Enum ext_php_rs::props::Property

source · 
pub enum Property<'a, T> {
    Field(Box<dyn Fn(&mut T) -> &mut dyn Prop<'_> + Send + Sync>),
    Method {
        get: PropertyGetter<'a, T>,
        set: PropertySetter<'a, T>,
    },
}
Expand description

Represents a property added to a PHP class.

There are two types of properties:

  • Field properties, where the data is stored inside a struct field.
  • Method properties, where getter and/or setter functions are provided, which are used to get and set the value of the property.

Variants§

§

Field(Box<dyn Fn(&mut T) -> &mut dyn Prop<'_> + Send + Sync>)

§

Method

Fields

§get: PropertyGetter<'a, T>
§set: PropertySetter<'a, T>

Implementations§

Creates a field property.

Parameters
  • f - The function used to get a mutable reference to the property.
Examples
struct Test {
    pub a: i32,
}

let prop: Property<Test> = Property::field(|test: &mut Test| &mut test.a);

Creates a method property with getters and setters.

If either the getter or setter is not given, an exception will be thrown when attempting to retrieve/set the property.

Parameters
  • get - Function used to get the value of the property, in an Option.
  • set - Function used to set the value of the property, in an Option.
Examples
struct Test;

impl Test {
    pub fn get_prop(&self) -> String {
        "Hello".into()
    }

    pub fn set_prop(&mut self, val: String) {
        println!("{}", val);
    }
}

let prop: Property<Test> = Property::method(Some(Test::get_prop), Some(Test::set_prop));

Attempts to retrieve the value of the property from the given object self_.

The value of the property, if successfully retrieved, is loaded into the given Zval retval. If unsuccessful, a PhpException is returned inside the error variant of a result.

Parameters
  • self_ - The object to retrieve the property from.
  • retval - The Zval to load the value of the property into.
Returns

Nothing upon success, a PhpException inside an error variant when the property could not be retrieved.

Examples
struct Test {
    pub a: i32,
}

let prop: Property<Test> = Property::field(|obj: &mut Test| &mut obj.a);

let mut test = Test { a: 500 };
let mut zv = Zval::new();
prop.get(&mut test, &mut zv).unwrap();
assert_eq!(zv.long(), Some(500));
Examples found in repository?
src/zend/handlers.rs (line 98)
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        unsafe fn internal<T: RegisteredClass>(
            object: *mut ZendObject,
            member: *mut ZendStr,
            type_: c_int,
            cache_slot: *mut *mut c_void,
            rv: *mut Zval,
        ) -> PhpResult<*mut Zval> {
            let obj = object
                .as_mut()
                .and_then(|obj| ZendClassObject::<T>::from_zend_obj_mut(obj))
                .ok_or("Invalid object pointer given")?;
            let prop_name = member
                .as_ref()
                .ok_or("Invalid property name pointer given")?;
            let self_ = &mut **obj;
            let props = T::get_metadata().get_properties();
            let prop = props.get(prop_name.as_str()?);

            // retval needs to be treated as initialized, so we set the type to null
            let rv_mut = rv.as_mut().ok_or("Invalid return zval given")?;
            rv_mut.u1.type_info = ZvalTypeFlags::Null.bits();

            Ok(match prop {
                Some(prop) => {
                    prop.get(self_, rv_mut)?;
                    rv
                }
                None => zend_std_read_property(object, member, type_, cache_slot, rv),
            })
        }

        match internal::<T>(object, member, type_, cache_slot, rv) {
            Ok(rv) => rv,
            Err(e) => {
                let _ = e.throw();
                (*rv).set_null();
                rv
            }
        }
    }

    unsafe extern "C" fn write_property<T: RegisteredClass>(
        object: *mut ZendObject,
        member: *mut ZendStr,
        value: *mut Zval,
        cache_slot: *mut *mut c_void,
    ) -> *mut Zval {
        #[inline(always)]
        unsafe fn internal<T: RegisteredClass>(
            object: *mut ZendObject,
            member: *mut ZendStr,
            value: *mut Zval,
            cache_slot: *mut *mut c_void,
        ) -> PhpResult<*mut Zval> {
            let obj = object
                .as_mut()
                .and_then(|obj| ZendClassObject::<T>::from_zend_obj_mut(obj))
                .ok_or("Invalid object pointer given")?;
            let prop_name = member
                .as_ref()
                .ok_or("Invalid property name pointer given")?;
            let self_ = &mut **obj;
            let props = T::get_metadata().get_properties();
            let prop = props.get(prop_name.as_str()?);
            let value_mut = value.as_mut().ok_or("Invalid return zval given")?;

