// Copyright 2006-2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <stdlib.h>
#include <wchar.h> // wint_t
#include "v8.h"
#include "compiler.h"
#include "execution.h"
#include "factory.h"
#include "platform.h"
#include "top.h"
#include "cctest.h"
using namespace v8::internal;
static v8::Persistent<v8::Context> env;
// --- P r i n t E x t e n s i o n ---
class PrintExtension : public v8::Extension {
public:
PrintExtension() : v8::Extension("v8/print", kSource) { }
virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
v8::Handle<v8::String> name);
static v8::Handle<v8::Value> Print(const v8::Arguments& args);
private:
static const char* kSource;
};
const char* PrintExtension::kSource = "native function print();";
v8::Handle<v8::FunctionTemplate> PrintExtension::GetNativeFunction(
v8::Handle<v8::String> str) {
return v8::FunctionTemplate::New(PrintExtension::Print);
}
v8::Handle<v8::Value> PrintExtension::Print(const v8::Arguments& args) {
for (int i = 0; i < args.Length(); i++) {
if (i != 0) printf(" ");
v8::HandleScope scope;
v8::Handle<v8::Value> arg = args[i];
v8::Handle<v8::String> string_obj = arg->ToString();
if (string_obj.IsEmpty()) return string_obj;
int length = string_obj->Length();
uint16_t* string = NewArray<uint16_t>(length + 1);
string_obj->Write(string);
for (int j = 0; j < length; j++)
printf("%lc", static_cast<wint_t>(string[j]));
DeleteArray(string);
}
printf("\n");
return v8::Undefined();
}
static PrintExtension kPrintExtension;
v8::DeclareExtension kPrintExtensionDeclaration(&kPrintExtension);
static void InitializeVM() {
if (env.IsEmpty()) {
v8::HandleScope scope;
const char* extensions[] = { "v8/print", "v8/gc" };
v8::ExtensionConfiguration config(2, extensions);
env = v8::Context::New(&config);
}
v8::HandleScope scope;
env->Enter();
}
static Object* GetGlobalProperty(const char* name) {
Handle<String> symbol = Factory::LookupAsciiSymbol(name);
return Top::context()->global()->GetProperty(*symbol);
}
static void SetGlobalProperty(const char* name, Object* value) {
Handle<Object> object(value);
Handle<String> symbol = Factory::LookupAsciiSymbol(name);
Handle<JSObject> global(Top::context()->global());
SetProperty(global, symbol, object, NONE);
}
static Handle<JSFunction> Compile(const char* source) {
Handle<String> source_code(Factory::NewStringFromUtf8(CStrVector(source)));
Handle<JSFunction> boilerplate = Compiler::Compile(source_code,
Handle<String>(),
0,
0,
NULL,
NULL,
Handle<String>::null(),
NOT_NATIVES_CODE);
return Factory::NewFunctionFromBoilerplate(boilerplate,
Top::global_context());
}
static double Inc(int x) {
const char* source = "result = %d + 1;";
EmbeddedVector<char, 512> buffer;
OS::SNPrintF(buffer, source, x);
Handle<JSFunction> fun = Compile(buffer.start());
if (fun.is_null()) return -1;
bool has_pending_exception;
Handle<JSObject> global(Top::context()->global());
Execution::Call(fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
return GetGlobalProperty("result")->Number();
}
TEST(Inc) {
InitializeVM();
v8::HandleScope scope;
CHECK_EQ(4.0, Inc(3));
}
static double Add(int x, int y) {
Handle<JSFunction> fun = Compile("result = x + y;");
if (fun.is_null()) return -1;
SetGlobalProperty("x", Smi::FromInt(x));
SetGlobalProperty("y", Smi::FromInt(y));
bool has_pending_exception;
Handle<JSObject> global(Top::context()->global());
Execution::Call(fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
return GetGlobalProperty("result")->Number();
}
TEST(Add) {
InitializeVM();
v8::HandleScope scope;
CHECK_EQ(5.0, Add(2, 3));
}
static double Abs(int x) {
Handle<JSFunction> fun = Compile("if (x < 0) result = -x; else result = x;");
if (fun.is_null()) return -1;
SetGlobalProperty("x", Smi::FromInt(x));
bool has_pending_exception;
Handle<JSObject> global(Top::context()->global());
Execution::Call(fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
return GetGlobalProperty("result")->Number();
}
TEST(Abs) {
InitializeVM();
v8::HandleScope scope;
CHECK_EQ(3.0, Abs(-3));
}
static double Sum(int n) {
Handle<JSFunction> fun =
Compile("s = 0; while (n > 0) { s += n; n -= 1; }; result = s;");
if (fun.is_null()) return -1;
SetGlobalProperty("n", Smi::FromInt(n));
bool has_pending_exception;
Handle<JSObject> global(Top::context()->global());
