Struct rhai::Engine

pub struct Engine {
    pub id: Option<String>,
    // some fields omitted
}

Rhai main scripting engine.

use rhai::Engine;

let engine = Engine::new();

let result = engine.eval::<i64>("40 + 2")?;

println!("Answer: {}", result);  // prints 42

Currently, Engine is neither Send nor Sync. Use the sync feature to make it Send + Sync.

Fields

id: Option<String>

A unique ID identifying this scripting Engine.

Implementations

impl Engine

Engine public API

pub fn register_raw_fn<T: Variant + Clone>(
    &mut self,
    name: &str,
    arg_types: &[TypeId],
    func: impl Fn(&Engine, &Module, &mut [&mut Dynamic]) -> Result<T, Box<EvalAltResult>> + SendSync + 'static
) -> &mut Self

👎 Deprecated:

this function is volatile and may change

Register a function of the Engine.

WARNING - Low Level API

This function is very low level. It takes a list of TypeId's indicating the actual types of the parameters.

Arguments are simply passed in as a mutable array of &mut Dynamic, The arguments are guaranteed to be of the correct types matching the TypeId's.

To access a primary parameter value (i.e. cloning is cheap), use: args[n].clone().cast::<T>()

To access a parameter value and avoid cloning, use std::mem::take(args[n]).cast::<T>(). Notice that this will consume the argument, replacing it with ().

To access the first mutable parameter, use args.get_mut(0).unwrap()

pub fn register_type<T: Variant + Clone>(&mut self) -> &mut Self

Register a custom type for use with the Engine. The type must implement Clone.

Example

#[derive(Debug, Clone, Eq, PartialEq)]
struct TestStruct {
    field: i64
}

impl TestStruct {
    fn new() -> Self                    { TestStruct { field: 1 } }
    fn update(&mut self, offset: i64)   { self.field += offset; }
}

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Use `register_fn` to register methods on the type.
engine.register_fn("update", TestStruct::update);

assert_eq!(
    engine.eval::<TestStruct>("let x = new_ts(); x.update(41); x")?,
    TestStruct { field: 42 }
);

pub fn register_type_with_name<T: Variant + Clone>(
    &mut self,
    name: &str
) -> &mut Self

Register a custom type for use with the Engine, with a pretty-print name for the type_of function. The type must implement Clone.

Example

#[derive(Clone)]
struct TestStruct {
    field: i64
}

impl TestStruct {
    fn new() -> Self { TestStruct { field: 1 } }
}

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

assert_eq!(
    engine.eval::<String>("let x = new_ts(); type_of(x)")?,
    "rust_out::TestStruct"
);

// Register the custom type with a name.
engine.register_type_with_name::<TestStruct>("Hello");

// Register methods on the type.
engine.register_fn("new_ts", TestStruct::new);

assert_eq!(
    engine.eval::<String>("let x = new_ts(); type_of(x)")?,
    "Hello"
);

pub fn register_iterator<T: Variant + Clone>(
    &mut self,
    f: IteratorFn
) -> &mut Self

Register an iterator adapter for a type with the Engine. This is an advanced feature.

pub fn register_get<T, U>(
    &mut self,
    name: &str,
    callback: impl Fn(&mut T) -> U + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    U: Variant + Clone, 

Register a getter function for a member of a registered type with the Engine.

The function signature must start with &mut self and not &self.

Example

#[derive(Clone)]
struct TestStruct {
    field: i64
}

impl TestStruct {
    fn new() -> Self                { TestStruct { field: 1 } }

    // Even a getter must start with `&mut self` and not `&self`.
    fn get_field(&mut self) -> i64  { self.field }
}

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register a getter on a property (notice it doesn't have to be the same name).
engine.register_get("xyz", TestStruct::get_field);

assert_eq!(engine.eval::<i64>("let a = new_ts(); a.xyz")?, 1);

pub fn register_get_result<T: Variant + Clone>(
    &mut self,
    name: &str,
    callback: impl Fn(&mut T) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static
) -> &mut Self

Register a getter function for a member of a registered type with the Engine. Returns Result<Dynamic, Box<EvalAltResult>>.

The function signature must start with &mut self and not &self.

Example

use rhai::{Engine, Dynamic, EvalAltResult, RegisterFn};

#[derive(Clone)]
struct TestStruct {
    field: i64
}

impl TestStruct {
    fn new() -> Self                { TestStruct { field: 1 } }

    // Even a getter must start with `&mut self` and not `&self`.
    fn get_field(&mut self) -> Result<Dynamic, Box<EvalAltResult>> {
        Ok(self.field.into())
    }
}

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register a getter on a property (notice it doesn't have to be the same name).
engine.register_get_result("xyz", TestStruct::get_field);

assert_eq!(engine.eval::<i64>("let a = new_ts(); a.xyz")?, 1);

pub fn register_set<T, U>(
    &mut self,
    name: &str,
    callback: impl Fn(&mut T, U) + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    U: Variant + Clone, 

Register a setter function for a member of a registered type with the Engine.

