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io read/write int be/le optimizations

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This commit is contained in:
Josh Wolfe 2018-09-16 23:57:23 -04:00
parent 772876b2f0
commit 8008ae470e
1 changed files with 12 additions and 4 deletions
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16
std/io.zig
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@ -155,11 +155,15 @@ pub fn InStream(comptime ReadError: type) type {
} }
pub fn readIntLe(self: *Self, comptime T: type) !T { pub fn readIntLe(self: *Self, comptime T: type) !T {
return self.readInt(builtin.Endian.Little, T); var bytes: [@sizeOf(T)]u8 = undefined;
try self.readNoEof(bytes[0..]);
return mem.readIntLE(T, bytes);
} }
pub fn readIntBe(self: *Self, comptime T: type) !T { pub fn readIntBe(self: *Self, comptime T: type) !T {
return self.readInt(builtin.Endian.Big, T); var bytes: [@sizeOf(T)]u8 = undefined;
try self.readNoEof(bytes[0..]);
return mem.readIntBE(T, bytes);
} }
pub fn readInt(self: *Self, endian: builtin.Endian, comptime T: type) !T { pub fn readInt(self: *Self, endian: builtin.Endian, comptime T: type) !T {
@ -226,11 +230,15 @@ pub fn OutStream(comptime WriteError: type) type {
} }
pub fn writeIntLe(self: *Self, comptime T: type, value: T) !void { pub fn writeIntLe(self: *Self, comptime T: type, value: T) !void {
return self.writeInt(builtin.Endian.Little, T, value); var bytes: [@sizeOf(T)]u8 = undefined;
mem.writeIntLE(T, &bytes, value);
return self.writeFn(self, bytes);
} }
pub fn writeIntBe(self: *Self, comptime T: type, value: T) !void { pub fn writeIntBe(self: *Self, comptime T: type, value: T) !void {
return self.writeInt(builtin.Endian.Big, T, value); var bytes: [@sizeOf(T)]u8 = undefined;
mem.writeIntBE(T, &bytes, value);
return self.writeFn(self, bytes);
} }
pub fn writeInt(self: *Self, endian: builtin.Endian, comptime T: type, value: T) !void { pub fn writeInt(self: *Self, endian: builtin.Endian, comptime T: type, value: T) !void {