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authorKenneth Heafield <github@kheafield.com>2012-10-22 12:07:20 +0100
committerKenneth Heafield <github@kheafield.com>2012-10-22 12:07:20 +0100
commit5f98fe5c4f2a2090eeb9d30c030305a70a8347d1 (patch)
tree9b6002f850e6dea1e3400c6b19bb31a9cdf3067f /jam-files/boost-build/build/feature.py
parentcf9994131993b40be62e90e213b1e11e6b550143 (diff)
parent21825a09d97c2e0afd20512f306fb25fed55e529 (diff)
Merge remote branch 'upstream/master'
Conflicts: Jamroot bjam decoder/Jamfile decoder/cdec.cc dpmert/Jamfile jam-files/sanity.jam klm/lm/Jamfile klm/util/Jamfile mira/Jamfile
Diffstat (limited to 'jam-files/boost-build/build/feature.py')
-rw-r--r--jam-files/boost-build/build/feature.py905
1 files changed, 0 insertions, 905 deletions
diff --git a/jam-files/boost-build/build/feature.py b/jam-files/boost-build/build/feature.py
deleted file mode 100644
index 315a18e9..00000000
--- a/jam-files/boost-build/build/feature.py
+++ /dev/null
@@ -1,905 +0,0 @@
-# Status: ported, except for unit tests.
-# Base revision: 64488
-#
-# Copyright 2001, 2002, 2003 Dave Abrahams
-# Copyright 2002, 2006 Rene Rivera
-# Copyright 2002, 2003, 2004, 2005, 2006 Vladimir Prus
-# Distributed under the Boost Software License, Version 1.0.
-# (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
-
-import re
-
-from b2.util import utility, bjam_signature
-import b2.util.set
-from b2.util.utility import add_grist, get_grist, ungrist, replace_grist, to_seq
-from b2.exceptions import *
-
-__re_split_subfeatures = re.compile ('<(.*):(.*)>')
-__re_no_hyphen = re.compile ('^([^:]+)$')
-__re_slash_or_backslash = re.compile (r'[\\/]')
-
-class Feature(object):
-
- # Map from string attribute names to integers bit flags.
- # This will be initialized after declaration of the class.
- _attribute_name_to_integer = {}
-
- def __init__(self, name, values, attributes):
- self._name = name
- self._values = values
- self._default = None
- self._attributes = 0
- for a in attributes:
- self._attributes = self._attributes | Feature._attribute_name_to_integer[a]
- self._attributes_string_list = attributes
- self._subfeatures = []
- self._parent = None
-
- def name(self):
- return self._name
-
- def values(self):
- return self._values
-
- def add_values(self, values):
- self._values.extend(values)
-
- def attributes(self):
- return self._attributes
-
- def set_default(self, value):
- self._default = value
-
- def default(self):
- return self._default
-
- # FIXME: remove when we fully move to using classes for features/properties
- def attributes_string_list(self):
- return self._attributes_string_list
-
- def subfeatures(self):
- return self._subfeatures
-
- def add_subfeature(self, name):
- self._subfeatures.append(name)
-
- def parent(self):
- """For subfeatures, return pair of (parent_feature, value).
-
- Value may be None if this subfeature is not specific to any
- value of the parent feature.
- """
- return self._parent
-
- def set_parent(self, feature, value):
- self._parent = (feature, value)
-
- def __str__(self):
- return self._name
-
-
-def reset ():
- """ Clear the module state. This is mainly for testing purposes.
- """
- global __all_attributes, __all_features, __implicit_features, __composite_properties
- global __features_with_attributes, __subfeature_from_value, __all_top_features, __free_features
- global __all_subfeatures
-
- # The list with all attribute names.
- __all_attributes = [ 'implicit',
- 'composite',
- 'optional',
- 'symmetric',
- 'free',
- 'incidental',
- 'path',
- 'dependency',
- 'propagated',
- 'link-incompatible',
- 'subfeature',
- 'order-sensitive'
- ]
- i = 1
- for a in __all_attributes:
- setattr(Feature, a.upper(), i)
- Feature._attribute_name_to_integer[a] = i
- def probe(self, flag=i):
- return getattr(self, "_attributes") & flag
- setattr(Feature, a.replace("-", "_"), probe)
- i = i << 1
-
- # A map containing all features. The key is the feature name.
