3 use std::io::prelude::*;
4 use std::io::BufReader;
5 use std::path::{Path, PathBuf};
7 use crate::common::{self, CompareMode, Config, Mode};
10 use crate::extract_gdb_version;
12 /// Whether to ignore the test.
13 #[derive(Clone, Copy, PartialEq, Debug)]
17 /// Ignore it totally.
19 /// Ignore only the gdb test, but run the lldb test.
21 /// Ignore only the lldb test, but run the gdb test.
26 pub fn can_run_gdb(&self) -> bool {
27 *self == Ignore::Run || *self == Ignore::IgnoreLldb
30 pub fn can_run_lldb(&self) -> bool {
31 *self == Ignore::Run || *self == Ignore::IgnoreGdb
34 pub fn no_gdb(&self) -> Ignore {
36 Ignore::Run => Ignore::IgnoreGdb,
37 Ignore::IgnoreGdb => Ignore::IgnoreGdb,
42 pub fn no_lldb(&self) -> Ignore {
44 Ignore::Run => Ignore::IgnoreLldb,
45 Ignore::IgnoreLldb => Ignore::IgnoreLldb,
51 /// The result of parse_cfg_name_directive.
52 #[derive(Clone, Copy, PartialEq, Debug)]
53 enum ParsedNameDirective {
58 /// Mode was DebugInfoBoth and this matched gdb.
60 /// Mode was DebugInfoBoth and this matched lldb.
64 /// Properties which must be known very early, before actually running
66 pub struct EarlyProps {
68 pub should_fail: bool,
70 pub revisions: Vec<String>,
74 pub fn from_file(config: &Config, testfile: &Path) -> Self {
75 let mut props = EarlyProps {
82 if config.mode == common::DebugInfoBoth {
83 if config.lldb_python_dir.is_none() {
84 props.ignore = props.ignore.no_lldb();
86 if config.gdb_version.is_none() {
87 props.ignore = props.ignore.no_gdb();
91 iter_header(testfile, None, &mut |ln| {
92 // we should check if any only-<platform> exists and if it exists
93 // and does not matches the current platform, skip the test
94 if props.ignore != Ignore::Ignore {
95 props.ignore = match config.parse_cfg_name_directive(ln, "ignore") {
96 ParsedNameDirective::Match => Ignore::Ignore,
97 ParsedNameDirective::NoMatch => props.ignore,
98 ParsedNameDirective::MatchGdb => props.ignore.no_gdb(),
99 ParsedNameDirective::MatchLldb => props.ignore.no_lldb(),
102 if config.has_cfg_prefix(ln, "only") {
103 props.ignore = match config.parse_cfg_name_directive(ln, "only") {
104 ParsedNameDirective::Match => props.ignore,
105 ParsedNameDirective::NoMatch => Ignore::Ignore,
106 ParsedNameDirective::MatchLldb => props.ignore.no_gdb(),
107 ParsedNameDirective::MatchGdb => props.ignore.no_lldb(),
111 if ignore_llvm(config, ln) {
112 props.ignore = Ignore::Ignore;
115 if config.run_clang_based_tests_with.is_none() &&
116 config.parse_needs_matching_clang(ln) {
117 props.ignore = Ignore::Ignore;
121 if (config.mode == common::DebugInfoGdb || config.mode == common::DebugInfoBoth) &&
122 props.ignore.can_run_gdb() && ignore_gdb(config, ln) {
123 props.ignore = props.ignore.no_gdb();
126 if (config.mode == common::DebugInfoLldb || config.mode == common::DebugInfoBoth) &&
127 props.ignore.can_run_lldb() && ignore_lldb(config, ln) {
128 props.ignore = props.ignore.no_lldb();
131 if let Some(s) = config.parse_aux_build(ln) {
135 if let Some(r) = config.parse_revisions(ln) {
136 props.revisions.extend(r);
139 props.should_fail = props.should_fail || config.parse_name_directive(ln, "should-fail");
144 fn ignore_gdb(config: &Config, line: &str) -> bool {
145 if let Some(actual_version) = config.gdb_version {
146 if line.starts_with("min-gdb-version") {
147 let (start_ver, end_ver) = extract_gdb_version_range(line);
149 if start_ver != end_ver {
150 panic!("Expected single GDB version")
152 // Ignore if actual version is smaller the minimum required
154 actual_version < start_ver
155 } else if line.starts_with("ignore-gdb-version") {
156 let (min_version, max_version) = extract_gdb_version_range(line);
158 if max_version < min_version {
159 panic!("Malformed GDB version range: max < min")
162 actual_version >= min_version && actual_version <= max_version
171 // Takes a directive of the form "ignore-gdb-version <version1> [- <version2>]",
172 // returns the numeric representation of <version1> and <version2> as
173 // tuple: (<version1> as u32, <version2> as u32)
174 // If the <version2> part is omitted, the second component of the tuple
175 // is the same as <version1>.
