revm_handler/
item_or_result.rs

1use crate::evm::FrameTr;
2
3/// Represents either an item or a result.
4#[derive(Clone, Debug)]
5pub enum ItemOrResult<ITEM, RES> {
6    /// Contains an item that needs further processing.
7    Item(ITEM),
8    /// Contains a final result.
9    Result(RES),
10}
11
12impl<ITEM, RES> ItemOrResult<ITEM, RES> {
13    /// Maps the item variant using the provided function, leaving results unchanged.
14    pub fn map_frame<OITEM>(self, f: impl FnOnce(ITEM) -> OITEM) -> ItemOrResult<OITEM, RES> {
15        match self {
16            ItemOrResult::Item(item) => ItemOrResult::Item(f(item)),
17            ItemOrResult::Result(result) => ItemOrResult::Result(result),
18        }
19    }
20
21    /// Maps the result variant using the provided function, leaving items unchanged.
22    pub fn map_result<ORES>(self, f: impl FnOnce(RES) -> ORES) -> ItemOrResult<ITEM, ORES> {
23        match self {
24            ItemOrResult::Item(item) => ItemOrResult::Item(item),
25            ItemOrResult::Result(result) => ItemOrResult::Result(f(result)),
26        }
27    }
28}
29
30impl<ITEM, RES> ItemOrResult<ITEM, RES> {
31    /// Returns true if this is a result variant.
32    pub fn is_result(&self) -> bool {
33        matches!(self, ItemOrResult::Result(_))
34    }
35
36    /// Returns true if this is an item variant.
37    pub fn is_item(&self) -> bool {
38        matches!(self, ItemOrResult::Item(_))
39    }
40}
41
42/// Type alias for frame initialization or result.
43pub type FrameInitOrResult<FRAME> =
44    ItemOrResult<<FRAME as FrameTr>::FrameInit, <FRAME as FrameTr>::FrameResult>;
revm_handler/item_or_result.rs

revm_handler/
item_or_result.rs
