sc 0.52.1

• ManagedBufferReadToEnd TypeAbi implementation.

sc 0.52.0, codec 0.20.1

• ManagedBufferReadToEnd type, which flushed a nested data buffer.
• Fixed hex and binary formatters for byte slices.
• Added EI 1.4 and 1.5 configs.
• Dependency upgrades.

sc 0.51.1

• sc-meta upgrade bugfix.

sc 0.51.0, codec 0.20.0, vm 0.9.0, sdk 0.5.0, scenario-format 0.22.3

• Major refactoring of multiversx-sc-meta
  • Crate multiversx-sc-meta split in 2:
    1. multiversx-sc-meta remains the standalone tool. For backwards compatibility, it can still be used in contract meta crates, but a warning will be issued.
    2. multiversx-sc-meta-lib is the contract-only library to contract meta crates.
  • The refactoring came with few code changes, but dependencies were disentangled and cleaned up.
  • Account retrieval tool was merged into sc-meta standalone. Previously little known feature, it enables downloading the full state of an account and formatting it as a mandos set state step. Very useful for generating tests and investigating state.
  • multiversx-sdk was also refactored, especially the gateway proxy.
• A new code report is available in the .mxsc.json build output. The report analyzes the wasm code after build and always offers the following information:
  • imports: what VM hooks are used;
  • eiCheck: if the used imports comply with the environment interface (EI, allowed VM hooks);
  • hasAllocator: is it allocates on the heap;
  • hasPanic: whether it produces Rust panics and formats error messages using the standard Rust formatter (a source of code bloat).
• ManagedDecimal and ManagedDecimalSigned:
  • New types that encapulate a managed BigUint and BigInt respectively, but treat them as base 10 fixed point rational numbers.
  • Two flavors are allowed: the number of decimals is known at compile time (e.g. EGLD always has 18 decimals), or only at runtime.
    • Type ConstDecimals is able to resolve conversions at compile time, reducing code size and making encoding and decoding easier, since the number of decimals does not need to be encoded.
    • Regular usize number of decimals is resolved at runtime.
  • All basic arithmetic operations are implemented for these types, just like for the big integers.
• Implemented logarithms:
  • Natural logarithm ln for ManagedDecimal, BigFloat, and BigInt.
  • Base 2 logarithm log2 for ManagedDecimal.
  • Precision is about 5 decimals, largely irrespective of input.
  • The operation is cheap, ln costs 44980 gas for managed decimals and 153772 for big floats, largely irrespective of input.
• Smart contract code on the front-end:
  • Framework and contract code, together with the Rust VM as a backend, can now be compiled to WebAssembly for front-end, using wasm-bindgen.
  • A few incompatible Rust VM features needed to be made optional for this to work.
• Reverted changes in sc 0.50.6 (diagnostic::on_unimplemented & rustc 1.78 dependency).
• Bugfix: sync_call_readonly can now be used with proxies.

sc 0.50.6

• Temporarily removed dependency to rustc 1.78, to ease transition from older versions. Will be re-enabled in 0.51.0.

sc 0.50.5

• #[storage_mapper_from_address] annotation.
• Added missing equality operator for test addresses (TestAddress, TestSCAddress).

sc 0.50.3

• Dependency update and fix. There was an issue with the zip dependency in sc-meta.

sc 0.50.2

• Unified transaction syntax:
  • Better compilation error messages for malformed transactions;
  • Deprecated methods async_call and async_call_promises, which are kept for backwards compatibility, but causing confusion among developers;
  • Contract upgrade available in tests.
• sc-meta proxy compare option, which checks that proxies are up to date. Useful for CI.
• TypeAbi - removed Unmanaged associated type trait bounds, and implemented it for more types.
• Removed jitter from interactor transaction fetch.
• Fixed an issue in the snippets generator.

sc 0.50.1

• sc-meta all snippets generates unified syntax.
• Proxy generator can reference multi-contract variant.
• Fixes:
  • BoxedBytes - fixed memory leak.
  • ManagedVecItem - allowing larger payloads (up to 128 bytes).

sc 0.50.0, codec 0.19.0, vm 0.8.4, sdk 0.4.1

• Framework now runs on stable Rust. All unstable features were removed. The most important changes enabling this:
  • CodecFrom completely removed, TypeAbiFrom was used instead since 0.49.0.
  • ManagedVecItem payload redesigned.
  • Contract panic message mechanism improved.
• Unified syntax:
  • NotPayable marker type in proxies, which prevents callers to add payment to a non-payable endpoint.