Example

#[derive(Debug, Clone, Eq, PartialEq)]
struct TestStruct {
    field: i64
}

impl TestStruct {
    fn new() -> Self                        { TestStruct { field: 1 } }
    fn set_field(&mut self, new_val: i64)   { self.field = new_val; }
}

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register a setter on a property (notice it doesn't have to be the same name)
engine.register_set("xyz", TestStruct::set_field);

// Notice that, with a getter, there is no way to get the property value
assert_eq!(
    engine.eval::<TestStruct>("let a = new_ts(); a.xyz = 42; a")?,
    TestStruct { field: 42 }
);

pub fn register_set_result<T, U>(
    &mut self,
    name: &str,
    callback: impl Fn(&mut T, U) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    U: Variant + Clone, 

Register a setter function for a member of a registered type with the Engine. Returns Result<Dynamic, Box<EvalAltResult>>.

Example

use rhai::{Engine, Dynamic, EvalAltResult, RegisterFn};

#[derive(Debug, Clone, Eq, PartialEq)]
struct TestStruct {
    field: i64
}

impl TestStruct {
    fn new() -> Self                        { TestStruct { field: 1 } }
    fn set_field(&mut self, new_val: i64) -> Result<Dynamic, Box<EvalAltResult>> {
        self.field = new_val;
        Ok(().into())
    }
}

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register a setter on a property (notice it doesn't have to be the same name)
engine.register_set_result("xyz", TestStruct::set_field);

// Notice that, with a getter, there is no way to get the property value
assert_eq!(
    engine.eval::<TestStruct>("let a = new_ts(); a.xyz = 42; a")?,
    TestStruct { field: 42 }
);

pub fn register_get_set<T, U>(
    &mut self,
    name: &str,
    get_fn: impl Fn(&mut T) -> U + SendSync + 'static,
    set_fn: impl Fn(&mut T, U) + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    U: Variant + Clone, 

Shorthand for registering both getter and setter functions of a registered type with the Engine.

All function signatures must start with &mut self and not &self.

Example

#[derive(Clone)]
struct TestStruct {
    field: i64
}

impl TestStruct {
    fn new() -> Self                        { TestStruct { field: 1 } }
    fn get_field(&mut self) -> i64          { self.field }
    // Even a getter must start with `&mut self` and not `&self`.
    fn set_field(&mut self, new_val: i64)   { self.field = new_val; }
}

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register a getter and a setter on a property
// (notice it doesn't have to be the same name)
engine.register_get_set("xyz", TestStruct::get_field, TestStruct::set_field);

assert_eq!(engine.eval::<i64>("let a = new_ts(); a.xyz = 42; a.xyz")?, 42);

pub fn register_indexer_get<T, X, U>(
    &mut self,
    callback: impl Fn(&mut T, X) -> U + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    U: Variant + Clone,
    X: Variant + Clone, 

Register an index getter for a registered type with the Engine.

The function signature must start with &mut self and not &self.

Example

#[derive(Clone)]
struct TestStruct {
    fields: Vec<i64>
}

impl TestStruct {
    fn new() -> Self                { TestStruct { fields: vec![1, 2, 3, 4, 5] } }

    // Even a getter must start with `&mut self` and not `&self`.
    fn get_field(&mut self, index: i64) -> i64 { self.fields[index as usize] }
}

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register an indexer.
engine.register_indexer_get(TestStruct::get_field);

assert_eq!(engine.eval::<i64>("let a = new_ts(); a[2]")?, 3);

pub fn register_indexer_get_result<T, X>(
    &mut self,
    callback: impl Fn(&mut T, X) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    X: Variant + Clone, 

Register an index getter for a registered type with the Engine. Returns Result<Dynamic, Box<EvalAltResult>>.

The function signature must start with &mut self and not &self.

Example

use rhai::{Engine, Dynamic, EvalAltResult, RegisterFn};

#[derive(Clone)]
struct TestStruct {
    fields: Vec<i64>
}

impl TestStruct {
    fn new() -> Self                { TestStruct { fields: vec![1, 2, 3, 4, 5] } }

    // Even a getter must start with `&mut self` and not `&self`.
    fn get_field(&mut self, index: i64) -> Result<Dynamic, Box<EvalAltResult>> {
        Ok(self.fields[index as usize].into())
    }
}

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register an indexer.
engine.register_indexer_get_result(TestStruct::get_field);

assert_eq!(engine.eval::<i64>("let a = new_ts(); a[2]")?, 3);

pub fn register_indexer_set<T, X, U>(
    &mut self,
    callback: impl Fn(&mut T, X, U) + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    U: Variant + Clone,
    X: Variant + Clone, 

Register an index setter for a registered type with the Engine.