- # The value is an instance of Feature class.
- __all_features = {}
-
- # All non-subfeatures.
- __all_top_features = []
-
- # Maps valus to the corresponding implicit feature
- __implicit_features = {}
-
- # A map containing all composite properties. The key is a Property instance,
- # and the value is a list of Property instances
- __composite_properties = {}
-
- __features_with_attributes = {}
- for attribute in __all_attributes:
- __features_with_attributes [attribute] = []
-
- # Maps a value to the corresponding subfeature name.
- __subfeature_from_value = {}
-
- # All free features
- __free_features = []
-
- __all_subfeatures = []
-
-reset ()
-
-def enumerate ():
- """ Returns an iterator to the features map.
- """
- return __all_features.iteritems ()
-
-def get(name):
- """Return the Feature instance for the specified name.
-
- Throws if no feature by such name exists
- """
- return __all_features[name]
-
-# FIXME: prepare-test/finish-test?
-
-@bjam_signature((["name"], ["values", "*"], ["attributes", "*"]))
-def feature (name, values, attributes = []):
- """ Declares a new feature with the given name, values, and attributes.
- name: the feature name
- values: a sequence of the allowable values - may be extended later with feature.extend
- attributes: a sequence of the feature's attributes (e.g. implicit, free, propagated, ...)
- """
- __validate_feature_attributes (name, attributes)
-
- feature = Feature(name, [], attributes)
- __all_features[name] = feature
- # Temporary measure while we have not fully moved from 'gristed strings'
- __all_features["<" + name + ">"] = feature
-
- for attribute in attributes:
- __features_with_attributes [attribute].append (name)
-
- name = add_grist(name)
-
- if 'subfeature' in attributes:
- __all_subfeatures.append(name)
- else:
- __all_top_features.append(feature)
-
- extend (name, values)
-
- # FIXME: why his is needed.
- if 'free' in attributes:
- __free_features.append (name)
-
- return feature
-
-@bjam_signature((["feature"], ["value"]))
-def set_default (feature, value):
- """ Sets the default value of the given feature, overriding any previous default.
- feature: the name of the feature
- value: the default value to assign
- """
- f = __all_features[feature]
- attributes = f.attributes()
- bad_attribute = None
-
- if attributes & Feature.FREE:
- bad_attribute = "free"
- elif attributes & Feature.OPTIONAL:
- bad_attribute = "optional"
-
- if bad_attribute:
- raise InvalidValue ("%s property %s cannot have a default" % (bad_attribute, feature.name()))
-
- if not value in f.values():
- raise InvalidValue ("The specified default value, '%s' is invalid.\n" % value + "allowed values are: %s" % values)
-
- f.set_default(value)
-
-def defaults(features):
- """ Returns the default property values for the given features.
- """
- # FIXME: should merge feature and property modules.
- import property
-
- result = []
- for f in features:
- if not f.free() and not f.optional() and f.default():
- result.append(property.Property(f, f.default()))
-
- return result
-
-def valid (names):
- """ Returns true iff all elements of names are valid features.
- """
- def valid_one (name): return __all_features.has_key (name)
-
- if isinstance (names, str):
- return valid_one (names)
- else:
- return [ valid_one (name) for name in names ]
-
-def attributes (feature):
- """ Returns the attributes of the given feature.
- """
- return __all_features[feature].attributes_string_list()
-
-def values (feature):
- """ Return the values of the given feature.
- """
- validate_feature (feature)
- return __all_features[feature].values()
-
-def is_implicit_value (value_string):
- """ Returns true iff 'value_string' is a value_string
- of an implicit feature.
