kc3-lang/libxkbcommon/src/xkbcomp/types.c

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• Hash : 20329baf
  Author :
  Date : 2023-11-23T09:30:57
  

  xkbcomp: Use `steal` for better memory handling

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• src/xkbcomp/types.c

• /************************************************************
   * Copyright (c) 1994 by Silicon Graphics Computer Systems, Inc.
   *
   * Permission to use, copy, modify, and distribute this
   * software and its documentation for any purpose and without
   * fee is hereby granted, provided that the above copyright
   * notice appear in all copies and that both that copyright
   * notice and this permission notice appear in supporting
   * documentation, and that the name of Silicon Graphics not be
   * used in advertising or publicity pertaining to distribution
   * of the software without specific prior written permission.
   * Silicon Graphics makes no representation about the suitability
   * of this software for any purpose. It is provided "as is"
   * without any express or implied warranty.
   *
   * SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
   * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
   * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
   * GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
   * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
   * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
   * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
   * THE USE OR PERFORMANCE OF THIS SOFTWARE.
   *
   ********************************************************/
  
  #include "config.h"
  
  #include "xkbcomp-priv.h"
  #include "text.h"
  #include "vmod.h"
  #include "expr.h"
  #include "include.h"
  #include "util-mem.h"
  
  enum type_field {
      TYPE_FIELD_MASK = (1 << 0),
      TYPE_FIELD_MAP = (1 << 1),
      TYPE_FIELD_PRESERVE = (1 << 2),
      TYPE_FIELD_LEVEL_NAME = (1 << 3),
  };
  
  typedef struct {
      enum type_field defined;
      enum merge_mode merge;
  
      xkb_atom_t name;
      xkb_mod_mask_t mods;
      xkb_level_index_t num_levels;
      darray(struct xkb_key_type_entry) entries;
      darray(xkb_atom_t) level_names;
  } KeyTypeInfo;
  
  typedef struct {
      char *name;
      int errorCount;
      unsigned int include_depth;
  
      darray(KeyTypeInfo) types;
      struct xkb_mod_set mods;
  
      struct xkb_context *ctx;
  } KeyTypesInfo;
  
  /***====================================================================***/
  
  static inline const char *
  MapEntryTxt(KeyTypesInfo *info, struct xkb_key_type_entry *entry)
  {
      return ModMaskText(info->ctx, &info->mods, entry->mods.mods);
  }
  
  static inline const char *
  TypeTxt(KeyTypesInfo *info, KeyTypeInfo *type)
  {
      return xkb_atom_text(info->ctx, type->name);
  }
  
  static inline const char *
  TypeMaskTxt(KeyTypesInfo *info, KeyTypeInfo *type)
  {
      return ModMaskText(info->ctx, &info->mods, type->mods);
  }
  
  static inline bool
  ReportTypeShouldBeArray(KeyTypesInfo *info, KeyTypeInfo *type,
                          const char *field)
  {
      return ReportShouldBeArray(info->ctx, "key type", field,
                                 TypeTxt(info, type));
  }
  
  static inline bool
  ReportTypeBadType(KeyTypesInfo *info, xkb_message_code_t code,
                    KeyTypeInfo *type, const char *field, const char *wanted)
  {
      return ReportBadType(info->ctx, code, "key type", field,
                           TypeTxt(info, type), wanted);
  }
  
  /***====================================================================***/
  
  static void
  InitKeyTypesInfo(KeyTypesInfo *info, struct xkb_context *ctx,
                   unsigned int include_depth,
                   const struct xkb_mod_set *mods)
  {
      memset(info, 0, sizeof(*info));
      info->ctx = ctx;
      info->include_depth = include_depth;
      info->mods = *mods;
  }
  
  static void
  ClearKeyTypeInfo(KeyTypeInfo *type)
  {
      darray_free(type->entries);
      darray_free(type->level_names);
  }
  
  static void
  ClearKeyTypesInfo(KeyTypesInfo *info)
  {
      free(info->name);
      KeyTypeInfo *type;
      darray_foreach(type, info->types)
          ClearKeyTypeInfo(type);
      darray_free(info->types);
  }
  
  static KeyTypeInfo *
  FindMatchingKeyType(KeyTypesInfo *info, xkb_atom_t name)
  {
      KeyTypeInfo *old;
  
      darray_foreach(old, info->types)
          if (old->name == name)
              return old;
  
