1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
//! The output of a compiled project

use crate::{
    artifacts::{
        contract::{CompactContractBytecode, CompactContractRef, Contract},
        Error, Severity,
    },
    buildinfo::RawBuildInfo,
    info::ContractInfoRef,
    sources::{VersionedSourceFile, VersionedSourceFiles},
    ArtifactId, ArtifactOutput, Artifacts, CompilerOutput, ConfigurableArtifacts, SolcIoError,
};
use contracts::{VersionedContract, VersionedContracts};
use semver::Version;
use serde::{Deserialize, Serialize};
use std::{collections::BTreeMap, fmt, path::Path};
use tracing::trace;
use yansi::Paint;

pub mod contracts;
pub mod info;
pub mod sources;

/// Contains a mixture of already compiled/cached artifacts and the input set of sources that still
/// need to be compiled.
#[derive(Debug, Clone, PartialEq, Default)]
pub struct ProjectCompileOutput<T: ArtifactOutput = ConfigurableArtifacts> {
    /// contains the aggregated `CompilerOutput`
    pub(crate) compiler_output: AggregatedCompilerOutput,
    /// all artifact files from `output` that were freshly compiled and written
    pub(crate) compiled_artifacts: Artifacts<T::Artifact>,
    /// All artifacts that were read from cache
    pub(crate) cached_artifacts: Artifacts<T::Artifact>,
    /// errors that should be omitted
    pub(crate) ignored_error_codes: Vec<u64>,
    /// set minimum level of severity that is treated as an error
    pub(crate) compiler_severity_filter: Severity,
}

impl<T: ArtifactOutput> ProjectCompileOutput<T> {
    /// Converts all `\\` separators in _all_ paths to `/`
    pub fn slash_paths(&mut self) {
        self.compiler_output.slash_paths();
        self.compiled_artifacts.slash_paths();
        self.cached_artifacts.slash_paths();
    }

    /// Convenience function fo [`Self::slash_paths()`]
    pub fn with_slashed_paths(mut self) -> Self {
        self.slash_paths();
        self
    }

    /// All artifacts together with their contract file name and name `<file name>:<name>`.
    ///
    /// This returns a chained iterator of both cached and recompiled contract artifacts.
    ///
    /// Borrowed version of [`Self::into_artifacts`].
    pub fn artifact_ids(&self) -> impl Iterator<Item = (ArtifactId, &T::Artifact)> + '_ {
        let Self { cached_artifacts, compiled_artifacts, .. } = self;
        cached_artifacts.artifacts::<T>().chain(compiled_artifacts.artifacts::<T>())
    }

    /// All artifacts together with their contract file name and name `<file name>:<name>`
    ///
    /// This returns a chained iterator of both cached and recompiled contract artifacts
    ///
    /// # Example
    ///
    /// ```no_run
    /// use std::collections::btree_map::BTreeMap;
    /// use ethers_solc::ConfigurableContractArtifact;
    /// use ethers_solc::{ArtifactId, Project};
    ///
    /// let project = Project::builder().build().unwrap();
    /// let contracts: BTreeMap<ArtifactId, ConfigurableContractArtifact> = project.compile().unwrap().into_artifacts().collect();
    /// ```
    pub fn into_artifacts(self) -> impl Iterator<Item = (ArtifactId, T::Artifact)> {
        let Self { cached_artifacts, compiled_artifacts, .. } = self;
        cached_artifacts.into_artifacts::<T>().chain(compiled_artifacts.into_artifacts::<T>())
    }

    /// This returns a chained iterator of both cached and recompiled contract artifacts that yields
    /// the contract name and the corresponding artifact
    ///
    /// # Example
    ///
    /// ```no_run
    /// use std::collections::btree_map::BTreeMap;
    /// use ethers_solc::ConfigurableContractArtifact;
    /// use ethers_solc::Project;
    ///
    /// let project = Project::builder().build().unwrap();
    /// let artifacts: BTreeMap<String, &ConfigurableContractArtifact> = project.compile().unwrap().artifacts().collect();
    /// ```
    pub fn artifacts(&self) -> impl Iterator<Item = (String, &T::Artifact)> {
        self.versioned_artifacts().map(|(name, (artifact, _))| (name, artifact))
    }

