forked from mirror/vulkan-zig
36 lines
1.3 KiB
Zig
36 lines
1.3 KiB
Zig
const std = @import("std");
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const reg = @import("registry.zig");
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const Allocator = std.mem.Allocator;
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pub fn generate(allocator: *Allocator, spec_jsons: []const []const u8, writer: anytype) !void {
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var arena = std.heap.ArenaAllocator.init(allocator);
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defer arena.deinit();
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// Only one of the passed specs may be core (and one of them _must_ be core) -
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// the others must be exensions.
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var core_registry: reg.CoreRegistry = undefined;
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const num_ext_registries = spec_jsons.len - 1;
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const ext_registries = try arena.allocator.alloc(reg.ExtensionRegistry, num_ext_registries);
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var ext_registry_i: usize = 0;
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for (spec_jsons) |spec_json| {
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var tokens = std.json.TokenStream.init(spec_json);
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const registry = try std.json.parse(reg.Registry, &tokens, .{.allocator = &arena.allocator});
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switch (registry) {
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.core => |parsed_core_registry| core_registry = parsed_core_registry,
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.extension => |parsed_ext_registry| {
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if (ext_registry_i == num_ext_registries) {
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return error.NoCoreRegistry;
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}
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ext_registries[ext_registry_i] = parsed_ext_registry;
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ext_registry_i += 1;
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},
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}
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}
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if (ext_registry_i != num_ext_registries) {
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return error.MultipleCoreRegistries;
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}
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}
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