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tool.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="generator" content="Asciidoctor 2.0.10">
<title>The Acceleo Editor</title>
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</style>
</head>
<body class="article">
<div id="header">
<div id="toc" class="toc">
<div id="toctitle">Table of Contents</div>
<ul class="sectlevel2">
<li><a href="#_the_acceleo_editor">The Acceleo Editor</a></li>
<li><a href="#_the_acceleo_debugger">The Acceleo Debugger</a></li>
<li><a href="#_acceleo_profiler">Acceleo Profiler</a></li>
</ul>
</div>
</div>
<div id="content">
<div class="sect2">
<h3 id="_the_acceleo_editor">The Acceleo Editor</h3>
<div class="admonitionblock important">
<table>
<tr>
<td class="icon">
<div class="title">Important</div>
</td>
<td class="content">
<div class="title">Before you Start</div>
<div class="paragraph">
<p>Use a <strong>Java Project</strong> and the classical <strong>Java Perspective</strong> for writing your Acceleo templates <code>.mtl</code> in the <strong>src</strong> folder.</p>
</div>
</td>
</tr>
</table>
</div>
<div class="paragraph">
<p>The module editor provides the following features:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Syntax highlighting;</p>
</li>
<li>
<p>Content assistant (<code>Ctrl + Space</code>);</p>
</li>
<li>
<p>Error detection;</p>
</li>
<li>
<p>Quick fixes;</p>
</li>
<li>
<p>Outlines;</p>
</li>
<li>
<p>Quick outline (<code>Ctrl + O</code>);</p>
</li>
<li>
<p>Open declaration (either with <code>Ctrl + Left Click</code> or <code>F3</code>);</p>
</li>
<li>
<p>Show references (<code>Ctrl + Shift + G</code>);</p>
</li>
<li>
<p>Rename (<code>Ctrl + Alt + R</code>);</p>
</li>
<li>
<p>White spaces.</p>
</li>
</ul>
</div>
<div class="sect3">
<h4 id="_syntax_highlighting">Syntax Highlighting</h4>
<div class="paragraph">
<p>The editor uses specific colors for Acceleo templates:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>red is used for template tags;</p>
</li>
<li>
<p>purple is used for other tags (queries, modules, imports, …​);</p>
</li>
<li>
<p>blue is used for dynamic expressions in templates or other places;</p>
</li>
<li>
<p>green is used for comments and String literals;</p>
</li>
<li>
<p>black is used for static text or query bodies.</p>
</li>
</ul>
</div>
<div class="imageblock">
<div class="content">
<img src="images/SyntaxHighlighting.png" alt="Syntax Highlighting">
</div>
</div>
</div>
<div class="sect3">
<h4 id="_content_assist">Content assist</h4>
<div class="paragraph">
<p>The content assistant is traditionally invoked with <code>Ctrl + Space</code>.
It proposes a choice of all elements that make sense at the place of invocation.
It is available everywhere, so don’t hesitate to hit <code>Ctrl + Space</code> anywhere!</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/ContentAssistMetamodel.png" alt="Content Assist">
</div>
</div>
</div>
<div class="sect3">
<h4 id="_real_time_errors_detection">Real Time Errors Detection</h4>
<div class="paragraph">
<p>Obviously, Acceleo displays error markers when errors are detected.
Acceleo displays error markers whenever a module file is not valid, whatever the reason.
