bitbake: data/codeparser: Improve handling of contains functions
One of the current frustrations with the sstate checksums is that code like base_contains('X', 'y',...) adds a full dependency on X and varies depend even on whitespace changes in X. This patch adds special handling of the contains functions to expand the first parameter and check for the flag specified by the second parameter (assuming its a string). The result is then appended to the value of the variable with a "Set" or "Unset" status. If the flag is added/removed, the stored variable value changes and hence the checksum changes. No dependency on X is added so it is free to change with regard to other flags or whitespace. This code is far from ideal, ideally we'd have properly typed variables however it fixes a major annoyance of the current checksums and is of enough value its worth adding in a stopgap solution. It shouldn't significantly restrict any propely typed variable implementation in future. (Bitbake rev: ed2d0a22a80299de0cfd377999950cf4b26c512e) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> Signed-off-by: Christopher Larson <chris_larson@mentor.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -1,6 +1,7 @@
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import ast
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import codegen
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import logging
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import collections
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import os.path
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import bb.utils, bb.data
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from itertools import chain
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@ -35,7 +36,7 @@ def check_indent(codestr):
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class CodeParserCache(MultiProcessCache):
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cache_file_name = "bb_codeparser.dat"
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CACHE_VERSION = 3
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CACHE_VERSION = 4
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def __init__(self):
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MultiProcessCache.__init__(self)
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@ -122,7 +123,11 @@ class PythonParser():
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name = self.called_node_name(node.func)
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if name in self.getvars or name in self.containsfuncs:
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if isinstance(node.args[0], ast.Str):
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self.references.add(node.args[0].s)
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varname = node.args[0].s
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if name in self.containsfuncs and isinstance(node.args[1], ast.Str):
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self.contains[varname].add(node.args[1].s)
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else:
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self.references.add(node.args[0].s)
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else:
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self.warn(node.func, node.args[0])
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elif name in self.execfuncs:
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@ -148,6 +153,7 @@ class PythonParser():
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def __init__(self, name, log):
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self.var_execs = set()
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self.contains = collections.defaultdict(set)
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self.execs = set()
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self.references = set()
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self.log = BufferedLogger('BitBake.Data.%s' % name, logging.DEBUG, log)
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@ -161,14 +167,15 @@ class PythonParser():
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if h in codeparsercache.pythoncache:
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self.references = codeparsercache.pythoncache[h]["refs"]
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self.execs = codeparsercache.pythoncache[h]["execs"]
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self.contains = codeparsercache.pythoncache[h]["contains"]
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return
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if h in codeparsercache.pythoncacheextras:
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self.references = codeparsercache.pythoncacheextras[h]["refs"]
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self.execs = codeparsercache.pythoncacheextras[h]["execs"]
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self.contains = codeparsercache.pythoncacheextras[h]["contains"]
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return
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code = compile(check_indent(str(node)), "<string>", "exec",
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ast.PyCF_ONLY_AST)
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@ -181,6 +188,7 @@ class PythonParser():
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codeparsercache.pythoncacheextras[h] = {}
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codeparsercache.pythoncacheextras[h]["refs"] = self.references
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codeparsercache.pythoncacheextras[h]["execs"] = self.execs
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codeparsercache.pythoncacheextras[h]["contains"] = self.contains
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class ShellParser():
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def __init__(self, name, log):
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@ -299,6 +299,21 @@ def build_dependencies(key, keys, shelldeps, varflagsexcl, d):
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vardeps = varflags.get("vardeps")
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value = d.getVar(key, False)
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def handle_contains(value, contains, d):
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newvalue = ""
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for k in contains:
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l = (d.getVar(k, True) or "").split()
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for word in contains[k]:
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if word in l:
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newvalue += "\n%s{%s} = Set" % (k, word)
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else:
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newvalue += "\n%s{%s} = Unset" % (k, word)
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if not newvalue:
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return value
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if not value:
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return newvalue
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return value + newvalue
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if "vardepvalue" in varflags:
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value = varflags.get("vardepvalue")
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elif varflags.get("func"):
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@ -309,6 +324,7 @@ def build_dependencies(key, keys, shelldeps, varflagsexcl, d):
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logger.warn("Variable %s contains tabs, please remove these (%s)" % (key, d.getVar("FILE", True)))
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parser.parse_python(parsedvar.value)
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deps = deps | parser.references
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value = handle_contains(value, parser.contains, d)
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else:
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parsedvar = d.expandWithRefs(value, key)
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parser = bb.codeparser.ShellParser(key, logger)
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@ -318,10 +334,12 @@ def build_dependencies(key, keys, shelldeps, varflagsexcl, d):
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parser.log.flush()
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deps = deps | parsedvar.references
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deps = deps | (keys & parser.execs) | (keys & parsedvar.execs)
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value = handle_contains(value, parsedvar.contains, d)
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else:
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parser = d.expandWithRefs(value, key)
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deps |= parser.references
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deps = deps | (keys & parser.execs)
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value = handle_contains(value, parser.contains, d)
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# Add varflags, assuming an exclusion list is set
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if varflagsexcl:
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@ -35,6 +35,7 @@ import hashlib
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import bb, bb.codeparser
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from bb import utils
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from bb.COW import COWDictBase
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import collections
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logger = logging.getLogger("BitBake.Data")
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@ -88,6 +89,7 @@ class VariableParse:
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self.references = set()
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self.execs = set()
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self.contains = collections.defaultdict(set)
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def var_sub(self, match):
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key = match.group()[2:-1]
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@ -120,6 +122,8 @@ class VariableParse:
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self.references |= parser.references
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self.execs |= parser.execs
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for k in parser.contains:
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self.contains[k].update(parser.contains[k])
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value = utils.better_eval(codeobj, DataContext(self.d))
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return str(value)
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