mirror of
https://github.com/JakeHillion/drgn.git
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100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
// Copyright (c) Meta Platforms, Inc. and affiliates.
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include <string.h>
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#include <stdlib.h>
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#include "object_index.h"
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void drgn_object_index_init(struct drgn_object_index *oindex)
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{
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oindex->finders = NULL;
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}
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void drgn_object_index_deinit(struct drgn_object_index *oindex)
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{
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struct drgn_object_finder *finder;
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finder = oindex->finders;
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while (finder) {
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struct drgn_object_finder *next = finder->next;
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free(finder);
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finder = next;
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}
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}
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struct drgn_error *
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drgn_object_index_add_finder(struct drgn_object_index *oindex,
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drgn_object_find_fn fn, void *arg)
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{
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struct drgn_object_finder *finder;
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finder = malloc(sizeof(*finder));
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if (!finder)
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return &drgn_enomem;
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finder->fn = fn;
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finder->arg = arg;
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finder->next = oindex->finders;
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oindex->finders = finder;
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return NULL;
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}
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void drgn_object_index_remove_finder(struct drgn_object_index *oindex)
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{
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struct drgn_object_finder *finder = oindex->finders->next;
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free(oindex->finders);
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oindex->finders = finder;
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}
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struct drgn_error *drgn_object_index_find(struct drgn_object_index *oindex,
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const char *name,
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const char *filename,
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enum drgn_find_object_flags flags,
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struct drgn_object *ret)
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{
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struct drgn_error *err;
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size_t name_len;
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struct drgn_object_finder *finder;
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const char *kind_str;
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if ((flags & ~DRGN_FIND_OBJECT_ANY) || !flags) {
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return drgn_error_create(DRGN_ERROR_INVALID_ARGUMENT,
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"invalid find object flags");
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}
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name_len = strlen(name);
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finder = oindex->finders;
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while (finder) {
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err = finder->fn(name, name_len, filename, flags, finder->arg,
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ret);
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if (err != &drgn_not_found)
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return err;
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finder = finder->next;
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}
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switch (flags) {
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case DRGN_FIND_OBJECT_CONSTANT:
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kind_str = "constant ";
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break;
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case DRGN_FIND_OBJECT_FUNCTION:
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kind_str = "function ";
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break;
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case DRGN_FIND_OBJECT_VARIABLE:
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kind_str = "variable ";
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break;
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default:
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kind_str = "";
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break;
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}
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if (filename) {
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return drgn_error_format(DRGN_ERROR_LOOKUP,
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"could not find %s'%s' in '%s'",
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kind_str, name, filename);
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} else {
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return drgn_error_format(DRGN_ERROR_LOOKUP,
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"could not find %s'%s'", kind_str,
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name);
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}
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}
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