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Diffstat (limited to 'jam-files/boost-build/build/feature.jam')
| -rw-r--r-- | jam-files/boost-build/build/feature.jam | 1335 |
1 files changed, 0 insertions, 1335 deletions
diff --git a/jam-files/boost-build/build/feature.jam b/jam-files/boost-build/build/feature.jam deleted file mode 100644 index 6f54adef..00000000 --- a/jam-files/boost-build/build/feature.jam +++ /dev/null @@ -1,1335 +0,0 @@ -# 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 assert : * ; -import "class" : * ; -import errors : lol->list ; -import indirect ; -import modules ; -import regex ; -import sequence ; -import set ; -import utility ; - - -local rule setup ( ) -{ - .all-attributes = - implicit - composite - optional - symmetric - free - incidental - path - dependency - propagated - link-incompatible - subfeature - order-sensitive - ; - - .all-features = ; - .all-subfeatures = ; - .all-top-features = ; # non-subfeatures - .all-implicit-values = ; -} -setup ; - - -# Prepare a fresh space to test in by moving all global variable settings into -# the given temporary module and erasing them here. -# -rule prepare-test ( temp-module ) -{ - DELETE_MODULE $(temp-module) ; - - # Transfer globals to temp-module. - for local v in [ VARNAMES feature ] - { - if [ MATCH (\\.) : $(v) ] - { - modules.poke $(temp-module) : $(v) : $($(v)) ; - $(v) = ; - } - } - setup ; -} - - -# Clear out all global variables and recover all variables from the given -# temporary module. -# -rule finish-test ( temp-module ) -{ - # Clear globals. - for local v in [ VARNAMES feature ] - { - if [ MATCH (\\.) : $(v) ] - { - $(v) = ; - } - } - - for local v in [ VARNAMES $(temp-module) ] - { - $(v) = [ modules.peek $(temp-module) : $(v) ] ; - } - DELETE_MODULE $(temp-module) ; -} - - -# Transform features by bracketing any elements which are not already bracketed -# by "<>". -# -local rule grist ( features * ) -{ - local empty = "" ; - return $(empty:G=$(features)) ; -} - - -# Declare a new feature with the given name, values, and attributes. -# -rule feature ( - name # Feature name. - : values * # Allowable values - may be extended later using feature.extend. - : attributes * # Feature attributes (e.g. implicit, free, propagated...). -) -{ - name = [ grist $(name) ] ; - - local error ; - - # Check for any unknown attributes. - if ! ( $(attributes) in $(.all-attributes) ) - { - error = unknown attributes: - [ set.difference $(attributes) : $(.all-attributes) ] ; - } - else if $(name) in $(.all-features) - { - error = feature already defined: ; - } - else if implicit in $(attributes) && free in $(attributes) - { - error = free features cannot also be implicit ; - } - else if free in $(attributes) && propagated in $(attributes) - { - error = free features cannot be propagated ; - } - else - { - local m = [ MATCH (.*=.*) : $(values) ] ; - if $(m[1]) - { - error = "feature value may not contain '='" ; - } - } - - if $(error) - { - errors.error $(error) - : "in" feature declaration: - : feature [ lol->list $(1) : $(2) : $(3) ] ; - } - - $(name).values ?= ; - $(name).attributes = $(attributes) ; - $(name).subfeatures ?= ; - $(attributes).features += $(name) ; - - .all-features += $(name) ; - if subfeature in $(attributes) - { - .all-subfeatures += $(name) ; - } - else - { - .all-top-features += $(name) ; - } - extend $(name) : $(values) ; -} - - -# Sets the default value of the given feature, overriding any previous default. -# -rule set-default ( feature : value ) -{ - local f = [ grist $(feature) ] ; - local a = $($(f).attributes) ; - local bad-attribute = ; - if free in $(a) - { - bad-attribute = free ; - } - else if optional in $(a) - { - bad-attribute = optional ; - } - if $(bad-attribute) - { - errors.error "$(bad-attribute) property $(f) cannot have a default." ; - } - if ! $(value) in $($(f).values) - { - errors.error "The specified default value, '$(value)' is invalid" - : "allowed values are: " $($(f).values) ; - } - $(f).default = $(value) ; -} - - -# Returns the default property values for the given features. -# -rule defaults ( features * ) -{ - local result ; - for local f in $(features) - { - local gf = $(:E=:G=$(f)) ; - local a = $($(gf).attributes) ; - if ( free in $(a) ) || ( optional in $(a) ) - { - } - else - { - result += $(gf)$($(gf).default) ; - } - } - return $(result) ; -} - - -# Returns true iff all 'names' elements are valid features. -# -rule