在Delphi中调用Live Template时,如何创建GUID？

我假设您的示例模板中的两个不同的界面需要两个不同的IID，所以我写了脚本引擎来从“脚本”加载点名称(它只是名称=值对的列表，其中名称是点名称和值必须为NewGuid，否则忽略)，因此您可以创建具有多个点的模板，每个点都接收单独的新IID。

示例模板intf.xml：

<?xml version="1.0" encoding="utf-8" ?>
<codetemplate   xmlns="http://schemas.borland.com/Delphi/2005/codetemplates" version="1.0.0">
<template name="iacc" surround="false" invoke="manual">
    <point name="name">
        <text>
            Accessor
        </text>
        <hint>
            Accessors name
        </hint>
    </point>
    <point name="guid1"/>
    <point name="guid2"/>
    <description>
        accessor declaration
    </description>
    <author>
        PMH
    </author>
    <script language="NewGuidScript" onvalidate="true">
        guid1=NewGuid
        guid2=NewGuid
    </script>
    <code language="Delphi" context="any" delimiter="|">    <![CDATA[I|name|Accessors = interface(IInterface)
|*||guid1|
end;

I|name| = interface(I|name|Accessors)
|*||guid2|
end;]]>
    </code>
    </template>
</codetemplate>

NewGuidScriptEngine.pas：

unit NewGuidScriptEngine;

interface

uses
  Classes,SysUtils,ToolsApi,CodeTemplateApi,DesignEditors;

type
  TNewGuidScriptEngine = class(TNotifierObject,IOTACodeTemplateScriptEngine)
  public
    procedure Execute(const ATemplate: IOTACodeTemplate; const APoint: IOTACodeTemplatePoint; const ASyncPoints: IOTASyncEditPoints; const AScript: IOTACodeTemplateScript; var Cancel: Boolean);
    function GetIDString: WideString;
    function GetLanguage: WideString;
  end;

procedure Register;

implementation

uses
  ActiveX,ComObj;

procedure Register;
begin
  (BorlandIDEServices as IOTACodeTemplateServices).RegisterScriptEngine(TNewGuidScriptEngine.Create);
end;

procedure TNewGuidScriptEngine.Execute(const ATemplate: IOTACodeTemplate; const APoint: IOTACodeTemplatePoint;
  const ASyncPoints: IOTASyncEditPoints; const AScript: IOTACodeTemplateScript; var Cancel: Boolean);
var
  I: Integer;
  Guid: TGUID;
  P: IOTACodeTemplatePoint;
  Points: TStringList;
begin
  Cancel := False;
  if not Assigned(ATemplate) then
    Exit;

  Points := TStringList.Create;
  try
    Points.Text := AScript.Script;
    for I := 0 to Points.Count - 1 do
      Points.Strings[I] := Trim(Points[I]);

    for I := 0 to Points.Count - 1 do
      if Points.ValueFromIndex[I] = 'NewGuid' then
      begin
        P := ATemplate.FindPoint(Points.Names[I]);
        if Assigned(P) then
        begin
          OleCheck(CoCreateGuid(Guid));
          P.Editable := False;
          P.Value := '[''' + GUIDToString(Guid) + ''']';
        end;
      end;
  finally
    Points.Free;
  end;
end;

function TNewGuidScriptEngine.GetIDString: WideString;
begin
  Result := 'OndrejKelle.NewGuidScriptEngine';
end;

function TNewGuidScriptEngine.GetLanguage: WideString;
begin
  Result := 'NewGuidScript';
end;

end.

将上述单元放入设计时间包中，将对designide.dcp的引用添加到其require子句中，并将该包安装在IDE中。

另一个有用的，类似的模板可能如下所示：

<?xml version="1.0" encoding="utf-8" ?>
<codetemplate   xmlns="http://schemas.borland.com/Delphi/2005/codetemplates" version="1.0.0">
<template name="iacc" surround="false" invoke="manual">
    <point name="name">
        <text>
        </text>
        <hint>
            Accessors name
        </hint>
    </point>
    <point name="guid1"/>
    <point name="guid2"/>
    <description>
        accessor declaration
    </description>
    <author>
        PMH
    </author>
    <script language="NewGuidScript" onvalidate="true">
        guid1=NewGuid
        guid2=NewGuid
    </script>
    <code language="Delphi" context="any" delimiter="|">    <![CDATA[const
  SIID_I|name|Accessors = |guid1|;
  IID_I|name|Accessors: TGUID = SIID_I|name|Accessors;
  SIID_I|name| = |guid2|;
  IID_I|name|: TGUID = SIID_I|name|;

type
  I|name|Accessors = interface
    [SIID_I|name|Accessors]
  end;

  I|name| = interface(I|name|Accessors)
    [SIID_I|name|]
  end;]]>
    </code>
    </template>
</codetemplate>

这将声明字符串以及TGUID常量，并在接口声明中重用它们。在这种情况下，插入的GUID值不应该包含在方括号中。您有几个选项来调整脚本引擎来执行此操作：

>修改代码只是不使用方括号>引入一个单独的新功能NewGuidNoBrackets并在模板中使用它>引入一些简单的语法，如NewGuid(false)，您的引擎可以解析并使用参数值来确定是否应使用方括号。