YarrUnicodeProperties.cpp [plain text]
#include "config.h"
#include "YarrUnicodeProperties.h"
#include "Yarr.h"
#include "YarrPattern.h"
using namespace WTF;
namespace JSC { namespace Yarr {
struct HashIndex {
int16_t value;
int16_t next;
};
struct HashValue {
const char* key;
int index;
};
struct HashTable {
int numberOfValues;
int indexMask;
const HashValue* values;
const HashIndex* index;
ALWAYS_INLINE int entry(WTF::String& key) const
{
int indexEntry = key.impl()->hash() & indexMask;
int valueIndex = index[indexEntry].value;
if (valueIndex == -1)
return -1;
while (true) {
if (WTF::equal(key, values[valueIndex].key))
return values[valueIndex].index;
indexEntry = index[indexEntry].next;
if (indexEntry == -1)
return -1;
valueIndex = index[indexEntry].value;
ASSERT(valueIndex != -1);
};
}
};
#include "UnicodePatternTables.h"
std::optional<BuiltInCharacterClassID> unicodeMatchPropertyValue(WTF::String unicodePropertyName, WTF::String unicodePropertyValue)
{
int propertyIndex = -1;
if (unicodePropertyName == "Script" || unicodePropertyName == "sc")
propertyIndex = scriptHashTable.entry(unicodePropertyValue);
else if (unicodePropertyName == "Script_Extensions" || unicodePropertyName == "scx")
propertyIndex = scriptExtensionHashTable.entry(unicodePropertyValue);
else if (unicodePropertyName == "General_Category" || unicodePropertyName == "gc")
propertyIndex = generalCategoryHashTable.entry(unicodePropertyValue);
if (propertyIndex == -1)
return std::nullopt;
return std::optional<BuiltInCharacterClassID>(static_cast<BuiltInCharacterClassID>(static_cast<int>(BuiltInCharacterClassID::BaseUnicodePropertyID) + propertyIndex));
}
std::optional<BuiltInCharacterClassID> unicodeMatchProperty(WTF::String unicodePropertyValue)
{
int propertyIndex = -1;
propertyIndex = binaryPropertyHashTable.entry(unicodePropertyValue);
if (propertyIndex == -1)
propertyIndex = generalCategoryHashTable.entry(unicodePropertyValue);
if (propertyIndex == -1)
return std::nullopt;
return std::optional<BuiltInCharacterClassID>(static_cast<BuiltInCharacterClassID>(static_cast<int>(BuiltInCharacterClassID::BaseUnicodePropertyID) + propertyIndex));
}
std::unique_ptr<CharacterClass> createUnicodeCharacterClassFor(BuiltInCharacterClassID unicodeClassID)
{
unsigned unicodePropertyIndex = static_cast<unsigned>(unicodeClassID) - static_cast<unsigned>(BuiltInCharacterClassID::BaseUnicodePropertyID);
return createFunctions[unicodePropertyIndex]();
}
} }