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It's all about the Goto (PHP UK version)

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Derick Rethans
2017-02-15 13:17:59 +00:00
parent a80264469c
commit 772faeb616
2 changed files with 118 additions and 2 deletions
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jump-phpuk17.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<presentation css="10gen-strict.css">
<topic>PHP</topic>
<title>It's All About the Goto</title>
<event>PHP UK Conference 2017</event>
<location>London, UK</location>
<date>February 16th, 2017</date>
<speaker>Derick Rethans</speaker>
<email>derick@php.net</email>
<twitter>derickr</twitter>
<joindin></joindin>
<slide>slides/mongodb/title.xml</slide>
<slide>slides/mongodb/me.xml</slide>
<slide>slides/internals/title-agenda.xml</slide>
<slide>slides/internals/title-stages.xml</slide>
<!-- INTRODUCTION
Compile stages:
Parse script
Create AST
Convert to opcodes
Run the code
Opcache for caching
-->
<slide>slides/internals/stages.xml</slide>
<!-- STAGES
Parse
- Show parser rules
- Show "compiler" rules
-->
<slide>slides/internals/title-parsing.xml</slide>
<slide>slides/internals/parse-state-machine.xml</slide>
<slide>slides/internals/parse-tokenization.xml</slide>
<slide>slides/internals/scanner.xml</slide>
<slide>slides/internals/scanner-rules.xml</slide>
<slide>slides/internals/ast.xml</slide>
<slide>slides/internals/ast1.xml</slide>
<slide>slides/internals/scanner-ast.xml</slide>
<slide>slides/internals/scanner-ast2.xml</slide>
<slide>slides/internals/bytecode0.xml</slide>
<slide>slides/internals/bytecode½.xml</slide>
<slide>slides/internals/bytecode1.xml</slide>
<slide>slides/internals/jumps.xml</slide>
<!--
AST
- Show AST for various control structures
Opcodes
- Show AST for the same control structures
-->
<slide>slides/internals/jumps-if.xml</slide>
<slide>slides/internals/jumps-if-else.xml</slide>
<slide>slides/internals/rings.xml</slide>
<slide>slides/internals/jumps-for.xml</slide>
<slide>slides/internals/jumps-for-rewritten.xml</slide>
<slide>slides/internals/jumps-while.xml</slide>
<slide>slides/internals/jumps-do-while.xml</slide>
<slide>slides/internals/jumps-foreach.xml</slide>
<slide>slides/internals/jumps-complex.xml</slide>
<slide>slides/internals/loops.xml</slide>
<slide>slides/internals/jumps-complex-dot.xml</slide>
<!--
Try/Catch nonsense
- FASTCALL/FASTRET
-->
<slide>slides/internals/catch.xml</slide>
<slide>slides/internals/jumps-try-catch.xml</slide>
<!--
Dead code analysis
- Show how Xdebug does it through VLD
-->
<slide>slides/internals/deadcode.xml</slide>
<slide>slides/internals/deadcode-vld.xml</slide>
<!--
Path analysis
- Branch and Path
-->
<slide>slides/internals/branches.xml</slide>
<slide>slides/xdebug/vld-path-2-paths.xml</slide>
<slide>slides/xdebug/vld-path-4-code.xml</slide>
<slide>slides/xdebug/vld-path-4-output.xml</slide>
<slide>slides/xdebug/vld-path-3-code.xml</slide>
<slide>slides/xdebug/vld-path-3-output.xml</slide>
<slide>slides/xdebug/vld-path-3-paths.xml</slide>
<!-- Conclusion
Code -> Tokens -> AST -> opode
Transformation of control structures
Useful implementations
-->
<slide>slides/internals/recap.xml</slide>
<slide>slides/internals/recap-content.xml</slide>
<slide>slides/mongodb/questions.xml</slide>
<slide>slides/mongodb/resources.xml</slide>
</presentation>

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slides/internals/parse-tokenization.xml
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@@ -35,8 +35,8 @@ class Whisky
$this->name = $name;␃]]></example>
<blurb>In tokens:</blurb>
<example inline="1"><![CDATA[*T_OPEN_TAG* &lt;?php
*T_NAMESPACE* |777777|T_WS| *T_NS_SEPARATOR* *T_STRING* DramIO ; |777777|T_WS|
*T_CLASS* |777777|T_WS| *T_NS_SEPARATOR* *T_STRING* Whisky |777777|T_WS|
*T_NAMESPACE* |777777|T_WS| *T_STRING* DramIO ; |777777|T_WS|
*T_CLASS* |777777|T_WS| *T_STRING* Whisky |777777|T_WS|
{ |777777|T_WS|
*T_PRIVATE* |777777|T_WS| *T_VARIABLE* $name ; |777777|T_WS|