Struct gdnative_bindings_lily::Expression [−][src]
pub struct Expression { /* fields omitted */ }
Expand description
core class Expression
inherits Reference
(reference counted).
Official documentation
See the documentation of this class in the Godot engine’s official documentation. The method descriptions are generated from it and typically contain code samples in GDScript, not Rust.
Memory management
The lifetime of this object is automatically managed through reference counting.
Class hierarchy
Expression inherits methods from:
Safety
All types in the Godot API have “interior mutability” in Rust parlance.
To enforce that the official thread-safety guidelines are
followed, the typestate pattern is used in the Ref
and TRef
smart pointers,
and the Instance
API. The typestate Access
in these types tracks whether the
access is unique, shared, or exclusive to the current thread. For more information,
see the type-level documentation on Ref
.
Implementations
Creates a new instance of this object.
This is a reference-counted type. The returned object is automatically managed
by Ref
.
Executes the expression that was previously parsed by [method parse] and returns the result. Before you use the returned object, you should check if the method failed by calling [method has_execute_failed]. If you defined input variables in [method parse], you can specify their values in the inputs array, in the same order.
Default Arguments
inputs
-[ ]
base_instance
-null
show_error
-true
Returns the error text if [method parse] has failed.
Returns true
if [method execute] has failed.
pub fn parse(
&self,
expression: impl Into<GodotString>,
input_names: StringArray
) -> GodotResult
pub fn parse(
&self,
expression: impl Into<GodotString>,
input_names: StringArray
) -> GodotResult
Parses the expression and returns an [enum Error] code.
You can optionally specify names of variables that may appear in the expression with input_names
, so that you can bind them when it gets executed.
Default Arguments
input_names
-PoolStringArray( )
Methods from Deref<Target = Reference>
Trait Implementations
type RefKind = RefCounted
type RefKind = RefCounted
Creates an explicitly null reference of Self
as a method argument. This makes type
inference easier for the compiler compared to Option
. Read more
Creates a new instance of Self
using a zero-argument constructor, as a Unique
reference. Read more
Performs a dynamic reference downcast to target type. Read more
Performs a static reference upcast to a supertype that is guaranteed to be valid. Read more
Creates a persistent reference to the same Godot object with shared thread access. Read more
unsafe fn assume_thread_local(&self) -> Ref<Self, ThreadLocal> where
Self: GodotObject<RefKind = RefCounted>,
unsafe fn assume_thread_local(&self) -> Ref<Self, ThreadLocal> where
Self: GodotObject<RefKind = RefCounted>,
Creates a persistent reference to the same Godot object with thread-local thread access. Read more
Creates a persistent reference to the same Godot object with unique access. Read more
Recovers a instance ID previously returned by Object::get_instance_id
if the object is
still alive. See also TRef::try_from_instance_id
. Read more
Auto Trait Implementations
impl RefUnwindSafe for Expression
impl !Send for Expression
impl !Sync for Expression
impl Unpin for Expression
impl UnwindSafe for Expression