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extern crate file;
extern crate libsyntax2;
extern crate testutils;
use std::fmt::Write;
use libsyntax2::{tokenize, parse, Node, File};
use testutils::dir_tests;
#[test]
fn parser_tests() {
dir_tests(
&["parser/ok", "parser/err"],
|text| {
let tokens = tokenize(text);
let file = parse(text.to_string(), &tokens);
dump_tree(&file)
}
)
}
fn dump_tree(file: &File) -> String {
let mut result = String::new();
go(file.root(), &mut result, 0);
return result;
fn go(node: Node, buff: &mut String, level: usize) {
buff.push_str(&String::from(" ").repeat(level));
write!(buff, "{:?}\n", node).unwrap();
let my_errors = node.errors().filter(|e| e.after_child().is_none());
let parent_errors = node.parent().into_iter()
.flat_map(|n| n.errors())
.filter(|e| e.after_child() == Some(node));
for err in my_errors {
buff.push_str(&String::from(" ").repeat(level));
write!(buff, "err: `{}`\n", err.message()).unwrap();
}
for child in node.children() {
go(child, buff, level + 1)
}
for err in parent_errors {
buff.push_str(&String::from(" ").repeat(level));
write!(buff, "err: `{}`\n", err.message()).unwrap();
}
}
}
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