- """
-
- if __implicit_features.has_key(value_string):
- return __implicit_features[value_string]
-
- v = value_string.split('-')
-
- if not __implicit_features.has_key(v[0]):
- return False
-
- feature = __implicit_features[v[0]]
-
- for subvalue in (v[1:]):
- if not __find_implied_subfeature(feature, subvalue, v[0]):
- return False
-
- return True
-
-def implied_feature (implicit_value):
- """ Returns the implicit feature associated with the given implicit value.
- """
- components = implicit_value.split('-')
-
- if not __implicit_features.has_key(components[0]):
- raise InvalidValue ("'%s' is not a value of an implicit feature" % implicit_value)
-
- return __implicit_features[components[0]]
-
-def __find_implied_subfeature (feature, subvalue, value_string):
-
- #if value_string == None: value_string = ''
-
- if not __subfeature_from_value.has_key(feature) \
- or not __subfeature_from_value[feature].has_key(value_string) \
- or not __subfeature_from_value[feature][value_string].has_key (subvalue):
- return None
-
- return __subfeature_from_value[feature][value_string][subvalue]
-
-# Given a feature and a value of one of its subfeatures, find the name
-# of the subfeature. If value-string is supplied, looks for implied
-# subfeatures that are specific to that value of feature
-# feature # The main feature name
-# subvalue # The value of one of its subfeatures
-# value-string # The value of the main feature
-
-def implied_subfeature (feature, subvalue, value_string):
- result = __find_implied_subfeature (feature, subvalue, value_string)
- if not result:
- raise InvalidValue ("'%s' is not a known subfeature value of '%s%s'" % (subvalue, feature, value_string))
-
- return result
-
-def validate_feature (name):
- """ Checks if all name is a valid feature. Otherwise, raises an exception.
- """
- if not __all_features.has_key(name):
- raise InvalidFeature ("'%s' is not a valid feature name" % name)
- else:
- return __all_features[name]
-
-def valid (names):
- """ Returns true iff all elements of names are valid features.
- """
- def valid_one (name): return __all_features.has_key (name)
-
- if isinstance (names, str):
- return valid_one (names)
- else:
- return [ valid_one (name) for name in names ]
-
-# Uses Property
-def __expand_subfeatures_aux (property, dont_validate = False):
- """ Helper for expand_subfeatures.
- Given a feature and value, or just a value corresponding to an
- implicit feature, returns a property set consisting of all component
- subfeatures and their values. For example:
-
- expand_subfeatures <toolset>gcc-2.95.2-linux-x86
- -> <toolset>gcc <toolset-version>2.95.2 <toolset-os>linux <toolset-cpu>x86
- equivalent to:
- expand_subfeatures gcc-2.95.2-linux-x86
-
- feature: The name of the feature, or empty if value corresponds to an implicit property
- value: The value of the feature.
- dont_validate: If True, no validation of value string will be done.
- """
- f = property.feature()
- v = property.value()
- if not dont_validate:
- validate_value_string(f, v)
-
- components = v.split ("-")
-
- v = components[0]
-
- import property
-
- result = [property.Property(f, components[0])]
-
- subvalues = components[1:]
-
- while len(subvalues) > 0:
- subvalue = subvalues [0] # pop the head off of subvalues
- subvalues = subvalues [1:]
-
- subfeature = __find_implied_subfeature (f, subvalue, v)
-
- # If no subfeature was found, reconstitute the value string and use that
- if not subfeature:
- return [property.Property(f, '-'.join(components))]
-
- result.append(property.Property(subfeature, subvalue))
-
- return result
-
-def expand_subfeatures(properties, dont_validate = False):
- """
- Make all elements of properties corresponding to implicit features
- explicit, and express all subfeature values as separate properties
- in their own right. For example, the property
-
- gcc-2.95.2-linux-x86
-
- might expand to
-
- <toolset>gcc <toolset-version>2.95.2 <toolset-os>linux <toolset-cpu>x86
-
- properties: A sequence with elements of the form
- <feature>value-string or just value-string in the
- case of implicit features.
- : dont_validate: If True, no validation of value string will be done.
