Assembler Changes

LibraryPath has been removed. Use Path directly from miden_assembly.

Quick Fix

src/assembler.rs

// Before
use miden_assembly::LibraryPath;
let path = LibraryPath::new("miden::account")?;

// After
use miden_assembly::Path;
let path = Path::new("miden::account")?;

---

LibraryPath Removal

Remove LibraryPath; use Path directly from miden_assembly:

src/assembler.rs

- use miden_assembly::LibraryPath;
- let path = LibraryPath::new("miden::account")?;

+ use miden_assembly::Path;
+ let path = Path::new("miden::account")?;

---

Debug Mode Changes

Debug mode is now always enabled; remove toggle calls:

src/assembler.rs

- use miden_assembly::Assembler;
- let assembler = Assembler::new()
-     .with_debug_mode(true)  // No longer needed
-     .build()?;

+ use miden_assembly::Assembler;
+ let assembler = Assembler::new().build()?;
+ // Debug mode is always enabled

Debug mode being always-on simplifies development and has negligible performance impact in production.

---

Compile Function Argument Order

compile_and_statically_link_from_dir argument order changed to (dir, namespace).

src/compiler.rs

- // Before: (namespace, dir)
- let program = assembler.compile_and_statically_link_from_dir(
-     "my_module",
-     "./src/masm",
- )?;

+ // After: (dir, namespace)
+ let program = assembler.compile_and_statically_link_from_dir(
+     "./src/masm",
+     "my_module",
+ )?;

---

Library Compilation

Library compilation API updates to use builder pattern:

src/library.rs

- use miden_assembly::Library;
- let lib = Library::from_dir(path, namespace)?;

+ use miden_assembly::Library;
+ let lib = Library::builder()
+     .from_dir(path)
+     .with_namespace(namespace)
+     .build()?;

---

Assembler Context

Assembler context creation simplified:

src/context.rs

- let ctx = AssemblerContext::new()
-     .with_libraries(&[lib1, lib2])
-     .with_debug_info(true)?;

+ let ctx = AssemblerContext::new()
+     .with_libraries(&[lib1, lib2])?;
+ // Debug info always included

---

Migration Steps

1. Replace all LibraryPath imports with Path
2. Remove with_debug_mode() calls from assembler configuration
3. Swap argument order in compile_and_statically_link_from_dir calls
4. Update library compilation to use builder pattern
5. Remove with_debug_info() calls from context creation

---

Common Errors

Error	Cause	Fix
LibraryPath not found	Removed	Use Path
with_debug_mode not found	Removed	Delete the call
mismatched types in compile_from_dir	Arg order swapped	Swap (dir, namespace)
with_debug_info not found	Removed	Delete the call