Move top level processing into `machine` module

2 files changed, 56 insertions, 46 deletions

diff --git a/source/app.d b/source/app.d
index 35b2d88..4e7b546 100644
--- a/source/app.d
+++ b/source/app.d
@@ -1,54 +1,12 @@
-import std.stdio;
-import std.string;
-import std.variant;
+import std.string : split;
+import std.stdio  : stdin, readln, writeln;
 
-import std.container.util : make;
-
-import base.stack;
-
-import definition = base.definition;
-import primitives = primitives.eval;
-
-Stack!Token evaluate(Token token) {
-	try {
-		if ( primitives.evaluate(token) ) {
-			return primitives.result;
-		} else {
-			return token.visit!(
-				(int    value) => Stack!Token(Token(value)),
-				(bool   value) => Stack!Token(Token(value)),
-				(string word ) => definition.get(word)
-			);
-		}
-	}
-	catch (Exception ex) {
-		writeln("Error: ", ex.msg);
-		return Stack!Token();
-	}
-}
-
-void process(string value) {
-	auto buffer = make!(Stack!Token)(toToken(value));
-
-	do {
-		Token       current = buffer.pop;
-		Stack!Token result  = evaluate(current);
-
-		if ( !result.empty ) {
-			if ( result.front == current ) {
-				stack.push(current);
-			} else {
-				buffer.push(result);
-			}
-		}
-	}
-	while ( !buffer.empty );
-}
+static import machine;
 
 void main() {
 	while ( !stdin.eof ) {
 		foreach ( token; stdin.readln.split ) {
-			process(token);
+			machine.process(token);
 		}
 	}
 }
diff --git a/source/machine.d b/source/machine.d
new file mode 100644
index 0000000..61d20cb
--- /dev/null
+++ b/source/machine.d
@@ -0,0 +1,52 @@
+module machine;
+
+import std.string;
+import std.variant;
+
+import std.stdio          : writeln;
+import std.container.util : make;
+
+import definition = base.definition;
+import primitives = primitives.eval;
+
+import base.stack;
+
+void process(string value) {
+	auto buffer = make!(Stack!Token)(toToken(value));
+
+	do {
+		Token       current = buffer.pop;
+		Stack!Token result  = evaluate(current);
+
+		if ( !result.empty ) {
+			if ( result.front == current ) {
+				stack.push(current);
+			} else {
+				buffer.push(result);
+			}
+		}
+	}
+	while ( !buffer.empty );
+}
+
+private {
+
+Stack!Token evaluate(Token token) {
+	try {
+		if ( primitives.evaluate(token) ) {
+			return primitives.result;
+		} else {
+			return token.visit!(
+				(int    value) => Stack!Token(Token(value)),
+				(bool   value) => Stack!Token(Token(value)),
+				(string word ) => definition.get(word)
+			);
+		}
+	}
+	catch (Exception ex) {
+		writeln("Error: ", ex.msg);
+		return Stack!Token();
+	}
+}
+
+}