- """
- result = []
- for p in properties:
- # Don't expand subfeatures in subfeatures
- if p.feature().subfeature():
- result.append (p)
- else:
- result.extend(__expand_subfeatures_aux (p, dont_validate))
-
- return result
-
-
-
-# rule extend was defined as below:
- # Can be called three ways:
- #
- # 1. extend feature : values *
- # 2. extend <feature> subfeature : values *
- # 3. extend <feature>value-string subfeature : values *
- #
- # * Form 1 adds the given values to the given feature
- # * Forms 2 and 3 add subfeature values to the given feature
- # * Form 3 adds the subfeature values as specific to the given
- # property value-string.
- #
- #rule extend ( feature-or-property subfeature ? : values * )
-#
-# Now, the specific rule must be called, depending on the desired operation:
-# extend_feature
-# extend_subfeature
-
-def extend (name, values):
- """ Adds the given values to the given feature.
- """
- name = add_grist (name)
- __validate_feature (name)
- feature = __all_features [name]
-
- if feature.implicit():
- for v in values:
- if __implicit_features.has_key(v):
- raise BaseException ("'%s' is already associated with the feature '%s'" % (v, __implicit_features [v]))
-
- __implicit_features[v] = feature
-
- if len (feature.values()) == 0 and len (values) > 0:
- # This is the first value specified for this feature,
- # take it as default value
- feature.set_default(values[0])
-
- feature.add_values(values)
-
-def validate_value_string (f, value_string):
- """ Checks that value-string is a valid value-string for the given feature.
- """
- if f.free() or value_string in f.values():
- return
-
- values = [value_string]
-
- if f.subfeatures():
- if not value_string in f.values() and \
- not value_string in f.subfeatures():
- values = value_string.split('-')
-
- # An empty value is allowed for optional features
- if not values[0] in f.values() and \
- (values[0] or not f.optional()):
- raise InvalidValue ("'%s' is not a known value of feature '%s'\nlegal values: '%s'" % (values [0], feature, f.values()))
-
- for v in values [1:]:
- # this will validate any subfeature values in value-string
- implied_subfeature(f, v, values[0])
-
-
-""" Extends the given subfeature with the subvalues. If the optional
- value-string is provided, the subvalues are only valid for the given
- value of the feature. Thus, you could say that
- <target-platform>mingw is specifc to <toolset>gcc-2.95.2 as follows:
-
- extend-subfeature toolset gcc-2.95.2 : target-platform : mingw ;
-
- feature: The feature whose subfeature is being extended.
-
- value-string: If supplied, specifies a specific value of the
- main feature for which the new subfeature values
- are valid.
-
- subfeature: The name of the subfeature.
-
- subvalues: The additional values of the subfeature being defined.
-"""
-def extend_subfeature (feature_name, value_string, subfeature_name, subvalues):
-
- feature = validate_feature(feature_name)
-
- if value_string:
- validate_value_string(feature, value_string)
-
- subfeature_name = feature_name + '-' + __get_subfeature_name (subfeature_name, value_string)
-
- extend(subfeature_name, subvalues) ;
- subfeature = __all_features[subfeature_name]
-
- if value_string == None: value_string = ''
-
- if not __subfeature_from_value.has_key(feature):
- __subfeature_from_value [feature] = {}
-
- if not __subfeature_from_value[feature].has_key(value_string):
- __subfeature_from_value [feature][value_string] = {}
-
- for subvalue in subvalues:
- __subfeature_from_value [feature][value_string][subvalue] = subfeature
-
-@bjam_signature((["feature_name", "value_string", "?"], ["subfeature"],
- ["subvalues", "*"], ["attributes", "*"]))
-def subfeature (feature_name, value_string, subfeature, subvalues, attributes = []):
- """ Declares a subfeature.
- feature_name: Root feature that is not a subfeature.
- value_string: An optional value-string specifying which feature or
- subfeature values this subfeature is specific to,
- if any.
- subfeature: The name of the subfeature being declared.
- subvalues: The allowed values of this subfeature.
- attributes: The attributes of the subfeature.