176 fn extract_gdb_version_range(line: &str) -> (u32, u32) {
177 const ERROR_MESSAGE: &'static str = "Malformed GDB version directive";
179 let range_components = line.split(&[' ', '-'][..])
180 .filter(|word| !word.is_empty())
181 .map(extract_gdb_version)
182 .skip_while(Option::is_none)
183 .take(3) // 3 or more = invalid, so take at most 3.
184 .collect::<Vec<Option<u32>>>();
186 match range_components.len() {
188 let v = range_components[0].unwrap();
192 let v_min = range_components[0].unwrap();
193 let v_max = range_components[1].expect(ERROR_MESSAGE);
196 _ => panic!(ERROR_MESSAGE),
200 fn ignore_lldb(config: &Config, line: &str) -> bool {
201 if let Some(ref actual_version) = config.lldb_version {
202 if line.starts_with("min-lldb-version") {
203 let min_version = line.trim_end()
206 .expect("Malformed lldb version directive");
207 // Ignore if actual version is smaller the minimum required
209 lldb_version_to_int(actual_version) < lldb_version_to_int(min_version)
210 } else if line.starts_with("rust-lldb") && !config.lldb_native_rust {
220 fn ignore_llvm(config: &Config, line: &str) -> bool {
221 if config.system_llvm && line.starts_with("no-system-llvm") {
224 if let Some(ref actual_version) = config.llvm_version {
225 if line.starts_with("min-llvm-version") {
226 let min_version = line.trim_end()
229 .expect("Malformed llvm version directive");
230 // Ignore if actual version is smaller the minimum required
232 &actual_version[..] < min_version
233 } else if line.starts_with("min-system-llvm-version") {
234 let min_version = line.trim_end()
237 .expect("Malformed llvm version directive");
238 // Ignore if using system LLVM and actual version
239 // is smaller the minimum required version
240 config.system_llvm && &actual_version[..] < min_version
241 } else if line.starts_with("ignore-llvm-version") {
242 // Syntax is: "ignore-llvm-version <version1> [- <version2>]"
243 let range_components = line.split(' ')
244 .skip(1) // Skip the directive.
246 .filter(|word| !word.is_empty() && word != &"-")
247 .take(3) // 3 or more = invalid, so take at most 3.
248 .collect::<Vec<&str>>();
249 match range_components.len() {
251 &actual_version[..] == range_components[0]
254 let v_min = range_components[0];
255 let v_max = range_components[1];
257 panic!("Malformed LLVM version range: max < min")
259 // Ignore if version lies inside of range.
