1 files changed, 69 insertions, 0 deletions
diff --git a/src/primitives.d b/src/primitives.d
new file mode 100644
index 0000000..0be6836
--- /dev/null
+++ b/src/primitives.d
@@ -0,0 +1,69 @@
+module src.primitives;
+
+import std.stdio;
+
+import src.stack;
+import src.definition;
+
+int[string] variables;
+
+bool evaluate(string word) {
+	switch ( word ) {
+		case "§":
+			src.definition.start;
+			return true;
+		case "$":
+			string name  = stack.pop.get!string;
+			int    value = stack.pop.get!int;
+
+			variables[name] = value;
+			return true;
+		case "@":
+			string name = stack.pop.get!string;
+
+			if ( name in variables ) {
+				stack.push(variables[name]);
+			}
+			return true;
+		case "+":
+			int b = stack.pop.get!int;
+			int a = stack.pop.get!int;
+
+			stack.push(a + b);
+			return true;
+		case "*":
+			int b = stack.pop.get!int;
+			int a = stack.pop.get!int;
+
+			stack.push(a * b);
+			return true;
+		case "/":
+			int b = stack.pop.get!int;
+			int a = stack.pop.get!int;
+
+			if ( b == 0 ) {
+				throw new Exception("division by 0 undefined");
+			} else {
+				stack.push(a / b);
+			}
+			return true;
+		case "%":
+			int b = stack.pop.get!int;
+			int a = stack.pop.get!int;
+
+			if ( b == 0 ) {
+				throw new Exception("modulo 0 undefined");
+			} else {
+				stack.push(a % b);
+			}
+			return true;
+		case ".":
+			stack.pop;
+			return true;
+		case "'":
+			writeln(stack.top);
+			return true;
+		default:
+			return false;
+	}
+}