- WINDOWS SCRIPT DEBUGGER TUTORIAL HOW TO
- WINDOWS SCRIPT DEBUGGER TUTORIAL FULL
- WINDOWS SCRIPT DEBUGGER TUTORIAL CODE
WINDOWS SCRIPT DEBUGGER TUTORIAL CODE
scriptrun command will load a script, execute the root code of the script, the initializeScript and the invokeScript function. JavaScript script successfully loaded from 'C:\WinDbg\Scripts\TestScript.js'Īny object model manipulations made by the script will stay in place until the script is subsequently unloaded or is run again with different content.įor more information, see. scriptload C:\WinDbg\Scripts\TestScript.js The following command shows the successful load of TestScript.js. If there are any errors in the initial load and execution of the script, the errors will be displayed to console. scriptload command will load a script and execute the root code of a script and the initializeScript function. scriptload command.įor more information, see. Either type of script can be loaded with the. scriptprovidersĪny file ending in ".NatVis" is understood as a NatVis script and any file ending in ".js" is understood as a JavaScript script.
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In the example below, the JavaScript and NatVis providers are loaded. scriptproviders command will list all the script languages which are presently understood by the debugger and the extension under which they are registered. The following commands are available to work with JavaScript Debugger Scripting. scriptproviders command to confirm that the JavaScript provider is loaded. script commands, a scripting provider needs to be loaded. Loading the JavaScript Scripting Providerīefore using any of the. JavaScript Debugger Scripting is designed to work with all supported versions of Windows. JsProvider.dll is the JavaScript provider that is loaded to support JavaScript Debugger Scripting. For more information, see ECMAScript 6 - New Features: Overview & Comparison.
WINDOWS SCRIPT DEBUGGER TUTORIAL FULL
The JavaScript provider included with the debugger takes full advantage of the latest ECMAScript6 object and class enhancements. Native Objects in JavaScript Extensions JavaScript Scripting Videoĭefrag Tools #170 - Andy and Bill demonstrate JavaScript extensibility and scripting abilities in the debugger. These two topics provide additional information about working with JavaScript in the debugger. This topic describes some of what you can do with JavaScript debugger scripting.
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The script can provide new functions to the debugger's expression evaluator, modify the object model of the debugger, or can act as a visualizer in much the same way that a NatVis visualizer does. scriptload command, the root code of the script is executed, the names which are present in the script are bridged into the root namespace of the debugger (dx Debugger) and the script stays resident in memory until it is unloaded and all references to its objects are released. The JavaScript debugger scripting provider, allows the for use of JavaScript with the debugger. Script providers bridge a scripting language to the debugger's internal object model. Overview of JavaScript Debugger Scripting
WINDOWS SCRIPT DEBUGGER TUTORIAL HOW TO
Because the browser() statement requires no special tooling, it can be used in contexts where editor breakpoints won’t work.īrowser() is also useful for creating conditional breakpoints.This topic describes how to use JavaScript to create scripts that understand debugger objects and extend and customize the capabilities of the debugger. The environment browser invoked by browser() is the same one used in all of the other debugging facilities, so it can be considered the lowest-level debugging tool. Unlike an editor breakpoint, the browser() statement is actually part of your code, so it needs to be applied like any other code change in order to become active (by sourcing the containing document, rebuilding the containing package, reloading the Shiny application, etc.). Here, for instance, it’s used to halt when a function is about to return TRUE: You can put browser() anywhere in your code to stop at that point in the code for debugging. The R function browser() halts execution and invokes an environment browser when it is called. In most cases, you can source() the file to resolve the problem. The circle outline indicates that RStudio is aware of the breakpoint, but that it hasn’t been injected. If the function object doesn’t exist yet (for instance, because you haven’t called source() on the file), or the function object doesn’t match the contents of the editor (for instance, because you’ve changed the file since the last source()), the breakpoint will be deferred.
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R function objects that include this tracing code have a red dot in the environment pane, indicating that they contain breakpoints. Editor breakpoints take effect immediately and don’t require you to change your code (unlike browser() breakpoints, below).Įditor breakpoints work by injecting some tracing code into the R function object. You can do this in RStudio by clicking to the left of the line number in the editor, or by pressing Shift+F9 with your cursor on the desired line. The most common (and easiest) way to stop on a line of code is to set a breakpoint on that line.