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Optimize and break up parsing

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This commit is contained in:
Tom MacWright
2013-01-23 18:01:56 -05:00
parent 8741e69c10
commit bda41b812c
1 changed files with 75 additions and 41 deletions
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js/id/connection.js
+75 -41
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@@ -3,7 +3,6 @@ iD.Connection = function() {
var event = d3.dispatch('auth', 'load'),
url = 'http://www.openstreetmap.org',
connection = {},
refNodes = {},
user = {},
keys,
inflight = {},
@@ -34,7 +33,6 @@ iD.Connection = function() {
var nelems = obj.getElementsByTagName('nd'), nodes = new Array(nelems.length);
for (var i = 0, l = nelems.length; i < l; i++) {
nodes[i] = 'n' + nelems[i].attributes.ref.nodeValue;
refNodes['n' + nelems[i].attributes.ref.nodeValue] = true;
}
return nodes;
}
@@ -63,23 +61,69 @@ iD.Connection = function() {
}
function objectData(obj) {
var o = {
type: obj.nodeName,
members: getMembers(obj),
nodes: getNodes(obj),
tags: getTags(obj)
};
switch(obj.type) {
case 'node': return nodeData(obj);
case 'way': return wayData(obj);
case 'relation': return relationData(obj);
}
}
function nodeData(obj) {
var o = { type: 'node', tags: getTags(obj) };
for (var i = 0, l = obj.attributes.length; i < l; i++) {
o[obj.attributes[i].nodeName] = obj.attributes[i].nodeValue;
}
if (o.lon && o.lat) {
o.loc = [parseFloat(o.lon), parseFloat(o.lat)];
delete o.lon;
delete o.lat;
delete o.lon; delete o.lat;
}
o.id = iD.Entity.id.fromOSM('node', o.id);
return new iD.Node(o);
}
function wayData(obj) {
var o = { type: 'way', nodes: getNodes(obj),
tags: getTags(obj)
};
for (var i = 0, l = obj.attributes.length; i < l; i++) {
o[obj.attributes[i].nodeName] = obj.attributes[i].nodeValue;
}
o.id = iD.Entity.id.fromOSM('way', o.id);
return new iD.Way(o);
}
function relationData(obj) {
var o = {
type: 'relation', members: getMembers(obj),
tags: getTags(obj)
};
for (var i = 0, l = obj.attributes.length; i < l; i++) {
o[obj.attributes[i].nodeName] = obj.attributes[i].nodeValue;
}
o.id = iD.Entity.id.fromOSM('relation', o.id);
return new iD.Relation(o);
}
function addWay(o, wparentsOf) {
for (var i = 0; i < o.nodes.length; i++) {
if (o.nodes[i]) {
if (wparentsOf[o.nodes[i]] === undefined) {
wparentsOf[o.nodes[i]] = [];
}
wparentsOf[o.nodes[i]].push(o.id);
}
}
}
function addRelation(o, rparentsOf) {
for (var i = 0; i < o.members.length; i++) {
if (o.members[i].id) {
if (rparentsOf[o.members[i].id] === undefined) {
rparentsOf[o.members[i].id] = [];
}
rparentsOf[o.members[i].id].push(o.id);
}
}
o.id = iD.Entity.id.fromOSM(o.type, o.id);
if (o.type === 'node') o._poi = !refNodes[o.id];
return new iD.Entity[o.type](o);
}
function parse(dom) {
@@ -90,42 +134,32 @@ iD.Connection = function() {
var rparentsOf = {},
wparentsOf = {};
function addEntity(obj) {
var o = objectData(obj);
entities[o.id] = o;
var i;
if (o.type === 'relation') {
for (i = 0; i < o.members.length; i++) {
if (o.members[i].id) {
if (rparentsOf[o.members[i].id] === undefined) {
rparentsOf[o.members[i].id] = [];
}
rparentsOf[o.members[i].id].push(o.id);
}
}
}
if (o.type === 'way') {
for (i = 0; i < o.nodes.length; i++) {
if (o.nodes[i]) {
if (wparentsOf[o.nodes[i]] === undefined) {
wparentsOf[o.nodes[i]] = [];
}
wparentsOf[o.nodes[i]].push(o.id);
}
}
var o;
for (i = 0, l = root.childNodes.length; i < l; i++) {
switch(root.childNodes[i].nodeName) {
case 'node':
o = nodeData(root.childNodes[i]);
entities[o.id] = o;
break;
case 'way':
o = wayData(root.childNodes[i]);
addWay(o, wparentsOf);
entities[o.id] = o;
break;
case 'relation':
o = relationData(root.childNodes[i]);
addRelation(o, rparentsOf);
entities[o.id] = o;
break;
}
}
_.forEach(root.getElementsByTagName('way'), addEntity);
_.forEach(root.getElementsByTagName('node'), addEntity);
_.forEach(root.getElementsByTagName('relation'), addEntity);
var g = iD.Graph(entities);
for (var i in wparentsOf) {
if (entities[i]) g.transient(entities[i],
'parentWays', d3.functor(wparentsOf[i]));
if (entities[i]) entities[i].update({ _poi: true });
}
for (i in rparentsOf) {