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use std::env;
use std::fs::File;
use std::io::prelude::*;
use std::io::BufReader;
use std::path::{Path, PathBuf};
use log::*;
use crate::common::{self, CompareMode, Config, Mode, PassMode};
use crate::util;
use crate::extract_gdb_version;
/// Whether to ignore the test.
#[derive(Clone, Copy, PartialEq, Debug)]
pub enum Ignore {
/// Runs it.
Run,
/// Ignore it totally.
Ignore,
/// Ignore only the gdb test, but run the lldb test.
IgnoreGdb,
/// Ignore only the lldb test, but run the gdb test.
IgnoreLldb,
}
impl Ignore {
pub fn can_run_gdb(&self) -> bool {
*self == Ignore::Run || *self == Ignore::IgnoreLldb
}
pub fn can_run_lldb(&self) -> bool {
*self == Ignore::Run || *self == Ignore::IgnoreGdb
}
pub fn no_gdb(&self) -> Ignore {
match *self {
Ignore::Run => Ignore::IgnoreGdb,
Ignore::IgnoreGdb => Ignore::IgnoreGdb,
_ => Ignore::Ignore,
}
}
pub fn no_lldb(&self) -> Ignore {
match *self {
Ignore::Run => Ignore::IgnoreLldb,
Ignore::IgnoreLldb => Ignore::IgnoreLldb,
_ => Ignore::Ignore,
}
}
}
/// The result of parse_cfg_name_directive.
#[derive(Clone, Copy, PartialEq, Debug)]
enum ParsedNameDirective {
/// No match.
NoMatch,
/// Match.
Match,
/// Mode was DebugInfoGdbLldb and this matched gdb.
MatchGdb,
/// Mode was DebugInfoGdbLldb and this matched lldb.
MatchLldb,
}
/// Properties which must be known very early, before actually running
/// the test.
pub struct EarlyProps {
pub ignore: Ignore,
pub should_fail: bool,
pub aux: Vec<String>,
pub revisions: Vec<String>,
}
impl EarlyProps {
pub fn from_file(config: &Config, testfile: &Path) -> Self {
let mut props = EarlyProps {
ignore: Ignore::Run,
should_fail: false,
aux: Vec::new(),
revisions: vec![],
};
if config.mode == common::DebugInfoGdbLldb {
if config.lldb_python_dir.is_none() {
props.ignore = props.ignore.no_lldb();
}
if config.gdb_version.is_none() {
props.ignore = props.ignore.no_gdb();
}
} else if config.mode == common::DebugInfoCdb {
if config.cdb.is_none() {
props.ignore = Ignore::Ignore;
}
}
let rustc_has_profiler_support = env::var_os("RUSTC_PROFILER_SUPPORT").is_some();
let rustc_has_sanitizer_support = env::var_os("RUSTC_SANITIZER_SUPPORT").is_some();
iter_header(testfile, None, &mut |ln| {
// we should check if any only-<platform> exists and if it exists
// and does not matches the current platform, skip the test
if props.ignore != Ignore::Ignore {
props.ignore = match config.parse_cfg_name_directive(ln, "ignore") {
ParsedNameDirective::Match => Ignore::Ignore,
ParsedNameDirective::NoMatch => props.ignore,
ParsedNameDirective::MatchGdb => props.ignore.no_gdb(),
ParsedNameDirective::MatchLldb => props.ignore.no_lldb(),
};
if config.has_cfg_prefix(ln, "only") {
props.ignore = match config.parse_cfg_name_directive(ln, "only") {
ParsedNameDirective::Match => props.ignore,
ParsedNameDirective::NoMatch => Ignore::Ignore,
ParsedNameDirective::MatchLldb => props.ignore.no_gdb(),
ParsedNameDirective::MatchGdb => props.ignore.no_lldb(),
};
}
if ignore_llvm(config, ln) {
props.ignore = Ignore::Ignore;
}
if config.run_clang_based_tests_with.is_none() &&
config.parse_needs_matching_clang(ln) {
props.ignore = Ignore::Ignore;
}
if !rustc_has_profiler_support &&
config.parse_needs_profiler_support(ln) {
props.ignore = Ignore::Ignore;
}
if !rustc_has_sanitizer_support &&
config.parse_needs_sanitizer_support(ln) {
props.ignore = Ignore::Ignore;
}
}
if (config.mode == common::DebugInfoGdb || config.mode == common::DebugInfoGdbLldb) &&
