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<div id="projectname">sapphirec
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 <span id="projectnumber">0.1</span>
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<div id="projectbrief">The Sapphire compiler.</div>
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<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li> </ul>
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<div class="title">Lexer.h</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#pragma once</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#include "Token.h"</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include "sapphirepch.h"</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include <array></span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>  </div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">/* Let's redefine TokenStream, as if it wasn't already defined in Token.h*/</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="keyword">typedef</span> std::vector<Token> TokenStream;</div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">/* The number of data types currently in Sapphire. */</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define TYPE_COUNT 14</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">/* The Lexer for the Sapphire compiler. A Lexer reads source code from a file, and turns it into a stream of tokens the</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * compiler can understand. */</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"><a class="line" href="classLexer.html"> 13</a></span> <span class="keyword">class </span><a class="code" href="classLexer.html">Lexer</a></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> {</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  <a class="code" href="structLocation.html">Location</a> loc;</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  <a class="code" href="structLocation.html">Location</a> prev_loc;</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keywordtype">int</span> advance();</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keywordtype">int</span> rewind();</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keywordtype">char</span> current_char;</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordtype">int</span> index;</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <a class="code" href="classLexer.html">Lexer</a>(<span class="keyword">const</span> std::string& fname);</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  std::string current_line_text;</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  std::string previous_line_text;</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  std::string current_lexed_text;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  std::string recalculate_current_line(<span class="keyword">const</span> std::string& text);</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="structToken.html">Token</a> create_string();</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <a class="code" href="structToken.html">Token</a> create_number();</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <a class="code" href="structToken.html">Token</a> create_identifier();</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordtype">bool</span> is_in_string(<span class="keyword">const</span> std::string& <span class="keywordtype">string</span>, <span class="keyword">const</span> <span class="keywordtype">char</span>& character);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  </div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">/* An array containing Sapphire's current data types. */</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keyword">static</span> <span class="keyword">const</span> std::array<std::string, TYPE_COUNT> types;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  ~<a class="code" href="classLexer.html">Lexer</a>();</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">/* Lex the given text, turning it into a stream of tokens. */</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  TokenStream lex(<span class="keyword">const</span> std::string& text);</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">/* Create a new Lexer and return a pointer to it. */</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">static</span> std::unique_ptr<Lexer> make_lexer(<span class="keyword">const</span> std::string& fname);</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="comment">/* If the Lexer is lexing an impòrted file, give it the location in the parent file at which it was imported. */</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> assign_parent_location(std::unique_ptr<Lexer>& lexer, <span class="keyword">const</span> std::shared_ptr<Location>& loc);</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> };</div>
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<div class="ttc" id="aclassLexer_html"><div class="ttname"><a href="classLexer.html">Lexer</a></div><div class="ttdef"><b>Definition:</b> Lexer.h:14</div></div>
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<div class="ttc" id="astructLocation_html"><div class="ttname"><a href="structLocation.html">Location</a></div><div class="ttdef"><b>Definition:</b> Location.h:6</div></div>
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<div class="ttc" id="astructToken_html"><div class="ttname"><a href="structToken.html">Token</a></div><div class="ttdef"><b>Definition:</b> Token.h:54</div></div>
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