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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// jsshell.cpp - Utilities for the JS shell
#include "shell/jsshell.h"
#include "jsapi.h"
#include "jsfriendapi.h"
#include "vm/StringBuffer.h"
using namespace JS;
namespace js {
namespace shell {
bool
GenerateInterfaceHelp(JSContext* cx, HandleObject obj, const char* name)
{
AutoIdVector idv(cx);
if (!GetPropertyKeys(cx, obj, JSITER_OWNONLY | JSITER_HIDDEN, &idv))
return false;
StringBuffer buf(cx);
if (!buf.append(' '))
return false;
for (size_t i = 0; i < idv.length(); i++) {
RootedValue v(cx);
RootedId id(cx, idv[i]);
if (!JS_GetPropertyById(cx, obj, id, &v))
return false;
if (!v.isObject())
continue;
bool hasHelp = false;
RootedObject prop(cx, &v.toObject());
if (!JS_GetProperty(cx, prop, "usage", &v))
return false;
if (v.isString())
hasHelp = true;
if (!JS_GetProperty(cx, prop, "help", &v))
return false;
if (v.isString())
hasHelp = true;
if (hasHelp) {
if (!buf.append(' ') ||
!buf.append(name, strlen(name)) ||
!buf.append('.') ||
!buf.append(JSID_TO_FLAT_STRING(id)))
{
return false;
}
}
}
RootedString s(cx, buf.finishString());
if (!s || !JS_DefineProperty(cx, obj, "help", s, 0))
return false;
if (!buf.append(name, strlen(name)) || !buf.append(" - interface object", 20))
return false;
s = buf.finishString();
if (!s || !JS_DefineProperty(cx, obj, "usage", s, 0))
return false;
return true;
}
} // namespace shell
} // namespace js
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