props.ignore.can_run_gdb() && ignore_gdb(config, ln) {
props.ignore = props.ignore.no_gdb();
}
if (config.mode == common::DebugInfoLldb || config.mode == common::DebugInfoGdbLldb) &&
props.ignore.can_run_lldb() && ignore_lldb(config, ln) {
props.ignore = props.ignore.no_lldb();
}
if let Some(s) = config.parse_aux_build(ln) {
props.aux.push(s);
}
if let Some(r) = config.parse_revisions(ln) {
props.revisions.extend(r);
}
props.should_fail = props.should_fail || config.parse_name_directive(ln, "should-fail");
});
return props;
fn ignore_gdb(config: &Config, line: &str) -> bool {
if let Some(actual_version) = config.gdb_version {
if line.starts_with("min-gdb-version") {
let (start_ver, end_ver) = extract_gdb_version_range(line);
if start_ver != end_ver {
panic!("Expected single GDB version")
}
// Ignore if actual version is smaller the minimum required
// version
actual_version < start_ver
} else if line.starts_with("ignore-gdb-version") {
let (min_version, max_version) = extract_gdb_version_range(line);
if max_version < min_version {
panic!("Malformed GDB version range: max < min")
}
actual_version >= min_version && actual_version <= max_version
} else {
false
}
} else {
false
}
}
// Takes a directive of the form "ignore-gdb-version <version1> [- <version2>]",
// returns the numeric representation of <version1> and <version2> as
// tuple: (<version1> as u32, <version2> as u32)
// If the <version2> part is omitted, the second component of the tuple
// is the same as <version1>.
fn extract_gdb_version_range(line: &str) -> (u32, u32) {
const ERROR_MESSAGE: &'static str = "Malformed GDB version directive";
let range_components = line.split(&[' ', '-'][..])
.filter(|word| !word.is_empty())
.map(extract_gdb_version)
.skip_while(Option::is_none)
.take(3) // 3 or more = invalid, so take at most 3.
.collect::<Vec<Option<u32>>>();
match range_components.len() {
1 => {
let v = range_components[0].unwrap();
(v, v)
}
2 => {
let v_min = range_components[0].unwrap();
let v_max = range_components[1].expect(ERROR_MESSAGE);
(v_min, v_max)
}
_ => panic!(ERROR_MESSAGE),
}
}
fn ignore_lldb(config: &Config, line: &str) -> bool {
if let Some(ref actual_version) = config.lldb_version {
if line.starts_with("min-lldb-version") {
let min_version = line.trim_end()
.rsplit(' ')
.next()
.expect("Malformed lldb version directive");
// Ignore if actual version is smaller the minimum required
// version
lldb_version_to_int(actual_version) < lldb_version_to_int(min_version)
} else if line.starts_with("rust-lldb") && !config.lldb_native_rust {
true
} else {
false
}
} else {
false
}
}
fn ignore_llvm(config: &Config, line: &str) -> bool {
if config.system_llvm && line.starts_with("no-system-llvm") {
return true;
}
if let Some(ref actual_version) = config.llvm_version {
if line.starts_with("min-llvm-version") {
let min_version = line.trim_end()
.rsplit(' ')
.next()
.expect("Malformed llvm version directive");
// Ignore if actual version is smaller the minimum required
// version
&actual_version[..] < min_version
} else if line.starts_with("min-system-llvm-version") {
let min_version = line.trim_end()
.rsplit(' ')
.next()
.expect("Malformed llvm version directive");
// Ignore if using system LLVM and actual version
// is smaller the minimum required version
config.system_llvm && &actual_version[..] < min_version
} else if line.starts_with("ignore-llvm-version") {
// Syntax is: "ignore-llvm-version <version1> [- <version2>]"
let range_components = line.split(' ')
.skip(1) // Skip the directive.
