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translate-c: Add @truncate where needed

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Make getLimitedValue API much easier to use with zig.
Fixes the compilation on 32bit hosts.
This commit is contained in:
LemonBoy 2021-05-17 17:41:42 +02:00 committed by Andrew Kelley
parent 5414bd48ed
commit fe1a166589
2 changed files with 6 additions and 3 deletions
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5
src/clang.zig
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@ -1,3 +1,4 @@
const std = @import("std");
pub const builtin = @import("builtin");
pub const SourceLocation = extern struct {
@ -115,7 +116,9 @@ pub const APFloatBaseSemantics = extern enum {
};
pub const APInt = opaque {
pub const getLimitedValue = ZigClangAPInt_getLimitedValue;
pub fn getLimitedValue(self: *const APInt, comptime T: type) T {
return @truncate(T, ZigClangAPInt_getLimitedValue(self, std.math.maxInt(T)));
}
extern fn ZigClangAPInt_getLimitedValue(*const APInt, limit: u64) u64;
};

4
src/translate_c.zig
View File

@ -2341,7 +2341,7 @@ fn transInitListExprArray(
assert(@ptrCast(*const clang.Type, arr_type).isConstantArrayType());
const const_arr_ty = @ptrCast(*const clang.ConstantArrayType, arr_type);
const size_ap_int = const_arr_ty.getSize();
const all_count = size_ap_int.getLimitedValue(math.maxInt(usize));
const all_count = size_ap_int.getLimitedValue(usize);
const leftover_count = all_count - init_count;
if (all_count == 0) {
@ -4266,7 +4266,7 @@ fn transType(c: *Context, scope: *Scope, ty: *const clang.Type, source_loc: clan
const const_arr_ty = @ptrCast(*const clang.ConstantArrayType, ty);
const size_ap_int = const_arr_ty.getSize();
const size = size_ap_int.getLimitedValue(math.maxInt(usize));
const size = size_ap_int.getLimitedValue(usize);
const elem_type = try transType(c, scope, const_arr_ty.getElementType().getTypePtr(), source_loc);
return Tag.array_type.create(c.arena, .{ .len = size, .elem_type = elem_type });