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.
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use common::Config;
use common;
use util;
pub struct TestProps {
// Lines that should be expected, in order, on standard out
pub error_patterns: Vec<StrBuf> ,
// Extra flags to pass to the compiler
pub compile_flags: Option<StrBuf>,
// Extra flags to pass when the compiled code is run (such as --bench)
pub run_flags: Option<StrBuf>,
// If present, the name of a file that this test should match when
// pretty-printed
pub pp_exact: Option<Path>,
// Modules from aux directory that should be compiled
pub aux_builds: Vec<StrBuf> ,
// Environment settings to use during execution
pub exec_env: Vec<(StrBuf,StrBuf)> ,
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// Lines to check if they appear in the expected debugger output
pub check_lines: Vec<StrBuf> ,
// Flag to force a crate to be built with the host architecture
pub force_host: bool,
// Check stdout for error-pattern output as well as stderr
pub check_stdout: bool,
// Don't force a --crate-type=dylib flag on the command line
pub no_prefer_dynamic: bool,
// Don't run --pretty expanded when running pretty printing tests
pub no_pretty_expanded: bool,
}
// Load any test directives embedded in the file
pub fn load_props(testfile: &Path) -> TestProps {
let mut error_patterns = Vec::new();
let mut aux_builds = Vec::new();
let mut exec_env = Vec::new();
let mut compile_flags = None;
let mut run_flags = None;
let mut pp_exact = None;
let mut check_lines = Vec::new();
let mut force_host = false;
let mut check_stdout = false;
let mut no_prefer_dynamic = false;
let mut no_pretty_expanded = false;
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);
}
if run_flags.is_none() {
run_flags = parse_run_flags(ln);
}
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if pp_exact.is_none() {
pp_exact = parse_pp_exact(ln, testfile);
}
if !force_host {
force_host = parse_force_host(ln);
}
if !check_stdout {
check_stdout = parse_check_stdout(ln);
}
if !no_prefer_dynamic {
no_prefer_dynamic = parse_no_prefer_dynamic(ln);
}
if !no_pretty_expanded {
no_pretty_expanded = parse_no_pretty_expanded(ln);
}
match parse_aux_build(ln) {
Some(ab) => { aux_builds.push(ab); }
None => {}
}
match parse_exec_env(ln) {
Some(ee) => { exec_env.push(ee); }
None => {}
}
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match parse_check_line(ln) {
Some(cl) => check_lines.push(cl),
None => ()
};
true
});
TestProps {
error_patterns: error_patterns,
compile_flags: compile_flags,
run_flags: run_flags,
pp_exact: pp_exact,
aux_builds: aux_builds,
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exec_env: exec_env,
check_lines: check_lines,
force_host: force_host,
check_stdout: check_stdout,
no_prefer_dynamic: no_prefer_dynamic,
no_pretty_expanded: no_pretty_expanded,
}
}
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pub fn is_test_ignored(config: &Config, testfile: &Path) -> bool {
fn ignore_target(config: &Config) -> StrBuf {
format_strbuf!("ignore-{}", util::get_os(config.target.as_slice()))
}
fn ignore_stage(config: &Config) -> StrBuf {
format_strbuf!("ignore-{}",
config.stage_id.as_slice().split('-').next().unwrap())
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}
let val = iter_header(testfile, |ln| {
if parse_name_directive(ln, "ignore-test") {
false
} else if parse_name_directive(ln, ignore_target(config).as_slice()) {
false
} else if parse_name_directive(ln, ignore_stage(config).as_slice()) {
false
} else if config.mode == common::Pretty &&
parse_name_directive(ln, "ignore-pretty") {
false
} else if config.target != config.host &&
parse_name_directive(ln, "ignore-cross-compile") {
false
} else {
true
}
});
!val
}
fn iter_header(testfile: &Path, it: |&str| -> bool) -> bool {
use std::io::{BufferedReader, File};
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let mut rdr = BufferedReader::new(File::open(testfile).unwrap());
for ln in rdr.lines() {
// 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.
let ln = ln.unwrap();
if ln.as_slice().starts_with("fn") ||
ln.as_slice().starts_with("mod") {
return true;
} else {
if !(it(ln.as_slice().trim())) {
return false;
}
}
}
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return true;
}
fn parse_error_pattern(line: &str) -> Option<StrBuf> {
parse_name_value_directive(line, "error-pattern".to_strbuf())
}
fn parse_aux_build(line: &str) -> Option<StrBuf> {
parse_name_value_directive(line, "aux-build".to_strbuf())
}
fn parse_compile_flags(line: &str) -> Option<StrBuf> {
parse_name_value_directive(line, "compile-flags".to_strbuf())
}
fn parse_run_flags(line: &str) -> Option<StrBuf> {
parse_name_value_directive(line, "run-flags".to_strbuf())
}
fn parse_check_line(line: &str) -> Option<StrBuf> {
parse_name_value_directive(line, "check".to_strbuf())
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}
fn parse_force_host(line: &str) -> bool {
parse_name_directive(line, "force-host")
}
fn parse_check_stdout(line: &str) -> bool {
parse_name_directive(line, "check-stdout")
}
fn parse_no_prefer_dynamic(line: &str) -> bool {
parse_name_directive(line, "no-prefer-dynamic")
}
fn parse_no_pretty_expanded(line: &str) -> bool {
parse_name_directive(line, "no-pretty-expanded")
}
fn parse_exec_env(line: &str) -> Option<(StrBuf, StrBuf)> {
parse_name_value_directive(line, "exec-env".to_strbuf()).map(|nv| {
// nv is either FOO or FOO=BAR
let mut strs: Vec<StrBuf> = nv.as_slice()
.splitn('=', 1)
.map(|s| s.to_strbuf())
.collect();
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match strs.len() {
1u => (strs.pop().unwrap(), "".to_strbuf()),
2u => {
let end = strs.pop().unwrap();
(strs.pop().unwrap(), end)
}
n => fail!("Expected 1 or 2 strings, not {}", n)
}
})
}
fn parse_pp_exact(line: &str, testfile: &Path) -> Option<Path> {
match parse_name_value_directive(line, "pp-exact".to_strbuf()) {
Some(s) => Some(Path::new(s)),
None => {
if parse_name_directive(line, "pp-exact") {
testfile.filename().map(|s| Path::new(s))
} else {
None
}
}
}
}
fn parse_name_directive(line: &str, directive: &str) -> bool {
line.contains(directive)
}
pub fn parse_name_value_directive(line: &str, directive: StrBuf)
-> Option<StrBuf> {
let keycolon = format_strbuf!("{}:", directive);
match line.find_str(keycolon.as_slice()) {
Some(colon) => {
let value = line.slice(colon + keycolon.len(),
line.len()).to_strbuf();
debug!("{}: {}", directive, value);
Some(value)
}
None => None
}
}