- """
- parent_feature = validate_feature (feature_name)
-
- # Add grist to the subfeature name if a value-string was supplied
- subfeature_name = __get_subfeature_name (subfeature, value_string)
-
- if subfeature_name in __all_features[feature_name].subfeatures():
- message = "'%s' already declared as a subfeature of '%s'" % (subfeature, feature_name)
- message += " specific to '%s'" % value_string
- raise BaseException (message)
-
- # First declare the subfeature as a feature in its own right
- f = feature (feature_name + '-' + subfeature_name, subvalues, attributes + ['subfeature'])
- f.set_parent(parent_feature, value_string)
-
- parent_feature.add_subfeature(f)
-
- # Now make sure the subfeature values are known.
- extend_subfeature (feature_name, value_string, subfeature, subvalues)
-
-
-@bjam_signature((["composite_property_s"], ["component_properties_s", "*"]))
-def compose (composite_property_s, component_properties_s):
- """ Sets the components of the given composite property.
-
- All paremeters are <feature>value strings
- """
- import property
-
- component_properties_s = to_seq (component_properties_s)
- composite_property = property.create_from_string(composite_property_s)
- f = composite_property.feature()
-
- if len(component_properties_s) > 0 and isinstance(component_properties_s[0], property.Property):
- component_properties = component_properties_s
- else:
- component_properties = [property.create_from_string(p) for p in component_properties_s]
-
- if not f.composite():
- raise BaseException ("'%s' is not a composite feature" % f)
-
- if __composite_properties.has_key(property):
- raise BaseException ('components of "%s" already set: %s' % (composite_property, str (__composite_properties[composite_property])))
-
- if composite_property in component_properties:
- raise BaseException ('composite property "%s" cannot have itself as a component' % composite_property)
-
- __composite_properties[composite_property] = component_properties
-
-
-def expand_composite(property):
- result = [ property ]
- if __composite_properties.has_key(property):
- for p in __composite_properties[property]:
- result.extend(expand_composite(p))
- return result
-
-
-def get_values (feature, properties):
- """ Returns all values of the given feature specified by the given property set.
- """
- result = []
- for p in properties:
- if get_grist (p) == feature:
- result.append (replace_grist (p, ''))
-
- return result
-
-def free_features ():
- """ Returns all free features.
- """
- return __free_features
-
-def expand_composites (properties):
- """ Expand all composite properties in the set so that all components
- are explicitly expressed.
- """
- explicit_features = set(p.feature() for p in properties)
-
- result = []
-
- # now expand composite features
- for p in properties:
- expanded = expand_composite(p)
-
- for x in expanded:
- if not x in result:
- f = x.feature()
-
- if f.free():
- result.append (x)
- elif not x in properties: # x is the result of expansion
- if not f in explicit_features: # not explicitly-specified
- if any(r.feature() == f for r in result):
- raise FeatureConflict(
- "expansions of composite features result in "
- "conflicting values for '%s'\nvalues: '%s'\none contributing composite property was '%s'" %
- (f.name(), [r.value() for r in result if r.feature() == f] + [x.value()], p))
- else:
- result.append (x)
- elif any(r.feature() == f for r in result):
- raise FeatureConflict ("explicitly-specified values of non-free feature '%s' conflict\n"
- "existing values: '%s'\nvalue from expanding '%s': '%s'" % (f,
- [r.value() for r in result if r.feature() == f], p, x.value()))
- else:
- result.append (x)
-
- return result
-
-# Uses Property
-def is_subfeature_of (parent_property, f):
- """ Return true iff f is an ordinary subfeature of the parent_property's
- feature, or if f is a subfeature of the parent_property's feature
- specific to the parent_property's value.
- """
- if not f.subfeature():
- return False
-
- p = f.parent()
- if not p:
- return False
-
- parent_feature = p[0]
- parent_value = p[1]
-
- if parent_feature != parent_property.feature():
- return False
-
- if parent_value and parent_value != parent_property.value():
- return False
-
- return True
-
-def __is_subproperty_of (parent_property, p):
- """ As is_subfeature_of, for subproperties.