      return NULL;
  }
  
  static bool
  AddKeyType(KeyTypesInfo *info, KeyTypeInfo *new, bool same_file)
  {
      KeyTypeInfo *old;
      const int verbosity = xkb_context_get_log_verbosity(info->ctx);
  
      old = FindMatchingKeyType(info, new->name);
      if (old) {
          if (new->merge == MERGE_REPLACE || new->merge == MERGE_OVERRIDE) {
              if ((same_file && verbosity > 0) || verbosity > 9) {
                  log_warn(info->ctx,
                           XKB_WARNING_CONFLICTING_KEY_TYPE_DEFINITIONS,
                           "Multiple definitions of the %s key type; "
                           "Earlier definition ignored\n",
                           xkb_atom_text(info->ctx, new->name));
              }
  
              ClearKeyTypeInfo(old);
              *old = *new;
              darray_init(new->entries);
              darray_init(new->level_names);
              return true;
          }
  
          if (same_file)
              log_vrb(info->ctx, 4,
                      XKB_WARNING_CONFLICTING_KEY_TYPE_DEFINITIONS,
                      "Multiple definitions of the %s key type; "
                      "Later definition ignored\n",
                      xkb_atom_text(info->ctx, new->name));
  
          ClearKeyTypeInfo(new);
          return true;
      }
  
      darray_append(info->types, *new);
      return true;
  }
  
  /***====================================================================***/
  
  static void
  MergeIncludedKeyTypes(KeyTypesInfo *into, KeyTypesInfo *from,
                        enum merge_mode merge)
  {
      if (from->errorCount > 0) {
          into->errorCount += from->errorCount;
          return;
      }
  
      into->mods = from->mods;
  
      if (into->name == NULL) {
          into->name = steal(&from->name);
      }
  
      if (darray_empty(into->types)) {
          into->types = from->types;
          /* Types stolen via shallow copy, so reinitialize the array */
          darray_init(from->types);
      }
      else {
          KeyTypeInfo *type;
          darray_foreach(type, from->types) {
              type->merge = (merge == MERGE_DEFAULT ? type->merge : merge);
              if (!AddKeyType(into, type, false))
                  into->errorCount++;
          }
          /* Types were either shallow copied or reinitialized individually
             in `AddKeyType`, so we only need to free the array */
          darray_free(from->types);
      }
  }
  
  static void
  HandleKeyTypesFile(KeyTypesInfo *info, XkbFile *file, enum merge_mode merge);
  
  static bool
  HandleIncludeKeyTypes(KeyTypesInfo *info, IncludeStmt *include)
  {
      KeyTypesInfo included;
  
      if (ExceedsIncludeMaxDepth(info->ctx, info->include_depth)) {
          info->errorCount += 10;
          return false;
      }
  
      InitKeyTypesInfo(&included, info->ctx, 0 /* unused */, &info->mods);
      included.name = steal(&include->stmt);
  
      for (IncludeStmt *stmt = include; stmt; stmt = stmt->next_incl) {
          KeyTypesInfo next_incl;
          XkbFile *file;
  
          file = ProcessIncludeFile(info->ctx, stmt, FILE_TYPE_TYPES);
          if (!file) {
              info->errorCount += 10;
              ClearKeyTypesInfo(&included);
              return false;
          }
  
          InitKeyTypesInfo(&next_incl, info->ctx, info->include_depth + 1,
                           &included.mods);
  
          HandleKeyTypesFile(&next_incl, file, stmt->merge);
  
          MergeIncludedKeyTypes(&included, &next_incl, stmt->merge);
  
          ClearKeyTypesInfo(&next_incl);
          FreeXkbFile(file);
      }
  
      MergeIncludedKeyTypes(info, &included, include->merge);
      ClearKeyTypesInfo(&included);
  
      return (info->errorCount == 0);
  }
  
  /***====================================================================***/
  
  static bool
  SetModifiers(KeyTypesInfo *info, KeyTypeInfo *type, ExprDef *arrayNdx,
               ExprDef *value)
  {
      xkb_mod_mask_t mods;
  
      if (arrayNdx)
          log_warn(info->ctx, XKB_LOG_MESSAGE_NO_ID,
                   "The modifiers field of a key type is not an array; "
                   "Illegal array subscript ignored\n");
  
