#ifndef __SCC_AST_H__
#define __SCC_AST_H__

#include "ast_def.h"
#include "ast_dump.h"

// decls can be null but maybe warning
static inline void
scc_ast_translation_unit_init(scc_ast_translation_unit_t *translation_unit,
                              scc_ast_decl_vec_t *decls, scc_pos_t loc) {
    Assert(translation_unit != null);
    translation_unit->base.type = SCC_AST_TRANSLATION_UNIT;
    translation_unit->base.loc = loc;
    if (decls == null) {
        scc_vec_init(translation_unit->declarations);
    } else {
        translation_unit->declarations = *decls;
        scc_vec_init(*decls);
    }
}

static inline void scc_ast_decl_list_init(scc_ast_decl_t *decl,
                                          scc_ast_decl_vec_t *list_move,
                                          scc_pos_t loc) {
    Assert(decl != null && list_move != null);
    decl->base.loc = loc;
    decl->base.type = SCC_AST_DECL_LIST;
    decl->name = null;
    decl->list.vars = *list_move;
    scc_vec_init(*list_move);
}

// name and var_init can be null
static inline void scc_ast_decl_unsafe_val_init(scc_ast_decl_t *decl,
                                                scc_ast_type_t *type,
                                                const char *name,
                                                scc_ast_expr_t *var_init,
                                                scc_pos_t loc) {
    Assert(decl != null && type != null);
    decl->base.loc = loc;
    decl->base.type = SCC_AST_DECL_VAR;
    decl->name = name;
    decl->var.type = type;
    decl->var.init = var_init;
}

// var_init can be null
static inline void scc_ast_decl_val_init(scc_ast_decl_t *decl,
                                         scc_ast_type_t *type, const char *name,
                                         scc_ast_expr_t *var_init,
                                         scc_pos_t loc) {
    Assert(decl != null && name != null && type != null);
    decl->base.loc = loc;
    decl->base.type = SCC_AST_DECL_VAR;
    decl->name = name;
    decl->var.type = type;
    decl->var.init = var_init;
}

// body can be null
static inline void scc_ast_decl_func_init(scc_ast_decl_t *decl,
                                          scc_ast_type_t *type,
                                          const char *name,
                                          scc_ast_stmt_t *body, scc_pos_t loc) {
    Assert(decl != null && name != null && type != null);
    decl->base.loc = loc;
    decl->base.type = SCC_AST_DECL_FUNC;
    decl->name = name;
    decl->func.type = type;
    Assert(type->base.type == SCC_AST_TYPE_FUNCTION);
    decl->func.body = body;
}

// name can be null
static inline void scc_ast_decl_param_init(scc_ast_decl_t *decl,
                                           scc_ast_type_t *type,
                                           const char *name, scc_pos_t loc) {
    Assert(decl != null && type != null);
    decl->base.loc = loc;
    decl->base.type = SCC_AST_DECL_PARAM;
    decl->name = name;
    decl->param.type = type;
}

static inline void _scc_ast_decl_record_init(scc_ast_decl_t *decl,
                                             scc_ast_node_type_t type,
                                             const char *name,
                                             scc_ast_decl_vec_t *fields_move,
                                             scc_pos_t loc) {
    Assert(decl != null);
    decl->base.loc = loc;
    decl->base.type = type;
    decl->name = name;
    if (fields_move == null) {
        scc_vec_init(decl->record.fields);
    } else {
        decl->record.fields = *fields_move;
        scc_vec_init(*fields_move);
    }
}

// name and fields can be null
static inline void scc_ast_decl_struct_init(scc_ast_decl_t *decl,
                                            const char *name,
                                            scc_ast_decl_vec_t *fields_move,
                                            scc_pos_t loc) {
    _scc_ast_decl_record_init(decl, SCC_AST_DECL_STRUCT, name, fields_move,
                              loc);
}

// name and fields can be null
static inline void scc_ast_decl_union_init(scc_ast_decl_t *decl,
                                           const char *name,
                                           scc_ast_decl_vec_t *fields_move,
                                           scc_pos_t loc) {
    _scc_ast_decl_record_init(decl, SCC_AST_DECL_UNION, name, fields_move, loc);
}

