LEXICAL ANALYSIS
ROLE OF THE LEXICAL ANALYZER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ANTLR
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DRASTAR
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FLEX
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All of these
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Detailed explanation-1: -8. Which one is a lexer Generator? Explanation: ANTLR – Can generate lexical analyzers and parsers. DFASTAR – Generates DFA matrix table-driven lexers in C++.
Detailed explanation-2: -LEX is a program generator designed for lexical processing of character input/output stream. Anything from simple text search program that looks for pattern in its input-output file to a C compiler that transforms a program into optimized code. In program with structure input-output two tasks occurs over and over.
Detailed explanation-3: -A lexical analyzer, also called a lexer, is responsible for breaking a program up into a sequence of lexemes.
Detailed explanation-4: -Lex is a program that generates lexical analyzer.
Detailed explanation-5: -The lexer turns source code into a stream of tokens. This term is actually a shortened version of “lexical analysis”. A token is essentially a representation of each item in the code at a simple level.