    /// This returns a chained iterator of both cached and recompiled contract artifacts that yields
    /// the contract name and the corresponding artifact with its version
    ///
    /// # Example
    ///
    /// ```no_run
    /// use std::collections::btree_map::BTreeMap;
    /// use semver::Version;
    /// use ethers_solc::ConfigurableContractArtifact;
    /// use ethers_solc::Project;
    ///
    /// let project = Project::builder().build().unwrap();
    /// let artifacts: BTreeMap<String, (&ConfigurableContractArtifact, &Version)> = project.compile().unwrap().versioned_artifacts().collect();
    /// ```
    pub fn versioned_artifacts(&self) -> impl Iterator<Item = (String, (&T::Artifact, &Version))> {
        self.cached_artifacts
            .artifact_files()
            .chain(self.compiled_artifacts.artifact_files())
            .filter_map(|artifact| {
                T::contract_name(&artifact.file)
                    .map(|name| (name, (&artifact.artifact, &artifact.version)))
            })
    }

    /// All artifacts together with their contract file and name as tuple `(file, contract
    /// name, artifact)`
    ///
    /// This returns a chained iterator of both cached and recompiled contract artifacts
    ///
    /// Borrowed version of [`Self::into_artifacts_with_files`].
    ///
    /// **NOTE** the `file` will be returned as is, see also
    /// [`Self::with_stripped_file_prefixes()`].
    pub fn artifacts_with_files(
        &self,
    ) -> impl Iterator<Item = (&String, &String, &T::Artifact)> + '_ {
        let Self { cached_artifacts, compiled_artifacts, .. } = self;
        cached_artifacts.artifacts_with_files().chain(compiled_artifacts.artifacts_with_files())
    }

    /// All artifacts together with their contract file and name as tuple `(file, contract
    /// name, artifact)`
    ///
    /// This returns a chained iterator of both cached and recompiled contract artifacts
    ///
    /// # Example
    ///
    /// ```no_run
    /// use std::collections::btree_map::BTreeMap;
    /// use ethers_solc::{ConfigurableContractArtifact, Project};
    ///
    /// let project = Project::builder().build().unwrap();
    /// let contracts: Vec<(String, String, ConfigurableContractArtifact)> = project.compile().unwrap().into_artifacts_with_files().collect();
    /// ```
    ///
    /// **NOTE** the `file` will be returned as is, see also [`Self::with_stripped_file_prefixes()`]
    pub fn into_artifacts_with_files(self) -> impl Iterator<Item = (String, String, T::Artifact)> {
        let Self { cached_artifacts, compiled_artifacts, .. } = self;
        cached_artifacts
            .into_artifacts_with_files()
            .chain(compiled_artifacts.into_artifacts_with_files())
    }

    /// All artifacts together with their ID and the sources of the project.
    ///
    /// Note: this only returns the `SourceFiles` for freshly compiled contracts because, if not
    /// included in the `Artifact` itself (see
    /// [`crate::ConfigurableContractArtifact::source_file()`]), is only available via the solc
    /// `CompilerOutput`
    pub fn into_artifacts_with_sources(
        self,
    ) -> (BTreeMap<ArtifactId, T::Artifact>, VersionedSourceFiles) {
        let Self { cached_artifacts, compiled_artifacts, compiler_output, .. } = self;

        (
            cached_artifacts
                .into_artifacts::<T>()
                .chain(compiled_artifacts.into_artifacts::<T>())
                .collect(),
            compiler_output.sources,
        )
    }

    /// Strips the given prefix from all artifact file paths to make them relative to the given
    /// `base` argument
    ///
    /// # Example
    ///
    /// Make all artifact files relative to the project's root directory
    ///
    /// ```no_run
    /// use ethers_solc::Project;
    ///
    /// let project = Project::builder().build().unwrap();
    /// let output = project.compile().unwrap().with_stripped_file_prefixes(project.root());
    /// ```
    pub fn with_stripped_file_prefixes(mut self, base: impl AsRef<Path>) -> Self {
        let base = base.as_ref();
        self.cached_artifacts = self.cached_artifacts.into_stripped_file_prefixes(base);
        self.compiled_artifacts = self.compiled_artifacts.into_stripped_file_prefixes(base);
        self.compiler_output.strip_prefix_all(base);
        self
    }

