Virtual University of Pakistan Video Lectures, Handouts, PPT, Quizzes, Assignments & Papers
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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
Let’s consider the implementation of the C++ classes for the non-terminals. We start with Expr.
bool Expr::isPresent()
Read more: CS606 - Compiler Construction - Lecture Handout 15
{
Term* op1 = new Term(s);
if(!op1->isPresent())
return false;
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