Ruby 语言中的 %q、%w 等在哪里定义? [英] Where in the Ruby language is %q, %w, etc., defined?
问题描述
Ruby 语言的大部分内容是方法而不是语法，所以我希望找到 %q、%w 等，定义为 Kernel 类.然而，他们不在那里.
So much of the Ruby language is methods rather than syntax, so I expected to find %q, %w, etc., defined as methods in the Kernel class. However, they're not there.
那么它们是在哪里定义的呢?它们是语言关键字吗?
So where are they defined? Are they language keywords?
推荐答案
它们在解析器中是硬编码"的；见
They are "hard coded" in the parser; see
查找相关代码的最简单方法是查找第二次出现的 str_sword(单引号词).所有分隔输入"语法都在此处定义:%Q、%q、%W、%w、%x、%r 和 %s(上面引用的两个版本都定义了相同的分隔输入标记集).
The easiest way to find the code in question is to look for the second occurrence of str_sword (Single-quoted WORDs). All the "delimited input" syntax is defined there: %Q, %q, %W, %w, %x, %r, and %s (both versions referenced above define the same set of delimited input markers).
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