.map(|s| s.trim())
.filter(|word| !word.is_empty() && word != &"-")
.take(3) // 3 or more = invalid, so take at most 3.
.collect::<Vec<&str>>();
match range_components.len() {
1 => {
&actual_version[..] == range_components[0]
}
2 => {
let v_min = range_components[0];
let v_max = range_components[1];
if v_max < v_min {
panic!("Malformed LLVM version range: max < min")
}
// Ignore if version lies inside of range.
&actual_version[..] >= v_min && &actual_version[..] <= v_max
}
_ => panic!("Malformed LLVM version directive"),
}
} else {
false
}
} else {
false
}
}
}
}
#[derive(Clone, Debug)]
pub struct TestProps {
// Lines that should be expected, in order, on standard out
pub error_patterns: Vec<String>,
// Extra flags to pass to the compiler
pub compile_flags: Vec<String>,
// Extra flags to pass when the compiled code is run (such as --bench)
pub run_flags: Option<String>,
// If present, the name of a file that this test should match when
// pretty-printed
pub pp_exact: Option<PathBuf>,
// Other crates that should be compiled (typically from the same
// directory as the test, but for backwards compatibility reasons
// we also check the auxiliary directory)
pub aux_builds: Vec<String>,
// A list of crates to pass '--extern-private name:PATH' flags for
// This should be a subset of 'aux_build'
// FIXME: Replace this with a better solution: https://github.com/rust-lang/rust/pull/54020
pub extern_private: Vec<String>,
// Environment settings to use for compiling
pub rustc_env: Vec<(String, String)>,
// Environment variables to unset prior to compiling.
// Variables are unset before applying 'rustc_env'.
pub unset_rustc_env: Vec<String>,
// Environment settings to use during execution
pub exec_env: Vec<(String, String)>,
// Lines to check if they appear in the expected debugger output
pub check_lines: Vec<String>,
// Build documentation for all specified aux-builds as well
pub build_aux_docs: bool,
// 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,
// For UI tests, allows compiler to generate arbitrary output to stdout
pub dont_check_compiler_stdout: bool,
// For UI tests, allows compiler to generate arbitrary output to stderr
pub dont_check_compiler_stderr: bool,
// Don't force a --crate-type=dylib flag on the command line
//
// Set this for example if you have an auxiliary test file that contains
// a proc-macro and needs `#![crate_type = "proc-macro"]`. This ensures
// that the aux file is compiled as a `proc-macro` and not as a `dylib`.
pub no_prefer_dynamic: bool,
// Run --pretty expanded when running pretty printing tests
pub pretty_expanded: bool,
// Which pretty mode are we testing with, default to 'normal'
pub pretty_mode: String,
// Only compare pretty output and don't try compiling
pub pretty_compare_only: bool,
// Patterns which must not appear in the output of a cfail test.
pub forbid_output: Vec<String>,
// Revisions to test for incremental compilation.
pub revisions: Vec<String>,
// Directory (if any) to use for incremental compilation. This is
// not set by end-users; rather it is set by the incremental
// testing harness and used when generating compilation
// arguments. (In particular, it propagates to the aux-builds.)
pub incremental_dir: Option<PathBuf>,
// How far should the test proceed while still passing.
pass_mode: Option<PassMode>,
// Ignore `--pass` overrides from the command line for this test.
ignore_pass: bool,
// rustdoc will test the output of the `--test` option
pub check_test_line_numbers_match: bool,
// Do not pass `-Z ui-testing` to UI tests
pub disable_ui_testing_normalization: bool,
// customized normalization rules
pub normalize_stdout: Vec<(String, String)>,
pub normalize_stderr: Vec<(String, String)>,
pub failure_status: i32,
// Whether or not `rustfix` should apply the `CodeSuggestion`s of this test and compile the
// resulting Rust code.
