288 lines
8.7 KiB
Rust
288 lines
8.7 KiB
Rust
// Copyright 2015 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.
|
|
|
|
// Objects for seeking through a char stream for occurences of TODO and FIXME.
|
|
// Depending on the loaded configuration, may also check that these have an
|
|
// associated issue number.
|
|
|
|
use std::fmt;
|
|
|
|
static TO_DO_CHARS: &'static [char] = &['T', 'O', 'D', 'O'];
|
|
static FIX_ME_CHARS: &'static [char] = &['F', 'I', 'X', 'M', 'E'];
|
|
|
|
#[derive(Clone, Copy)]
|
|
pub enum ReportTactic {
|
|
Always,
|
|
Unnumbered,
|
|
Never,
|
|
}
|
|
|
|
impl ReportTactic {
|
|
fn is_enabled(&self) -> bool {
|
|
match *self {
|
|
ReportTactic::Always => true,
|
|
ReportTactic::Unnumbered => true,
|
|
ReportTactic::Never => false,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl_enum_decodable!(ReportTactic, Always, Unnumbered, Never);
|
|
|
|
#[derive(Clone, Copy)]
|
|
enum Seeking {
|
|
Issue {
|
|
todo_idx: usize,
|
|
fixme_idx: usize,
|
|
},
|
|
Number {
|
|
issue: Issue,
|
|
part: NumberPart,
|
|
},
|
|
}
|
|
|
|
#[derive(Clone, Copy)]
|
|
enum NumberPart {
|
|
OpenParen,
|
|
Pound,
|
|
Number,
|
|
CloseParen,
|
|
}
|
|
|
|
#[derive(PartialEq, Eq, Debug, Clone, Copy)]
|
|
pub struct Issue {
|
|
issue_type: IssueType,
|
|
// Indicates whether we're looking for issues with missing numbers, or
|
|
// all issues of this type.
|
|
missing_number: bool,
|
|
}
|
|
|
|
impl fmt::Display for Issue {
|
|
fn fmt(&self, fmt: &mut fmt::Formatter) -> Result<(), fmt::Error> {
|
|
let msg = match self.issue_type {
|
|
IssueType::Todo => "TODO",
|
|
IssueType::Fixme => "FIXME",
|
|
};
|
|
let details = if self.missing_number {
|
|
" without issue number"
|
|
} else {
|
|
""
|
|
};
|
|
|
|
write!(fmt, "{}{}", msg, details)
|
|
}
|
|
}
|
|
|
|
#[derive(PartialEq, Eq, Debug, Clone, Copy)]
|
|
enum IssueType {
|
|
Todo,
|
|
Fixme,
|
|
}
|
|
|
|
enum IssueClassification {
|
|
Good,
|
|
Bad(Issue),
|
|
None,
|
|
}
|
|
|
|
pub struct BadIssueSeeker {
|
|
state: Seeking,
|
|
report_todo: ReportTactic,
|
|
report_fixme: ReportTactic,
|
|
}
|
|
|
|
impl BadIssueSeeker {
|
|
pub fn new(report_todo: ReportTactic, report_fixme: ReportTactic) -> BadIssueSeeker {
|
|
BadIssueSeeker {
|
|
state: Seeking::Issue { todo_idx: 0, fixme_idx: 0 },
|
|
report_todo: report_todo,
|
|
report_fixme: report_fixme,
|
|
}
|
|
}
|
|
|
|
// Check whether or not the current char is conclusive evidence for an
|
|
// unnumbered TO-DO or FIX-ME.
|
|
pub fn inspect(&mut self, c: char) -> Option<Issue> {
|
|
match self.state {
|
|
Seeking::Issue { todo_idx, fixme_idx } => {
|
|
self.state = self.inspect_issue(c, todo_idx, fixme_idx);
|
|
}
|
|
Seeking::Number { issue, part } => {
|
|
let result = self.inspect_number(c, issue, part);
|
|
|
|
if let IssueClassification::None = result {
|
|
return None;
|
|
}
|
|
|
|
self.state = Seeking::Issue { todo_idx: 0, fixme_idx: 0 };
|
|
|
|
if let IssueClassification::Bad(issue) = result {
|
|
return Some(issue);
|
|
}
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
fn inspect_issue(&mut self, c: char, mut todo_idx: usize, mut fixme_idx: usize) -> Seeking {
|
|
// FIXME: Should we also check for lower case characters?
|
|
if self.report_todo.is_enabled() && c == TO_DO_CHARS[todo_idx] {
|
|
todo_idx += 1;
|
|
if todo_idx == TO_DO_CHARS.len() {
|
|
return Seeking::Number {
|
|
issue: Issue {
|
|
issue_type: IssueType::Todo,
|
|
missing_number: if let ReportTactic::Unnumbered = self.report_todo {
|
|
true
|
|
} else {
|
|
false
|
|
},
|
|
},
|
|
part: NumberPart::OpenParen,
|
|
};
|
|
}
|
|
fixme_idx = 0;
|
|
} else if self.report_fixme.is_enabled() && c == FIX_ME_CHARS[fixme_idx] {
|
|
// Exploit the fact that the character sets of todo and fixme
|
|
// are disjoint by adding else.
