- Kaleidoscope
Zola
2026-07-03T00:00:00+00:00
https://tangyingpeng.cn/tags/kaleidoscope/atom.xml
Kaleidoscope-day1
2026-07-03T00:00:00+00:00
2026-07-03T00:00:00+00:00
Unknown
https://tangyingpeng.cn/posts/kaleidoscope-day1/
<p>阅读了Kaleidoscope llvm教程的第一二章，大概初步了解了语言的部分词法和语法定义。</p>
<p>总结一下, 不完整的定义：</p>
<pre class="giallo" style="color: #CDD6F4; background-color: #1E1E2E;"><code data-lang="plain"><span class="giallo-l"><span>S: definition | external | expr | ';'</span></span>
<span class="giallo-l"><span>definition: 'def' prototype expr</span></span>
<span class="giallo-l"><span>external: 'extern' prototype </span></span>
<span class="giallo-l"><span>prototype: IDENTIFIER '(' IDENTIFIER? (',' IDENTIFIER)* ')'</span></span>
<span class="giallo-l"><span>expr: primary | binaryExpr</span></span>
<span class="giallo-l"><span>primary: NUMBER | '(' expr ')' | IDENTIFIER ('(' expr? (',' expr)* ')')?</span></span>
<span class="giallo-l"><span>binaryExpr: primary ops expr</span></span>
<span class="giallo-l"><span>IDENTIFIER: LETTER (LETTER | DIGIT)*</span></span>
<span class="giallo-l"><span>NUMBER: DIGIT+ ( '.' DIGIT+)?</span></span>
<span class="giallo-l"><span>LETTER: [a-zA-Z_]</span></span>
<span class="giallo-l"><span>DIGIT: [0-9]</span></span></code></pre>