Compiler design r20 material

  • What is compiler design subject?

    Compiler design covers basic translation mechanism and error detection & recovery.
    It includes lexical, syntax, and semantic analysis as front end, and code generation and optimization as back-end..

  • What is the lexical phase of a compiler?

    The first phase of the compiler is the lexical analyzer, also known as the scanner, which recognizes the basic language units, called tokens.
    The exact characters in a token is called its lexeme..

What skills do you need to become a compiler?

Apply the techniques and design different components (phases) of a compiler.
Ability to implement practical aspects of automata theory.
Use the tools Lex, Yacc in compiler construction.
Symbol – An atomic unit, such as:

  • a digit
  • character
  • lower-case letter
  • etc.
    Sometimesa word.[Formal language does not deal with the “meaning” of thesymbols.] .

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