Initial commit

main.c

@@ -0,0 +1,86 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "common.h"
+#include "chunk.h"
+#include "debug.h"
+#include "vm.h"
+
+static void repl()
+{
+    char line[1024];
+    for (;;) {
+        printf("> ");
+        if (!fgets(line, sizeof(line), stdin)) {
+            printf("\n");
+            break;
+        }
+
+        interpret(line);
+    }
+}
+
+static char* readFile(const char* path)
+{
+    FILE* file = fopen(path, "rb");
+    if (file == nullptr) {
+        fprintf(stderr, "Could not open file \"%s\".\n", path);
+        exit(74);
+    }
+
+    fseek(file, 0L, SEEK_END);
+    auto fileSize = ftell(file);
+    if (fileSize < 0) {
+        fprintf(stderr, "Could not tell file size.");
+        exit(74);
+    }
+    rewind(file);
+
+    char* buffer = (char*)malloc(fileSize + 1);
+    if (buffer == nullptr) {
+        fprintf(stderr, "Not enough memory to read \"%s\".\n", path);
+        exit(74);
+    }
+    auto bytesRead = fread(buffer, sizeof(char), fileSize, file);
+    if (bytesRead < (size_t)fileSize) {
+        fprintf(stderr, "Could not read file \"%s\".\n", path);
+        exit(74);
+    }
+
+    fclose(file);
+    return buffer;
+}
+
+static void runFile(const char* path)
+{
+    char* source = readFile(path);
+    auto result = interpret(source);
+    free(source);
+
+    if (result == INTERPRET_COMPILE_ERROR) {
+        exit(65);
+    }
+    if (result == INTERPRET_RUNTIME_ERROR) {
+        exit(70);
+    }
+}
+
+int main(int argc, const char* argv[])
+{
+    initVM();
+
+    if (argc == 1) {
+        repl();
+    } else if (argc == 2) {
+        runFile(argv[1]);
+    } else {
+        fprintf(stderr, "Usage: %s [path]\n", argv[0]);
+        exit(64);
+    }
+
+    freeVM();
+
+    return 0;
+}
+