Module gclient::ext::sp_runtime::traits

Primitives for the runtime modules.

Macros

• parameter_types
  Create new implementations of the Get trait.

Structs

• AccountIdLookup
  A lookup implementation returning the AccountId from a MultiAddress.
• AppendZerosInput
  Input that adds infinite number of zero after wrapped input.
• BadOrigin
  An error type that indicates that the origin is invalid.
• BlakeTwo256
  Blake2-256 Hash implementation.
• CheckedReduceBy
  A TryMorph implementation to reduce a scalar by a particular amount, checking for underflow.
• ConstBool
  Const getter for a basic type.
• ConstI8
  Const getter for a basic type.
• ConstI16
  Const getter for a basic type.
• ConstI32
  Const getter for a basic type.
• ConstI64
  Const getter for a basic type.
• ConstI128
  Const getter for a basic type.
• ConstU8
  Const getter for a basic type.
• ConstU16
  Const getter for a basic type.
• ConstU32
  Const getter for a basic type.
• ConstU64
  Const getter for a basic type.
• ConstU128
  Const getter for a basic type.
• ConvertInto
  A structure that performs standard conversion using the standard Rust conversion traits.
• ConvertToValue
  Adapter which turns a Get implementation into a Convert implementation which always returns in the same value no matter the input.
• GetDefault
  Implement Get by returning Default for any type that implements Default.
• Identity
  A structure that performs identity conversion.
• IdentityLookup
  A lookup implementation returning the input value.
• Keccak256
  Keccak-256 Hash implementation.
• LookupError
  An error that indicates that a lookup failed.
• MorphInto
  Implementation of Morph which converts between types using Into.
• MorphWithUpperLimit
  A TryMorph implementation to enforce an upper limit for a result of the outer morphed type.
• PhantomData
  Zero-sized type used to mark things that “act like” they own a T.
• ReduceBy
  Mutator which reduces a scalar by a particular amount.
• Replace
  Morpher to disregard the source value and replace with another.
• ReplaceWithDefault
  Morpher to disregard the source value and replace with the default of V.
• SignedExtensionMetadata
  Information about a SignedExtension for the runtime metadata.
• TakeFirst
  Implementation of Morph to retrieve just the first element of a tuple.
• TrailingZeroInput
  Input that adds infinite number of zero after wrapped input.
• TryConvertInto
  A structure that performs standard conversion using the standard Rust conversion traits.
• TryMorphInto
  Implementation of TryMorph which attempts to convert between types using TryInto.