Example

#[derive(Clone)]
struct TestStruct {
    fields: Vec<i64>
}

impl TestStruct {
    fn new() -> Self                { TestStruct { fields: vec![1, 2, 3, 4, 5] } }
    fn set_field(&mut self, index: i64, value: i64) { self.fields[index as usize] = value; }
}

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register an indexer.
engine.register_indexer_set(TestStruct::set_field);

assert_eq!(
    engine.eval::<TestStruct>("let a = new_ts(); a[2] = 42; a")?.fields[2],
    42
);

pub fn register_indexer_set_result<T, X, U>(
    &mut self,
    callback: impl Fn(&mut T, X, U) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    U: Variant + Clone,
    X: Variant + Clone, 

Register an index setter for a registered type with the Engine. Returns Result<Dynamic, Box<EvalAltResult>>.

Example

use rhai::{Engine, Dynamic, EvalAltResult, RegisterFn};

#[derive(Clone)]
struct TestStruct {
    fields: Vec<i64>
}

impl TestStruct {
    fn new() -> Self                { TestStruct { fields: vec![1, 2, 3, 4, 5] } }
    fn set_field(&mut self, index: i64, value: i64) -> Result<Dynamic, Box<EvalAltResult>> {
        self.fields[index as usize] = value;
        Ok(().into())
    }
}

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register an indexer.
engine.register_indexer_set_result(TestStruct::set_field);

assert_eq!(
    engine.eval::<TestStruct>("let a = new_ts(); a[2] = 42; a")?.fields[2],
    42
);

pub fn register_indexer_get_set<T, X, U>(
    &mut self,
    getter: impl Fn(&mut T, X) -> U + SendSync + 'static,
    setter: impl Fn(&mut T, X, U) + SendSync + 'static
) -> &mut Self where
    T: Variant + Clone,
    U: Variant + Clone,
    X: Variant + Clone, 

Shorthand for register both index getter and setter functions for a registered type with the Engine.

Example

#[derive(Clone)]
struct TestStruct {
    fields: Vec<i64>
}

impl TestStruct {
    fn new() -> Self                { TestStruct { fields: vec![1, 2, 3, 4, 5] } }
    fn get_field(&mut self, index: i64) -> i64      { self.fields[index as usize] }
    fn set_field(&mut self, index: i64, value: i64) { self.fields[index as usize] = value; }
}

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register the custom type.
engine.register_type::<TestStruct>();

engine.register_fn("new_ts", TestStruct::new);

// Register an indexer.
engine.register_indexer_get_set(TestStruct::get_field, TestStruct::set_field);

assert_eq!(engine.eval::<i64>("let a = new_ts(); a[2] = 42; a[2]")?, 42);

pub fn compile(&self, script: &str) -> Result<AST, ParseError>

Compile a string into an AST, which can be used later for evaluation.

Example

use rhai::Engine;

let engine = Engine::new();

// Compile a script to an AST and store it for later evaluation
let ast = engine.compile("40 + 2")?;

for _ in 0..42 {
    assert_eq!(engine.eval_ast::<i64>(&ast)?, 42);
}

pub fn compile_with_scope(
    &self,
    scope: &Scope<'_>,
    script: &str
) -> Result<AST, ParseError>

Compile a string into an AST using own scope, which can be used later for evaluation.

The scope is useful for passing constants into the script for optimization when using OptimizationLevel::Full.

Example

use rhai::{Engine, Scope, OptimizationLevel};

let mut engine = Engine::new();

// Set optimization level to 'Full' so the Engine can fold constants
// into function calls and operators.
engine.set_optimization_level(OptimizationLevel::Full);

// Create initialized scope
let mut scope = Scope::new();
scope.push_constant("x", 42_i64);   // 'x' is a constant

// Compile a script to an AST and store it for later evaluation.
// Notice that `Full` optimization is on, so constants are folded
// into function calls and operators.
let ast = engine.compile_with_scope(&mut scope,
            "if x > 40 { x } else { 0 }"    // all 'x' are replaced with 42
)?;

// Normally this would have failed because no scope is passed into the 'eval_ast'
// call and so the variable 'x' does not exist.  Here, it passes because the script
// has been optimized and all references to 'x' are already gone.
assert_eq!(engine.eval_ast::<i64>(&ast)?, 42);

pub fn compile_scripts_with_scope(
    &self,
    scope: &Scope<'_>,
    scripts: &[&str]
) -> Result<AST, ParseError>

When passed a list of strings, first join the strings into one large script, and then compile them into an AST using own scope, which can be used later for evaluation.

The scope is useful for passing constants into the script for optimization when using OptimizationLevel::Full.

Note

All strings are simply parsed one after another with nothing inserted in between, not even a newline or space.

Example

use rhai::{Engine, Scope, OptimizationLevel};

let mut engine = Engine::new();

// Set optimization level to 'Full' so the Engine can fold constants
// into function calls and operators.
engine.set_optimization_level(OptimizationLevel::Full);

// Create initialized scope
let mut scope = Scope::new();
scope.push_constant("x", 42_i64);   // 'x' is a constant

// Compile a script made up of script segments to an AST and store it for later evaluation.
// Notice that `Full` optimization is on, so constants are folded
// into function calls and operators.
let ast = engine.compile_scripts_with_scope(&mut scope, &[
            "if x > 40",            // all 'x' are replaced with 42
            "{ x } el",
            "se { 0 }"              // segments do not need to be valid scripts!
])?;

// Normally this would have failed because no scope is passed into the 'eval_ast'
// call and so the variable 'x' does not exist.  Here, it passes because the script
// has been optimized and all references to 'x' are already gone.
assert_eq!(engine.eval_ast::<i64>(&ast)?, 42);

pub fn compile_file(&self, path: PathBuf) -> Result<AST, Box<EvalAltResult>>

Compile a script file into an AST, which can be used later for evaluation.

