From 344f26b05f9a04253a6aff18470d068f7521e2ff Mon Sep 17 00:00:00 2001
From: Bob Polis <rpb.polis@avans.nl>
Date: Mon, 7 Sep 2020 18:50:09 +0200
Subject: [PATCH] added 2 code files; added enl instruction; completed main to
 do the right thing

---
 code/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.txt |  4 +++
 code/ninaf-zvabe-fjn-pcc1.txt             | 31 +++++++++++++++++++++++
 code/start.txt                            |  3 ++-
 interpreter.cpp                           |  9 +++++++
 interpreter.hpp                           |  1 +
 main.cpp                                  |  2 +-
 6 files changed, 48 insertions(+), 2 deletions(-)
 create mode 100644 code/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.txt
 create mode 100644 code/ninaf-zvabe-fjn-pcc1.txt

diff --git a/code/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.txt b/code/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.txt
new file mode 100644
index 0000000..fdf08f3
--- /dev/null
+++ b/code/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.txt
@@ -0,0 +1,4 @@
+\avans-minor-swa-cpp1
+rot
+\.txt
+cat
diff --git a/code/ninaf-zvabe-fjn-pcc1.txt b/code/ninaf-zvabe-fjn-pcc1.txt
new file mode 100644
index 0000000..6f57e50
--- /dev/null
+++ b/code/ninaf-zvabe-fjn-pcc1.txt
@@ -0,0 +1,31 @@
+\Erny fghcvqvgl orngf negvsvpvny vagryyvtrapr rirel gvzr.
+rot
+enl
+=quote
+\ !
+0
+1
+slc
+=space
+$space
+=white
+37
+=cnt
+:loop
+$space
+$white
+cat
+=space
+$cnt
+dec
+=cnt
+$cnt
+0
+>loop
+gne
+$quote
+$space
+cat
+\-- Terry Pratchett
+cat
+end
diff --git a/code/start.txt b/code/start.txt
index ab7b36c..50005a2 100644
--- a/code/start.txt
+++ b/code/start.txt
@@ -15,4 +15,5 @@ $ctr
 >loop
 gne
 $result
-end
+\.txt
+cat
diff --git a/interpreter.cpp b/interpreter.cpp
index e57f83f..dd37bff 100644
--- a/interpreter.cpp
+++ b/interpreter.cpp
@@ -119,6 +119,7 @@ void interpreter::exec_instruction(const std::string& code, bool& done) {
     else if (code == "gge") gge();
     else if (code == "fun") fun();
     else if (code == "ret") ret();
+    else if (code == "enl") enl();
     else throw syntax_error {code};
 }
 
@@ -271,6 +272,14 @@ void interpreter::rot() {
     _pc++;
 }
 
+void interpreter::enl() {
+    std::string val {_stack.back()};
+    _stack.pop_back();
+    val += '\n';
+    _stack.push_back(val);
+    _pc++;
+}
+
 // tests & jumps ----------------------------------------------------------
 
 void interpreter::gto() {
diff --git a/interpreter.hpp b/interpreter.hpp
index 3b0ff19..091a1a5 100644
--- a/interpreter.hpp
+++ b/interpreter.hpp
@@ -57,6 +57,7 @@ class interpreter {
         void cat();
         void len();
         void rot();
+        void enl();
 
         // tests & jumps
         void gto();
diff --git a/main.cpp b/main.cpp
index 30a24fa..ce21990 100644
--- a/main.cpp
+++ b/main.cpp
@@ -74,7 +74,7 @@ int main(int argc, const char * argv[]) {
         interpreter proc;
         while (!done) {
             code = req.get(base_url + next_url);
-            std::cerr << code << '\n';
+            // std::cerr << code << '\n';
             std::istringstream in {code};
             next_url = proc.eval(in, done);
             std::cerr << next_url << '\n';