wehub-resource-sync
29 lines
734 B
ReStructuredText
29 lines
734 B
ReStructuredText
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Lexical Analysis
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Lexical Analysis (词法分析)
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Lexical analysis is the process of converting a character sequence into a token sequence. It is the first phase of compilation and also the foundation of natural language processing.
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Main Tasks:
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1. Tokenization (分词)
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2. Removing whitespace/comments
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3. Tracking line numbers
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4. Generating symbol tables
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Example code:
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```python
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# This is a comment
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x = 123
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if (x > 0) {
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print("Positive")
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}
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```
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Mathematical Representation:
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$$ T = Lex(S) $$
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Where $S$ is the input string and $T$ is the output token sequence.
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See details in [link](#lexer-implementation). For HTML tags: <div class="important"></div> |