valid ( names + ) -{ - if $(names) in $(.all-features) - { - return true ; - } -} - - -# Returns the attibutes of the given feature. -# -rule attributes ( feature ) -{ - return $($(:E=:G=$(feature)).attributes) ; -} - - -# Returns the values of the given feature. -# -rule values ( feature ) -{ - return $($(:E=:G=$(feature)).values) ; -} - - -# Returns true iff 'value-string' is a value-string of an implicit feature. -# -rule is-implicit-value ( value-string ) -{ - local v = [ regex.split $(value-string) - ] ; - local failed ; - if ! $(v[1]) in $(.all-implicit-values) - { - failed = true ; - } - else - { - local feature = $($(v[1]).implicit-feature) ; - for local subvalue in $(v[2-]) - { - if ! [ find-implied-subfeature $(feature) $(subvalue) : $(v[1]) ] - { - failed = true ; - } - } - } - - if ! $(failed) - { - return true ; - } -} - - -# Returns the implicit feature associated with the given implicit value. -# -rule implied-feature ( implicit-value ) -{ - local components = [ regex.split $(implicit-value) "-" ] ; - - local feature = $($(components[1]).implicit-feature) ; - if ! $(feature) - { - errors.error \"$(implicit-value)\" is not a value of an implicit feature ; - feature = "" ; # Keep testing happy; it expects a result. - } - return $(feature) ; -} - - -local rule find-implied-subfeature ( feature subvalue : value-string ? ) -{ - # Feature should be of the form <feature-name>. - if $(feature) != $(feature:G) - { - errors.error invalid feature $(feature) ; - } - - return $($(feature)$(value-string:E="")<>$(subvalue).subfeature) ; -} - - -# 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 -# -rule implied-subfeature ( - feature # The main feature name. - subvalue # The value of one of its subfeatures. - : value-string ? # The value of the main feature. -) -{ - local subfeature = [ find-implied-subfeature $(feature) $(subvalue) - : $(value-string) ] ; - if ! $(subfeature) - { - value-string ?= "" ; - errors.error \"$(subvalue)\" is not a known subfeature value of - $(feature)$(value-string) ; - } - return $(subfeature) ; -} - - -# Generate an error if the feature is unknown. -# -local rule validate-feature ( feature ) -{ - if ! $(feature) in $(.all-features) - { - errors.error unknown feature \"$(feature)\" ; - } -} - - -# Given a feature and its value or just a value corresponding to an implicit -# feature, returns a property set consisting of all component subfeatures and -# their values. For example all the following calls: -# -# expand-subfeatures-aux <toolset>gcc-2.95.2-linux-x86 -# expand-subfeatures-aux gcc-2.95.2-linux-x86 -# -# return: -# -# <toolset>gcc <toolset-version>2.95.2 <toolset-os>linux <toolset-cpu>x86 -# -local rule expand-subfeatures-aux ( - feature ? # Feature name or empty if value corresponds to an - # implicit property. - : value # Feature value. - : dont-validate ? # If set, no value string validation will be done. -) -{ - if $(feature) - { - feature = $(feature) ; - } - - if ! $(feature) - { - feature = [ implied-feature $(value) ] ; - } - else - { - validate-feature $(feature) ; - } - if ! $(dont-validate) - { - validate-value-string $(feature) $(value) ; - } - - local components = [ regex.split $(value) "-" ] ; - - # Get the top-level feature's value. - local value = $(components[1]:G=) ; - - local result = $(components[1]:G=$(feature)) ; - - local subvalues = $(components[2-]) ; - while $(subvalues) - { - local subvalue = $(subvalues[1]) ; # Pop the head off of subvalues. - subvalues = $(subvalues[2-]) ; - - local subfeature = [ find-implied-subfeature $(feature) $(subvalue) : - $(value) ] ; - - # If no subfeature was found reconstitute the value string and use that. - if ! $(subfeature) - { - result = $(components:J=-) ; - result = $(result:G=$(feature)) ; - subvalues = ; # Stop looping. - } - else - { - local f = [ MATCH ^<(.