Make clippy_lints::{utils,consts} modules private, remove unused items.

ci/base-tests.sh

@@ -7,6 +7,7 @@ remark -f *.md > /dev/null
 # build clippy in debug mode and run tests
 cargo build --features debugging
 cargo test --features debugging
+cd clippy_lints && cargo test && cd ..
 mkdir -p ~/rust/cargo/bin
 cp target/debug/cargo-clippy ~/rust/cargo/bin/cargo-clippy
 cp target/debug/clippy-driver ~/rust/cargo/bin/clippy-driver

clippy_lints/src/consts.rs

@@ -16,22 +16,6 @@ use syntax::ast::{FloatTy, LitKind};
 use syntax::ptr::P;
 use crate::utils::{sext, unsext, clip};
 
-#[derive(Debug, Copy, Clone)]
-pub enum FloatWidth {
-    F32,
-    F64,
-    Any,
-}
-
-impl From<FloatTy> for FloatWidth {
-    fn from(ty: FloatTy) -> Self {
-        match ty {
-            FloatTy::F32 => FloatWidth::F32,
-            FloatTy::F64 => FloatWidth::F64,
-        }
-    }
-}
-
 /// A `LitKind`-like enum to fold constant `Expr`s into.
 #[derive(Debug, Clone)]
 pub enum Constant {

clippy_lints/src/lib.rs

@@ -48,9 +48,9 @@ macro_rules! declare_clippy_lint {
     };
 }
 
-pub mod consts;
+mod consts;
 #[macro_use]
-pub mod utils;
+mod utils;
 
 // begin lints modules, do not remove this comment, it’s used in `update_lints`
 pub mod approx_const;

clippy_lints/src/utils/camel_case.rs

@@ -0,0 +1,114 @@
+/// Return the index of the character after the first camel-case component of
+/// `s`.
+pub fn camel_case_until(s: &str) -> usize {
+    let mut iter = s.char_indices();
+    if let Some((_, first)) = iter.next() {
+        if !first.is_uppercase() {
+            return 0;
+        }
+    } else {
+        return 0;
+    }
+    let mut up = true;
+    let mut last_i = 0;
+    for (i, c) in iter {
+        if up {
+            if c.is_lowercase() {
+                up = false;
+            } else {
+                return last_i;
+            }
+        } else if c.is_uppercase() {
+            up = true;
+            last_i = i;
+        } else if !c.is_lowercase() {
+            return i;
+        }
+    }
+    if up {
+        last_i
+    } else {
+        s.len()
+    }
+}
+
+/// Return index of the last camel-case component of `s`.
+pub fn camel_case_from(s: &str) -> usize {
+    let mut iter = s.char_indices().rev();
+    if let Some((_, first)) = iter.next() {
+        if !first.is_lowercase() {
+            return s.len();
+        }
+    } else {
+        return s.len();
+    }
+    let mut down = true;
+    let mut last_i = s.len();
+    for (i, c) in iter {
+        if down {
+            if c.is_uppercase() {
+                down = false;
+                last_i = i;
+            } else if !c.is_lowercase() {
+                return last_i;
+            }
+        } else if c.is_lowercase() {
+            down = true;
+        } else {
+            return last_i;
+        }
+    }
+    last_i
+}
+
+#[cfg(test)]
+mod test {
+    use super::{camel_case_from, camel_case_until};
+
+    #[test]
+    fn from_full() {
+        assert_eq!(camel_case_from("AbcDef"), 0);
+        assert_eq!(camel_case_from("Abc"), 0);
+    }
+
+    #[test]
+    fn from_partial() {
+        assert_eq!(camel_case_from("abcDef"), 3);
+        assert_eq!(camel_case_from("aDbc"), 1);
+    }
+
+    #[test]
+    fn from_not() {
+        assert_eq!(camel_case_from("AbcDef_"), 7);
+        assert_eq!(camel_case_from("AbcDD"), 5);
+    }
+
+    #[test]
+    fn from_caps() {
+        assert_eq!(camel_case_from("ABCD"), 4);
+    }
+
+    #[test]
+    fn until_full() {
+        assert_eq!(camel_case_until("AbcDef"), 6);
+        assert_eq!(camel_case_until("Abc"), 3);
+    }
+
+    #[test]
+    fn until_not() {
+        assert_eq!(camel_case_until("abcDef"), 0);
+        assert_eq!(camel_case_until("aDbc"), 0);
+    }
+
+    #[test]
+    fn until_partial() {
+        assert_eq!(camel_case_until("AbcDef_"), 6);
+        assert_eq!(camel_case_until("CallTypeC"), 8);
+        assert_eq!(camel_case_until("AbcDD"), 3);
+    }
+
+    #[test]
+    fn until_caps() {
+        assert_eq!(camel_case_until("ABCD"), 0);
+    }
+}

