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unit SpaceBeforeColon;
{ AFS 6 March 2003
spaces (or not) before colon
}
{(*}
(*------------------------------------------------------------------------------
Delphi Code formatter source code
The Original Code is SpaceBeforeColon, released May 2003.
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
uses SwitchableVisitor;
type
TSpaceBeforeColon = class(TSwitchableVisitor)
protected
function EnabledVisitSourceToken(const pcNode: TObject): boolean; override;
public
constructor Create; override;
function IsIncludedInSettings: boolean; override;
end;
implementation
uses
{ local }
JcfStringUtils,
JcfSettings, SetSpaces, SourceToken, Tokens, ParseTreeNodeType,
FormatFlags, TokenUtils;
function SpacesBefore(const pt: TSourceToken): integer;
var
lcSpaces: TSetSpaces;
begin
Assert(pt.TokenType = ttColon);
lcSpaces := FormattingSettings.Spaces;
if pt.HasParentNode(nFormalParams) and InRoundBrackets(pt) then
begin
{ in procedure params }
Result := lcSpaces.SpacesBeforeColonParam;
end
else if pt.HasParentNode(nFunctionHeading) and not
(pt.HasParentNode(nFormalParams)) then
begin
// function result type
Result := lcSpaces.SpacesBeforeColonFn;
end
else if pt.HasParentNode(nVarSection) then
begin
// variable decl
Result := lcSpaces.SpacesBeforeColonVar;
end
else if pt.HasParentNode(nConstSection) then
begin
// variable/const/type decl
Result := lcSpaces.SpacesBeforeColonConst;
end
else if pt.HasParentNode(nTypeSection) then
begin
// type decl uses =, but there are colons in the fields of record defs and object types
if pt.HasParentNode(ObjectTypes) then
begin
Result := lcSpaces.SpacesBeforeColonClassVar;
end
else if pt.HasParentNode(nRecordType) then
begin
Result := lcSpaces.SpacesBeforeColonRecordField;
end
else
if pt.HasParentNode(nGeneric) then
begin
Result := lcSpaces.SpacesBeforeColonInGeneric;
end
else
begin
Result := 0;
Assert(False, 'No context for colon ' + pt.DescribePosition);
end;
end
else if pt.HasParentNode(nLabelDeclSection) then
begin
Result := lcSpaces.SpacesBeforeColonLabel;
end
else if InStatements(pt) then
begin
if IsCaseColon(pt) then
Result := lcSpaces.SpacesBeforeColonCaseLabel
else if IsLabelColon(pt) then
Result := lcSpaces.SpacesBeforeColonLabel
else
Result := lcSpaces.SpacesBeforeColonLabel;
end
else if pt.HasParentNode(nAsm) then
begin
Result := 0; // !!!
end
else if pt.HasParentNode(nAttribute) then
begin
// Delphi.Net attribute
Result := 0;
end
else
begin
Result := 0;
// assertion failure brings the house down
Assert(False, 'No context for colon ' + pt.DescribePosition);
end;
end;
constructor TSpaceBeforeColon.Create;
begin
inherited;
FormatFlags := FormatFlags + [eAddSpace, eRemoveSpace];
end;
function TSpaceBeforeColon.EnabledVisitSourceToken(const pcNode: TObject): Boolean;
var
lcSourceToken, lcPrev: TSourceToken;
liSpaces: integer;
begin
Result := False;
if pcNode = nil then
exit;
lcSourceToken := TSourceToken(pcNode);
if lcSourceToken.TokenType <> ttColon then
exit;
lcPrev := lcSourceToken.PriorToken;
if lcPrev = nil then
exit;
liSpaces := SpacesBefore(lcSourceToken);
if liSpaces > 0 then
begin
{ modify the existing previous space, or make a new one? }
if (lcPrev.TokenType = ttWhiteSpace) then
begin
lcPrev.SourceCode := StrRepeat(NativeSpace, liSpaces);
end
else
begin
Result := True;
InsertTokenBefore(lcSourceToken, NewSpace(liSpaces));
end;
end
else
begin
{ remove the space }
if (lcPrev.TokenType = ttWhiteSpace) then
begin
lcPrev.SourceCode := '';
end
{ else we are already right }
end;
end;
function TSpaceBeforeColon.IsIncludedInSettings: boolean;
begin
Result := FormattingSettings.Spaces.FixSpacing;
end;
end.
|
