SYNOPSIS

This example illustrates a way to set a naming scheme for the grammar productions using give_token_name. give_token_name: The name of the production is the Left Hand Side of the Production Rule followed by the word _is_ followed by the concatenation of the names of the tokens in the right hand side (separated by underscores).

Compile it with:

$ eyapp -C give_names_to_tokens.eyp 

and run it: $ ./give_names_to_tokens.pm -t -i -c '*a = b'

It will produce an output like:

s_is_ASSIGN(l_is_STAR(r_is_l(l_is_VAR(TERMINAL[a]))),r_is_l(l_is_VAR(TERMINAL[b])))

The main difference between this file and give_token_names.eyp is that here '=' and '*' are used and therefore we must associate with them identifiers via the method tokennames.