propane/assets/parser.d.erb

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<% if @grammar.modulename %>
module <%= @grammar.modulename %>;
<% end %>
class <%= classname %>
{
enum
{
<% @grammar.tokens.each_with_index do |token, index| %>
<% if token.name %>
TOKEN_<%= token.c_name %> = <%= index %>,
<% end %>
<% end %>
}
static immutable string TokenNames[] = [
<% @grammar.tokens.each_with_index do |token, index| %>
<% if token.name %>
"<%= token.name %>",
<% else %>
null,
<% end %>
<% end %>
];
private struct Transition
{
uint first;
uint last;
uint destination;
}
private struct LexerState
{
uint transition_table_index;
uint n_transitions;
uint accepts;
}
<% transition_table, state_table = lexer_dfa.build_tables %>
private static const Transition transitions[] = [
<% transition_table.each do |transition_table_entry| %>
Transition(<%= transition_table_entry[:first] %>u, <%= transition_table_entry[:last] %>u, <%= transition_table_entry[:destination] %>u),
<% end %>
];
private static const LexerState lexer_states[] = [
<% state_table.each do |state_table_entry| %>
LexerState(<%= state_table_entry[:transition_table_index] %>u, <%= state_table_entry[:n_transitions] %>u, <%= state_table_entry[:accepts] %>u),
<% end %>
];
}