260 &actual_version[..] >= v_min && &actual_version[..] <= v_max
262 _ => panic!("Malformed LLVM version directive"),
274 #[derive(Clone, Debug)]
275 pub struct TestProps {
276 // Lines that should be expected, in order, on standard out
277 pub error_patterns: Vec<String>,
278 // Extra flags to pass to the compiler
279 pub compile_flags: Vec<String>,
280 // Extra flags to pass when the compiled code is run (such as --bench)
281 pub run_flags: Option<String>,
282 // If present, the name of a file that this test should match when
284 pub pp_exact: Option<PathBuf>,
285 // Other crates that should be compiled (typically from the same
286 // directory as the test, but for backwards compatibility reasons
287 // we also check the auxiliary directory)
288 pub aux_builds: Vec<String>,
289 // A list of crates to pass '--extern-private name:PATH' flags for
290 // This should be a subset of 'aux_build'
291 // FIXME: Replace this with a better solution: https://github.com/rust-lang/rust/pull/54020
292 pub extern_private: Vec<String>,
293 // Environment settings to use for compiling
294 pub rustc_env: Vec<(String, String)>,
295 // Environment settings to use during execution
296 pub exec_env: Vec<(String, String)>,
297 // Lines to check if they appear in the expected debugger output
298 pub check_lines: Vec<String>,
299 // Build documentation for all specified aux-builds as well
300 pub build_aux_docs: bool,
301 // Flag to force a crate to be built with the host architecture
302 pub force_host: bool,
303 // Check stdout for error-pattern output as well as stderr
304 pub check_stdout: bool,
305 // For UI tests, allows compiler to generate arbitrary output to stdout
306 pub dont_check_compiler_stdout: bool,
307 // For UI tests, allows compiler to generate arbitrary output to stderr
308 pub dont_check_compiler_stderr: bool,
309 // Don't force a --crate-type=dylib flag on the command line
311 // Set this for example if you have an auxiliary test file that contains
312 // a proc-macro and needs `#![crate_type = "proc-macro"]`. This ensures
313 // that the aux file is compiled as a `proc-macro` and not as a `dylib`.
314 pub no_prefer_dynamic: bool,
315 // Run --pretty expanded when running pretty printing tests
316 pub pretty_expanded: bool,
317 // Which pretty mode are we testing with, default to 'normal'
318 pub pretty_mode: String,
319 // Only compare pretty output and don't try compiling
320 pub pretty_compare_only: bool,
321 // Patterns which must not appear in the output of a cfail test.
322 pub forbid_output: Vec<String>,
323 // Revisions to test for incremental compilation.
324 pub revisions: Vec<String>,
325 // Directory (if any) to use for incremental compilation. This is
326 // not set by end-users; rather it is set by the incremental
327 // testing harness and used when generating compilation
328 // arguments. (In particular, it propagates to the aux-builds.)
329 pub incremental_dir: Option<PathBuf>,
330 // Specifies that a test must actually compile without errors.
331 pub compile_pass: bool,
332 // rustdoc will test the output of the `--test` option
333 pub check_test_line_numbers_match: bool,
334 // The test must be compiled and run successfully. Only used in UI tests for now.
336 // Skip any codegen step and running the executable. Only for run-pass.
337 pub skip_codegen: bool,
338 // Do not pass `-Z ui-testing` to UI tests
339 pub disable_ui_testing_normalization: bool,
340 // customized normalization rules
341 pub normalize_stdout: Vec<(String, String)>,
342 pub normalize_stderr: Vec<(String, String)>,
343 pub failure_status: i32,
344 // Whether or not `rustfix` should apply the `CodeSuggestion`s of this test and compile the
345 // resulting Rust code.
346 pub run_rustfix: bool,
347 // If true, `rustfix` will only apply `MachineApplicable` suggestions.
348 pub rustfix_only_machine_applicable: bool,
349 pub assembly_output: Option<String>,
353 pub fn new() -> Self {
355 error_patterns: vec![],
356 compile_flags: vec![],
360 extern_private: vec![],
365 build_aux_docs: false,
368 dont_check_compiler_stdout: false,
369 dont_check_compiler_stderr: false,
370 no_prefer_dynamic: false,
371 pretty_expanded: false,
372 pretty_mode: "normal".to_string(),
373 pretty_compare_only: false,
374 forbid_output: vec![],
375 incremental_dir: None,
377 check_test_line_numbers_match: false,
380 disable_ui_testing_normalization: false,
381 normalize_stdout: vec![],
382 normalize_stderr: vec![],
385 rustfix_only_machine_applicable: false,
386 assembly_output: None,
390 pub fn from_aux_file(&self, testfile: &Path, cfg: Option<&str>, config: &Config) -> Self {
391 let mut props = TestProps::new();
393 // copy over select properties to the aux build:
394 props.incremental_dir = self.incremental_dir.clone();
