1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617//! Contract execution related types1819#[cfg(not(feature = "std"))]20use alloc::string::{String, ToString};21use evm_core::{ExitError, ExitFatal};22#[cfg(feature = "std")]23use std::string::{String, ToString};2425use crate::Weight;2627/// Execution error, should be convertible between EVM and Substrate.28#[derive(Debug, Clone)]29pub enum Error {30 /// Non-fatal contract error occured31 Revert(String),32 /// EVM fatal error33 Fatal(ExitFatal),34 /// EVM normal error35 Error(ExitError),36}3738impl<E> From<E> for Error39where40 E: ToString,41{42 fn from(e: E) -> Self {43 Self::Revert(e.to_string())44 }45}4647/// To be used in [`crate::solidity_interface`] implementation.48pub type Result<T> = core::result::Result<T, Error>;4950/// Static information collected from [`crate::weight`].51pub struct DispatchInfo {52 /// Statically predicted call weight53 pub weight: Weight,54}5556impl From<Weight> for DispatchInfo {57 fn from(weight: Weight) -> Self {58 Self { weight }59 }60}61impl From<()> for DispatchInfo {62 fn from(_: ()) -> Self {63 Self { weight: 0 }64 }65}6667/// Weight information that is only available post dispatch.68/// Note: This can only be used to reduce the weight or fee, not increase it.69#[derive(Default, Clone)]70pub struct PostDispatchInfo {71 /// Actual weight consumed by call72 actual_weight: Option<Weight>,73}7475impl PostDispatchInfo {76 /// Calculate amount to be returned back to user77 pub fn calc_unspent(&self, info: &DispatchInfo) -> Weight {78 info.weight - self.calc_actual_weight(info)79 }8081 /// Calculate actual consumed weight, saturating to weight reported82 /// pre-dispatch83 pub fn calc_actual_weight(&self, info: &DispatchInfo) -> Weight {84 if let Some(actual_weight) = self.actual_weight {85 actual_weight.min(info.weight)86 } else {87 info.weight88 }89 }90}9192/// Wrapper for PostDispatchInfo and any user-provided data93#[derive(Clone)]94pub struct WithPostDispatchInfo<T> {95 /// User provided data96 pub data: T,97 /// Info known after dispatch98 pub post_info: PostDispatchInfo,99}100101impl<T> From<T> for WithPostDispatchInfo<T> {102 fn from(data: T) -> Self {103 Self {104 data,105 post_info: Default::default(),106 }107 }108}109110/// Return type of items in [`crate::solidity_interface`] definition111pub type ResultWithPostInfo<T> =112 core::result::Result<WithPostDispatchInfo<T>, WithPostDispatchInfo<Error>>;difftreelog
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crates/evm-coder/src/execution.rs3.0 KiBsourcehistory