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author | Holger Freyther <ich@tamarin.(none)> | 2009-05-18 19:50:14 +0200 |
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committer | Richard Purdie <rpurdie@linux.intel.com> | 2010-02-15 17:07:07 +0000 |
commit | 71a19386a36931c2e8cd882bb19c33ace60e4398 (patch) | |
tree | ec045a41543026d1cb8bf7cb94b29ceedea11be7 /bitbake/lib | |
parent | df8f7706a6c22863f2c3a51e1a788c5d676fd8b3 (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/lib')
-rw-r--r-- | bitbake/lib/bb/parse/ast.py | 78 |
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) |