    /// Get the (merged) solc compiler output
    /// ```no_run
    /// use std::collections::btree_map::BTreeMap;
    /// use ethers_solc::artifacts::contract::Contract;
    /// use ethers_solc::Project;
    ///
    /// let project = Project::builder().build().unwrap();
    /// let contracts: BTreeMap<String, Contract> =
    ///     project.compile().unwrap().output().contracts_into_iter().collect();
    /// ```
    pub fn output(self) -> AggregatedCompilerOutput {
        self.compiler_output
    }

    /// Returns whether this type has a compiler output.
    pub fn has_compiled_contracts(&self) -> bool {
        self.compiler_output.is_empty()
    }

    /// Returns whether this type does not contain compiled contracts.
    pub fn is_unchanged(&self) -> bool {
        self.compiler_output.is_unchanged()
    }

    /// Returns whether any errors were emitted by the compiler.
    pub fn has_compiler_errors(&self) -> bool {
        self.compiler_output.has_error(&self.ignored_error_codes, &self.compiler_severity_filter)
    }

    /// Returns whether any warnings were emitted by the compiler.
    pub fn has_compiler_warnings(&self) -> bool {
        self.compiler_output.has_warning(&self.ignored_error_codes)
    }

    /// Panics if any errors were emitted by the compiler.
    #[track_caller]
    pub fn succeeded(self) -> Self {
        self.assert_success();
        self
    }

    /// Panics if any errors were emitted by the compiler.
    #[track_caller]
    pub fn assert_success(&self) {
        assert!(!self.has_compiler_errors(), "\n{self}\n");
    }

    /// Returns the set of `Artifacts` that were cached and got reused during
    /// [`crate::Project::compile()`]
    pub fn cached_artifacts(&self) -> &Artifacts<T::Artifact> {
        &self.cached_artifacts
    }

    /// Returns the set of `Artifacts` that were compiled with `solc` in
    /// [`crate::Project::compile()`]
    pub fn compiled_artifacts(&self) -> &Artifacts<T::Artifact> {
        &self.compiled_artifacts
    }

    /// Returns a `BTreeMap` that maps the compiler version used during
    /// [`crate::Project::compile()`] to a Vector of tuples containing the contract name and the
    /// `Contract`
    pub fn compiled_contracts_by_compiler_version(
        &self,
    ) -> BTreeMap<Version, Vec<(String, Contract)>> {
        let mut contracts: BTreeMap<_, Vec<_>> = BTreeMap::new();
        let versioned_contracts = &self.compiler_output.contracts;
        for (_, name, contract, version) in versioned_contracts.contracts_with_files_and_version() {
            contracts
                .entry(version.to_owned())
                .or_default()
                .push((name.to_string(), contract.clone()));
        }
        contracts
    }

    /// Removes the contract with matching path and name using the `<path>:<contractname>` pattern
    /// where `path` is optional.
    ///
    /// If the `path` segment is `None`, then the first matching `Contract` is returned, see
    /// [Self::remove_first]
    ///
    /// # Example
    ///
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// use ethers_solc::info::ContractInfo;
    ///
    /// # fn demo(project: Project) {
    /// let  output = project.compile().unwrap();
    /// let info = ContractInfo::new("src/Greeter.sol:Greeter");
    /// let contract = output.find_contract(&info).unwrap();
    /// # }
    /// ```
    pub fn find_contract<'a>(&self, info: impl Into<ContractInfoRef<'a>>) -> Option<&T::Artifact> {
        let ContractInfoRef { path, name } = info.into();
        if let Some(path) = path {
            self.find(path, name)
        } else {
            self.find_first(name)
        }
    }

