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Add a match_ignore_ascii_case! macro that does not allocate.

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It should replace `match foo.to_ascii_lower().as_slice() { ...}`

@Manishearth I changed map.get to map.find in the lint to work around an ICE:

    task 'rustc' panicked at 'couldn't find node id 0 in the AST map'

Does this look OK?
This commit is contained in:
Simon Sapin 2014-12-21 11:17:53 +00:00
parent 540d218885
commit 2e35d4e987
6 changed files with 34 additions and 12 deletions
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6
components/plugins/lints.rs
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@ -104,8 +104,8 @@ fn lint_unrooted_ty(cx: &Context, ty: &ast::Ty, warning: &str) {
// Determines if a block is in an unsafe context so that an unhelpful
// lint can be aborted.
fn unsafe_context(map: &ast_map::Map, id: ast::NodeId) -> bool {
match map.get(map.get_parent(id)) {
ast_map::NodeImplItem(itm) => {
match map.find(map.get_parent(id)) {
Some(ast_map::NodeImplItem(itm)) => {
match *itm {
ast::MethodImplItem(ref meth) => match meth.node {
ast::MethDecl(_, _, _, _, style, _, _, _) => match style {
@ -117,7 +117,7 @@ fn unsafe_context(map: &ast_map::Map, id: ast::NodeId) -> bool {
_ => false,
}
},
ast_map::NodeItem(itm) => {
Some(ast_map::NodeItem(itm)) => {
match itm.node {
ast::ItemFn(_, style, _, _, _) => match style {
ast::UnsafeFn => true,