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v8/test/unittests/interpreter/bytecode-generator-unittest.cc
Clemens Backes 0d04e8440e [interpreter] Use v8_flags for accessing flag values 
Avoid the deprecated FLAG_* syntax, access flag values via the
{v8_flags} struct instead.

R=jgruber@chromium.org

Bug: v8:12887
Change-Id: I0454426c664e54e9b8c8b39f903eeca1a80d4bc2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3898933
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Jakob Linke <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83214}
2022-09-15 12:06:07 +00:00

3210 lines
76 KiB
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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.
#include "src/interpreter/bytecode-generator.h"
#include <fstream>
#include "src/init/v8.h"
#include "src/interpreter/bytecode-array-iterator.h"
#include "src/interpreter/interpreter.h"
#include "src/objects/objects-inl.h"
#include "test/unittests/interpreter/bytecode-expectations-printer.h"
#include "test/unittests/test-utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace v8 {
namespace internal {
namespace interpreter {
class BytecodeGeneratorTest : public TestWithContext {
public:
BytecodeGeneratorTest() : printer_(isolate()) {}
static void SetUpTestSuite() {
i::v8_flags.always_turbofan = false;
i::v8_flags.allow_natives_syntax = true;
i::v8_flags.enable_lazy_source_positions = false;
TestWithContext::SetUpTestSuite();
}
BytecodeExpectationsPrinter& printer() { return printer_; }
private:
BytecodeExpectationsPrinter printer_;
};
int global_counter = 0; // For unique variable/property names.
std::string LoadUniqueProperties(int n) {
// Don't take any fancy recursive shortcuts here because
// {LoadUniqueProperty} must actually be called {n} times.
std::string result;
for (int i = 0; i < n; i++) {
result += " b.name" + std::to_string(global_counter++) + ";\n";
}
return result;
}
std::string UniqueVars(int n) {
std::string result;
for (int i = 0; i < n; i++) {
result += "var a" + std::to_string(global_counter++) + " = 0;\n";
}
return result;
}
std::string Repeat(std::string s, int n) {
if (n == 1) return s;
std::string half = Repeat(s, n >> 1);
std::string result = half + half;
if (n & 1) result += s;
return result;
}
static const char* kGoldenFileDirectory =
"test/unittests/interpreter/bytecode_expectations/";
void SkipGoldenFileHeader(std::istream* stream) {
std::string line;
int separators_seen = 0;
while (std::getline(*stream, line)) {
if (line == "---") separators_seen += 1;
if (separators_seen == 2) return;
}
}
std::string LoadGolden(const std::string& golden_filename) {
std::ifstream expected_file((kGoldenFileDirectory + golden_filename).c_str());
CHECK(expected_file.is_open());
SkipGoldenFileHeader(&expected_file);
std::ostringstream expected_stream;
// Restore the first separator, which was consumed by SkipGoldenFileHeader
expected_stream << "---\n" << expected_file.rdbuf();
return expected_stream.str();
}
template <size_t N>
std::string BuildActual(const BytecodeExpectationsPrinter& printer,
std::string (&snippet_list)[N],
const char* prologue = nullptr,
const char* epilogue = nullptr) {
std::ostringstream actual_stream;
for (std::string snippet : snippet_list) {
std::string source_code;
if (prologue) source_code += prologue;
source_code += snippet;
if (epilogue) source_code += epilogue;
printer.PrintExpectation(&actual_stream, source_code);
}
return actual_stream.str();
}
// inplace left trim
static inline void ltrim(std::string* str) {
str->erase(str->begin(),
std::find_if(str->begin(), str->end(),
[](unsigned char ch) { return !std::isspace(ch); }));
}
// inplace right trim
static inline void rtrim(std::string* str) {
str->erase(std::find_if(str->rbegin(), str->rend(),
[](unsigned char ch) { return !std::isspace(ch); })
.base(),
str->end());
}
static inline std::string trim(std::string* str) {
ltrim(str);
rtrim(str);
return *str;
}
bool CompareTexts(const std::string& generated, const std::string& expected) {
std::istringstream generated_stream(generated);
std::istringstream expected_stream(expected);
std::string generated_line;
std::string expected_line;
// Line number does not include golden file header.
int line_number = 0;
bool strings_match = true;
do {
std::getline(generated_stream, generated_line);
std::getline(expected_stream, expected_line);
if (!generated_stream.good() && !expected_stream.good()) {
return strings_match;
}
if (!generated_stream.good()) {
std::cerr << "Expected has extra lines after line " << line_number
<< "\n";
std::cerr << " Expected: '" << expected_line << "'\n";
return false;
} else if (!expected_stream.good()) {
std::cerr << "Generated has extra lines after line " << line_number
<< "\n";
std::cerr << " Generated: '" << generated_line << "'\n";
return false;
}
if (trim(&generated_line) != trim(&expected_line)) {
std::cerr << "Inputs differ at line " << line_number << "\n";
std::cerr << " Generated: '" << generated_line << "'\n";
std::cerr << " Expected: '" << expected_line << "'\n";
strings_match = false;
}
line_number++;
} while (true);
}
TEST_F(BytecodeGeneratorTest, PrimitiveReturnStatements) {
std::string snippets[] = {
"",
"return;\n",
"return null;\n",
"return true;\n",
"return false;\n",
"return 0;\n",
"return +1;\n",
"return -1;\n",
"return +127;\n",
"return -128;\n",
"return 2.0;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PrimitiveReturnStatements.golden")));
}
TEST_F(BytecodeGeneratorTest, PrimitiveExpressions) {
std::string snippets[] = {
"var x = 0; return x;\n",
"var x = 0; return x + 3;\n",
"var x = 0; return 3 + x;\n",
"var x = 0; return x - 3;\n",
"var x = 0; return 3 - x;\n",
"var x = 4; return x * 3;\n",
"var x = 4; return 3 * x;\n",
"var x = 4; return x / 3;\n",
"var x = 4; return 3 / x;\n",
"var x = 4; return x % 3;\n",
"var x = 4; return 3 % x;\n",
"var x = 1; return x | 2;\n",
"var x = 1; return 2 | x;\n",
"var x = 1; return x ^ 2;\n",
"var x = 1; return 2 ^ x;\n",
"var x = 1; return x & 2;\n",
"var x = 1; return 2 & x;\n",
"var x = 10; return x << 3;\n",
"var x = 10; return 3 << x;\n",
"var x = 10; return x >> 3;\n",
"var x = 10; return 3 >> x;\n",
"var x = 10; return x >>> 3;\n",
"var x = 10; return 3 >>> x;\n",
"var x = 0; return (x, 3);\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PrimitiveExpressions.golden")));
}
TEST_F(BytecodeGeneratorTest, LogicalExpressions) {
std::string snippets[] = {
"var x = 0; return x || 3;\n",
"var x = 0; return (x == 1) || 3;\n",
"var x = 0; return x && 3;\n",
"var x = 0; return (x == 0) && 3;\n",
"var x = 0; return x || (1, 2, 3);\n",
"var a = 2, b = 3, c = 4; return a || (a, b, a, b, c = 5, 3);\n",
// clang-format off
"var x = 1; var a = 2, b = 3; return x || (" +
Repeat("\n a = 1, b = 2, ", 32) +
"3);\n",
"var x = 0; var a = 2, b = 3; return x && (" +
Repeat("\n a = 1, b = 2, ", 32) +
"3);\n",
"var x = 1; var a = 2, b = 3; return (x > 3) || (" +
Repeat("\n a = 1, b = 2, ", 32) +
"3);\n",
"var x = 0; var a = 2, b = 3; return (x < 5) && (" +
