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