diff --git a/Compiler.py b/Compiler.py
new file mode 100644
index 0000000..41f809b
--- /dev/null
+++ b/Compiler.py
@@ -0,0 +1,14 @@
+
+from parser.nodes import *
+
+class Compiler(object):
+    def __init__(self):
+        pass
+
+    def compile(self, ast, out):
+        ast.visit(self.first_pass, out)
+
+    def first_pass(self, node, out):
+        if isinstance(node, CExprNode):
+            out.write(node.cstring)
+            out.write('\n')
diff --git a/jtlc b/jtlc
index 0795227..b4964f3 100755
--- a/jtlc
+++ b/jtlc
@@ -7,6 +7,9 @@ import tempfile
 from subprocess import *
 import re
 
+import parser
+from Compiler import Compiler
+
 def main(argv):
     parser = argparse.ArgumentParser(prog = 'jtlc',
             description = "Josh's Toy Language Compiler")
@@ -45,9 +48,15 @@ def main(argv):
     return 0
 
 def build(args, source, dest):
-    dest.write('hi\n')
+    f = open(source, 'r')
+    contents = f.read()
+    f.close()
+    result = parser.parse(contents)
+    c = Compiler()
+    c.compile(result, dest)
 
 def do_compile(args, source_fname, ofname):
+    Popen(['grep', '-n', '.', source_fname]).wait()
     Popen(['gcc', '-o', ofname, '-c', source_fname]).wait()
 
 def do_link(args, ofiles):