144 lines
3.1 KiB
C
144 lines
3.1 KiB
C
#ifndef YAML_H
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#define YAML_H
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#include <stdlib.h>
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typedef enum {
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YAML_TYPE_STRING, /**< A value that represents a string. */
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YAML_TYPE_NUMBER, /**< A value that represents a number. */
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YAML_TYPE_OBJECT, /**< A value that represents an object. */
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YAML_TYPE_ARRAY, /**< A value that represents an array. */
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YAML_TYPE_TRUE, /**< A value that represents true. */
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YAML_TYPE_FALSE, /**< A value that represents false. */
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YAML_TYPE_NULL, /**< A value that represents null. */
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} yaml_type_t;
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typedef struct {
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void *data;
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yaml_type_t type;
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} yaml_value_t;
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typedef struct {
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const char *data;
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size_t length;
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} yaml_string_t;
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typedef struct {
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const char *data;
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size_t length;
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} yaml_number_t;
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typedef struct yaml_object_field_s {
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yaml_string_t *name;
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yaml_value_t *value;
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struct yaml_object_field_s *next;
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} yaml_object_field_t;
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typedef struct {
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yaml_object_field_t *head;
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size_t count;
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} yaml_object_t;
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typedef struct yaml_array_element_s {
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yaml_value_t *value;
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struct yaml_array_element_s *next;
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} yaml_array_element_t;
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typedef struct {
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yaml_array_element_t *head;
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size_t count;
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} yaml_array_t;
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/**
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* Parse a UTF-8 encoded string into a value object.
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*
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* Returns `NULL` if parsing fails.
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*/
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yaml_value_t *yaml_parse(const void *, size_t);
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/**
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* Traverse the tree to retrieve a specific sub-value from a root value.
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*
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* Returns `NULL` if the requested sub-value does not exist.
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*/
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yaml_value_t *yaml_get(const yaml_value_t *, const char *);
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/**
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* Access a value object as a string.
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*
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* Returns `NULL` if the value is not a string.
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*/
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yaml_string_t *yaml_value_as_string(const yaml_value_t *);
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/**
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* Access a value object as a number.
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*
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* Returns `NULL` if the value is not a number.
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*/
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yaml_number_t *yaml_value_as_number(const yaml_value_t *);
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/**
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* Access a value object as an object.
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*
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* Returns `NULL` if the value is not an object.
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*/
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yaml_object_t *yaml_value_as_object(const yaml_value_t *);
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/**
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* Access a value object as an array.
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*
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* Returns `NULL` if the value is not an array.
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*/
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yaml_array_t *yaml_value_as_array(const yaml_value_t *);
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/**
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* Return a string describing the most recently encountered error.
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*
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* Returns `NULL` if no error has been encountered.
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*/
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const char *yaml_error(void);
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#endif /* YAML_H */
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#ifdef YAML_IMPLEMENTATION
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char error_message[4096];
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yaml_value_t *yaml_parse(const void *content, size_t length) {
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/* TODO */
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return NULL;
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}
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yaml_value_t *yaml_get(const yaml_value_t *root, const char *path) {
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/* TODO */
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return NULL;
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}
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yaml_string_t *yaml_value_as_string(const yaml_value_t *value) {
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/* TODO */
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return NULL;
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}
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yaml_number_t *yaml_value_as_number(const yaml_value_t *value) {
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/* TODO */
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return NULL;
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}
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yaml_object_t *yaml_object_as_object(const yaml_value_t *value) {
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/* TODO */
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return NULL;
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}
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yaml_array_t *yaml_object_as_array(const yaml_value_t *value) {
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/* TODO */
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return NULL;
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}
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const char *yaml_error(void) {
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if (error_message[0] == '\0') return NULL;
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return error_message;
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}
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#endif /* YAML_IMPLEMENTATION */
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