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#ifndef ORYX_PARSER_H
#define ORYX_PARSER_H
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include "lexer.h"
enum {
/* Variable declaration, lhs and rhs may be unused
‘x: lhs = rhs’ */
ASTDECL,
/* Constant declaration, lhs and rhs may be unused
‘x: lhs : rhs’ */
ASTCDECL,
/* Function prototype
‘(a: b, c: d) rhs’; aux[lhs].fnproto */
ASTFNPROTO,
/* Function, lhs is the prototype and rhs is the body block */
ASTFN,
/* Braced block, sublist[lhs…rhs] */
ASTBLK,
/* Numeric literal */
ASTNUMLIT,
/* Typename */
ASTTYPE,
/* Return statement, rhs may be unused
‘return rhs’ */
ASTRET,
/* Binary add
‘lhs + rhs’ */
ASTBINADD = '+',
/* Binary sub
‘lhs - rhs’ */
ASTBINSUB = '-',
};
typedef uint8_t ast_kind;
#define AST_SOA_BLKSZ (sizeof(ast_kind) + sizeof(size_t) * 4)
struct ast_soa {
ast_kind *kinds;
size_t *lexemes;
struct {
size_t lhs, rhs;
} *kids;
size_t len, cap;
};
#define ast_free(x) free((x).kinds)
/* Parse the tokens in TOKS into an abstract syntax tree */
struct ast_soa parsetoks(struct lexemes_soa toks);
#endif /* !ORYX_PARSER_H */
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