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#define _POSIX_C_SOURCE 200809L
#include "module.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* Test host for a verified module: reads commands from stdin and prints one
* JSON snapshot per command. Not a product interface.
* down NAME | up NAME | frame [N] | replace PATH | show */
static const char *const fault_names[] = {"none", "divide", "non_finite", "clamp"};
static bool load(const char *path, PureModule *module) {
FILE *file = fopen(path, "rb");
static unsigned char bytes[1 << 17];
size_t size = file ? fread(bytes, 1, sizeof(bytes), file) : 0;
bool ok = file && !ferror(file) && size < sizeof(bytes);
if (file) fclose(file);
char error[128];
if (!ok) { fprintf(stderr, "cannot read %s\n", path); return false; }
if (pure_module_load(bytes, size, module, error, sizeof(error)) != PURE_OK) {
fprintf(stderr, "%s: %s\n", path, error);
return false;
}
return true;
}
static void show(const PureApp *app, const char *failure) {
const PureModule *m = app->module;
printf("{\"states\":{");
for (uint32_t i = 0; i < m->states; ++i)
printf("%s\"%s\":%.17g", i ? "," : "", m->state_names[i], app->values[i]);
printf("},\"views\":{");
for (uint32_t i = 0; i < m->views; ++i) {
double value;
if (pure_app_view(app, i, &value)) printf("%s\"%s\":%.17g", i ? "," : "", m->view_names[i], value);
else printf("%s\"%s\":null", i ? "," : "", m->view_names[i]);
}
printf("},\"tick\":%llu,\"successfulEvents\":%llu,\"fault\":\"%s\",\"error\":%s%s%s}\n",
(unsigned long long)app->ticks, (unsigned long long)app->events, fault_names[app->fault],
failure ? "\"" : "", failure ? failure : "null", failure ? "\"" : "");
}
int main(int argc, char **argv) {
static PureModule modules[2];
if (argc != 2 || !load(argv[1], &modules[0])) {
if (argc != 2) fputs("pure-run MODULE < commands\n", stderr);
return 2;
}
unsigned active = 0;
PureApp app;
pure_app_start(&app, &modules[active]);
char line[4096];
int status = 0;
while (fgets(line, sizeof(line), stdin)) {
char command[16] = "", argument[4000] = "";
const char *failure = NULL;
line[strcspn(line, "\r\n")] = 0;
if (sscanf(line, "%15s %3999s", command, argument) < 1) continue;
if (!strcmp(command, "down") || !strcmp(command, "up")) {
int input = pure_module_input(app.module, argument);
if (input < 0) failure = "unknown input";
else if (pure_app_input(&app, (uint32_t)input, command[0] == 'd' ? PURE_EDGE_DOWN : PURE_EDGE_UP) != PURE_OK)
failure = "event failed";
} else if (!strcmp(command, "frame")) {
long count = *argument ? strtol(argument, NULL, 10) : 1;
if (count < 1 || count > 600) failure = "frame count";
for (long i = 0; !failure && i < count; ++i)
if (pure_app_frame(&app) != PURE_OK) failure = "event failed";
} else if (!strcmp(command, "replace")) {
if (!load(argument, &modules[!active])) failure = "invalid module";
else { active = !active; pure_app_replace(&app, &modules[active]); }
} else if (strcmp(command, "show")) failure = "unknown command";
if (failure) status = 1;
show(&app, failure);
}
return status;
}
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