pub run_rustfix: bool,
// If true, `rustfix` will only apply `MachineApplicable` suggestions.
pub rustfix_only_machine_applicable: bool,
pub assembly_output: Option<String>,
}
impl TestProps {
pub fn new() -> Self {
TestProps {
error_patterns: vec![],
compile_flags: vec![],
run_flags: None,
pp_exact: None,
aux_builds: vec![],
extern_private: vec![],
revisions: vec![],
rustc_env: vec![],
unset_rustc_env: vec![],
exec_env: vec![],
check_lines: vec![],
build_aux_docs: false,
force_host: false,
check_stdout: false,
dont_check_compiler_stdout: false,
dont_check_compiler_stderr: false,
no_prefer_dynamic: false,
pretty_expanded: false,
pretty_mode: "normal".to_string(),
pretty_compare_only: false,
forbid_output: vec![],
incremental_dir: None,
pass_mode: None,
ignore_pass: false,
check_test_line_numbers_match: false,
disable_ui_testing_normalization: false,
normalize_stdout: vec![],
normalize_stderr: vec![],
failure_status: -1,
run_rustfix: false,
rustfix_only_machine_applicable: false,
assembly_output: None,
}
}
pub fn from_aux_file(&self, testfile: &Path, cfg: Option<&str>, config: &Config) -> Self {
let mut props = TestProps::new();
// copy over select properties to the aux build:
props.incremental_dir = self.incremental_dir.clone();
props.load_from(testfile, cfg, config);
props
}
pub fn from_file(testfile: &Path, cfg: Option<&str>, config: &Config) -> Self {
let mut props = TestProps::new();
props.load_from(testfile, cfg, config);
props
}
/// Loads properties from `testfile` into `props`. If a property is
/// tied to a particular revision `foo` (indicated by writing
/// `//[foo]`), then the property is ignored unless `cfg` is
/// `Some("foo")`.
fn load_from(&mut self, testfile: &Path, cfg: Option<&str>, config: &Config) {
iter_header(testfile, cfg, &mut |ln| {
if let Some(ep) = config.parse_error_pattern(ln) {
self.error_patterns.push(ep);
}
if let Some(flags) = config.parse_compile_flags(ln) {
self.compile_flags
.extend(flags.split_whitespace().map(|s| s.to_owned()));
}
if let Some(edition) = config.parse_edition(ln) {
self.compile_flags.push(format!("--edition={}", edition));
}
if let Some(r) = config.parse_revisions(ln) {
self.revisions.extend(r);
}
if self.run_flags.is_none() {
self.run_flags = config.parse_run_flags(ln);
}
if self.pp_exact.is_none() {
self.pp_exact = config.parse_pp_exact(ln, testfile);
}
if !self.build_aux_docs {
self.build_aux_docs = config.parse_build_aux_docs(ln);
}
if !self.force_host {
self.force_host = config.parse_force_host(ln);
}
if !self.check_stdout {
self.check_stdout = config.parse_check_stdout(ln);
}
if !self.dont_check_compiler_stdout {
self.dont_check_compiler_stdout = config.parse_dont_check_compiler_stdout(ln);
}
if !self.dont_check_compiler_stderr {
self.dont_check_compiler_stderr = config.parse_dont_check_compiler_stderr(ln);
}
if !self.no_prefer_dynamic {
self.no_prefer_dynamic = config.parse_no_prefer_dynamic(ln);
}
if !self.pretty_expanded {
self.pretty_expanded = config.parse_pretty_expanded(ln);
}
if let Some(m) = config.parse_pretty_mode(ln) {
self.pretty_mode = m;
}
if !self.pretty_compare_only {
self.pretty_compare_only = config.parse_pretty_compare_only(ln);
}
if let Some(ab) = config.parse_aux_build(ln) {
self.aux_builds.push(ab);
}
if let Some(ep) = config.parse_extern_private(ln) {
self.extern_private.push(ep);
}
if let Some(ee) = config.parse_env(ln, "exec-env") {
self.exec_env.push(ee);
}
