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#include "lexer.ih"
/*
When nested evaluation takes place, the current empty index of the media
stack is pushed and d_empty is set to the current d_media_st size.
An empty media stack has size 0, which is just before the first element to
push. So, we'll set d_empty to the current size, and then push the string to
evaluate.
d_empty_size, therefore, is in the world of counts, not offsets.
*/
void lexer_begin_nested(register Lexer *lp, register char const *txt)
{
register StackValue stValue;
stValue.u_size_t = lp->d_empty_size;
stack_push(&lp->d_empty_st, stValue);
lp->d_empty_size = stack_size(&lp->d_media_st);
if (message_show(MSG_INFO))
message("Nested media begins at stack size %u",
(unsigned)lp->d_empty_size);
l_push_level(lp, txt);
}
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