            Ok(match prop {
                Some(prop) => {
                    prop.set(self_, value_mut)?;
                    value
                }
                None => zend_std_write_property(object, member, value, cache_slot),
            })
        }

        match internal::<T>(object, member, value, cache_slot) {
            Ok(rv) => rv,
            Err(e) => {
                let _ = e.throw();
                value
            }
        }
    }

    unsafe extern "C" fn get_properties<T: RegisteredClass>(
        object: *mut ZendObject,
    ) -> *mut ZendHashTable {
        #[inline(always)]
        unsafe fn internal<T: RegisteredClass>(
            object: *mut ZendObject,
            props: &mut ZendHashTable,
        ) -> PhpResult {
            let obj = object
                .as_mut()
                .and_then(|obj| ZendClassObject::<T>::from_zend_obj_mut(obj))
                .ok_or("Invalid object pointer given")?;
            let self_ = &mut **obj;
            let struct_props = T::get_metadata().get_properties();

            for (name, val) in struct_props {
                let mut zv = Zval::new();
                if val.get(self_, &mut zv).is_err() {
                    continue;
                }
                props.insert(name, zv).map_err(|e| {
                    format!("Failed to insert value into properties hashtable: {:?}", e)
                })?;
            }

            Ok(())
        }

        let props = zend_std_get_properties(object)
            .as_mut()
            .or_else(|| Some(ZendHashTable::new().into_raw()))
            .expect("Failed to get property hashtable");

        if let Err(e) = internal::<T>(object, props) {
            let _ = e.throw();
        }

        props
    }

    unsafe extern "C" fn has_property<T: RegisteredClass>(
        object: *mut ZendObject,
        member: *mut ZendStr,
        has_set_exists: c_int,
        cache_slot: *mut *mut c_void,
    ) -> c_int {
        #[inline(always)]
        unsafe fn internal<T: RegisteredClass>(
            object: *mut ZendObject,
            member: *mut ZendStr,
            has_set_exists: c_int,
            cache_slot: *mut *mut c_void,
        ) -> PhpResult<c_int> {
            let obj = object
                .as_mut()
                .and_then(|obj| ZendClassObject::<T>::from_zend_obj_mut(obj))
                .ok_or("Invalid object pointer given")?;
            let prop_name = member
                .as_ref()
                .ok_or("Invalid property name pointer given")?;
            let props = T::get_metadata().get_properties();
            let prop = props.get(prop_name.as_str()?);
            let self_ = &mut **obj;

            match has_set_exists {
                //
                // * 0 (has) whether property exists and is not NULL
                0 => {
                    if let Some(val) = prop {
                        let mut zv = Zval::new();
                        val.get(self_, &mut zv)?;
                        if !zv.is_null() {
                            return Ok(1);
                        }
                    }
                }
                //
                // * 1 (set) whether property exists and is true
                1 => {
                    if let Some(val) = prop {
                        let mut zv = Zval::new();
                        val.get(self_, &mut zv)?;

                        if zend_is_true(&mut zv) == 1 {
                            return Ok(1);
                        }
                    }
                }
                //
                // * 2 (exists) whether property exists
                2 => {
                    if prop.is_some() {
                        return Ok(1);
                    }
                }
                _ => return Err(
                    "Invalid value given for `has_set_exists` in struct `has_property` function."
                        .into(),
                ),
            };

            Ok(zend_std_has_property(
                object,
                member,
                has_set_exists,
                cache_slot,
            ))
        }

Attempts to set the value of the property inside the given object self_.

The new value of the property is supplied inside the given Zval value. If unsuccessful, a PhpException is returned inside the error variant of a result.

Parameters
  • self_ - The object to set the property in.
  • value - The Zval containing the new content for the property.
Returns

Nothing upon success, a PhpException inside an error variant when the property could not be set.

Examples
struct Test {
    pub a: i32,
}

let prop: Property<Test> = Property::field(|obj: &mut Test| &mut obj.a);

let mut test = Test { a: 500 };
let zv = 100.into_zval(false).unwrap();
prop.set(&mut test, &zv).unwrap();
assert_eq!(test.a, 100);
Examples found in repository?
src/zend/handlers.rs (line 142)
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        unsafe fn internal<T: RegisteredClass>(
            object: *mut ZendObject,
            member: *mut ZendStr,
            value: *mut Zval,
            cache_slot: *mut *mut c_void,
        ) -> PhpResult<*mut Zval> {
            let obj = object
                .as_mut()
                .and_then(|obj| ZendClassObject::<T>::from_zend_obj_mut(obj))
                .ok_or("Invalid object pointer given")?;
            let prop_name = member
                .as_ref()
                .ok_or("Invalid property name pointer given")?;
            let self_ = &mut **obj;
            let props = T::get_metadata().get_properties();
            let prop = props.get(prop_name.as_str()?);
            let value_mut = value.as_mut().ok_or("Invalid return zval given")?;

            Ok(match prop {
                Some(prop) => {
                    prop.set(self_, value_mut)?;
                    value
                }
                None => zend_std_write_property(object, member, value, cache_slot),
            })
        }

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.