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This commit is contained in:
Manish Goregaokar 2014-11-19 14:32:47 +05:30
parent 92f13d8231
commit 9341427b0a
1 changed files with 5 additions and 4 deletions
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9
src/types.rs
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@ -6,13 +6,13 @@ use syntax::ast::*;
use rustc::lint::{Context, LintPass, LintArray, Lint, Level};
use syntax::codemap::Span;
/// Handles all the linting of funky types
pub struct TypePass;
declare_lint!(CLIPPY_BOX_VEC, Warn,
"Warn on usage of Box<Vec<T>>")
/// Matches a type with a provided string, and returns its type parameters if successful
pub fn match_ty_unwrap<'a>(ty: &'a Ty, segments: &[&str]) -> Option<&'a [P<Ty>]> {
match ty.node {
TyPath(Path {segments: ref seg, ..}, _, _) => {
@ -35,13 +35,14 @@ pub fn match_ty_unwrap<'a>(ty: &'a Ty, segments: &[&str]) -> Option<&'a [P<Ty>]>
}
}
fn span_note_and_lint(cx: &Context, lint: &'static Lint, span: Span, msg: &str, note: &str) {
/// Lets me span a note only if the lint is shown
pub fn span_note_and_lint(cx: &Context, lint: &'static Lint, span: Span, msg: &str, note: &str) {
cx.span_lint(lint, span, msg);
if cx.current_level(lint) != Level::Allow {
cx.sess().span_note(span, note);
}
}
impl LintPass for TypePass {
fn get_lints(&self) -> LintArray {
lint_array!(CLIPPY_BOX_VEC)