Repeat("\n a = 1, b = 2, ", 32) +
"3);\n",
// clang-format on
"return 0 && 3;\n",
"return 1 || 3;\n",
"var x = 1; return x && 3 || 0, 1;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("LogicalExpressions.golden")));
}
TEST_F(BytecodeGeneratorTest, Parameters) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function f() { return this; }",
"function f(arg1) { return arg1; }",
"function f(arg1) { return this; }",
"function f(arg1, arg2, arg3, arg4, arg5, arg6, arg7) { return arg4; }",
"function f(arg1, arg2, arg3, arg4, arg5, arg6, arg7) { return this; }",
"function f(arg1) { arg1 = 1; }",
"function f(arg1, arg2, arg3, arg4) { arg2 = 1; }",
};
CHECK(CompareTexts(BuildActual(printer(), snippets, "", "\nf();"),
LoadGolden("Parameters.golden")));
}
TEST_F(BytecodeGeneratorTest, IntegerConstants) {
std::string snippets[] = {
"return 12345678;\n",
"var a = 1234; return 5678;\n",
"var a = 1234; return 1234;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("IntegerConstants.golden")));
}
TEST_F(BytecodeGeneratorTest, HeapNumberConstants) {
std::string snippets[] = {
"return 1.2;\n",
"var a = 1.2; return 2.6;\n",
"var a = 3.14; return 3.14;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("HeapNumberConstants.golden")));
}
TEST_F(BytecodeGeneratorTest, StringConstants) {
std::string snippets[] = {
"return \"This is a string\";\n",
"var a = \"First string\"; return \"Second string\";\n",
"var a = \"Same string\"; return \"Same string\";\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("StringConstants.golden")));
}
TEST_F(BytecodeGeneratorTest, PropertyLoads) {
printer().set_wrap(false);
printer().set_test_function_name("f");
// clang-format off
std::string snippets[] = {
"function f(a) { return a.name; }\n"
"f({name : \"test\"});\n",
"function f(a) { return a[\"key\"]; }\n"
"f({key : \"test\"});\n",
"function f(a) { return a[100]; }\n"
"f({100 : \"test\"});\n",
"function f(a, b) { return a[b]; }\n"
"f({arg : \"test\"}, \"arg\");\n",
"function f(a) { var b = a.name; return a[-124]; }\n"
"f({\"-124\" : \"test\", name : 123 })",
"function f(a) {\n"
" var b = {};\n" +
LoadUniqueProperties(128) +
" return a.name;\n"
"}\n"
"f({name : \"test\"})\n",
"function f(a, b) {\n"
" var c;\n"
" c = a[b];\n" +
Repeat(" c = a[b];\n", 127) +
" return a[b];\n"
"}\n"
"f({name : \"test\"}, \"name\")\n",
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PropertyLoads.golden")));
}
TEST_F(BytecodeGeneratorTest, PropertyLoadStore) {
printer().set_wrap(false);
printer().set_top_level(true);
std::string snippets[] = {
R"(
l = {
'aa': 1.1,
'bb': 2.2
};
v = l['aa'] + l['bb'];
l['bb'] = 7;
l['aa'] = l['bb'];
)",
R"(
l = {
'cc': 3.1,
'dd': 4.2
};
if (l['cc'] < 3) {
l['cc'] = 3;
} else {
l['dd'] = 3;
}
)",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PropertyLoadStore.golden")));
}
TEST_F(BytecodeGeneratorTest, IIFE) {
printer().set_wrap(false);
printer().set_top_level(true);
printer().set_print_callee(true);
std::string snippets[] = {
R"(
(function() {
l = {};
l.a = 2;
l.b = l.a;
return arguments.callee;
})();
)",
R"(
(function() {
l = {
'a': 4.3,
'b': 3.4
};
if (l.a < 3) {
l.a = 3;
} else {
l.a = l.b;
}
return arguments.callee;
})();
)",
R"(
this.f0 = function() {};
this.f1 = function(a) {};
this.f2 = function(a, b) {};
this.f3 = function(a, b, c) {};
this.f4 = function(a, b, c, d) {};
this.f5 = function(a, b, c, d, e) {};
(function() {
this.f0();
this.f1(1);
this.f2(1, 2);
this.f3(1, 2, 3);
this.f4(1, 2, 3, 4);
this.f5(1, 2, 3, 4, 5);
return arguments.callee;
})();
)",
R"(
function f0() {}
function f1(a) {}
function f2(a, b) {}
function f3(a, b, c) {}
function f4(a, b, c, d) {}
function f5(a, b, c, d, e) {}
(function() {
f0();
f1(1);
f2(1, 2);
f3(1, 2, 3);
f4(1, 2, 3, 4);
f5(1, 2, 3, 4, 5);
return arguments.callee;
})();
)",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("IIFE.golden")));
}
TEST_F(BytecodeGeneratorTest, PropertyStores) {
printer().set_wrap(false);
printer().set_test_function_name("f");
// For historical reasons, this test expects the first unique identifier
// to be 128.
global_counter = 128;
// clang-format off
std::string snippets[] = {
"function f(a) { a.name = \"val\"; }\n"
"f({name : \"test\"})",
"function f(a) { a[\"key\"] = \"val\"; }\n"
"f({key : \"test\"})",
"function f(a) { a[100] = \"val\"; }\n"
"f({100 : \"test\"})",
"function f(a, b) { a[b] = \"val\"; }\n"
"f({arg : \"test\"}, \"arg\")",
"function f(a) { a.name = a[-124]; }\n"
"f({\"-124\" : \"test\", name : 123 })",
"function f(a) { \"use strict\"; a.name = \"val\"; }\n"
"f({name : \"test\"})",
"function f(a, b) { \"use strict\"; a[b] = \"val\"; }\n"
"f({arg : \"test\"}, \"arg\")",
"function f(a) {\n"
" a.name = 1;\n"
" var b = {};\n" +
LoadUniqueProperties(128) +
" a.name = 2;\n"
"}\n"
"f({name : \"test\"})\n",
"function f(a) {\n"
" 'use strict';\n"
" a.name = 1;\n"
" var b = {};\n" +
LoadUniqueProperties(128) +
" a.name = 2;\n"
"}\n"
"f({name : \"test\"})\n",
"function f(a, b) {\n"
" a[b] = 1;\n" +
Repeat(" a[b] = 1;\n", 127) +
" a[b] = 2;\n"
"}\n"
"f({name : \"test\"})\n",
"function f(a, b) {\n"
" 'use strict';\n"
" a[b] = 1;\n" +
Repeat(" a[b] = 1;\n", 127) +
" a[b] = 2;\n"
"}\n"
"f({name : \"test\"})\n",
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PropertyStores.golden")));
}
#define FUNC_ARG "new (function Obj() { this.func = function() { return; }})()"
TEST_F(BytecodeGeneratorTest, PropertyCall) {
printer().set_wrap(false);
printer().set_test_function_name("f");
// For historical reasons, this test expects the first unique identifier
// to be 384.
global_counter = 384;
// clang-format off
std::string snippets[] = {
"function f(a) { return a.func(); }\n"
"f(" FUNC_ARG ")",
"function f(a, b, c) { return a.func(b, c); }\n"
"f(" FUNC_ARG ", 1, 2)",
"function f(a, b) { return a.func(b + b, b); }\n"
"f(" FUNC_ARG ", 1)",
"function f(a) {\n"
" var b = {};\n" +
LoadUniqueProperties(128) +
" a.func;\n"
" return a.func(); }\n"
"f(" FUNC_ARG ")",
"function f(a) { return a.func(1).func(2).func(3); }\n"
"f(new (function Obj() { this.func = function(a) { return this; }})())",
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PropertyCall.golden")));
}
TEST_F(BytecodeGeneratorTest, LoadGlobal) {
printer().set_wrap(false);
printer().set_test_function_name("f");
// For historical reasons, this test expects the first unique identifier
// to be 512.
global_counter = 512;
// clang-format off
std::string snippets[] = {
"var a = 1;\n"
"function f() { return a; }\n"
"f()",
"function t() { }\n"
"function f() { return t; }\n"
"f()",
"a = 1;\n"
"function f() { return a; }\n"
"f()",
"a = 1;\n"
"function f(c) {\n"
" var b = {};\n" +
LoadUniqueProperties(128) +
" return a;\n"
"}\n"
"f({name: 1});\n",
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("LoadGlobal.golden")));
}
TEST_F(BytecodeGeneratorTest, StoreGlobal) {
printer().set_wrap(false);
printer().set_test_function_name("f");
// For historical reasons, this test expects the first unique identifier
// to be 640.