Example

use rhai::Engine;

let engine = Engine::new();

// Compile a script file to an AST and store it for later evaluation.
// Notice that a PathBuf is required which can easily be constructed from a string.
let ast = engine.compile_file("script.rhai".into())?;

for _ in 0..42 {
    engine.eval_ast::<i64>(&ast)?;
}

pub fn compile_file_with_scope(
    &self,
    scope: &Scope<'_>,
    path: PathBuf
) -> Result<AST, Box<EvalAltResult>>

Compile a script file into an AST using own scope, which can be used later for evaluation.

The scope is useful for passing constants into the script for optimization when using OptimizationLevel::Full.

Example

use rhai::{Engine, Scope, OptimizationLevel};

let mut engine = Engine::new();

// Set optimization level to 'Full' so the Engine can fold constants.
engine.set_optimization_level(OptimizationLevel::Full);

// Create initialized scope
let mut scope = Scope::new();
scope.push_constant("x", 42_i64);   // 'x' is a constant

// Compile a script to an AST and store it for later evaluation.
// Notice that a PathBuf is required which can easily be constructed from a string.
let ast = engine.compile_file_with_scope(&mut scope, "script.rhai".into())?;

let result = engine.eval_ast::<i64>(&ast)?;

pub fn parse_json(
    &self,
    json: &str,
    has_null: bool
) -> Result<Map, Box<EvalAltResult>>

Parse a JSON string into a map.

The JSON string must be an object hash. It cannot be a simple JavaScript primitive.

Set has_null to true in order to map null values to (). Setting it to false will cause a variable not found error during parsing.

JSON With Sub-Objects

This method assumes no sub-objects in the JSON string. That is because the syntax of a JSON sub-object (or object hash), { .. }, is different from Rhai's syntax, #{ .. }. Parsing a JSON string with sub-objects will cause a syntax error.

If it is certain that the character { never appears in any text string within the JSON object, then globally replace { with #{ before calling this method.

Example

use rhai::{Engine, Map};

let engine = Engine::new();

let map = engine.parse_json(
    r#"{"a":123, "b":42, "c":{"x":false, "y":true}, "d":null}"#
        .replace("{", "#{").as_str(), true)?;

assert_eq!(map.len(), 4);
assert_eq!(map["a"].as_int().unwrap(), 123);
assert_eq!(map["b"].as_int().unwrap(), 42);
assert!(map["d"].is::<()>());

let c = map["c"].read_lock::<Map>().unwrap();
assert_eq!(c["x"].as_bool().unwrap(), false);

pub fn compile_expression(&self, script: &str) -> Result<AST, ParseError>

Compile a string containing an expression into an AST, which can be used later for evaluation.

Example

use rhai::Engine;

let engine = Engine::new();

// Compile a script to an AST and store it for later evaluation
let ast = engine.compile_expression("40 + 2")?;

for _ in 0..42 {
    assert_eq!(engine.eval_ast::<i64>(&ast)?, 42);
}

pub fn compile_expression_with_scope(
    &self,
    scope: &Scope<'_>,
    script: &str
) -> Result<AST, ParseError>

Compile a string containing an expression into an AST using own scope, which can be used later for evaluation.

The scope is useful for passing constants into the script for optimization when using OptimizationLevel::Full.

Example

use rhai::{Engine, Scope, OptimizationLevel};

let mut engine = Engine::new();

// Set optimization level to 'Full' so the Engine can fold constants
// into function calls and operators.
engine.set_optimization_level(OptimizationLevel::Full);

// Create initialized scope
let mut scope = Scope::new();
scope.push_constant("x", 10_i64);   // 'x' is a constant

// Compile a script to an AST and store it for later evaluation.
// Notice that `Full` optimization is on, so constants are folded
// into function calls and operators.
let ast = engine.compile_expression_with_scope(&mut scope,
            "2 + (x + x) * 2"    // all 'x' are replaced with 10
)?;

// Normally this would have failed because no scope is passed into the 'eval_ast'
// call and so the variable 'x' does not exist.  Here, it passes because the script
// has been optimized and all references to 'x' are already gone.
assert_eq!(engine.eval_ast::<i64>(&ast)?, 42);

pub fn eval_file<T: Variant + Clone>(
    &self,
    path: PathBuf
) -> Result<T, Box<EvalAltResult>>

Evaluate a script file.

