From 0339d3bcf2f371de1a6e4dca680fbfb7d3d3d8f2 Mon Sep 17 00:00:00 2001
From: Jussi Pakkanen <jpakkane@gmail.com>
Date: Sat, 29 Dec 2012 18:18:41 +0200
Subject: [PATCH] Created the executable command.

---
 interpreter.py | 31 ++++++++++++++++++++++++++++---
 1 file changed, 28 insertions(+), 3 deletions(-)

diff --git a/interpreter.py b/interpreter.py
index a558022bf..7c8d1292f 100755
--- a/interpreter.py
+++ b/interpreter.py
@@ -27,6 +27,16 @@ class InvalidCode(InterpreterException):
 class InvalidArguments(InterpreterException):
     pass
 
+class InterpreterObject():
+    pass
+
+class Executable(InterpreterObject):
+    
+    def __init__(self, name, sources):
+        self.name = name
+        self.sources = sources
+
+
 class Interpreter():
     
     def __init__(self, code):
@@ -34,7 +44,8 @@ class Interpreter():
         self.sanity_check_ast()
         self.project = None
         self.compilers = []
-        
+        self.executables = {}
+
     def sanity_check_ast(self):
         if not isinstance(self.ast, nodes.CodeBlock):
             raise InvalidCode('AST is of invalid type. Possibly a bug in the parser.')
@@ -43,7 +54,7 @@ class Interpreter():
         first = self.ast.get_statements()[0]
         if not isinstance(first, nodes.FunctionCall) or first.get_function_name() != 'project':
             raise InvalidCode('First statement must be a call to project')
-    
+
     def run(self):
         i = 0
         statements = self.ast.get_statements()
@@ -54,7 +65,7 @@ class Interpreter():
             else:
                 print("Unknown statement in line %d." % cur.lineno())
             i += 1
-            
+
     def validate_arguments(self, args, argcount, arg_types):
         if argcount is not None:
             if argcount != len(args):
@@ -88,6 +99,17 @@ class Interpreter():
         else:
             raise InvalidCode('Tried to use unknown language "%s".' % lang)
 
+    def func_executable(self, node, args):
+        self.validate_arguments(args, 2, (nodes.StringStatement, nodes.StringStatement))
+        name = args[0].get_string()
+        sources = [args[1].get_string()]
+        if name in self.executables:
+            raise InvalidCode('Line %d, tried to create executable "%s", which already exists.' % (node.lineno(), name))
+        exe = Executable(name, sources)
+        self.executables[name] = exe
+        print('Creating executable %s with file %s' % (name, sources[0]))
+        return exe
+
     def function_call(self, node):
         func_name = node.get_function_name()
         args = node.arguments.arguments
@@ -97,6 +119,8 @@ class Interpreter():
             self.func_message(node, args)
         elif func_name == 'language':
             self.func_language(node, args)
+        elif func_name == 'executable':
+            self.func_executable(node, args)
         else:
             raise InvalidCode('Unknown function "%s".' % func_name)
 
@@ -105,6 +129,7 @@ if __name__ == '__main__':
     message('I can haz text printed out?')
     message('It workses!')
     language('c')
+    executable('prog', 'prog.c')
     """
     i = Interpreter(code)
     i.run()