType := Self.BaseType;
end;
end;
function TLapeType_StaticArray.NewGlobalVar(AName: lpString = ''; ADocPos: PDocPos = nil): TLapeGlobalVar;
begin
Result := NewGlobalVarP(nil, AName, ADocPos);
end;
function TLapeType_StaticArray.EvalRes(Op: EOperator; Right: TLapeType = nil; Flags: ELapeEvalFlags = []): TLapeType;
begin
if (op = op_Assign) and (BaseType = ltStaticArray) and HasType() and (Right <> nil) and (Right is ClassType) and
((TLapeType_StaticArray(Right).Range.Hi - TLapeType_StaticArray(Right).Range.Lo) = (Range.Hi - Range.Lo)) and
FPType.CompatibleWith(TLapeType_StaticArray(Right).FPType)
then
Result := Self
else
Result := inherited;
end;
function TLapeType_StaticArray.EvalConst(Op: EOperator; Left, Right: TLapeGlobalVar; Flags: ELapeEvalFlags): TLapeGlobalVar;
var
i: Integer;
LeftVar, RightVar: TLapeGlobalVar;
begin
Assert(FCompiler <> nil);
Assert((Left = nil) or (Left.VarType is TLapeType_Pointer));
if (op = op_Index) and (Left <> nil) and (Right <> nil) then
begin
Assert(HasType());
RangeCheck(Left, Right, Flags);
Result := FPType.NewGlobalVarP(Pointer(PtrInt(Left.Ptr) + (FPType.Size * (Right.AsInteger - FRange.Lo))));
Result.CopyFlags(Left);
end
else if (op = op_Assign) and (BaseType = ltStaticArray) and (Left <> nil) and (Right <> nil) and CompatibleWith(Right.VarType) then
begin
LeftVar := nil;
RightVar := nil;
for i := 0 to FRange.Hi - FRange.Lo do
try
LeftVar := FPType.NewGlobalVarP(Pointer(PtrInt(Left.Ptr) + (FPType.Size * i)));
RightVar := FPType.NewGlobalVarP(Pointer(PtrInt(Right.Ptr) + (FPType.Size * i)));
FPType.EvalConst(op_Assign, LeftVar, RightVar, []);
finally
if (LeftVar <> nil) then
FreeAndNil(LeftVar);
if (RightVar <> nil) then
FreeAndNil(RightVar);
end;
Result := Left;
end
else
Result := inherited;
end;
function TLapeType_StaticArray.Eval(Op: EOperator; var Dest: TResVar; Left, Right: TResVar; Flags: ELapeEvalFlags; var Offset: Integer; Pos: PDocPos = nil): TResVar;
var
tmpVar, LeftVar: TResVar;
wasConstant: Boolean;
CounterVar, IndexLow, IndexHigh: TLapeVar;
LoopOffset: Integer;
begin
Assert(FCompiler <> nil);
Assert(Left.VarType is TLapeType_Pointer);
tmpVar := NullResVar;
LeftVar := NullResVar;
if (op = op_Index) then
try
RangeCheck(Left, Right, Flags, Offset, Pos);
wasConstant := not Left.Writeable;
if wasConstant then
Left.Writeable := True;
if (not Left.VarPos.isPointer) or (Left.VarPos.Offset > 0) then
LeftVar := Eval(op_Addr, tmpVar, Left, NullResVar, [], Offset, Pos)
else
begin
LeftVar := Left.IncLock();
LeftVar.VarPos.isPointer := False;
LeftVar.VarType := FCompiler.getPointerType(PType, PConst);
end;
if (FRange.Lo = 0) then
Result := inherited Eval(Op, Dest, LeftVar, Right, Flags - [lefRangeCheck], Offset, Pos)
else
begin
if Right.isConstant and (Right.VarPos.MemPos = mpMem) then
tmpVar := _ResVar.New(FCompiler.getConstant(Right.VarPos.GlobalVar.AsInteger - FRange.Lo))
else
begin
if Right.HasType() and Right.VarType.IsOrdinal() then
Right.VarType := FCompiler.getBaseType(Right.VarType.BaseIntType);
IndexLow := FCompiler.getConstant(FRange.Lo, ltSizeInt);
tmpVar := Right.VarType.Eval(op_Minus, tmpVar, Right, _ResVar.New(IndexLow), [], Offset, Pos);
end;
Result := //Result := @Pointer[Index - Lo]^
inherited Eval(
Op,
Dest,
LeftVar,
tmpVar,
Flags - [lefRangeCheck],
Offset,
Pos
);
tmpVar.Spill(1);
end;
finally
if (not Left.VarPos.isPointer) or (Left.VarPos.Offset > 0) then
LeftVar.Spill(1);
Left.Writeable := not wasConstant;
Result.CopyFlags(Left);
end
else if (op = op_Assign) and (BaseType = ltStaticArray) and CompatibleWith(Right.VarType) then
if (not NeedInitialization) and Equals(Right.VarType) and (Size > 0) then
begin
Left.VarType := FCompiler.getBaseType(DetermineIntType(Size, False));
if Left.HasType() then
begin
Right.VarType := Left.VarType;
Result := Left.VarType.Eval(op_Assign, Dest, Left, Right, [], Offset, Pos);
end
else
begin
Left.VarType := Self;
if (Left.VarPos.MemPos = mpStack) and (not Left.VarPos.ForceVariable) then
begin
FCompiler.Emitter._GrowStack(Size, Offset, Pos);
Left.VarPos.ForceVariable := True;
IndexLow := FCompiler.getTempVar(ltPointer, 1);
FCompiler.Emitter._Eval(getEvalProc(op_Addr, ltUnknown, ltUnknown), _ResVar.New(IndexLow), Left, NullResVar, Offset, Pos);