//! AST types for nuwiki documents.
//!
//! Types here are syntax-agnostic — both vimwiki and (eventually) markdown
//! produce the same node shapes.

pub mod block;
pub mod inline;
pub mod link;
pub mod span;
pub mod visit;

pub use block::{
    BlockNode, BlockquoteNode, CheckboxState, CommentNode, DefinitionItemNode, DefinitionListNode,
    ErrorNode, HeadingNode, HorizontalRuleNode, ListItemNode, ListNode, ListSymbol, MathBlockNode,
    ParagraphNode, PreformattedNode, TableAlign, TableCellNode, TableNode, TableRowNode, TagNode,
    TagScope,
};
pub use inline::{
    inline_text, BoldItalicNode, BoldNode, CodeNode, ColorNode, InlineNode, ItalicNode, Keyword,
    KeywordNode, MathInlineNode, SoftBreakNode, StrikethroughNode, SubscriptNode, SuperscriptNode,
    TextNode,
};
pub use link::{
    ExternalLinkNode, LinkKind, LinkTarget, RawUrlNode, TransclusionNode, WikiLinkNode,
};
pub use span::{Position, Span};
pub use visit::{
    walk_block, walk_definition_item, walk_document, walk_inline, walk_list, walk_list_item,
    walk_table, walk_table_row, Visitor,
};

/// Root of an AST.
#[derive(Debug, Clone, Default, PartialEq, Eq)]
pub struct DocumentNode {
    pub span: Span,
    pub children: Vec<BlockNode>,
    pub metadata: PageMetadata,
}

/// Document-level placeholders parsed from `%title` / `%nohtml` / `%template`
/// / `%date` directives, plus the file-level tag accumulator.
///
/// New fields are added at the bottom; consumers should construct with
/// `..Default::default()` to stay forward-compatible.
#[derive(Debug, Clone, Default, PartialEq, Eq)]
pub struct PageMetadata {
    pub title: Option<String>,
    pub nohtml: bool,
    pub template: Option<String>,
    pub date: Option<String>,
    /// File-scope tags parsed by the tag lexer. Convenience
    /// projection of the `BlockNode::Tag` nodes whose scope is `File`.
    pub tags: Vec<String>,
}