if let Some(ee) = config.parse_env(ln, "rustc-env") {
self.rustc_env.push(ee);
}
if let Some(ev) = config.parse_name_value_directive(ln, "unset-rustc-env") {
self.unset_rustc_env.push(ev);
}
if let Some(cl) = config.parse_check_line(ln) {
self.check_lines.push(cl);
}
if let Some(of) = config.parse_forbid_output(ln) {
self.forbid_output.push(of);
}
if !self.check_test_line_numbers_match {
self.check_test_line_numbers_match = config.parse_check_test_line_numbers_match(ln);
}
self.update_pass_mode(ln, cfg, config);
if !self.ignore_pass {
self.ignore_pass = config.parse_ignore_pass(ln);
}
if !self.disable_ui_testing_normalization {
self.disable_ui_testing_normalization =
config.parse_disable_ui_testing_normalization(ln);
}
if let Some(rule) = config.parse_custom_normalization(ln, "normalize-stdout") {
self.normalize_stdout.push(rule);
}
if let Some(rule) = config.parse_custom_normalization(ln, "normalize-stderr") {
self.normalize_stderr.push(rule);
}
if let Some(code) = config.parse_failure_status(ln) {
self.failure_status = code;
}
if !self.run_rustfix {
self.run_rustfix = config.parse_run_rustfix(ln);
}
if !self.rustfix_only_machine_applicable {
self.rustfix_only_machine_applicable =
config.parse_rustfix_only_machine_applicable(ln);
}
if self.assembly_output.is_none() {
self.assembly_output = config.parse_assembly_output(ln);
}
});
if self.failure_status == -1 {
self.failure_status = match config.mode {
Mode::RunFail => 101,
_ => 1,
};
}
for key in &["RUST_TEST_NOCAPTURE", "RUST_TEST_THREADS"] {
if let Ok(val) = env::var(key) {
if self.exec_env.iter().find(|&&(ref x, _)| x == key).is_none() {
self.exec_env.push(((*key).to_owned(), val))
}
}
}
}
fn update_pass_mode(&mut self, ln: &str, revision: Option<&str>, config: &Config) {
let check_no_run = |s| {
if config.mode != Mode::Ui && config.mode != Mode::Incremental {
panic!("`{}` header is only supported in UI and incremental tests", s);
}
if config.mode == Mode::Incremental &&
!revision.map_or(false, |r| r.starts_with("cfail")) &&
!self.revisions.iter().all(|r| r.starts_with("cfail")) {
panic!("`{}` header is only supported in `cfail` incremental tests", s);
}
};
let pass_mode = if config.parse_name_directive(ln, "check-pass") {
check_no_run("check-pass");
Some(PassMode::Check)
} else if config.parse_name_directive(ln, "build-pass") {
check_no_run("build-pass");
Some(PassMode::Build)
} else if config.parse_name_directive(ln, "run-pass") {
if config.mode != Mode::Ui && config.mode != Mode::RunPass /* compatibility */ {
panic!("`run-pass` header is only supported in UI tests")
}
Some(PassMode::Run)
} else {
None
};
match (self.pass_mode, pass_mode) {
(None, Some(_)) => self.pass_mode = pass_mode,
(Some(_), Some(_)) => panic!("multiple `*-pass` headers in a single test"),
(_, None) => {}
}
}
pub fn pass_mode(&self, config: &Config) -> Option<PassMode> {
if !self.ignore_pass {
if let (mode @ Some(_), Some(_)) = (config.force_pass_mode, self.pass_mode) {
return mode;
}
}
self.pass_mode
}
}
fn iter_header(testfile: &Path, cfg: Option<&str>, it: &mut dyn FnMut(&str)) {
if testfile.is_dir() {
return;
}
let comment = if testfile.to_string_lossy().ends_with(".rs") {
"//"
} else {
"#"
};
// FIXME: would be nice to allow some whitespace between comment and brace :)
// It took me like 2 days to debug why compile-flags weren’t taken into account for my test :)
let comment_with_brace = comment.to_string() + "[";