clippy_lints/src/utils/conf.rs

@@ -38,28 +38,13 @@ pub enum Error {
     Io(io::Error),
     /// Not valid toml or doesn't fit the expected conf format
     Toml(String),
-    /// Type error.
-    Type(
-        /// The name of the key.
-        &'static str,
-        /// The expected type.
-        &'static str,
-        /// The type we got instead.
-        &'static str,
-    ),
-    /// There is an unknown key is the file.
-    UnknownKey(String),
 }
 
 impl fmt::Display for Error {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
         match *self {
             Error::Io(ref err) => err.fmt(f),
             Error::Toml(ref err) => err.fmt(f),
-            Error::Type(key, expected, got) => {
-                write!(f, "`{}` is expected to be a `{}` but is a `{}`", key, expected, got)
-            },
-            Error::UnknownKey(ref key) => write!(f, "unknown key `{}`", key),
         }
     }
 }

clippy_lints/src/utils/mod.rs

@@ -21,9 +21,11 @@ use syntax::ast::{self, LitKind};
 use syntax::attr;
 use syntax::source_map::{Span, DUMMY_SP};
 use syntax::errors::DiagnosticBuilder;
-use syntax::ptr::P;
 use syntax::symbol::keywords;
 
+mod camel_case;
+pub use self::camel_case::{camel_case_from, camel_case_until};
+
 pub mod comparisons;
 pub mod conf;
 pub mod constants;
@@ -37,8 +39,6 @@ pub mod ptr;
 pub mod usage;
 pub use self::hir_utils::{SpanlessEq, SpanlessHash};
 
-pub type MethodArgs = HirVec<P<Expr>>;
-
 pub mod higher;
 
 /// Returns true if the two spans come from differing expansions (i.e. one is
@@ -106,17 +106,6 @@ pub fn match_type(cx: &LateContext<'_, '_>, ty: Ty<'_>, path: &[&str]) -> bool {
     }
 }
 
-/// Check if the method call given in `expr` belongs to given type.
-pub fn match_impl_method(cx: &LateContext<'_, '_>, expr: &Expr, path: &[&str]) -> bool {
-    let method_call = cx.tables.type_dependent_defs()[expr.hir_id];
-    let trt_id = cx.tcx.impl_of_method(method_call.def_id());
-    if let Some(trt_id) = trt_id {
-        match_def_path(cx.tcx, trt_id, path)
-    } else {
-        false
-    }
-}
-
 /// Check if the method call given in `expr` belongs to given trait.
 pub fn match_trait_method(cx: &LateContext<'_, '_>, expr: &Expr, path: &[&str]) -> bool {
     let method_call = cx.tables.type_dependent_defs()[expr.hir_id];
@@ -755,69 +744,6 @@ pub fn is_direct_expn_of(span: Span, name: &str) -> Option<Span> {
     }
 }
 
