在编译的哪个步骤中删除了注释？ [英] In which step of compilation are comments removed?

问题描述

编译程序有几个步骤：

• 行重构


• 词法分析


• 预处理。


• 语法分析


• 语义分析

• line reconstruction
• lexical analysis
• Preprocessing.
• syntax analysis
• semantic analysis

在第一个注释中删除了注释

Is removal of comments in the first step "line reconstruction"?

推荐答案

• 预处理是其自身阶段，具有自己的扫描和


• 我是一名编译器作家，而且从未听说过线重构。编译器不处理行：它们处理令牌流。您的引文特别指出，这是几种奇怪语言的特例。


• 您已经省略了流分析，优化，寄存器分配和代码生成等功能。
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• 在词法分析过程中，注释被忽略，而不是被删除，有时在概念上被描述为筛选和扫描，在这种情况下，您可以说评论被筛选了像空白一样。


• Preprocessing is a phase of its own with its own scanning and parsing, which precede lexical analysis.
• I'm a compiler writer and I've never heard of 'line reconstruction'. Compilers don't process lines: they process token streams. Your citation specifically says this is a special case for a few odd languages.
• You've left out flow analysis, optimization, register allocation, and code generation, and a few more.
• Comments are ignored, not removed, during lexical analysis, which is sometimes conceptually described as 'screening' and 'scanning', in which case you can say comments are screened out, like white space.

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