From d5ea77e49e30ad751678f90123f891344642a36c Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Wed, 12 Apr 2017 21:55:26 +0200
Subject: Introduce native boolean type

---
 repl.d | 24 ++++++++++++++----------
 1 file changed, 14 insertions(+), 10 deletions(-)

(limited to 'repl.d')

diff --git a/repl.d b/repl.d
index e3aef2b..b68b46a 100644
--- a/repl.d
+++ b/repl.d
@@ -11,14 +11,17 @@ import src.stack;
 static import definition = src.definition;
 static import primitives = src.primitives.eval;
 
-void process(int x) {
-	try {
-		if ( !primitives.evaluate(x) ) {
-			stack.push(x);
+template process(T)
+if ( is(T == int) || is(T == bool) ) {
+	void process(T value) {
+		try {
+			if ( !primitives.evaluate(value) ) {
+				stack.push(value);
+			}
+		}
+		catch (Exception ex) {
+			writeln("Error: ", ex.msg);
 		}
-	}
-	catch (Exception ex) {
-		writeln("Error: ", ex.msg);
 	}
 }
 
@@ -41,8 +44,9 @@ void process(string word) {
 
 void process(Token token) {
 	token.visit!(
-		(int    x   ) => process(x),
-		(string word) => process(word)
+		(int    value) => process(value),
+		(bool   value) => process(value),
+		(string word ) => process(word)
 	);
 }
 
@@ -50,7 +54,7 @@ void main() {
 	while ( !stdin.eof ) {
 		foreach ( token; stdin.readln.split ) {
 			if ( token.isNumeric ) {
-				immutable int value = parse!int(token);
+				auto value = parse!int(token);
 
 				if ( !definition.handle(value) ) {
 					process(value);
-- 
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