- """
- return is_subfeature_of (parent_property, p.feature())
-
-
-# Returns true iff the subvalue is valid for the feature. When the
-# optional value-string is provided, returns true iff the subvalues
-# are valid for the given value of the feature.
-def is_subvalue(feature, value_string, subfeature, subvalue):
-
- if not value_string:
- value_string = ''
-
- if not __subfeature_from_value.has_key(feature):
- return False
-
- if not __subfeature_from_value[feature].has_key(value_string):
- return False
-
- if not __subfeature_from_value[feature][value_string].has_key(subvalue):
- return False
-
- if __subfeature_from_value[feature][value_string][subvalue]\
- != subfeature:
- return False
-
- return True
-
-def implied_subfeature (feature, subvalue, value_string):
- result = __find_implied_subfeature (feature, subvalue, value_string)
- if not result:
- raise InvalidValue ("'%s' is not a known subfeature value of '%s%s'" % (subvalue, feature, value_string))
-
- return result
-
-
-# Uses Property
-def expand (properties):
- """ Given a property set which may consist of composite and implicit
- properties and combined subfeature values, returns an expanded,
- normalized property set with all implicit features expressed
- explicitly, all subfeature values individually expressed, and all
- components of composite properties expanded. Non-free features
- directly expressed in the input properties cause any values of
- those features due to composite feature expansion to be dropped. If
- two values of a given non-free feature are directly expressed in the
- input, an error is issued.
- """
- expanded = expand_subfeatures(properties)
- return expand_composites (expanded)
-
-# Accepts list of Property objects
-def add_defaults (properties):
- """ Given a set of properties, add default values for features not
- represented in the set.
- Note: if there's there's ordinary feature F1 and composite feature
- F2, which includes some value for F1, and both feature have default values,
- then the default value of F1 will be added, not the value in F2. This might
- not be right idea: consider
-
- feature variant : debug ... ;
- <variant>debug : .... <runtime-debugging>on
- feature <runtime-debugging> : off on ;
-
- Here, when adding default for an empty property set, we'll get
-
- <variant>debug <runtime_debugging>off
-
- and that's kind of strange.
- """
- result = [x for x in properties]
-
- handled_features = set()
- for p in properties:
- # We don't add default for conditional properties. We don't want
- # <variant>debug:<define>DEBUG to be takes as specified value for <variant>
- if not p.condition():
- handled_features.add(p.feature())
-
- missing_top = [f for f in __all_top_features if not f in handled_features]
- more = defaults(missing_top)
- result.extend(more)
- for p in more:
- handled_features.add(p.feature())
-
- # Add defaults for subfeatures of features which are present
- for p in result[:]:
- s = p.feature().subfeatures()
- more = defaults([s for s in p.feature().subfeatures() if not s in handled_features])
- for p in more:
- handled_features.add(p.feature())
- result.extend(more)
-
- return result
-
-def minimize (properties):
- """ Given an expanded property set, eliminate all redundancy: properties
- which are elements of other (composite) properties in the set will
- be eliminated. Non-symmetric properties equal to default values will be
- eliminated, unless the override a value from some composite property.
- Implicit properties will be expressed without feature
- grist, and sub-property values will be expressed as elements joined
- to the corresponding main property.
- """
-
- # remove properties implied by composite features
- components = []
- for property in properties:
- if __composite_properties.has_key (property):
- components.extend(__composite_properties[property])
- properties = b2.util.set.difference (properties, components)
-
- # handle subfeatures and implicit features
-
- # move subfeatures to the end of the list
- properties = [p for p in properties if not p.feature().subfeature()] +\
- [p for p in properties if p.feature().subfeature()]
-
- result = []
- while properties:
- p = properties[0]
- f = p.feature()
-
- # locate all subproperties of $(x[1]) in the property set
- subproperties = __select_subproperties (p, properties)
-
- if subproperties:
- # reconstitute the joined property name
- subproperties.sort ()
- joined = b2.build.property.Property(p.feature(), p.value() + '-' + '-'.join ([sp.value() for sp in subproperties]))
- result.append(joined)
-
- properties = b2.util.set.difference(properties[1:], subproperties)
-
- else:
- # eliminate properties whose value is equal to feature's
- # default and which are not symmetric and which do not
- # contradict values implied by composite properties.
