Trait rustpython_vm::function::FromArgs

pub trait FromArgs: Sized {
    fn from_args(
        vm: &VirtualMachine, 
        args: &mut PyFuncArgs
    ) -> Result<Self, ArgumentError>;

    fn arity() -> RangeInclusive<usize> { ... }
}

Implemented by any type that can be accepted as a parameter to a built-in function.

Required methods

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

Extracts this item from the next argument(s).

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Provided methods

fn arity() -> RangeInclusive<usize>

The range of positional arguments permitted by the function signature.

Returns an empty range if not applicable.

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Implementations on Foreign Types

impl FromArgs for ()

fn from_args(
    _vm: &VirtualMachine,
    _args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<A> FromArgs for (A,) where
    A: FromArgs, 

fn arity() -> RangeInclusive<usize>

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<A, B> FromArgs for (A, B) where
    A: FromArgs,
    B: FromArgs, 

fn arity() -> RangeInclusive<usize>

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<A, B, C> FromArgs for (A, B, C) where
    A: FromArgs,
    B: FromArgs,
    C: FromArgs, 

fn arity() -> RangeInclusive<usize>

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<A, B, C, D> FromArgs for (A, B, C, D) where
    A: FromArgs,
    B: FromArgs,
    C: FromArgs,
    D: FromArgs, 

fn arity() -> RangeInclusive<usize>

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<A, B, C, D, E> FromArgs for (A, B, C, D, E) where
    A: FromArgs,
    B: FromArgs,
    C: FromArgs,
    D: FromArgs,
    E: FromArgs, 

fn arity() -> RangeInclusive<usize>

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<A, B, C, D, E, F> FromArgs for (A, B, C, D, E, F) where
    A: FromArgs,
    B: FromArgs,
    C: FromArgs,
    D: FromArgs,
    E: FromArgs,
    F: FromArgs, 

fn arity() -> RangeInclusive<usize>

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

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Implementors

impl FromArgs for PyFuncArgs

fn from_args(
    _vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl FromArgs for ByteInnerExpandtabsOptions

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl FromArgs for ByteInnerFindOptions

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl FromArgs for ByteInnerNewOptions

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl FromArgs for ByteInnerPaddingOptions

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl FromArgs for ByteInnerSplitOptions

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl FromArgs for ByteInnerSplitlinesOptions

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl FromArgs for ByteInnerTranslateOptions

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<T> FromArgs for OptionalArg<T> where
    T: TryFromObject, 

fn arity() -> RangeInclusive<usize>

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<T> FromArgs for Args<T> where
    T: TryFromObject, 

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<T> FromArgs for KwArgs<T> where
    T: TryFromObject, 

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

impl<T> FromArgs for T where
    T: TryFromObject, 

fn arity() -> RangeInclusive<usize>

fn from_args(
    vm: &VirtualMachine,
    args: &mut PyFuncArgs
) -> Result<Self, ArgumentError>

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