// name and fields can be null
static inline void scc_ast_decl_enum_init(scc_ast_decl_t *decl,
                                          const char *name,
                                          scc_ast_decl_vec_t *fields_move,
                                          scc_pos_t loc) {
    _scc_ast_decl_record_init(decl, SCC_AST_DECL_ENUM, name, fields_move, loc);
}

static inline void scc_ast_decl_typedef_init(scc_ast_decl_t *decl,
                                             const char *name,
                                             scc_ast_type_t *type,
                                             scc_pos_t loc) {
    Assert(decl != null && name != null && type != null);
    decl->base.loc = loc;
    decl->base.type = SCC_AST_DECL_TYPEDEF;
    decl->name = name;
    decl->typedef_decl.type = type;
}

// items can be null
static inline void scc_ast_stmt_compound_init(
    scc_ast_stmt_t *stmt, scc_ast_block_item_vec_t *items_move, scc_pos_t loc) {
    Assert(stmt != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_COMPOUND;
    if (items_move == null) {
        scc_vec_init(stmt->compound.block_items);
    } else {
        stmt->compound.block_items = *items_move;
        scc_vec_init(*items_move);
    }
}

// expr can be null
static inline void scc_ast_stmt_expr_init(scc_ast_stmt_t *stmt,
                                          scc_ast_expr_t *expr, scc_pos_t loc) {
    Assert(stmt != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_EXPR;
    stmt->expr.expr = expr;
}

// opt_else can be null
static inline void scc_ast_stmt_if_init(scc_ast_stmt_t *stmt,
                                        scc_ast_expr_t *cond,
                                        scc_ast_stmt_t *then,
                                        scc_ast_stmt_t *opt_else,
                                        scc_pos_t loc) {
    Assert(stmt != null && cond != null && then != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_IF;
    stmt->if_stmt.cond = cond;
    stmt->if_stmt.then_stmt = then;
    stmt->if_stmt.opt_else_stmt = opt_else;
}

static inline void scc_ast_stmt_while_init(scc_ast_stmt_t *stmt,
                                           scc_ast_expr_t *cond,
                                           scc_ast_stmt_t *body,
                                           scc_pos_t loc) {
    Assert(stmt != null && cond != null && body != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_WHILE;
    stmt->while_stmt.cond = cond;
    stmt->while_stmt.body = body;
}

static inline void scc_ast_stmt_do_while_init(scc_ast_stmt_t *stmt,
                                              scc_ast_expr_t *cond,
                                              scc_ast_stmt_t *body,
                                              scc_pos_t loc) {
    Assert(stmt != null && cond != null && body != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_DO_WHILE;
    stmt->while_stmt.cond = cond;
    stmt->while_stmt.body = body;
}

// FIXME
static inline void scc_ast_stmt_for_init(scc_ast_stmt_t *stmt,
                                         scc_ast_node_t *init,
                                         scc_ast_expr_t *cond,
                                         scc_ast_expr_t *incr,
                                         scc_ast_stmt_t *body, scc_pos_t loc) {
    Assert(stmt != null && body != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_FOR;
    stmt->for_stmt.init = init;
    stmt->for_stmt.cond = cond;
    stmt->for_stmt.incr = incr;
    stmt->for_stmt.body = body;
}

static inline void scc_ast_stmt_switch_init(scc_ast_stmt_t *stmt,
                                            scc_ast_expr_t *cond,
                                            scc_ast_stmt_t *body,
                                            scc_pos_t loc) {
    Assert(stmt != null && cond != null && body != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_SWITCH;
    stmt->switch_stmt.cond = cond;
    stmt->switch_stmt.body = body;
}

static inline void scc_ast_stmt_case_init(scc_ast_stmt_t *stmt,
                                          scc_ast_expr_t *cond,
                                          scc_ast_stmt_t *body, scc_pos_t loc) {
    Assert(stmt != null && cond != null && body != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_CASE;
    stmt->case_stmt.expr = cond;
    stmt->case_stmt.stmt = body;
}

static inline void scc_ast_stmt_default_init(scc_ast_stmt_t *stmt,
                                             scc_ast_stmt_t *body,
                                             scc_pos_t loc) {
    Assert(stmt != null && body != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_DEFAULT;
    stmt->default_stmt.stmt = body;
}

static inline void scc_ast_stmt_break_init(scc_ast_stmt_t *stmt,
                                           scc_pos_t loc) {
    Assert(stmt != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_BREAK;
    stmt->jump._target = null;
}

static inline void scc_ast_stmt_continue_init(scc_ast_stmt_t *stmt,
                                              scc_pos_t loc) {
    Assert(stmt != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_CONTINUE;
    stmt->jump._target = null;
}

