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WvN.Pascal.Model.pas
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unit WvN.Pascal.Model;
interface
uses Generics.Collections, Generics.Defaults, Classes, Windows;
const
Keywords:array[0..65] of string=
('at','and','array','as','asm','begin','case','class','const','constructor',
'destructor','dispinterface','div','do','downto','else','end','except','exports',
'file','finalization','finally','for','function','goto','if','implementation',
'in','inherited','initialization','inline','interface','is','label','library',
'mod','nil','not','object','of','or','out','packed','procedure','program',
'property','raise','record','repeat','resourcestring','set','shl','shr',
'string','then','threadvar','to','try','type','unit','until','uses','var',
'while','with','xor');
type
TLanguage = (Delphi,DWS);
TDir = (none,&in,&out,inout);
TVisibility = (&DefaultVisibility,&StrictPrivate,&Private,&Public,&Published);
TRoutineType = (&function,&procedure,&constructor,&destructor);
TClassKind = (&class,&record,&object,&unit);
const
cClassKind : array[TClassKind] of string = ('class','record','object','unit');
cDirPascal : array[TDir] of string=('','const','out','var');
cVisibility : array[TVisibility] of string=('','strict privateconst','private','public','published');
cRoutineType: array[TRoutineType] of string=('function','procedure','constructor','destructor');
type
TPascalUnit=class;
TSourceInfo=record
Position:integer;
Length:integer;
constructor Create(aPosition:integer; aLength:integer);
end;
TPascalElement=class;
{
IPascalElement=interface
procedure AddChild(const el:IPascalElement);
function GetChildren(Index: integer): TPascalElement;
function ChildIndexByName(const Name:string):integer;
function ToString:string;
function ToPascal:string;
function Count:integer;
procedure SetOwner(aOwner: IPascalElement);
function GetName: string;
property Children[Index:integer]:TPascalElement read GetChildren;
property Name:string read GetName ;
end;
}
TPascalElement=class
private
function GetName: string;
procedure SetOwner(aOwner: TPascalElement);
protected
FChildren:TObjectList<TPascalElement>;
FOwner:TPascalElement;
FName : String;
FVisible:Boolean;
procedure AddChild(const el:TPascalElement);
function GetChildren(Index: integer): TPascalElement;
public
Sourceinfo:TSourceInfo;
Renderinfo:TSourceInfo;
function ChildIndexByName(const Name:string):integer;
function ToString:string;reintroduce;virtual;
function ToPascal:string;virtual;abstract;
function Count:integer;
procedure SetDefaultVisible;
property Owner:TPascalElement read FOwner;
constructor Create(aOwner:TPascalElement);virtual;
destructor Destroy; override;
property Children[Index:integer]:TPascalElement read GetChildren; default;
property Name:string read GetName write FName;
property Visible:Boolean read FVisible write FVisible;
end;
TVariable=class(TPascalElement)
strict private
FHasValue:Boolean;
FDir:TDir;
FType:string;
FValue:variant;
FVisibility:TVisibility;
FIsStatic:Boolean;
FComment:string;
public
constructor Create(AOwner:TPascalElement; aName:string; aType:string;aDir:TDir=TDir.none; aIsStatic:Boolean=false; aHasValue:Boolean=false; aValue:string=''; aComment:string=''); reintroduce;
function ToString:string;override;
function ToPascal:String;override;
property HasValue:Boolean read FHasValue;
property Dir:TDir read FDir;
property &Type:string read FType;
property Value:variant read FValue;
property Visibility:TVisibility read FVisibility write FVisibility;
