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VisualStructure

lex_core::lex::ast::traits

Trait VisualStructure 

Source 
pub trait VisualStructure: AstNode {
    // Provided methods
    fn is_source_line_node(&self) -> bool { ... }
    fn has_visual_header(&self) -> bool { ... }
    fn collapses_with_children(&self) -> bool { ... }
}
Expand description

Trait describing visual/structural properties of nodes for line-oriented rendering

This trait captures whether a node has a direct visual representation in the source, whether it has a header line separate from its content, and whether it’s a homogeneous container whose children can be visually collapsed with the parent.

Provided Methods§

Source

fn is_source_line_node(&self) -> bool

Whether this node corresponds to a line in the source document

Returns true for nodes like TextLine, ListItem, VerbatimLine, BlankLineGroup, and header nodes like Session (title line), Definition (subject line).

Source

fn has_visual_header(&self) -> bool

Whether this node has a visual header line separate from its content

Returns true for Session (has title), Definition (has subject), Annotation (has data line), VerbatimBlock (has subject line).

Source

fn collapses_with_children(&self) -> bool

Whether this is a homogeneous container whose children can collapse with parent icon

Returns true for Paragraph (contains only TextLines) and List (contains only ListItems). These containers don’t have their own visual line, so in line-oriented views, we show the parent icon alongside the child’s icon (¶ ↵ for Paragraph/TextLine).

Implementors§