// expr can be null
static inline void scc_ast_stmt_return_init(scc_ast_stmt_t *stmt,
                                            scc_ast_expr_t *expr,
                                            scc_pos_t loc) {
    Assert(stmt != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_RETURN;
    stmt->return_stmt.expr = expr;
}

static inline void scc_ast_stmt_goto_init(scc_ast_stmt_t *stmt,
                                          const char *label, scc_pos_t loc) {
    Assert(stmt != null && label != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_GOTO;
    stmt->goto_stmt.label = label;
    stmt->goto_stmt._target = null;
}

static inline void scc_ast_stmt_label_init(scc_ast_stmt_t *stmt,
                                           const char *label,
                                           scc_ast_stmt_t *body,
                                           scc_pos_t loc) {
    Assert(stmt != null);
    stmt->base.loc = loc;
    stmt->base.type = SCC_AST_STMT_LABEL;
    stmt->label_stmt.label = label;
    stmt->label_stmt.stmt = body;
}

static inline void scc_ast_expr_binary_init(scc_ast_expr_t *expr,
                                            scc_ast_expr_op_t op,
                                            scc_ast_expr_t *lhs,
                                            scc_ast_expr_t *rhs,
                                            scc_pos_t loc) {
    Assert(expr != null && lhs != null && rhs != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_BINARY;
    expr->binary.op = op;
    expr->binary.lhs = lhs;
    expr->binary.rhs = rhs;
}

static inline void scc_ast_expr_unary_init(scc_ast_expr_t *expr,
                                           scc_ast_expr_op_t op,
                                           scc_ast_expr_t *operand,
                                           scc_pos_t loc) {
    Assert(expr != null && operand != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_UNARY;
    expr->unary.op = op;
    expr->unary.operand = operand;
}

static inline void scc_ast_expr_cond_init(scc_ast_expr_t *expr,
                                          scc_ast_expr_t *cond,
                                          scc_ast_expr_t *then_expr,
                                          scc_ast_expr_t *else_expr,
                                          scc_pos_t loc) {
    Assert(expr != null && cond != null && then_expr != null &&
           else_expr != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_COND;
    expr->cond.cond = cond;
    expr->cond.then_expr = then_expr;
    expr->cond.else_expr = else_expr;
}

// args can be null
static inline void scc_ast_expr_call_init(scc_ast_expr_t *expr,
                                          scc_ast_expr_t *callee,
                                          scc_ast_expr_vec_t *args,
                                          scc_pos_t loc) {
    Assert(expr != null && callee != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_CALL;
    expr->call.callee = callee;
    if (args == null) {
        scc_vec_init(expr->call.args);
    } else {
        expr->call.args = *args;
    }
}

// SCC_AST_EXPR_ARRAY_SUBSCRIPT,  // 数组下标
static inline void scc_ast_expr_array_subscript_init(scc_ast_expr_t *expr,
                                                     scc_ast_expr_t *array,
                                                     scc_ast_expr_t *index,
                                                     scc_pos_t loc) {
    Assert(expr != null && array != null && index != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_ARRAY_SUBSCRIPT;
    expr->subscript.array = array;
    expr->subscript.index = index;
}

static inline void _scc_ast_expr_member_init(scc_ast_expr_t *expr,
                                             scc_ast_node_type_t type,
                                             scc_ast_expr_t *object,
                                             const char *member,
                                             scc_pos_t loc) {
    Assert(expr != null && object != null && member != null);
    expr->base.loc = loc;
    expr->base.type = type;
    expr->member.base = object;
    expr->member.name = member;
    expr->member._target_idx = 0;
}