let rdr = BufReader::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();
let ln = ln.trim();
if ln.starts_with("fn") || ln.starts_with("mod") {
return;
} else if ln.starts_with(&comment_with_brace) {
// A comment like `//[foo]` is specific to revision `foo`
if let Some(close_brace) = ln.find(']') {
let open_brace = ln.find('[').unwrap();
let lncfg = &ln[open_brace + 1 .. close_brace];
let matches = match cfg {
Some(s) => s == &lncfg[..],
None => false,
};
if matches {
it(ln[(close_brace + 1)..].trim_start());
}
} else {
panic!("malformed condition directive: expected `{}foo]`, found `{}`",
comment_with_brace, ln)
}
} else if ln.starts_with(comment) {
it(ln[comment.len() ..].trim_start());
}
}
return;
}
impl Config {
fn parse_error_pattern(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "error-pattern")
}
fn parse_forbid_output(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "forbid-output")
}
fn parse_aux_build(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "aux-build")
.map(|r| r.trim().to_string())
}
fn parse_extern_private(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "extern-private")
}
fn parse_compile_flags(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "compile-flags")
}
fn parse_revisions(&self, line: &str) -> Option<Vec<String>> {
self.parse_name_value_directive(line, "revisions")
.map(|r| r.split_whitespace().map(|t| t.to_string()).collect())
}
fn parse_run_flags(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "run-flags")
}
fn parse_check_line(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "check")
}
fn parse_force_host(&self, line: &str) -> bool {
self.parse_name_directive(line, "force-host")
}
fn parse_build_aux_docs(&self, line: &str) -> bool {
self.parse_name_directive(line, "build-aux-docs")
}
fn parse_check_stdout(&self, line: &str) -> bool {
self.parse_name_directive(line, "check-stdout")
}
fn parse_dont_check_compiler_stdout(&self, line: &str) -> bool {
self.parse_name_directive(line, "dont-check-compiler-stdout")
}
fn parse_dont_check_compiler_stderr(&self, line: &str) -> bool {
self.parse_name_directive(line, "dont-check-compiler-stderr")
}
fn parse_no_prefer_dynamic(&self, line: &str) -> bool {
self.parse_name_directive(line, "no-prefer-dynamic")
}
fn parse_pretty_expanded(&self, line: &str) -> bool {
self.parse_name_directive(line, "pretty-expanded")
}
fn parse_pretty_mode(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "pretty-mode")
}
fn parse_pretty_compare_only(&self, line: &str) -> bool {
self.parse_name_directive(line, "pretty-compare-only")
}
fn parse_failure_status(&self, line: &str) -> Option<i32> {
match self.parse_name_value_directive(line, "failure-status") {
Some(code) => code.trim().parse::<i32>().ok(),
_ => None,
}
}
fn parse_disable_ui_testing_normalization(&self, line: &str) -> bool {
self.parse_name_directive(line, "disable-ui-testing-normalization")
}
fn parse_check_test_line_numbers_match(&self, line: &str) -> bool {
self.parse_name_directive(line, "check-test-line-numbers-match")
}
fn parse_ignore_pass(&self, line: &str) -> bool {
self.parse_name_directive(line, "ignore-pass")
}
fn parse_assembly_output(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "assembly-output")
.map(|r| r.trim().to_string())
}
fn parse_env(&self, line: &str, name: &str) -> Option<(String, String)> {
self.parse_name_value_directive(line, name).map(|nv| {
// nv is either FOO or FOO=BAR
