// Copyright 2020 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package analysis

// Map from fully qualified name to type.kind, e.g.
// "fuchsia.hardware.camera/Device": "interface"
type decls map[string]string

type dependency struct {
	Name         LibraryName
	Declarations decls
}

type location struct {
	Filename             string
	Line, Column, Length int
}

type attribute struct {
	Name  string
	Value string
}

type TypeKind string

const (
	ArrayType      TypeKind = "array"
	VectorType              = "vector"
	StringType              = "string"
	HandleType              = "handle"
	RequestType             = "request"
	PrimitiveType           = "primitive"
	IdentifierType          = "identifier"
)

type elementType struct {
	Kind       string
	Identifier string `json:"identifier,omitempty"`
	Subtype    string `json:"subtype,omitempty"`
}

type typeCtor struct {
	Name string
	Args []typeCtor
}

type declType struct {
	Kind        TypeKind
	ElementType elementType `json:"element_type,omitempty"`
	Identifier  string      `json:"identifier,omitempty"`
	Subtype     string      `json:"subtype,omitempty"`
}

type member struct {
	Name          string
	Loc           location    `json:"location"`
	Type          declType    `json:"type,omitempty"`
	FromTypeAlias typeCtor    `json:"experimental_maybe_from_type_alias,omitempty"`
	Attrs         []attribute `json:"maybe_attributes,omitempty"`
}

type method struct {
	Name          string
	Loc           location `json:"location"`
	MaybeRequest  []member
	MaybeResponse []member
	Attrs         []attribute `json:"maybe_attributes,omitempty"`
}

type bitsDecl struct {
	Name          string
	Loc           location `json:"location"`
	Type          declType
	FromTypeAlias typeCtor    `json:"experimental_maybe_from_type_alias,omitempty"`
	Attrs         []attribute `json:"maybe_attributes,omitempty"`
	Members       []member
}

type enumDecl struct {
	Name string
	Loc  location `json:"location"`
	// For some reason, Bits have a full type in the JSON IR, while enums have
	// a string
	Type          string
	FromTypeAlias typeCtor    `json:"experimental_maybe_from_type_alias,omitempty"`
	Attrs         []attribute `json:"maybe_attributes,omitempty"`
	Members       []member
}

type constDecl struct {
	Name          string
	Loc           location `json:"location"`
	Type          declType
	FromTypeAlias typeCtor    `json:"experimental_maybe_from_type_alias,omitempty"`
	Attrs         []attribute `json:"maybe_attributes,omitempty"`
}

type protocolDecl struct {
	Name    string
	Loc     location `json:"location"`
	Methods []method
	Attrs   []attribute `json:"maybe_attributes,omitempty"`
}

type serviceDecl struct {
	Name    string
	Loc     location `json:"location"`
	Members []member
	Attrs   []attribute `json:"maybe_attributes,omitempty"`
}

type structDecl struct {
	Name    string
	Loc     location `json:"location"`
	Members []member
	Attrs   []attribute `json:"maybe_attributes,omitempty"`
}

type tableDecl struct {
	Name    string
	Loc     location `json:"location"`
	Members []member
	Attrs   []attribute `json:"maybe_attributes,omitempty"`
}

type unionDecl struct {
	Name    string
	Loc     location `json:"location"`
	Members []member
	Attrs   []attribute `json:"maybe_attributes,omitempty"`
}

type typeAliasDecl struct {
	Name     string
	Loc      location    `json:"location"`
	TypeCtor typeCtor    `json:"partial_type_ctor"`
	Attrs    []attribute `json:"maybe_attributes,omitempty"`
}

// TODO: rename to FidlJSONIR, or JSONLibrary?

// FidlLibrary is the type of the deserialized JSON IR of a FIDL library.
type FidlLibrary struct {
	Version        string
	Name           string
	Deps           []dependency    `json:"library_dependencies"`
	BitsDecls      []bitsDecl      `json:"bits_declarations"`
	ConstDecls     []constDecl     `json:"const_declarations"`
	EnumDecls      []enumDecl      `json:"enum_declarations"`
	ProtocolDecls  []protocolDecl  `json:"interface_declarations"`
	ServiceDecls   []serviceDecl   `json:"service_declarations"`
	StructDecls    []structDecl    `json:"struct_declarations"`
	TableDecls     []tableDecl     `json:"table_declarations"`
	UnionDecls     []unionDecl     `json:"union_declarations"`
	TypeAliasDecls []typeAliasDecl `json:"type_alias_declarations"`
	Decls          decls           `json:"declarations"`
}