      if (!ExprResolveModMask(info->ctx, value, MOD_BOTH, &info->mods, &mods)) {
          log_err(info->ctx,
                  XKB_ERROR_UNSUPPORTED_MODIFIER_MASK,
                  "Key type mask field must be a modifier mask; "
                  "Key type definition ignored\n");
          return false;
      }
  
      if (type->defined & TYPE_FIELD_MASK) {
          log_warn(info->ctx, XKB_LOG_MESSAGE_NO_ID,
                   "Multiple modifier mask definitions for key type %s; "
                   "Using %s, ignoring %s\n",
                   xkb_atom_text(info->ctx, type->name),
                   TypeMaskTxt(info, type),
                   ModMaskText(info->ctx, &info->mods, mods));
          return false;
      }
  
      type->mods = mods;
      return true;
  }
  
  /***====================================================================***/
  
  static struct xkb_key_type_entry *
  FindMatchingMapEntry(KeyTypeInfo *type, xkb_mod_mask_t mods)
  {
      struct xkb_key_type_entry *entry;
  
      darray_foreach(entry, type->entries)
          if (entry->mods.mods == mods)
              return entry;
  
      return NULL;
  }
  
  static bool
  AddMapEntry(KeyTypesInfo *info, KeyTypeInfo *type,
              struct xkb_key_type_entry *new, bool clobber, bool report)
  {
      struct xkb_key_type_entry *old;
  
      old = FindMatchingMapEntry(type, new->mods.mods);
      if (old) {
          if (report && old->level != new->level) {
              log_warn(info->ctx,
                       XKB_WARNING_CONFLICTING_KEY_TYPE_MAP_ENTRY,
                       "Multiple map entries for %s in %s; "
                       "Using %d, ignoring %d\n",
                       MapEntryTxt(info, new), TypeTxt(info, type),
                       (clobber ? new->level : old->level) + 1,
                       (clobber ? old->level : new->level) + 1);
          }
          else {
              log_vrb(info->ctx, 10,
                      XKB_WARNING_CONFLICTING_KEY_TYPE_MAP_ENTRY,
                      "Multiple occurrences of map[%s]= %d in %s; Ignored\n",
                      MapEntryTxt(info, new), new->level + 1,
                      TypeTxt(info, type));
              return true;
          }
  
          if (clobber) {
              if (new->level >= type->num_levels)
                  type->num_levels = new->level + 1;
              old->level = new->level;
          }
  
          return true;
      }
  
      if (new->level >= type->num_levels)
          type->num_levels = new->level + 1;
  
      darray_append(type->entries, *new);
      return true;
  }
  
  static bool
  SetMapEntry(KeyTypesInfo *info, KeyTypeInfo *type, ExprDef *arrayNdx,
              ExprDef *value)
  {
      struct xkb_key_type_entry entry;
  
      if (arrayNdx == NULL)
          return ReportTypeShouldBeArray(info, type, "map entry");
  
      if (!ExprResolveModMask(info->ctx, arrayNdx, MOD_BOTH, &info->mods,
                              &entry.mods.mods))
          return ReportTypeBadType(info, XKB_ERROR_UNSUPPORTED_MODIFIER_MASK,
                                   type, "map entry", "modifier mask");
  
      if (entry.mods.mods & (~type->mods)) {
          log_vrb(info->ctx, 1,
                  XKB_WARNING_UNDECLARED_MODIFIERS_IN_KEY_TYPE,
                  "Map entry for modifiers not used by type %s; "
                  "Using %s instead of %s\n",
                  TypeTxt(info, type),
                  ModMaskText(info->ctx, &info->mods,
                              entry.mods.mods & type->mods),
                  MapEntryTxt(info, &entry));
          entry.mods.mods &= type->mods;
      }
  
      if (!ExprResolveLevel(info->ctx, value, &entry.level)) {
          log_err(info->ctx, XKB_ERROR_UNSUPPORTED_SHIFT_LEVEL,
                            "Level specifications in a key type must be integer; "
                            "Ignoring malformed level specification\n");
          return false;
      }
  
      entry.preserve.mods = 0;
  
      return AddMapEntry(info, type, &entry, true, true);
  }
  
  /***====================================================================***/
  
  static bool
  AddPreserve(KeyTypesInfo *info, KeyTypeInfo *type,
              xkb_mod_mask_t mods, xkb_mod_mask_t preserve_mods)
  {
      struct xkb_key_type_entry *entry;
      struct xkb_key_type_entry new;
  
      darray_foreach(entry, type->entries) {
          if (entry->mods.mods != mods)
              continue;
  
