Generate Solidity compatible metadata (#1930)

* Generate Solidity compatible metadata

* Update changelog

* Fix tests

* Add test

* Add support for structured primitive types

* Use default constructor

* Output copy

* Add build info

* Clarify NatSpec user docs

* Update type mapping

* Fix test

* Refactor metadata artifacts representation

* Fix test

* Add more build info

* Update Solidity metadata representation

* Fix tests

* Update type mapping

* Notes on unit-only enums and doc comments for function params

* ink dependency updates

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [Unreleased]
 
 ### Added
+- Add option to generate Solidity compatible metadata (via `cargo contract build ---metadata <ink|solidity>`) - [1930](https://github.com/use-ink/cargo-contract/pull/1930)
 - Deny overflowing (and lossy) integer type cast operations - [#1895](https://github.com/use-ink/cargo-contract/pull/1895)
 
 ### Changed

crates/build/Cargo.toml

@@ -28,6 +28,7 @@ rustc_version = "0.4.1"
 scale = { package = "parity-scale-codec", version = "3.6.12", features = [
     "derive",
 ] }
+scale-info = "2.11.6"
 toml = "0.8.19"
 tracing = "0.1.41"
 semver = { version = "1.0.25", features = ["serde"] }
@@ -42,10 +43,13 @@ tokio = { version = "1.43.0", features = ["macros", "rt-multi-thread"] }
 tokio-stream = "0.1.17"
 bollard = "0.18.1"
 crossterm = "0.28.1"
+itertools = "0.13.0"
+alloy-json-abi = "0.8.20"
 
 polkavm-linker = "0.18.0"
 
 contract-metadata = { version = "6.0.0-alpha", path = "../metadata" }
+ink_metadata = { git = "https://github.com/use-ink/ink", branch = "master" }
 sha3 = "0.11.0-pre.4"
 
 [target.'cfg(unix)'.dependencies]

crates/build/README.md

@@ -12,6 +12,7 @@ use contract_build::{
     BuildArtifacts,
     BuildMode,
     Features,
+    MetadataSpec,
     Network,
     OutputType,
     UnstableFlags,
@@ -34,6 +35,7 @@ let args = contract_build::ExecuteArgs {
     output_type: OutputType::Json,
     skip_clippy_and_linting: false,
     image: ImageVariant::Default,
+    metadata_spec: MetadataSpec::Ink,
 };
 
 contract_build::execute(args);

crates/build/src/args.rs

@@ -26,7 +26,7 @@ use std::{
     path::Path,
 };
 
-#[derive(Default, Clone, Debug, Args)]
+#[derive(Default, Clone, Copy, Debug, Args)]
 pub struct VerbosityFlags {
     /// No output printed to stdout
     #[clap(long)]
@@ -272,3 +272,36 @@ impl Features {
         }
     }
 }
+
+/// Specification to use for contract metadata.
+#[derive(
+    Debug,
+    Default,
+    Clone,
+    Copy,
+    PartialEq,
+    Eq,
+    clap::ValueEnum,
+    serde::Serialize,
+    serde::Deserialize,
+)]
+#[serde(rename_all = "lowercase")]
+pub enum MetadataSpec {
+    /// ink!
+    #[clap(name = "ink")]
+    #[serde(rename = "ink!")]
+    #[default]
+    Ink,
+    /// Solidity
+    #[clap(name = "solidity")]
+    Solidity,
+}
+
+impl fmt::Display for MetadataSpec {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::Ink => write!(f, "ink"),
+            Self::Solidity => write!(f, "solidity"),
+        }
+    }
+}

crates/build/src/crate_metadata.rs

@@ -55,6 +55,7 @@ pub struct CrateMetadata {
     pub user: Option<Map<String, Value>>,
     pub target_directory: PathBuf,
     pub target_file_path: PathBuf,
+    pub metadata_spec_path: PathBuf,
 }
 
 impl CrateMetadata {
@@ -144,6 +145,7 @@ impl CrateMetadata {
             homepage,
             user,
             target_file_path: target_directory.join(".target").into(),
+            metadata_spec_path: target_directory.join(".metadata_spec").into(),
             target_directory: target_directory.into(),
         };
         Ok(crate_metadata)