Unify non-snake-case lints and non-uppercase statics lints

This unifies the `non_snake_case_functions` and `uppercase_variables` lints
into one lint, `non_snake_case`. It also now checks for non-snake-case modules.
This also extends the non-camel-case types lint to check type parameters, and
merges the `non_uppercase_pattern_statics` lint into the
`non_uppercase_statics` lint.

Because the `uppercase_variables` lint is now part of the `non_snake_case`
lint, all non-snake-case variables that start with lowercase characters (such
as `fooBar`) will now trigger the `non_snake_case` lint.

New code should be updated to use the new `non_snake_case` lint instead of the
previous `non_snake_case_functions` and `uppercase_variables` lints. All use of
the `non_uppercase_pattern_statics` should be replaced with the
`non_uppercase_statics` lint. Any code that previously contained non-snake-case
module or variable names should be updated to use snake case names or disable
the `non_snake_case` lint. Any code with non-camel-case type parameters should
be changed to use camel case or disable the `non_camel_case_types` lint.

[breaking-change]

src/doc/guide-ffi.md

@@ -477,7 +477,7 @@ extern crate libc;
 
 #[cfg(target_os = "win32", target_arch = "x86")]
 #[link(name = "kernel32")]
-#[allow(non_snake_case_functions)]
+#[allow(non_snake_case)]
 extern "stdcall" {
     fn SetEnvironmentVariableA(n: *const u8, v: *const u8) -> libc::c_int;
 }

src/etc/unicode.py

@@ -34,7 +34,7 @@
 
 // NOTE: The following code was generated by "src/etc/unicode.py", do not edit directly
 
-#![allow(missing_doc, non_uppercase_statics, non_snake_case_functions)]
+#![allow(missing_doc, non_uppercase_statics, non_snake_case)]
 '''
 
 # Mapping taken from Table 12 from:

src/libcollections/hash/mod.rs

@@ -159,6 +159,7 @@ macro_rules! impl_hash_tuple(
         impl<S: Writer, $($name: Hash<S>),*> Hash<S> for ($($name,)*) {
             #[allow(uppercase_variables)]
             #[inline]
+            #[allow(non_snake_case)]
             fn hash(&self, state: &mut S) {
                 match *self {
                     ($(ref $name,)*) => {

src/libcore/char.rs

@@ -12,7 +12,7 @@
 //!
 //! For more details, see ::unicode::char (a.k.a. std::char)
 
-#![allow(non_snake_case_functions)]
+#![allow(non_snake_case)]
 #![doc(primitive = "char")]
 
 use mem::transmute;

src/libcore/fmt/mod.rs

@@ -668,7 +668,7 @@ macro_rules! tuple (
     () => ();
     ( $($name:ident,)+ ) => (
         impl<$($name:Show),*> Show for ($($name,)*) {
-            #[allow(uppercase_variables, dead_assignment)]
+            #[allow(non_snake_case, dead_assignment)]
             fn fmt(&self, f: &mut Formatter) -> Result {
                 try!(write!(f, "("));
                 let ($(ref $name,)*) = *self;

src/libcore/str.rs

@@ -394,9 +394,9 @@ impl NaiveSearcher {
     fn next(&mut self, haystack: &[u8], needle: &[u8]) -> Option<(uint, uint)> {
         while self.position + needle.len() <= haystack.len() {
             if haystack.slice(self.position, self.position + needle.len()) == needle {
-                let matchPos = self.position;
+                let match_pos = self.position;
                 self.position += needle.len(); // add 1 for all matches
-                return Some((matchPos, matchPos + needle.len()));
+                return Some((match_pos, match_pos + needle.len()));
             } else {
                 self.position += 1;
             }
@@ -410,7 +410,7 @@ impl NaiveSearcher {
 #[deriving(Clone)]
 struct TwoWaySearcher {
     // constants
-    critPos: uint,
+    crit_pos: uint,
     period: uint,
     byteset: u64,
 
@@ -423,32 +423,31 @@ struct TwoWaySearcher {
 // Crochemore, M., Perrin, D., 1991, Two-way string-matching, Journal of the ACM 38(3):651-675.
 impl TwoWaySearcher {
     fn new(needle: &[u8]) -> TwoWaySearcher {
-        let (critPos1, period1) = TwoWaySearcher::maximal_suffix(needle, false);
-        let (critPos2, period2) = TwoWaySearcher::maximal_suffix(needle, true);
+        let (crit_pos1, period1) = TwoWaySearcher::maximal_suffix(needle, false);
+        let (crit_pos2, period2) = TwoWaySearcher::maximal_suffix(needle, true);
 
-        let critPos;
+        let crit_pos;
         let period;
-        if critPos1 > critPos2 {
-            critPos = critPos1;
+        if crit_pos1 > crit_pos2 {
+            crit_pos = crit_pos1;
             period = period1;
         } else {
-            critPos = critPos2;
+            crit_pos = crit_pos2;
             period = period2;
         }
 
         let byteset = needle.iter()
                             .fold(0, |a, &b| (1 << ((b & 0x3f) as uint)) | a);
 
