The Tor Browser: js/src/jsapi-tests/testDebugger.cpp@b8a032363ba2 (annotated)

js/src/jsapi-tests/testDebugger.cpp@b8a032363ba2 (annotated)

js/src/jsapi-tests/testDebugger.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
  * vim: set ts=8 sts=4 et sw=4 tw=99:
  */
 /* 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/. */
 #include "jscntxt.h"
 #include "js/OldDebugAPI.h"
 #include "jsapi-tests/tests.h"
 using namespace js;
 static int callCounts[2] = {0, 0};
 static void *
 callCountHook(JSContext *cx, JSAbstractFramePtr frame, bool isConstructing, bool before,
               bool *ok, void *closure)
 {
     callCounts[before]++;
     JS::RootedValue thisv(cx);
     frame.getThisValue(cx, &thisv); // assert if fp is incomplete
     return cx;  // any non-null value causes the hook to be called again after
 }
 BEGIN_TEST(testDebugger_bug519719)
 {
     CHECK(JS_SetDebugMode(cx, true));
     JS_SetCallHook(rt, callCountHook, nullptr);
     EXEC("function call(fn) { fn(0); }\n"
          "function f(g) { for (var i = 0; i < 9; i++) call(g); }\n"
          "f(Math.sin);\n"    // record loop, starting in f
          "f(Math.cos);\n");  // side exit in f -> call
     CHECK_EQUAL(callCounts[0], 20);
     CHECK_EQUAL(callCounts[1], 20);
     return true;
 }
 END_TEST(testDebugger_bug519719)
 static void *
 nonStrictThisHook(JSContext *cx, JSAbstractFramePtr frame, bool isConstructing, bool before,
                   bool *ok, void *closure)
 {
     if (before) {
         bool *allWrapped = (bool *) closure;
         JS::RootedValue thisv(cx);
         frame.getThisValue(cx, &thisv);
         *allWrapped = *allWrapped && !JSVAL_IS_PRIMITIVE(thisv);
     }
     return nullptr;
 }
 BEGIN_TEST(testDebugger_getThisNonStrict)
 {
     bool allWrapped = true;
     CHECK(JS_SetDebugMode(cx, true));
     JS_SetCallHook(rt, nonStrictThisHook, (void *) &allWrapped);
     EXEC("function nonstrict() { }\n"
          "Boolean.prototype.nonstrict = nonstrict;\n"
          "String.prototype.nonstrict = nonstrict;\n"
          "Number.prototype.nonstrict = nonstrict;\n"
          "Object.prototype.nonstrict = nonstrict;\n"
          "nonstrict.call(true);\n"
          "true.nonstrict();\n"
          "nonstrict.call('');\n"
          "''.nonstrict();\n"
          "nonstrict.call(42);\n"
          "(42).nonstrict();\n"
          // The below don't really get 'wrapped', but it's okay.
          "nonstrict.call(undefined);\n"
          "nonstrict.call(null);\n"
          "nonstrict.call({});\n"
          "({}).nonstrict();\n");
     CHECK(allWrapped);
     return true;
 }
 END_TEST(testDebugger_getThisNonStrict)
 static void *
 strictThisHook(JSContext *cx, JSAbstractFramePtr frame, bool isConstructing, bool before,
                bool *ok, void *closure)
 {
     if (before) {
         bool *anyWrapped = (bool *) closure;
         JS::RootedValue thisv(cx);
         frame.getThisValue(cx, &thisv);
         *anyWrapped = *anyWrapped || !JSVAL_IS_PRIMITIVE(thisv);
     }
     return nullptr;
 }
 BEGIN_TEST(testDebugger_getThisStrict)
 {
     bool anyWrapped = false;
     CHECK(JS_SetDebugMode(cx, true));
     JS_SetCallHook(rt, strictThisHook, (void *) &anyWrapped);
     EXEC("function strict() { 'use strict'; }\n"
          "Boolean.prototype.strict = strict;\n"
          "String.prototype.strict = strict;\n"
          "Number.prototype.strict = strict;\n"
          "strict.call(true);\n"
          "true.strict();\n"
          "strict.call('');\n"
          "''.strict();\n"
          "strict.call(42);\n"
          "(42).strict();\n"
          "strict.call(undefined);\n"
          "strict.call(null);\n");
     CHECK(!anyWrapped);
     return true;
 }
 END_TEST(testDebugger_getThisStrict)
 static bool calledThrowHook = false;
 static JSTrapStatus
 ThrowHook(JSContext *cx, JSScript *, jsbytecode *, jsval *rval, void *closure)
 {
     JS_ASSERT(!closure);
     calledThrowHook = true;
     JS::RootedObject global(cx, JS::CurrentGlobalOrNull(cx));
     char text[] = "new Error()";
     JS::RootedValue _(cx);
     JS_EvaluateScript(cx, global, text, strlen(text), "", 0, &_);
     return JSTRAP_CONTINUE;
 }
 BEGIN_TEST(testDebugger_throwHook)
 {
     CHECK(JS_SetDebugMode(cx, true));
     CHECK(JS_SetThrowHook(rt, ThrowHook, nullptr));
     EXEC("function foo() { throw 3 };\n"