395 props.load_from(testfile, cfg, config);
400 pub fn from_file(testfile: &Path, cfg: Option<&str>, config: &Config) -> Self {
401 let mut props = TestProps::new();
402 props.load_from(testfile, cfg, config);
406 /// Loads properties from `testfile` into `props`. If a property is
407 /// tied to a particular revision `foo` (indicated by writing
408 /// `//[foo]`), then the property is ignored unless `cfg` is
410 fn load_from(&mut self, testfile: &Path, cfg: Option<&str>, config: &Config) {
411 iter_header(testfile, cfg, &mut |ln| {
412 if let Some(ep) = config.parse_error_pattern(ln) {
413 self.error_patterns.push(ep);
416 if let Some(flags) = config.parse_compile_flags(ln) {
418 .extend(flags.split_whitespace().map(|s| s.to_owned()));
421 if let Some(edition) = config.parse_edition(ln) {
422 self.compile_flags.push(format!("--edition={}", edition));
425 if let Some(r) = config.parse_revisions(ln) {
426 self.revisions.extend(r);
429 if self.run_flags.is_none() {
430 self.run_flags = config.parse_run_flags(ln);
433 if self.pp_exact.is_none() {
434 self.pp_exact = config.parse_pp_exact(ln, testfile);
437 if !self.build_aux_docs {
438 self.build_aux_docs = config.parse_build_aux_docs(ln);
441 if !self.force_host {
442 self.force_host = config.parse_force_host(ln);
445 if !self.check_stdout {
446 self.check_stdout = config.parse_check_stdout(ln);
449 if !self.dont_check_compiler_stdout {
450 self.dont_check_compiler_stdout = config.parse_dont_check_compiler_stdout(ln);
453 if !self.dont_check_compiler_stderr {
454 self.dont_check_compiler_stderr = config.parse_dont_check_compiler_stderr(ln);
457 if !self.no_prefer_dynamic {
458 self.no_prefer_dynamic = config.parse_no_prefer_dynamic(ln);
461 if !self.pretty_expanded {
462 self.pretty_expanded = config.parse_pretty_expanded(ln);
465 if let Some(m) = config.parse_pretty_mode(ln) {
466 self.pretty_mode = m;
469 if !self.pretty_compare_only {
470 self.pretty_compare_only = config.parse_pretty_compare_only(ln);
473 if let Some(ab) = config.parse_aux_build(ln) {
474 self.aux_builds.push(ab);
477 if let Some(ep) = config.parse_extern_private(ln) {
478 self.extern_private.push(ep);
481 if let Some(ee) = config.parse_env(ln, "exec-env") {
482 self.exec_env.push(ee);
485 if let Some(ee) = config.parse_env(ln, "rustc-env") {
486 self.rustc_env.push(ee);
489 if let Some(cl) = config.parse_check_line(ln) {
490 self.check_lines.push(cl);
493 if let Some(of) = config.parse_forbid_output(ln) {
494 self.forbid_output.push(of);
497 if !self.check_test_line_numbers_match {
498 self.check_test_line_numbers_match = config.parse_check_test_line_numbers_match(ln);
502 self.run_pass = config.parse_run_pass(ln);
505 if !self.compile_pass {
506 // run-pass implies compile_pass
507 self.compile_pass = config.parse_compile_pass(ln) || self.run_pass;
510 if !self.skip_codegen {
511 self.skip_codegen = config.parse_skip_codegen(ln);
514 if !self.disable_ui_testing_normalization {
515 self.disable_ui_testing_normalization =
516 config.parse_disable_ui_testing_normalization(ln);
519 if let Some(rule) = config.parse_custom_normalization(ln, "normalize-stdout") {
520 self.normalize_stdout.push(rule);
522 if let Some(rule) = config.parse_custom_normalization(ln, "normalize-stderr") {
523 self.normalize_stderr.push(rule);
526 if let Some(code) = config.parse_failure_status(ln) {
527 self.failure_status = code;
530 if !self.run_rustfix {
531 self.run_rustfix = config.parse_run_rustfix(ln);
534 if !self.rustfix_only_machine_applicable {
535 self.rustfix_only_machine_applicable =
536 config.parse_rustfix_only_machine_applicable(ln);
539 if self.assembly_output.is_none() {
540 self.assembly_output = config.parse_assembly_output(ln);
544 if self.failure_status == -1 {
545 self.failure_status = match config.mode {
546 Mode::RunFail => 101,
551 for key in &["RUST_TEST_NOCAPTURE", "RUST_TEST_THREADS"] {
552 if let Ok(val) = env::var(key) {
553 if self.exec_env.iter().find(|&&(ref x, _)| x == key).is_none() {
554 self.exec_env.push(((*key).to_owned(), val))
561 fn iter_header(testfile: &Path, cfg: Option<&str>, it: &mut dyn FnMut(&str)) {
562 if testfile.is_dir() {
566 let comment = if testfile.to_string_lossy().ends_with(".rs") {
572 // FIXME: would be nice to allow some whitespace between comment and brace :)
573 // It took me like 2 days to debug why compile-flags weren’t taken into account for my test :)
574 let comment_with_brace = comment.to_string() + "[";
576 let rdr = BufReader::new(File::open(testfile).unwrap());
577 for ln in rdr.lines() {
578 // Assume that any directives will be found before the first
579 // module or function. This doesn't seem to be an optimization
580 // with a warm page cache. Maybe with a cold one.
