josh/propane
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Store parse result; add result_type grammar keyword

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josh committed 2022-10-12 20:56:14 -04:00
1 parent 02be6de48e
commit 31970522de
3 files changed
+39 -16
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assets/parser.d.erb
+16 -5
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@@ -343,6 +343,17 @@ class <%= @classname %>
uint n_reduce_entries;
}
private struct StateResult
{
uint state;
<%= @grammar.result_type %> result;
this(uint state)
{
this.state = state;
}
}
<% state_table, shift_table, reduce_table = @parser.build_tables %>
private static immutable Shift shifts[] = [
<% shift_table.each do |shift| %>
@@ -373,7 +384,7 @@ class <%= @classname %>
{
Lexer.LexedToken lexed_token;
uint token = _TOKEN_COUNT;
uint[] states = new uint[](1);
StateResult[] states = new StateResult[](1);
uint reduced_rule_set = 0xFFFFFFFFu;
for (;;)
{
@@ -385,11 +396,11 @@ class <%= @classname %>
uint shift_state = 0xFFFFFFFFu;
if (reduced_rule_set != 0xFFFFFFFFu)
{
shift_state = check_shift(states[$-1], reduced_rule_set);
shift_state = check_shift(states[$-1].state, reduced_rule_set);
}
if (shift_state == 0xFFFFFFFFu)
{
shift_state = check_shift(states[$-1], token);
shift_state = check_shift(states[$-1].state, token);
}
if (shift_state != 0xFFFFFFFFu)
{
@@ -398,7 +409,7 @@ class <%= @classname %>
/* Successful parse. */
return true;
}
states ~= shift_state;
states ~= StateResult(shift_state);
if (reduced_rule_set == 0xFFFFFFFFu)
{
token = _TOKEN_COUNT;
@@ -410,7 +421,7 @@ class <%= @classname %>
continue;
}
uint reduce_index = check_reduce(states[$-1], token);
uint reduce_index = check_reduce(states[$-1].state, token);
if (reduce_index != 0xFFFFFFFFu)
{
reduced_rule_set = reduces[reduce_index].rule_set;