global_counter = 640;
// clang-format off
std::string snippets[] = {
"var a = 1;\n"
"function f() { a = 2; }\n"
"f();\n",
"var a = \"test\"; function f(b) { a = b; }\n"
"f(\"global\");\n",
"'use strict'; var a = 1;\n"
"function f() { a = 2; }\n"
"f();\n",
"a = 1;\n"
"function f() { a = 2; }\n"
"f();\n",
"a = 1;\n"
"function f(c) {\n"
" var b = {};\n" +
LoadUniqueProperties(128) +
" a = 2;\n"
"}\n"
"f({name: 1});\n",
"a = 1;\n"
"function f(c) {\n"
" 'use strict';\n"
" var b = {};\n" +
LoadUniqueProperties(128) +
" a = 2;\n"
"}\n"
"f({name: 1});\n",
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("StoreGlobal.golden")));
}
TEST_F(BytecodeGeneratorTest, CallGlobal) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function t() { }\n"
"function f() { return t(); }\n"
"f();\n",
"function t(a, b, c) { }\n"
"function f() { return t(1, 2, 3); }\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CallGlobal.golden")));
}
TEST_F(BytecodeGeneratorTest, CallRuntime) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function f() { %TheHole() }\n"
"f();\n",
"function f(a) { return %IsArray(a) }\n"
"f(undefined);\n",
"function f() { return %Add(1, 2) }\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CallRuntime.golden")));
}
TEST_F(BytecodeGeneratorTest, IfConditions) {
printer().set_wrap(false);
printer().set_test_function_name("f");
// clang-format off
std::string snippets[] = {
"function f() {\n"
" if (0) {\n"
" return 1;\n"
" } else {\n"
" return -1;\n"
" }\n"
"};\n"
"f();\n",
"function f() {\n"
" if ('lucky') {\n"
" return 1;\n"
" } else {\n"
" return -1;\n"
" }\n"
"};\n"
"f();\n",
"function f() {\n"
" if (false) {\n"
" return 1;\n"
" } else {\n"
" return -1;\n"
" }\n"
"};\n"
"f();\n",
"function f() {\n"
" if (false) {\n"
" return 1;\n"
" }\n"
"};\n"
"f();\n",
"function f() {\n"
" var a = 1;\n"
" if (a) {\n"
" a += 1;\n"
" } else {\n"
" return 2;\n"
" }\n"
"};\n"
"f();\n",
"function f(a) {\n"
" if (a <= 0) {\n"
" return 200;\n"
" } else {\n"
" return -200;\n"
" }\n"
"};\n"
"f(99);\n",
"function f(a, b) { if (a in b) { return 200; } }"
"f('prop', { prop: 'yes'});\n",
"function f(z) { var a = 0; var b = 0; if (a === 0.01) {\n" +
Repeat(" b = a; a = b;\n", 64) +
" return 200; } else { return -200; } } f(0.001);\n",
"function f() {\n"
" var a = 0; var b = 0;\n"
" if (a) {\n" +
Repeat(" b = a; a = b;\n", 64) +
" return 200; } else { return -200; }\n"
"};\n"
"f();\n",
"function f(a, b) {\n"
" if (a == b) { return 1; }\n"
" if (a === b) { return 1; }\n"
" if (a < b) { return 1; }\n"
" if (a > b) { return 1; }\n"
" if (a <= b) { return 1; }\n"
" if (a >= b) { return 1; }\n"
" if (a in b) { return 1; }\n"
" if (a instanceof b) { return 1; }\n"
" return 0;\n"
"}\n"
"f(1, 1);\n",
"function f() {\n"
" var a = 0;\n"
" if (a) {\n"
" return 20;\n"
" } else {\n"
" return -20;\n"
" }\n"
"};\n"
"f();\n",
"function f(a, b) {\n"
" if (a == b || a < 0) {\n"
" return 1;\n"
" } else if (a > 0 && b > 0) {\n"
" return 0;\n"
" } else {\n"
" return -1;\n"
" }\n"
"};\n"
"f(-1, 1);\n",
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("IfConditions.golden")));
}
TEST_F(BytecodeGeneratorTest, DeclareGlobals) {
printer().set_wrap(false);
printer().set_test_function_name("f");
printer().set_top_level(true);
std::string snippets[] = {
"var a = 1;\n",
"function f() {}\n",
"var a = 1;\n"
"a=2;\n",
"function f() {}\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("DeclareGlobals.golden")));
}
TEST_F(BytecodeGeneratorTest, BreakableBlocks) {
std::string snippets[] = {
"var x = 0;\n"
"label: {\n"
" x = x + 1;\n"
" break label;\n"
" x = x + 1;\n"
"}\n"
"return x;\n",
"var sum = 0;\n"
"outer: {\n"
" for (var x = 0; x < 10; ++x) {\n"
" for (var y = 0; y < 3; ++y) {\n"
" ++sum;\n"
" if (x + y == 12) { break outer; }\n"
" }\n"
" }\n"
"}\n"
"return sum;\n",
"outer: {\n"
" let y = 10;\n"
" function f() { return y; }\n"
" break outer;\n"
"}\n",
"let x = 1;\n"
"outer: {\n"
" inner: {\n"
" let y = 2;\n"
" function f() { return x + y; }\n"
" if (y) break outer;\n"
" y = 3;\n"
" }\n"
"}\n"
"x = 4;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("BreakableBlocks.golden")));
}
TEST_F(BytecodeGeneratorTest, BasicLoops) {
std::string snippets[] = {
"var x = 0;\n"
"while (false) { x = 99; break; continue; }\n"
"return x;\n",
"var x = 0;\n"
"while (false) {\n"
" x = x + 1;\n"
"};\n"
"return x;\n",
"var x = 0;\n"
"var y = 1;\n"
"while (x < 10) {\n"
" y = y * 12;\n"
" x = x + 1;\n"
" if (x == 3) continue;\n"
" if (x == 4) break;\n"
"}\n"
"return y;\n",
"var i = 0;\n"
"while (true) {\n"
" if (i < 0) continue;\n"
" if (i == 3) break;\n"
" if (i == 4) break;\n"
" if (i == 10) continue;\n"
" if (i == 5) break;\n"
" i = i + 1;\n"
"}\n"
"return i;\n",
"var i = 0;\n"
"while (true) {\n"
" while (i < 3) {\n"
" if (i == 2) break;\n"
" i = i + 1;\n"
" }\n"
" i = i + 1;\n"
" break;\n"
"}\n"
"return i;\n",
"var x = 10;\n"
"var y = 1;\n"
"while (x) {\n"
" y = y * 12;\n"
" x = x - 1;\n"
"}\n"
"return y;\n",
"var x = 0; var y = 1;\n"
"do {\n"
" y = y * 10;\n"
" if (x == 5) break;\n"
" if (x == 6) continue;\n"
" x = x + 1;\n"
"} while (x < 10);\n"
"return y;\n",
"var x = 10;\n"
"var y = 1;\n"
"do {\n"
" y = y * 12;\n"
" x = x - 1;\n"
"} while (x);\n"
"return y;\n",
"var x = 0; var y = 1;\n"
"do {\n"
" y = y * 10;\n"
" if (x == 5) break;\n"
" x = x + 1;\n"
" if (x == 6) continue;\n"
"} while (false);\n"
"return y;\n",
"var x = 0; var y = 1;\n"
"do {\n"
" y = y * 10;\n"
" if (x == 5) break;\n"
" x = x + 1;\n"
" if (x == 6) continue;\n"
"} while (true);\n"
"return y;\n",
"var x = 0;\n"
"for (;;) {\n"
" if (x == 1) break;\n"
" if (x == 2) continue;\n"
" x = x + 1;\n"
"}\n",
"for (var x = 0;;) {\n"
" if (x == 1) break;\n"
" if (x == 2) continue;\n"
" x = x + 1;\n"
"}\n",
"var x = 0;\n"
"for (;; x = x + 1) {\n"
" if (x == 1) break;\n"
" if (x == 2) continue;\n"
"}\n",
"for (var x = 0;; x = x + 1) {\n"
" if (x == 1) break;\n"
" if (x == 2) continue;\n"
"}\n",
"var u = 0;\n"
"for (var i = 0; i < 100; i = i + 1) {\n"
" u = u + 1;\n"
" continue;\n"
"}\n",
"var y = 1;\n"
"for (var x = 10; x; --x) {\n"
" y = y * 12;\n"
"}\n"
"return y;\n",
"var x = 0;\n"
"for (var i = 0; false; i++) {\n"
" x = x + 1;\n"
"};\n"
"return x;\n",
"var x = 0;\n"
"for (var i = 0; true; ++i) {\n"
" x = x + 1;\n"
" if (x == 20) break;\n"
"};\n"
"return x;\n",
"var a = 0;\n"
"while (a) {\n"
" { \n"
" let z = 1;\n"
" function f() { z = 2; }\n"
" if (z) continue;\n"
" z++;\n"
" }\n"
"}\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("BasicLoops.golden")));
}
TEST_F(BytecodeGeneratorTest, UnaryOperators) {
std::string snippets[] = {
"var x = 0;\n"
"while (x != 10) {\n"
" x = x + 10;\n"
"}\n"
"return x;\n",
"var x = false;\n"
"do {\n"
" x = !x;\n"
"} while(x == false);\n"
"return x;\n",
"var x = 101;\n"
"return void(x * 3);\n",
"var x = 1234;\n"
"var y = void (x * x - 1);\n"
"return y;\n",
"var x = 13;\n"
"return ~x;\n",
"var x = 13;\n"
"return +x;\n",
"var x = 13;\n"
"return -x;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("UnaryOperators.golden")));
}
TEST_F(BytecodeGeneratorTest, Typeof) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function f() {\n"
" var x = 13;\n"
" return typeof(x);\n"
"};",
"var x = 13;\n"
"function f() {\n"
" return typeof(x);\n"
"};",
};
CHECK(CompareTexts(BuildActual(printer(), snippets, "", "\nf();"),
LoadGolden("Typeof.golden")));
}
TEST_F(BytecodeGeneratorTest, CompareTypeOf) {
std::string snippets[] = {
"return typeof(1) === 'number';\n",
"return 'string' === typeof('foo');\n",
"return typeof(true) == 'boolean';\n",
"return 'string' === typeof(undefined);\n",
"return 'unknown' === typeof(undefined);\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CompareTypeOf.golden")));
}
TEST_F(BytecodeGeneratorTest, CompareBoolean) {
std::string snippets[] = {
"var a = 1;\n"
"return a === true;\n",
"var a = true;\n"
"return true === a;\n",
"var a = false;\n"
"return true !== a;\n",
"var a = 1;\n"
"return true === a ? 1 : 2;\n",
"var a = true;\n"
"return false === a ? 1 : 2;\n",
"var a = 1;\n"
"return true !== a ? 1 : 2;\n",
"var a = false;\n"
"return false !== null ? 1 : 2;\n",
"var a = 0;\n"
"if (a !== true) {\n"
" return 1;\n"
"}\n",
"var a = true;\n"
"var b = 0;\n"
"while (a !== true) {\n"
" b++;\n"
"}\n",
"(0 === true) ? 1 : 2;\n",
"(0 !== true) ? 1 : 2;\n",
"(false === 0) ? 1 : 2;\n",
"(0 === true || 0 === false) ? 1 : 2;\n",
"if (0 === true || 0 === false) return 1;\n",
"if (!('false' === false)) return 1;\n",
"if (!('false' !== false)) return 1;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CompareBoolean.golden")));
}
TEST_F(BytecodeGeneratorTest, CompareNil) {
