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Finalize attribute grammar

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This commit is contained in:
Aleksey Kladov
2020-07-30 20:16:04 +02:00
parent e28ea81b2b
commit fcce07d2d1
6 changed files with 28 additions and 79 deletions
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28
crates/ra_syntax/src/ast/node_ext.rs
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@@ -7,7 +7,7 @@ use itertools::Itertools;
use ra_parser::SyntaxKind;
use crate::{
ast::{self, support, AstNode, AttrInput, NameOwner, SyntaxNode},
ast::{self, support, AstNode, NameOwner, SyntaxNode},
SmolStr, SyntaxElement, SyntaxToken, T,
};
@@ -39,29 +39,23 @@ pub enum AttrKind {
impl ast::Attr {
pub fn as_simple_atom(&self) -> Option<SmolStr> {
match self.input() {
None => self.simple_name(),
Some(_) => None,
if self.eq_token().is_some() || self.token_tree().is_some() {
return None;
}
self.simple_name()
}
pub fn as_simple_call(&self) -> Option<(SmolStr, ast::TokenTree)> {
match self.input() {
Some(AttrInput::TokenTree(tt)) => Some((self.simple_name()?, tt)),
_ => None,
}
let tt = self.token_tree()?;
Some((self.simple_name()?, tt))
}
pub fn as_simple_key_value(&self) -> Option<(SmolStr, SmolStr)> {
match self.input() {
Some(AttrInput::Literal(lit)) => {
let key = self.simple_name()?;
// FIXME: escape? raw string?
let value = lit.syntax().first_token()?.text().trim_matches('"').into();
Some((key, value))
}
_ => None,
}
let lit = self.literal()?;
let key = self.simple_name()?;
// FIXME: escape? raw string?
let value = lit.syntax().first_token()?.text().trim_matches('"').into();
Some((key, value))
}
pub fn simple_name(&self) -> Option<SmolStr> {