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What is parser ? Write the role of parser. What are the most popular parsing techniques ? OR Explain about basic parsing techniques. What is top-down parsing ? Explain in detail.

What is Parsing? Parsing is like analyzing the structure of a sentence in a language. When you read a sentence, you understand it by breaking ...

Describe the capabilities of CFG.

Define parse tree. What are the conditions for constructing a parse tree from a CFG ?

A parse tree is like a family tree for a sentence in a programming language or any other context-free language. It shows how the sentence ...

Explain formal grammar and its application to syntax analyzer.

Describe grammar.

When writing a grammar, it’s important to ensure that variables and terminals are distinct, meaning no terminal can be a non-terminal and vice versa. In ...

What are the various LEX actions that are used in LEX programming ?

Explain the term token, lexeme and pattern.

Token: Lexeme: Pattern:

Explain the automatic generation of lexical analyzer.

Write short notes on lexical analyzer generator.

A lexical analyzer generator, such as LEX, is a tool used in compiler design to automate the process of creating a lexical analyzer, which is ...

Explain the implementation of lexical analyzer.

Lexical analyzer can be implemented in following step : 5. DFA (Deterministic Finite Automaton): NFAs are converted into DFAs, which are simpler versions of NFAs ...