std::string snippets[] = {
"var a = 1;\n"
"return a === null;\n",
"var a = undefined;\n"
"return undefined === a;\n",
"var a = undefined;\n"
"return undefined !== a;\n",
"var a = 2;\n"
"return a != null;\n",
"var a = undefined;\n"
"return undefined == a;\n",
"var a = undefined;\n"
"return undefined === a ? 1 : 2;\n",
"var a = 0;\n"
"return null == a ? 1 : 2;\n",
"var a = 0;\n"
"return undefined !== a ? 1 : 2;\n",
"var a = 0;\n"
"return a === null ? 1 : 2;\n",
"var a = 0;\n"
"if (a === null) {\n"
" return 1;\n"
"} else {\n"
" return 2;\n"
"}\n",
"var a = 0;\n"
"if (a != undefined) {\n"
" return 1;\n"
"}\n",
"var a = undefined;\n"
"var b = 0;\n"
"while (a !== undefined) {\n"
" b++;\n"
"}\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CompareNil.golden")));
}
TEST_F(BytecodeGeneratorTest, Delete) {
std::string snippets[] = {
"var a = {x:13, y:14}; return delete a.x;\n",
"'use strict'; var a = {x:13, y:14}; return delete a.x;\n",
"var a = {1:13, 2:14}; return delete a[2];\n",
"var a = 10; return delete a;\n",
"'use strict';\n"
"var a = {1:10};\n"
"(function f1() {return a;});\n"
"return delete a[1];\n",
"return delete 'test';\n",
"return delete this;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("Delete.golden")));
}
TEST_F(BytecodeGeneratorTest, GlobalDelete) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"var a = {x:13, y:14};\n"
"function f() {\n"
" return delete a.x;\n"
"};\n"
"f();\n",
"a = {1:13, 2:14};\n"
"function f() {\n"
" 'use strict';\n"
" return delete a[1];\n"
"};\n"
"f();\n",
"var a = {x:13, y:14};\n"
"function f() {\n"
" return delete a;\n"
"};\n"
"f();\n",
"b = 30;\n"
"function f() {\n"
" return delete b;\n"
"};\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("GlobalDelete.golden")));
}
TEST_F(BytecodeGeneratorTest, FunctionLiterals) {
std::string snippets[] = {
"return function(){ }\n",
"return (function(){ })()\n",
"return (function(x){ return x; })(1)\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("FunctionLiterals.golden")));
}
TEST_F(BytecodeGeneratorTest, RegExpLiterals) {
std::string snippets[] = {
"return /ab+d/;\n",
"return /(\\w+)\\s(\\w+)/i;\n",
"return /ab+d/.exec('abdd');\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("RegExpLiterals.golden")));
}
TEST_F(BytecodeGeneratorTest, ArrayLiterals) {
std::string snippets[] = {
"return [ 1, 2 ];\n",
"var a = 1; return [ a, a + 1 ];\n",
"return [ [ 1, 2 ], [ 3 ] ];\n",
"var a = 1; return [ [ a, 2 ], [ a + 2 ] ];\n",
"var a = [ 1, 2 ]; return [ ...a ];\n",
"var a = [ 1, 2 ]; return [ 0, ...a ];\n",
"var a = [ 1, 2 ]; return [ ...a, 3 ];\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ArrayLiterals.golden")));
}
TEST_F(BytecodeGeneratorTest, ObjectLiterals) {
std::string snippets[] = {
"return { };\n",
"return { name: 'string', val: 9.2 };\n",
"var a = 1; return { name: 'string', val: a };\n",
"var a = 1; return { val: a, val: a + 1 };\n",
"return { func: function() { } };\n",
"return { func(a) { return a; } };\n",
"return { get a() { return 2; } };\n",
"return { get a() { return this.x; }, set a(val) { this.x = val } };\n",
"return { set b(val) { this.y = val } };\n",
"var a = 1; return { 1: a };\n",
"return { __proto__: null };\n",
"var a = 'test'; return { [a]: 1 };\n",
"var a = 'test'; return { val: a, [a]: 1 };\n",
"var a = 'test'; return { [a]: 1, __proto__: {} };\n",
"var n = 'name'; return { [n]: 'val', get a() { }, set a(b) {} };\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ObjectLiterals.golden")));
}
TEST_F(BytecodeGeneratorTest, TopLevelObjectLiterals) {
printer().set_wrap(false);
printer().set_test_function_name("f");
printer().set_top_level(true);
std::string snippets[] = {
"var a = { func: function() { } };\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("TopLevelObjectLiterals.golden")));
}
TEST_F(BytecodeGeneratorTest, TryCatch) {
std::string snippets[] = {
"try { return 1; } catch(e) { return 2; }\n",
"var a;\n"
"try { a = 1 } catch(e1) {};\n"
"try { a = 2 } catch(e2) { a = 3 }\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("TryCatch.golden")));
}
TEST_F(BytecodeGeneratorTest, TryFinally) {
std::string snippets[] = {
"var a = 1;\n"
"try { a = 2; } finally { a = 3; }\n",
"var a = 1;\n"
"try { a = 2; } catch(e) { a = 20 } finally { a = 3; }\n",
"var a; try {\n"
" try { a = 1 } catch(e) { a = 2 }\n"
"} catch(e) { a = 20 } finally { a = 3; }\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("TryFinally.golden")));
}
TEST_F(BytecodeGeneratorTest, Throw) {
std::string snippets[] = {
"throw 1;\n",
"throw 'Error';\n",
"var a = 1; if (a) { throw 'Error'; };\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("Throw.golden")));
}
TEST_F(BytecodeGeneratorTest, CallNew) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function bar() { this.value = 0; }\n"
"function f() { return new bar(); }\n"
"f();\n",
"function bar(x) { this.value = 18; this.x = x;}\n"
"function f() { return new bar(3); }\n"
"f();\n",
"function bar(w, x, y, z) {\n"
" this.value = 18;\n"
" this.x = x;\n"
" this.y = y;\n"
" this.z = z;\n"
"}\n"
"function f() { return new bar(3, 4, 5); }\n"
"f();\n",
"function f() { new class {}; }\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CallNew.golden")));
}
TEST_F(BytecodeGeneratorTest, ContextVariables) {
// The wide check below relies on MIN_CONTEXT_SLOTS + 3 + 250 == 256, if this
// ever changes, the REPEAT_XXX should be changed to output the correct number
// of unique variables to trigger the wide slot load / store.
static_assert(Context::MIN_CONTEXT_EXTENDED_SLOTS + 3 + 250 == 256);
// For historical reasons, this test expects the first unique identifier
// to be 896.
global_counter = 896;
// clang-format off
std::string snippets[] = {
"var a; return function() { a = 1; };\n",
"var a = 1; return function() { a = 2; };\n",
"var a = 1; var b = 2; return function() { a = 2; b = 3 };\n",
"var a; (function() { a = 2; })(); return a;\n",
"'use strict';\n"
"let a = 1;\n"
"{ let b = 2; return function() { a + b; }; }\n",
"'use strict';\n" +
UniqueVars(252) +
"eval();\n"
"var b = 100;\n"
"return b\n",
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ContextVariables.golden")));
}
TEST_F(BytecodeGeneratorTest, ContextParameters) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function f(arg1) { return function() { arg1 = 2; }; }",
"function f(arg1) { var a = function() { arg1 = 2; }; return arg1; }",
"function f(a1, a2, a3, a4) { return function() { a1 = a3; }; }",
"function f() { var self = this; return function() { self = 2; }; }",
};
CHECK(CompareTexts(BuildActual(printer(), snippets, "", "\nf();"),
LoadGolden("ContextParameters.golden")));
}
TEST_F(BytecodeGeneratorTest, OuterContextVariables) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function Outer() {\n"
" var outerVar = 1;\n"
" function Inner(innerArg) {\n"
" this.innerFunc = function() { return outerVar * innerArg; }\n"
" }\n"
" this.getInnerFunc = function() { return new Inner(1).innerFunc; }\n"
"}\n"
"var f = new Outer().getInnerFunc();",
"function Outer() {\n"
" var outerVar = 1;\n"
" function Inner(innerArg) {\n"
" this.innerFunc = function() { outerVar = innerArg; }\n"
" }\n"
" this.getInnerFunc = function() { return new Inner(1).innerFunc; }\n"
"}\n"
"var f = new Outer().getInnerFunc();",
};
CHECK(CompareTexts(BuildActual(printer(), snippets, "", "\nf();"),
LoadGolden("OuterContextVariables.golden")));
}
TEST_F(BytecodeGeneratorTest, CountOperators) {
std::string snippets[] = {
"var a = 1; return ++a;\n",
"var a = 1; return a++;\n",
"var a = 1; return --a;\n",
"var a = 1; return a--;\n",
"var a = { val: 1 }; return a.val++;\n",
"var a = { val: 1 }; return --a.val;\n",
"var name = 'var'; var a = { val: 1 }; return a[name]--;\n",
"var name = 'var'; var a = { val: 1 }; return ++a[name];\n",
"var a = 1; var b = function() { return a }; return ++a;\n",
"var a = 1; var b = function() { return a }; return a--;\n",
"var idx = 1; var a = [1, 2]; return a[idx++] = 2;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CountOperators.golden")));
}
TEST_F(BytecodeGeneratorTest, GlobalCountOperators) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"var global = 1;\n"
"function f() { return ++global; }\n"
"f();\n",
"var global = 1;\n"
"function f() { return global--; }\n"
"f();\n",
"unallocated = 1;\n"
"function f() { 'use strict'; return --unallocated; }\n"
"f();\n",
"unallocated = 1;\n"
"function f() { return unallocated++; }\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("GlobalCountOperators.golden")));
}
TEST_F(BytecodeGeneratorTest, CompoundExpressions) {