          /* Map exists without previous preserve (or "None"); override. */
          if (entry->preserve.mods == 0) {
              entry->preserve.mods = preserve_mods;
              return true;
          }
  
          /* Map exists with same preserve; do nothing. */
          if (entry->preserve.mods == preserve_mods) {
              log_vrb(info->ctx, 10,
                      XKB_WARNING_DUPLICATE_ENTRY,
                      "Identical definitions for preserve[%s] in %s; "
                      "Ignored\n",
                      ModMaskText(info->ctx, &info->mods, mods),
                      TypeTxt(info, type));
              return true;
          }
  
          /* Map exists with different preserve; latter wins. */
          log_vrb(info->ctx, 1,
                  XKB_WARNING_CONFLICTING_KEY_TYPE_PRESERVE_ENTRIES,
                  "Multiple definitions for preserve[%s] in %s; "
                  "Using %s, ignoring %s\n",
                  ModMaskText(info->ctx, &info->mods, mods),
                  TypeTxt(info, type),
                  ModMaskText(info->ctx, &info->mods, preserve_mods),
                  ModMaskText(info->ctx, &info->mods, entry->preserve.mods));
  
          entry->preserve.mods = preserve_mods;
          return true;
      }
  
      /*
       * Map does not exist, i.e. preserve[] came before map[].
       * Create a map with the specified mask mapping to Level1. The level
       * may be overridden later with an explicit map[] statement.
       */
      new.level = 0;
      new.mods.mods = mods;
      new.preserve.mods = preserve_mods;
      darray_append(type->entries, new);
      return true;
  }
  
  static bool
  SetPreserve(KeyTypesInfo *info, KeyTypeInfo *type, ExprDef *arrayNdx,
              ExprDef *value)
  {
      xkb_mod_mask_t mods, preserve_mods;
  
      if (arrayNdx == NULL)
          return ReportTypeShouldBeArray(info, type, "preserve entry");
  
      if (!ExprResolveModMask(info->ctx, arrayNdx, MOD_BOTH, &info->mods, &mods))
          return ReportTypeBadType(info, XKB_ERROR_UNSUPPORTED_MODIFIER_MASK,
                                   type, "preserve entry", "modifier mask");
  
      if (mods & ~type->mods) {
          const char *before, *after;
  
          before = ModMaskText(info->ctx, &info->mods, mods);
          mods &= type->mods;
          after = ModMaskText(info->ctx, &info->mods, mods);
  
          log_vrb(info->ctx, 1,
                  XKB_WARNING_UNDECLARED_MODIFIERS_IN_KEY_TYPE,
                  "Preserve entry for modifiers not used by the %s type; "
                  "Index %s converted to %s\n",
                  TypeTxt(info, type), before, after);
      }
  
      if (!ExprResolveModMask(info->ctx, value, MOD_BOTH, &info->mods,
                              &preserve_mods)) {
          log_err(info->ctx,
                  XKB_ERROR_UNSUPPORTED_MODIFIER_MASK,
                  "Preserve value in a key type is not a modifier mask; "
                  "Ignoring preserve[%s] in type %s\n",
                  ModMaskText(info->ctx, &info->mods, mods),
                  TypeTxt(info, type));
          return false;
      }
  
      if (preserve_mods & ~mods) {
          const char *before, *after;
  
          before = ModMaskText(info->ctx, &info->mods, preserve_mods);
          preserve_mods &= mods;
          after = ModMaskText(info->ctx, &info->mods, preserve_mods);
  
          log_vrb(info->ctx, 1,
                  XKB_WARNING_ILLEGAL_KEY_TYPE_PRESERVE_RESULT,
                  "Illegal value for preserve[%s] in type %s; "
                  "Converted %s to %s\n",
                  ModMaskText(info->ctx, &info->mods, mods),
                  TypeTxt(info, type), before, after);
      }
  
      return AddPreserve(info, type, mods, preserve_mods);
  }
  
  /***====================================================================***/
  
  static bool
  AddLevelName(KeyTypesInfo *info, KeyTypeInfo *type,
               xkb_level_index_t level, xkb_atom_t name, bool clobber)
  {
      /* New name. */
      if (level >= darray_size(type->level_names)) {
          darray_resize0(type->level_names, level + 1);
          goto finish;
      }
  