property IsStatic:Boolean read FIsStatic;
property Comment:string read FComment;
end;
TVariableList=class(TPascalElement)
public
function getLongestName:integer;
function ToPascal(Indent:Boolean):String;reintroduce;
end;
TArrayDef1D=class(TPascalElement)
public
itemType:string;
rangeMin,rangeMax:string;
Items:TArray<string>;
function ToPascal:string;override;
function ToString:string;override;
end;
TArrayDef2D=class(TPascalElement)
public
itemType:string;
ranges:array[0..1] of
record
rangeMin,rangeMax:string;
end;
Items:TArray<TArray<string>>;
function ToPascal:string;override;
function ToString:string;override;
end;
TEnumItem = record
Index, Value:integer;
Name:string;
Comment:string;
MaxNameLen,MaxValueLen:integer;
class operator implicit(const e:TEnumItem):string;
end;
TEnumDef=class(TPascalElement)
public
Items:TArray<TEnumItem>;
function ToPascal:string;override;
end;
TCode=class(TPascalElement)
private
function GetLineCount: integer;
public
Lines:TList<string>;
procedure Add(const s:String);
function ToPascal:String;override;
procedure Cleanup;
procedure Align;
destructor Destroy; override;
property LineCount:integer read GetLineCount;
constructor Create(aOwner:TPascalElement; c:TArray<string>);reintroduce;
end;
TRoutine=class(TPascalElement)
public
RoutineType:TRoutineType;
ReturnType:string;
Parameters:TVariableList;
LocalVars:TVariableList;
Code:TCode;
&Override:Boolean;
&Overload:Boolean;
&Inline:Boolean;
&Static:Boolean;
&Virtual:Boolean;
ClassName:string;
Comment:string;
Visibility:TVisibility;
constructor Create(
aOwner:TPascalElement;
aName:String;
aClassName:string;
aRoutineType:TRoutineType;
aReturnType:string;
aParameters:TVariableList;
aLocalVars:TVariableList;
aCode:TCode;
aOverride:Boolean=false;
aOverload:Boolean=false;
aInline:Boolean=false;
aStatic:Boolean=false;
aVirtual:Boolean=false;
aComment:string='');reintroduce;
procedure Cleanup;
function ToString:string;override;
function ToDeclarationPascal:String;
function ToImplementationPascal(aClassName:string):String;
function Equals(Obj: TObject): Boolean; override;
end;
TClassDef=class(TPascalElement)
public
FKind:TClassKind;
FParentType:string;
FConsts:TVariableList;
FMembers:TVariableList;
FMethods:TArray<TRoutine>;
FIsPacked:boolean;
function AddRoutine(const m:TRoutine):boolean;
function getMethodByName(const n:string):TRoutine;
function ToPascalDeclaration:string;
function ToPascalImplementation:string;
function ToString:string;override;
constructor Create(aOwner:TPascalElement;aTypename:string; aMembers:TVariableList; aKind:TClassKind);reintroduce;
end;
TUsesListItem=class(TPascalElement)
end;
TUsesList=class(TPascalElement)
public
&Unit:TPascalUnit;
constructor Create(aOwner:TPascalElement);override;
procedure AddUnit(const s: string);
function ToPascal:string;override;
end;
TCase=class(TPascalElement)
strict private
FCode:TCode;
procedure SetCode(const Value: TCode);
public
Id:string;
function ToPascal(aIndent:integer=6; aAlign:integer=0):string;reintroduce;
property Code:TCode read FCode write SetCode;
end;
TSwitch=class(TPascalElement)
public
Switch:string;
Cases:TArray<TCase>;
Indent:integer;
function ToPascal:string;override;
end;
TIfStatement=class(TPascalElement)
private
Condition,
IfTrue,
IfFalse : TCode;
public
constructor Create(aOwner:TPascalElement; aCondition, aIfTrue, aIfFalse : TCode);reintroduce;
function ToPascal:string;override;
end;
TPascalUnit=class(TPascalElement)
public
usesListIntf:TUsesList;
usesListImpl:TUsesList;
Comments:TArray<string>;
GlobalVars:TVariableList;
GlobalArrays1D:TArray<TArrayDef1D>;