Example

use rhai::Engine;

let engine = Engine::new();

// Notice that a PathBuf is required which can easily be constructed from a string.
let result = engine.eval_file::<i64>("script.rhai".into())?;

pub fn eval_file_with_scope<T: Variant + Clone>(
    &self,
    scope: &mut Scope<'_>,
    path: PathBuf
) -> Result<T, Box<EvalAltResult>>

Evaluate a script file with own scope.

Example

use rhai::{Engine, Scope};

let engine = Engine::new();

// Create initialized scope
let mut scope = Scope::new();
scope.push("x", 42_i64);

// Notice that a PathBuf is required which can easily be constructed from a string.
let result = engine.eval_file_with_scope::<i64>(&mut scope, "script.rhai".into())?;

pub fn eval<T: Variant + Clone>(
    &self,
    script: &str
) -> Result<T, Box<EvalAltResult>>

Evaluate a string.

Example

use rhai::Engine;

let engine = Engine::new();

assert_eq!(engine.eval::<i64>("40 + 2")?, 42);

pub fn eval_with_scope<T: Variant + Clone>(
    &self,
    scope: &mut Scope<'_>,
    script: &str
) -> Result<T, Box<EvalAltResult>>

Evaluate a string with own scope.

Example

use rhai::{Engine, Scope};

let engine = Engine::new();

// Create initialized scope
let mut scope = Scope::new();
scope.push("x", 40_i64);

assert_eq!(engine.eval_with_scope::<i64>(&mut scope, "x += 2; x")?, 42);
assert_eq!(engine.eval_with_scope::<i64>(&mut scope, "x += 2; x")?, 44);

// The variable in the scope is modified
assert_eq!(scope.get_value::<i64>("x").expect("variable x should exist"), 44);

pub fn eval_expression<T: Variant + Clone>(
    &self,
    script: &str
) -> Result<T, Box<EvalAltResult>>

Evaluate a string containing an expression.

Example

use rhai::Engine;

let engine = Engine::new();

assert_eq!(engine.eval_expression::<i64>("40 + 2")?, 42);

pub fn eval_expression_with_scope<T: Variant + Clone>(
    &self,
    scope: &mut Scope<'_>,
    script: &str
) -> Result<T, Box<EvalAltResult>>

Evaluate a string containing an expression with own scope.

Example

use rhai::{Engine, Scope};

let engine = Engine::new();

// Create initialized scope
let mut scope = Scope::new();
scope.push("x", 40_i64);

assert_eq!(engine.eval_expression_with_scope::<i64>(&mut scope, "x + 2")?, 42);

pub fn eval_ast<T: Variant + Clone>(
    &self,
    ast: &AST
) -> Result<T, Box<EvalAltResult>>

Evaluate an AST.

Example

use rhai::Engine;

let engine = Engine::new();

// Compile a script to an AST and store it for later evaluation
let ast = engine.compile("40 + 2")?;

// Evaluate it
assert_eq!(engine.eval_ast::<i64>(&ast)?, 42);

pub fn eval_ast_with_scope<T: Variant + Clone>(
    &self,
    scope: &mut Scope<'_>,
    ast: &AST
) -> Result<T, Box<EvalAltResult>>

Evaluate an AST with own scope.

Example

use rhai::{Engine, Scope};

let engine = Engine::new();

// Compile a script to an AST and store it for later evaluation
let ast = engine.compile("x + 2")?;

// Create initialized scope
let mut scope = Scope::new();
scope.push("x", 40_i64);

// Compile a script to an AST and store it for later evaluation
let ast = engine.compile("x += 2; x")?;

// Evaluate it
assert_eq!(engine.eval_ast_with_scope::<i64>(&mut scope, &ast)?, 42);
assert_eq!(engine.eval_ast_with_scope::<i64>(&mut scope, &ast)?, 44);

// The variable in the scope is modified
assert_eq!(scope.get_value::<i64>("x").expect("variable x should exist"), 44);

pub fn consume_file(&self, path: PathBuf) -> Result<(), Box<EvalAltResult>>

Evaluate a file, but throw away the result and only return error (if any). Useful for when you don't need the result, but still need to keep track of possible errors.

pub fn consume_file_with_scope(
    &self,
    scope: &mut Scope<'_>,
    path: PathBuf
) -> Result<(), Box<EvalAltResult>>

Evaluate a file with own scope, but throw away the result and only return error (if any). Useful for when you don't need the result, but still need to keep track of possible errors.

pub fn consume(&self, script: &str) -> Result<(), Box<EvalAltResult>>

Evaluate a string, but throw away the result and only return error (if any). Useful for when you don't need the result, but still need to keep track of possible errors.

pub fn consume_with_scope(
    &self,
    scope: &mut Scope<'_>,
    script: &str
) -> Result<(), Box<EvalAltResult>>

Evaluate a string with own scope, but throw away the result and only return error (if any). Useful for when you don't need the result, but still need to keep track of possible errors.

pub fn consume_ast(&self, ast: &AST) -> Result<(), Box<EvalAltResult>>

Evaluate an AST, but throw away the result and only return error (if any). Useful for when you don't need the result, but still need to keep track of possible errors.

pub fn consume_ast_with_scope(
    &self,
    scope: &mut Scope<'_>,
    ast: &AST
) -> Result<(), Box<EvalAltResult>>

Evaluate an AST with own scope, but throw away the result and only return error (if any). Useful for when you don't need the result, but still need to keep track of possible errors.

pub fn call_fn<A: FuncArgs, T: Variant + Clone>(
    &self,
    scope: &mut Scope<'_>,
    ast: &AST,
    name: &str,
    args: A
) -> Result<T, Box<EvalAltResult>>

Call a script function defined in an AST with multiple arguments. Arguments are passed as a tuple.

