int main(int argc, char **argv) {
// 3 compiler flag integers
int l_flag = 0;
int a_flag = 0;
int v_flag = 0;
// Need more than one argument count
if(argc > 1) {
int i;
for(i = 1; i < argc; i++) {
// Set l flag to 1 if "-l"
if(strcmp(argv[i], "-l") == 0) {
l_flag = 1;
}
// Set a flag to 1 if "-a"
else if (strcmp(argv[i], "-a") == 0) {
a_flag = 1;
}
// Set v flag to 1 if "-v"
else if(strcmp(argv[i], "-v") == 0) {
v_flag = 1;
}
// If the compiler directive was not acceptable...
else {
printf("Bad Directives %s\n", argv[i]);
exit(-1);
}
}
}
// Here we run all three files
// If the particular flag was set by the user
// it will print the specified contents of the files
// to the console...
pl0_lex(l_flag);
pl0_parser(a_flag);
pl0_vm(v_flag);
// If no flags were entered then we have a "./compile"
// Call all() to print full output files during the
// compile process
if(l_flag == 0 && a_flag == 0 && v_flag == 0) {
all();
}
}
int main(int argc, char **argv) {
FILE *input_file = NULL;
int l_flag = 0, a_flag = 0, v_flag = 0; // output flags
if(argc > 1) {
int i;
for(i = 1; i < argc; i++) {
// last arg must be the input_file
if((i+1) == argc) {
input_file = fopen(argv[i], "r");
if(!input_file) {
printf("File %s not found.\n", argv[1]);
exit(EXIT_FAILURE);
}
} else {
if(argv[i][0] == '-') {
int j;
for(j = 1; j < strlen(argv[i]); j++) {
if(argv[i][j] == 'l') l_flag = 1;
else if(argv[i][j] == 'a') a_flag = 1;
else if(argv[i][j] == 'v') v_flag = 1;
else {
printf("Unknown option: %s\n", argv[i]);
exit(EXIT_FAILURE);
}
}
}
}
}
} else {
printf("Usage: pl0-compiler [-l] [-a] [-v] /path/to/input_file\n");
exit(EXIT_FAILURE);
}
FILE *lexeme_file = tmpfile();
pl0_lex(input_file, lexeme_file, l_flag);
fclose(input_file);
rewind(lexeme_file);
int error_code = pl0_parse(lexeme_file, a_flag);
fclose(lexeme_file);
if(error_code == 0) {
FILE *code_file = tmpfile();
print_code(code_file);
rewind(code_file);
if(v_flag) {
printf("Running in PM/0\n");
printf("===============\n\n");
}
error_code = pm0(code_file, v_flag);
if(v_flag) {
printf("\n===============\n\n");
}
if(!error_code) {
if(v_flag) {
printf("Finished without error.\n");
}
} else {
printf("Error number %d.\n", error_code);
}
fclose(code_file);
} else {
printf("Error number %d, %s\n", error_code, get_parse_error(error_code));
}
return EXIT_SUCCESS;
}