-
-        // The logic here (calculating critPos and period, the final if statement to see which
+        // The logic here (calculating crit_pos and period, the final if statement to see which
         // period to use for the TwoWaySearcher) is essentially an implementation of the
         // "small-period" function from the paper (p. 670)
         //
-        // In the paper they check whether `needle.slice_to(critPos)` is a suffix of
-        // `needle.slice(critPos, critPos + period)`, which is precisely what this does
-        if needle.slice_to(critPos) == needle.slice(period, period + critPos) {
+        // In the paper they check whether `needle.slice_to(crit_pos)` is a suffix of
+        // `needle.slice(crit_pos, crit_pos + period)`, which is precisely what this does
+        if needle.slice_to(crit_pos) == needle.slice(period, period + crit_pos) {
             TwoWaySearcher {
-                critPos: critPos,
+                crit_pos: crit_pos,
                 period: period,
                 byteset: byteset,
 
@@ -457,8 +456,8 @@ impl TwoWaySearcher {
             }
         } else {
             TwoWaySearcher {
-                critPos: critPos,
-                period: cmp::max(critPos, needle.len() - critPos) + 1,
+                crit_pos: crit_pos,
+                period: cmp::max(crit_pos, needle.len() - crit_pos) + 1,
                 byteset: byteset,
 
                 position: 0,
@@ -468,7 +467,7 @@ impl TwoWaySearcher {
     }
 
     #[inline]
-    fn next(&mut self, haystack: &[u8], needle: &[u8], longPeriod: bool) -> Option<(uint, uint)> {
+    fn next(&mut self, haystack: &[u8], needle: &[u8], long_period: bool) -> Option<(uint, uint)> {
         'search: loop {
             // Check that we have room to search in
             if self.position + needle.len() > haystack.len() {
@@ -484,36 +483,37 @@ impl TwoWaySearcher {
             }
 
             // See if the right part of the needle matches
-            let start = if longPeriod { self.critPos } else { cmp::max(self.critPos, self.memory) };
+            let start = if long_period { self.crit_pos }
+                        else { cmp::max(self.crit_pos, self.memory) };
             for i in range(start, needle.len()) {
                 if needle[i] != haystack[self.position + i] {
-                    self.position += i - self.critPos + 1;
-                    if !longPeriod {
+                    self.position += i - self.crit_pos + 1;
+                    if !long_period {
                         self.memory = 0;
                     }
                     continue 'search;
                 }
             }
 
             // See if the left part of the needle matches
-            let start = if longPeriod { 0 } else { self.memory };
-            for i in range(start, self.critPos).rev() {
+            let start = if long_period { 0 } else { self.memory };
+            for i in range(start, self.crit_pos).rev() {
                 if needle[i] != haystack[self.position + i] {
                     self.position += self.period;
-                    if !longPeriod {
+                    if !long_period {
                         self.memory = needle.len() - self.period;
                     }
                     continue 'search;
                 }
             }
 
             // We have found a match!
-            let matchPos = self.position;
+            let match_pos = self.position;
             self.position += needle.len(); // add self.period for all matches
-            if !longPeriod {
+            if !long_period {
                 self.memory = 0; // set to needle.len() - self.period for all matches
             }
-            return Some((matchPos, matchPos + needle.len()));
+            return Some((match_pos, match_pos + needle.len()));
         }
     }
 

src/liblibc/lib.rs

@@ -74,10 +74,10 @@
 */
 
 #![allow(non_camel_case_types)]
-#![allow(non_snake_case_functions)]
+#![allow(non_snake_case)]
 #![allow(non_uppercase_statics)]
 #![allow(missing_doc)]
-#![allow(uppercase_variables)]
+#![allow(non_snake_case)]
 
 #[cfg(test)] extern crate std;
 #[cfg(test)] extern crate test;

src/libnative/io/mod.rs

@@ -21,7 +21,7 @@
 //! play. The only dependencies of these modules are the normal system libraries
 //! that you would find on the respective platform.
 
-#![allow(non_snake_case_functions)]
+#![allow(non_snake_case)]
 
 use libc::c_int;
 use libc;

src/libnative/io/process.rs

@@ -838,7 +838,7 @@ fn free_handle(_handle: *mut ()) {
 
 #[cfg(unix)]
 fn translate_status(status: c_int) -> rtio::ProcessExit {
-    #![allow(non_snake_case_functions)]
+    #![allow(non_snake_case)]
     #[cfg(target_os = "linux")]
     #[cfg(target_os = "android")]
     mod imp {

src/libnum/bigint.rs

@@ -78,6 +78,7 @@ pub type DoubleBigDigit = u64;
 pub static ZERO_BIG_DIGIT: BigDigit = 0;
 static ZERO_VEC: [BigDigit, ..1] = [ZERO_BIG_DIGIT];
 
+#[allow(non_snake_case)]
 pub mod BigDigit {
     use super::BigDigit;
     use super::DoubleBigDigit;

src/librbml/lib.rs

@@ -1132,7 +1132,7 @@ mod tests {
 
 #[cfg(test)]
 mod bench {
-    #![allow(non_snake_case_functions)]
+    #![allow(non_snake_case)]
     use test::Bencher;
     use super::reader;
 

src/libregex/test/bench.rs

@@ -7,7 +7,7 @@
 // <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.
-#![allow(non_snake_case_functions)]
+#![allow(non_snake_case)]
 
 use std::rand::{Rng, task_rng};
 use stdtest::Bencher;

src/librustc/diagnostics.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![allow(non_snake_case)]
+
 register_diagnostic!(E0001, r##"
     This error suggests that the expression arm corresponding to the noted pattern
     will never be reached as for all possible values of the expression being matched,