Example

use rhai::{Engine, Scope};

let engine = Engine::new();

let ast = engine.compile(r"
    fn add(x, y) { len(x) + y + foo }
    fn add1(x)   { len(x) + 1 + foo }
    fn bar()     { foo/2 }
")?;

let mut scope = Scope::new();
scope.push("foo", 42_i64);

// Call the script-defined function
let result: i64 = engine.call_fn(&mut scope, &ast, "add", ( String::from("abc"), 123_i64 ) )?;
assert_eq!(result, 168);

let result: i64 = engine.call_fn(&mut scope, &ast, "add1", ( String::from("abc"), ) )?;
//                                                         ^^^^^^^^^^^^^^^^^^^^^^^^ tuple of one
assert_eq!(result, 46);

let result: i64 = engine.call_fn(&mut scope, &ast, "bar", () )?;
assert_eq!(result, 21);

pub fn call_fn_dynamic(
    &self,
    scope: &mut Scope<'_>,
    lib: impl AsRef<Module>,
    name: &str,
    this_ptr: Option<&mut Dynamic>,
    arg_values: impl AsMut<[Dynamic]>
) -> Result<Dynamic, Box<EvalAltResult>>

Call a script function defined in an AST with multiple Dynamic arguments and optionally a value for binding to the 'this' pointer.

WARNING

All the arguments are consumed, meaning that they're replaced by (). This is to avoid unnecessarily cloning the arguments. Do not use the arguments after this call. If they are needed afterwards, clone them before calling this function.

Example

use rhai::{Engine, Scope, Dynamic};

let engine = Engine::new();

let ast = engine.compile(r"
    fn add(x, y) { len(x) + y + foo }
    fn add1(x)   { len(x) + 1 + foo }
    fn bar()     { foo/2 }
    fn action(x) { this += x; }         // function using 'this' pointer
")?;

let mut scope = Scope::new();
scope.push("foo", 42_i64);

// Call the script-defined function
let result = engine.call_fn_dynamic(&mut scope, &ast, "add", None, [ String::from("abc").into(), 123_i64.into() ])?;
//                                                           ^^^^ no 'this' pointer
assert_eq!(result.cast::<i64>(), 168);

let result = engine.call_fn_dynamic(&mut scope, &ast, "add1", None, [ String::from("abc").into() ])?;
assert_eq!(result.cast::<i64>(), 46);

let result = engine.call_fn_dynamic(&mut scope, &ast, "bar", None, [])?;
assert_eq!(result.cast::<i64>(), 21);

let mut value: Dynamic = 1_i64.into();
let result = engine.call_fn_dynamic(&mut scope, &ast, "action", Some(&mut value), [ 41_i64.into() ])?;
//                                                              ^^^^^^^^^^^^^^^^ binding the 'this' pointer
assert_eq!(value.as_int().unwrap(), 42);

pub fn optimize_ast(
    &self,
    scope: &Scope<'_>,
    ast: AST,
    optimization_level: OptimizationLevel
) -> AST

Optimize the AST with constants defined in an external Scope. An optimized copy of the AST is returned while the original AST is consumed.

Although optimization is performed by default during compilation, sometimes it is necessary to re-optimize an AST. For example, when working with constants that are passed in via an external scope, it will be more efficient to optimize the AST once again to take advantage of the new constants.

With this method, it is no longer necessary to recompile a large script. The script AST can be compiled just once. Before evaluation, constants are passed into the Engine via an external scope (i.e. with scope.push_constant(...)). Then, the `AST is cloned and the copy re-optimized before running.

pub fn on_progress(
    &mut self,
    callback: impl Fn(&u64) -> bool + SendSync + 'static
) -> &mut Self

Register a callback for script evaluation progress.

Example

use rhai::Engine;

let result = Arc::new(RwLock::new(0_u64));
let logger = result.clone();

let mut engine = Engine::new();

engine.on_progress(move |&ops| {
    if ops > 10000 {
        false
    } else if ops % 800 == 0 {
        *logger.write().unwrap() = ops;
        true
    } else {
        true
    }
});

engine.consume("for x in range(0, 50000) {}")
    .expect_err("should error");

assert_eq!(*result.read().unwrap(), 9600);

pub fn on_print(
    &mut self,
    callback: impl Fn(&str) + SendSync + 'static
) -> &mut Self

Override default action of print (print to stdout using println!)

