Add STD_FS_CREATE_DIR into paths

Author: hkmatsumoto

clippy_lints/src/create_dir.rs

@@ -1,4 +1,4 @@
-use crate::utils::{match_qpath, snippet, span_lint_and_sugg};
+use crate::utils::{match_qpath, paths, snippet, span_lint_and_sugg};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::*;
@@ -33,7 +33,7 @@ impl LateLintPass<'_> for CreateDir {
         if_chain! {
             if let ExprKind::Call(ref func, ref args) = expr.kind;
             if let ExprKind::Path(ref path) = func.kind;
-            if match_qpath(path, &["std", "fs", "create_dir"]);
+            if match_qpath(path, &paths::STD_FS_CREATE_DIR);
             then {
                 span_lint_and_sugg(
                     cx,

clippy_lints/src/utils/paths.rs

@@ -110,6 +110,7 @@ pub const SLICE_ITER: [&str; 3] = ["core", "slice", "Iter"];
 pub const STDERR: [&str; 4] = ["std", "io", "stdio", "stderr"];
 pub const STDOUT: [&str; 4] = ["std", "io", "stdio", "stdout"];
 pub const STD_CONVERT_IDENTITY: [&str; 3] = ["std", "convert", "identity"];
+pub const STD_FS_CREATE_DIR: [&str; 3] = ["std", "fs", "create_dir"];
 pub const STD_MEM_TRANSMUTE: [&str; 3] = ["std", "mem", "transmute"];
 pub const STD_PTR_NULL: [&str; 3] = ["std", "ptr", "null"];
 pub const STRING_AS_MUT_STR: [&str; 4] = ["alloc", "string", "String", "as_mut_str"];