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/* 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
#include "mozilla/StringBuffer.h"
#include "jsapi.h"
#include "gc/Zone.h"
#include "js/String.h"
#include "jsapi-tests/tests.h"
#include "util/Text.h"
BEGIN_TEST(testStringBuffersLatin1) {
static const JS::Latin1Char chars[] = "This is just some random string";
static const size_t len = js_strlen(chars);
RefPtr<mozilla::StringBuffer> buffer =
mozilla::StringBuffer::Create(chars, len);
CHECK(buffer);
auto* bufferChars = static_cast<const JS::Latin1Char*>(buffer->Data());
// Don't purge the ExternalStringCache.
js::gc::AutoSuppressGC suppress(cx);
JS::Rooted<JSString*> str1(cx,
JS::NewStringFromLatin1Buffer(cx, buffer, len));
CHECK(str1);
CHECK_EQUAL(JS_GetStringLength(str1), len);
{
JS::AutoCheckCannotGC nogc;
size_t strLen;
const JS::Latin1Char* strChars =
JS_GetLatin1StringCharsAndLength(cx, nogc, str1, &strLen);
CHECK_EQUAL(strLen, len);
CHECK_EQUAL(strChars, bufferChars);
}
JS::Rooted<JSString*> str2(cx,
JS::NewStringFromLatin1Buffer(cx, buffer, len));
CHECK(str2);
cx->zone()->externalStringCache().purge();
JS::Rooted<JSString*> str3(
cx, JS::NewStringFromKnownLiveLatin1Buffer(cx, buffer, len));
CHECK(str3);
// Check the ExternalStringCache works.
CHECK_EQUAL(str1, str2);
#ifdef DEBUG
// Three references: buffer, str1/str2, str3.
CHECK_EQUAL(buffer->RefCount(), 3u);
#endif
mozilla::StringBuffer* buf;
CHECK(!JS::IsTwoByteStringWithStringBuffer(str2, &buf));
CHECK(JS::IsLatin1StringWithStringBuffer(str2, &buf));
CHECK_EQUAL(buf, buffer);
return true;
}
END_TEST(testStringBuffersLatin1)
BEGIN_TEST(testStringBuffersTwoByte) {
static const char16_t chars[] = u"This is just some random string";
static const size_t len = js_strlen(chars);
RefPtr<mozilla::StringBuffer> buffer =
mozilla::StringBuffer::Create(chars, len);
CHECK(buffer);
auto* bufferChars = static_cast<const char16_t*>(buffer->Data());
// Don't purge the ExternalStringCache.
js::gc::AutoSuppressGC suppress(cx);
JS::Rooted<JSString*> str1(cx,
JS::NewStringFromTwoByteBuffer(cx, buffer, len));
CHECK(str1);
CHECK_EQUAL(JS_GetStringLength(str1), len);
{
JS::AutoCheckCannotGC nogc;
size_t strLen;
const char16_t* strChars =
JS_GetTwoByteStringCharsAndLength(cx, nogc, str1, &strLen);
CHECK_EQUAL(strLen, len);
CHECK_EQUAL(strChars, bufferChars);
}
JS::Rooted<JSString*> str2(cx,
JS::NewStringFromTwoByteBuffer(cx, buffer, len));
CHECK(str2);
cx->zone()->externalStringCache().purge();
JS::Rooted<JSString*> str3(
cx, JS::NewStringFromKnownLiveTwoByteBuffer(cx, buffer, len));
CHECK(str3);
// Check the ExternalStringCache works.
CHECK_EQUAL(str1, str2);
#ifdef DEBUG
// Three references: buffer, str1/str2, str3.
CHECK_EQUAL(buffer->RefCount(), 3u);
#endif
mozilla::StringBuffer* buf;
CHECK(!JS::IsLatin1StringWithStringBuffer(str2, &buf));
CHECK(JS::IsTwoByteStringWithStringBuffer(str2, &buf));
CHECK_EQUAL(buf, buffer);
return true;
}
END_TEST(testStringBuffersTwoByte)
BEGIN_TEST(testStringBuffersUTF8) {
// UTF8 ASCII string buffer.
{
static const char chars[] = "This is a UTF-8 string but also ASCII";
static const size_t len = js_strlen(chars);
RefPtr<mozilla::StringBuffer> buffer =
mozilla::StringBuffer::Create(chars, len);
CHECK(buffer);
// Don't purge the ExternalStringCache.
js::gc::AutoSuppressGC suppress(cx);
JS::Rooted<JSString*> str1(cx,
JS::NewStringFromUTF8Buffer(cx, buffer, len));
CHECK(str1);
CHECK_EQUAL(JS_GetStringLength(str1), len);
mozilla::StringBuffer* buf;
CHECK(!JS::IsTwoByteStringWithStringBuffer(str1, &buf));
CHECK(JS::IsLatin1StringWithStringBuffer(str1, &buf));
CHECK_EQUAL(buf, buffer);
JS::Rooted<JSString*> str2(
cx, JS::NewStringFromKnownLiveUTF8Buffer(cx, buf, len));
CHECK(str2);
// Check the ExternalStringCache works.
CHECK_EQUAL(str1, str2);
#ifdef DEBUG
CHECK_EQUAL(buffer->RefCount(), 2u); // |buffer| and str1/str2.
#endif
}
// UTF8 non-ASCII string buffer. The passed in buffer isn't used.
{
static const char chars[] =
"This is a UTF-\xEF\xBC\x98 string but not ASCII";
static const size_t len = js_strlen(chars);
RefPtr<mozilla::StringBuffer> buffer =
mozilla::StringBuffer::Create(chars, len);
CHECK(buffer);
JS::Rooted<JSString*> str1(cx,
JS::NewStringFromUTF8Buffer(cx, buffer, len));
CHECK(str1);
CHECK_EQUAL(JS_GetStringLength(str1), 36u);
mozilla::StringBuffer* buf;
CHECK(!JS::IsLatin1StringWithStringBuffer(str1, &buf));
CHECK(!JS::IsTwoByteStringWithStringBuffer(str1, &buf));
JS::Rooted<JSString*> str2(
cx, JS::NewStringFromKnownLiveUTF8Buffer(cx, buffer, len));
CHECK(str2);
#ifdef DEBUG
CHECK_EQUAL(buffer->RefCount(), 1u); // Just |buffer|.
#endif
}
return true;
}
END_TEST(testStringBuffersUTF8)