std::string snippets[] = {
"var a = 1; a += 2;\n",
"var a = 1; a /= 2;\n",
"var a = { val: 2 }; a.name *= 2;\n",
"var a = { 1: 2 }; a[1] ^= 2;\n",
"var a = 1; (function f() { return a; }); a |= 24;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CompoundExpressions.golden")));
}
TEST_F(BytecodeGeneratorTest, GlobalCompoundExpressions) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"var global = 1;\n"
"function f() { return global &= 1; }\n"
"f();\n",
"unallocated = 1;\n"
"function f() { return unallocated += 1; }\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("GlobalCompoundExpressions.golden")));
}
TEST_F(BytecodeGeneratorTest, CreateArguments) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function f() { return arguments; }",
"function f() { return arguments[0]; }",
"function f() { 'use strict'; return arguments; }",
"function f(a) { return arguments[0]; }",
"function f(a, b, c) { return arguments; }",
"function f(a, b, c) { 'use strict'; return arguments; }",
};
CHECK(CompareTexts(BuildActual(printer(), snippets, "", "\nf();"),
LoadGolden("CreateArguments.golden")));
}
TEST_F(BytecodeGeneratorTest, CreateRestParameter) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function f(...restArgs) { return restArgs; }",
"function f(a, ...restArgs) { return restArgs; }",
"function f(a, ...restArgs) { return restArgs[0]; }",
"function f(a, ...restArgs) { return restArgs[0] + arguments[0]; }",
};
CHECK(CompareTexts(BuildActual(printer(), snippets, "", "\nf();"),
LoadGolden("CreateRestParameter.golden")));
}
TEST_F(BytecodeGeneratorTest, ForIn) {
std::string snippets[] = {
"for (var p in null) {}\n",
"for (var p in undefined) {}\n",
"for (var p in undefined) {}\n",
"var x = 'potatoes';\n"
"for (var p in x) { return p; }\n",
"var x = 0;\n"
"for (var p in [1,2,3]) { x += p; }\n",
"var x = { 'a': 1, 'b': 2 };\n"
"for (x['a'] in [10, 20, 30]) {\n"
" if (x['a'] == 10) continue;\n"
" if (x['a'] == 20) break;\n"
"}\n",
"var x = [ 10, 11, 12 ] ;\n"
"for (x[0] in [1,2,3]) { return x[3]; }\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ForIn.golden")));
}
TEST_F(BytecodeGeneratorTest, ForOf) {
std::string snippets[] = {
"for (var p of [0, 1, 2]) {}\n",
"var x = 'potatoes';\n"
"for (var p of x) { return p; }\n",
"for (var x of [10, 20, 30]) {\n"
" if (x == 10) continue;\n"
" if (x == 20) break;\n"
"}\n",
"var x = { 'a': 1, 'b': 2 };\n"
"for (x['a'] of [1,2,3]) { return x['a']; }\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ForOf.golden")));
}
TEST_F(BytecodeGeneratorTest, Conditional) {
std::string snippets[] = {
"return 1 ? 2 : 3;\n",
"return 1 ? 2 ? 3 : 4 : 5;\n",
"return 0 < 1 ? 2 : 3;\n",
"var x = 0;\n"
"return x ? 2 : 3;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("Conditional.golden")));
}
TEST_F(BytecodeGeneratorTest, Switch) {
// clang-format off
std::string snippets[] = {
"var a = 1;\n"
"switch(a) {\n"
" case 1: return 2;\n"
" case 2: return 3;\n"
"}\n",
"var a = 1;\n"
"switch(a) {\n"
" case 1: a = 2; break;\n"
" case 2: a = 3; break;\n"
"}\n",
"var a = 1;\n"
"switch(a) {\n"
" case 1: a = 2; // fall-through\n"
" case 2: a = 3; break;\n"
"}\n",
"var a = 1;\n"
"switch(a) {\n"
" case 2: break;\n"
" case 3: break;\n"
" default: a = 1; break;\n"
"}\n",
"var a = 1;\n"
"switch(typeof(a)) {\n"
" case 2: a = 1; break;\n"
" case 3: a = 2; break;\n"
" default: a = 3; break;\n"
"}\n",
"var a = 1;\n"
"switch(a) {\n"
" case typeof(a): a = 1; break;\n"
" default: a = 2; break;\n"
"}\n",
"var a = 1;\n"
"switch(a) {\n"
" case 1:\n" +
Repeat(" a = 2;\n", 64) +
" break;\n"
" case 2:\n"
" a = 3;\n"
" break;\n"
"}\n",
"var a = 1;\n"
"switch(a) {\n"
" case 1: \n"
" switch(a + 1) {\n"
" case 2 : a = 1; break;\n"
" default : a = 2; break;\n"
" } // fall-through\n"
" case 2: a = 3;\n"
"}\n",
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("Switch.golden")));
}
TEST_F(BytecodeGeneratorTest, BasicBlockToBoolean) {
std::string snippets[] = {
"var a = 1; if (a || a < 0) { return 1; }\n",
"var a = 1; if (a && a < 0) { return 1; }\n",
"var a = 1; a = (a || a < 0) ? 2 : 3;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("BasicBlockToBoolean.golden")));
}
TEST_F(BytecodeGeneratorTest, DeadCodeRemoval) {
std::string snippets[] = {
"return; var a = 1; a();\n",
"if (false) { return; }; var a = 1;\n",
"if (true) { return 1; } else { return 2; };\n",
"var a = 1; if (a) { return 1; }; return 2;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("DeadCodeRemoval.golden")));
}
TEST_F(BytecodeGeneratorTest, ThisFunction) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"var f;\n"
"f = function f() {};",
"var f;\n"
"f = function f() { return f; };",
};
CHECK(CompareTexts(BuildActual(printer(), snippets, "", "\nf();"),
LoadGolden("ThisFunction.golden")));
}
TEST_F(BytecodeGeneratorTest, NewTarget) {
std::string snippets[] = {
"return new.target;\n",
"new.target;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("NewTarget.golden")));
}
TEST_F(BytecodeGeneratorTest, RemoveRedundantLdar) {
std::string snippets[] = {
"var ld_a = 1;\n" // This test is to check Ldar does not
"while(true) {\n" // get removed if the preceding Star is
" ld_a = ld_a + ld_a;\n" // in a different basicblock.
" if (ld_a > 10) break;\n"
"}\n"
"return ld_a;\n",
"var ld_a = 1;\n"
"do {\n"
" ld_a = ld_a + ld_a;\n"
" if (ld_a > 10) continue;\n"
"} while(false);\n"
"return ld_a;\n",
"var ld_a = 1;\n"
" ld_a = ld_a + ld_a;\n"
" return ld_a;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("RemoveRedundantLdar.golden")));
}
TEST_F(BytecodeGeneratorTest, GenerateTestUndetectable) {
std::string snippets[] = {
"var obj_a = {val:1};\n"
"var b = 10;\n"
"if (obj_a == null) { b = 20;}\n"
"return b;\n",
"var obj_a = {val:1};\n"
"var b = 10;\n"
"if (obj_a == undefined) { b = 20;}\n"
"return b;\n",
"var obj_a = {val:1};\n"
"var b = 10;\n"
"if (obj_a != null) { b = 20;}\n"
"return b;\n",
"var obj_a = {val:1};\n"
"var b = 10;\n"
"if (obj_a != undefined) { b = 20;}\n"
"return b;\n",
"var obj_a = {val:1};\n"
"var b = 10;\n"
"if (obj_a === null) { b = 20;}\n"
"return b;\n",
"var obj_a = {val:1};\n"
"var b = 10;\n"
"if (obj_a === undefined) { b = 20;}\n"
"return b;\n",
"var obj_a = {val:1};\n"
"var b = 10;\n"
"if (obj_a !== null) { b = 20;}\n"
"return b;\n",
"var obj_a = {val:1};\n"
"var b = 10;\n"
"if (obj_a !== undefined) { b = 20;}\n"
"return b;\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("GenerateTestUndetectable.golden")));
}
TEST_F(BytecodeGeneratorTest, AssignmentsInBinaryExpression) {
std::string snippets[] = {
"var x = 0, y = 1;\n"
"return (x = 2, y = 3, x = 4, y = 5);\n",
"var x = 55;\n"
"var y = (x = 100);\n"
"return y;\n",
"var x = 55;\n"
"x = x + (x = 100) + (x = 101);\n"
"return x;\n",
"var x = 55;\n"
"x = (x = 56) - x + (x = 57);\n"
"x++;\n"
"return x;\n",
"var x = 55;\n"
"var y = x + (x = 1) + (x = 2) + (x = 3);\n"
"return y;\n",
"var x = 55;\n"
"var x = x + (x = 1) + (x = 2) + (x = 3);\n"
"return x;\n",
"var x = 10, y = 20;\n"
"return x + (x = 1) + (x + 1) * (y = 2) + (y = 3) + (x = 4) + (y = 5) + "
"y;\n",
"var x = 17;\n"
"return 1 + x + (x++) + (++x);\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("AssignmentsInBinaryExpression.golden")));
}
TEST_F(BytecodeGeneratorTest, DestructuringAssignment) {
std::string snippets[] = {
"var x, a = [0,1,2,3];\n"
"[x] = a;\n",
"var x, y, a = [0,1,2,3];\n"
"[,x,...y] = a;\n",
"var x={}, y, a = [0];\n"
"[x.foo,y=4] = a;\n",
"var x, a = {x:1};\n"
"({x} = a);\n",
"var x={}, a = {y:1};\n"
"({y:x.foo} = a);\n",
"var x, a = {y:1, w:2, v:3};\n"
"({x=0,...y} = a);\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("DestructuringAssignment.golden")));
}
TEST_F(BytecodeGeneratorTest, Eval) {
std::string snippets[] = {
"return eval('1;');\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("Eval.golden")));
}
TEST_F(BytecodeGeneratorTest, LookupSlot) {
printer().set_test_function_name("f");
// clang-format off
std::string snippets[] = {
"eval('var x = 10;'); return x;\n",
"eval('var x = 10;'); return typeof x;\n",
"x = 20; return eval('');\n",
"var x = 20;\n"
"f = function(){\n"
" eval('var x = 10');\n"
" return x;\n"
"}\n"
"f();\n",
"x = 20;\n"
"f = function(){\n"
" eval('var x = 10');\n"
" return x;\n"
"}\n"
"f();\n"
};
// clang-format on
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("LookupSlot.golden")));
}
TEST_F(BytecodeGeneratorTest, CallLookupSlot) {
std::string snippets[] = {
"g = function(){}; eval(''); return g();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CallLookupSlot.golden")));
}
// TODO(mythria): tests for variable/function declaration in lookup slots.
