From 1be774d4845c05bacaecf93eec506ceb038ad8d8 Mon Sep 17 00:00:00 2001
From: Steven Knight <knight@baldmt.com>
Date: Tue, 11 Sep 2001 13:15:57 +0000
Subject: Refactor the Builder binding so the calling Environment gets passed
 in.

---
 src/scons/Builder.py       |  3 ++-
 src/scons/Environment.py   | 19 ++++++++++++++++++-
 src/scons/Node/__init__.py |  3 +++
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/src/scons/Builder.py b/src/scons/Builder.py
index ba489ec..c11c9f3 100644
--- a/src/scons/Builder.py
+++ b/src/scons/Builder.py
@@ -37,9 +37,10 @@ class Builder:
     def __cmp__(self, other):
 	return cmp(self.__dict__, other.__dict__)
 
-    def __call__(self, target = None, source = None):
+    def __call__(self, env, target = None, source = None):
 	node = lookup(self.node_class, target)
 	node.builder_set(self)
+	node.env_set(self)
 	node.sources = source	# XXX REACHING INTO ANOTHER OBJECT
 	return node
 
diff --git a/src/scons/Environment.py b/src/scons/Environment.py
index da71ba1..9b050d1 100644
--- a/src/scons/Environment.py
+++ b/src/scons/Environment.py
@@ -62,8 +62,25 @@ class Environment:
 	    import scons.Defaults
 	    kw['BUILDERS'] = scons.Defaults.Builders[:]
 	self.Dictionary.update(copy.deepcopy(kw))
+
+	class BuilderWrapper:
+	    """Wrapper class that allows an environment to
+	    be associated with a Builder at instantiation.
+	    """
+	    def __init__(self, env, builder):
+		self.env = env
+		self.builder = builder
+	
+	    def __call__(self, target = None, source = None):
+		return self.builder(self.env, target, source)
+
+	    def execute(self, **kw):
+		apply(self.builder.execute, (), kw)
+
 	for b in kw['BUILDERS']:
-	    setattr(self, b.name, b)
+	    setattr(self, b.name, BuilderWrapper(self, b))
+
+
 
     def __cmp__(self, other):
 	return cmp(self.Dictionary, other.Dictionary)
diff --git a/src/scons/Node/__init__.py b/src/scons/Node/__init__.py
index 767f297..e4eb45a 100644
--- a/src/scons/Node/__init__.py
+++ b/src/scons/Node/__init__.py
@@ -17,3 +17,6 @@ class Node:
 
     def builder_set(self, builder):
 	self.builder = builder
+
+    def env_set(self, env):
+	self.env = env
-- 
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