    /// Finds the artifact with matching path and name
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// # fn demo(project: Project) {
    /// let output = project.compile().unwrap();
    /// let contract = output.find("src/Greeter.sol", "Greeter").unwrap();
    /// # }
    /// ```
    pub fn find(&self, path: impl AsRef<str>, contract: impl AsRef<str>) -> Option<&T::Artifact> {
        let contract_path = path.as_ref();
        let contract_name = contract.as_ref();
        if let artifact @ Some(_) = self.compiled_artifacts.find(contract_path, contract_name) {
            return artifact
        }
        self.cached_artifacts.find(contract_path, contract_name)
    }

    /// Finds the first contract with the given name
    pub fn find_first(&self, contract_name: impl AsRef<str>) -> Option<&T::Artifact> {
        let contract_name = contract_name.as_ref();
        if let artifact @ Some(_) = self.compiled_artifacts.find_first(contract_name) {
            return artifact
        }
        self.cached_artifacts.find_first(contract_name)
    }

    /// Finds the artifact with matching path and name
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// # fn demo(project: Project) {
    /// let output = project.compile().unwrap();
    /// let contract = output.find("src/Greeter.sol", "Greeter").unwrap();
    /// # }
    /// ```
    pub fn remove(
        &mut self,
        path: impl AsRef<str>,
        contract: impl AsRef<str>,
    ) -> Option<T::Artifact> {
        let contract_path = path.as_ref();
        let contract_name = contract.as_ref();
        if let artifact @ Some(_) = self.compiled_artifacts.remove(contract_path, contract_name) {
            return artifact
        }
        self.cached_artifacts.remove(contract_path, contract_name)
    }

    /// Removes the _first_ contract with the given name from the set
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// # fn demo(project: Project) {
    /// let mut output = project.compile().unwrap();
    /// let contract = output.remove_first("Greeter").unwrap();
    /// # }
    /// ```
    pub fn remove_first(&mut self, contract_name: impl AsRef<str>) -> Option<T::Artifact> {
        let contract_name = contract_name.as_ref();
        if let artifact @ Some(_) = self.compiled_artifacts.remove_first(contract_name) {
            return artifact
        }
        self.cached_artifacts.remove_first(contract_name)
    }

    /// Removes the contract with matching path and name using the `<path>:<contractname>` pattern
    /// where `path` is optional.
    ///
    /// If the `path` segment is `None`, then the first matching `Contract` is returned, see
    /// [Self::remove_first]
    ///
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// use ethers_solc::info::ContractInfo;
    /// # fn demo(project: Project) {
    /// let mut output = project.compile().unwrap();
    /// let info = ContractInfo::new("src/Greeter.sol:Greeter");
    /// let contract = output.remove_contract(&info).unwrap();
    /// # }
    /// ```
    pub fn remove_contract<'a>(
        &mut self,
        info: impl Into<ContractInfoRef<'a>>,
    ) -> Option<T::Artifact> {
        let ContractInfoRef { path, name } = info.into();
        if let Some(path) = path {
            self.remove(path, name)
        } else {
            self.remove_first(name)
        }
    }
}

impl ProjectCompileOutput<ConfigurableArtifacts> {
    /// A helper functions that extracts the underlying [`CompactContractBytecode`] from the
    /// [`crate::ConfigurableContractArtifact`]
    ///
    /// # Example
    ///
    /// ```no_run
    /// use std::collections::btree_map::BTreeMap;
    /// use ethers_solc::artifacts::contract::CompactContractBytecode;
    /// use ethers_solc::{ArtifactId, Project};
    /// use ethers_solc::contracts::ArtifactContracts;
    ///
    /// let project = Project::builder().build().unwrap();
    /// let contracts: ArtifactContracts = project.compile().unwrap().into_contract_bytecodes().collect();
    /// ```
    pub fn into_contract_bytecodes(
        self,
    ) -> impl Iterator<Item = (ArtifactId, CompactContractBytecode)> {
        self.into_artifacts()
            .map(|(artifact_id, artifact)| (artifact_id, artifact.into_contract_bytecode()))
    }
}

impl<T: ArtifactOutput> fmt::Display for ProjectCompileOutput<T> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        if self.compiler_output.is_unchanged() {
            f.write_str("Nothing to compile")
        } else {
            self.compiler_output
                .diagnostics(&self.ignored_error_codes, self.compiler_severity_filter)
                .fmt(f)
        }
    }
}