|
|
fixme_idx += 1;
|
|
if fixme_idx == FIX_ME_CHARS.len() {
|
|
return Seeking::Number {
|
|
issue: Issue {
|
|
issue_type: IssueType::Fixme,
|
|
missing_number: if let ReportTactic::Unnumbered = self.report_fixme {
|
|
true
|
|
} else {
|
|
false
|
|
},
|
|
},
|
|
part: NumberPart::OpenParen,
|
|
};
|
|
}
|
|
todo_idx = 0;
|
|
} else {
|
|
todo_idx = 0;
|
|
fixme_idx = 0;
|
|
}
|
|
|
|
Seeking::Issue { todo_idx: todo_idx, fixme_idx: fixme_idx }
|
|
}
|
|
|
|
fn inspect_number(&mut self,
|
|
c: char,
|
|
issue: Issue,
|
|
mut part: NumberPart)
|
|
-> IssueClassification {
|
|
if !issue.missing_number || c == '\n' {
|
|
return IssueClassification::Bad(issue);
|
|
} else if c == ')' {
|
|
return if let NumberPart::CloseParen = part {
|
|
IssueClassification::Good
|
|
} else {
|
|
IssueClassification::Bad(issue)
|
|
};
|
|
}
|
|
|
|
match part {
|
|
NumberPart::OpenParen => {
|
|
if c != '(' {
|
|
return IssueClassification::Bad(issue);
|
|
} else {
|
|
part = NumberPart::Pound;
|
|
}
|
|
}
|
|
NumberPart::Pound => {
|
|
if c == '#' {
|
|
part = NumberPart::Number;
|
|
}
|
|
}
|
|
NumberPart::Number => {
|
|
if c >= '0' && c <= '9' {
|
|
part = NumberPart::CloseParen;
|
|
} else {
|
|
return IssueClassification::Bad(issue);
|
|
}
|
|
}
|
|
NumberPart::CloseParen => {}
|
|
}
|
|
|
|
self.state = Seeking::Number { part: part, issue: issue };
|
|
|
|
IssueClassification::None
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn find_unnumbered_issue() {
|
|
fn check_fail(text: &str, failing_pos: usize) {
|
|
let mut seeker = BadIssueSeeker::new(ReportTactic::Unnumbered, ReportTactic::Unnumbered);
|
|
assert_eq!(Some(failing_pos), text.chars().position(|c| seeker.inspect(c).is_some()));
|
|
}
|
|
|
|
fn check_pass(text: &str) {
|
|
let mut seeker = BadIssueSeeker::new(ReportTactic::Unnumbered, ReportTactic::Unnumbered);
|
|
assert_eq!(None, text.chars().position(|c| seeker.inspect(c).is_some()));
|
|
}
|
|
|
|
check_fail("TODO\n", 4);
|
|
check_pass(" TO FIX DOME\n");
|
|
check_fail(" \n FIXME\n", 8);
|
|
check_fail("FIXME(\n", 6);
|
|
check_fail("FIXME(#\n", 7);
|
|
check_fail("FIXME(#1\n", 8);
|
|
check_fail("FIXME(#)1\n", 7);
|
|
check_pass("FIXME(#1222)\n");
|
|
check_fail("FIXME(#12\n22)\n", 9);
|
|
check_pass("FIXME(@maintainer, #1222, hello)\n");
|
|
check_fail("TODO(#22) FIXME\n", 15);
|
|
}
|
|
|
|
#[test]
|
|
fn find_issue() {
|
|
fn is_bad_issue(text: &str, report_todo: ReportTactic, report_fixme: ReportTactic) -> bool {
|
|
let mut seeker = BadIssueSeeker::new(report_todo, report_fixme);
|
|
text.chars().any(|c| seeker.inspect(c).is_some())
|
|
}
|
|
|
|
assert!(is_bad_issue("TODO(@maintainer, #1222, hello)\n",
|
|
ReportTactic::Always,
|
|
ReportTactic::Never));
|
|
|
|
assert!(!is_bad_issue("TODO: no number\n", ReportTactic::Never, ReportTactic::Always));
|
|
|
|
assert!(is_bad_issue("This is a FIXME(#1)\n", ReportTactic::Never, ReportTactic::Always));
|
|
|
|
assert!(!is_bad_issue("bad FIXME\n", ReportTactic::Always, ReportTactic::Never));
|
|
}
|
|
|
|
#[test]
|
|
fn issue_type() {
|
|
let mut seeker = BadIssueSeeker::new(ReportTactic::Always, ReportTactic::Never);
|
|
let expected = Some(Issue { issue_type: IssueType::Todo, missing_number: false });
|
|
|
|
assert_eq!(expected,
|
|
"TODO(#100): more awesomeness"
|
|
.chars()
|
|
.map(|c| seeker.inspect(c))
|
|
.find(Option::is_some)
|
|
.unwrap());
|
|
|
|
let mut seeker = BadIssueSeeker::new(ReportTactic::Never, ReportTactic::Unnumbered);
|
|
let expected = Some(Issue { issue_type: IssueType::Fixme, missing_number: true });
|
|
|
|
assert_eq!(expected,
|
|
"Test. FIXME: bad, bad, not good"
|
|
.chars()
|
|
.map(|c| seeker.inspect(c))
|
|
.find(Option::is_some)
|
|
.unwrap());
|
|
}
|