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Introduce custom adjacency-list based graph

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This commit is contained in:
Alex Coyte
2016-08-24 16:12:51 +10:00
committed by Matthew Barr
parent 05683655cb
commit e1e9010cac
92 changed files with 3730 additions and 1812 deletions
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163
src/nfagraph/ng_holder.cpp
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@@ -36,123 +36,33 @@ using namespace std;
namespace ue2 {
// internal use only
static NFAVertex addSpecialVertex(NFAGraph &g, SpecialNodes id) {
NFAVertex v = add_vertex(g);
static NFAVertex addSpecialVertex(NGHolder &g, SpecialNodes id) {
NFAVertex v(add_vertex(g));
g[v].index = id;
return v;
}
NGHolder::NGHolder(void)
: g(),
// add initial special nodes
start(addSpecialVertex(g, NODE_START)),
startDs(addSpecialVertex(g, NODE_START_DOTSTAR)),
accept(addSpecialVertex(g, NODE_ACCEPT)),
acceptEod(addSpecialVertex(g, NODE_ACCEPT_EOD)),
// misc data
numVertices(N_SPECIALS),
numEdges(0),
isValidNumEdges(true),
isValidNumVertices(true) {
// wire up some fake edges for the stylized bits of the NFA
add_edge(start, startDs, *this);
add_edge(startDs, startDs, *this);
add_edge(accept, acceptEod, *this);
g[start].char_reach.setall();
g[startDs].char_reach.setall();
}
NGHolder::NGHolder(nfa_kind k)
: kind (k), g(),
: kind (k),
// add initial special nodes
start(addSpecialVertex(g, NODE_START)),
startDs(addSpecialVertex(g, NODE_START_DOTSTAR)),
accept(addSpecialVertex(g, NODE_ACCEPT)),
acceptEod(addSpecialVertex(g, NODE_ACCEPT_EOD)),
// misc data
numVertices(N_SPECIALS),
numEdges(0),
isValidNumEdges(true),
isValidNumVertices(true) {
start(addSpecialVertex(*this, NODE_START)),
startDs(addSpecialVertex(*this, NODE_START_DOTSTAR)),
accept(addSpecialVertex(*this, NODE_ACCEPT)),
acceptEod(addSpecialVertex(*this, NODE_ACCEPT_EOD)) {
// wire up some fake edges for the stylized bits of the NFA
add_edge(start, startDs, *this);
add_edge(startDs, startDs, *this);
add_edge(accept, acceptEod, *this);
g[start].char_reach.setall();
g[startDs].char_reach.setall();
(*this)[start].char_reach.setall();
(*this)[startDs].char_reach.setall();
}
NGHolder::~NGHolder(void) {
DEBUG_PRINTF("destroying holder @ %p\n", this);
}
size_t num_edges(NGHolder &h) {
if (!h.isValidNumEdges) {
h.numEdges = num_edges(h.g);
h.isValidNumEdges = true;
}
return h.numEdges;
}
size_t num_edges(const NGHolder &h) {
if (!h.isValidNumEdges) {
return num_edges(h.g);
}
return h.numEdges;
}
size_t num_vertices(NGHolder &h) {
if (!h.isValidNumVertices) {
h.numVertices = num_vertices(h.g);
h.isValidNumVertices = true;
}
return h.numVertices;
}
size_t num_vertices(const NGHolder &h) {
if (!h.isValidNumVertices) {
return num_vertices(h.g);
}
return h.numVertices;
}
void remove_edge(const NFAEdge &e, NGHolder &h) {
remove_edge(e, h.g);
assert(!h.isValidNumEdges || h.numEdges > 0);
h.numEdges--;
}
void remove_edge(NFAVertex u, NFAVertex v, NGHolder &h) {
remove_edge(u, v, h.g);
assert(!h.isValidNumEdges || h.numEdges > 0);
h.numEdges--;
}
void remove_vertex(NFAVertex v, NGHolder &h) {
remove_vertex(v, h.g);
assert(!h.isValidNumVertices || h.numVertices > 0);
h.numVertices--;
}
void clear_vertex(NFAVertex v, NGHolder &h) {
h.isValidNumEdges = false;
clear_vertex_faster(v, h.g);
}
void clear_in_edges(NFAVertex v, NGHolder &h) {
h.isValidNumEdges = false;
clear_in_edges(v, h.g);
}
void clear_out_edges(NFAVertex v, NGHolder &h) {
h.isValidNumEdges = false;
clear_out_edges(v, h.g);
}
void clear_graph(NGHolder &h) {
NGHolder::vertex_iterator vi, ve;
for (tie(vi, ve) = vertices(h); vi != ve;) {
@@ -166,6 +76,8 @@ void clear_graph(NGHolder &h) {
}
assert(num_vertices(h) == N_SPECIALS);
renumber_vertices(h); /* ensure that we reset our next allocated index */
renumber_edges(h);
// Recreate special stylised edges.
add_edge(h.start, h.startDs, h);
@@ -173,56 +85,13 @@ void clear_graph(NGHolder &h) {
add_edge(h.accept, h.acceptEod, h);
}
std::pair<NFAEdge, bool> add_edge(NFAVertex u, NFAVertex v, NGHolder &h) {
assert(edge(u, v, h.g).second == false);
pair<NFAEdge, bool> e = add_edge(u, v, h.g);
h.g[e.first].index = h.numEdges++;
assert(!h.isValidNumEdges || h.numEdges > 0); // no wrapping
return e;
}
std::pair<NFAEdge, bool> add_edge(NFAVertex u, NFAVertex v,
const NFAGraph::edge_property_type &ep,
NGHolder &h) {
assert(edge(u, v, h.g).second == false);
pair<NFAEdge, bool> e = add_edge(u, v, ep, h.g);
h.g[e.first].index = h.numEdges++;
assert(!h.isValidNumEdges || h.numEdges > 0); // no wrapping
return e;
}
NFAVertex add_vertex(NGHolder &h) {
NFAVertex v = add_vertex(h.g);
h[v].index = h.numVertices++;
assert(h.numVertices > 0); // no wrapping
return v;
}
NFAVertex add_vertex(const NFAGraph::vertex_property_type &vp, NGHolder &h) {
NFAVertex v = add_vertex(h);
u32 i = h.g[v].index; /* preserve index */
h.g[v] = vp;
h.g[v].index = i;
return v;
}
void NGHolder::renumberEdges() {
numEdges = renumberGraphEdges(g);
isValidNumEdges = true;
}
void NGHolder::renumberVertices() {
numVertices = renumberGraphVertices(g);
isValidNumVertices = true;
}
NFAVertex NGHolder::getSpecialVertex(u32 id) const {
switch (id) {
case NODE_START: return start;
case NODE_START_DOTSTAR: return startDs;
case NODE_ACCEPT: return accept;
case NODE_ACCEPT_EOD: return acceptEod;
default: return nullptr;
case NODE_START: return start;
case NODE_START_DOTSTAR: return startDs;
case NODE_ACCEPT: return accept;
case NODE_ACCEPT_EOD: return acceptEod;
default: return null_vertex();
}
}