GlobalArrays2D:TArray<TArrayDef2D>;
Enums:TArray<TEnumDef>;
Classes:TArray<TClassDef>;
ImplementationVars:TVariableList;
&Initialization:TCode;
&Finalization:TCode;
CaseStatements:TArray<TSwitch>;
Defines:TStringList;
constructor Create(aOwner:TPascalElement);override;
destructor Destroy;override;
function getClassByName(s:string):TClassDef;
function AddClass(c:TClassDef):TClassDef;
function ToString:string; override;
function ToPascal:string;override;
end;
TLoopOperator=(EQ,LT,LT_EQ,GT,GT_EQ);
TLoop=class(TPascalElement)
type
TDir=(up,down);
var
IndexerVar:TVariable;
Op:TLoopOperator;
Dir:TLoop.TDir;
StartVal,EndVal:string;
function ToPascal:string;override;
end;
function Esc(Keyword:string):string;
implementation
uses System.RegularExpressions, SysUtils, Math;
function Esc(Keyword:string):string;
var
I: Integer;
begin
Keyword := Keyword.Replace('*','');
for I := 0 to High(Keywords) do
if SameText(Keywords[I],Keyword) then
Exit('&'+Keyword);
Exit(Keyword);
end;
function MakePascalCase(const aString:String):String;
var
I:Integer;
const
Chars=[' ','-','_','/','\','&','*','|','(',')','[',']','{','}','.',';',',','<','>'];
begin
if aString='' then
Exit;
Result := UpCase(aString[1]);
for I := 2 to Length(aString) do
if CharInSet(aString[I-1], Chars) then
Result := Result + UpCase(aString[I])
else
Result := Result + aString[I];
for I := Length(Result) downto 1 do
if CharInSet(Result[I],Chars) then
Delete(Result,I,1);
end;
constructor TVariable.Create(AOwner:TPascalElement; aName, aType: string;aDir:TDir=TDir.none;aIsStatic:Boolean=false; aHasValue:Boolean=false;aValue:string='';aComment:string='');
begin
inherited Create(AOwner);
FName := aName.Trim;
FType := aType.Trim;
FDir := aDir;
FIsStatic := aIsStatic;
FHasValue := aHasValue;
FValue := aValue.Trim;
FComment := aComment;
if FHasValue then
if FType<>'' then
if FDir = TDir.&in then
begin
// found a const variable declaration, with a type.
if FType = 'integer' then FType := '' else
if FType = 'double' then FType := '' else
if FType = 'float' then FType := '' else
if FType = 'single' then FType := '' else
if FType = 'byte' then FType := '' else
if FType = 'int64' then FType := '' else
if FType = 'cardinal' then FType := '' else
FDir := TDir.inout;
end;
end;
function TVariable.ToPascal: String;
begin
Result := Esc(FName);
if FType<>'' then Result := Result + ':' + Esc(FType);
if FHasValue then Result := Result + ' = '+ FValue;
if FComment<>'' then Result := Result + '{ '+FComment+' }';
end;
function TVariable.ToString: string;
begin
REsult := FName + ': ' + FType;
end;
{ TVariableList }
function TVariableList.getLongestName: integer;
var
I,l: Integer;
begin
Result := 0;
for I := 0 to Count-1 do
begin
l := length(esc(FChildren[I].Name));
if l > Result then
Result := l;
end;
end;
function TVariableList.ToPascal(indent:Boolean): String;
var longest,i:integer;
align:boolean;
Prev,Curr,Next:TVariable;
begin
Result := '';
longest := getLongestName;
align := true;
// don't align single row list (as used in function parameters)
if not indent then
align := false;
// don't align if we only have really short names
if getLongestName < 8 then
Align := false;
// if we have a single item, don't bother aligning..
if self.Count<2 then
Align := false;
Prev := nil;
Next := nil;
// combine consecutive parameters of the same type wherever possible
for i := 0 to Count - 1 do
begin
if I > 0 then
Prev := TVariable( FChildren[i - 1] );
Curr := TVariable( FChildren[i ] );
if I < Count-1 then
Next := TVariable( FChildren[i + 1] );
if Indent then
