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Fix a few crashers with And_Rule, Kleene_Rule, Plus_Rule, and Optional_Rule

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Jonathan Turner
2009-05-29 02:58:05 +00:00
parent 4921d9a89e
commit 14be974fb0
2 changed files with 10 additions and 5 deletions
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9
langkit/langkit_parser.cpp
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@@ -95,7 +95,7 @@ std::pair<Token_Iterator, bool> And_Rule(Token_Iterator iter, Token_Iterator end
if (iter != end) {
std::pair<Token_Iterator, bool> result = lhs(iter, end, parent);
if (result.second) {
if ((result.second) && (result.first != end)) {
result = rhs(result.first, end, parent);
if (result.second) {
if (new_id != -1) {
@@ -133,7 +133,7 @@ std::pair<Token_Iterator, bool> Kleene_Rule
result.second = true;
while ((new_iter != end) && (result.second == true)) {
result = rule(iter, end, parent);
result = rule(new_iter, end, parent);
new_iter = result.first;
}
@@ -143,7 +143,6 @@ std::pair<Token_Iterator, bool> Kleene_Rule
parent->start = (*iter)->start;
parent->end = (*(result.first - 1))->end;
prev_parent->children.push_back(parent);
}
return std::pair<Token_Iterator, bool>(result.first, true);
@@ -169,7 +168,7 @@ std::pair<Token_Iterator, bool> Plus_Rule
if (result.second == true) {
loop_iter = result.first;
result.second = true;
while ((iter != end) && (result.second == true)) {
while ((loop_iter != end) && (result.second == true)) {
result = rule(loop_iter, end, parent);
loop_iter = result.first;
}
@@ -209,7 +208,7 @@ std::pair<Token_Iterator, bool> Optional_Rule
std::pair<Token_Iterator, bool> result;
result.second = true;
if ((new_iter != end) && (result.second == true)) {
result = rule(iter, end, parent);
result = rule(new_iter, end, parent);
new_iter = result.first;
}