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translate_c: fix ternary operator output in C macros

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Jacob 2025-08-02 16:39:07 +08:00 • committed by Alex Rønne Petersen
parent 0795e2b2ef
commit ab6dbfe1a3
3 changed files with 27 additions and 5 deletions
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7
src/translate_c.zig
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@ -7,10 +7,10 @@ const meta = std.meta;
const clang = @import("clang.zig");
const aro = @import("aro");
const CToken = aro.Tokenizer.Token;
const Node = ast.Node;
const Tag = Node.Tag;
const common = @import("aro_translate_c");
const ast = common.ast;
const Node = ast.Node;
const Tag = Node.Tag;
const Error = common.Error;
const MacroProcessingError = common.MacroProcessingError;
const TypeError = common.TypeError;
@ -5985,10 +5985,11 @@ fn parseCCondExpr(c: *Context, m: *MacroCtx, scope: *Scope) ParseError!Node {
}
_ = m.next();
const cond_body = try macroIntToBool(c, node);
const then_body = try parseCOrExpr(c, m, scope);
try m.skip(c, .colon);
const else_body = try parseCCondExpr(c, m, scope);
return Tag.@"if".create(c.arena, .{ .cond = node, .then = then_body, .@"else" = else_body });
return Tag.@"if".create(c.arena, .{ .cond = cond_body, .then = then_body, .@"else" = else_body });
}
fn parseCOrExpr(c: *Context, m: *MacroCtx, scope: *Scope) ParseError!Node {

21
test/cases/translate_c/tenary_in_macro.c Normal file
View file

@ -0,0 +1,21 @@
#define TERNARY_CHECK(i) check(i)
#define TERNARY_CALL(i) (TERNARY_CHECK(i) ? (i+1) : (i-1))
static inline int check(int obj) {
return obj % 2;
}
int target_func(int a) {
return TERNARY_CALL(a);
}
// translate-c
// c_frontend=clang
//
// pub inline fn TERNARY_CHECK(i: anytype) @TypeOf(check(i)) {
// _ = &i;
// return check(i);
// }
// pub inline fn TERNARY_CALL(i: anytype) @TypeOf(if (TERNARY_CHECK(i) != 0) i + @as(c_int, 1) else i - @as(c_int, 1)) {
// _ = &i;
// return if (TERNARY_CHECK(i) != 0) i + @as(c_int, 1) else i - @as(c_int, 1);
// }

4
test/translate_c.zig
View file

@ -3101,8 +3101,8 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ int a, b, c;
\\#define FOO a ? b : c
, &[_][]const u8{
\\pub inline fn FOO() @TypeOf(if (a) b else c) {
\\ return if (a) b else c;
\\pub inline fn FOO() @TypeOf(if (a != 0) b else c) {
\\ return if (a != 0) b else c;
\\}
});