bool Assembler::Assemble(const char *filename, Assembly& assembly)
{
assembly.Clear();
LabelVector labels;
FILE *in = fopen(filename, "rt");
if(in == null) return false;
char buffer[256];
int linecount = 0;
while(fgets(buffer, sizeof(buffer), in)) {
size_t lc = strlen(buffer) - 1;
if(buffer[lc] == '\n') buffer[lc] = '\0';
string line(buffer);
if(ParseLine(line, linecount, assembly, labels) == false) {
printf("Syntax error on line %d: \"%s\"\n", linecount + 1, buffer);
fclose(in);
return false;
}
linecount ++;
}
fclose(in);
// replace label indices with code positions
return SetLabels(assembly, labels);
}
