shithub: scc

ref: aea5de4f99d00f5ca4c7f7503be3208f9666e623
dir: /symbol.h/

#pragma once
#ifndef SYMBOL_H
#define SYMBOL_H

struct type;

struct symbol {
	struct type *type;
	union {
		struct {
			char *str;
			union {
				unsigned char level;/* used in usual symbols */
				unsigned char tok;  /* used in keywords */
			};
		};
		short val;	/* used in integer constant */
	};
	struct symbol *next;
	struct symbol *h_next, *h_prev;
};

struct symctx {
	struct symbol *iden;
	struct symctx *next;
};

extern void new_ctx(struct symctx *ctx);
extern void del_ctx(void);
extern struct symbol *install(const char *s, unsigned char key);
extern struct symbol *lookup(char *s, unsigned char key);
extern unsigned char hashfun(register const char *s);

#endif