Macro declare_program 

declare_program!() { /* proc-macro */ }

Declare a program module from an Anchor IDL JSON file.

Looks for idls/{name}.json by walking up from CARGO_MANIFEST_DIR.

Example

anchor_parser::declare_program!(my_program);

This generates a module my_program containing:

• ID constant (Pubkey)
• types module (struct/enum/alias definitions)
• accounts module (account types with discriminators + fetch)
• events module (event types with from_log)
• instructions module (instruction builders → Instruction)
• constants module