jack-compiler/parser/parser-util.c

#include <stdlib.h>
#include "parser-util.h"
#include "util.h"

const char* tokentypesarr[] = { "keyword", "identifier", "symbol",
      			 	"integerConstant", "stringConstant" };
mkstrlist(tokentypes, tokentypesarr);

void unexpected(PARSER* p) {
	eprintf("Unexpected token '%s' (of type %s); line %i, file '%s'\n",
		       	p->current->token, tokentypes.items[p->current->type],
		       	p->current->definedat, p->file);
	exit(1);
}

void checktype(PARSER* p, TOKENTYPE type) {
	if(p->current->type != type) {
		eprintf("Unexpected %s; file '%s', line %i\n", 
				tokentypes.items[p->current->type], p->file,
			       	p->current->definedat);
		exit(1);
	}
}

void checkcontent(PARSER* p, const char* content) {
	if(differs(p, content))
		unexpected(p);
	next(p);
}

char* parseidentifier(PARSER* p) {
	checktype(p, identifier);
	char* result = p->current->token;
	next(p);
	return result;
}

DEBUGINFO* getdebug(PARSER* p) {
	DEBUGINFO* d = (DEBUGINFO*)malloc(sizeof(DEBUGINFO));
	d->file = p->file;
	d->definedat = p->current->definedat;
	return d;
}