begin work on new registry: api constants & tags

generator/registry-new.zig

@@ -0,0 +1,106 @@
+pub const Registry = struct {
+    decls: []Declaration,
+    api_constants: []ApiConstant,
+    tags: []Tag,
+};
+
+pub const Declaration = struct {
+    name: []const u8,
+    decl_type: TypeInfo,
+};
+
+pub const ApiConstant = struct {
+    pub const Value = union(enum) {
+        expr: []const u8,
+        alias: []const u8,
+    };
+
+    name: []const u8,
+    value: Value,
+};
+
+pub const Tag = struct {
+    name: []const u8,
+    author: []const u8,
+};
+
+pub const TypeInfo = union(enum) {
+    Struct: Container,
+    Union: Container,
+    Enum: Enum,
+    Bitmask: Bitmask,
+    Handle: Handle,
+    FnPtr: Command,
+    Command: Command,
+    Alias: []const u8,
+    Pointer: Pointer,
+    Array: Array,
+    Opaque: void,
+};
+
+pub const Container = struct {
+    pub const Field = struct {
+        name: []const u8,
+        field_type: TypeInfo,
+    };
+
+    fields: []Field,
+};
+
+pub const Enum = struct {
+    pub const Value = union(enum) {
+        bitpos: u5, // 1 << bitpos
+        bitvector: u32, // Combined flags
+        int: i32,
+        alias: []const u8,
+    };
+
+    pub const Field = struct {
+        name: []const u8,
+        value: Value,
+    };
+
+    fields: []Field,
+    is_bitmask_bits: bool,
+};
+
+pub const Bitmask = struct {
+    bits_enum: ?[]const u8,
+};
+
+pub const Handle = struct {
+    is_dispatchable: bool,
+};
+
+pub const Command = struct {
+    const Param = struct {
+        name: []const u8,
+        param_type: TypeInfo,
+    };
+
+    params: []Param,
+    return_type: *TypeInfo,
+    success_codes: []const []const u8,
+    error_codes: []const []const u8,
+};
+
+pub const Pointer = struct {
+    pub const PointerSize = enum {
+        one,
+        many, // The length is given by some expression
+        zero_terminated
+    };
+
+    is_const: bool,
+    child: *TypeInfo,
+};
+
+pub const Array = struct {
+    pub const ArraySize = union(enum) {
+        int: usize,
+        alias: []const u8, // Field size is given by an api constant
+    };
+
+    size: ArraySize,
+    child: *TypeInfo,
+};