COMPUTER SCIENCE AND ENGINEERING
COMPILER DESIGN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Groups
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Packets
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Lines
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Tokens
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Detailed explanation-1: -Explanation: Lexical analysis means Breaking the sequence of characters into tokens. 18. On what basis is the phase syntax analysis modeled? Explanation: The action of parsing the source program into proper syntactic classes known as lexical analysis.
Detailed explanation-2: -In computer science, lexical analysis, lexing or tokenization is the process of converting a sequence of characters (such as in a computer program or web page) into a sequence of lexical tokens (strings with an assigned and thus identified meaning).
Detailed explanation-3: -What is Lexical Analysis? Lexical analysis is the starting phase of the compiler. It gathers modified source code that is written in the form of sentences from the language preprocessor. The lexical analyzer is responsible for breaking these syntaxes into a series of tokens, by removing whitespace in the source code.
Detailed explanation-4: -Lexical Analyzer Architecture: How tokens are recognized “Get next token” is a command which is sent from the parser to the lexical analyzer. On receiving this command, the lexical analyzer scans the input until it finds the next token. It returns the token to Parser.
Detailed explanation-5: -Lexemes are said to be a sequence of characters (alphanumeric) in a token.