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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::io::{BufferedReader, File};
pub struct ExpectedError {
pub line: uint,
pub kind: ~str,
pub msg: ~str,
}
// Load any test directives embedded in the file
pub fn load_errors(testfile: &Path) -> Vec<ExpectedError> {
let mut error_patterns = Vec::new();
let mut rdr = BufferedReader::new(File::open(testfile).unwrap());
let mut line_num = 1u;
for ln in rdr.lines() {
error_patterns.push_all_move(parse_expected(line_num, ln.unwrap()));
line_num += 1u;
}
return error_patterns;
}
fn parse_expected(line_num: uint, line: ~str) -> Vec<ExpectedError> {
let line = line.trim();
let error_tag = "//~".to_owned();
let mut idx;
match line.find_str(error_tag) {
None => return Vec::new(),
Some(nn) => { idx = (nn as uint) + error_tag.len(); }
}
// "//~^^^ kind msg" denotes a message expected
// three lines above current line:
let mut adjust_line = 0u;
let len = line.len();
while idx < len && line[idx] == ('^' as u8) {
adjust_line += 1u;
idx += 1u;
}
// Extract kind:
while idx < len && line[idx] == (' ' as u8) { idx += 1u; }
let start_kind = idx;
while idx < len && line[idx] != (' ' as u8) { idx += 1u; }
let kind = line.slice(start_kind, idx);
let kind = kind.to_ascii().to_lower().into_str();
// Extract msg:
while idx < len && line[idx] == (' ' as u8) { idx += 1u; }
let msg = line.slice(idx, len).to_owned();
debug!("line={} kind={} msg={}", line_num - adjust_line, kind, msg);
return vec!(ExpectedError{line: line_num - adjust_line, kind: kind,
msg: msg});
}
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