61 lines
1.8 KiB
Rust
61 lines
1.8 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::path::{Path};
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use std::fmt::Write;
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use libsyntax2::{tokenize, parse, Node, File};
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use testutils::{collect_tests, assert_equal_text};
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#[test]
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fn parser_tests() {
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for test_case in collect_tests(&["parser/ok", "parser/err"]) {
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parser_test_case(&test_case);
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}
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}
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fn parser_test_case(path: &Path) {
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let actual = {
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let text = file::get_text(path).unwrap();
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let tokens = tokenize(&text);
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let file = parse(text, &tokens);
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dump_tree(&file)
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};
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let expected_path = path.with_extension("txt");
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let expected = file::get_text(&expected_path).expect(
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&format!("Can't read {}", expected_path.display())
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);
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let expected = expected.as_str();
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let actual = actual.as_str();
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assert_equal_text(expected, actual, &expected_path);
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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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