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tokenize_asoft: ignore ' and \n

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This allows including comments in the pre-tokenized code that are left
out in the final version.
This commit is contained in:
Vince Weaver 2016-05-31 12:14:36 -04:00
parent d751608ca9
commit c8aecd86d9
1 changed files with 12 additions and 2 deletions
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14
asoft_basic-utils/tokenize_asoft.c
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@ -12,7 +12,7 @@
/* In memory, applesoft file starts at address $801 */
/* format is <LINE><LINE><LINE>$00$00 */
/* Where <LINE> is: */
/* 2 bytes (little endian) of LINK indicating addy of next line */
/* 2 bytes (little endian) of LINK indicating addy of next line */
/* 2 bytes (little endian) giving the line number */
/* a series of bytes either ASCII or tokens (see below) */
/* a $0 char indicating end of line */
@ -40,7 +40,7 @@ char applesoft_tokens[][8]={
/* F8 */ "","","","","","(","(","("
};
#define LOW(_x) ((_x)&0xff)
#define LOW(_x) ((_x)&0xff)
#define HIGH(_x) (((_x)>>8)&0xff)
#define MAXSIZE 65535
@ -126,6 +126,10 @@ static int find_token(void) {
strlen(applesoft_tokens[i]))) {
/* HACK: special case to avoid AT/ATN problem */
/* Update, apparently actual applesoft uses */
/* a similar hack. Also the 'A TO' */
/* case which we don't handle because */
/* we like sane whitespace. */
if ((i==69) && (line_ptr[2]=='N')) continue;
// fprintf(stderr,
// "Found token %x (%s) %d\n",0x80+i,
@ -172,6 +176,12 @@ int main(int argc, char **argv) {
line++;
if (line_ptr==NULL) break;
/* VMW extension: use leading ' as a comment char */
if (line_ptr[0]=='\'') continue;
/* skip empty lines */
if (line_ptr[0]=='\n') continue;
linenum=getnum();
if ((linenum>65535) || (linenum<0)) {
fprintf(stderr,"Invalid line number %d\n",linenum);