Type¶

Entities for represent values or objects used within WasmVM

Types out of WebAssembly specification (extended) are denoted as [ext]

Fundamental types¶

Represent basic values or date references

using WasmVM::i32_t = int32_t¶: 32-bit signed integer

using WasmVM::i64_t = int64_t¶: 64-bit signed integer

using WasmVM::f32_t = float¶: 32-bit (single precision) floating-point number

using WasmVM::f64_t = double¶: 64-bit (double precision) floating-point number

using WasmVM::funcref_t = std::optional<index_t>¶: Nullable reference of function

using WasmVM::externref_t = void*¶: Nullable reference of external objects

using WasmVM::i8_t = int8_t¶: [ext] 8-bit signed integer

using WasmVM::u8_t = uint8_t¶: [ext] 8-bit unsigned integer

using WasmVM::i16_t = int16_t¶: [ext] 16-bit signed integer

using WasmVM::u16_t = uint16_t¶: [ext] 16-bit unsigned integer

using WasmVM::u32_t = uint32_t¶: [ext] 32-bit unsigned integer

using WasmVM::u64_t = uint64_t¶: [ext] 64-bit unsigned integer

using WasmVM::byte_t = std::byte¶: [ext] Single byte

using WasmVM::index_t = u32_t ¶: [ext] Index of objects

using WasmVM::offset_t = u64_t ¶: [ext] Offset of objects

using WasmVM::align_t = uint8_t¶: [ext] Memory alignment

Constants¶

constexpr u64_t WasmVM::page_size = 65536¶: Memory page size

constexpr index_t WasmVM::index_npos = -1¶: [ext] Undefined (non-existing) index

Enumerations¶

enum WasmVM::ValueType¶

enumerator i32¶: Denote i32_t value

enumerator i64¶: Denote i64_t value

enumerator f32¶: Denote f32_t value

enumerator f64¶: Denote f64_t value

enumerator funcref¶: Denote funcref_t value

enumerator externref¶: Denote externref_t value

enum WasmVM::RefType¶

enumerator funcref¶: Denote function reference value

enumerator externref¶: Denote external object reference value

Object types¶

using WasmVM::Value = std::variant<i32_t, i64_t, f32_t, f64_t, funcref_t, externref_t>¶: General type of value

using WasmVM::Ref = std::variant<funcref_t, externref_t>¶: Reference type

struct WasmVM::Limits¶

Limits of ranged objects or values

offset_t min¶: Minimum value

std::optional<offset_t> max¶: [Optional] Maximum value

struct WasmVM::FuncType¶

Declarational type (signature) of function

std::vector<ValueType> params¶: Value types of function parameters

std::vector<ValueType> results¶: Value types of function results (return values)

using WasmVM::MemType = Limits ¶: Declarational type (signature) of memory

struct WasmVM::TableType¶

Declarational type (signature) of table

Limits Limits¶: Limits of table

RefType reftype¶: Specify the reference type of table elements

struct WasmVM::GlobalType¶

Declarational type (signature) of global

enum Mut¶

Declarational type for denoting mutability of the global

enumerator constant¶: The global value is immutable

enumerator variable¶: The global value is variable

Mut mut¶: Specify the mutability

ValueType type¶: Specify the type of global value

struct WasmVM::ExternVal¶

Declarational type (signature) of external values or objects

enum ExternType¶

enumerator Func¶: Indicate the external value is function

enumerator Mem¶: Indicate the external value is memory

enumerator Table¶: Indicate the external value is table

enumerator Global¶: Indicate the external value is global

ExternType type¶

index_t addr¶: Specify the type of global value