Merge pull request #24329 from ziglang/writergate

Deprecates all existing std.io readers and writers in favor of the newly
provided std.io.Reader and std.io.Writer which are non-generic and have the
buffer above the vtable - in other words the buffer is in the interface, not
the implementation. This means that although Reader and Writer are no longer
generic, they are still transparent to optimization; all of the interface
functions have a concrete hot path operating on the buffer, and only make
vtable calls when the buffer is full.

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/std/io/buffered_reader.zig b/lib/std/io/buffered_reader.zig
index bcf54fb882..548dd92f73 100644
--- a/lib/std/io/buffered_reader.zig
+++ b/lib/std/io/buffered_reader.zig
@@ -12,7 +12,7 @@ pub fn BufferedReader(comptime buffer_size: usize, comptime ReaderType: type) ty
         end: usize = 0,
 
         pub const Error = ReaderType.Error;
-        pub const Reader = io.Reader(*Self, Error, read);
+        pub const Reader = io.GenericReader(*Self, Error, read);
 
         const Self = @This();
 
@@ -61,7 +61,7 @@ test "OneByte" {
 
         const Error = error{NoError};
         const Self = @This();
-        const Reader = io.Reader(*Self, Error, read);
+        const Reader = io.GenericReader(*Self, Error, read);
 
         fn init(str: []const u8) Self {
             return Self{
@@ -105,7 +105,7 @@ test "Block" {
 
         const Error = error{NoError};
         const Self = @This();
-        const Reader = io.Reader(*Self, Error, read);
+        const Reader = io.GenericReader(*Self, Error, read);
 
         fn init(block: []const u8, reads_allowed: usize) Self {
             return Self{