// Copyright (c) StellaOps. All rights reserved.
// Licensed under BUSL-1.1. See LICENSE in the project root.
using System.Collections.Immutable;

namespace StellaOps.BinaryIndex.Decompiler;

/// <summary>
/// Abstract syntax tree node.
/// </summary>
public abstract record AstNode(
    AstNodeType Type,
    ImmutableArray<AstNode> Children,
    SourceLocation? Location);

/// <summary>
/// Types of AST nodes.
/// </summary>
public enum AstNodeType
{
    // Structure
    Function,
    Block,
    Parameter,

    // Control flow
    If,
    While,
    For,
    DoWhile,
    Switch,
    Case,
    Default,
    Return,
    Break,
    Continue,
    Goto,
    Label,

    // Expressions
    Assignment,
    BinaryOp,
    UnaryOp,
    TernaryOp,
    Call,
    Cast,
    Sizeof,

    // Operands
    Variable,
    Constant,
    StringLiteral,
    ArrayAccess,
    FieldAccess,
    PointerDeref,
    AddressOf,

    // Declarations
    VariableDecl,
    TypeDef
}