581 let ln = ln.unwrap();
583 if ln.starts_with("fn") || ln.starts_with("mod") {
585 } else if ln.starts_with(&comment_with_brace) {
586 // A comment like `//[foo]` is specific to revision `foo`
587 if let Some(close_brace) = ln.find(']') {
588 let open_brace = ln.find('[').unwrap();
589 let lncfg = &ln[open_brace + 1 .. close_brace];
590 let matches = match cfg {
591 Some(s) => s == &lncfg[..],
595 it(ln[(close_brace + 1)..].trim_start());
598 panic!("malformed condition directive: expected `{}foo]`, found `{}`",
599 comment_with_brace, ln)
601 } else if ln.starts_with(comment) {
602 it(ln[comment.len() ..].trim_start());
609 fn parse_error_pattern(&self, line: &str) -> Option<String> {
610 self.parse_name_value_directive(line, "error-pattern")
613 fn parse_forbid_output(&self, line: &str) -> Option<String> {
614 self.parse_name_value_directive(line, "forbid-output")
617 fn parse_aux_build(&self, line: &str) -> Option<String> {
618 self.parse_name_value_directive(line, "aux-build")
619 .map(|r| r.trim().to_string())
622 fn parse_extern_private(&self, line: &str) -> Option<String> {
623 self.parse_name_value_directive(line, "extern-private")
626 fn parse_compile_flags(&self, line: &str) -> Option<String> {
627 self.parse_name_value_directive(line, "compile-flags")
630 fn parse_revisions(&self, line: &str) -> Option<Vec<String>> {
631 self.parse_name_value_directive(line, "revisions")
632 .map(|r| r.split_whitespace().map(|t| t.to_string()).collect())
635 fn parse_run_flags(&self, line: &str) -> Option<String> {
636 self.parse_name_value_directive(line, "run-flags")
639 fn parse_check_line(&self, line: &str) -> Option<String> {
640 self.parse_name_value_directive(line, "check")
643 fn parse_force_host(&self, line: &str) -> bool {
644 self.parse_name_directive(line, "force-host")
647 fn parse_build_aux_docs(&self, line: &str) -> bool {
648 self.parse_name_directive(line, "build-aux-docs")
651 fn parse_check_stdout(&self, line: &str) -> bool {
652 self.parse_name_directive(line, "check-stdout")
655 fn parse_dont_check_compiler_stdout(&self, line: &str) -> bool {
656 self.parse_name_directive(line, "dont-check-compiler-stdout")
659 fn parse_dont_check_compiler_stderr(&self, line: &str) -> bool {
660 self.parse_name_directive(line, "dont-check-compiler-stderr")
663 fn parse_no_prefer_dynamic(&self, line: &str) -> bool {
664 self.parse_name_directive(line, "no-prefer-dynamic")
667 fn parse_pretty_expanded(&self, line: &str) -> bool {
668 self.parse_name_directive(line, "pretty-expanded")
671 fn parse_pretty_mode(&self, line: &str) -> Option<String> {
672 self.parse_name_value_directive(line, "pretty-mode")
675 fn parse_pretty_compare_only(&self, line: &str) -> bool {
676 self.parse_name_directive(line, "pretty-compare-only")
679 fn parse_failure_status(&self, line: &str) -> Option<i32> {
680 match self.parse_name_value_directive(line, "failure-status") {
681 Some(code) => code.trim().parse::<i32>().ok(),
686 fn parse_compile_pass(&self, line: &str) -> bool {
687 self.parse_name_directive(line, "compile-pass")
690 fn parse_disable_ui_testing_normalization(&self, line: &str) -> bool {
691 self.parse_name_directive(line, "disable-ui-testing-normalization")
694 fn parse_check_test_line_numbers_match(&self, line: &str) -> bool {
695 self.parse_name_directive(line, "check-test-line-numbers-match")
