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| <a name="1" href="#1">1</a> <em class="jxr_comment">/*<em class="jxr_comment"> Generated By:JJTree: Do not edit this line. JJTParserState.java */</em></em> |
| <a name="2" href="#2">2</a> |
| <a name="3" href="#3">3</a> <strong class="jxr_keyword">package</strong> org.apache.velocity.runtime.parser; |
| <a name="4" href="#4">4</a> |
| <a name="5" href="#5">5</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.runtime.parser.node.Node; |
| <a name="6" href="#6">6</a> |
| <a name="7" href="#7">7</a> |
| <a name="8" href="#8">8</a> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/velocity/runtime/parser/JJTParserState.html">JJTParserState</a> { |
| <a name="9" href="#9">9</a> <strong class="jxr_keyword">private</strong> java.util.Stack nodes; |
| <a name="10" href="#10">10</a> <strong class="jxr_keyword">private</strong> java.util.Stack marks; |
| <a name="11" href="#11">11</a> |
| <a name="12" href="#12">12</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> sp; <em class="jxr_comment">// number of nodes on stack</em> |
| <a name="13" href="#13">13</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong> mk; <em class="jxr_comment">// current mark</em> |
| <a name="14" href="#14">14</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">boolean</strong> node_created; |
| <a name="15" href="#15">15</a> |
| <a name="16" href="#16">16</a> <a href="../../../../../org/apache/velocity/runtime/parser/JJTParserState.html">JJTParserState</a>() { |
| <a name="17" href="#17">17</a> nodes = <strong class="jxr_keyword">new</strong> java.util.Stack(); |
| <a name="18" href="#18">18</a> marks = <strong class="jxr_keyword">new</strong> java.util.Stack(); |
| <a name="19" href="#19">19</a> sp = 0; |
| <a name="20" href="#20">20</a> mk = 0; |
| <a name="21" href="#21">21</a> } |
| <a name="22" href="#22">22</a> |
| <a name="23" href="#23">23</a> <em class="jxr_comment">/*<em class="jxr_comment"> Determines whether the current node was actually closed and</em></em> |
| <a name="24" href="#24">24</a> <em class="jxr_comment"> pushed. This should only be called in the final user action of a</em> |
| <a name="25" href="#25">25</a> <em class="jxr_comment"> node scope. */</em> |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">boolean</strong> nodeCreated() { |
| <a name="27" href="#27">27</a> <strong class="jxr_keyword">return</strong> node_created; |
| <a name="28" href="#28">28</a> } |
| <a name="29" href="#29">29</a> |
| <a name="30" href="#30">30</a> <em class="jxr_comment">/*<em class="jxr_comment"> Call this to reinitialize the node stack. It is called</em></em> |
| <a name="31" href="#31">31</a> <em class="jxr_comment"> automatically by the parser's ReInit() method. */</em> |
| <a name="32" href="#32">32</a> <strong class="jxr_keyword">void</strong> reset() { |
| <a name="33" href="#33">33</a> nodes.removeAllElements(); |
| <a name="34" href="#34">34</a> marks.removeAllElements(); |
| <a name="35" href="#35">35</a> sp = 0; |
| <a name="36" href="#36">36</a> mk = 0; |
| <a name="37" href="#37">37</a> } |
| <a name="38" href="#38">38</a> |
| <a name="39" href="#39">39</a> <em class="jxr_comment">/*<em class="jxr_comment"> Returns the root node of the AST. It only makes sense to call</em></em> |
| <a name="40" href="#40">40</a> <em class="jxr_comment"> this after a successful parse. */</em> |
| <a name="41" href="#41">41</a> <a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> rootNode() { |
| <a name="42" href="#42">42</a> <strong class="jxr_keyword">return</strong> (Node)nodes.elementAt(0); |
| <a name="43" href="#43">43</a> } |
| <a name="44" href="#44">44</a> |
| <a name="45" href="#45">45</a> <em class="jxr_comment">/*<em class="jxr_comment"> Pushes a node on to the stack. */</em></em> |
| <a name="46" href="#46">46</a> <strong class="jxr_keyword">void</strong> pushNode(<a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> n) { |
| <a name="47" href="#47">47</a> nodes.push(n); |
| <a name="48" href="#48">48</a> ++sp; |
| <a name="49" href="#49">49</a> } |
| <a name="50" href="#50">50</a> |
| <a name="51" href="#51">51</a> <em class="jxr_comment">/*<em class="jxr_comment"> Returns the node on the top of the stack, and remove it from the</em></em> |
| <a name="52" href="#52">52</a> <em class="jxr_comment"> stack. */</em> |
| <a name="53" href="#53">53</a> <a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> popNode() { |
| <a name="54" href="#54">54</a> <strong class="jxr_keyword">if</strong> (--sp < mk) { |
| <a name="55" href="#55">55</a> mk = ((Integer)marks.pop()).intValue(); |
| <a name="56" href="#56">56</a> } |
| <a name="57" href="#57">57</a> <strong class="jxr_keyword">return</strong> (Node)nodes.pop(); |
| <a name="58" href="#58">58</a> } |
| <a name="59" href="#59">59</a> |
| <a name="60" href="#60">60</a> <em class="jxr_comment">/*<em class="jxr_comment"> Returns the node currently on the top of the stack. */</em></em> |
| <a name="61" href="#61">61</a> <a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> peekNode() { |
