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/*
* fy-path.h - YAML parser private path definitions
*
* Copyright (c) 2021 Pantelis Antoniou <pantelis.antoniou@konsulko.com>
*
* SPDX-License-Identifier: MIT
*/
#ifndef FY_PATH_H
#define FY_PATH_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdbool.h>
#include <libfyaml.h>
#include "fy-list.h"
#include "fy-typelist.h"
#include "fy-emit-accum.h"
FY_TYPE_FWD_DECL_LIST(path_component);
enum fy_path_component_type {
FYPCT_NONE, /* not yet instantiated */
FYPCT_MAP, /* it's a mapping */
FYPCT_SEQ, /* it's a sequence */
};
/* fwd declaration */
struct fy_document;
struct fy_document_builder;
#define FY_PATH_MAPPING_SHORT_KEY 32
struct fy_path_mapping_state {
bool root : 1; /* no keys, values yet */
bool await_key : 1;
bool accumulating_complex_key : 1;
bool has_key : 1; /* has a key */
bool is_complex_key : 1;
bool complex_key_complete : 1;
union {
struct {
struct fy_token *tag;
struct fy_token *key;
} scalar;
struct fy_document *complex_key;
};
void *key_user_data;
};
struct fy_path_sequence_state {
int idx;
};
struct fy_path_component {
struct fy_list_head node;
enum fy_path_component_type type;
union {
struct fy_path_mapping_state map;
struct fy_path_sequence_state seq;
};
void *user_data;
};
FY_TYPE_DECL_LIST(path_component);
static inline bool
fy_path_component_is_collection_root(struct fy_path_component *fypc)
{
if (!fypc)
return false;
switch (fypc->type) {
case FYPCT_NONE:
break;
case FYPCT_SEQ:
return fypc->seq.idx < 0;
case FYPCT_MAP:
return fypc->map.root;
}
return false;
}
FY_TYPE_FWD_DECL_LIST(path);
struct fy_path {
struct fy_list_head node;
struct fy_path_component_list recycled_component;
struct fy_path_component_list components;
struct fy_document_builder *fydb; /* for complex keys */
struct fy_path *parent; /* when we have a parent */
void *user_data;
};
FY_TYPE_DECL_LIST(path);
struct fy_path *fy_path_create(void);
void fy_path_destroy(struct fy_path *fypp);
void fy_path_reset(struct fy_path *fypp);
struct fy_path_component *fy_path_component_alloc(struct fy_path *fypp);
void fy_path_component_cleanup(struct fy_path_component *fypc);
void fy_path_component_free(struct fy_path_component *fypc);
void fy_path_component_destroy(struct fy_path_component *fypc);
void fy_path_component_recycle(struct fy_path *fypp, struct fy_path_component *fypc);
void fy_path_component_clear_state(struct fy_path_component *fypc);
struct fy_path_component *fy_path_component_create_mapping(struct fy_path *fypp);
struct fy_path_component *fy_path_component_create_sequence(struct fy_path *fypp);
#endif
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