62 lines
1.6 KiB
Rust
62 lines
1.6 KiB
Rust
mod generated;
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use std::sync::Arc;
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use {
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SyntaxNode, SyntaxRoot, TreeRoot, SyntaxError,
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SyntaxKind::*,
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};
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pub use self::generated::*;
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pub trait AstNode<R: TreeRoot>: Sized {
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fn cast(syntax: SyntaxNode<R>) -> Option<Self>;
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fn syntax(&self) -> &SyntaxNode<R>;
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}
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impl File<Arc<SyntaxRoot>> {
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pub fn parse(text: &str) -> Self {
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File::cast(::parse(text)).unwrap()
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}
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}
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impl<R: TreeRoot> File<R> {
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pub fn errors(&self) -> Vec<SyntaxError> {
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self.syntax().root.errors.clone()
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}
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}
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impl<R: TreeRoot> Function<R> {
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pub fn has_atom_attr(&self, atom: &str) -> bool {
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self.syntax()
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.children()
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.filter(|node| node.kind() == ATTR)
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.any(|attr| {
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let mut metas = attr.children().filter(|node| node.kind() == META_ITEM);
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let meta = match metas.next() {
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None => return false,
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Some(meta) => {
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if metas.next().is_some() {
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return false;
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}
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meta
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}
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};
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let mut children = meta.children();
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match children.next() {
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None => false,
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Some(child) => {
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if children.next().is_some() {
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return false;
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}
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child.kind() == IDENT && child.text() == atom
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}
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}
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})
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}
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}
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impl<R: TreeRoot> Name<R> {
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pub fn text(&self) -> String {
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self.syntax().text()
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}
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}
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