Example

use rhai::Engine;

let result = Arc::new(RwLock::new(String::from("")));

let mut engine = Engine::new();

// Override action of 'print' function
let logger = result.clone();
engine.on_print(move |s| logger.write().unwrap().push_str(s));

engine.consume("print(40 + 2);")?;

assert_eq!(*result.read().unwrap(), "42");

pub fn on_debug(
    &mut self,
    callback: impl Fn(&str) + SendSync + 'static
) -> &mut Self

Override default action of debug (print to stdout using println!)

Example

use rhai::Engine;

let result = Arc::new(RwLock::new(String::from("")));

let mut engine = Engine::new();

// Override action of 'print' function
let logger = result.clone();
engine.on_debug(move |s| logger.write().unwrap().push_str(s));

engine.consume(r#"debug("hello");"#)?;

assert_eq!(*result.read().unwrap(), r#""hello""#);

impl Engine

pub fn new() -> Self

Create a new Engine

pub fn new_raw() -> Self

Create a new Engine with minimal built-in functions. Use the load_package method to load additional packages of functions.

impl Engine

pub fn load_package(&mut self, package: impl Into<PackageLibrary>) -> &mut Self

Load a new package into the Engine.

When searching for functions, packages loaded later are preferred. In other words, loaded packages are searched in reverse order.

pub fn set_optimization_level(
    &mut self,
    optimization_level: OptimizationLevel
) -> &mut Self

Control whether and how the Engine will optimize an AST after compilation.

Not available under the no_optimize feature.

pub fn optimization_level(&self) -> OptimizationLevel

The current optimization level. It controls whether and how the Engine will optimize an AST after compilation.

Not available under the no_optimize feature.

pub fn set_max_call_levels(&mut self, levels: usize) -> &mut Self

Set the maximum levels of function calls allowed for a script in order to avoid infinite recursion and stack overflows.

pub fn max_call_levels(&self) -> usize

The maximum levels of function calls allowed for a script.

pub fn set_max_operations(&mut self, operations: u64) -> &mut Self

Set the maximum number of operations allowed for a script to run to avoid consuming too much resources (0 for unlimited).

pub fn max_operations(&self) -> u64

The maximum number of operations allowed for a script to run (0 for unlimited).

pub fn set_max_modules(&mut self, modules: usize) -> &mut Self

Set the maximum number of imported modules allowed for a script.

pub fn max_modules(&self) -> usize

The maximum number of imported modules allowed for a script.

pub fn set_max_expr_depths(
    &mut self,
    max_expr_depth: usize,
    max_function_expr_depth: usize
) -> &mut Self

Set the depth limits for expressions (0 for unlimited).

pub fn max_expr_depth(&self) -> usize

The depth limit for expressions (0 for unlimited).

pub fn max_function_expr_depth(&self) -> usize

The depth limit for expressions in functions (0 for unlimited).

pub fn set_max_string_size(&mut self, max_size: usize) -> &mut Self

Set the maximum length of strings (0 for unlimited).

pub fn max_string_size(&self) -> usize

The maximum length of strings (0 for unlimited).

pub fn set_max_array_size(&mut self, max_size: usize) -> &mut Self

Set the maximum length of arrays (0 for unlimited).

pub fn max_array_size(&self) -> usize

The maximum length of arrays (0 for unlimited).

pub fn set_max_map_size(&mut self, max_size: usize) -> &mut Self

Set the maximum length of object maps (0 for unlimited).

pub fn max_map_size(&self) -> usize

The maximum length of object maps (0 for unlimited).

pub fn set_module_resolver(
    &mut self,
    resolver: Option<impl ModuleResolver + 'static>
) -> &mut Self

Set the module resolution service used by the Engine.

Not available under the no_module feature.

pub fn disable_symbol(&mut self, symbol: &str) -> &mut Self

Disable a particular keyword or operator in the language.

Examples

The following will raise an error during parsing because the if keyword is disabled and is recognized as a variable name!

use rhai::Engine;

let mut engine = Engine::new();

engine.disable_symbol("if");    // disable the 'if' keyword

engine.compile("let x = if true { 42 } else { 0 };")?;
//                      ^ 'if' is rejected as a reserved keyword

The following will raise an error during parsing because the += operator is disabled.

use rhai::Engine;

let mut engine = Engine::new();

engine.disable_symbol("+=");    // disable the '+=' operator

engine.compile("let x = 42; x += 1;")?;
//                            ^ unknown operator

pub fn register_custom_operator(
    &mut self,
    keyword: &str,
    precedence: u8
) -> Result<&mut Self, String>

Register a custom operator into the language.

The operator must be a valid identifier (i.e. it cannot be a symbol).

