Normalize prefix for exported but not-really-public names

Author: SimonSapin

macros/lib.rs

@@ -11,7 +11,7 @@ use std::ascii::AsciiExt;
 
 /// Panic if any string contains ASCII uppercase letters.
 /// Emit a `MAX_LENGTH` constant with the length of the longest string.
-#[proc_macro_derive(cssparser__assert_ascii_lowercase__max_len)]
+#[proc_macro_derive(cssparser_internal__assert_ascii_lowercase__max_len)]
 pub fn assert_ascii_lowercase_max_len(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
     max_len_common(input, |token_trees| {
         let tokens = quote!( match x { #( #token_trees )* } );
@@ -47,7 +47,7 @@ pub fn assert_ascii_lowercase_max_len(input: proc_macro::TokenStream) -> proc_ma
 }
 
 /// Emit a `MAX_LENGTH` constant with the length of the longest string.
-#[proc_macro_derive(cssparser__max_len)]
+#[proc_macro_derive(cssparser_internal__max_len)]
 pub fn max_len(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
     max_len_common(input, |token_trees| {
         token_trees.iter().map(|tt| string_literal(tt).len()).max()
@@ -69,7 +69,7 @@ where F : FnOnce(&[syn::TokenTree]) -> Option<usize> {
 /// ```
 ///
 /// Map keys are ASCII-lowercased.
-#[proc_macro_derive(cssparser__phf_map)]
+#[proc_macro_derive(cssparser_internal__phf_map)]
 pub fn phf_map(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
     common(input, |token_trees| {
         let value_type = &token_trees[0];

src/macros.rs

@@ -37,13 +37,13 @@
 macro_rules! match_ignore_ascii_case {
     ( $input:expr, $( $match_body:tt )* ) => {
         {
-            _cssparser_internal__pretend_proc_macro! {
-                cssparser__assert_ascii_lowercase__max_len!( $( $match_body )* )
+            cssparser_internal__pretend_proc_macro! {
+                cssparser_internal__assert_ascii_lowercase__max_len!( $( $match_body )* )
             }
 
             {
-                // MAX_LENGTH is generated by cssparser__assert_ascii_lowercase__max_len
-                _cssparser_internal__to_lowercase!($input, MAX_LENGTH => lowercase);
+                // MAX_LENGTH is generated by cssparser_internal__assert_ascii_lowercase__max_len
+                cssparser_internal__to_lowercase!($input, MAX_LENGTH => lowercase);
                 // "A" is a short string that we know is different for every string pattern,
                 // since we’ve verified that none of them include ASCII upper case letters.
                 match lowercase.unwrap_or("A") {
@@ -86,16 +86,16 @@ macro_rules! match_ignore_ascii_case {
 macro_rules! ascii_case_insensitive_phf_map {
     ($name: ident -> $ValueType: ty = { $( $key: expr => $value: expr, )* }) => {
         fn $name(input: &str) -> Option<&'static $ValueType> {
-            _cssparser_internal__pretend_proc_macro! {
-                cssparser__phf_map!( ($ValueType) $( $key ($value) )+ )
+            cssparser_internal__pretend_proc_macro! {
+                cssparser_internal__phf_map!( ($ValueType) $( $key ($value) )+ )
             }
 
             {
-                _cssparser_internal__pretend_proc_macro! {
-                    cssparser__max_len!( $( $key )+ )
+                cssparser_internal__pretend_proc_macro! {
+                    cssparser_internal__max_len!( $( $key )+ )
                 }
-                // MAX_LENGTH is generated by cssparser__max_len
-                _cssparser_internal__to_lowercase!(input, MAX_LENGTH => lowercase);
+                // MAX_LENGTH is generated by cssparser_internal__max_len
+                cssparser_internal__to_lowercase!(input, MAX_LENGTH => lowercase);
                 lowercase.and_then(|s| MAP.get(s))
             }
         }
@@ -111,7 +111,7 @@ macro_rules! ascii_case_insensitive_phf_map {
 ///   with a stack-allocated buffer as long as the longest `$string`.
 #[macro_export]
 #[doc(hidden)]
-macro_rules! _cssparser_internal__to_lowercase {
+macro_rules! cssparser_internal__to_lowercase {
     ($input: expr, $MAX_LENGTH: expr => $output: ident) => {
         // mem::uninitialized() is ok because `buffer` is only used in `_internal__to_lowercase`,
         // which initializes with `copy_from_slice` the part of the buffer it uses,
@@ -130,7 +130,7 @@ macro_rules! _cssparser_internal__to_lowercase {
 /// **This macro is not part of the public API. It can change or be removed between any versions.**
 #[macro_export]
 #[doc(hidden)]
-macro_rules! _cssparser_internal__pretend_proc_macro {
+macro_rules! cssparser_internal__pretend_proc_macro {
     ($macro_name: ident ! ( $($tt: tt)* )) => {
         #[derive($macro_name)]
         #[allow(unused)]