ic-platform-macros

Implementation support for Platform's optional cdk feature. This maintained Apache-2.0 generator derives from IC CDK 0.20.3 release revision 624606f7fd1ecd6668e9608594946486aec29167; its complete original license remains. It implements no executor or codec and requires no upstream change.

The default runtime path is ::ic_platform::cdk; a parsed crate = "module::path" override supports renamed dependencies. Every query/update explicitly supplies decode_with and encode_with (or manual_reply); even unit RPCs run their explicit decoder. Lifecycle argument decoding is explicit. Wire owns controlled application encoding and framing, including public endpoints called by third parties. Consumers own identities, guards and budgets. Explicit hooks do not prove Wire conformance: consumers must qualify their generated bindings and wire bytes. No implicit Candid endpoint codec, dummy service registration, Candid path option or service-export macro is retained. The no-op hidden option is retired in 0.5; remove it from declarations and generators. Options are parsed directly with Syn: string literals for names/paths, boolean literals or bare flags for manual_reply/composite, ordered repeated guard options, and no duplicate single-value options. String-encoded booleans are rejected. composite is query-only; lifecycle hooks cannot select manual_reply. Generated bindings use positional names and mixed-site hygiene so they do not capture handler names or user-supplied codec paths. Generated standard-library types use absolute paths and do not depend on the consumer's prelude imports. Native build symbols encode the full IC export name as UTF-8 hexadecimal with an __ic_export_ prefix, avoiding punctuation collisions across host object formats. Wasm exports retain the original IC names. Native symbols are build scaffolding, not an IC endpoint or a supported native invocation interface. Raw Rust identifiers are supported: fn r#match defaults to endpoint name match. Explicit name strings remain verbatim.

Export names, lifecycle restrictions, guard order, tuple/unit custom-encoder arity and sync/async/query contexts retain the reviewed generator behavior. Async entries use Platform's preserved protected-spawn wrapper and the sole registry executor. IC_CDK_DEBUG retains opt-in expansion diagnostics. The support package and facade require coordinated next-minor publication.