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import option;
import str;
import std::io;
import std::fs;
import common::config;
export test_props;
export load_props;
export is_test_ignored;
type test_props = {
// Lines that should be expected, in order, on standard out
error_patterns: [str],
// Extra flags to pass to the compiler
compile_flags: option::t<str>,
// If present, the name of a file that this test should match when
// pretty-printed
pp_exact: option::t<str>
};
// Load any test directives embedded in the file
fn load_props(testfile: str) -> test_props {
let error_patterns = [];
let compile_flags = option::none;
let pp_exact = option::none;
iter_header(testfile) {|ln|
alt parse_error_pattern(ln) {
option::some(ep) { error_patterns += [ep]; }
option::none. { }
};
if option::is_none(compile_flags) {
compile_flags = parse_compile_flags(ln);
}
if option::is_none(pp_exact) {
pp_exact = parse_pp_exact(ln, testfile);
}
};
ret {
error_patterns: error_patterns,
compile_flags: compile_flags,
pp_exact: pp_exact
};
}
fn is_test_ignored(config: config, testfile: str) -> bool {
let found = false;
iter_header(testfile) {|ln|
// FIXME: Can't return or break from iterator
found = found || parse_name_directive(ln, "xfail-test");
found = found || parse_name_directive(ln, xfail_target());
if (config.mode == common::mode_pretty) {
found = found || parse_name_directive(ln, "xfail-pretty");
}
};
ret found;
fn xfail_target() -> str {
"xfail-" + std::os::target_os()
}
}
fn iter_header(testfile: str, it: block(str)) {
let rdr = result::get(io::file_reader(testfile));
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") {
break;
} else { it(ln); }
}
}
fn parse_error_pattern(line: str) -> option::t<str> {
parse_name_value_directive(line, "error-pattern")
}
fn parse_compile_flags(line: str) -> option::t<str> {
parse_name_value_directive(line, "compile-flags")
}
fn parse_pp_exact(line: str, testfile: str) -> option::t<str> {
alt parse_name_value_directive(line, "pp-exact") {
option::some(s) { option::some(s) }
option::none. {
if parse_name_directive(line, "pp-exact") {
option::some(fs::basename(testfile))
} else {
option::none
}
}
}
}
fn parse_name_directive(line: str, directive: str) -> bool {
str::find(line, directive) >= 0
}
fn parse_name_value_directive(line: str,
directive: str) -> option::t<str> {
let keycolon = directive + ":";
if str::find(line, keycolon) >= 0 {
let colon = str::find(line, keycolon) as uint;
let value =
str::slice(line, colon + str::byte_len(keycolon),
str::byte_len(line));
log #fmt("%s: %s", directive,
value);
option::some(value)
} else { option::none }
}
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