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authorHolger Freyther <ich@tamarin.(none)>2009-05-18 19:50:14 +0200
committerRichard Purdie <rpurdie@linux.intel.com>2010-02-15 17:07:07 +0000
commit71a19386a36931c2e8cd882bb19c33ace60e4398 (patch)
treeec045a41543026d1cb8bf7cb94b29ceedea11be7 /bitbake
parentdf8f7706a6c22863f2c3a51e1a788c5d676fd8b3 (diff)
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bitbake: [parser] Firs set of AST nodes with construction and eval
First set of ConfHandling with AST nodes. The include can use a speed up and things might need to be migrated... into this class. Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'bitbake')
-rw-r--r--bitbake/lib/bb/parse/ast.py78
1 files changed, 78 insertions, 0 deletions
diff --git a/bitbake/lib/bb/parse/ast.py b/bitbake/lib/bb/parse/ast.py
index f21b0aeb4..b6dadd1e2 100644
--- a/bitbake/lib/bb/parse/ast.py
+++ b/bitbake/lib/bb/parse/ast.py
@@ -30,13 +30,85 @@ class StatementGroup:
def __init__(self):
self.statements = []
+ def append(self, statement):
+ self.statements.append(statement)
+
def eval(self, data):
"""
Apply each statement on the data... in order
"""
map(lambda x: x.eval(data), self.statements)
+class IncludeNode:
+ def __init__(self, what_file, fn, lineno):
+ self.what_file = what_file
+ self.from_fn = fn
+ self.from_lineno = lineno
+
+ def eval(self, data):
+ """
+ Include the file and evaluate the statements
+ """
+ s = bb.data.expand(self.what_file, data)
+ bb.msg.debug(3, bb.msg.domain.Parsing, "CONF %s:%d: including %s" % (self.from_fn, self.from_lineno, s))
+
+ # TODO: Cache those includes...
+ statements = StatementGroup()
+ bb.parse.ConfHandler.include(statements, self.from_fn, s, data, False)
+ statements.eval(data)
+
+class ExportNode:
+ def __init__(self, var):
+ self.var = var
+
+ def eval(self, data):
+ bb.data.setVarFlag(self.var, "export", 1, data)
+
+class DataNode:
+ """
+ Various data related updates. For the sake of sanity
+ we have one class doing all this. This means that all
+ this need to be re-evaluated... we might be able to do
+ that faster with multiple classes.
+ """
+ def __init__(self, groupd):
+ self.groupd = groupd
+
+ def eval(self, data):
+ groupd = self.groupd
+ key = groupd["var"]
+ if "exp" in groupd and groupd["exp"] != None:
+ bb.data.setVarFlag(key, "export", 1, data)
+ if "ques" in groupd and groupd["ques"] != None:
+ val = getFunc(groupd, key, data)
+ if val == None:
+ val = groupd["value"]
+ elif "colon" in groupd and groupd["colon"] != None:
+ e = data.createCopy()
+ bb.data.update_data(e)
+ val = bb.data.expand(groupd["value"], e)
+ elif "append" in groupd and groupd["append"] != None:
+ val = "%s %s" % ((getFunc(groupd, key, data) or ""), groupd["value"])
+ elif "prepend" in groupd and groupd["prepend"] != None:
+ val = "%s %s" % (groupd["value"], (getFunc(groupd, key, data) or ""))
+ elif "postdot" in groupd and groupd["postdot"] != None:
+ val = "%s%s" % ((getFunc(groupd, key, data) or ""), groupd["value"])
+ elif "predot" in groupd and groupd["predot"] != None:
+ val = "%s%s" % (groupd["value"], (getFunc(groupd, key, data) or ""))
+ else:
+ val = groupd["value"]
+ if 'flag' in groupd and groupd['flag'] != None:
+ bb.msg.debug(3, bb.msg.domain.Parsing, "setVarFlag(%s, %s, %s, data)" % (key, groupd['flag'], val))
+ bb.data.setVarFlag(key, groupd['flag'], val, data)
+ else:
+ bb.data.setVar(key, val, data)
+
+
+
def handleInclude(statements, m, fn, lineno, data, force):
+ # AST handling
+ statements.append(IncludeNode(m.group(1), fn, lineno))
+
s = bb.data.expand(m.group(1), data)
bb.msg.debug(3, bb.msg.domain.Parsing, "CONF %s:%d: including %s" % (fn, lineno, s))
if force:
@@ -45,9 +117,15 @@ def handleInclude(statements, m, fn, lineno, data, force):
bb.parse.ConfHandler.include(statements, fn, s, data, False)
def handleExport(statements, m, data):
+ # AST handling
+ statements.append(ExportNode(m.group(1)))
+
bb.data.setVarFlag(m.group(1), "export", 1, data)
def handleData(statements, groupd, data):
+ # AST handling
+ statements.append(DataNode(groupd))
+
key = groupd["var"]
if "exp" in groupd and groupd["exp"] != None:
bb.data.setVarFlag(key, "export", 1, data)