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revert: use simple change filter again (#1008) 

* chore: rollback dirty detection

* docs: caching docs
This commit is contained in:
Matthias Seitz 2022-03-11 17:43:48 +01:00 committed by GitHub
parent bbb1ce31a7
commit e5dbeb6b28
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2 changed files with 50 additions and 52 deletions
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69
ethers-solc/src/cache.rs
View File

@ -29,7 +29,7 @@ const ETHERS_FORMAT_VERSION: &str = "ethers-rs-sol-cache-2";
/// The file name of the default cache file
pub const SOLIDITY_FILES_CACHE_FILENAME: &str = "solidity-files-cache.json";
/// A hardhat compatible cache representation
/// A multi version cache file
#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize)]
pub struct SolFilesCache {
#[serde(rename = "_format")]
@ -593,62 +593,35 @@ impl<'a, T: ArtifactOutput> ArtifactsCacheInner<'a, T> {
}
}
/// Returns only dirty sources that:
/// Returns only those sources that
/// - are new
/// - were changed
/// - their imports were changed
/// - their artifact is missing
/// This also includes their respective imports
fn filter(&mut self, sources: Sources, version: &Version) -> Sources {
self.fill_hashes(&sources);
let mut imports_of_dirty = HashSet::new();
// separates all source files that fit the criteria (dirty) from those that don't (clean)
let (mut dirty_sources, clean_sources) = sources
sources
.into_iter()
.map(|(file, source)| self.filter_source(file, source, version))
.fold(
(Sources::default(), Vec::new()),
|(mut dirty_sources, mut clean_sources), source| {
if source.dirty {
// mark all files that are imported by a dirty file
imports_of_dirty.extend(self.edges.all_imported_nodes(source.idx));
dirty_sources.insert(source.file, source.source);
} else {
clean_sources.push(source);
}
(dirty_sources, clean_sources)
},
);
for clean_source in clean_sources {
let FilteredSource { file, source, idx, .. } = clean_source;
if imports_of_dirty.contains(&idx) {
// file is imported by a dirty file
dirty_sources.insert(file, source);
} else {
self.insert_filtered_source(file, source, version.clone());
}
}
// track dirty sources internally
for (file, source) in dirty_sources.iter() {
self.insert_new_cache_entry(file, source, version.clone());
}
dirty_sources
.filter_map(|(file, source)| self.requires_solc(file, source, version))
.collect()
}
/// Returns the state of the given source file.
fn filter_source(&self, file: PathBuf, source: Source, version: &Version) -> FilteredSource {
let idx = self.edges.node_id(&file);
/// Returns `Some` if the file _needs_ to be compiled and `None` if the artifact can be reu-used
fn requires_solc(
&mut self,
file: PathBuf,
source: Source,
version: &Version,
) -> Option<(PathBuf, Source)> {
if !self.is_dirty(&file, version) &&
self.edges.imports(&file).iter().all(|file| !self.is_dirty(file, version))
{
FilteredSource { file, source, idx, dirty: false }
self.insert_filtered_source(file, source, version.clone());
None
} else {
FilteredSource { file, source, idx, dirty: true }
self.insert_new_cache_entry(&file, &source, version.clone());
Some((file, source))
}
}
@ -701,14 +674,6 @@ impl<'a, T: ArtifactOutput> ArtifactsCacheInner<'a, T> {
}
}
/// Helper type to represent the state of a source file
struct FilteredSource {
file: PathBuf,
source: Source,
idx: usize,
dirty: bool,
}
/// Abstraction over configured caching which can be either non-existent or an already loaded cache
#[allow(clippy::large_enum_variant)]
#[derive(Debug)]

33
ethers-solc/src/compile/project.rs
View File

@ -73,6 +73,33 @@
//! file in the VFS under `dapp-bin/library/math.sol`. If the file is not available there, the
//! source unit name will be passed to the Host Filesystem Loader, which will then look in
//! `/project/dapp-bin/library/iterable_mapping.sol`
//!
//!
//! ### Caching and Change detection
//!
//! If caching is enabled in the [Project](crate::Project) a cache file will be created upon a
//! successful solc build. The [cache file](crate::SolFilesCache) stores metadata for all the files
//! that were provided to solc.
//! For every file the cache file contains a dedicated [cache
//! entry](crate::CacheEntry), which represents the state of the file. A solidity file can contain
//! several contracts, for every contract a separate [artifact](crate::Artifact) is emitted.
//! Therefor the entry also tracks all artifacts emitted by a file. A solidity file can also be
//! compiled with several solc versions.
//!
//! For example in `A(<=0.8.10) imports C(>0.4.0)` and
//! `B(0.8.11) imports C(>0.4.0)`, both `A` and `B` import `C` but there's no solc version that's
//! compatible with `A` and `B`, in which case two sets are compiled: [`A`, `C`] and [`B`, `C`].
//! This is reflected in the cache entry which tracks the file's artifacts by version.
//!
//! The cache makes it possible to detect changes during recompilation, so that only the changed,
//! dirty, files need to be passed to solc. A file will be considered as dirty if:
//! - the file is new, not included in the existing cache
//! - the file was modified since the last compiler run, detected by comparing content hashes
//! - any of the imported files is dirty
//! - the file's artifacts don't exist, were deleted.
//!
//! Recompiling a project with cache enabled detects all files that meet these criteria and provides
//! solc with only these dirty files instead of the entire source set.
use crate::{
artifact_output::Artifacts,
@ -283,7 +310,13 @@ impl CompilerSources {
sources
.into_iter()
.map(|(solc, (version, sources))| {
tracing::trace!("Filtering {} sources for {}", sources.len(), version);
let sources = cache.filter(sources, &version);
tracing::trace!(
"Detected {} dirty sources {:?}",
sources.len(),
sources.keys()
);
(solc, (version, sources))
})
.collect()