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ensure that engines added to the leftQueueMap are real rather than lookarounds

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Alex Coyte 2017-04-04 11:38:27 +10:00 committed by Matthew Barr
parent aa4ae755d8
commit 894e6835e6
1 changed files with 9 additions and 1 deletions
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10
src/rose/rose_build_bytecode.cpp
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@ -133,6 +133,8 @@ namespace ue2 {
namespace /* anon */ {
static constexpr u32 INVALID_QUEUE = ~0U;
struct left_build_info {
// Constructor for an engine implementation.
left_build_info(u32 q, u32 l, u32 t, rose_group sm,
@ -146,7 +148,7 @@ struct left_build_info {
explicit left_build_info(const vector<vector<LookEntry>> &looks)
: has_lookaround(true), lookaround(looks) {}
u32 queue = 0; /* uniquely idents the left_build_info */
u32 queue = INVALID_QUEUE; /* uniquely idents the left_build_info */
u32 lag = 0;
u32 transient = 0;
rose_group squash_mask = ~rose_group{0};
@ -155,6 +157,7 @@ struct left_build_info {
u8 countingMiracleCount = 0;
CharReach countingMiracleReach;
u32 countingMiracleOffset = 0; /* populated later when laying out bytecode */
/* leftfix can be completely implemented with lookaround */
bool has_lookaround = false;
vector<vector<LookEntry>> lookaround; // alternative implementation to the NFA
};
@ -5693,6 +5696,11 @@ map<left_id, u32> makeLeftQueueMap(const RoseGraph &g,
const map<RoseVertex, left_build_info> &leftfix_info) {
map<left_id, u32> lqm;
for (const auto &e : leftfix_info) {
if (e.second.has_lookaround) {
continue;
}
DEBUG_PRINTF("%zu: using queue %u\n", g[e.first].index, e.second.queue);
assert(e.second.queue != INVALID_QUEUE);
left_id left(g[e.first].left);
assert(!contains(lqm, left) || lqm[left] == e.second.queue);
lqm[left] = e.second.queue;