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51 lines
3.5 KiB
Text
Executable file
51 lines
3.5 KiB
Text
Executable file
<!DOCTYPE HTML>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html;charset=US-ASCII">
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<meta name="generator" content="ZealOS V0.05">
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<style type="text/css">
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body {background-color:#000000;}
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.cF0{color:#ffffff;background-color:#000000;}
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.cF1{color:#3465a4;background-color:#000000;}
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.cF2{color:#4e9a06;background-color:#000000;}
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.cFE{color:#fce94f;background-color:#000000;}
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</style>
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</head>
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<body>
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<pre style="font-family:monospace;font-size:12pt">
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<a name="l1"></a><span class=cF5> PreProcessor</span><span class=cF0>
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<a name="l2"></a>
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<a name="l3"></a>There is no separate preprocessor pass. The parser front-end calls </span><a href="https://tomawezome.github.io/ZealOS/Compiler/Lex.html#l529"><span class=cF4>Lex</span></a><span class=cF0>() which has the preprocessor built-in. The compiler
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<a name="l4"></a>looks ahead a token, most of the time, so you might throw an extra semicolon after a directive if it's not taking affect right
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<a name="l5"></a>away.
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<a name="l6"></a>
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<a name="l7"></a>Put an extra semicolon </span><span class=cF2>#exe {Cd("DirName");;}</span><span class=cF0> in case a </span><span class=cF2>#include</span><span class=cF0> follows.
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<a name="l8"></a>
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<a name="l9"></a></span><span class=cF2>#include ""</span><span class=cF0> There is no angle bracket <> form of this directive.
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<a name="l10"></a></span><span class=cF2>#exe {}</span><span class=cF0> Will execute code at compile-time and can be used to insert code into the stream being compiled using </span><span class=cF4>
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<a name="l11"></a></span><a href="https://tomawezome.github.io/ZealOS/Compiler/CMisc.html#l71"><span class=cF4>StreamPrint</span></a><span class=cF0>().
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<a name="l12"></a></span><span class=cF2>#define</span><span class=cF0> Define string const
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<a name="l13"></a></span><span class=cF2>#assert</span><span class=cF0> Print a warning during compilation if an expression is not true.
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<a name="l14"></a></span><span class=cF2>#if</span><span class=cF0> Include code if an expresion is true.
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<a name="l15"></a></span><span class=cF2>#else
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<a name="l16"></a>#endif
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<a name="l17"></a>#ifdef,#ifndef </span><span class=cF0>Include code if a sym is defined.
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<a name="l18"></a></span><span class=cF2>#ifaot,#ifjit </span><span class=cF0>Include code if in </span><span class=cF2>AOT</span><span class=cF0> compiler mode.
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<a name="l19"></a></span><span class=cF2>defined()</span><span class=cF0> Is a function that can be used in expressions.
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<a name="l20"></a></span><span class=cF2>#help_index</span><span class=cF0>, </span><span class=cF2>#help_file</span><span class=cF0> See </span><a href="https://tomawezome.github.io/ZealOS/Doc/HelpSystem.html#l1"><span class=cF4>Help System</span></a><span class=cF0>.
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<a name="l21"></a>
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<a name="l22"></a>See </span><a href="https://tomawezome.github.io/ZealOS/Compiler/Lex.html#l855"><span class=cF4>PreProcessor</span></a><span class=cF0>.
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</span></pre></body>
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</html>
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