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- <!DOCTYPE html><html><head><meta http-equiv="content-type" content="text/html;charset=utf-8"><title>ExpressionPrinter.java</title><link href="../../../../css/bootstrap.min.css" rel="stylesheet" type="text/css"/><link href="../../../../css/bootstrap-responsive.min.css" rel="stylesheet" type="text/css"/><link href="../../../../css/atlassian-docco.css" rel="stylesheet" type="text/css"/><link rel="stylesheet" class="codebrush light" title="IDEA" href="http://yandex.st/highlightjs/6.2/styles/idea.min.css"/><link rel="alternate stylesheet" class="codebrush light" title="Google Code" href="http://yandex.st/highlightjs/6.2/styles/googlecode.min.css"/><link rel="alternate stylesheet" class="codebrush light" title="GitHub" href="http://yandex.st/highlightjs/6.2/styles/github.min.css"/><link rel="alternate stylesheet" class="codebrush light" title="Visual Studio" href="http://yandex.st/highlightjs/6.2/styles/vs.min.css"/><link rel="alternate stylesheet" class="codebrush light" title="Magula" href="http://yandex.st/highlightjs/6.2/styles/magula.min.css"/><link rel="alternate stylesheet" class="codebrush dark" title="Zenburn" href="http://yandex.st/highlightjs/6.2/styles/zenburn.min.css"/><link rel="alternate stylesheet" class="codebrush dark" title="Arta" href="http://yandex.st/highlightjs/6.2/styles/arta.min.css"/><link rel="alternate stylesheet" class="codebrush dark" title="Monokai" href="http://yandex.st/highlightjs/6.2/styles/monokai.min.css"/><link rel="alternate stylesheet" class="codebrush dark" title="IR Black" href="http://yandex.st/highlightjs/6.2/styles/ir_black.min.css"/><link rel="alternate stylesheet" class="codebrush dark" title="Solarized Dark" href="http://yandex.st/highlightjs/6.2/styles/solarized_dark.min.css"/><script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script><script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.18/jquery-ui.min.js"></script><script type="text/javascript" src="http://yandex.st/highlightjs/6.2/highlight.min.js"></script><script type="text/javascript" src="../../../../js/jquery.cookie.js"></script><script type="text/javascript" src="../../../../js/bootstrap.min.js"></script><script type="text/javascript" src="../../../../js/atlassian-docco.js"></script></head><body><div class="navbar navbar-fixed-top"><div class="navbar-inner"><div class="container-fluid"><a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></a><a class="brand" href="#">ExpressionPrinter.java</a><div class="nav-collapse"><ul class="nav"><li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Index <b class="caret"></b></a><ul class="dropdown-menu"><li class="nav-header">Expression</li><li><a href="../../../../src/main/java/expression/Addition.java.html">Addition.java</a></li><li><a href="../../../../src/main/java/expression/Expression.java.html">Expression.java</a></li><li><a href="../../../../src/main/java/expression/Identifier.java.html">Identifier.java</a></li><li><a href="../../../../src/main/java/expression/Int.java.html">Int.java</a></li><li><a href="../../../../src/main/java/expression/Subtraction.java.html">Subtraction.java</a></li><li class="nav-header">Interpreter</li><li><a href="../../../../src/main/java/interpreter/Evaluator.java.html">Evaluator.java</a></li><li><a href="../../../../src/main/java/interpreter/Interpreter.java.html">Interpreter.java</a></li><li><a href="../../../../src/main/java/interpreter/InterpreterException.java.html">InterpreterException.java</a></li><li><a href="../../../../src/main/java/interpreter/Visitor.java.html">Visitor.java</a></li><li class="nav-header">Parser</li><li><a href="../../../../src/main/java/parser/Parser.java.html">Parser.java</a></li><li><a href="../../../../src/main/java/parser/SyntaxException.java.html">SyntaxException.java</a></li><li class="nav-header">Printer</li><li class="active"><a href="../../../../src/main/java/printer/ExpressionPrinter.java.html">ExpressionPrinter.java</a></li><li><a href="../../../../src/main/java/printer/ProgramPrinter.java.html">ProgramPrinter.java</a></li><li class="nav-header">Program</li><li><a href="../../../../src/main/java/program/Assignment.java.html">Assignment.java</a></li><li><a href="../../../../src/main/java/program/Composition.java.html">Composition.java</a></li><li><a href="../../../../src/main/java/program/Conditional.java.html">Conditional.java</a></li><li><a href="../../../../src/main/java/program/Loop.java.html">Loop.java</a></li><li><a href="../../../../src/main/java/program/Program.java.html">Program.java</a></li></ul></li><li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Theme <b class="caret"></b></a><ul id="themeDropdown" class="dropdown-menu"></ul></li><li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Layout <b class="caret"></b></a><ul class="dropdown-menu"><li class="active"><a href="#">Horizontal</a></li><li><a href="../../../../../vertical/src/main/java/printer/ExpressionPrinter.java.html">Vertical</a></li></ul></li></ul></div><!--/.nav-collapse --></div></div></div><div class="container-fluid docco-container"><div class="row-fluid"><div class="span12"><h1>ExpressionPrinter</h1><p>The <code>ExpressionPrinter</code> is used for string serialization of a given <code>Expression</code>.</p></div></div><div id="section-0" class="row-fluid docco-section"><div class="span6 doc"><span class="label label-info"><a style="color:white" href="#section-0">0</a></span><div class="doctext hidden-doc"></div></div><div class="span6 code"><div class="hidden-code-line">------------------<a href="javascript:void(0)" class="hidden-code-toggle" index="0">Show Header Code (<span class="linecount"></span> lines)</a>------------------</div><pre class="hidden-code"><code class="java">package printer;
-
- import expression.*;
- import interpreter.Visitor;</code></pre></div></div><div id="section-1" class="row-fluid docco-section"><div class="span6 doc"><span class="label label-info"><a style="color:white" href="#section-1">1</a></span><div class="doctext"><p>The <code>ExpressionPrinter</code> implements the string serialization with the help of the <a href="../../../../src/main/java/interpreter/Visitor.java.html">Visitor</a>.</p></div></div><div class="span6 code"><pre><code class="java">public class ExpressionPrinter extends Visitor<String> {
- public String visitAddition(Addition addition) {
- return visit(addition.leftHandSide) + " + " + visit(addition.rightHandSide);
- }
-
- public String visitIdentifier(Identifier identifier) {
- return identifier.name;
- }
-
- public String visitInt(Int integer) {
- return Integer.toString(integer.value);
- }
-
- public String visitSubtraction(Subtraction subtraction) {
- return visit(subtraction.leftHandSide) + " - " + visit(subtraction.rightHandSide);
- }</code></pre></div></div><div id="section-2" class="row-fluid docco-section"><div class="span6 doc"><span class="label label-info"><a style="color:white" href="#section-2">2</a></span><div class="doctext"><p>The <code>print</code> function takes an <code>Expression</code> instance as an argument and returns the string serialization of the given expression.</p></div></div><div class="span6 code"><pre><code class="java"> public String print(Expression expression) {
- return visit(expression);
- }
- }</code></pre></div></div></div><div id="grabber"></div></body></html>
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