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3.1 Outline of a Bison Grammar

A Bison grammar file has four main sections, shown here with the appropriate delimiters:

     %{
       Prologue
     %}
     
     Bison declarations
     
     %%
     Grammar rules
     %%
     
     Epilogue

Comments enclosed in ‘/* ... */’ may appear in any of the sections. As a GNU extension, ‘//’ introduces a comment that continues until end of line.