      /* Same level, same name. */
      if (darray_item(type->level_names, level) == name) {
          log_vrb(info->ctx, 10,
                  XKB_WARNING_DUPLICATE_ENTRY,
                  "Duplicate names for level %d of key type %s; Ignored\n",
                  level + 1, TypeTxt(info, type));
          return true;
      }
  
      /* Same level, different name. */
      if (darray_item(type->level_names, level) != XKB_ATOM_NONE) {
          const char *old, *new;
          old = xkb_atom_text(info->ctx,
                              darray_item(type->level_names, level));
          new = xkb_atom_text(info->ctx, name);
          log_vrb(info->ctx, 1,
                  XKB_WARNING_CONFLICTING_KEY_TYPE_LEVEL_NAMES,
                  "Multiple names for level %d of key type %s; "
                  "Using %s, ignoring %s\n",
                  level + 1, TypeTxt(info, type),
                  (clobber ? new : old), (clobber ? old : new));
  
          if (!clobber)
              return true;
      }
  
      /* XXX: What about different level, same name? */
  
  finish:
      darray_item(type->level_names, level) = name;
      return true;
  }
  
  static bool
  SetLevelName(KeyTypesInfo *info, KeyTypeInfo *type, ExprDef *arrayNdx,
               ExprDef *value)
  {
      xkb_level_index_t level;
      xkb_atom_t level_name;
  
      if (arrayNdx == NULL)
          return ReportTypeShouldBeArray(info, type, "level name");
  
      if (!ExprResolveLevel(info->ctx, arrayNdx, &level))
          return ReportTypeBadType(info, XKB_ERROR_UNSUPPORTED_SHIFT_LEVEL,
                                   type, "level name", "integer");
  
      if (!ExprResolveString(info->ctx, value, &level_name)) {
          log_err(info->ctx,
                  XKB_ERROR_WRONG_FIELD_TYPE,
                  "Non-string name for level %d in key type %s; "
                  "Ignoring illegal level name definition\n",
                  level + 1, xkb_atom_text(info->ctx, type->name));
          return false;
      }
  
      return AddLevelName(info, type, level, level_name, true);
  }
  
  /***====================================================================***/
  
  static bool
  SetKeyTypeField(KeyTypesInfo *info, KeyTypeInfo *type,
                  const char *field, ExprDef *arrayNdx, ExprDef *value)
  {
      bool ok = false;
      enum type_field type_field = 0;
  
      if (istreq(field, "modifiers")) {
          type_field = TYPE_FIELD_MASK;
          ok = SetModifiers(info, type, arrayNdx, value);
      }
      else if (istreq(field, "map")) {
          type_field = TYPE_FIELD_MAP;
          ok = SetMapEntry(info, type, arrayNdx, value);
      }
      else if (istreq(field, "preserve")) {
          type_field = TYPE_FIELD_PRESERVE;
          ok = SetPreserve(info, type, arrayNdx, value);
      }
      else if (istreq(field, "levelname") || istreq(field, "level_name")) {
          type_field = TYPE_FIELD_LEVEL_NAME;
          ok = SetLevelName(info, type, arrayNdx, value);
      } else {
          log_err(info->ctx,
                  XKB_ERROR_UNKNOWN_FIELD,
                  "Unknown field %s in key type %s; Definition ignored\n",
                  field, TypeTxt(info, type));
      }
  
      type->defined |= type_field;
      return ok;
  }
  
  static bool
  HandleKeyTypeBody(KeyTypesInfo *info, VarDef *def, KeyTypeInfo *type)
  {
      bool ok = true;
      const char *elem, *field;
      ExprDef *arrayNdx;
  
      for (; def; def = (VarDef *) def->common.next) {
          ok = ExprResolveLhs(info->ctx, def->name, &elem, &field,
                              &arrayNdx);
          if (!ok)
              continue;
  
          if (elem && istreq(elem, "type")) {
              log_err(info->ctx,
                      XKB_ERROR_INVALID_SET_DEFAULT_STATEMENT,
                      "Support for changing the default type has been removed; "
                      "Statement ignored\n");
              continue;
          }
  
          ok = SetKeyTypeField(info, type, field, arrayNdx, def->value);
      }
  
      return ok;
  }
  
  static bool
  HandleKeyTypeDef(KeyTypesInfo *info, KeyTypeDef *def, enum merge_mode merge)
  {
      KeyTypeInfo type = {
          .defined = 0,
          .merge = (def->merge == MERGE_DEFAULT ? merge : def->merge),
          .name = def->name,
          .mods = 0,
          .num_levels = 1,
          .entries = darray_new(),
          .level_names = darray_new(),
      };
  
      if (!HandleKeyTypeBody(info, def->body, &type) ||
          !AddKeyType(info, &type, true))
      {
          info->errorCount++;
          ClearKeyTypeInfo(&type);
          return false;
      }
  