          "for (var i = 0; i < 10; ++i) { \n"
          "  var x = {}\n"
          "  try {\n"
          "    foo(); \n"
          "  } catch(e) {}\n"
          "}\n");
     CHECK(calledThrowHook);
     CHECK(JS_SetThrowHook(rt, nullptr, nullptr));
     return true;
 }
 END_TEST(testDebugger_throwHook)
 BEGIN_TEST(testDebugger_debuggerObjectVsDebugMode)
 {
     CHECK(JS_DefineDebuggerObject(cx, global));
     JS::RootedObject debuggee(cx, JS_NewGlobalObject(cx, getGlobalClass(), nullptr, JS::FireOnNewGlobalHook));
     CHECK(debuggee);
     {
         JSAutoCompartment ae(cx, debuggee);
         CHECK(JS_SetDebugMode(cx, true));
         CHECK(JS_InitStandardClasses(cx, debuggee));
     }
     JS::RootedObject debuggeeWrapper(cx, debuggee);
     CHECK(JS_WrapObject(cx, &debuggeeWrapper));
     JS::RootedValue v(cx, JS::ObjectValue(*debuggeeWrapper));
     CHECK(JS_SetProperty(cx, global, "debuggee", v));
     EVAL("var dbg = new Debugger(debuggee);\n"
          "var hits = 0;\n"
          "dbg.onDebuggerStatement = function () { hits++; };\n"
          "debuggee.eval('debugger;');\n"
          "hits;\n",
          &v);
     CHECK_SAME(v, JSVAL_ONE);
     {
         JSAutoCompartment ae(cx, debuggee);
         CHECK(JS_SetDebugMode(cx, false));
     }
     EVAL("debuggee.eval('debugger; debugger; debugger;');\n"
          "hits;\n",
          &v);
     CHECK_SAME(v, INT_TO_JSVAL(4));
     return true;
 }
 END_TEST(testDebugger_debuggerObjectVsDebugMode)
 BEGIN_TEST(testDebugger_newScriptHook)
 {
     // Test that top-level indirect eval fires the newScript hook.
     CHECK(JS_DefineDebuggerObject(cx, global));
     JS::RootedObject g(cx, JS_NewGlobalObject(cx, getGlobalClass(), nullptr, JS::FireOnNewGlobalHook));
     CHECK(g);
     {
         JSAutoCompartment ae(cx, g);
         CHECK(JS_InitStandardClasses(cx, g));
     }
     JS::RootedObject gWrapper(cx, g);
     CHECK(JS_WrapObject(cx, &gWrapper));
     JS::RootedValue v(cx, JS::ObjectValue(*gWrapper));
     CHECK(JS_SetProperty(cx, global, "g", v));
     EXEC("var dbg = Debugger(g);\n"
          "var hits = 0;\n"
          "dbg.onNewScript = function (s) {\n"
          "    hits += Number(s instanceof Debugger.Script);\n"
          "};\n");
     // Since g is a debuggee, g.eval should trigger newScript, regardless of
     // what scope object we use to enter the compartment.
     //
     // Scripts are associated with the global where they're compiled, so we
     // deliver them only to debuggers that are watching that particular global.
     //
     return testIndirectEval(g, "Math.abs(0)");
 }
 bool testIndirectEval(JS::HandleObject scope, const char *code)
 {
     EXEC("hits = 0;");
     {
         JSAutoCompartment ae(cx, scope);
         JSString *codestr = JS_NewStringCopyZ(cx, code);
         CHECK(codestr);
         JS::RootedValue arg(cx, JS::StringValue(codestr));
         JS::RootedValue v(cx);
         CHECK(JS_CallFunctionName(cx, scope, "eval", arg, &v));
     }
     JS::RootedValue hitsv(cx);
     EVAL("hits", &hitsv);
     CHECK_SAME(hitsv, INT_TO_JSVAL(1));
     return true;
 }
 END_TEST(testDebugger_newScriptHook)
 BEGIN_TEST(testDebugger_singleStepThrow)
     {
         CHECK(JS_SetDebugModeForCompartment(cx, cx->compartment(), true));
         CHECK(JS_SetInterrupt(rt, onStep, nullptr));
         CHECK(JS_DefineFunction(cx, global, "setStepMode", setStepMode, 0, 0));
         EXEC("var e;\n"
              "setStepMode();\n"
              "function f() { throw 0; }\n"
              "try { f(); }\n"
              "catch (x) { e = x; }\n");
         return true;
     }
     static bool
     setStepMode(JSContext *cx, unsigned argc, jsval *vp)
     {
         CallArgs args = CallArgsFromVp(argc, vp);
         NonBuiltinScriptFrameIter iter(cx);
         JS::RootedScript script(cx, iter.script());
         if (!JS_SetSingleStepMode(cx, script, true))
             return false;
         args.rval().set(UndefinedValue());
         return true;
     }
     static JSTrapStatus
     onStep(JSContext *cx, JSScript *script, jsbytecode *pc, jsval *rval, void *closure)
     {
         return JSTRAP_CONTINUE;
     }
 END_TEST(testDebugger_singleStepThrow)

The Tor Browser / annotate

js/src/jsapi-tests/testDebugger.cpp@b8a032363ba2 (annotated)

js/src/jsapi-tests/testDebugger.cpp