Enum fluent_syntax::ast::PatternElement

pub enum PatternElement<S> {
    TextElement {
        value: S,
    },
    Placeable {
        expression: Expression<S>,
    },
}

PatternElement is an element of a Pattern.

Each PatternElement node represents either a simple textual value, or a combination of text literals and placeholder Expression nodes.

Example

use fluent_syntax::parser;
use fluent_syntax::ast;

let ftl = r#"

hello-world = Hello, World!

welcome = Welcome, { $userName }.

"#;

let resource = parser::parse(ftl)
    .expect("Failed to parse an FTL resource.");

assert_eq!(
    resource,
    ast::Resource {
        body: vec![
            ast::Entry::Message(ast::Message {
                id: ast::Identifier {
                    name: "hello-world"
                },
                value: Some(ast::Pattern {
                    elements: vec![
                        ast::PatternElement::TextElement {
                            value: "Hello, World!"
                        }
                    ]
                }),
                attributes: vec![],
                comment: None,
            }),
            ast::Entry::Message(ast::Message {
                id: ast::Identifier {
                    name: "welcome"
                },
                value: Some(ast::Pattern {
                    elements: vec![
                        ast::PatternElement::TextElement {
                            value: "Welcome, "
                        },
                        ast::PatternElement::Placeable {
                            expression: ast::Expression::Inline(
                                ast::InlineExpression::VariableReference {
                                    id: ast::Identifier {
                                        name: "userName"
                                    }
                                }
                            )
                        },
                        ast::PatternElement::TextElement {
                            value: "."
                        }
                    ]
                }),
                attributes: vec![],
                comment: None,
            }),
        ]
    }
);

Variants

TextElement

Fields

value: S

Placeable

Fields

expression: Expression<S>

Trait Implementations

impl<S: Clone> Clone for PatternElement<S>

fn clone(&self) -> PatternElement<S>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<S: Debug> Debug for PatternElement<S>

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

Formats the value using the given formatter.

impl<S: PartialEq> PartialEq for PatternElement<S>

fn eq(&self, other: &PatternElement<S>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<S> StructuralPartialEq for PatternElement<S>