rul

Signed-off-by: xermicus <bigcyrill@hotmail.com>

crates/rul/src/builder.rs

@@ -0,0 +1,80 @@
+//! The revive rust backend builder module.
+
+const CARGO_TOML: &str = r#"
+[package]
+name = "contracts"
+publish = false
+version = "1.0.0"
+edition = "2021"
+
+# Make sure this is not included into the workspace
+[workspace]
+
+# Binary targets are injected dynamically by the build script.
+[[bin]]
+
+# All paths are injected dynamically by the build script.
+[dependencies]
+uapi = { version = "0.7.0", package = 'pallet-revive-uapi', features = ["unstable-hostfn"], default-features = false }
+hex-literal = { version = "0.4.1", default-features = false }
+polkavm-derive = { version = "0.27.0" }
+
+[profile.release]
+opt-level = 3
+lto = true
+codegen-units = 1
+"#;
+
+const HEADER: &str = r#"
+#![no_std]
+#![no_main]
+include!("../panic_handler.rs");
+
+use uapi::{HostFn, HostFnImpl as api, ReturnFlags};
+
+#[panic_handler]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+	// SAFETY: The unimp instruction is guaranteed to trap
+	unsafe {
+		core::arch::asm!("unimp");
+		core::hint::unreachable_unchecked();
+	}
+}
+
+/// The emulated linear EVM heap memory size.
+pub const MEMORY_SIZE: usize = 1024 * 64;
+
+/// The emulated linear EVM heap memory size.
+pub const MEMORY: [u8; MEMORY_SIZE] = [0; MEMORY_SIZE];
+"#;
+
+const EXPORT_FUNCTION: &str = r#"
+#[no_mangle]
+#[polkavm_derive::polkavm_export]
+pub extern "C" fn 
+"#;
+
+fn emit(constructor_code: &str, runtime_code: &str) -> String {
+    let mut buffer = String::from(HEADER);
+    buffer.reserve(
+        constructor_code.len() + runtime_code.len() + HEADER.len() + EXPORT_FUNCTION.len() * 2,
+    );
+
+    buffer.push_str(EXPORT_FUNCTION);
+    buffer.push_str("deploy() {");
+    buffer.push_str(constructor_code);
+    buffer.push_str("\n}");
+
+    buffer.push_str(EXPORT_FUNCTION);
+    buffer.push_str("call() {");
+    buffer.push_str(runtime_code);
+    buffer.push_str("\n}");
+
+    buffer
+}
+
+/// Build a PVM blob.
+pub fn build(constructor_code: &str, runtime_code: &str) -> Vec<u8> {
+    let code = emit(constructor_code, runtime_code);
+    todo!();
+}

crates/rul/src/lib.rs

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+//! The revive rust backend library.
+
+pub mod builder;
+pub mod yul_library;
+

crates/rul/src/yul_library.rs

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+//! The revive rust backend YUL auxilliary library functions module.