Struct ProtocolHelpers 

pub struct ProtocolHelpers;

Shared stateless helpers used across all protocol adapters.

Implementations

impl ProtocolHelpers

pub fn lookup_event_type( name: &str, mapping: &[(&'static str, EventType)], ) -> Option<EventType>

Looks up an EventType by name from a static mapping table.

pub fn parse_accounts(accounts_json: &Value) -> Result<Vec<AccountInfo>, Error>

Deserializes a JSON array of accounts into AccountInfo structs.

pub fn find_signer(accounts: &[AccountInfo]) -> Option<&str>

Returns the pubkey of the first signer in the account list.

pub fn find_account_by_name<'a>( accounts: &'a [AccountInfo], name: &str, ) -> Option<&'a AccountInfo>

Finds an account by its IDL-derived name.

pub fn contains_known_variant(fields: &Value, known_names: &[&str]) -> bool

Returns true if the JSON object’s keys contain any of the known_names.

pub fn checked_u64_to_i64(value: u64, field: &str) -> Result<i64, Error>

Converts u64 to i64, returning an error if the value exceeds i64::MAX.

pub fn optional_u64_to_i64(value: u64) -> Option<i64>

Converts u64 to i64 for optional fields. Returns None if the value exceeds i64::MAX (e.g. u64::MAX sentinel for “no limit”).

pub fn checked_u16_to_i16(value: u16, field: &str) -> Result<i16, Error>

Converts u16 to i16, returning an error if the value exceeds i16::MAX.