Lecture 3B - Lexical Analyzer Implementation & Practice Questions | Tokenization | Compiler Design

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Longest Match ( Maximal Munch ) rule for Tokenization in Lexical Analysis phase of Compiler:
🔹A Challenge in Scanning:
● When there are multiple ways we could scan the input, how do we know which one to pick?
🔹Solution: Longest Match (Maximal Munch):
We should find the longest match accepted by the lexer.
i.e. Always match the longest possible prefix of the remaining text.
For example, treat ifif as a variable, not two keywords.
#CompilerDesign
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Видео Lecture 3B - Lexical Analyzer Implementation & Practice Questions | Tokenization | Compiler Design канала GO Classes for GATE CS