Struct TraversalBuilder

pub struct TraversalBuilder { /* private fields */ }

A builder for expression traversals.

It is constructed via the builder method of the Traversal type.

Example

use hcl::expr::{Traversal, Variable};

let traversal = Traversal::builder(Variable::new("var")?)
    .attr("some_array")
    .index(0)
    .build();

// Serializes as `var.some_array[0]`.

Implementations

impl TraversalBuilder

pub fn attr<T>(self, ident: T) -> Self

where T: Into<Identifier>,

Add an attribute access operator to the traversal chain.

pub fn attr_splat(self) -> Self

Add an attribute splat operator to the traversal chain.

pub fn full_splat(self) -> Self

Add a full splat operator to the traversal chain.

pub fn index<T>(self, expr: T) -> Self

where T: Into<Expression>,

Add an index operator to the traversal chain.

pub fn build(self) -> Traversal

Consume self and return a Traversal.

Trait Implementations

impl Debug for TraversalBuilder

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

Formats the value using the given formatter.