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unit AlignField;
{(*}
(*------------------------------------------------------------------------------
Delphi Code formatter source code
The Original Code is AlignField, released June 2004.
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
{ the purpose of this process is to align the type names
of fields in class and record declarations
e.g.
type
TFoo = class
private
fiField1: integer;
fsSomeSTring: string;
ff: float;
end;
This is similar to aligning a "var" section,
so this class overrides TAlignVars
and just changes the rules for where it kicks in
}
uses SourceToken, AlignVars;
type
TAlignField = class(TAlignVars)
private
protected
{ TokenProcessor overrides }
function AlignedToken(const pt: TSourceToken): boolean; override;
function IsTokenInContext(const pt: TSourceToken): boolean; override;
function TokenIsAligned(const pt: TSourceToken): boolean; override;
function TokenEndsStatement(const pt: TSourceToken): boolean; override;
function TokenEndsAlignment(const pt: TSourceToken): boolean; override;
public
constructor Create; override;
function IsIncludedInSettings: boolean; override;
end;
implementation
uses
FormatFlags,
JcfSettings, ParseTreeNodeType, Tokens, TokenUtils;
{ Adding 'nClassDeclarations' causes the top part of a form
(ie without a visiblity specifier) to be aligned.
This is probably the desired behaviour.
}
const
FORMATTED_SECTIONS: TParseTreeNodeTypeSet =
[nClassVisibility, nClassDeclarations, nFieldDeclaration];
constructor TAlignField.Create;
begin
inherited;
FormatFlags := FormatFlags + [eAlignField];
end;
function TAlignField.AlignedToken(const pt: TSourceToken): boolean;
const
NOT_ALIGNED: TTokenTypeSet = [ttWhiteSpace, ttReturn, ttComment, ttSemiColon, ttColon, ttRecord];
begin
Result := not (pt.TokenType in NOT_ALIGNED);
if Result then
Result := pt.HasParentNode(FORMATTED_SECTIONS);
if Result then
Result := pt.IsOnRightOf([nVarDecl, nFieldDeclaration], [ttColon]);
end;
function TAlignField.IsIncludedInSettings: boolean;
begin
Result := (not FormattingSettings.Obfuscate.Enabled) and FormattingSettings.Align.AlignField;
end;
function TAlignField.IsTokenInContext(const pt: TSourceToken): boolean;
begin
Result := pt.HasParentNode(FORMATTED_SECTIONS) and
((not FormattingSettings.Align.InterfaceOnly) or (pt.HasParentNode(nInterfaceSection)));
end;
function TAlignField.TokenEndsStatement(const pt: TSourceToken): boolean;
begin
if pt = nil then
Result := True
{ only look at solid tokens }
else if (pt.TokenType in [ttReturn, ttWhiteSpace]) then
begin
// ended by a blank line
Result := IsBlankLineEnd(pt);
end
else
begin
Result := (pt.TokenType = ttSemiColon) or (not pt.HasParentNode(FORMATTED_SECTIONS));
end;
end;
function TAlignField.TokenIsAligned(const pt: TSourceToken): boolean;
begin
{ the local var feFoundTokenState is used to recognise the first token
in the type after the colon }
Result := (feFoundTokenState in [eOn, eUnknown]) and AlignedToken(pt);
if Result and (RoundBracketLevel(pt) > 0) then
Result := False;
end;
function TAlignField.TokenEndsAlignment(const pt: TSourceToken): boolean;
begin
// ended by a blank line
Result := IsBlankLineEnd(pt);
{ ended by change in class visiblity section }
if not Result then
Result := pt.TokenType in ClassVisibility;
{ ended by a change in record nesting level }
if not Result then
Result := (pt.TokenType = ttCase) and (pt.HasParentNode([nRecordVariantSection], 1));
if not Result then
Result := (pt.TokenType = ttRecord) and (pt.HasParentNode([nRecordType], 1));
end;
end.
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