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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
var SelectionBroker = function() {
this.brokers = [];
this.dispatching = false;
this.lastDispatchingHandler = null;
this.nodePositionMap = [];
this.sortedPositionList = [];
this.positionNodeMap = [];
};
SelectionBroker.prototype.addSelectionHandler = function(handler) {
this.brokers.push(handler);
}
SelectionBroker.prototype.setNodePositionMap = function(map) {
let broker = this;
if (!map) return;
broker.nodePositionMap = map;
broker.positionNodeMap = [];
broker.sortedPositionList = [];
let next = 0;
for (let i in broker.nodePositionMap) {
broker.sortedPositionList[next] = Number(broker.nodePositionMap[i]);
broker.positionNodeMap[next++] = i;
}
broker.sortedPositionList = sortUnique(broker.sortedPositionList,
function(a,b) { return a - b; });
this.positionNodeMap.sort(function(a,b) {
let result = broker.nodePositionMap[a] - broker.nodePositionMap[b];
if (result != 0) return result;
return a - b;
});
}
SelectionBroker.prototype.select = function(from, locations, selected) {
let broker = this;
if (!broker.dispatching) {
broker.lastDispatchingHandler = from;
try {
broker.dispatching = true;
let enrichLocations = function(locations) {
result = [];
for (let location of locations) {
let newLocation = {};
if (location.pos_start != undefined) {
newLocation.pos_start = location.pos_start;
}
if (location.pos_end != undefined) {
newLocation.pos_end = location.pos_end;
}
if (location.node_id != undefined) {
newLocation.node_id = location.node_id;
}
if (location.block_id != undefined) {
newLocation.block_id = location.block_id;
}
if (newLocation.pos_start == undefined &&
newLocation.pos_end == undefined &&
newLocation.node_id != undefined) {
if (broker.nodePositionMap && broker.nodePositionMap[location.node_id]) {
newLocation.pos_start = broker.nodePositionMap[location.node_id];
newLocation.pos_end = location.pos_start + 1;
}
}
result.push(newLocation);
}
return result;
}
locations = enrichLocations(locations);
for (var b of this.brokers) {
if (b != from) {
b.brokeredSelect(locations, selected);
}
}
}
finally {
broker.dispatching = false;
}
}
}
SelectionBroker.prototype.clear = function(from) {
this.lastDispatchingHandler = null;
if (!this.dispatching) {
try {
this.dispatching = true;
this.brokers.forEach(function(b) {
if (b != from) {
b.brokeredClear();
}
});
} finally {
this.dispatching = false;
}
}
}
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