-
- # since all component properties of composites in the set
- # have been eliminated, any remaining property whose
- # feature is the same as a component of a composite in the
- # set must have a non-redundant value.
- if p.value() != f.default() or f.symmetric():
- result.append (p)
- #\
- #or get_grist (fullp) in get_grist (components):
- # FIXME: restore above
-
-
- properties = properties[1:]
-
- return result
-
-
-def split (properties):
- """ Given a property-set of the form
- v1/v2/...vN-1/<fN>vN/<fN+1>vN+1/...<fM>vM
-
- Returns
- v1 v2 ... vN-1 <fN>vN <fN+1>vN+1 ... <fM>vM
-
- Note that vN...vM may contain slashes. This is resilient to the
- substitution of backslashes for slashes, since Jam, unbidden,
- sometimes swaps slash direction on NT.
- """
-
- def split_one (properties):
- pieces = re.split (__re_slash_or_backslash, properties)
- result = []
-
- for x in pieces:
- if not get_grist (x) and len (result) > 0 and get_grist (result [-1]):
- result = result [0:-1] + [ result [-1] + '/' + x ]
- else:
- result.append (x)
-
- return result
-
- if isinstance (properties, str):
- return split_one (properties)
-
- result = []
- for p in properties:
- result += split_one (p)
- return result
-
-
-def compress_subproperties (properties):
- """ Combine all subproperties into their parent properties
-
- Requires: for every subproperty, there is a parent property. All
- features are explicitly expressed.
-
- This rule probably shouldn't be needed, but
- build-request.expand-no-defaults is being abused for unintended
- purposes and it needs help
- """
- result = []
- matched_subs = set()
- all_subs = set()
- for p in properties:
- f = p.feature()
-
- if not f.subfeature():
- subs = __select_subproperties (p, properties)
- if subs:
-
- matched_subs.update(subs)
-
- subvalues = '-'.join (sub.value() for sub in subs)
- result.append(b2.build.property.Property(
- p.feature(), p.value() + '-' + subvalues,
- p.condition()))
- else:
- result.append(p)
-
- else:
- all_subs.add(p)
-
- # TODO: this variables are used just for debugging. What's the overhead?
- assert all_subs == matched_subs
-
- return result
-
-######################################################################################
-# Private methods
-
-def __select_subproperties (parent_property, properties):
- return [ x for x in properties if __is_subproperty_of (parent_property, x) ]
-
-def __get_subfeature_name (subfeature, value_string):
- if value_string == None:
- prefix = ''
- else:
- prefix = value_string + ':'
-
- return prefix + subfeature
-
-
-def __validate_feature_attributes (name, attributes):
- for attribute in attributes:
- if not attribute in __all_attributes:
- raise InvalidAttribute ("unknown attributes: '%s' in feature declaration: '%s'" % (str (b2.util.set.difference (attributes, __all_attributes)), name))
-
- if name in __all_features:
- raise AlreadyDefined ("feature '%s' already defined" % name)
- elif 'implicit' in attributes and 'free' in attributes:
- raise InvalidAttribute ("free features cannot also be implicit (in declaration of feature '%s')" % name)
- elif 'free' in attributes and 'propagated' in attributes:
- raise InvalidAttribute ("free features cannot also be propagated (in declaration of feature '%s')" % name)
-
-
-def __validate_feature (feature):
- """ Generates an error if the feature is unknown.
- """
- if not __all_features.has_key (feature):
- raise BaseException ('unknown feature "%s"' % feature)
-
-
-def __select_subfeatures (parent_property, features):
- """ Given a property, return the subset of features consisting of all
- ordinary subfeatures of the property's feature, and all specific
- subfeatures of the property's feature which are conditional on the
- property's value.
- """
- return [f for f in features if is_subfeature_of (parent_property, f)]
-
-# FIXME: copy over tests.