josh/propane
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Do not consume lookahead token when reducing

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josh committed 2022-06-25 21:35:54 -04:00
1 parent f2cc5b112e
commit 2fbe13e071
3 files changed
+41 -3
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assets/parser.d.erb
+21 -3
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@@ -323,7 +323,6 @@ class <%= @classname %>
if (reduced_rule_set != 0xFFFFFFFFu)
{
shift_state = check_shift(states[$-1], reduced_rule_set);
reduced_rule_set = 0xFFFFFFFFu;
}
if (shift_state == 0xFFFFFFFFu)
{
@@ -337,7 +336,14 @@ class <%= @classname %>
return true;
}
states ~= shift_state;
token = _TOKEN_NONE;
if (reduced_rule_set == 0xFFFFFFFFu)
{
token = _TOKEN_NONE;
}
else
{
reduced_rule_set = 0xFFFFFFFFu;
}
continue;
}
@@ -398,7 +404,19 @@ class <%= @classname %>
if ((reduces[i].token == token) ||
(reduces[i].token == _TOKEN_NONE))
{
writeln("Reducing rule ", reduces[i].rule, ", rule set ", reduces[i].rule_set);
write("Reducing rule ", reduces[i].rule, ", rule set ", reduces[i].rule_set, " lookahead ");
if (token < _TOKEN_COUNT)
{
writeln(token_names[token]);
}
else if (token == _TOKEN_EOF)
{
writeln("{EOF}");
}
else
{
writeln("{other}");
}
return i;
}
}