if (I=0)
or (Prev.Visibility <>
Curr.Visibility) then
begin
if Curr.Visibility<>TVisibility.DefaultVisibility then
Result := Result + cVisibility[Curr.Visibility] + sLineBreak+ ' ';
end;
// for the first in a series, write the direction if given
if (I = 0)
or (Prev.Dir <> Curr.Dir)
or (Prev.&Type <> Curr.&Type) then
begin
if Indent then
if I = 0 then
if Curr.Dir = TDir.none then
if Result.Trim = '' then
Result := cDirPascal[TDir.inout] + sLineBreak + ' '
else
Result := Result + cDirPascal[TDir.inout] + sLineBreak + ' ';
if (I=0) or (Prev.Dir <> Curr.Dir) then
if (I=0) then
Result := cDirPascal[Curr.Dir]
else
if Indent then
// switched from list of consts to vars
Result := Result.Trim + sLineBreak +sLineBreak +'' + cDirPascal[Curr.Dir]
else
Result := Result.Trim + cDirPascal[Curr.Dir];
if not Indent then
Result := Result + ' '
else
if cDirPascal[Curr.Dir] <> '' then
Result := Result.TrimRight + sLineBreak + ' ';
end;
// if the next argument is of another type or direction, write the type
if i < Count - 1 then
if (Next.dir = Curr.dir) then
if (Next.&Type = Curr.&Type) then
if not Curr.HasValue then
begin
Result := Result + Esc(Curr.FName.Trim) + ', ';
if align then
Result := Result + sLineBreak+' ';
continue;
end;
if Align then
Result := Result +copy(Esc(Curr.FName)+ StringOfChar(' ',longest) ,1,longest)
else
Result := Result + Esc(Curr.FName);
if Curr.&Type<>'' then
begin
Result := Result + ' : ';
if Curr.&Type='^' then
Result := Result + 'pointer'
else
begin
if Curr.FName.StartsWith('*') then
Result := Result + '^';
Result := Result + Esc(Curr.&Type);
end;
end;
if Curr.HasValue then
Result := Result + ' = '+ Curr.Value;
if Curr.Comment<>'' then
Result := Result + ' { '+ Curr.Comment + ' } ';
// add a separator, unless it's the last argument
if i < Count - 1 then
begin
Result := Result + ';';
if Align then
Result := REsult+sLineBreak+' ';
end;
end;
Result := Result.Replace(', ',', ');
if Indent then
begin
if not Result.Trim.EndsWith(';') then
Result := Result.Trim + ';';
Result := Result +sLineBreak;
end;
end;
{ TRoutine }
procedure TRoutine.Cleanup;
begin
if Assigned(Code) then
Code.Cleanup;
end;
constructor TRoutine.Create(
aOwner:TPascalElement;
aName:String;
aClassName:string;
aRoutineType:TRoutineType;
aReturnType:string;
aParameters:TVariableList;
aLocalVars:TVariableList;
aCode:TCode;
aOverride:Boolean=false;
aOverload:Boolean=false;
aInline:Boolean=false;
aStatic:Boolean=false;
aVirtual:Boolean=false;
aComment:string='');
begin
inherited Create(aOwner);
Sourceinfo := default(TSourceInfo);
FName := aName ;
ClassName := aclassName ;
RoutineType := aRoutineType ;
ReturnType := aReturnType ;
if ReturnType='' then
if RoutineType = TRoutineType.&function then
RoutineType := TRoutineType.&procedure;
if ReturnType='void' then
RoutineType := TRoutineType.&procedure;
Parameters := aParameters ;
aParameters.SetOwner(self);
LocalVars := aLocalVars ;
LocalVars.SetOwner(self);
Code := aCode ;
Code.SetOwner(self);
&Override := aOverride ;
&Overload := aOverload ;
&Inline := aInline ;
&Static := aStatic ;
&Virtual := aVirtual ;
Comment := aComment ;
Visibility := TVisibility.DefaultVisibility;
end;
function TRoutine.Equals(Obj: TObject): Boolean;
var r:TRoutine; i:Integer;
begin
if not (Obj is TRoutine) then
Exit(False);
if Obj=self then
Exit(True);
r := TRoutine(Obj);
if not SameText(r.Name,Self.Name) then
Exit(False);
if r.Parameters.Count<>Self.Parameters.Count then
Exit(False);
for I := 0 to self.Parameters.Count-1 do
begin
if not SameText(Parameters[I].Name, r.Parameters[I].Name) then
