Enum ValueExpr

pub enum ValueExpr<T: ExtParam> {
    Const(T),
    CurrInputValue,
    Input(IdxExpr),
    Output(IdxExpr),
}

Enum representing operations with transaction values. Every variant of this enum pushes a 32 byte value + 1 byte prefix on stack top.. These operations also support confidential values. This will abort when - Supplied index is out of bounds.

Variants

Const(T)

A constant Value

CurrInputValue

Value under the current executing input INSPECTCURRENTINPUTINDEX INPSECTINPUTVALUE

Input(IdxExpr)

Value(possibly confidential) at the given input index i INPSECTINPUTVALUE

Output(IdxExpr)

Value(possibly confidential) at the given output index i INPSECTOUTPUTVALUE

Implementations

impl ValueExpr<CovExtArgs>

pub fn push_to_builder(&self, builder: Builder) -> Builder

Push this script to builder

pub fn eval(&self, env: &TxEnv<'_, '_>) -> Result<Value, EvalError>

Evaluate this expression

pub fn from_tokens(tokens: &[Tk<'_>], end_pos: usize) -> Option<(Self, usize)>

Returns (self, start_pos) parsed reversed form tokens starting with index end_pos Expression is parsed from tokens[start:end_pos]

Trait Implementations

impl<T: ExtParam> ArgFromStr for ValueExpr<T>

fn arg_from_str(s: &str, parent: &str, pos: usize) -> Result<Self, Error>

Parse an argument from s given context of parent and argument position

impl<T: Clone + ExtParam> Clone for ValueExpr<T>

fn clone(&self) -> ValueExpr<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: ExtParam> Debug for ValueExpr<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: ExtParam> Display for ValueExpr<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Hash + ExtParam> Hash for ValueExpr<T>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: Ord + ExtParam> Ord for ValueExpr<T>

fn cmp(&self, other: &ValueExpr<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: PartialEq + ExtParam> PartialEq for ValueExpr<T>

fn eq(&self, other: &ValueExpr<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: PartialOrd + ExtParam> PartialOrd for ValueExpr<T>

fn partial_cmp(&self, other: &ValueExpr<T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: Eq + ExtParam> Eq for ValueExpr<T>

impl<T: ExtParam> StructuralPartialEq for ValueExpr<T>