Errors appear in the <strong>Problems</strong> view (generally displayed at the bottom of the perspective), and double-clicking on an error in this view directly takes you to the file where it is located.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/ErrorInProblemsView.png" alt="Errors in Problems view">
</div>
</div>
<div class="paragraph">
<p>Files with errors also appear with an error decorator.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/ErrorFile.png" alt="Error at file level">
</div>
</div>
<div class="paragraph">
<p>Just hover the marker in the editor margin with the mouse to get a tooltip to appear with an explanation of the problem.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/ErrorTooltip.png" alt="Error Tooltip">
</div>
</div>
</div>
<div class="sect3">
<h4 id="_quick_fixes">Quick fixes</h4>
<div class="paragraph">
<p>For some errors the Acceleo 4 editor can provide quick fixes to help you fix them. To access <strong>Quick Fixes</strong> you need to over the error with the mouse. If quick fixes are available you should see the following popup:</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/QuickFixes.png" alt="Quick Fixes">
</div>
</div>
<div class="paragraph">
<p>You can then select the quick fix you want to apply in the list.</p>
</div>
</div>
<div class="sect3">
<h4 id="_outlines">Outlines</h4>
<div class="paragraph">
<p>One of the great benefits of modern IDE tooling is the capacity to easily navigate in code from elements to their declarations and, vice-versa, from declarations to usages.</p>
</div>
<div class="sect4">
<h5 id="_the_dynamic_outline">The dynamic outline</h5>
<div class="paragraph">
<p>The traditional Eclipse <strong>Outline</strong> view is used by Acceleo to display the module’s structure metamodels, templates, queries can be seen there, and double-clicking on any of them places the cursor at the corresponding position in the module (in the editor).</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/Outline.png" alt="Outline">
</div>
</div>
</div>
<div class="sect4">
<h5 id="_the_quick_outline">The quick outline</h5>
<div class="paragraph">
<p>The quick outline, which can be displayed using <code>Ctrl + O</code>, displays just the necessary information to access any element in the current module.
So, hitting <code>Ctrl + O</code> displays a pop-up with a list of templates and queries.</p>
</div>
<div class="paragraph">
<p>A text field at the top allows you to quickly filter the content in order to easily find what you are looking for.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/QuickOutline.png" alt="QuickOutline">
</div>
</div>
</div>
</div>
<div class="sect3">
<h4 id="_open_declaration">Open Declaration</h4>
<div class="paragraph">
<p>The traditional shortcut <code>F3</code> is supported by Acceleo, along with <code>Ctrl + click</code>, which both take you to the declaration of the selected or clicked element.
This is supported for all kinds of elements: templates, queries, metamodels, metamodel elements, EOperations, etc.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/OpenDeclaration.png" alt="Open Declaration">
</div>
</div>
</div>
<div class="sect3">
<h4 id="_show_references">Show references</h4>
<div class="paragraph">
<p>You can show references to a service or a variable by either selecting its declaration or one of its reference an using the <code>Ctrl + Shift + G</code> shortcut. It will show all references in the search view.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/ShowReferences.png" alt="Show References">
</div>
</div>
<div class="paragraph">
<p>You can then double click enties in the search view to navigate to a reference.</p>
</div>
</div>
<div class="sect3">
<h4 id="_rename">Rename</h4>
<div class="paragraph">
<p>You can use the rename shortcut <code>Ctrl + Alt + R</code> to rename all references to a service or a variable in the workspace.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/RefactorRename.png" alt="Refactor Rename">
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_the_acceleo_debugger">The Acceleo Debugger</h3>
<div class="sect3">
<h4 id="_breakpoints">Breakpoints</h4>
<div class="paragraph">
<p>To add a breakpoint somewhere in a template, just double-click in the left margin on the line where you want to add the breakpoint.
A nice bluish marker should appear, which should be very familiar to eclipse users.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/Breakpoint.png" alt="Breakpoint">
</div>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">
Conditional breakpoints are not supported.
</td>
</tr>
</table>
</div>
</div>
<div class="sect3">
<h4 id="_step_by_step_execution">Step by step execution</h4>
<div class="paragraph">
<p>To debug an Acceleo generation:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Right-click on your <code>.mtl</code> file, and select <strong>Debug As > Debug Acceleo 4 generation</strong>.</p>
</li>
</ul>
</div>
<div class="imageblock">
<div class="content">
<img src="images/DebugAs.png" alt="Debug As">
</div>
</div>
<div class="paragraph">
<p>It is actually recommended to switch to the <strong>Debug Perspective</strong>, which is really more appropriate to debug executions.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/DebugSession.png" alt="Debug">
</div>
</div>
<div class="paragraph">
<p>The debug perspective should be quite familiar to people used to the eclipse IDE.
The <strong>Debug</strong> view (on the top left) displays the stack of the current execution.
Clicking on any element of the stack will simultaneously display the corresponding Acceleo code in the edition area.</p>
</div>
<div class="paragraph">
<p>The <strong>Variables</strong> view displays currently accessible variables.