| <a name="62" href="#62">62</a> <strong class="jxr_keyword">return</strong> (Node)nodes.peek(); |
| <a name="63" href="#63">63</a> } |
| <a name="64" href="#64">64</a> |
| <a name="65" href="#65">65</a> <em class="jxr_comment">/*<em class="jxr_comment"> Returns the number of children on the stack in the current node</em></em> |
| <a name="66" href="#66">66</a> <em class="jxr_comment"> scope. */</em> |
| <a name="67" href="#67">67</a> <strong class="jxr_keyword">int</strong> nodeArity() { |
| <a name="68" href="#68">68</a> <strong class="jxr_keyword">return</strong> sp - mk; |
| <a name="69" href="#69">69</a> } |
| <a name="70" href="#70">70</a> |
| <a name="71" href="#71">71</a> |
| <a name="72" href="#72">72</a> <strong class="jxr_keyword">void</strong> clearNodeScope(<a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> n) { |
| <a name="73" href="#73">73</a> <strong class="jxr_keyword">while</strong> (sp > mk) { |
| <a name="74" href="#74">74</a> popNode(); |
| <a name="75" href="#75">75</a> } |
| <a name="76" href="#76">76</a> mk = ((Integer)marks.pop()).intValue(); |
| <a name="77" href="#77">77</a> } |
| <a name="78" href="#78">78</a> |
| <a name="79" href="#79">79</a> |
| <a name="80" href="#80">80</a> <strong class="jxr_keyword">void</strong> openNodeScope(<a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> n) { |
| <a name="81" href="#81">81</a> marks.push(<strong class="jxr_keyword">new</strong> Integer(mk)); |
| <a name="82" href="#82">82</a> mk = sp; |
| <a name="83" href="#83">83</a> n.jjtOpen(); |
| <a name="84" href="#84">84</a> } |
| <a name="85" href="#85">85</a> |
| <a name="86" href="#86">86</a> |
| <a name="87" href="#87">87</a> <em class="jxr_comment">/*<em class="jxr_comment"> A definite node is constructed from a specified number of</em></em> |
| <a name="88" href="#88">88</a> <em class="jxr_comment"> children. That number of nodes are popped from the stack and</em> |
| <a name="89" href="#89">89</a> <em class="jxr_comment"> made the children of the definite node. Then the definite node</em> |
| <a name="90" href="#90">90</a> <em class="jxr_comment"> is pushed on to the stack. */</em> |
| <a name="91" href="#91">91</a> <strong class="jxr_keyword">void</strong> closeNodeScope(<a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> n, <strong class="jxr_keyword">int</strong> num) { |
| <a name="92" href="#92">92</a> mk = ((Integer)marks.pop()).intValue(); |
| <a name="93" href="#93">93</a> <strong class="jxr_keyword">while</strong> (num-- > 0) { |
| <a name="94" href="#94">94</a> <a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> c = popNode(); |
| <a name="95" href="#95">95</a> c.jjtSetParent(n); |
| <a name="96" href="#96">96</a> n.jjtAddChild(c, num); |
| <a name="97" href="#97">97</a> } |
| <a name="98" href="#98">98</a> n.jjtClose(); |
| <a name="99" href="#99">99</a> pushNode(n); |
| <a name="100" href="#100">100</a> node_created = <strong class="jxr_keyword">true</strong>; |
| <a name="101" href="#101">101</a> } |
| <a name="102" href="#102">102</a> |
| <a name="103" href="#103">103</a> |
| <a name="104" href="#104">104</a> <em class="jxr_comment">/*<em class="jxr_comment"> A conditional node is constructed if its condition is true. All</em></em> |
| <a name="105" href="#105">105</a> <em class="jxr_comment"> the nodes that have been pushed since the node was opened are</em> |
| <a name="106" href="#106">106</a> <em class="jxr_comment"> made children of the the conditional node, which is then pushed</em> |
| <a name="107" href="#107">107</a> <em class="jxr_comment"> on to the stack. If the condition is false the node is not</em> |
| <a name="108" href="#108">108</a> <em class="jxr_comment"> constructed and they are left on the stack. */</em> |
| <a name="109" href="#109">109</a> <strong class="jxr_keyword">void</strong> closeNodeScope(<a href="../../../../../org/apache/velocity/runtime/parser/node/Node.html">Node</a> n, <strong class="jxr_keyword">boolean</strong> condition) { |
| <a name="110" href="#110">110</a> <strong class="jxr_keyword">if</strong> (condition) { |
| <a name="111" href="#111">111</a> <strong class="jxr_keyword">int</strong> a = nodeArity(); |
| <a name="112" href="#112">112</a> mk = ((Integer)marks.pop()).intValue(); |
| <a name="113" href="#113">113</a> <strong class="jxr_keyword">while</strong> (a-- > 0) { |
| <a name="114" href="#114">114</a> Node c = popNode(); |
| <a name="115" href="#115">115</a> c.jjtSetParent(n); |
| <a name="116" href="#116">116</a> n.jjtAddChild(c, a); |
| <a name="117" href="#117">117</a> } |
| <a name="118" href="#118">118</a> n.jjtClose(); |
| <a name="119" href="#119">119</a> pushNode(n); |
| <a name="120" href="#120">120</a> node_created = <strong class="jxr_keyword">true</strong>; |
| <a name="121" href="#121">121</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="122" href="#122">122</a> mk = ((Integer)marks.pop()).intValue(); |
| <a name="123" href="#123">123</a> node_created = false; |
| <a name="124" href="#124">124</a> } |
| <a name="125" href="#125">125</a> } |
| <a name="126" href="#126">126</a> } |
| </pre> |
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