/// The aggregated output of (multiple) compile jobs
///
/// This is effectively a solc version aware `CompilerOutput`
#[derive(Clone, Debug, Default, PartialEq, Serialize, Deserialize)]
pub struct AggregatedCompilerOutput {
    /// all errors from all `CompilerOutput`
    pub errors: Vec<Error>,
    /// All source files combined with the solc version used to compile them
    pub sources: VersionedSourceFiles,
    /// All compiled contracts combined with the solc version used to compile them
    pub contracts: VersionedContracts,
    // All the `BuildInfo`s of solc invocations.
    pub build_infos: BTreeMap<Version, RawBuildInfo>,
}

impl AggregatedCompilerOutput {
    /// Converts all `\\` separators in _all_ paths to `/`
    pub fn slash_paths(&mut self) {
        self.sources.slash_paths();
        self.contracts.slash_paths();
    }

    /// Whether the output contains a compiler error
    pub fn has_error(
        &self,
        ignored_error_codes: &[u64],
        compiler_severity_filter: &Severity,
    ) -> bool {
        self.errors.iter().any(|err| {
            if compiler_severity_filter.ge(&err.severity) {
                if compiler_severity_filter.is_warning() {
                    return self.has_warning(ignored_error_codes)
                }
                return true
            }
            false
        })
    }

    /// Whether the output contains a compiler warning
    pub fn has_warning(&self, ignored_error_codes: &[u64]) -> bool {
        self.errors.iter().any(|err| {
            if err.severity.is_warning() {
                err.error_code.as_ref().map_or(false, |code| !ignored_error_codes.contains(code))
            } else {
                false
            }
        })
    }

    pub fn diagnostics<'a>(
        &'a self,
        ignored_error_codes: &'a [u64],
        compiler_severity_filter: Severity,
    ) -> OutputDiagnostics {
        OutputDiagnostics { compiler_output: self, ignored_error_codes, compiler_severity_filter }
    }

    pub fn is_empty(&self) -> bool {
        self.contracts.is_empty()
    }

    pub fn is_unchanged(&self) -> bool {
        self.contracts.is_empty() && self.errors.is_empty()
    }

    pub fn extend_all<I>(&mut self, out: I)
    where
        I: IntoIterator<Item = (Version, CompilerOutput)>,
    {
        for (v, o) in out {
            self.extend(v, o)
        }
    }

    /// adds a new `CompilerOutput` to the aggregated output
    pub fn extend(&mut self, version: Version, output: CompilerOutput) {
        let CompilerOutput { errors, sources, contracts } = output;
        self.errors.extend(errors);

        for (path, source_file) in sources {
            let sources = self.sources.as_mut().entry(path).or_default();
            sources.push(VersionedSourceFile { source_file, version: version.clone() });
        }

        for (file_name, new_contracts) in contracts {
            let contracts = self.contracts.as_mut().entry(file_name).or_default();
            for (contract_name, contract) in new_contracts {
                let versioned = contracts.entry(contract_name).or_default();
                versioned.push(VersionedContract { contract, version: version.clone() });
            }
        }
    }

    /// Creates all `BuildInfo` files in the given `build_info_dir`
    ///
    /// There can be multiple `BuildInfo`, since we support multiple versions.
    ///
    /// The created files have the md5 hash `{_format,solcVersion,solcLongVersion,input}` as their
    /// file name
    pub fn write_build_infos(&self, build_info_dir: impl AsRef<Path>) -> Result<(), SolcIoError> {
        if self.build_infos.is_empty() {
            return Ok(())
        }
        let build_info_dir = build_info_dir.as_ref();
        std::fs::create_dir_all(build_info_dir)
            .map_err(|err| SolcIoError::new(err, build_info_dir))?;
        for (version, build_info) in &self.build_infos {
            trace!("writing build info file for solc {}", version);
            let file_name = format!("{}.json", build_info.id);
            let file = build_info_dir.join(file_name);
            std::fs::write(&file, &build_info.build_info)
                .map_err(|err| SolcIoError::new(err, file))?;
        }
        Ok(())
    }

