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// Copyright 2014 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.
// Called from a desugaring in the parser.
(function(global, utils) {
"use strict";
%CheckIsBootstrapping();
// -------------------------------------------------------------------
// Imports
var GlobalMap = global.Map;
var InternalArray = utils.InternalArray;
// -------------------------------------------------------------------
var callSiteCache = new GlobalMap;
var mapGetFn = GlobalMap.prototype.get;
var mapSetFn = GlobalMap.prototype.set;
function SameCallSiteElements(rawStrings, other) {
var length = rawStrings.length;
var other = other.raw;
if (length !== other.length) return false;
for (var i = 0; i < length; ++i) {
if (rawStrings[i] !== other[i]) return false;
}
return true;
}
function GetCachedCallSite(siteObj, hash) {
var obj = %_Call(mapGetFn, callSiteCache, hash);
if (IS_UNDEFINED(obj)) return;
var length = obj.length;
for (var i = 0; i < length; ++i) {
if (SameCallSiteElements(siteObj, obj[i])) return obj[i];
}
}
function SetCachedCallSite(siteObj, hash) {
var obj = %_Call(mapGetFn, callSiteCache, hash);
var array;
if (IS_UNDEFINED(obj)) {
array = new InternalArray(1);
array[0] = siteObj;
%_Call(mapSetFn, callSiteCache, hash, array);
} else {
obj.push(siteObj);
}
return siteObj;
}
function GetTemplateCallSite(siteObj, rawStrings, hash) {
var cached = GetCachedCallSite(rawStrings, hash);
if (!IS_UNDEFINED(cached)) return cached;
%AddNamedProperty(siteObj, "raw", %ObjectFreeze(rawStrings),
READ_ONLY | DONT_ENUM | DONT_DELETE);
return SetCachedCallSite(%ObjectFreeze(siteObj), hash);
}
// ----------------------------------------------------------------------------
// Exports
%InstallToContext(["get_template_call_site", GetTemplateCallSite]);
})
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