TEST_F(BytecodeGeneratorTest, LookupSlotInEval) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"return x;",
"x = 10;",
"'use strict'; x = 10;",
"return typeof x;",
};
std::string actual = BuildActual(printer(), snippets,
"var f;\n"
"var x = 1;\n"
"function f1() {\n"
" eval(\"function t() { ",
" }; f = t; f();\");\n"
"}\n"
"f1();");
CHECK(CompareTexts(actual, LoadGolden("LookupSlotInEval.golden")));
}
TEST_F(BytecodeGeneratorTest, DeleteLookupSlotInEval) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"delete x;",
"return delete y;",
"return delete z;",
};
std::string actual = BuildActual(printer(), snippets,
"var f;\n"
"var x = 1;\n"
"z = 10;\n"
"function f1() {\n"
" var y;\n"
" eval(\"function t() { ",
" }; f = t; f();\");\n"
"}\n"
"f1();");
CHECK(CompareTexts(actual, LoadGolden("DeleteLookupSlotInEval.golden")));
}
TEST_F(BytecodeGeneratorTest, WideRegisters) {
// Prepare prologue that creates frame for lots of registers.
std::ostringstream os;
for (size_t i = 0; i < 157; ++i) {
os << "var x" << i << " = 0;\n";
}
std::string prologue(os.str());
std::string snippets[] = {
"x0 = x127;\n"
"return x0;\n",
"x127 = x126;\n"
"return x127;\n",
"if (x2 > 3) { return x129; }\n"
"return x128;\n",
"var x0 = 0;\n"
"if (x129 == 3) { var x129 = x0; }\n"
"if (x2 > 3) { return x0; }\n"
"return x129;\n",
"var x0 = 0;\n"
"var x1 = 0;\n"
"for (x128 = 0; x128 < 64; x128++) {"
" x1 += x128;"
"}"
"return x128;\n",
"var x0 = 1234;\n"
"var x1 = 0;\n"
"for (x128 in x0) {"
" x1 += x128;"
"}"
"return x1;\n",
"x0 = %Add(x64, x63);\n"
"x1 = %Add(x27, x143);\n"
"%TheHole();\n"
"return x1;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets, prologue.c_str()),
LoadGolden("WideRegisters.golden")));
}
TEST_F(BytecodeGeneratorTest, ConstVariable) {
std::string snippets[] = {
"const x = 10;\n",
"const x = 10; return x;\n",
"const x = ( x = 20);\n",
"const x = 10; x = 20;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ConstVariable.golden")));
}
TEST_F(BytecodeGeneratorTest, LetVariable) {
std::string snippets[] = {
"let x = 10;\n",
"let x = 10; return x;\n",
"let x = (x = 20);\n",
"let x = 10; x = 20;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("LetVariable.golden")));
}
TEST_F(BytecodeGeneratorTest, ConstVariableContextSlot) {
// TODO(mythria): Add tests for initialization of this via super calls.
// TODO(mythria): Add tests that walk the context chain.
std::string snippets[] = {
"const x = 10; function f1() {return x;}\n",
"const x = 10; function f1() {return x;} return x;\n",
"const x = (x = 20); function f1() {return x;}\n",
"const x = 10; x = 20; function f1() {return x;}\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ConstVariableContextSlot.golden")));
}
TEST_F(BytecodeGeneratorTest, LetVariableContextSlot) {
std::string snippets[] = {
"let x = 10; function f1() {return x;}\n",
"let x = 10; function f1() {return x;} return x;\n",
"let x = (x = 20); function f1() {return x;}\n",
"let x = 10; x = 20; function f1() {return x;}\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("LetVariableContextSlot.golden")));
}
TEST_F(BytecodeGeneratorTest, WithStatement) {
std::string snippets[] = {
"with ({x:42}) { return x; }\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("WithStatement.golden")));
}
TEST_F(BytecodeGeneratorTest, DoDebugger) {
std::string snippets[] = {
"debugger;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("DoDebugger.golden")));
}
TEST_F(BytecodeGeneratorTest, ClassDeclarations) {
std::string snippets[] = {
"class Person {\n"
" constructor(name) { this.name = name; }\n"
" speak() { console.log(this.name + ' is speaking.'); }\n"
"}\n",
"class person {\n"
" constructor(name) { this.name = name; }\n"
" speak() { console.log(this.name + ' is speaking.'); }\n"
"}\n",
"var n0 = 'a';\n"
"var n1 = 'b';\n"
"class N {\n"
" [n0]() { return n0; }\n"
" static [n1]() { return n1; }\n"
"}\n",
"var count = 0;\n"
"class C { constructor() { count++; }}\n"
"return new C();\n",
"(class {})\n"
"class E { static name () {}}\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ClassDeclarations.golden")));
}
TEST_F(BytecodeGeneratorTest, ClassAndSuperClass) {
printer().set_wrap(false);
printer().set_test_function_name("test");
std::string snippets[] = {
"var test;\n"
"(function() {\n"
" class A {\n"
" method() { return 2; }\n"
" }\n"
" class B extends A {\n"
" method() { return super.method() + 1; }\n"
" }\n"
" test = new B().method;\n"
" test();\n"
"})();\n",
"var test;\n"
"(function() {\n"
" class A {\n"
" get x() { return 1; }\n"
" set x(val) { return; }\n"
" }\n"
" class B extends A {\n"
" method() { super.x = 2; return super.x; }\n"
" }\n"
" test = new B().method;\n"
" test();\n"
"})();\n",
"var test;\n"
"(function() {\n"
" class A {\n"
" constructor(x) { this.x_ = x; }\n"
" }\n"
" class B extends A {\n"
" constructor() { super(1); this.y_ = 2; }\n"
" }\n"
" test = new B().constructor;\n"
"})();\n",
"var test;\n"
"(function() {\n"
" class A {\n"
" constructor() { this.x_ = 1; }\n"
" }\n"
" class B extends A {\n"
" constructor() { super(); this.y_ = 2; }\n"
" }\n"
" test = new B().constructor;\n"
"})();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ClassAndSuperClass.golden")));
}
TEST_F(BytecodeGeneratorTest, PublicClassFields) {
std::string snippets[] = {
"{\n"
" class A {\n"
" a;\n"
" ['b'];\n"
" }\n"
"\n"
" class B {\n"
" a = 1;\n"
" ['b'] = this.a;\n"
" }\n"
" new A;\n"
" new B;\n"
"}\n",
"{\n"
" class A extends class {} {\n"
" a;\n"
" ['b'];\n"
" }\n"
"\n"
" class B extends class {} {\n"
" a = 1;\n"
" ['b'] = this.a;\n"
" foo() { return 1; }\n"
" constructor() {\n"
" super();\n"
" }\n"
" }\n"
"\n"
" class C extends B {\n"
" a = 1;\n"
" ['b'] = this.a;\n"
" constructor() {\n"
" (() => super())();\n"
" }\n"
" }\n"
"\n"
" new A;\n"
" new B;\n"
" new C;\n"
"}\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PublicClassFields.golden")));
}
TEST_F(BytecodeGeneratorTest, PrivateClassFields) {
std::string snippets[] = {
"{\n"
" class A {\n"
" #a;\n"
" constructor() {\n"
" this.#a = 1;\n"
" }\n"
" }\n"
"\n"
" class B {\n"
" #a = 1;\n"
" }\n"
" new A;\n"
" new B;\n"
"}\n",
"{\n"
" class A extends class {} {\n"
" #a;\n"
" constructor() {\n"
" super();\n"
" this.#a = 1;\n"
" }\n"
" }\n"
"\n"
" class B extends class {} {\n"
" #a = 1;\n"
" #b = this.#a;\n"
" foo() { return this.#a; }\n"
" bar(v) { this.#b = v; }\n"
" constructor() {\n"
" super();\n"
" this.foo();\n"
" this.bar(3);\n"
" }\n"
" }\n"
"\n"
" class C extends B {\n"
" #a = 2;\n"
" constructor() {\n"
" (() => super())();\n"
" }\n"
" }\n"
"\n"
" new A;\n"
" new B;\n"
" new C;\n"
"};\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PrivateClassFields.golden")));
}
TEST_F(BytecodeGeneratorTest, PrivateClassFieldAccess) {
printer().set_wrap(false);
printer().set_test_function_name("test");
std::string snippets[] = {
"class A {\n"
" #a;\n"
" #b;\n"
" constructor() {\n"
" this.#a = this.#b;\n"
" }\n"
"}\n"
"\n"
"var test = A;\n"
"new test;\n",
"class B {\n"
" #a;\n"
" #b;\n"
" constructor() {\n"
