Emerge Yul recompiler (#1)

Provide a modified (and incomplete) version of ZKSync zksolc that can compile the most basic contracts
2026-06-15 13:51:12 +00:00 · 2024-03-12 12:06:02 +01:00
parent d238d8f39e
commit cffa14a4d2
247 changed files with 35357 additions and 4905 deletions
@@ -0,0 +1,91 @@
+//!
+//! The Yul IR lexer tests.
+//!
+
+use crate::yul::lexer::error::Error;
+use crate::yul::lexer::token::lexeme::Lexeme;
+use crate::yul::lexer::token::location::Location;
+use crate::yul::lexer::Lexer;
+
+#[test]
+fn default() {
+    let input = r#"
+object "Test" {
+    code {
+        {
+            /*
+                The deploy code.
+            */
+            mstore(64, 128)
+            if callvalue() { revert(0, 0) }
+            let _1 := datasize("Test_deployed")
+            codecopy(0, dataoffset("Test_deployed"), _1)
+            return(0, _1)
+        }
+    }
+    object "Test_deployed" {
+        code {
+            {
+                /*
+                    The runtime code.
+                */
+                mstore(64, 128)
+                if iszero(lt(calldatasize(), 4))
+                {
+                    let _1 := 0
+                    switch shr(224, calldataload(_1))
+                    case 0x3df4ddf4 {
+                        if callvalue() { revert(_1, _1) }
+                        if slt(add(calldatasize(), not(3)), _1) { revert(_1, _1) }
+                        let memPos := allocate_memory(_1)
+                        mstore(memPos, 0x2a)
+                        return(memPos, 32)
+                    }
+                    case 0x5a8ac02d {
+                        if callvalue() { revert(_1, _1) }
+                        if slt(add(calldatasize(), not(3)), _1) { revert(_1, _1) }
+                        let memPos_1 := allocate_memory(_1)
+                        return(memPos_1, sub(abi_encode_uint256(memPos_1, 0x63), memPos_1))
+                    }
+                }
+                revert(0, 0)
+            }
+            function abi_encode_uint256(headStart, value0) -> tail
+            {
+                tail := add(headStart, 32)
+                mstore(headStart, value0)
+            }
+            function allocate_memory(size) -> memPtr
+            {
+                memPtr := mload(64)
+                let newFreePtr := add(memPtr, and(add(size, 31), not(31)))
+                if or(gt(newFreePtr, 0xffffffffffffffff)#, lt(newFreePtr, memPtr))
+                {
+                    mstore(0, shl(224, 0x4e487b71))
+                    mstore(4, 0x41)
+                    revert(0, 0x24)
+                }
+                mstore(64, newFreePtr)
+            }
+        }
+    }
+}
+    "#;
+
+    let mut lexer = Lexer::new(input.to_owned());
+    loop {
+        match lexer.next() {
+            Ok(token) => assert_ne!(token.lexeme, Lexeme::EndOfFile),
+            Err(error) => {
+                assert_eq!(
+                    error,
+                    Error::InvalidLexeme {
+                        location: Location::new(51, 57),
+                        sequence: "#,".to_owned(),
+                    }
+                );
+                break;
+            }
+        }
+    }
+}