Commit 2ef0795bfb
Changed files (1)
doc/langref.html.in
@@ -1885,7 +1885,7 @@ test "null terminated array" {
<li>Supports slice syntax: {#syntax#}ptr[start..end]{#endsyntax#}</li>
<li>Supports pointer arithmetic: {#syntax#}ptr + x{#endsyntax#}, {#syntax#}ptr - x{#endsyntax#}</li>
<li>{#syntax#}T{#endsyntax#} must have a known size, which means that it cannot be
- {#syntax#}c_void{#endsyntax#} or any other {#link|@OpaqueType#}.</li>
+ {#syntax#}c_void{#endsyntax#} or any other {#link|opaque type|Opaque Types#}.</li>
</ul>
</li>
</ul>
@@ -5392,7 +5392,7 @@ fn eql_i32(a: i32, b: i32) bool {
</p>
<p>
{#syntax#}void{#endsyntax#} is distinct from {#syntax#}c_void{#endsyntax#}, which is defined like this:
- {#syntax#}pub const c_void = @OpaqueType();{#endsyntax#}.
+ {#syntax#}pub const c_void = @Type(.Opaque);{#endsyntax#}.
{#syntax#}void{#endsyntax#} has a known size of 0 bytes, and {#syntax#}c_void{#endsyntax#} has an unknown, but non-zero, size.
</p>
<p>
@@ -7666,30 +7666,6 @@ mem.set(u8, dest, c);{#endsyntax#}</pre>
</p>
{#header_close#}
- {#header_open|@OpaqueType#}
- <pre>{#syntax#}@OpaqueType() type{#endsyntax#}</pre>
- <p>
- Creates a new type with an unknown (but non-zero) size and alignment.
- </p>
- <p>
- This is typically used for type safety when interacting with C code that does not expose struct details.
- Example:
- </p>
- {#code_begin|test_err|expected type '*Derp', found '*Wat'#}
-const Derp = @OpaqueType();
-const Wat = @OpaqueType();
-
-extern fn bar(d: *Derp) void;
-fn foo(w: *Wat) callconv(.C) void {
- bar(w);
-}
-
-test "call foo" {
- foo(undefined);
-}
- {#code_end#}
- {#header_close#}
-
{#header_open|@panic#}
<pre>{#syntax#}@panic(message: []const u8) noreturn{#endsyntax#}</pre>
<p>
@@ -8274,21 +8250,21 @@ test "integer truncation" {
<li>{#syntax#}comptime_float{#endsyntax#}</li>
<li>{#syntax#}@TypeOf(undefined){#endsyntax#}</li>
<li>{#syntax#}@TypeOf(null){#endsyntax#}</li>
+ <li>{#link|Arrays#}</li>
+ <li>{#link|Optionals#}</li>
+ <li>{#link|Error Union Type#}</li>
+ <li>{#link|Vectors#}</li>
+ <li>{#link|Opaque Types#}</li>
+ <li>AnyFrame</li>
</ul>
<p>
For these types it is a
<a href="https://github.com/ziglang/zig/issues/2907">TODO in the compiler to implement</a>:
</p>
<ul>
- <li>Array</li>
- <li>Optional</li>
- <li>ErrorUnion</li>
<li>ErrorSet</li>
<li>Enum</li>
- <li>Opaque</li>
<li>FnFrame</li>
- <li>AnyFrame</li>
- <li>Vector</li>
<li>EnumLiteral</li>
</ul>
<p>
@@ -8373,6 +8349,28 @@ fn foo(comptime T: type, ptr: *T) T {
{#header_close#}
{#header_close#}
+ {#header_open|Opaque Types#}
+ {#syntax#}@Type(.Opaque){#endsyntax#} creates a new type with an unknown (but non-zero) size and alignment.
+ </p>
+ <p>
+ This is typically used for type safety when interacting with C code that does not expose struct details.
+ Example:
+ </p>
+ {#code_begin|test_err|expected type '*Derp', found '*Wat'#}
+const Derp = @Type(.Opaque);
+const Wat = @Type(.Opaque);
+
+extern fn bar(d: *Derp) void;
+fn foo(w: *Wat) callconv(.C) void {
+ bar(w);
+}
+
+test "call foo" {
+ foo(undefined);
+}
+ {#code_end#}
+ {#header_close#}
+
{#header_open|Build Mode#}
<p>
Zig has four build modes: