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Simplify main interpreter

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No need to interpret "multiple files in sequence".  Just execute the
one file given.
This commit is contained in:
Aryadev Chavali
2024-12-03 03:19:29 +00:00
parent d230dbb679
commit 14ee1d3f02
1 changed files with 56 additions and 61 deletions
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117
main.c
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@@ -74,8 +74,8 @@ void interpret(machine_t *cpu, node_t *ast, size_t num)
void usage(const char *name, FILE *fp) void usage(const char *name, FILE *fp)
{ {
fprintf(fp, fprintf(fp,
"Usage: %s [FILE]...\n\tExecutes FILES sequentially on the " "Usage: %s [FILE]...\n\tInterprets FILE as a brainfuck program"
"same machine\n", "\n",
name); name);
} }
@@ -87,70 +87,65 @@ int main(int argc, char *argv[])
return 1; return 1;
} }
char *filepath = NULL, *file_data = NULL; int ret = 0;
char *filepath = argv[1], *file_data = NULL;
buffer_t *buffer = NULL; buffer_t *buffer = NULL;
struct PResult res = {0}; struct PResult res = {0};
machine_t machine = {0};
machine_t machine = {0}; FILE *handle = fopen(filepath, "r");
#ifdef DEBUG
for (int i = 1; i < argc; ++i) printf("[DEBUG]: Attempting to open file handle to %s\n", filepath);
#endif
if (!handle)
{ {
filepath = argv[i]; fprintf(stderr, "ERROR: Could not open \"%s\"\n", filepath);
ret = 1;
FILE *handle = fopen(filepath, "r"); goto end;
#ifdef DEBUG
printf("[DEBUG]: Attempting to open file handle to %s\n", filepath);
#endif
if (!handle)
{
fprintf(stderr, "ERROR: Could not open \"%s\"\n", filepath);
goto error;
}
file_data = fread_all(handle);
fclose(handle);
#ifdef DEBUG
printf("[DEBUG]: Read data from file %s\n", filepath);
#endif
buffer = buffer_init_str(filepath, file_data, strlen(file_data));
#ifdef DEBUG
puts("[DEBUG]: Initialised buffer");
#endif
res = parse_buffer(buffer);
if (res.nodes == NULL)
{
fputs("Exiting early...\n", stderr);
goto error;
}
#ifdef DEBUG
char *str = ast_to_str(res.nodes, res.size);
printf("[DEBUG]: Parsed buffer (%lu nodes parsed)\n\t[DEBUG]: Out=%s\n",
res.size, str);
free(str);
#endif
interpret(&machine, res.nodes, res.size);
#ifdef DEBUG
printf("[DEBUG]: Finished interpreting, memory:");
for (size_t i = 0; i < machine.dp_max; ++i)
{
if (i % 8 == 0)
printf("\n\t");
printf("%d ", machine.memory[i]);
}
#endif
free(res.nodes);
free(buffer);
free(file_data);
} }
return 0; file_data = fread_all(handle);
error: fclose(handle);
if (buffer) #ifdef DEBUG
free(buffer); printf("[DEBUG]: Read data from file %s\n", filepath);
#endif
buffer = buffer_init_str(filepath, file_data, strlen(file_data));
#ifdef DEBUG
puts("[DEBUG]: Initialised buffer");
#endif
res = parse_buffer(buffer);
if (res.nodes == NULL)
{
fputs("Exiting early...\n", stderr);
ret = 1;
goto end;
}
#ifdef DEBUG
char *str = ast_to_str(res.nodes, res.size);
printf("[DEBUG]: Parsed buffer (%lu nodes parsed)\n\t[DEBUG]: Out=%s\n",
res.size, str);
free(str);
#endif
interpret(&machine, res.nodes, res.size);
#ifdef DEBUG
printf("[DEBUG]: Finished interpreting, memory:");
for (size_t i = 0; i < machine.dp_max; ++i)
{
if (i % 8 == 0)
printf("\n\t");
printf("%d ", machine.memory[i]);
}
printf("\n");
#endif
end:
if (res.nodes) if (res.nodes)
free(res.nodes); free(res.nodes);
return 1; if (buffer)
free(buffer);
if (file_data)
free(file_data);
return ret;
} }