Exit(False);
if not SameText(TVariable(Parameters[I]).&Type, TVariable(r.Parameters[I]).&Type) then
Exit(False);
end;
Exit(True);
end;
function TRoutine.ToDeclarationPascal: String;
var sl:TStringBuilder; s:string;
begin
sl := TStringBuilder.Create;
try
if Trim(Comment) <> '' then
begin
sl.AppendLine(' /// <summary>');
for s in Comment.Split([sLineBreak]) do
sl.AppendLine(' /// '+s);
sl.AppendLine(' /// </summary>');
end;
sl.Append(' ');
if &Static then
if (FOwner=nil) or (TClassDef(FOwner).FKind <> TClassKind.&unit) then
sl.Append('class ');
sl.Append(cRoutineType[RoutineType]);
sl.Append(' ');
sl.Append(Esc(self.FName));
if Parameters.Count > 0 then
sl.Append( '(' + Parameters.ToPascal(false)+ ')' );
if Self.RoutineType=TRoutineType.&function then
sl.Append(':'+Self.ReturnType);
if sl.ToString.Trim<>';' then
sl.Append(';');
if &Override then sl.Append('override;');
if &Overload then sl.Append('overload;');
if &Inline then sl.Append('inline;');
if &Static then
if (FOwner=nil) or (TClassDef(FOwner).FKind <> TClassKind.&unit) then
sl.Append('static;');
if &Virtual then sl.Append('virtual;');
Result := sl.ToString;
finally
sl.Free;
end;
end;
function TRoutine.ToImplementationPascal(aClassName: string): String;
var sl:TStringBuilder; s:string;
// c: string;
begin
sl := TStringBuilder.Create;
try
if Comment.Trim<>'' then
begin
sl.AppendLine('/// <summary>');
for s in Comment.Split([sLineBreak]) do
sl.AppendLine('/// '+s);
sl.AppendLine('/// </summary>');
end;
sl.Append(cRoutineType[RoutineType]);
sl.Append(' ');
if aClassName<>'' then
if Esc(aClassName)<>'TGlobal' then
sl.Append(Esc(aClassName) + '.');
sl.Append(Esc(self.FName));
if Parameters.Count > 0 then
sl.Append( '(' + Parameters.ToPascal(false) + ')' );
if Self.RoutineType=TRoutineType.&function then
sl.Append(':'+Self.ReturnType);
sl.Append(';');
if &Overload then sl.Append('overload;');
if &Inline then sl.Append('inline;');
sl.AppendLine;
if self.LocalVars.Count>0 then
sl.Append( LocalVars.ToPascal(true) );
sl.AppendLine( 'begin');
Code.Cleanup;
Code.Align;
code.Renderinfo.Position := sl.Length+1;
sl.AppendLine(code.ToPascal);
code.Renderinfo.Length := sl.Length - code.Renderinfo.Position ;
sl.AppendLine( 'end;');
Result := sl.ToString;
finally
sl.Free;
end;
end;
function TRoutine.ToString: string;
begin
Result := FName+'( )';
end;
{ TClassDef }
function TClassDef.AddRoutine(const m: TRoutine):Boolean;
var i:integer;
begin
Result := True;
for I := 0 to high(FMethods) do
begin
if SameText(FMethods[I].Name ,m.Name) then
begin
FMethods[I].Overload := True;
m.Overload := True;
end;
if FMethods[I].Equals(m) then
begin
Result := False;
Break;
end;
end;
if Result then
FMethods := FMethods + [m]
else
if FMethods[I].Visibility = DefaultVisibility then
FMethods[I].Visibility := m.Visibility;
end;
constructor TClassDef.Create(aOwner:TPascalElement; aTypename: string; aMembers: TVariableList;aKind:TClassKind);
begin
inherited Create(aOwner);
FKind := aKind;
FIsPacked := false;
FConsts := TVariableList.Create(self);
FConsts.Name := 'Consts';
if aMembers=nil then
FMembers := TVariableList.Create(self)
else
FMembers := aMembers;
FMembers.Name := 'Members';
FMembers.FOwner := self;
FName := aTypename;
FIsPacked := false;
end;
function TClassDef.getMethodByName(const n: string): TRoutine;
var
r: TRoutine;
begin
Result := nil;
for r in self.FMethods do
if SameText(r.FName,n) then
Exit(r);
end;
function TClassDef.ToPascalDeclaration: string;
var sl:TStringList;
m,n: TRoutine;
begin
sl := TStringList.Create;
try
