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doc: clarifications to comptime section in langref after #14819

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mlugg 2023-04-15 01:19:37 +01:00 committed by Andrew Kelley
parent 0eebc25880
commit 07b7c3b31b
1 changed files with 8 additions and 14 deletions
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doc/langref.html.in
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@ -7048,8 +7048,10 @@ test "foo" {
<li>All variables are {#syntax#}comptime{#endsyntax#} variables.</li>
<li>All {#syntax#}if{#endsyntax#}, {#syntax#}while{#endsyntax#}, {#syntax#}for{#endsyntax#}, and {#syntax#}switch{#endsyntax#}
expressions are evaluated at compile-time, or emit a compile error if this is not possible.</li>
<li>All function calls cause the compiler to interpret the function at compile-time, emitting a
compile error if the function tries to do something that has global run-time side effects.</li>
<li>All {#syntax#}return{#endsyntax#} and {#syntax#}try{#endsyntax#} expressions are invalid (unless the function itself is called at compile-time).</li>
<li>All code with runtime side effects or depending on runtime values emits a compile error.</li>
<li>All function calls cause the compiler to interpret the function at compile-time, emitting a
compile error if the function tries to do something that has global runtime side effects.</li>
</ul>
<p>
This means that a programmer can create a function which is called both at compile-time and run-time, with
@ -7071,9 +7073,7 @@ test "fibonacci" {
try expect(fibonacci(7) == 13);
// test fibonacci at compile-time
comptime {
try expect(fibonacci(7) == 13);
}
try comptime expect(fibonacci(7) == 13);
}
{#code_end#}
<p>
@ -7088,9 +7088,7 @@ fn fibonacci(index: u32) u32 {
}
test "fibonacci" {
comptime {
try expect(fibonacci(7) == 13);
}
try comptime expect(fibonacci(7) == 13);
}
{#code_end#}
<p>
@ -7111,9 +7109,7 @@ fn fibonacci(index: i32) i32 {
}
test "fibonacci" {
comptime {
try assert(fibonacci(7) == 13);
}
try comptime assert(fibonacci(7) == 13);
}
{#code_end#}
<p>
@ -7143,9 +7139,7 @@ fn fibonacci(index: i32) i32 {
}
test "fibonacci" {
comptime {
try assert(fibonacci(7) == 99999);
}
try comptime assert(fibonacci(7) == 99999);
}
{#code_end#}