let mut strs: Vec<String> = nv.splitn(2, '=').map(str::to_owned).collect();
match strs.len() {
1 => (strs.pop().unwrap(), String::new()),
2 => {
let end = strs.pop().unwrap();
(strs.pop().unwrap(), end)
}
n => panic!("Expected 1 or 2 strings, not {}", n),
}
})
}
fn parse_pp_exact(&self, line: &str, testfile: &Path) -> Option<PathBuf> {
if let Some(s) = self.parse_name_value_directive(line, "pp-exact") {
Some(PathBuf::from(&s))
} else if self.parse_name_directive(line, "pp-exact") {
testfile.file_name().map(PathBuf::from)
} else {
None
}
}
fn parse_custom_normalization(&self, mut line: &str, prefix: &str) -> Option<(String, String)> {
if self.parse_cfg_name_directive(line, prefix) == ParsedNameDirective::Match {
let from = parse_normalization_string(&mut line)?;
let to = parse_normalization_string(&mut line)?;
Some((from, to))
} else {
None
}
}
fn parse_needs_matching_clang(&self, line: &str) -> bool {
self.parse_name_directive(line, "needs-matching-clang")
}
fn parse_needs_profiler_support(&self, line: &str) -> bool {
self.parse_name_directive(line, "needs-profiler-support")
}
fn parse_needs_sanitizer_support(&self, line: &str) -> bool {
self.parse_name_directive(line, "needs-sanitizer-support")
}
/// Parses a name-value directive which contains config-specific information, e.g., `ignore-x86`
/// or `normalize-stderr-32bit`.
fn parse_cfg_name_directive(&self, line: &str, prefix: &str) -> ParsedNameDirective {
if line.starts_with(prefix) && line.as_bytes().get(prefix.len()) == Some(&b'-') {
let name = line[prefix.len() + 1..]
.split(&[':', ' '][..])
.next()
.unwrap();
if name == "test" ||
util::matches_os(&self.target, name) || // target
name == util::get_arch(&self.target) || // architecture
name == util::get_pointer_width(&self.target) || // pointer width
name == self.stage_id.split('-').next().unwrap() || // stage
Some(name) == util::get_env(&self.target) || // env
(self.target != self.host && name == "cross-compile") ||
match self.compare_mode {
Some(CompareMode::Nll) => name == "compare-mode-nll",
Some(CompareMode::Polonius) => name == "compare-mode-polonius",
None => false,
} ||
(cfg!(debug_assertions) && name == "debug") {
ParsedNameDirective::Match
} else {
match self.mode {
common::DebugInfoGdbLldb => {
if name == "gdb" {
ParsedNameDirective::MatchGdb
} else if name == "lldb" {
ParsedNameDirective::MatchLldb
} else {
ParsedNameDirective::NoMatch
}
},
common::DebugInfoCdb => if name == "cdb" {
ParsedNameDirective::Match
} else {
ParsedNameDirective::NoMatch
},
common::DebugInfoGdb => if name == "gdb" {
ParsedNameDirective::Match
} else {
ParsedNameDirective::NoMatch
},
common::DebugInfoLldb => if name == "lldb" {
ParsedNameDirective::Match
} else {
ParsedNameDirective::NoMatch
},
common::Pretty => if name == "pretty" {
ParsedNameDirective::Match
} else {
ParsedNameDirective::NoMatch
},
_ => ParsedNameDirective::NoMatch,
}
}
} else {
ParsedNameDirective::NoMatch
}
}
fn has_cfg_prefix(&self, line: &str, prefix: &str) -> bool {
// returns whether this line contains this prefix or not. For prefix
// "ignore", returns true if line says "ignore-x86_64", "ignore-arch",
// "ignore-android" etc.
line.starts_with(prefix) && line.as_bytes().get(prefix.len()) == Some(&b'-')
}
fn parse_name_directive(&self, line: &str, directive: &str) -> bool {
// Ensure the directive is a whole word. Do not match "ignore-x86" when
// the line says "ignore-x86_64".
line.starts_with(directive) && match line.as_bytes().get(directive.len()) {
None | Some(&b' ') | Some(&b':') => true,
_ => false,
}
}
pub fn parse_name_value_directive(&self, line: &str, directive: &str) -> Option<String> {
let colon = directive.len();
if line.starts_with(directive) && line.as_bytes().get(colon) == Some(&b':') {
let value = line[(colon + 1)..].to_owned();
debug!("{}: {}", directive, value);
Some(expand_variables(value, self))
} else {
None
}
}
pub fn find_rust_src_root(&self) -> Option<PathBuf> {
let mut path = self.src_base.clone();
let path_postfix = Path::new("src/etc/lldb_batchmode.py");
while path.pop() {
if path.join(&path_postfix).is_file() {
return Some(path);
}
}
None
}
fn parse_run_rustfix(&self, line: &str) -> bool {
self.parse_name_directive(line, "run-rustfix")
}
fn parse_rustfix_only_machine_applicable(&self, line: &str) -> bool {
self.parse_name_directive(line, "rustfix-only-machine-applicable")
}
fn parse_edition(&self, line: &str) -> Option<String> {
self.parse_name_value_directive(line, "edition")
}
}
pub fn lldb_version_to_int(version_string: &str) -> isize {
let error_string = format!(
"Encountered LLDB version string with unexpected format: {}",
version_string
);
version_string.parse().expect(&error_string)
}
fn expand_variables(mut value: String, config: &Config) -> String {
const CWD: &'static str = "{{cwd}}";
const SRC_BASE: &'static str = "{{src-base}}";
const BUILD_BASE: &'static str = "{{build-base}}";
if value.contains(CWD) {
let cwd = env::current_dir().unwrap();
value = value.replace(CWD, &cwd.to_string_lossy());
}
if value.contains(SRC_BASE) {
value = value.replace(SRC_BASE, &config.src_base.to_string_lossy());
}
if value.contains(BUILD_BASE) {
value = value.replace(BUILD_BASE, &config.build_base.to_string_lossy());
}
value
}
/// Finds the next quoted string `"..."` in `line`, and extract the content from it. Move the `line`
/// variable after the end of the quoted string.
///
/// # Examples
///
/// ```
/// let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits)\".";
/// let first = parse_normalization_string(&mut s);
/// assert_eq!(first, Some("something (32 bits)".to_owned()));
/// assert_eq!(s, " -> \"something ($WORD bits)\".");
/// ```
fn parse_normalization_string(line: &mut &str) -> Option<String> {
// FIXME support escapes in strings.
let begin = line.find('"')? + 1;
let end = line[begin..].find('"')? + begin;
let result = line[begin..end].to_owned();
*line = &line[end + 1..];
Some(result)
}
#[test]
fn test_parse_normalization_string() {
let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits)\".";
let first = parse_normalization_string(&mut s);
assert_eq!(first, Some("something (32 bits)".to_owned()));
assert_eq!(s, " -> \"something ($WORD bits)\".");
// Nothing to normalize (No quotes)
let mut s = "normalize-stderr-32bit: something (32 bits) -> something ($WORD bits).";
let first = parse_normalization_string(&mut s);
assert_eq!(first, None);
assert_eq!(s, r#"normalize-stderr-32bit: something (32 bits) -> something ($WORD bits)."#);
// Nothing to normalize (Only a single quote)
let mut s = "normalize-stderr-32bit: \"something (32 bits) -> something ($WORD bits).";
let first = parse_normalization_string(&mut s);
assert_eq!(first, None);
assert_eq!(s, "normalize-stderr-32bit: \"something (32 bits) -> something ($WORD bits).");
// Nothing to normalize (Three quotes)
let mut s = "normalize-stderr-32bit: \"something (32 bits)\" -> \"something ($WORD bits).";
let first = parse_normalization_string(&mut s);
assert_eq!(first, Some("something (32 bits)".to_owned()));
assert_eq!(s, " -> \"something ($WORD bits).");
}
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