handle basic expression compilation (targeting C)

finch/compiler/cinch.py

@@ -20,5 +20,5 @@ class ArgumentError(Exception):
 tree = parse(tokens)
 # print(tree)
 tree.print()
-
+print(tree.compile())
 

finch/compiler/node.py

@@ -62,16 +62,25 @@ class Int(Literal):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
+    def compile(self):
+        return self[0].content
+
 
 class Float(Literal):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
+    def compile(self):
+        return self[0].content
+
 
 class Tuple(Expression):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
+    def compile(self):
+        return ", ".join(x.compile() for x in self.children)
+
 
 class Array(Expression):
     def __init__(self, *args, **kwargs):
@@ -82,6 +91,9 @@ class Symbol(Expression):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
+    def compile(self):
+        return self[0].content
+
 
 class Operation(Expression):
     def __init__(self, *args, **kwargs):