    /// Finds the _first_ contract with the given name
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// # fn demo(project: Project) {
    /// let output = project.compile().unwrap().output();
    /// let contract = output.find_first("Greeter").unwrap();
    /// # }
    /// ```
    pub fn find_first(&self, contract: impl AsRef<str>) -> Option<CompactContractRef> {
        self.contracts.find_first(contract)
    }

    /// Removes the _first_ contract with the given name from the set
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// # fn demo(project: Project) {
    /// let mut output = project.compile().unwrap().output();
    /// let contract = output.remove_first("Greeter").unwrap();
    /// # }
    /// ```
    pub fn remove_first(&mut self, contract: impl AsRef<str>) -> Option<Contract> {
        self.contracts.remove_first(contract)
    }

    /// Removes the contract with matching path and name
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// # fn demo(project: Project) {
    /// let mut output = project.compile().unwrap().output();
    /// let contract = output.remove("src/Greeter.sol", "Greeter").unwrap();
    /// # }
    /// ```
    pub fn remove(&mut self, path: impl AsRef<str>, contract: impl AsRef<str>) -> Option<Contract> {
        self.contracts.remove(path, contract)
    }

    /// Removes the contract with matching path and name using the `<path>:<contractname>` pattern
    /// where `path` is optional.
    ///
    /// If the `path` segment is `None`, then the first matching `Contract` is returned, see
    /// [Self::remove_first]
    ///
    ///
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// use ethers_solc::info::ContractInfo;
    /// # fn demo(project: Project) {
    /// let mut output = project.compile().unwrap().output();
    /// let info = ContractInfo::new("src/Greeter.sol:Greeter");
    /// let contract = output.remove_contract(&info).unwrap();
    /// # }
    /// ```
    pub fn remove_contract<'a>(
        &mut self,
        info: impl Into<ContractInfoRef<'a>>,
    ) -> Option<Contract> {
        let ContractInfoRef { path, name } = info.into();
        if let Some(path) = path {
            self.remove(path, name)
        } else {
            self.remove_first(name)
        }
    }

    /// Iterate over all contracts and their names
    pub fn contracts_iter(&self) -> impl Iterator<Item = (&String, &Contract)> {
        self.contracts.contracts()
    }

    /// Iterate over all contracts and their names
    pub fn contracts_into_iter(self) -> impl Iterator<Item = (String, Contract)> {
        self.contracts.into_contracts()
    }

    /// Returns an iterator over (`file`, `name`, `Contract`)
    pub fn contracts_with_files_iter(&self) -> impl Iterator<Item = (&String, &String, &Contract)> {
        self.contracts.contracts_with_files()
    }

    /// Returns an iterator over (`file`, `name`, `Contract`)
    pub fn contracts_with_files_into_iter(
        self,
    ) -> impl Iterator<Item = (String, String, Contract)> {
        self.contracts.into_contracts_with_files()
    }

    /// Returns an iterator over (`file`, `name`, `Contract`, `Version`)
    pub fn contracts_with_files_and_version_iter(
        &self,
    ) -> impl Iterator<Item = (&String, &String, &Contract, &Version)> {
        self.contracts.contracts_with_files_and_version()
    }

    /// Returns an iterator over (`file`, `name`, `Contract`, `Version`)
    pub fn contracts_with_files_and_version_into_iter(
        self,
    ) -> impl Iterator<Item = (String, String, Contract, Version)> {
        self.contracts.into_contracts_with_files_and_version()
    }

    /// Given the contract file's path and the contract's name, tries to return the contract's
    /// bytecode, runtime bytecode, and abi
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// use ethers_solc::artifacts::*;
    /// # fn demo(project: Project) {
    /// let output = project.compile().unwrap().output();
    /// let contract = output.get("src/Greeter.sol", "Greeter").unwrap();
    /// # }
    /// ```
    pub fn get(
        &self,
        path: impl AsRef<str>,
        contract: impl AsRef<str>,
    ) -> Option<CompactContractRef> {
        self.contracts.get(path, contract)
    }

