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Related Content: CS606 - VU Lectures, Handouts, PPT Slides, Assignments, Quizzes, Papers & Books of Compiler Construction
Let’s go through an example of using YACC to implement the ad-hoc scheme for an arithmetic calculator.
The YACC file for a calculator grammar is as follows:
%token NUMBER LPAREN RPAREN
Read more: CS606 - Compiler Construction - Lecture Handout 34
%token PLUS MINUS TIMES DIVIDE
%%
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Related Content: CS606 - VU Lectures, Handouts, PPT Slides, Assignments, Quizzes, Papers & Books of Compiler Construction
Implementing Ad-Hoc Scheme
The parser needs a mechanism to pass values of attributes from definitions in one snippet
to uses in another. We will adopt notation used by YACC for snippets and passing
values. Recall that the skeleton LR(1) parser stored two values on the stack
〈symbol,state〉.
Read more: CS606 - Compiler Construction - Lecture Handout 33
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