static inline void scc_ast_expr_member_init(scc_ast_expr_t *expr,
                                            scc_ast_expr_t *object,
                                            const char *member, scc_pos_t loc) {
    _scc_ast_expr_member_init(expr, SCC_AST_EXPR_MEMBER, object, member, loc);
}

static inline void scc_ast_expr_ptr_member_init(scc_ast_expr_t *expr,
                                                scc_ast_expr_t *object,
                                                const char *member,
                                                scc_pos_t loc) {
    _scc_ast_expr_member_init(expr, SCC_AST_EXPR_PTR_MEMBER, object, member,
                              loc);
}

static inline void scc_ast_expr_cast_init(scc_ast_expr_t *expr,
                                          scc_ast_type_t *type,
                                          scc_ast_expr_t *operand,
                                          scc_pos_t loc) {
    Assert(expr != null && type != null && operand != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_CAST;
    expr->cast.type = type;
    expr->cast.expr = operand;
}

// type and target_expr can be null but it only one of them can be null
static inline void scc_ast_expr_sizeof_init(scc_ast_expr_t *expr,
                                            scc_ast_type_t *type,
                                            scc_ast_expr_t *target_expr,
                                            scc_pos_t loc) {
    Assert(expr != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_SIZE_OF;
    expr->attr_of.type = type;
    expr->attr_of.expr = target_expr;
}

// type and target_expr can be null but it only one of them can be null
static inline void scc_ast_expr_alignof_init(scc_ast_expr_t *expr,
                                             scc_ast_type_t *type,
                                             scc_ast_expr_t *target_expr,
                                             scc_pos_t loc) {
    Assert(expr != null);
    expr->base.loc = loc;
    expr->base.type =
        SCC_AST_EXPR_SIZE_OF; // 注意：这里使用了 SIZE_OF，可能需要改为 ALIGN_OF
    expr->attr_of.type = type;
    expr->attr_of.expr = target_expr;
}

// lhs_exprs and rhs_exprs can be null
static inline void scc_ast_expr_compound_init(scc_ast_expr_t *expr,
                                              scc_ast_expr_t *base,
                                              scc_ast_expr_vec_t *lhs_exprs,
                                              scc_ast_expr_vec_t *rhs_exprs,
                                              scc_pos_t loc) {
    Assert(expr != null && base != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_COMPOUND;
    expr->compound.base = base;

    if (lhs_exprs == null) {
        scc_vec_init(expr->compound.lhs_exprs);
    } else {
        expr->compound.lhs_exprs = *lhs_exprs;
        scc_vec_init(*lhs_exprs);
    }

    if (rhs_exprs == null) {
        scc_vec_init(expr->compound.rhs_exprs);
    } else {
        expr->compound.rhs_exprs = *rhs_exprs;
        scc_vec_init(*rhs_exprs);
    }
}

static inline void scc_ast_expr_literal_init(scc_ast_expr_t *expr,
                                             scc_ast_node_type_t type,
                                             const char *value, cbool owned,
                                             scc_pos_t loc) {
    Assert(expr != null && value != null);
    expr->base.loc = loc;
    expr->base.type = type;
    expr->literal.lexme = value;
    expr->literal.owned = owned;
}

static inline void scc_ast_expr_literal_int_init(scc_ast_expr_t *expr,
                                                 const char *value, cbool owned,
                                                 scc_pos_t loc) {
    scc_ast_expr_literal_init(expr, SCC_AST_EXPR_INT_LITERAL, value, owned,
                              loc);
}

static inline void scc_ast_expr_literal_float_init(scc_ast_expr_t *expr,
                                                   const char *value,
                                                   cbool owned, scc_pos_t loc) {
    scc_ast_expr_literal_init(expr, SCC_AST_EXPR_FLOAT_LITERAL, value, owned,
                              loc);
}
static inline void scc_ast_expr_literal_char_init(scc_ast_expr_t *expr,
                                                  const char *value,
                                                  cbool owned, scc_pos_t loc) {
    scc_ast_expr_literal_init(expr, SCC_AST_EXPR_CHAR_LITERAL, value, owned,
                              loc);
}
static inline void scc_ast_expr_literal_string_init(scc_ast_expr_t *expr,
                                                    const char *value,
                                                    cbool owned,
                                                    scc_pos_t loc) {
    scc_ast_expr_literal_init(expr, SCC_AST_EXPR_STRING_LITERAL, value, owned,
                              loc);
}