" this.#a = this.#b;\n"
" }\n"
" force(str) {\n"
" eval(str);\n"
" }\n"
"}\n"
"\n"
"var test = B;\n"
"new test;\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PrivateClassFieldAccess.golden")));
}
TEST_F(BytecodeGeneratorTest, PrivateMethodDeclaration) {
std::string snippets[] = {
"{\n"
" class A {\n"
" #a() { return 1; }\n"
" }\n"
"}\n",
"{\n"
" class D {\n"
" #d() { return 1; }\n"
" }\n"
" class E extends D {\n"
" #e() { return 2; }\n"
" }\n"
"}\n",
"{\n"
" class A { foo() {} }\n"
" class C extends A {\n"
" #m() { return super.foo; }\n"
" }\n"
"}\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PrivateMethodDeclaration.golden")));
}
TEST_F(BytecodeGeneratorTest, PrivateMethodAccess) {
printer().set_wrap(false);
printer().set_test_function_name("test");
std::string snippets[] = {
"class A {\n"
" #a() { return 1; }\n"
" constructor() { return this.#a(); }\n"
"}\n"
"\n"
"var test = A;\n"
"new A;\n",
"class B {\n"
" #b() { return 1; }\n"
" constructor() { this.#b = 1; }\n"
"}\n"
"\n"
"var test = B;\n"
"new test;\n",
"class C {\n"
" #c() { return 1; }\n"
" constructor() { this.#c++; }\n"
"}\n"
"\n"
"var test = C;\n"
"new test;\n",
"class D {\n"
" #d() { return 1; }\n"
" constructor() { (() => this)().#d(); }\n"
"}\n"
"\n"
"var test = D;\n"
"new test;\n",
"var test;\n"
"class F extends class {} {\n"
" #method() { }\n"
" constructor() {\n"
" (test = () => super())();\n"
" this.#method();\n"
" }\n"
"};\n"
"new F;\n",
"var test;\n"
"class G extends class {} {\n"
" #method() { }\n"
" constructor() {\n"
" test = () => super();\n"
" test();\n"
" this.#method();\n"
" }\n"
"};\n"
"new G();\n",
"var test;\n"
"class H extends class {} {\n"
" #method() { }\n"
" constructor(str) {\n"
" eval(str);\n"
" this.#method();\n"
" }\n"
"};\n"
"new test('test = () => super(); test()');\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PrivateMethodAccess.golden")));
}
TEST_F(BytecodeGeneratorTest, PrivateAccessorAccess) {
printer().set_wrap(false);
printer().set_test_function_name("test");
std::string snippets[] = {
"class A {\n"
" get #a() { return 1; }\n"
" set #a(val) { }\n"
"\n"
" constructor() {\n"
" this.#a++;\n"
" this.#a = 1;\n"
" return this.#a;\n"
" }\n"
"}\n"
"var test = A;\n"
"new test;\n",
"class B {\n"
" get #b() { return 1; }\n"
" constructor() { this.#b++; }\n"
"}\n"
"var test = B;\n"
"new test;\n",
"class C {\n"
" set #c(val) { }\n"
" constructor() { this.#c++; }\n"
"}\n"
"var test = C;\n"
"new test;\n",
"class D {\n"
" get #d() { return 1; }\n"
" constructor() { this.#d = 1; }\n"
"}\n"
"var test = D;\n"
"new test;\n",
"class E {\n"
" set #e(val) { }\n"
" constructor() { this.#e; }\n"
"}\n"
"var test = E;\n"
"new test;\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PrivateAccessorAccess.golden")));
}
TEST_F(BytecodeGeneratorTest, StaticPrivateMethodDeclaration) {
std::string snippets[] = {
"{\n"
" class A {\n"
" static #a() { return 1; }\n"
" }\n"
"}\n",
"{\n"
" class A {\n"
" static get #a() { return 1; }\n"
" }\n"
"}\n",
"{\n"
" class A {\n"
" static set #a(val) { }\n"
" }\n"
"}\n",
"{\n"
" class A {\n"
" static get #a() { return 1; }\n"
" static set #a(val) { }\n"
" }\n"
"}\n",
"{\n"
" class A {\n"
" static #a() { }\n"
" #b() { }\n"
" }\n"
"}\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("StaticPrivateMethodDeclaration.golden")));
}
TEST_F(BytecodeGeneratorTest, StaticPrivateMethodAccess) {
printer().set_wrap(false);
printer().set_test_function_name("test");
std::string snippets[] = {
"class A {\n"
" static #a() { return 1; }\n"
" static test() { return this.#a(); }\n"
"}\n"
"\n"
"var test = A.test;\n"
"test();\n",
"class B {\n"
" static #b() { return 1; }\n"
" static test() { this.#b = 1; }\n"
"}\n"
"\n"
"var test = B.test;\n"
"test();\n",
"class C {\n"
" static #c() { return 1; }\n"
" static test() { this.#c++; }\n"
"}\n"
"\n"
"var test = C.test;\n"
"test();\n",
"class D {\n"
" static get #d() { return 1; }\n"
" static set #d(val) { }\n"
"\n"
" static test() {\n"
" this.#d++;\n"
" this.#d = 1;\n"
" return this.#d;\n"
" }\n"
"}\n"
"\n"
"var test = D.test;\n"
"test();\n",
"class E {\n"
" static get #e() { return 1; }\n"
" static test() { this.#e++; }\n"
"}\n"
"var test = E.test;\n"
"test();\n",
"class F {\n"
" static set #f(val) { }\n"
" static test() { this.#f++; }\n"
"}\n"
"var test = F.test;\n"
"test();\n",
"class G {\n"
" static get #d() { return 1; }\n"
" static test() { this.#d = 1; }\n"
"}\n"
"var test = G.test;\n"
"test();\n",
"class H {\n"
" set #h(val) { }\n"
" static test() { this.#h; }\n"
"}\n"
"var test = H.test;\n"
"test();\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("StaticPrivateMethodAccess.golden")));
}
TEST_F(BytecodeGeneratorTest, PrivateAccessorDeclaration) {
std::string snippets[] = {
"{\n"
" class A {\n"
" get #a() { return 1; }\n"
" set #a(val) { }\n"
" }\n"
"}\n",
"{\n"
" class B {\n"
" get #b() { return 1; }\n"
" }\n"
"}\n",
"{\n"
" class C {\n"
" set #c(val) { }\n"
" }\n"
"}\n",
"{\n"
" class D {\n"
" get #d() { return 1; }\n"
" set #d(val) { }\n"
" }\n"
"\n"
" class E extends D {\n"
" get #e() { return 2; }\n"
" set #e(val) { }\n"
" }\n"
"}\n",
"{\n"
" class A { foo() {} }\n"
" class C extends A {\n"
" get #a() { return super.foo; }\n"
" }\n"
" new C();\n"
"}\n",
"{\n"
" class A { foo(val) {} }\n"
" class C extends A {\n"
" set #a(val) { super.foo(val); }\n"
" }\n"
" new C();\n"
"}\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("PrivateAccessorDeclaration.golden")));
}
TEST_F(BytecodeGeneratorTest, StaticClassFields) {
std::string snippets[] = {
"{\n"
" class A {\n"
" a;\n"
" ['b'];\n"
" static c;\n"
" static ['d'];\n"
" }\n"
"\n"
" class B {\n"
" a = 1;\n"
" ['b'] = this.a;\n"
" static c = 3;\n"
" static ['d'] = this.c;\n"
" }\n"
" new A;\n"
" new B;\n"
"}\n",
"{\n"
" class A extends class {} {\n"
" a;\n"
" ['b'];\n"
" static c;\n"
" static ['d'];\n"
" }\n"
"\n"
" class B extends class {} {\n"
" a = 1;\n"
" ['b'] = this.a;\n"
" static c = 3;\n"
" static ['d'] = this.c;\n"
" foo() { return 1; }\n"
" constructor() {\n"
" super();\n"
" }\n"
" }\n"
"\n"
" class C extends B {\n"
" a = 1;\n"
" ['b'] = this.a;\n"
" static c = 3;\n"
" static ['d'] = super.foo();\n"
" constructor() {\n"
" (() => super())();\n"
" }\n"
" }\n"
"\n"
" new A;\n"
" new B;\n"
" new C;\n"
"}\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("StaticClassFields.golden")));
}
TEST_F(BytecodeGeneratorTest, Generators) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function* f() { }\n"
"f();\n",
"function* f() { yield 42 }\n"
"f();\n",
"function* f() { for (let x of [42]) yield x }\n"
"f();\n",
"function* g() { yield 42 }\n"
"function* f() { yield* g() }\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("Generators.golden")));
}
TEST_F(BytecodeGeneratorTest, AsyncGenerators) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"async function* f() { }\n"
"f();\n",
"async function* f() { yield 42 }\n"
"f();\n",
"async function* f() { for (let x of [42]) yield x }\n"
"f();\n",
"function* g() { yield 42 }\n"
"async function* f() { yield* g() }\n"
