+#include <assert.h>
+#include <inttypes.h>
+#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
struct String;
typedef struct String String;
+enum Type;
+typedef enum Type Type;
+union Instance;
+typedef union Instance Instance;
+struct Object;
+typedef struct Object Object;
struct Runtime;
typedef struct Runtime Runtime;
char* characters;
};
+enum Type
+{
+ INTEGER,
+ STRING
+};
+
+union Instance
+{
+ int32_t integer;
+ String* string;
+};
+
+struct Object
+{
+ Type type;
+ Instance instance;
+};
+
struct Runtime
{
size_t permanentStringsLength;
self->permanentStringsLength++;
}
-String* stringLiteral(Runtime* runtime, const char* literal)
+Object integerLiteral(int32_t literal)
{
- String* result = malloc(sizeof(String));
- result->length = strlen(literal);
- result->characters = malloc(result->length);
- memcpy(result->characters, literal, result->length);
- Runtime_addPermanentString(runtime, result);
+ Object result;
+ result.type = INTEGER;
+ result.instance.integer = literal;
return result;
}
+Object stringLiteral(Runtime* runtime, const char* literal)
+{
+ String* resultString = malloc(sizeof(String));
+ resultString->length = strlen(literal);
+ resultString->characters = malloc(resultString->length);
+ memcpy(resultString->characters, literal, resultString->length);
+ Runtime_addPermanentString(runtime, resultString);
+
+ Object result;
+ result.type = STRING;
+ result.instance.string = resultString;
+ return result;
+}
+
+// TODO Make this conditionally added
+Object builtin$negate(Object input)
+{
+ assert(input.type == INTEGER);
+
+ Object result;
+ result.type = INTEGER;
+ result.instance.integer = -input.instance.integer;
+ return result;
+}
+
+Object builtin$add(Object left, Object right)
+{
+ assert(left.type == INTEGER);
+ assert(right.type == INTEGER);
+
+ Object result;
+ result.type = INTEGER;
+ result.instance.integer = left.instance.integer + right.instance.integer;
+ return result;
+}
+
+Object builtin$subtract(Object left, Object right)
+{
+ assert(left.type == INTEGER);
+ assert(right.type == INTEGER);
+
+ Object result;
+ result.type = INTEGER;
+ result.instance.integer = left.instance.integer - right.instance.integer;
+ return result;
+}
+
+Object builtin$multiply(Object left, Object right)
+{
+ assert(left.type == INTEGER);
+ assert(right.type == INTEGER);
+
+ Object result;
+ result.type = INTEGER;
+ result.instance.integer = left.instance.integer * right.instance.integer;
+ return result;
+}
+
+Object builtin$integerDivide(Object left, Object right)
+{
+ assert(left.type == INTEGER);
+ assert(right.type == INTEGER);
+
+ Object result;
+ result.type = INTEGER;
+ result.instance.integer = left.instance.integer / right.instance.integer;
+ return result;
+}
+
+Object builtin$modularDivide(Object left, Object right)
+{
+ assert(left.type == INTEGER);
+ assert(right.type == INTEGER);
+
+ Object result;
+ result.type = INTEGER;
+ result.instance.integer = left.instance.integer % right.instance.integer;
+ return result;
+}
+
+{% if 'pow' in builtins %}
+Object builtin$pow(Object base, Object exponent)
+{
+ assert(base.type == INTEGER);
+ assert(exponent.type == INTEGER);
+
+ Object result;
+ result.type = INTEGER;
+ result.instance.integer = pow(base.instance.integer, exponent.instance.integer);
+ return result;
+}
+{% endif %}
+
{% if 'print' in builtins %}
-void builtin$print(String* output)
+void builtin$print(Object output)
{
- // Using fwrite instead of printf to handle size_t length
- fwrite(output->characters, 1, output->length, stdout);
+ switch(output.type)
+ {
+ case INTEGER:
+ printf("%" PRId32, output.instance.integer);
+ break;
+
+ case STRING:
+ // Using fwrite instead of printf to handle size_t length
+ fwrite(output.instance.string->characters, 1, output.instance.string->length, stdout);
+ break;
+
+ default:
+ assert(false);
+ }
}
{% endif %}