closures.h

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/* -*- C -*-
 * Serene programming language
 * Copyright (C) 2019-2026 Sameer Rahmani <[email protected]>
 *
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <https://www.gnu.org/licenses/>.
 */
#pragma once
 
#include "serene/rt/abi.h"
#include "serene/rt/core.h"
#include "serene/utils.h"
 
// -----------------------------------------------------------------------------
// Closure
// -----------------------------------------------------------------------------
typedef struct srn_closure_t {
  /// Entry point on the closure, duh!
  srn_fnptr_t fn;
  /// The context in which this closure is defined. Context contains the
  /// environment for fn's free bindings too.
  srn_context_t *ctx;
  /// How many args are needed for full application. ((uint32_t) -1) means
  /// variadic
  uint32_t arity;
  // TODO(lxsameer): Can we use closures to model namespaces or packages? or
  // other constructs? For example a namespace can be represented as a closure
  // with the dependencies added to the environmet. A type of dependency
  // injection. But this time we can hash the closure and handle dependencies
  // based on the hash. Like how Unison does it on syntax level.
  // uint32_t flags;
} srn_closure_t;