Struct Runtime 

pub struct Runtime { /* private fields */ }

Compiles JMESPath expressions and manages registered functions.

Implementations

impl Runtime

pub fn new() -> Runtime

Creates a new Runtime with no functions registered.

pub fn strict() -> Runtime

Creates a strict-mode runtime with only the 26 spec functions.

pub fn builder() -> RuntimeBuilder

Creates a RuntimeBuilder for selective function registration.

pub fn compile<'a>( &'a self, expression: &str, ) -> Result<Expression<'a>, JmespathError>

Creates a new JMESPath expression from an expression string.

pub fn register_function(&mut self, name: &str, f: Box<dyn Function>)

Adds a new function to the runtime.

pub fn deregister_function(&mut self, name: &str) -> Option<Box<dyn Function>>

Removes a function from the runtime.

pub fn get_function<'a>(&'a self, name: &str) -> Option<&'a dyn Function>

Gets a function by name from the runtime.

pub fn function_names(&self) -> impl Iterator<Item = &str>

Returns an iterator over all registered function names.

pub fn register_builtin_functions(&mut self)

Registers all 26 built-in JMESPath functions.

Trait Implementations

impl Default for Runtime

fn default() -> Runtime

Returns the “default value” for a type.