In the example below, the execution has met a breakpoint when computing <code>Attributes</code> for a class, so the current input is a class.
The Variables view tells us that the current class is called <code>EAttribute</code>.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/VariablesView.png" alt="VariablesView">
</div>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">
The debugger cannot step into AQL expressions only Acceleo elements are visible in the Variables view.
</td>
</tr>
</table>
</div>
<div class="paragraph">
<p>As usual, it is possible to:</p>
</div>
<div class="ulist">
<ul>
<li>
<p><strong>Step into</strong> a template (<code>F5</code>);</p>
</li>
<li>
<p><strong>Step over</strong> a template (<code>F6</code>);</p>
</li>
<li>
<p><strong>Step Return</strong> (<code>F7</code>), which means "go to the end of the current template";</p>
</li>
<li>
<p><strong>Resume</strong> execution (<code>F8</code>);</p>
</li>
<li>
<p><strong>Stop</strong> execution (<code>Ctrl + F2</code>).
The icons above the <strong>Debug</strong> view serve the same purpose.</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>Acceleo breakpoints can be temporarily deactivated, thanks to the <strong>Breakpoints</strong> view.
Just uncheck the checkbox in front of a breakpoint to deactivate it.
Here is an example of a deactivated breakpoint in this view:</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/UnactivBreakpoint.png" alt="Unchecked Breakpoint">
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="_acceleo_profiler">Acceleo Profiler</h3>
<div class="paragraph">
<p>The Acceleo 4 Profiler allows you to keep track of executions and see where time is consumed during a generation, thus making it easier to identify (and hopefully fix) bottlenecks.</p>
</div>
<div class="sect3">
<h4 id="_launching_a_generation_with_the_profiler">Launching a generation with the profiler</h4>
<div class="paragraph">
<p>The first thing to do to profile an Acceleo generation is to create a Profile Configuration, which is as we will see very similar to a Launch Configuration. To create a Profile Configuration, right-click on an Acceleo module file, and select Profile As > Profile Configurations…​.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/ProfileAs.png" alt="Profile As">
</div>
</div>
<div class="paragraph">
<p>A configuration page appears, which looks very much like the traditional launch configuration page.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/ProfileLaunchConfiguration.png" alt="Profiler Launch Configuration">
</div>
</div>
<div class="paragraph">
<p>There is just one additional information to enter, which is the path to the profiling result file where Acceleo will store the profiling information of subsequent executions. Profile files must have the file extension .mtlp. If you try another file extension, the configuration page displays an error message and the configuration cannot be saved.
You can simply select a folder in this dialog, in which the profile file will be created.</p>
</div>
</div>
<div class="sect3">
<h4 id="_acceleo_profile_files">Acceleo Profile Files</h4>
<div class="paragraph">
<p>Acceleo stores the result of a profiled execution in a file which extension is .mtlp. This file is actually just a serialized EMF model. Let’s take a closer look at it.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/ProfileFile.png" alt="Profile File">
</div>
</div>
<div class="paragraph">
<p>The above image shows the content of an mtlp file, and correspondances between the profiled data and the Acceleo template elements.</p>
</div>
<div class="paragraph">
<p>For each generated file, there is one entry in the root node of the profile.</p>
</div>
<div class="paragraph">
<p>Inside of each generated file block, there is profiling information for each template instruction. The containment of profiled data follows the structure of executed templates. For example, a [for …​ ] instruction contains other template calls, so the profiled data has a node for the for which contains a node for each template call executed inside this for.</p>
</div>
</div>
<div class="sect3">
<h4 id="_coverage_informations">Coverage informations</h4>
<div class="paragraph">
<p>The profile editor also provides coverage informations based on the profiling result. For each used module it shows what percentage of it has been actually used.</p>
</div>
<div class="paragraph">
<p>You can double-click on the module in the profile editor (or on any module element in the profile model) to accurately see what has been used in a given module. It shows in green what has been covered by the execution and in red what has been ignored.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="images/Coverage.png" alt="Coverage">
</div>
</div>
<div class="paragraph">
<p>To get rid of the coverage highlighting you can simply close the editor and reopen the file from the explorer.</p>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2024-01-29 18:12:54 +0100
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