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remove error to/from int casting syntax; add @errorToInt/@intToError

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See #1061
This commit is contained in:
Andrew Kelley
2018-06-18 18:48:29 -04:00
parent a430853a48
commit 626b73e8be
10 changed files with 138 additions and 60 deletions
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38
test/compile_errors.zig
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@@ -467,25 +467,34 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
cases.add(
"int to err global invalid number",
\\const Set1 = error{A, B};
\\const Set1 = error{
\\ A,
\\ B,
\\};
\\comptime {
\\ var x: usize = 3;
\\ var y = error(x);
\\ var x: u16 = 3;
\\ var y = @intToError(x);
\\}
,
".tmp_source.zig:4:18: error: integer value 3 represents no error",
".tmp_source.zig:7:13: error: integer value 3 represents no error",
);
cases.add(
"int to err non global invalid number",
\\const Set1 = error{A, B};
\\const Set2 = error{A, C};
\\const Set1 = error{
\\ A,
\\ B,
\\};
\\const Set2 = error{
\\ A,
\\ C,
\\};
\\comptime {
\\ var x = usize(Set1.B);
\\ var y = Set2(x);
\\ var x = @errorToInt(Set1.B);
\\ var y = @errSetCast(Set2, @intToError(x));
\\}
,
".tmp_source.zig:5:17: error: integer value 2 represents no error in 'Set2'",
".tmp_source.zig:11:13: error: error.B not a member of error set 'Set2'",
);
cases.add(
@@ -2612,17 +2621,6 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
".tmp_source.zig:2:21: error: expected pointer, found 'usize'",
);
cases.add(
"too many error values to cast to small integer",
\\const Error = error { A, B, C, D, E, F, G, H };
\\fn foo(e: Error) u2 {
\\ return u2(e);
\\}
\\export fn entry() usize { return @sizeOf(@typeOf(foo)); }
,
".tmp_source.zig:3:14: error: too many error values to fit in 'u2'",
);
cases.add(
"asm at compile time",
\\comptime {