    /// Returns the output's source files and contracts separately, wrapped in helper types that
    /// provide several helper methods
    ///
    /// # Example
    ///
    /// ```
    /// use ethers_solc::Project;
    /// # fn demo(project: Project) {
    /// let output = project.compile().unwrap().output();
    /// let (sources, contracts) = output.split();
    /// # }
    /// ```
    pub fn split(self) -> (VersionedSourceFiles, VersionedContracts) {
        (self.sources, self.contracts)
    }

    /// Joins all file path with `root`
    pub fn join_all(&mut self, root: impl AsRef<Path>) -> &mut Self {
        let root = root.as_ref();
        self.contracts.join_all(root);
        self.sources.join_all(root);
        self
    }

    /// Strips the given prefix from all file paths to make them relative to the given
    /// `base` argument.
    ///
    /// Convenience method for [Self::strip_prefix_all()] that consumes the type.
    ///
    /// # Example
    ///
    /// Make all sources and contracts relative to the project's root directory
    ///
    /// ```no_run
    /// use ethers_solc::Project;
    ///
    /// let project = Project::builder().build().unwrap();
    /// let output = project.compile().unwrap().output().with_stripped_file_prefixes(project.root());
    /// ```
    pub fn with_stripped_file_prefixes(mut self, base: impl AsRef<Path>) -> Self {
        let base = base.as_ref();
        self.contracts.strip_prefix_all(base);
        self.sources.strip_prefix_all(base);
        self
    }

    /// Removes `base` from all contract paths
    pub fn strip_prefix_all(&mut self, base: impl AsRef<Path>) -> &mut Self {
        let base = base.as_ref();
        self.contracts.strip_prefix_all(base);
        self.sources.strip_prefix_all(base);
        self
    }
}

/// Helper type to implement display for solc errors
#[derive(Clone, Debug)]
pub struct OutputDiagnostics<'a> {
    /// output of the compiled project
    compiler_output: &'a AggregatedCompilerOutput,
    /// the error codes to ignore
    ignored_error_codes: &'a [u64],
    /// set minimum level of severity that is treated as an error
    compiler_severity_filter: Severity,
}

impl<'a> OutputDiagnostics<'a> {
    /// Returns true if there is at least one error of high severity
    pub fn has_error(&self) -> bool {
        self.compiler_output.has_error(self.ignored_error_codes, &self.compiler_severity_filter)
    }

    /// Returns true if there is at least one warning
    pub fn has_warning(&self) -> bool {
        self.compiler_output.has_warning(self.ignored_error_codes)
    }

    /// Returns true if the contract is a expected to be a test
    fn is_test<T: AsRef<str>>(&self, contract_path: T) -> bool {
        if contract_path.as_ref().ends_with(".t.sol") {
            return true
        }

        self.compiler_output.find_first(&contract_path).map_or(false, |contract| {
            contract.abi.map_or(false, |abi| abi.functions.contains_key("IS_TEST"))
        })
    }
}

impl<'a> fmt::Display for OutputDiagnostics<'a> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.write_str("Compiler run ")?;
        if self.has_error() {
            Paint::red("failed:")
        } else if self.has_warning() {
            Paint::yellow("successful with warnings:")
        } else {
            Paint::green("successful!")
        }
        .fmt(f)?;

        for err in &self.compiler_output.errors {
            let mut ignored = false;
            if err.severity.is_warning() {
                if let Some(code) = err.error_code {
                    if let Some(source_location) = &err.source_location {
                        // we ignore spdx and contract size warnings in test
                        // files. if we are looking at one of these warnings
                        // from a test file we skip
                        ignored =
                            self.is_test(&source_location.file) && (code == 1878 || code == 5574);
                    }

                    ignored |= self.ignored_error_codes.contains(&code);
                }
            }

            if !ignored {
                f.write_str("\n")?;
                err.fmt(f)?;
            }
        }

        Ok(())
    }
}