Struct liquid_interpreter::Stack

pub struct Stack<'g> { /* fields omitted */ }

Stack of variables.

Methods

impl<'g> Stack<'g>

pub fn empty() -> Self

Create an empty stack

pub fn with_globals(globals: &'g dyn ValueStore) -> Self

Create a stack initialized with read-only ValueStore.

pub fn frame_name(&self) -> Option<&str>

The name of the currently active template.

pub fn try_get(&self, path: PathRef) -> Option<&Value>

Recursively index into the stack.

pub fn get(&self, path: PathRef) -> Result<&Value>

Recursively index into the stack.

pub fn set_index<S>(&mut self, name: S, val: Value) -> Option<Value> where     S: Into<Cow<'static, str>>,

Used by increment and decrement tags

pub fn get_index<'a>(&'a self, name: &str) -> Option<&'a Value>

Used by increment and decrement tags

pub fn set_global<S>(&mut self, name: S, val: Value) -> Option<Value> where     S: Into<Cow<'static, str>>,

Sets a value in the global context.

pub fn set<S>(&mut self, name: S, val: Value) -> Option<Value> where     S: Into<Cow<'static, str>>,

Sets a value to the rendering context. Note that it needs to be wrapped in a liquid::Value.

Panics

Panics if there is no frame on the local values stack. Context instances are created with a top-level stack frame in place, so this should never happen in a well-formed program.

Trait Implementations

impl<'g> Clone for Stack<'g>

fn clone(&self) -> Stack<'g>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'g> Default for Stack<'g>

fn default() -> Self

Returns the "default value" for a type.

impl<'g> Debug for Stack<'g>

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

Formats the value using the given formatter.