if FKind <> TClassKind.&unit then
sl.Add('type');
case FKind of
&class :
if FParentType='' then
sl.Add(Esc(FName) + ' = class')
else
sl.Add(Esc(FName) + ' = class('+FParentType.Trim +')');
&record :
begin
if FIsPacked then
sl.Add(Esc(FName) + ' = packed record')
else
sl.Add(Esc(FName) + ' = record');
end;
&object : sl.Add(Esc(FName) + ' = object('+FParentType.Trim+')');
&unit : ;
end;
if FConsts.Count>0 then
begin
sl.Add('const');
sl.Add( FConsts.ToPascal(true) );
end;
if FMembers.Count>0 then
begin
if FConsts.Count>0 then
begin
sl.Add('');
sl.Add('var');
end;
sl.Add( FMembers.ToPascal(true).TrimRight );
end;
for m in FMethods do
for n in FMethods do
if m <> n then
if m.Name = n.Name then
begin
m.Overload := True;
n.Override := True;
end;
for m in FMethods do
sl.Add(m.ToDeclarationPascal);
if self.FKind <> &unit then
sl.Add( 'end;');
result := sl.Text;
finally
sl.Free;
end;
end;
function TClassDef.ToPascalImplementation: string;
var m:TRoutine; sl:TStringList;
begin
sl := TStringList.Create;
try
if length(FMethods)=0 then
Exit('');
if self.FKind<>&unit then
begin
sl.Add( format('{ %s }',[self.FName]) );
sl.Add('' );
end;
for m in FMethods do
begin
m.Renderinfo.Position := sl.Text.Length+1;
sl.Add(m.ToImplementationPascal( FName ));
m.Code.Renderinfo.Position := m.Code.Renderinfo.Position + m.Renderinfo.Position;
m.Renderinfo.Length := sl.Text.Length - m.Renderinfo.Position-1;
sl.Add('');
end;
Result := sl.Text;
finally
sl.free;
end;
end;
function TClassDef.ToString: string;
begin
if Self.FKind=&unit then
Result := 'Global'
else
Result := cClassKind[ self.FKind ] + ' ' + FName;
end;
{ TCode }
procedure TCode.Add(const s: String);
begin
Lines.Add(s);
end;
procedure DoAlign(Lines:TList<string>; var p:integer; aFirstLine,aLastLine,MaxPos:integer);
var J,t: Integer; s,oldLine:string;
begin
if MaxPos>0 then
begin
for J := aFirstLine to aLastLine do
begin
oldLine := Lines[J];
t := Pos(':=',OldLine);
s := StringOfChar(' ', MaxPos-t);
if P>3 then
Insert(s,OldLine,t);
Lines[J] := OldLine;
end;
end;
end;
procedure TCode.Align;
var
Line:string; i,First,Last:integer;
p,maxPos:integer;
begin
First := -1;
Last := -1;
MaxPos := -1;
for I := 0 to Lines.Count-1 do
begin
Line := Lines[I];
P := Pos(':=',Line);
if (P>0) and (not Line.Contains('for')) then
begin
if maxPos<0 then
First := i;
MaxPos := Max(maxPos,P);
Last := i;
end
else
begin
DoAlign(Lines,P,First,last,maxPos);
P := -1;
First := -1;
MaxPos := -1;
end;
end;
if MaxPos>0 then
DoAlign(Lines,p,First,last,maxPos);
end;
procedure TCode.Cleanup;
var i,j:integer;
line:string;
begin
// clean code
j := 0;
for I := 0 to Lines.Count-1 do
begin
line := Lines[I];
if line='' then
Continue;
line := line.Replace(#9,' ');
if line.Trim<>'' then
begin
if lines.Count>1 then
begin
if I=0 then
if line.Trim='begin' then
Continue;
if I=lines.Count-1 then
if line.StartsWith('end') then
Continue;
end;
lines[J] := line;
inc(J);
end;
end;
for I := Lines.Count-1 downto J do
Lines.Delete(I);
end;
procedure TPascalElement.SetDefaultVisible;
procedure SetVisible(const el:TPascalElement);
var i:integer;
begin
if el = nil then
Exit;
if el is TVariableList then
if el.Count=0 then
el.Visible := False;
if el is TCode then
if el.Count=0 then
el.Visible := False;
if el is TUsesList then
if el.Count=0 then
el.Visible := False;
if el.Owner<>nil then
if not el.Owner.Visible then
el.Visible := False;
for I := 0 to el.Count-1 do
SetVisible(el.FChildren[i]);
end;
begin
SetVisible(self);
end;
constructor TCode.Create(aOwner:TPascalElement;c: TArray<string>);
begin
inherited Create(aOwner);