static inline void scc_ast_expr_identifier_init(scc_ast_expr_t *expr,
                                                const char *name,
                                                scc_pos_t loc) {
    Assert(expr != null && name != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_IDENTIFIER;
    expr->identifier.name = name;
    expr->identifier._target = null;
}

static inline void scc_ast_expr_lvalue_init(scc_ast_expr_t *expr,
                                            scc_ast_type_t *type,
                                            scc_pos_t loc) {
    Assert(expr != null && type != null);
    expr->base.loc = loc;
    expr->base.type = SCC_AST_EXPR_LVALUE;
    expr->lvalue.type = type;
}

// have defined builtin type
static inline void scc_ast_type_builtin_init(scc_ast_type_t *type,
                                             scc_ast_builtin_type_t builtin,
                                             scc_pos_t loc) {
    Assert(type != null);
    type->base.loc = loc;
    type->base.type = SCC_AST_TYPE_BUILTIN;
    type->builtin.type = builtin;
    type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
}

static inline void scc_ast_type_pointer_init(scc_ast_type_t *type,
                                             scc_ast_type_t *pointee,
                                             scc_pos_t loc) {
    Assert(type != null && pointee != null);
    type->base.loc = loc;
    type->base.type = SCC_AST_TYPE_POINTER;
    type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
    type->pointer.pointee = pointee;
}

// size can be null
static inline void scc_ast_type_array_init(scc_ast_type_t *type,
                                           scc_ast_type_t *element,
                                           scc_ast_expr_t *size,
                                           scc_pos_t loc) {
    Assert(type != null && element != null);
    type->base.loc = loc;
    type->base.type = SCC_AST_TYPE_ARRAY;
    type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
    type->array.element = element;
    type->array.size = size;
}

// return_type and params can be null
static inline void scc_ast_type_function_init(scc_ast_type_t *type,
                                              scc_ast_type_t *return_type,
                                              scc_ast_decl_vec_t *params,
                                              scc_pos_t loc) {
    Assert(type != null);
    type->base.loc = loc;
    type->base.type = SCC_AST_TYPE_FUNCTION;
    type->function.return_type = return_type;
    type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
    if (params == null) {
        scc_vec_init(type->function.params);
    } else {
        type->function.params = *params;
        scc_vec_init(*params);
    }
}

static inline void _scc_ast_type_record_init(scc_ast_type_t *type,
                                             scc_ast_node_type_t type_kind,
                                             const char *name,
                                             scc_ast_decl_t *decl,
                                             scc_pos_t loc) {
    Assert(type != null);
    type->base.loc = loc;
    type->base.type = type_kind;
    type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
    type->record.name = name;
    type->record.decl = decl;
}

// name and decl can be null
static inline void scc_ast_type_struct_init(scc_ast_type_t *type,
                                            const char *name,
                                            scc_ast_decl_t *decl,
                                            scc_pos_t loc) {
    _scc_ast_type_record_init(type, SCC_AST_TYPE_STRUCT, name, decl, loc);
}

// name and decl can be null
static inline void scc_ast_type_union_init(scc_ast_type_t *type,
                                           const char *name,
                                           scc_ast_decl_t *decl,
                                           scc_pos_t loc) {
    _scc_ast_type_record_init(type, SCC_AST_TYPE_UNION, name, decl, loc);
}

// name and decl can be null
static inline void scc_ast_type_enum_init(scc_ast_type_t *type,
                                          const char *name,
                                          scc_ast_decl_t *decl, scc_pos_t loc) {
    _scc_ast_type_record_init(type, SCC_AST_TYPE_ENUM, name, decl, loc);
}

static inline void scc_ast_type_typedef_init(scc_ast_type_t *type,
                                             const char *name,
                                             scc_ast_decl_t *target,
                                             scc_pos_t loc) {
    Assert(type != null && target != null);
    type->base.loc = loc;
    type->base.type = SCC_AST_TYPE_TYPEDEF;
    type->quals = (scc_ast_decl_specifier_t){0}; // FIXME
    type->typedef_type.name = name;
    type->typedef_type.decl = target;
}

#endif /* __SCC_AST_H__ */