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refactor: make unsupported config type errors more descriptive

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CJ van den Berg 2025-11-18 15:35:06 +01:00
parent 4cfe6adadd
commit e4d1b55c15
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 11 additions and 6 deletions
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17
src/main.zig
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@ -698,6 +698,7 @@ pub fn write_config_to_writer(comptime T: type, data: T, writer: *std.Io.Writer)
const default: T = .{}; const default: T = .{};
inline for (@typeInfo(T).@"struct".fields) |field_info| { inline for (@typeInfo(T).@"struct".fields) |field_info| {
if (config_eql( if (config_eql(
T,
field_info.type, field_info.type,
@field(data, field_info.name), @field(data, field_info.name),
@field(default, field_info.name), @field(default, field_info.name),
@ -721,6 +722,10 @@ pub fn write_config_to_writer(comptime T: type, data: T, writer: *std.Io.Writer)
} }
} }
fn unsupported_error(config_type: type, value_type: type) void {
@compileError("unsupported config type in " ++ @typeName(config_type) ++ ": " ++ @typeName(value_type));
}
fn write_color_value(value: u24, writer: *std.Io.Writer) std.Io.Writer.Error!void { fn write_color_value(value: u24, writer: *std.Io.Writer) std.Io.Writer.Error!void {
var hex: [7]u8 = undefined; var hex: [7]u8 = undefined;
try writer.writeByte('"'); try writer.writeByte('"');
@ -728,12 +733,12 @@ fn write_color_value(value: u24, writer: *std.Io.Writer) std.Io.Writer.Error!voi
try writer.writeByte('"'); try writer.writeByte('"');
} }
fn config_eql(comptime T: type, a: T, b: T) bool { fn config_eql(config_type: type, T: type, a: T, b: T) bool {
switch (T) { switch (T) {
[]const u8 => return std.mem.eql(u8, a, b), []const u8 => return std.mem.eql(u8, a, b),
[]const []const u8 => { []const []const u8 => {
if (a.len != b.len) return false; if (a.len != b.len) return false;
for (a, 0..) |x, i| if (!config_eql([]const u8, x, b[i])) return false; for (a, 0..) |x, i| if (!config_eql(config_type, []const u8, x, b[i])) return false;
return true; return true;
}, },
else => {}, else => {},
@ -745,19 +750,19 @@ fn config_eql(comptime T: type, a: T, b: T) bool {
return true; return true;
if (a == null or b == null) if (a == null or b == null)
return false; return false;
return config_eql(info.child, a.?, b.?); return config_eql(config_type, info.child, a.?, b.?);
}, },
.pointer => |info| switch (info.size) { .pointer => |info| switch (info.size) {
.slice => { .slice => {
if (a.len != b.len) return false; if (a.len != b.len) return false;
for (a, 0..) |x, i| if (!config_eql(info.child, x, b[i])) return false; for (a, 0..) |x, i| if (!config_eql(config_type, info.child, x, b[i])) return false;
return true; return true;
}, },
else => @compileError("unsupported config type " ++ @typeName(T)), else => unsupported_error(config_type, T),
}, },
else => {}, else => {},
} }
@compileError("unsupported config type " ++ @typeName(T)); unsupported_error(config_type, T);
} }
fn write_json_file(comptime T: type, data: T, allocator: std.mem.Allocator, file_name: []const u8) !void { fn write_json_file(comptime T: type, data: T, allocator: std.mem.Allocator, file_name: []const u8) !void {