698 fn parse_run_pass(&self, line: &str) -> bool {
699 self.parse_name_directive(line, "run-pass")
702 fn parse_skip_codegen(&self, line: &str) -> bool {
703 self.parse_name_directive(line, "skip-codegen")
706 fn parse_assembly_output(&self, line: &str) -> Option<String> {
707 self.parse_name_value_directive(line, "assembly-output")
708 .map(|r| r.trim().to_string())
711 fn parse_env(&self, line: &str, name: &str) -> Option<(String, String)> {
712 self.parse_name_value_directive(line, name).map(|nv| {
713 // nv is either FOO or FOO=BAR
714 let mut strs: Vec<String> = nv.splitn(2, '=').map(str::to_owned).collect();
717 1 => (strs.pop().unwrap(), String::new()),
719 let end = strs.pop().unwrap();
720 (strs.pop().unwrap(), end)
722 n => panic!("Expected 1 or 2 strings, not {}", n),
727 fn parse_pp_exact(&self, line: &str, testfile: &Path) -> Option<PathBuf> {
728 if let Some(s) = self.parse_name_value_directive(line, "pp-exact") {
729 Some(PathBuf::from(&s))
730 } else if self.parse_name_directive(line, "pp-exact") {
731 testfile.file_name().map(PathBuf::from)
737 fn parse_custom_normalization(&self, mut line: &str, prefix: &str) -> Option<(String, String)> {
738 if self.parse_cfg_name_directive(line, prefix) == ParsedNameDirective::Match {
739 let from = parse_normalization_string(&mut line)?;
740 let to = parse_normalization_string(&mut line)?;
747 fn parse_needs_matching_clang(&self, line: &str) -> bool {
748 self.parse_name_directive(line, "needs-matching-clang")
751 /// Parses a name-value directive which contains config-specific information, e.g., `ignore-x86`
752 /// or `normalize-stderr-32bit`.
753 fn parse_cfg_name_directive(&self, line: &str, prefix: &str) -> ParsedNameDirective {
754 if line.starts_with(prefix) && line.as_bytes().get(prefix.len()) == Some(&b'-') {
755 let name = line[prefix.len() + 1..]
756 .split(&[':', ' '][..])
761 util::matches_os(&self.target, name) || // target
762 name == util::get_arch(&self.target) || // architecture
763 name == util::get_pointer_width(&self.target) || // pointer width
764 name == self.stage_id.split('-').next().unwrap() || // stage
765 Some(name) == util::get_env(&self.target) || // env
766 (self.target != self.host && name == "cross-compile") ||
767 match self.compare_mode {
768 Some(CompareMode::Nll) => name == "compare-mode-nll",
769 Some(CompareMode::Polonius) => name == "compare-mode-polonius",
772 (cfg!(debug_assertions) && name == "debug") {
773 ParsedNameDirective::Match
776 common::DebugInfoBoth => {
778 ParsedNameDirective::MatchGdb
779 } else if name == "lldb" {
780 ParsedNameDirective::MatchLldb
782 ParsedNameDirective::NoMatch
785 common::DebugInfoGdb => if name == "gdb" {
786 ParsedNameDirective::Match
788 ParsedNameDirective::NoMatch
790 common::DebugInfoLldb => if name == "lldb" {
791 ParsedNameDirective::Match
793 ParsedNameDirective::NoMatch
795 common::Pretty => if name == "pretty" {
796 ParsedNameDirective::Match
798 ParsedNameDirective::NoMatch
800 _ => ParsedNameDirective::NoMatch,
804 ParsedNameDirective::NoMatch
808 fn has_cfg_prefix(&self, line: &str, prefix: &str) -> bool {
809 // returns whether this line contains this prefix or not. For prefix
810 // "ignore", returns true if line says "ignore-x86_64", "ignore-arch",
811 // "ignore-android" etc.
