Scripting “O2 Tool – AST Search” to find Null references (.NET Static Analysis)

This script will show how to use the control that builds up the O2 Tool – Search AST to perform a custom search for all variables that are assigned the value of ‘null’

Here is the execution result

 

And here is the source code:

var topPanel = O2Gui.open<Panel>("Custom filtering of 'Search AST' tool",700,400);
//var topPanel = panel.clear().add_Panel();  
var ascxSearchAst = topPanel.add_Control<ascx_SearchAST>();  
    
var sourceCodeFolder = @"C:\O2\Demos\HacmeBank\HacmeBank_v2.0 (7 Dec 08)\HacmeBank_v2_WS";
  
//Load ASTs from files (use cache data if available)
var astData = (O2MappedAstData)O2LiveObjects.get(sourceCodeFolder);
if (astData.isNull())
{
    "loading AstData from: {0}".info(sourceCodeFolder);
    astData = new O2MappedAstData();
    astData.loadFiles(sourceCodeFolder.files(true,"*.cs","*.vb")); 
    O2LiveObjects.set(sourceCodeFolder,astData);
}  
ascxSearchAst.buildGui(astData);  
  
 
//Example #1  
/*  
ascxSearchAst.setINodeFilter("Attribute");    
ascxSearchAst.setSearchOnSelectedINode("WebMethod");  
*/
//Example #2
 
    ascxSearchAst.setINodeFilter("Primitive");    
    ascxSearchAst.setSearchOnSelectedINode("Null");   
//Example #3
/*
    ascxSearchAst.setSearchOnAlINodes("password"); 
*/

return "ok";
//O2File:ascx_SearchAST.cs
//using O2.XRules.Database.Languages_and_Frameworks.DotNet
//O2Ref:O2_API_AST.dll
//using O2.API.AST.CSharp;