"f();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("AsyncGenerators.golden")));
}
TEST_F(BytecodeGeneratorTest, Modules) {
printer().set_wrap(false);
printer().set_module(true);
printer().set_top_level(true);
std::string snippets[] = {
"import \"bar\";\n",
"import {foo} from \"bar\";\n",
"import {foo as goo} from \"bar\";\n"
"goo(42);\n"
"{ let x; { goo(42) } };\n",
"export var foo = 42;\n"
"foo++;\n"
"{ let x; { foo++ } };\n",
"export let foo = 42;\n"
"foo++;\n"
"{ let x; { foo++ } };\n",
"export const foo = 42;\n"
"foo++;\n"
"{ let x; { foo++ } };\n",
"export default (function () {});\n",
"export default (class {});\n",
"export {foo as goo} from \"bar\"\n",
"export * from \"bar\"\n",
"import * as foo from \"bar\"\n"
"foo.f(foo, foo.x);\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("Modules.golden")));
}
TEST_F(BytecodeGeneratorTest, AsyncModules) {
printer().set_wrap(false);
printer().set_module(true);
printer().set_top_level(true);
std::string snippets[] = {
"await 42;\n",
"await import(\"foo\");\n",
"await 42;\n"
"async function foo() {\n"
" await 42;\n"
"}\n"
"foo();\n",
"import * as foo from \"bar\";\n"
"await import(\"goo\");\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("AsyncModules.golden")));
}
TEST_F(BytecodeGeneratorTest, SuperCallAndSpread) {
printer().set_wrap(false);
printer().set_test_function_name("test");
std::string snippets[] = {
"var test;\n"
"(function() {\n"
" class A {\n"
" constructor(...args) { this.baseArgs = args; }\n"
" }\n"
" class B extends A {}\n"
" test = new B(1, 2, 3).constructor;\n"
"})();\n",
"var test;\n"
"(function() {\n"
" class A {\n"
" constructor(...args) { this.baseArgs = args; }\n"
" }\n"
" class B extends A {\n"
" constructor(...args) { super(1, ...args); }\n"
" }\n"
" test = new B(1, 2, 3).constructor;\n"
"})();\n",
"var test;\n"
"(function() {\n"
" class A {\n"
" constructor(...args) { this.baseArgs = args; }\n"
" }\n"
" class B extends A {\n"
" constructor(...args) { super(1, ...args, 1); }\n"
" }\n"
" test = new B(1, 2, 3).constructor;\n"
"})();\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("SuperCallAndSpread.golden")));
}
TEST_F(BytecodeGeneratorTest, CallAndSpread) {
std::string snippets[] = {"Math.max(...[1, 2, 3]);\n",
"Math.max(0, ...[1, 2, 3]);\n",
"Math.max(0, ...[1, 2, 3], 4);\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("CallAndSpread.golden")));
}
TEST_F(BytecodeGeneratorTest, NewAndSpread) {
std::string snippets[] = {
"class A { constructor(...args) { this.args = args; } }\n"
"new A(...[1, 2, 3]);\n",
"class A { constructor(...args) { this.args = args; } }\n"
"new A(0, ...[1, 2, 3]);\n",
"class A { constructor(...args) { this.args = args; } }\n"
"new A(0, ...[1, 2, 3], 4);\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("NewAndSpread.golden")));
}
TEST_F(BytecodeGeneratorTest, ForAwaitOf) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"async function f() {\n"
" for await (let x of [1, 2, 3]) {}\n"
"}\n"
"f();\n",
"async function f() {\n"
" for await (let x of [1, 2, 3]) { return x; }\n"
"}\n"
"f();\n",
"async function f() {\n"
" for await (let x of [10, 20, 30]) {\n"
" if (x == 10) continue;\n"
" if (x == 20) break;\n"
" }\n"
"}\n"
"f();\n",
"async function f() {\n"
" var x = { 'a': 1, 'b': 2 };\n"
" for (x['a'] of [1,2,3]) { return x['a']; }\n"
"}\n"
"f();\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ForAwaitOf.golden")));
}
TEST_F(BytecodeGeneratorTest, StandardForLoop) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function f() {\n"
" for (let x = 0; x < 10; ++x) { let y = x; }\n"
"}\n"
"f();\n",
"function f() {\n"
" for (let x = 0; x < 10; ++x) { eval('1'); }\n"
"}\n"
"f();\n",
"function f() {\n"
" for (let x = 0; x < 10; ++x) { (function() { return x; })(); }\n"
"}\n"
"f();\n",
"function f() {\n"
" for (let { x, y } = { x: 0, y: 3 }; y > 0; --y) { let z = x + y; }\n"
"}\n"
"f();\n",
"function* f() {\n"
" for (let x = 0; x < 10; ++x) { let y = x; }\n"
"}\n"
"f();\n",
"function* f() {\n"
" for (let x = 0; x < 10; ++x) yield x;\n"
"}\n"
"f();\n",
"async function f() {\n"
" for (let x = 0; x < 10; ++x) { let y = x; }\n"
"}\n"
"f();\n",
"async function f() {\n"
" for (let x = 0; x < 10; ++x) await x;\n"
"}\n"
"f();\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("StandardForLoop.golden")));
}
TEST_F(BytecodeGeneratorTest, ForOfLoop) {
printer().set_wrap(false);
printer().set_test_function_name("f");
std::string snippets[] = {
"function f(arr) {\n"
" for (let x of arr) { let y = x; }\n"
"}\n"
"f([1, 2, 3]);\n",
"function f(arr) {\n"
" for (let x of arr) { eval('1'); }\n"
"}\n"
"f([1, 2, 3]);\n",
"function f(arr) {\n"
" for (let x of arr) { (function() { return x; })(); }\n"
"}\n"
"f([1, 2, 3]);\n",
"function f(arr) {\n"
" for (let { x, y } of arr) { let z = x + y; }\n"
"}\n"
"f([{ x: 0, y: 3 }, { x: 1, y: 9 }, { x: -12, y: 17 }]);\n",
"function* f(arr) {\n"
" for (let x of arr) { let y = x; }\n"
"}\n"
"f([1, 2, 3]);\n",
"function* f(arr) {\n"
" for (let x of arr) yield x;\n"
"}\n"
"f([1, 2, 3]);\n",
"async function f(arr) {\n"
" for (let x of arr) { let y = x; }\n"
"}\n"
"f([1, 2, 3]);\n",
"async function f(arr) {\n"
" for (let x of arr) await x;\n"
"}\n"
"f([1, 2, 3]);\n"};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("ForOfLoop.golden")));
}
TEST_F(BytecodeGeneratorTest, StringConcat) {
std::string snippets[] = {
"var a = 1;\n"
"var b = 2;\n"
"return a + b + 'string';\n",
"var a = 1;\n"
"var b = 2;\n"
"return 'string' + a + b;\n",
"var a = 1;\n"
"var b = 2;\n"
"return a + 'string' + b;\n",
"var a = 1;\n"
"var b = 2;\n"
"return 'foo' + a + 'bar' + b + 'baz' + 1;\n",
"var a = 1;\n"
"var b = 2;\n"
"return (a + 'string') + ('string' + b);\n",
"var a = 1;\n"
"var b = 2;\n"
"function foo(a, b) { };\n"
"return 'string' + foo(a, b) + a + b;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("StringConcat.golden")));
}
TEST_F(BytecodeGeneratorTest, TemplateLiterals) {
std::string snippets[] = {
"var a = 1;\n"
"var b = 2;\n"
"return `${a}${b}string`;\n",
"var a = 1;\n"
"var b = 2;\n"
"return `string${a}${b}`;\n",
"var a = 1;\n"
"var b = 2;\n"
"return `${a}string${b}`;\n",
"var a = 1;\n"
"var b = 2;\n"
"return `foo${a}bar${b}baz${1}`;\n",
"var a = 1;\n"
"var b = 2;\n"
"return `${a}string` + `string${b}`;\n",
"var a = 1;\n"
"var b = 2;\n"
"function foo(a, b) { };\n"
"return `string${foo(a, b)}${a}${b}`;\n",
};
CHECK(CompareTexts(BuildActual(printer(), snippets),
LoadGolden("TemplateLiterals.golden")));
}
TEST_F(BytecodeGeneratorTest, ElideRedundantLoadOperationOfImmutableContext) {
printer().set_wrap(false);
printer().set_test_function_name("test");
std::string snippets[] = {
"var test;\n"
"(function () {\n"
" var a = {b: 2, c: 3};\n"
" function foo() {a.b = a.c;}\n"
" foo();\n"
" test = foo;\n"
"})();\n"};
CHECK(CompareTexts(
BuildActual(printer(), snippets),
LoadGolden("ElideRedundantLoadOperationOfImmutableContext.golden")));
}
} // namespace interpreter
} // namespace internal
} // namespace v8
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