-/// Return the index of the character after the first camel-case component of
-/// `s`.
-pub fn camel_case_until(s: &str) -> usize {
-    let mut iter = s.char_indices();
-    if let Some((_, first)) = iter.next() {
-        if !first.is_uppercase() {
-            return 0;
-        }
-    } else {
-        return 0;
-    }
-    let mut up = true;
-    let mut last_i = 0;
-    for (i, c) in iter {
-        if up {
-            if c.is_lowercase() {
-                up = false;
-            } else {
-                return last_i;
-            }
-        } else if c.is_uppercase() {
-            up = true;
-            last_i = i;
-        } else if !c.is_lowercase() {
-            return i;
-        }
-    }
-    if up {
-        last_i
-    } else {
-        s.len()
-    }
-}
-
-/// Return index of the last camel-case component of `s`.
-pub fn camel_case_from(s: &str) -> usize {
-    let mut iter = s.char_indices().rev();
-    if let Some((_, first)) = iter.next() {
-        if !first.is_lowercase() {
-            return s.len();
-        }
-    } else {
-        return s.len();
-    }
-    let mut down = true;
-    let mut last_i = s.len();
-    for (i, c) in iter {
-        if down {
-            if c.is_uppercase() {
-                down = false;
-                last_i = i;
-            } else if !c.is_lowercase() {
-                return last_i;
-            }
-        } else if c.is_lowercase() {
-            down = true;
-        } else {
-            return last_i;
-        }
-    }
-    last_i
-}
-
 /// Convenience function to get the return type of a function
 pub fn return_ty<'a, 'tcx>(cx: &LateContext<'a, 'tcx>, fn_item: NodeId) -> Ty<'tcx> {
     let fn_def_id = cx.tcx.hir.local_def_id(fn_item);
@@ -1109,3 +1035,84 @@ pub fn any_parent_is_automatically_derived(tcx: TyCtxt<'_, '_, '_>, node: NodeId
     }
     false
 }
+
+#[cfg(test)]
+mod test {
+    use super::{trim_multiline, without_block_comments};
+
+    #[test]
+    fn test_trim_multiline_single_line() {
+        assert_eq!("", trim_multiline("".into(), false));
+        assert_eq!("...", trim_multiline("...".into(), false));
+        assert_eq!("...", trim_multiline("    ...".into(), false));
+        assert_eq!("...", trim_multiline("\t...".into(), false));
+        assert_eq!("...", trim_multiline("\t\t...".into(), false));
+    }
+
+    #[test]
+    #[rustfmt::skip]
+    fn test_trim_multiline_block() {
+        assert_eq!("\
+    if x {
+        y
+    } else {
+        z
+    }", trim_multiline("    if x {
+            y
+        } else {
+            z
+        }".into(), false));
+        assert_eq!("\
+    if x {
+    \ty
+    } else {
+    \tz
+    }", trim_multiline("    if x {
+        \ty
+        } else {
+        \tz
+        }".into(), false));
+    }
+
+    #[test]
+    #[rustfmt::skip]
+    fn test_trim_multiline_empty_line() {
+        assert_eq!("\
+    if x {
+        y
+
+    } else {
+        z
+    }", trim_multiline("    if x {
+            y
+
+        } else {
+            z
+        }".into(), false));
+    }
+
+    #[test]
+    fn test_without_block_comments_lines_without_block_comments() {
+        let result = without_block_comments(vec!["/*", "", "*/"]);
+        println!("result: {:?}", result);
+        assert!(result.is_empty());
+
+        let result = without_block_comments(vec!["", "/*", "", "*/", "#[crate_type = \"lib\"]", "/*", "", "*/", ""]);
+        assert_eq!(result, vec!["", "#[crate_type = \"lib\"]", ""]);
+
+        let result = without_block_comments(vec!["/* rust", "", "*/"]);
+        assert!(result.is_empty());
+
+        let result = without_block_comments(vec!["/* one-line comment */"]);
+        assert!(result.is_empty());
+
+        let result = without_block_comments(vec!["/* nested", "/* multi-line", "comment", "*/", "test", "*/"]);
+        assert!(result.is_empty());
+
+        let result = without_block_comments(vec!["/* nested /* inline /* comment */ test */ */"]);
+        assert!(result.is_empty());
+
+        let result = without_block_comments(vec!["foo", "bar", "baz"]);
+        assert_eq!(result, vec!["foo", "bar", "baz"]);
+    }
+}