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the lexer

the lexer

the lexer

the lexer

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The lexer for this example is more complicated than the one for the calculator ; quite a bit so .

该示例中的 lexer 比计算器的更为复杂；复杂得多。

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These directives are used to define the tokens the lexer can return .

这些指令用来定义 lexer 可以返回的记号。

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The lexer is the part of our language knowledge that says "this is a sentence ; this is punctuation ; twenty-three is a single word . "

词法分析器是我们的语言知识中识别 “这是一个句子；这是标点；twenty-three 是一个单一的词 ”的那一部分。

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The symbols produced by the lexer are called terminals or tokens .

lexer 生成的符号称为终结符（terminals ）或者记号（tokens ）。

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The tokens ALPHA, INT, and REAL are typically provided from the lexer .

INT 和 REAL 通常由 lexer 提供。

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This does mean that the lexer and the parser both have to know that an empty line separates a header from a body .

这确实意味着 lexer 和解析器都必须明白，是一个空行将标题从主体中分离了出来。

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