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use crate::types::{ScriptGroup, ScriptGroupType};
use ckb_error::{prelude::*, Error, ErrorKind};
use ckb_types::core::{Cycle, ScriptHashType};
use ckb_types::packed::Script;
use std::{error::Error as StdError, fmt};
#[derive(Error, Debug, PartialEq, Eq, Clone)]
pub enum ScriptError {
#[error("InvalidCodeHash")]
InvalidCodeHash,
#[error("ExceededMaximumCycles: expect cycles <= {0}")]
ExceededMaximumCycles(Cycle),
#[error("CyclesOverflow: lhs {0} rhs {1}")]
CyclesOverflow(Cycle, Cycle),
#[error("MultipleMatches")]
MultipleMatches,
#[error("ValidationFailure: see the error code {1} in the page https://nervosnetwork.github.io/ckb-script-error-codes/{0}.html#{1}")]
ValidationFailure(String, i8),
#[error("Known bugs encountered in output {1}: {0}")]
EncounteredKnownBugs(String, usize),
#[error("InvalidScriptHashType: {0}")]
InvalidScriptHashType(String),
#[error("Invalid VM Version: {0}")]
InvalidVmVersion(u8),
#[error("VM Internal Error: {0}")]
VMInternalError(String),
}
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum TransactionScriptErrorSource {
Inputs(usize, ScriptGroupType),
Outputs(usize, ScriptGroupType),
Unknown,
}
impl TransactionScriptErrorSource {
fn from_script_group(script_group: &ScriptGroup) -> Self {
if let Some(n) = script_group.input_indices.first() {
TransactionScriptErrorSource::Inputs(*n, script_group.group_type)
} else if let Some(n) = script_group.output_indices.first() {
TransactionScriptErrorSource::Outputs(*n, script_group.group_type)
} else {
TransactionScriptErrorSource::Unknown
}
}
}
impl fmt::Display for TransactionScriptErrorSource {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
TransactionScriptErrorSource::Inputs(n, field) => write!(f, "Inputs[{}].{}", n, field),
TransactionScriptErrorSource::Outputs(n, field) => {
write!(f, "Outputs[{}].{}", n, field)
}
TransactionScriptErrorSource::Unknown => write!(f, "Unknown"),
}
}
}
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct TransactionScriptError {
source: TransactionScriptErrorSource,
cause: ScriptError,
}
impl StdError for TransactionScriptError {}
impl fmt::Display for TransactionScriptError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"TransactionScriptError {{ source: {}, cause: {} }}",
self.source, self.cause
)
}
}
impl ScriptError {
pub fn validation_failure(script: &Script, exit_code: i8) -> ScriptError {
let url_path = match ScriptHashType::try_from(script.hash_type()).expect("checked data") {
ScriptHashType::Data | ScriptHashType::Data1 => {
format!("by-data-hash/{:x}", script.code_hash())
}
ScriptHashType::Type => {
format!("by-type-hash/{:x}", script.code_hash())
}
};
ScriptError::ValidationFailure(url_path, exit_code)
}
pub fn source(self, script_group: &ScriptGroup) -> TransactionScriptError {
TransactionScriptError {
source: TransactionScriptErrorSource::from_script_group(script_group),
cause: self,
}
}
pub fn input_lock_script(self, index: usize) -> TransactionScriptError {
TransactionScriptError {
source: TransactionScriptErrorSource::Inputs(index, ScriptGroupType::Lock),
cause: self,
}
}
pub fn input_type_script(self, index: usize) -> TransactionScriptError {
TransactionScriptError {
source: TransactionScriptErrorSource::Inputs(index, ScriptGroupType::Type),
cause: self,
}
}
pub fn output_type_script(self, index: usize) -> TransactionScriptError {
TransactionScriptError {
source: TransactionScriptErrorSource::Outputs(index, ScriptGroupType::Type),
cause: self,
}
}
pub fn unknown_source(self) -> TransactionScriptError {
TransactionScriptError {
source: TransactionScriptErrorSource::Unknown,
cause: self,
}
}
}
impl From<TransactionScriptError> for Error {
fn from(error: TransactionScriptError) -> Self {
ErrorKind::Script.because(error)
}
}