Traits

• AccountIdConversion
  This type can be converted into and possibly from an AccountId (which itself is generic).
• AppVerify
  Means of signature verification of an application key.
• Applyable
  An “executable” piece of information, used by the standard Substrate Executive in order to enact a piece of extrinsic information by marshalling and dispatching to a named function call.
• AtLeast32Bit
  A meta trait for arithmetic.
• AtLeast32BitUnsigned
  A meta trait for arithmetic. Same as AtLeast32Bit, but also bounded to be unsigned.
• BlindCheckable
  A “checkable” piece of information, used by the standard Substrate Executive in order to check the validity of a piece of extrinsic information, usually by verifying the signature. Implement for pieces of information that don’t require additional context in order to be checked.
• Block
  Something which fulfills the abstract idea of a Substrate block. It has types for Extrinsic pieces of information as well as a Header.
• BlockIdTo
  Something that can convert a BlockId to a number or a hash.
• BlockNumber
  Super trait with all the attributes for a block number.
• BlockNumberProvider
  Get current block number
• Bounded
  Numbers which have upper and lower bounds
• CheckEqual
  Something that can be checked for equality and printed out to a debug channel if bad.
• Checkable
  Extract the digest type for a block. A “checkable” piece of information, used by the standard Substrate Executive in order to check the validity of a piece of extrinsic information, usually by verifying the signature. Implement for pieces of information that require some additional context Context in order to be checked.
• CheckedAdd
  Performs addition that returns None instead of wrapping around on overflow.
• CheckedConversion
  Convenience type to work around the highly unergonomic syntax needed to invoke the functions of overloaded generic traits, in this case TryFrom and TryInto.
• CheckedDiv
  Performs division that returns None instead of panicking on division by zero and instead of wrapping around on underflow and overflow.
• CheckedMul
  Performs multiplication that returns None instead of wrapping around on underflow or overflow.
• CheckedShl
  Performs a left shift that returns None on shifts larger than or equal to the type width.
• CheckedShr
  Performs a right shift that returns None on shifts larger than or equal to the type width.
• CheckedSub
  Performs subtraction that returns None instead of wrapping around on underflow.
• Clear
  Trait for things that can be clear (have no bits set). For numeric types, essentially the same as Zero.
• Convert
  Infallible conversion trait. Generic over both source and destination types.
• ConvertBack
  Reversing infallible conversion trait. Generic over both source and destination types.
• Debug
  ? formatting.
• Dispatchable
  A lazy call (module function and argument values) that can be executed via its dispatch method.
• Ensure
• EnsureAdd
  Performs addition that returns ArithmeticError instead of wrapping around on overflow.
• EnsureAddAssign
  Performs self addition that returns ArithmeticError instead of wrapping around on overflow.
• EnsureDiv
  Performs division that returns ArithmeticError instead of wrapping around on overflow.
• EnsureDivAssign
  Performs self division that returns ArithmeticError instead of wrapping around on overflow.
• EnsureFixedPointNumber
  Extends FixedPointNumber with the Ensure family functions.
• EnsureFrom
  Similar to TryFrom but returning an ArithmeticError error.
• EnsureInto
  Similar to TryInto but returning an ArithmeticError error.
• EnsureMul
  Performs multiplication that returns ArithmeticError instead of wrapping around on overflow.
• EnsureMulAssign
  Performs self multiplication that returns ArithmeticError instead of wrapping around on overflow.
• EnsureOp
  Meta trait that supports all immutable arithmetic Ensure* operations
• EnsureOpAssign
  Meta trait that supports all assigned arithmetic Ensure* operations
• EnsureSub
  Performs subtraction that returns ArithmeticError instead of wrapping around on underflow.
• EnsureSubAssign
  Performs self subtraction that returns ArithmeticError instead of wrapping around on underflow.
• Extrinsic
  Something that acts like an Extrinsic.
• ExtrinsicMetadata
  Implementor is an Extrinsic and provides metadata about this extrinsic.
• Get
  A trait for querying a single value from a type.
• GetNodeBlockType
  A marker trait for something that knows the type of the node block.
• GetRuntimeBlockType
  A marker trait for something that knows the type of the runtime block.
• Hash
  Abstraction around hashing
• HashOutput
  Super trait with all the attributes for a hashing output.
• Header
  Something which fulfills the abstract idea of a Substrate header. It has types for a Number, a Hash and a Hashing. It provides access to an extrinsics_root, state_root and parent_hash, as well as a digest and a block number.
• IdentifyAccount
  Some type that is able to be collapsed into an account ID. It is not possible to recreate the original value from the account ID.
• IntegerSquareRoot
  A trait implementing integer square root.
• IsMember
  Determine if a MemberId is a valid member.
• Lazy
  A lazy value.
• Lookup
  Means of changing one type into another in a manner dependent on the source type.
• MaybeConvert
  Fallible conversion trait returning an Option. Generic over both source and destination types.
• MaybeConvertBack
  Reversing fallible conversion trait returning an Option. Generic over both source and destination types.
• MaybeDisplay
  A type that implements Display when in std environment.
• MaybeEquivalence
  Definition for a bi-directional, fallible conversion between two types.
• MaybeFromStr
  A type that implements FromStr when in std environment.
• MaybeHash
  A type that implements Hash when in std environment.
• MaybeSerialize
  A type that implements Serialize when in std environment or serde feature is activated.
• MaybeSerializeDeserialize
  A type that implements Serialize, DeserializeOwned and Debug when in std environment or serde feature is activated.
• Member
  A type that can be used in runtime structures.
• Morph
  Extensible conversion trait. Generic over only source type, with destination type being associated.
• One
  Defines a multiplicative identity element for Self.
• OpaqueKeys
  Opaque data type that may be destructured into a series of raw byte slices (which represent individual keys).
• Printable
  Trait for things which can be printed from the runtime.
• SaturatedConversion
  Convenience type to work around the highly unergonomic syntax needed to invoke the functions of overloaded generic traits, in this case SaturatedFrom and SaturatedInto.
• Saturating
  Saturating arithmetic operations, returning maximum or minimum values instead of overflowing.
• Scale
  Multiply and divide by a number that isn’t necessarily the same type. Basically just the same as Mul and Div except it can be used for all basic numeric types.
• SignaturePayload
  Something that acts like a SignaturePayload of an Extrinsic.
• SignedExtension
  Means by which a transaction may be extended. This type embodies both the data and the logic that should be additionally associated with the transaction. It should be plain old data.
• SimpleBitOps
  A meta trait for all bit ops.
• StaticLookup
  Means of changing one type into another in a manner dependent on the source type. This variant is different to Lookup in that it doesn’t (can cannot) require any context.
• TryCollect
  Try and collect into a collection C.
• TryConvert
  Fallible conversion trait which returns the argument in the case of being unable to convert. Generic over both source and destination types.
• TryConvertBack
  Reversing fallible conversion trait which returns the argument in the case of being unable to convert back. Generic over both source and destination types.
• TryMorph
  Extensible conversion trait. Generic over only source type, with destination type being associated.
• TypedGet
  A trait for querying a single value from a type defined in the trait.
• UniqueSaturatedFrom
  Just like From except that if the source value is too big to fit into the destination type then it’ll saturate the destination.
• UniqueSaturatedInto
  Just like Into except that if the source value is too big to fit into the destination type then it’ll saturate the destination.
• ValidateUnsigned
  Provide validation for unsigned extrinsics.
• Verify
  Means of signature verification.
• Zero
  Defines an additive identity element for Self.

Functions

• checked_pow
  Raises a value to the power of exp, returning None if an overflow occurred.
• ensure_pow
  Raises a value to the power of exp, returning ArithmeticError if an overflow occurred.

Type Aliases

• DispatchInfoOf
  Shortcut to reference the Info type of a Dispatchable.
• HashingFor
  Extract the hashing type for a block.
• NumberFor
  Extract the number type for a block.
• PostDispatchInfoOf
  Shortcut to reference the PostInfo type of a Dispatchable.

Derive Macros

• Debug
  Derive macro generating an impl of the trait Debug.