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/*
* blogc: A blog compiler.
* Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
*
* This program can be distributed under the terms of the BSD License.
* See the file LICENSE.
*/
#ifndef _TEMPLATE_PARSER_H
#define _TEMPLATE_PARSER_H
#include <stddef.h>
#include "../common/error.h"
#include "../common/utils.h"
/*
* note: whitespace cleaners are NOT added to AST. we fix strings right during
* template parsing. renderer does not need to care about it, for the sake of
* simplicity.
*
* another note: technically this is not an AST, because it is not a tree. duh!
*/
typedef enum {
BLOGC_TEMPLATE_NODE_IFDEF = 1,
BLOGC_TEMPLATE_NODE_IFNDEF,
BLOGC_TEMPLATE_NODE_IF,
BLOGC_TEMPLATE_NODE_ELSE,
BLOGC_TEMPLATE_NODE_ENDIF,
BLOGC_TEMPLATE_NODE_FOREACH,
BLOGC_TEMPLATE_NODE_ENDFOREACH,
BLOGC_TEMPLATE_NODE_BLOCK,
BLOGC_TEMPLATE_NODE_ENDBLOCK,
BLOGC_TEMPLATE_NODE_VARIABLE,
BLOGC_TEMPLATE_NODE_CONTENT,
} blogc_template_node_type_t;
typedef enum {
BLOGC_TEMPLATE_OP_NEQ = 1 << 0,
BLOGC_TEMPLATE_OP_EQ = 1 << 1,
BLOGC_TEMPLATE_OP_LT = 1 << 2,
BLOGC_TEMPLATE_OP_GT = 1 << 3,
} blogc_template_operator_t;
typedef struct {
blogc_template_node_type_t type;
blogc_template_operator_t op;
// 2 slots to store node data.
char *data[2];
bc_slist_t *childs;
} blogc_template_node_t;
bc_slist_t* blogc_template_parse(const char *src, size_t src_len,
bc_error_t **err);
void blogc_template_free_ast(bc_slist_t *ast);
#endif /* _TEMPLATE_PARSER_H */
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