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unit IndentAsmParam;
{(*}
(*------------------------------------------------------------------------------
Delphi Code formatter source code
The Original Code is IndentAsmParam, released October 2007.
The Initial Developer of the Original Code is Anthony Steele.
Portions created by Anthony Steele are Copyright (C) 1999-2008 Anthony Steele.
All Rights Reserved.
Contributor(s): Anthony Steele.
The contents of this file are subject to the Mozilla Public License Version 1.1
(the "License"). you may not use this file except in compliance with the License.
You may obtain a copy of the License at http://www.mozilla.org/NPL/
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied.
See the License for the specific language governing rights and limitations
under the License.
Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 2 or later (the "GPL")
See http://www.gnu.org/licenses/gpl.html
------------------------------------------------------------------------------*)
{*)}
{$I JcfGlobal.inc}
interface
{
process to indent asm params to the required stop
this is similar to the alin processes
but it does not make the params the same indent as the furthest one
it puts them all at the same fixed indent, if possible
}
uses SwitchableVisitor;
type
TIndentAsmParam = class(TSwitchableVisitor)
private
fcLastProcessed: TObject;
protected
function EnabledVisitSourceToken(const pcNode: TObject): Boolean; override;
public
function IsIncludedInSettings: boolean; override;
end;
implementation
uses
ParseTreeNodeType, ParseTreeNode, Nesting,
TokenUtils,
SourceToken,
JcfSettings;
function IsFirstAsmParam(const pcSourceToken: TSourceToken): boolean;
var
lcPrev: TSourceToken;
begin
Result := False;
if not IsInsideAsm(pcSourceToken) then
exit;
// looking for the first asm param on the line
if not pcSourceToken.HasParentNode(nAsmParam, 4) then
exit;
lcPrev := pcSourceToken.PriorSolidToken;
if (lcPrev <> nil) then
begin
if lcPrev.HasParentNode(nAsmOpCode, 3) then
begin
Result := True;
end;
end;
end;
function GetAsmIndent(const pcSourceToken: TSourceToken): integer;
var
liIndentLevel: integer;
lcAsm: TParseTreeNode;
begin
liIndentLevel := pcSourceToken.Nestings.GetLevel(nlBlock);
// nesting of asm inside a proc is treaded differently from an asm proc
// which is not a good feature
// but can work with it
lcAsm := pcSourceToken.GetParentNode(nAsm);
if lcAsm = nil then
begin
Result := 0;
exit;
end;
if lcAsm.Parent.NodeType = nStatement then
begin
inc(liIndentLevel);
end;
Result := FormattingSettings.Indent.SpacesForIndentLevel(liIndentLevel);
Result := Result + FormattingSettings.SetAsm.ParamsIndent;
end;
function TIndentAsmParam.EnabledVisitSourceToken(const pcNode: TObject): Boolean;
var
lcSourceToken: TSourceToken;
liDesiredIndent: integer;
liActualIndent: integer;
begin
Result := False;
// prevent it being processed again after a space is inserted
if pcNode = fcLastProcessed then
exit;
lcSourceToken := TSourceToken(pcNode);
if IsFirstAsmParam(lcSourceToken) then
begin
liDesiredIndent := GetAsmIndent(lcSourceToken);
liActualIndent := lcSourceToken.XPosition - 1;
if liActualIndent < liDesiredIndent then
begin
InsertTokenBefore(lcSourceToken, NewSpace(liDesiredIndent - liActualIndent));
lcSourceToken.XPosition := liDesiredIndent;
fcLastProcessed := lcSourceToken;
Result := True;
end;
end;
end;
function TIndentAsmParam.IsIncludedInSettings: boolean;
begin
Result := FormattingSettings.SetAsm.ParamsIndentEnabled;
end;
end.
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