From d3b74248d53f19bc8f10510d3d44b68aa4883ab6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Benedikt=20B=C3=B6hm?= <bb@xnull.de>
Date: Tue, 9 Jun 2009 08:44:42 +0200
Subject: simplify scope, symbol and types

---
 src/front/scope.py  | 24 +++++-------------------
 src/front/symbol.py | 32 +++-----------------------------
 src/front/type.py   | 12 ++++++++++++
 3 files changed, 20 insertions(+), 48 deletions(-)
 create mode 100644 src/front/type.py

diff --git a/src/front/scope.py b/src/front/scope.py
index 2cc3018..0df8729 100644
--- a/src/front/scope.py
+++ b/src/front/scope.py
@@ -1,20 +1,6 @@
-class Scope(object, DictMixin):
-    def __init__(self, parent):
-        self.parent = parent
-        self.__symbols = {}
+class Scope(object):
+    __shared_state = {}
+    functions = {}
 
-    def __getitem__(self, key):
-        try:
-            return self.__symbols[key]
-        except KeyError:
-            return self.parent[key]
-
-    def __setitem__(self, key, item):
-        self.__symbols[key] = item
-
-    def keys(self):
-        keys = self.__symbols.keys()
-        for key in self.parent.keys():
-            if key not in keys:
-                keys.append(key)
-        return keys
+    def __init__(self):
+        self.__dict__ = self.__shared_state
diff --git a/src/front/symbol.py b/src/front/symbol.py
index 879403f..b93b778 100644
--- a/src/front/symbol.py
+++ b/src/front/symbol.py
@@ -1,34 +1,8 @@
-class SymbolClass(object):
-    def __init__(self, name):
-        self.name = name
-
-    def __str__(self):
-        return self.name
-
-    def __repr__(self):
-        return "<SymbolClass: %s>" % self
-
-SymbolClass.CONST = SymbolClass("CONST")
-SymbolClass.VAR   = SymbolClass("VAR")
-SymbolClass.FUNC  = SymbolClass("FUNC")
-
-class SymbolType(object):
-    def __init__(self, name):
-        self.name = name
-
-    def __str__(self):
-        return self.name
-
-    def __repr__(self):
-        return "<SymbolType: %s>" % self
-
-SymbolType.INT  = SymbolType("INT")
-SymbolType.BOOL = SymbolType("BOOL")
+from type import DataType
 
 class Symbol(object):
-    __slots__ = ['cls', 'type', 'value']
+    __slots__ = ['type', 'value']
 
-    def __init__(self, value, type = SymbolType.INT, cls = SymbolClass.VAR):
+    def __init__(self, value, type = DataType.INT):
         self.value = value
         self.type = type
-        self.cls = cls
diff --git a/src/front/type.py b/src/front/type.py
new file mode 100644
index 0000000..a8bd8c7
--- /dev/null
+++ b/src/front/type.py
@@ -0,0 +1,12 @@
+class DataType(object):
+    def __init__(self, name):
+        self.name = name
+
+    def __str__(self):
+        return self.name
+
+    def __repr__(self):
+        return "<DataType: %s>" % self
+
+DataType.INT  = DataType("INT")
+DataType.BOOL = DataType("BOOL")
-- 
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