From: Sebastien Bourdeauducq <sebastien@milkymist.org>
Date: Sat, 10 Nov 2012 11:09:45 +0000 (+0100)
Subject: Revert "pytholite/compiler: SymbolStack"
X-Git-Tag: 24jan2021_ls180~2099^2~803
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a901ef46ab9137317670e9866c09e15baf0c282c;p=litex.git

Revert "pytholite/compiler: SymbolStack"

This reverts commit f57da497b2a96ab53de2fac37a34cdbc668c9636.
---

diff --git a/migen/pytholite/compiler.py b/migen/pytholite/compiler.py
index 28fe19be..14fb248b 100644
--- a/migen/pytholite/compiler.py
+++ b/migen/pytholite/compiler.py
@@ -55,35 +55,13 @@ class _Register:
 		sync = [Case(self.sel, *cases)]
 		return Fragment(sync=sync)
 
-class _SymbolStack:
-	def __init__(self):
-		self.stack = []
-	
-	def push(self, init={}):
-		self.stack.append(init)
-	
-	def pop(self):
-		return self.stack.pop()
-	
-	def __setitem__(self, key, value):
-		self.stack[-1][key] = value
-	
-	def __getitem__(self, key):
-		for frame in reversed(self.stack):
-			try:
-				return frame[key]
-			except KeyError:
-				pass
-		raise KeyError
-		
 class _AbstractNextState:
 	def __init__(self, target_state):
 		self.target_state = target_state
 
 class _Compiler:
 	def __init__(self, symdict, registers):
-		self.symdict = _SymbolStack()
-		self.symdict.push(symdict)
+		self.symdict = symdict
 		self.registers = registers
 		self.targetname = ""