Examples

use rhai::{Engine, RegisterFn};

let mut engine = Engine::new();

// Register a custom operator called 'foo' and give it
// a precedence of 160 (i.e. between +|- and *|/).
engine.register_custom_operator("foo", 160).unwrap();

// Register a binary function named 'foo'
engine.register_fn("foo", |x: i64, y: i64| (x * y) - (x + y));

assert_eq!(
    engine.eval_expression::<i64>("1 + 2 * 3 foo 4 - 5 / 6")?,
    15
);

impl Engine

pub fn register_custom_syntax<S: AsRef<str> + ToString>(
    &mut self,
    keywords: &[S],
    scope_delta: isize,
    func: impl Fn(&Engine, &mut EvalContext<'_, '_, '_, '_, '_, '_>, &mut Scope<'_>, &[Expression<'_>]) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static
) -> Result<&mut Self, ParseError>

pub fn eval_expression_tree(
    &self,
    context: &mut EvalContext<'_, '_, '_, '_, '_, '_>,
    scope: &mut Scope<'_>,
    expr: &Expression<'_>
) -> Result<Dynamic, Box<EvalAltResult>>

Evaluate an expression tree.

WARNING - Low Level API

This function is very low level. It evaluates an expression from an AST.

Trait Implementations

impl Debug for Engine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Engine

fn default() -> Self

Returns the "default value" for a type.

impl<RET: Variant + Clone> Func<(), RET> for Engine

type Output = Box<dyn Fn() -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<A: Variant + Clone, B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(K, L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(L, M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(L, M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(M, N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(M, N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(N, P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(N, P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(P, Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(P, Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(Q, R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(Q, R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(R, S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(R, S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(S, T, U, V), RET> for Engine

type Output = Box<dyn Fn(S, T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(T, U, V), RET> for Engine

type Output = Box<dyn Fn(T, U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<U: Variant + Clone, V: Variant + Clone, RET: Variant + Clone> Func<(U, V), RET> for Engine

type Output = Box<dyn Fn(U, V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<V: Variant + Clone, RET: Variant + Clone> Func<(V,), RET> for Engine

type Output = Box<dyn Fn(V) -> Result<RET, Box<EvalAltResult>>>

fn create_from_ast(self, ast: AST, entry_point: &str) -> Self::Output

Create a Rust anonymous function from an AST. The Engine and AST are consumed and basically embedded into the closure.

fn create_from_script(
    self,
    script: &str,
    entry_point: &str
) -> Result<Self::Output, ParseError>

Create a Rust anonymous function from a script. The Engine is consumed and basically embedded into the closure.

impl<FN: Fn() -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<A: Variant + Clone, B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<A: Variant + Clone, B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<A>, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<B>, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<C>, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<D>, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<E>, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<F>, G, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<G>, H, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut H, J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<H>, J, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut J, K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<J>, K, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut K, L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<K>, L, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut L, M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<L>, M, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut M, N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<M>, N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<N>, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<P>, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<Q>, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<R>, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<S>, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<T>, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<U>, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<V: Variant + Clone, FN: Fn(&mut V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Mut<V>,), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(N, P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (N, P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(P, Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (P, Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(Q, R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (Q, R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(R, S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (R, S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(S, T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (S, T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(T, U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (T, U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<U: Variant + Clone, V: Variant + Clone, FN: Fn(U, V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (U, V), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<V: Variant + Clone, FN: Fn(V) -> RET + SendSync + 'static, RET: Variant + Clone> RegisterFn<FN, (V,), RET> for Engine

fn register_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom function with the Engine.

impl<FN: Fn() -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, ()> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<A: Variant + Clone, B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<A: Variant + Clone, B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<A>, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<B: Variant + Clone, C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<B>, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<C: Variant + Clone, D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<C>, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<D: Variant + Clone, E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<D>, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<E: Variant + Clone, F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<E>, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<F: Variant + Clone, G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<F>, G, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<G: Variant + Clone, H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut G, H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<G>, H, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<H: Variant + Clone, J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut H, J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<H>, J, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<J: Variant + Clone, K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut J, K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<J>, K, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<K: Variant + Clone, L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut K, L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<K>, L, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<L: Variant + Clone, M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut L, M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<L>, M, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<M: Variant + Clone, N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut M, N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<M>, N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<N>, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<P>, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<Q>, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<R>, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<S>, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<T>, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<U: Variant + Clone, V: Variant + Clone, FN: Fn(&mut U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<U>, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<V: Variant + Clone, FN: Fn(&mut V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Mut<V>,)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<N: Variant + Clone, P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(N, P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (N, P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<P: Variant + Clone, Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(P, Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (P, Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<Q: Variant + Clone, R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(Q, R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (Q, R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<R: Variant + Clone, S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(R, S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (R, S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<S: Variant + Clone, T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(S, T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (S, T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<T: Variant + Clone, U: Variant + Clone, V: Variant + Clone, FN: Fn(T, U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (T, U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<U: Variant + Clone, V: Variant + Clone, FN: Fn(U, V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (U, V)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.

impl<V: Variant + Clone, FN: Fn(V) -> Result<Dynamic, Box<EvalAltResult>> + SendSync + 'static> RegisterResultFn<FN, (V,)> for Engine

fn register_result_fn(&mut self, name: &str, f: FN) -> &mut Self

Register a custom fallible function with the Engine.