Execution::Call(fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
return GetGlobalProperty("result")->Number();
}
TEST(Sum) {
InitializeVM();
v8::HandleScope scope;
CHECK_EQ(5050.0, Sum(100));
}
TEST(Print) {
InitializeVM();
v8::HandleScope scope;
const char* source = "for (n = 0; n < 100; ++n) print(n, 1, 2);";
Handle<JSFunction> fun = Compile(source);
if (fun.is_null()) return;
bool has_pending_exception;
Handle<JSObject> global(Top::context()->global());
Execution::Call(fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
}
// The following test method stems from my coding efforts today. It
// tests all the functionality I have added to the compiler today
TEST(Stuff) {
InitializeVM();
v8::HandleScope scope;
const char* source =
"r = 0;\n"
"a = new Object;\n"
"if (a == a) r+=1;\n" // 1
"if (a != new Object()) r+=2;\n" // 2
"a.x = 42;\n"
"if (a.x == 42) r+=4;\n" // 4
"function foo() { var x = 87; return x; }\n"
"if (foo() == 87) r+=8;\n" // 8
"function bar() { var x; x = 99; return x; }\n"
"if (bar() == 99) r+=16;\n" // 16
"function baz() { var x = 1, y, z = 2; y = 3; return x + y + z; }\n"
"if (baz() == 6) r+=32;\n" // 32
"function Cons0() { this.x = 42; this.y = 87; }\n"
"if (new Cons0().x == 42) r+=64;\n" // 64
"if (new Cons0().y == 87) r+=128;\n" // 128
"function Cons2(x, y) { this.sum = x + y; }\n"
"if (new Cons2(3,4).sum == 7) r+=256;"; // 256
Handle<JSFunction> fun = Compile(source);
CHECK(!fun.is_null());
bool has_pending_exception;
Handle<JSObject> global(Top::context()->global());
Execution::Call(fun, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
CHECK_EQ(511.0, GetGlobalProperty("r")->Number());
}
TEST(UncaughtThrow) {
InitializeVM();
v8::HandleScope scope;
const char* source = "throw 42;";
Handle<JSFunction> fun = Compile(source);
CHECK(!fun.is_null());
bool has_pending_exception;
Handle<JSObject> global(Top::context()->global());
Handle<Object> result =
Execution::Call(fun, global, 0, NULL, &has_pending_exception);
CHECK(has_pending_exception);
CHECK_EQ(42.0, Top::pending_exception()->Number());
}
// Tests calling a builtin function from C/C++ code, and the builtin function
// performs GC. It creates a stack frame looks like following:
// | C (PerformGC) |
// | JS-to-C |
// | JS |
// | C-to-JS |
TEST(C2JSFrames) {
InitializeVM();
v8::HandleScope scope;
const char* source = "function foo(a) { gc(), print(a); }";
Handle<JSFunction> fun0 = Compile(source);
CHECK(!fun0.is_null());
// Run the generated code to populate the global object with 'foo'.
bool has_pending_exception;
Handle<JSObject> global(Top::context()->global());
Execution::Call(fun0, global, 0, NULL, &has_pending_exception);
CHECK(!has_pending_exception);
Handle<Object> fun1 =
Handle<Object>(
Top::context()->global()->GetProperty(
*Factory::LookupAsciiSymbol("foo")));
CHECK(fun1->IsJSFunction());
Object** argv[1] = {
Handle<Object>::cast(Factory::LookupAsciiSymbol("hello")).location()
};
Execution::Call(Handle<JSFunction>::cast(fun1), global, 1, argv,
&has_pending_exception);
CHECK(!has_pending_exception);
}
// Regression 236. Calling InitLineEnds on a Script with undefined
// source resulted in crash.
TEST(Regression236) {
InitializeVM();
v8::HandleScope scope;
Handle<Script> script = Factory::NewScript(Factory::empty_string());
script->set_source(Heap::undefined_value());
CHECK_EQ(-1, GetScriptLineNumber(script, 0));
CHECK_EQ(-1, GetScriptLineNumber(script, 100));
CHECK_EQ(-1, GetScriptLineNumber(script, -1));
}
TEST(GetScriptLineNumber) {
LocalContext env;
v8::HandleScope scope;
v8::ScriptOrigin origin = v8::ScriptOrigin(v8::String::New("test"));
const char function_f[] = "function f() {}";
const int max_rows = 1000;
const int buffer_size = max_rows + sizeof(function_f);
ScopedVector<char> buffer(buffer_size);
memset(buffer.start(), '\n', buffer_size - 1);
buffer[buffer_size - 1] = '\0';
for (int i = 0; i < max_rows; ++i) {
if (i > 0)
buffer[i - 1] = '\n';
memcpy(&buffer[i], function_f, sizeof(function_f) - 1);
v8::Handle<v8::String> script_body = v8::String::New(buffer.start());
v8::Script::Compile(script_body, &origin)->Run();
v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
env->Global()->Get(v8::String::New("f")));
CHECK_EQ(i, f->GetScriptLineNumber());
}
}