Parcel/core-parser/inc/ast.h

98 lines
2.4 KiB
C

#ifndef PARCEL_AST_H
#define PARCEL_AST_H
#include <utility.h>
#include <logger.h>
#include <tokenizer.h>
typedef struct pac_ast pac_ast_s;
typedef struct pac_ast_rule pac_ast_rule_s;
typedef struct pac_ast_variant pac_ast_variant_s;
typedef struct pac_ast_literal pac_ast_literal_s;
typedef struct pac_ast_reference pac_ast_reference_s;
typedef struct pac_ast_item pac_ast_item_s;
struct pac_ast
{
usz_t num_rules;
pac_ast_rule_s *rules;
};
struct pac_ast_rule
{
char *name;
usz_t num_variants;
pac_ast_variant_s *variants;
};
struct pac_ast_variant
{
usz_t num_items;
pac_ast_item_s *items;
};
// pac_ast_reference: Also called non-terminal, a reference is an item
// which represents all the contents of another rule.
struct pac_ast_reference
{
usz_t len_name;
char *name;
};
struct pac_ast_literal
{
usz_t length;
char *string;
};
// pac_ast_set_e: An enumeration of all sets known in Parcel's AST.
//
// Sets are descriptions which describe a rough format of token, like
// with variable names; the format is known, but the actual name isn't.
typedef enum
{
PAC_AST_SET_RUNE,
PAC_AST_SET_WORD,
PAC_AST_SET_INTEGER,
PAC_AST_SET_FLOAT
} pac_ast_set_e;
typedef enum
{
PAC_AST_ITEM_INVALID = 0x00,
PAC_AST_ITEM_REFERENCE,
PAC_AST_ITEM_LITERAL,
PAC_AST_ITEM_SET
} pac_ast_item_e;
struct pac_ast_item
{
pac_ast_item_e type;
union pac_ast_item_data
{
pac_ast_literal_s literal;
pac_ast_set_e set;
pac_ast_reference_s reference;
} data;
};
typedef struct pac_ast_grower
{
pac_tlist_s *token_list;
pac_logger_s logger;
bool_t failed;
} pac_ast_grower_s;
pac_ast_s pac_grow_ast (pac_tlist_s tokens);
bool_t pac_ast_handle_invalid_reference_name_token (pac_ast_grower_s *grower);
bool_t pac_ast_handle_missing_reference_close_tag (pac_ast_grower_s *grower);
bool_t pac_ast_handle_reference_with_equals_sign (pac_ast_grower_s *grower);
#endif // PARCEL_AST_H