WasmModuleInformation.h [plain text]
#pragma once
#if ENABLE(WEBASSEMBLY)
#include "WasmFormat.h"
#include <wtf/BitVector.h>
#include <wtf/Optional.h>
namespace JSC { namespace Wasm {
struct ModuleInformation : public ThreadSafeRefCounted<ModuleInformation> {
ModuleInformation();
ModuleInformation(const ModuleInformation&) = delete;
ModuleInformation(ModuleInformation&&) = delete;
static Ref<ModuleInformation> create()
{
return adoptRef(*new ModuleInformation);
}
JS_EXPORT_PRIVATE ~ModuleInformation();
size_t functionIndexSpaceSize() const { return importFunctionSignatureIndices.size() + internalFunctionSignatureIndices.size(); }
bool isImportedFunctionFromFunctionIndexSpace(size_t functionIndex) const
{
ASSERT(functionIndex < functionIndexSpaceSize());
return functionIndex < importFunctionSignatureIndices.size();
}
SignatureIndex signatureIndexFromFunctionIndexSpace(size_t functionIndex) const
{
return isImportedFunctionFromFunctionIndexSpace(functionIndex)
? importFunctionSignatureIndices[functionIndex]
: internalFunctionSignatureIndices[functionIndex - importFunctionSignatureIndices.size()];
}
uint32_t importFunctionCount() const { return importFunctionSignatureIndices.size(); }
uint32_t internalFunctionCount() const { return internalFunctionSignatureIndices.size(); }
uint32_t memoryCount() const { return memory ? 1 : 0; }
uint32_t tableCount() const { return tables.size(); }
uint32_t elementCount() const { return elements.size(); }
uint32_t dataSegmentsCount() const { return numberOfDataSegments; }
const TableInformation& table(unsigned index) const { return tables[index]; }
const BitVector& referencedFunctions() const { return m_referencedFunctions; }
void addReferencedFunction(unsigned index) const { m_referencedFunctions.set(index); }
bool isDeclaredFunction(uint32_t index) const { return m_declaredFunctions.contains(index); }
void addDeclaredFunction(uint32_t index) { m_declaredFunctions.set(index); }
Vector<Import> imports;
Vector<SignatureIndex> importFunctionSignatureIndices;
Vector<SignatureIndex> internalFunctionSignatureIndices;
Vector<Ref<Signature>> usedSignatures;
MemoryInformation memory;
Vector<FunctionData> functions;
Vector<Export> exports;
Optional<uint32_t> startFunctionIndexSpace;
Vector<Segment::Ptr> data;
Vector<Element> elements;
Vector<TableInformation> tables;
Vector<GlobalInformation> globals;
unsigned firstInternalGlobal { 0 };
uint32_t codeSectionSize { 0 };
Vector<CustomSection> customSections;
Ref<NameSection> nameSection;
uint32_t numberOfDataSegments { 0 };
BitVector m_declaredFunctions;
mutable BitVector m_referencedFunctions;
};
} }
#endif // ENABLE(WEBASSEMBLY)