Revision: 20003
Author: [email protected]
Date: Mon Mar 17 15:06:33 2014 UTC
Log: Add tests which ensure that the data produced by the preparser is
really used.
[email protected]
BUG=
Review URL: https://codereview.chromium.org/201133005
http://code.google.com/p/v8/source/detail?r=20003
Modified:
/branches/bleeding_edge/test/cctest/test-parsing.cc
=======================================
--- /branches/bleeding_edge/test/cctest/test-parsing.cc Mon Mar 17 10:21:01
2014 UTC
+++ /branches/bleeding_edge/test/cctest/test-parsing.cc Mon Mar 17 15:06:33
2014 UTC
@@ -258,6 +258,86 @@
i::DeleteArray(message);
delete error_preparse;
}
+
+
+TEST(PreparseFunctionDataIsUsed) {
+ // This tests that we actually do use the function data generated by the
+ // preparser.
+ v8::Isolate* isolate = CcTest::isolate();
+ v8::HandleScope handles(isolate);
+ v8::Local<v8::Context> context = v8::Context::New(isolate);
+ v8::Context::Scope context_scope(context);
+ int marker;
+ CcTest::i_isolate()->stack_guard()->SetStackLimit(
+ reinterpret_cast<uintptr_t>(&marker) - 128 * 1024);
+
+ const char* good_source =
+ "function this_is_lazy() { var a; } function foo() { return 25; }
foo();";
+
+ // Insert a syntax error inside the lazy function.
+ const char* bad_source =
+ "function this_is_lazy() { if ( } function foo() { return 25; }
foo();";
+
+ v8::ScriptData* preparse =
v8::ScriptData::PreCompile(v8_str(good_source));
+ CHECK(!preparse->HasError());
+
+ // Now compile the erroneous code with the good preparse data. If the
preparse
+ // data is used, the lazy function is skipped and it should compile fine.
+ v8::ScriptCompiler::Source source(
+ v8_str(bad_source),
+ v8::ScriptCompiler::CachedData(
+ reinterpret_cast<const uint8_t*>(preparse->Data()),
+ preparse->Length()));
+ v8::Local<v8::Value> result =
+ v8::ScriptCompiler::Compile(CcTest::isolate(), source)->Run();
+ CHECK(result->IsInt32());
+ CHECK_EQ(25, result->Int32Value());
+ delete preparse;
+}
+
+
+TEST(PreparseSymbolDataIsUsed) {
+ // This tests that we actually do use the symbol data generated by the
+ // preparser.
+
+ // Only do one compilation pass in this test (otherwise we will parse the
+ // source code again without preparse data and it will fail).
+ i::FLAG_crankshaft = false;
+
+ v8::Isolate* isolate = CcTest::isolate();
+ v8::HandleScope handles(isolate);
+ v8::Local<v8::Context> context = v8::Context::New(isolate);
+ v8::Context::Scope context_scope(context);
+ int marker;
+ CcTest::i_isolate()->stack_guard()->SetStackLimit(
+ reinterpret_cast<uintptr_t>(&marker) - 128 * 1024);
+
+ // Note that the ( before function makes the
+ const char* good_source =
+ "(function weird() { var foo = 26; return foo; })()";
+
+ // Insert an undefined identifier. If the preparser data is used, the
symbol
+ // stream is used instead, and this identifier resolves correctly
to"foo".
+ const char* bad_source =
+ "(function weird() { var foo = 26; return wut; })()";
+
+ v8::ScriptData* preparse =
v8::ScriptData::PreCompile(v8_str(good_source));
+ CHECK(!preparse->HasError());
+
+ // Now compile the erroneous code with the good preparse data. If the
preparse
+ // data is used, we will see a second occurrence of "foo" instead of the
+ // unknown "wut".
+ v8::ScriptCompiler::Source source(
+ v8_str(bad_source),
+ v8::ScriptCompiler::CachedData(
+ reinterpret_cast<const uint8_t*>(preparse->Data()),
+ preparse->Length()));
+ v8::Local<v8::Value> result =
+ v8::ScriptCompiler::Compile(CcTest::isolate(), source)->Run();
+ CHECK(result->IsInt32());
+ CHECK_EQ(26, result->Int32Value());
+ delete preparse;
+}
TEST(StandAlonePreParser) {
--
--
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