812 line.starts_with(prefix) && line.as_bytes().get(prefix.len()) == Some(&b'-')
815 fn parse_name_directive(&self, line: &str, directive: &str) -> bool {
816 // Ensure the directive is a whole word. Do not match "ignore-x86" when
817 // the line says "ignore-x86_64".
818 line.starts_with(directive) && match line.as_bytes().get(directive.len()) {
819 None | Some(&b' ') | Some(&b':') => true,
824 pub fn parse_name_value_directive(&self, line: &str, directive: &str) -> Option<String> {
825 let colon = directive.len();
826 if line.starts_with(directive) && line.as_bytes().get(colon) == Some(&b':') {
827 let value = line[(colon + 1)..].to_owned();
828 debug!("{}: {}", directive, value);
829 Some(expand_variables(value, self))
835 pub fn find_rust_src_root(&self) -> Option<PathBuf> {
836 let mut path = self.src_base.clone();
837 let path_postfix = Path::new("src/etc/lldb_batchmode.py");
840 if path.join(&path_postfix).is_file() {
848 fn parse_run_rustfix(&self, line: &str) -> bool {
849 self.parse_name_directive(line, "run-rustfix")
852 fn parse_rustfix_only_machine_applicable(&self, line: &str) -> bool {
853 self.parse_name_directive(line, "rustfix-only-machine-applicable")
856 fn parse_edition(&self, line: &str) -> Option<String> {
857 self.parse_name_value_directive(line, "edition")
861 pub fn lldb_version_to_int(version_string: &str) -> isize {
862 let error_string = format!(
863 "Encountered LLDB version string with unexpected format: {}",
866 version_string.parse().expect(&error_string)
869 fn expand_variables(mut value: String, config: &Config) -> String {
870 const CWD: &'static str = "{{cwd}}";
871 const SRC_BASE: &'static str = "{{src-base}}";
872 const BUILD_BASE: &'static str = "{{build-base}}";
874 if value.contains(CWD) {
875 let cwd = env::current_dir().unwrap();
876 value = value.replace(CWD, &cwd.to_string_lossy());
879 if value.contains(SRC_BASE) {
880 value = value.replace(SRC_BASE, &config.src_base.to_string_lossy());
883 if value.contains(BUILD_BASE) {
884 value = value.replace(BUILD_BASE, &config.build_base.to_string_lossy());
890 /// Finds the next quoted string `"..."` in `line`, and extract the content from it. Move the `line`
891 /// variable after the end of the quoted string.
896 /// let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits)\".";
897 /// let first = parse_normalization_string(&mut s);
898 /// assert_eq!(first, Some("something (32 bits)".to_owned()));
899 /// assert_eq!(s, " -> \"something ($WORD bits)\".");
901 fn parse_normalization_string(line: &mut &str) -> Option<String> {
902 // FIXME support escapes in strings.
903 let begin = line.find('"')? + 1;
904 let end = line[begin..].find('"')? + begin;
905 let result = line[begin..end].to_owned();
906 *line = &line[end + 1..];
911 fn test_parse_normalization_string() {
912 let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits)\".";
913 let first = parse_normalization_string(&mut s);
914 assert_eq!(first, Some("something (32 bits)".to_owned()));
915 assert_eq!(s, " -> \"something ($WORD bits)\".");
917 // Nothing to normalize (No quotes)
918 let mut s = "normalize-stderr-32bit: something (32 bits) -> something ($WORD bits).";
919 let first = parse_normalization_string(&mut s);
920 assert_eq!(first, None);
921 assert_eq!(s, r#"normalize-stderr-32bit: something (32 bits) -> something ($WORD bits)."#);
923 // Nothing to normalize (Only a single quote)
924 let mut s = "normalize-stderr-32bit: \"something (32 bits) -> something ($WORD bits).";
925 let first = parse_normalization_string(&mut s);
926 assert_eq!(first, None);
927 assert_eq!(s, "normalize-stderr-32bit: \"something (32 bits) -> something ($WORD bits).");
929 // Nothing to normalize (Three quotes)
930 let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits).";
931 let first = parse_normalization_string(&mut s);
932 assert_eq!(first, Some("something (32 bits)".to_owned()));
933 assert_eq!(s, " -> \"something ($WORD bits).");