      /* Type has been either stolen via shallow copy or reinitialized in
         `AddKeyType`: no need to free the arrays */
      return true;
  }
  
  static void
  HandleKeyTypesFile(KeyTypesInfo *info, XkbFile *file, enum merge_mode merge)
  {
      bool ok;
  
      free(info->name);
      info->name = strdup_safe(file->name);
  
      for (ParseCommon *stmt = file->defs; stmt; stmt = stmt->next) {
          switch (stmt->type) {
          case STMT_INCLUDE:
              ok = HandleIncludeKeyTypes(info, (IncludeStmt *) stmt);
              break;
          case STMT_TYPE:
              ok = HandleKeyTypeDef(info, (KeyTypeDef *) stmt, merge);
              break;
          case STMT_VAR:
              log_err(info->ctx,
                      XKB_ERROR_WRONG_STATEMENT_TYPE,
                      "Support for changing the default type has been removed; "
                      "Statement ignored\n");
              ok = true;
              break;
          case STMT_VMOD:
              ok = HandleVModDef(info->ctx, &info->mods, (VModDef *) stmt, merge);
              break;
          default:
              log_err(info->ctx,
                      XKB_ERROR_WRONG_STATEMENT_TYPE,
                      "Key type files may not include other declarations; "
                      "Ignoring %s\n", stmt_type_to_string(stmt->type));
              ok = false;
              break;
          }
  
          if (!ok)
              info->errorCount++;
  
          if (info->errorCount > 10) {
              log_err(info->ctx,
                      XKB_ERROR_INVALID_SYNTAX,
                      "Abandoning keytypes file \"%s\"\n", file->name);
              break;
          }
      }
  }
  
  /***====================================================================***/
  
  static bool
  CopyKeyTypesToKeymap(struct xkb_keymap *keymap, KeyTypesInfo *info)
  {
      unsigned num_types;
      struct xkb_key_type *types;
  
      num_types = darray_empty(info->types) ? 1 : darray_size(info->types);
      types = calloc(num_types, sizeof(*types));
      if (!types)
          return false;
  
      /*
       * If no types were specified, a default unnamed one-level type is
       * used for all keys.
       */
      if (darray_empty(info->types)) {
          struct xkb_key_type *type = &types[0];
  
          type->mods.mods = 0;
          type->num_levels = 1;
          type->entries = NULL;
          type->num_entries = 0;
          type->name = xkb_atom_intern_literal(keymap->ctx, "default");
          type->level_names = NULL;
          type->num_level_names = 0;
      }
      else {
          for (unsigned i = 0; i < num_types; i++) {
              KeyTypeInfo *def = &darray_item(info->types, i);
              struct xkb_key_type *type = &types[i];
  
              type->name = def->name;
              type->mods.mods = def->mods;
              type->num_levels = def->num_levels;
              darray_steal(def->level_names, &type->level_names, &type->num_level_names);
              darray_steal(def->entries, &type->entries, &type->num_entries);
          }
      }
  
      keymap->types_section_name = strdup_safe(info->name);
      XkbEscapeMapName(keymap->types_section_name);
      keymap->num_types = num_types;
      keymap->types = types;
      keymap->mods = info->mods;
      return true;
  }
  
  /***====================================================================***/
  
  bool
  CompileKeyTypes(XkbFile *file, struct xkb_keymap *keymap,
                  enum merge_mode merge)
  {
      KeyTypesInfo info;
  
      InitKeyTypesInfo(&info, keymap->ctx, 0, &keymap->mods);
  
      HandleKeyTypesFile(&info, file, merge);
      if (info.errorCount != 0)
          goto err_info;
  
      if (!CopyKeyTypesToKeymap(keymap, &info))
          goto err_info;
  
      ClearKeyTypesInfo(&info);
      return true;
  
  err_info:
      ClearKeyTypesInfo(&info);
      return false;
  }
  

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