diff options
Diffstat (limited to 'src/corelib/xml/qxmlstream_p.h')
-rw-r--r-- | src/corelib/xml/qxmlstream_p.h | 43 |
1 files changed, 26 insertions, 17 deletions
diff --git a/src/corelib/xml/qxmlstream_p.h b/src/corelib/xml/qxmlstream_p.h index 8ef6e4b8fe..5645d812eb 100644 --- a/src/corelib/xml/qxmlstream_p.h +++ b/src/corelib/xml/qxmlstream_p.h @@ -754,20 +754,24 @@ public: int readBufferPos; QXmlStreamSimpleStack<uint> putStack; struct Entity { - Entity(const QString& str = QString()) - :value(str), external(false), unparsed(false), literal(false), + Entity() = default; + Entity(const QString &name, const QString &value) + : name(name), value(value), external(false), unparsed(false), literal(false), hasBeenParsed(false), isCurrentlyReferenced(false){} - static inline Entity createLiteral(const QString &entity) - { Entity result(entity); result.literal = result.hasBeenParsed = true; return result; } - QString value; + static inline Entity createLiteral(QLatin1String name, QLatin1String value) + { Entity result(name, value); result.literal = result.hasBeenParsed = true; return result; } + QString name, value; uint external : 1; uint unparsed : 1; uint literal : 1; uint hasBeenParsed : 1; uint isCurrentlyReferenced : 1; }; - QHash<QString, Entity> entityHash; - QHash<QString, Entity> parameterEntityHash; + // these hash tables use a QStringView as a key to avoid creating QStrings + // just for lookup. The keys are usually views into Entity::name and thus + // are guaranteed to have the same lifetime as the referenced data: + QHash<QStringView, Entity> entityHash; + QHash<QStringView, Entity> parameterEntityHash; QXmlStreamSimpleStack<Entity *>entityReferenceStack; inline bool referenceEntity(Entity &entity) { if (entity.isCurrentlyReferenced) { @@ -920,6 +924,11 @@ public: const Value &symbol = sym(index); return QStringRef(&textBuffer, symbol.pos + symbol.prefix, symbol.len - symbol.prefix); } + QStringView symView(int index) const + { + const Value &symbol = sym(index); + return QStringView(textBuffer.data() + symbol.pos, symbol.len).mid(symbol.prefix); + } inline QStringRef symName(int index) { const Value &symbol = sym(index); return QStringRef(&textBuffer, symbol.pos, symbol.len); @@ -1490,13 +1499,13 @@ bool QXmlStreamReaderPrivate::parse() EntityDeclaration &entityDeclaration = entityDeclarations.top(); if (!entityDeclaration.external) entityDeclaration.value = symString(2); - QString entityName = entityDeclaration.name.toString(); - QHash<QString, Entity> &hash = entityDeclaration.parameter ? parameterEntityHash : entityHash; - if (!hash.contains(entityName)) { - Entity entity(entityDeclaration.value.toString()); + auto &hash = entityDeclaration.parameter ? parameterEntityHash : entityHash; + if (!hash.contains(qToStringViewIgnoringNull(entityDeclaration.name))) { + Entity entity(entityDeclaration.name.toString(), + entityDeclaration.value.toString()); entity.unparsed = (!entityDeclaration.notationName.isNull()); entity.external = entityDeclaration.external; - hash.insert(entityName, entity); + hash.insert(qToStringViewIgnoringNull(entity.name), entity); } } break; @@ -1791,7 +1800,7 @@ bool QXmlStreamReaderPrivate::parse() case 240: { sym(1).len += sym(2).len + 1; - QString reference = symString(2).toString(); + QStringView reference = symView(2); if (entityHash.contains(reference)) { Entity &entity = entityHash[reference]; if (entity.unparsed) { @@ -1812,7 +1821,7 @@ bool QXmlStreamReaderPrivate::parse() } if (entityResolver) { - QString replacementText = resolveUndeclaredEntity(reference); + QString replacementText = resolveUndeclaredEntity(reference.toString()); if (!replacementText.isNull()) { putReplacement(replacementText); textBuffer.chop(2 + sym(2).len); @@ -1830,7 +1839,7 @@ bool QXmlStreamReaderPrivate::parse() case 241: { sym(1).len += sym(2).len + 1; - QString reference = symString(2).toString(); + QStringView reference = symView(2); if (parameterEntityHash.contains(reference)) { referenceToParameterEntityDetected = true; Entity &entity = parameterEntityHash[reference]; @@ -1853,7 +1862,7 @@ bool QXmlStreamReaderPrivate::parse() case 243: { sym(1).len += sym(2).len + 1; - QString reference = symString(2).toString(); + QStringView reference = symView(2); if (entityHash.contains(reference)) { Entity &entity = entityHash[reference]; if (entity.unparsed || entity.value.isNull()) { @@ -1874,7 +1883,7 @@ bool QXmlStreamReaderPrivate::parse() } if (entityResolver) { - QString replacementText = resolveUndeclaredEntity(reference); + QString replacementText = resolveUndeclaredEntity(reference.toString()); if (!replacementText.isNull()) { putReplacement(replacementText); textBuffer.chop(2 + sym(2).len); |