Struct TxScriptEngine 

pub struct TxScriptEngine<'a, T: VerifiableTransaction, Reused: SigHashReusedValues> { /* private fields */ }

Implementations

impl<'a, T: VerifiableTransaction, Reused: SigHashReusedValues> TxScriptEngine<'a, T, Reused>

pub fn new(ctx: EngineContext<'a, Reused>, flags: EngineFlags) -> Self

pub fn used_sig_ops(&self) -> u16

Returns the number of signature operations used in script execution.

pub fn used_script_units(&self) -> ScriptUnits

Returns the total script units consumed so far.

pub fn with_opcode_execution_log_buffer(self, buffer: &'a mut dyn Write) -> Self

pub fn stacks(&self) -> ExecutionStacksView<'_>

Returns a read-only view of the execution stacks

pub fn from_transaction_input( tx: &'a T, input: &'a TransactionInput, input_idx: usize, utxo_entry: &'a UtxoEntry, ctx: EngineContext<'a, Reused>, flags: EngineFlags, ) -> Self

Creates a new Script Engine for validating transaction input.

Arguments

• tx - The transaction being validated
• input - The input being validated
• input_idx - Index of the input in the transaction
• utxo_entry - UTXO entry being spent
• reused_values - Reused values for signature hashing
• sig_cache - Cache for signature verification
• kip10_enabled - Whether KIP-10 transaction introspection opcodes are enabled

Panics

• When input_idx >= number of inputs in transaction (malformed input)

Returns

Script engine instance configured for the given input

pub fn from_transaction_input_with_script_units_limit( tx: &'a T, input: &'a TransactionInput, input_idx: usize, utxo_entry: &'a UtxoEntry, ctx: EngineContext<'a, Reused>, flags: EngineFlags, script_units_limit: ScriptUnits, ) -> Self

pub fn from_script( script: &'a [u8], reused_values: &'a Reused, sig_cache: &'a Cache<SigCacheKey, bool>, flags: EngineFlags, ) -> Self

pub fn from_script_with_script_units_limit( script: &'a [u8], reused_values: &'a Reused, sig_cache: &'a Cache<SigCacheKey, bool>, script_units_limit: ScriptUnits, flags: EngineFlags, ) -> Self

pub fn is_executing(&self) -> bool

pub fn execute_opcode( &mut self, opcode: DynOpcodeImplementation<T, Reused>, ) -> Result<(), TxScriptError>

pub fn execute(&mut self) -> Result<(), TxScriptError>

pub fn execute_and_return_stacks(self) -> Result<ExecutionStacks, TxScriptError>

Executes the scripts without the final error condition checks and returns both stacks in raw vector form.

Trait Implementations

impl<'a, T: VerifiableTransaction, Reused: SigHashReusedValues> Deref for TxScriptEngine<'a, T, Reused>

type Target = EngineContext<'a, Reused>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.