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introduce hacks module

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This commit is contained in:
Aleksey Kladov 2021-12-28 18:57:13 +03:00
parent aa1788dc71
commit bfc263f1f9
6 changed files with 34 additions and 51 deletions
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22
crates/syntax/src/parsing.rs
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@ -5,7 +5,7 @@ mod reparsing;
use rowan::TextRange;
use crate::{syntax_node::GreenNode, AstNode, SyntaxError, SyntaxNode, SyntaxTreeBuilder};
use crate::{syntax_node::GreenNode, SyntaxError, SyntaxTreeBuilder};
pub(crate) use crate::parsing::reparsing::incremental_reparse;
@ -17,26 +17,6 @@ pub(crate) fn parse_text(text: &str) -> (GreenNode, Vec<SyntaxError>) {
(node, errors)
}
/// Returns `text` parsed as a `T` provided there are no parse errors.
pub(crate) fn parse_text_as<T: AstNode>(
text: &str,
entry_point: parser::ParserEntryPoint,
) -> Result<T, ()> {
let lexed = parser::LexedStr::new(text);
if lexed.errors().next().is_some() {
return Err(());
}
let parser_input = lexed.to_input();
let parser_output = parser::parse(&parser_input, entry_point);
let (node, errors, eof) = build_tree(lexed, parser_output, true);
if !errors.is_empty() || !eof {
return Err(());
}
SyntaxNode::new_root(node).first_child().and_then(T::cast).ok_or(())
}
pub(crate) fn build_tree(
lexed: parser::LexedStr<'_>,
parser_output: parser::Output,