import "bond_const.bond"

namespace bond

struct SerializableExceptionBase
{
    8189: string message;
}


// Empty schema with no fields
struct Void
{
}

// Schema with the same memory layout as Windows GUID
struct GUID
{
    0: uint32 Data1;
    1: uint16 Data2;
    2: uint16 Data3;
    3: uint64 Data4;
}

// Field modifier enumerator
enum Modifier
{
    Optional,
    Required,
    RequiredOptional
}

// Schema used to represent field's default value
struct Variant
{
    0: uint64 uint_value;
    1: int64 int_value;
    2: double double_value;
    3: string string_value;
    4: wstring wstring_value;
    5: bool nothing;
}

// Schema representing field or struct metadata
struct Metadata
{
    // Name of the field or struct
    0: string name;
    
    // Fully qualified name, used only for structs
    1: string qualified_name;

    // Attributes
    2: map<string, string> attributes;

    // Field modifier, not used for structs
    3: Modifier modifier = Optional;

    // Default value of the field, not used for structs
    4: Variant default_value;
}

// Schema representing a type within SchemaDef
struct TypeDef
{
    // Type identifier
    0: BondDataType id = BT_STRUCT;
    
    // Index of struct definition in SchemaDef.structs when id == BT_STRUCT
    1: uint16 struct_def = 0;
    
    // Type definition for:
    //  list elements (id == BT_LIST),
    //  set elements (id == BT_SET),
    //  or mapped value (id == BT_MAP)
    2: nullable<TypeDef> element;
    
    // Type definition for map key when id == BT_MAP
    3: nullable<TypeDef> key;
    
    // True if the type is bonded<T>; used only when id == BT_STRUCT
    4: bool bonded_type;
}

// Schema representing a field definition
struct FieldDef
{
    // Field metadata
    0: Metadata metadata;           
    
    // Field ordinal
    1: uint16 id;

    // Field type definition
    [HaskellName("typedef")]
    2: TypeDef type;
}

// Schema representing a struct definition
struct StructDef
{
    // Struct metadata
    0: Metadata metadata;

    // Type definition of base struct
    1: nullable<TypeDef> base_def;
    
    // List of field definitions
    2: vector<FieldDef> fields;
}


// Schema used to represent schema definition
struct SchemaDef
{
    // List of struct definitions referenced in the schema
    0: vector<StructDef> structs;

    // Root struct of the schema
    1: TypeDef root; 
}

// Generic schema with one field of specified type
struct Box<T>
{
    0: T value;
}