rust/src/compiletest/header.rs

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// Copyright 2012-2013 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 core::prelude::*;
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use common;
use common::config;
use core::io::ReaderUtil;
use core::io;
use core::os;
use core::str;
pub struct TestProps {
// Lines that should be expected, in order, on standard out
error_patterns: ~[~str],
// Extra flags to pass to the compiler
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compile_flags: Option<~str>,
// If present, the name of a file that this test should match when
// pretty-printed
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pp_exact: Option<Path>,
// Modules from aux directory that should be compiled
aux_builds: ~[~str],
// Environment settings to use during execution
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exec_env: ~[(~str,~str)],
// Commands to be given to the debugger, when testing debug info
debugger_cmds: ~[~str],
// Lines to check if they appear in the expected debugger output
check_lines: ~[~str],
}
// Load any test directives embedded in the file
pub fn load_props(testfile: &Path) -> TestProps {
let mut error_patterns = ~[];
let mut aux_builds = ~[];
let mut exec_env = ~[];
let mut compile_flags = None;
let mut pp_exact = None;
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let mut debugger_cmds = ~[];
let mut check_lines = ~[];
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for iter_header(testfile) |ln| {
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match parse_error_pattern(ln) {
Some(ep) => error_patterns.push(ep),
None => ()
};
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if compile_flags.is_none() {
compile_flags = parse_compile_flags(ln);
}
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if pp_exact.is_none() {
pp_exact = parse_pp_exact(ln, testfile);
}
for parse_aux_build(ln).each |ab| {
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aux_builds.push(*ab);
}
for parse_exec_env(ln).each |ee| {
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exec_env.push(*ee);
}
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match parse_debugger_cmd(ln) {
Some(dc) => debugger_cmds.push(dc),
None => ()
};
match parse_check_line(ln) {
Some(cl) => check_lines.push(cl),
None => ()
};
};
return TestProps {
error_patterns: error_patterns,
compile_flags: compile_flags,
pp_exact: pp_exact,
aux_builds: aux_builds,
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exec_env: exec_env,
debugger_cmds: debugger_cmds,
check_lines: check_lines
};
}
pub fn is_test_ignored(config: config, testfile: &Path) -> bool {
let mut found = false;
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for iter_header(testfile) |ln| {
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if parse_name_directive(ln, ~"xfail-test") { return true; }
if parse_name_directive(ln, xfail_target()) { return true; }
if config.mode == common::mode_pretty &&
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parse_name_directive(ln, ~"xfail-pretty") { return true; }
};
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return found;
fn xfail_target() -> ~str {
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~"xfail-" + str::from_slice(os::SYSNAME)
}
}
fn iter_header(testfile: &Path, it: &fn(~str) -> bool) -> bool {
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let rdr = io::file_reader(testfile).get();
while !rdr.eof() {
let ln = rdr.read_line();
// Assume that any directives will be found before the first
// module or function. This doesn't seem to be an optimization
// with a warm page cache. Maybe with a cold one.
if str::starts_with(ln, ~"fn")
|| str::starts_with(ln, ~"mod") {
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return false;
} else { if !(it(ln)) { return false; } }
}
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return true;
}
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fn parse_error_pattern(line: ~str) -> Option<~str> {
parse_name_value_directive(line, ~"error-pattern")
}
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fn parse_aux_build(line: ~str) -> Option<~str> {
parse_name_value_directive(line, ~"aux-build")
}
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fn parse_compile_flags(line: ~str) -> Option<~str> {
parse_name_value_directive(line, ~"compile-flags")
}
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fn parse_debugger_cmd(line: ~str) -> Option<~str> {
parse_name_value_directive(line, ~"debugger")
}
fn parse_check_line(line: ~str) -> Option<~str> {
parse_name_value_directive(line, ~"check")
}
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fn parse_exec_env(line: ~str) -> Option<(~str, ~str)> {
do parse_name_value_directive(line, ~"exec-env").map |nv| {
// nv is either FOO or FOO=BAR
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let mut strs = ~[];
for str::each_splitn_char(*nv, '=', 1u) |s| { strs.push(s.to_owned()); }
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match strs.len() {
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1u => (strs[0], ~""),
2u => (strs[0], strs[1]),
n => fail!(fmt!("Expected 1 or 2 strings, not %u", n))
}
}
}
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fn parse_pp_exact(line: ~str, testfile: &Path) -> Option<Path> {
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match parse_name_value_directive(line, ~"pp-exact") {
Some(s) => Some(Path(s)),
None => {
if parse_name_directive(line, ~"pp-exact") {
Some(testfile.file_path())
} else {
None
}
}
}
}
fn parse_name_directive(line: ~str, directive: ~str) -> bool {
str::contains(line, directive)
}
fn parse_name_value_directive(line: ~str,
directive: ~str) -> Option<~str> {
let keycolon = directive + ~":";
match str::find_str(line, keycolon) {
Some(colon) => {
let value = str::slice(line, colon + str::len(keycolon),
str::len(line)).to_owned();
debug!("%s: %s", directive, value);
Some(value)
}
None => None
}
}