Compiler_Module_Name_Diagnostics.H

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/*
                          Aleph_w
 
  Data structures & Algorithms
  version 2.0.0b
  https://github.com/lrleon/Aleph-w
 
  This file is part of Aleph-w library
 
  Copyright (c) 2002-2026 Leandro Rabindranath Leon
 
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
 
  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
 
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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*/
 
#ifndef COMPILER_MODULE_NAME_DIAGNOSTICS_H
#define COMPILER_MODULE_NAME_DIAGNOSTICS_H
 
#include <string>
 
#include <Compiler_Module_Name_Resolver.H>
#include <ah-diagnostics.H>
 
namespace Aleph {
inline size_t compiler_emit_module_name_resolution_diagnostic(
  Diagnostic_Engine &diagnostics,
  const Source_Span &span,
  const Compiler_Module_Name_Resolution &resolution,
  const std::string &code,
  const std::string &subject)
{
  if (resolution.ok())
    return 0;
 
  switch (resolution.status)
    {
    case Compiler_Module_Name_Resolution_Status::Resolved:
      return 0;
 
    case Compiler_Module_Name_Resolution_Status::Missing_Module:
      return diagnostics
        .error(span,
               "cannot resolve " + subject + " '" + resolution.symbol_name + "' because module '"
                 + resolution.module_name + "' is not available")
        .code(code)
        .note("the current binding view does not contain that module")
        .help("ensure the source was loaded and its imports were resolved before semantic checks")
        .emit();
 
    case Compiler_Module_Name_Resolution_Status::Missing_Name:
      return diagnostics.error(span, "unknown " + subject + " '" + resolution.symbol_name + "'")
        .code(code)
        .note("module '" + resolution.module_name
              + "' does not expose that name through local declarations or direct imports")
        .help("declare the symbol locally or import a module that exports it")
        .emit();
 
    case Compiler_Module_Name_Resolution_Status::Wrong_Kind:
      return diagnostics.error(span, "invalid " + subject + " '" + resolution.symbol_name + "'")
        .code(code)
        .note("module '" + resolution.module_name + "' resolves that name as "
              + compiler_module_export_kind_name(resolution.binding.kind))
        .help("use a symbol exported with the expected kind")
        .emit();
 
    case Compiler_Module_Name_Resolution_Status::Ambiguous_Name:
      return diagnostics.error(span, "ambiguous " + subject + " '" + resolution.symbol_name + "'")
        .code(code)
        .note("module '" + resolution.module_name
              + "' sees multiple matching providers for that name")
        .help("rename one provider or reduce the set of direct imports")
        .emit();
    }
 
  return 0;
}
}  // namespace Aleph
 
#endif