forked from mirrors/gecko-dev
109 lines
3.5 KiB
C++
109 lines
3.5 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsHtml5Portability.h"
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#include "jArray.h"
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#include "nsAtom.h"
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#include "nsHtml5TreeBuilder.h"
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#include "nsString.h"
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#include "mozilla/CheckedInt.h"
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int32_t nsHtml5Portability::checkedAdd(int32_t a, int32_t b) {
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mozilla::CheckedInt<int32_t> sum(a);
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sum += b;
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MOZ_RELEASE_ASSERT(sum.isValid(),
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"HTML input too large for signed 32-bit integer.");
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return sum.value();
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}
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nsAtom* nsHtml5Portability::newLocalNameFromBuffer(char16_t* buf,
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int32_t length,
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nsHtml5AtomTable* interner) {
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NS_ASSERTION(interner, "Didn't get an atom service.");
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return interner->GetAtom(nsDependentSubstring(buf, buf + length));
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}
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static bool ContainsWhiteSpace(mozilla::Span<char16_t> aSpan) {
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for (char16_t c : aSpan) {
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if (nsContentUtils::IsHTMLWhitespace(c)) {
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return true;
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}
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}
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return false;
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}
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nsHtml5String nsHtml5Portability::newStringFromBuffer(
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char16_t* buf, int32_t offset, int32_t length,
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nsHtml5TreeBuilder* treeBuilder, bool maybeAtomize) {
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if (!length) {
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return nsHtml5String::EmptyString();
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}
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if (maybeAtomize &&
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!ContainsWhiteSpace(mozilla::Span(buf + offset, length))) {
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return nsHtml5String::FromAtom(
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NS_AtomizeMainThread(nsDependentSubstring(buf + offset, length)));
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}
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return nsHtml5String::FromBuffer(buf + offset, length, treeBuilder);
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}
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nsHtml5String nsHtml5Portability::newEmptyString() {
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return nsHtml5String::EmptyString();
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}
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nsHtml5String nsHtml5Portability::newStringFromLiteral(const char* literal) {
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return nsHtml5String::FromLiteral(literal);
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}
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nsHtml5String nsHtml5Portability::newStringFromString(nsHtml5String string) {
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return string.Clone();
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}
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jArray<char16_t, int32_t> nsHtml5Portability::newCharArrayFromLocal(
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nsAtom* local) {
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nsAutoString temp;
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local->ToString(temp);
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int32_t len = temp.Length();
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jArray<char16_t, int32_t> arr = jArray<char16_t, int32_t>::newJArray(len);
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memcpy(arr, temp.BeginReading(), len * sizeof(char16_t));
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return arr;
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}
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jArray<char16_t, int32_t> nsHtml5Portability::newCharArrayFromString(
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nsHtml5String string) {
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MOZ_RELEASE_ASSERT(string);
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uint32_t len = string.Length();
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MOZ_RELEASE_ASSERT(len < INT32_MAX);
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jArray<char16_t, int32_t> arr = jArray<char16_t, int32_t>::newJArray(len);
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string.CopyToBuffer(arr);
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return arr;
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}
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bool nsHtml5Portability::localEqualsBuffer(nsAtom* local, char16_t* buf,
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int32_t length) {
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return local->Equals(buf, length);
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}
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bool nsHtml5Portability::lowerCaseLiteralIsPrefixOfIgnoreAsciiCaseString(
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const char* lowerCaseLiteral, nsHtml5String string) {
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return string.LowerCaseStartsWithASCII(lowerCaseLiteral);
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}
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bool nsHtml5Portability::lowerCaseLiteralEqualsIgnoreAsciiCaseString(
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const char* lowerCaseLiteral, nsHtml5String string) {
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return string.LowerCaseEqualsASCII(lowerCaseLiteral);
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}
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bool nsHtml5Portability::literalEqualsString(const char* literal,
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nsHtml5String string) {
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return string.EqualsASCII(literal);
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}
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bool nsHtml5Portability::stringEqualsString(nsHtml5String one,
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nsHtml5String other) {
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return one.Equals(other);
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}
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void nsHtml5Portability::initializeStatics() {}
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void nsHtml5Portability::releaseStatics() {}
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