Save up Modula 2

... for when I reduce language in the future. #136

src/code-gen-pool.rb

@@ -37,6 +37,26 @@ class Execline < CodeGen
   Code = %q(%(echo "#{e[PREV]}"))
 end
 
+class Modula2 < CodeGen
+  Name = "Modula-2"
+  File = "QR.mod"
+  Cmd = "gm2 -fiso QR.mod -o QR && ./QR > OUTFILE"
+  Apt = "gm2"
+  def code
+    <<-'END'.lines.map {|l| l.strip }.join
+      "
+        MODULE QR;
+        FROM StrIO IMPORT WriteString;
+        BEGIN #{
+          (PREV).gsub(/()[#{i=94.chr}"]+|[#{i}']+/){
+            ["WriteString(",$&,");"]*($1??":?')
+          }
+        }END QR.
+      "
+    END
+  end
+end
+
 class Pike < CodeGen
   File = "QR.pike"
   Cmd = "pike QR.pike > OUTFILE"