*)>$ : $(feature) ] ; - result += $(subvalue:G=$(f)-$(subfeature)) ; - } - } - - return $(result) ; -} - - -# Make all elements of properties corresponding to implicit features explicit, -# and express all subfeature values as separate properties in their own right. -# For example, all of the following properties -# -# gcc-2.95.2-linux-x86 -# <toolset>gcc-2.95.2-linux-x86 -# -# might expand to -# -# <toolset>gcc <toolset-version>2.95.2 <toolset-os>linux <toolset-cpu>x86 -# -rule expand-subfeatures ( - properties * # Property set with elements of the form - # <feature>value-string or just value-string in the case - # of implicit features. - : dont-validate ? -) -{ - local result ; - for local p in $(properties) - { - # Don't expand subfeatures in subfeatures - if ! [ MATCH "(:)" : $(p:G) ] - { - result += [ expand-subfeatures-aux $(p:G) : $(p:G=) : $(dont-validate) ] ; - } - else - { - result += $(p) ; - } - } - return $(result) ; -} - - -# Helper for extend, below. Handles the feature case. -# -local rule extend-feature ( feature : values * ) -{ - feature = [ grist $(feature) ] ; - validate-feature $(feature) ; - if implicit in $($(feature).attributes) - { - for local v in $(values) - { - if $($(v).implicit-feature) - { - errors.error $(v) is already associated with the \"$($(v).implicit-feature)\" feature ; - } - $(v).implicit-feature = $(feature) ; - } - - .all-implicit-values += $(values) ; - } - if ! $($(feature).values) - { - # This is the first value specified for this feature so make it be the - # default. - $(feature).default = $(values[1]) ; - } - $(feature).values += $(values) ; -} - - -# Checks that value-string is a valid value-string for the given feature. -# -rule validate-value-string ( feature value-string ) -{ - if ! ( - free in $($(feature).attributes) - || ( $(value-string) in $(feature).values ) - ) - { - local values = $(value-string) ; - - if $($(feature).subfeatures) - { - if ! ( $(value-string) in $($(feature).values) ) - && ! ( $(value-string) in $($(feature).subfeatures) ) - { - values = [ regex.split $(value-string) - ] ; - } - } - - if ! ( $(values[1]) in $($(feature).values) ) && - - # An empty value is allowed for optional features. - ( $(values[1]) || ! ( optional in $($(feature).attributes) ) ) - { - errors.error \"$(values[1])\" is not a known value of feature $(feature) - : legal values: \"$($(feature).values)\" ; - } - - for local v in $(values[2-]) - { - # This will validate any subfeature values in value-string. - implied-subfeature $(feature) $(v) : $(values[1]) ; - } - } -} - - -# A helper that computes: -# * name(s) of module-local variable(s) used to record the correspondence -# between subvalue(s) and a subfeature -# * value of that variable when such a subfeature/subvalue has been defined and -# returns a list consisting of the latter followed by the former. -# -local rule subvalue-var ( - feature # Main feature name. - value-string ? # If supplied, specifies a specific value of the main - # feature for which the subfeature values are valid. - : subfeature # Subfeature name. - : subvalues * # Subfeature values. -) -{ - feature = [ grist $(feature) ] ; - validate-feature $(feature) ; - if $(value-string) - { - validate-value-string $(feature) $(value-string) ; - } - - local subfeature-name = [ get-subfeature-name $(subfeature) $(value-string) ] ; - - return $(subfeature-name) - $(feature)$(value-string:E="")<>$(subvalues).subfeature ; -} - - -# 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 specific to -# <toolset>gcc-2.95.2 as follows: -# -# extend-subfeature toolset gcc-2.95.2 : target-platform : mingw ; -# -rule extend-subfeature ( - 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 # Subfeature name. - : subvalues * # Additional subfeature values. -) -{ - local subfeature-vars = [ subvalue-var $(feature) $(value-string) - : $(subfeature) : $(subvalues) ] ; - - local f = [ utility.ungrist [ grist $(feature) ] ] ; - extend $(f)-$(subfeature-vars[1]) : $(subvalues) ; - - # Provide a way to get from the given feature or property and subfeature - # value to the subfeature name. - $(subfeature-vars[2-]) = $(subfeature-vars[1]) ; -} - - -# Returns true iff the subvalues are 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. -# -rule is-subvalue ( feature : value-string ? : subfeature : subvalue ) -{ - local subfeature-vars = [ subvalue-var $(feature) $(value-string) - : $(subfeature) : $(subvalue) ] ; - - if $($(subfeature-vars[2])) = $(subfeature-vars[1]) - { - return true ; - } -} - - -# 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 * ) -{ - local feature ; # If a property was specified this is its feature. - local value-string ; # E.g., the gcc-2.95-2 part of <toolset>gcc-2.95.2. - - # If a property was specified. - if $(feature-or-property:G) && $(feature-or-property:G=) - { - # Extract the feature and value-string, if any. - feature = $(feature-or-property:G) ; - value-string = $(feature-or-property:G=) ; - } - else - { - feature = [ grist $(feature-or-property) ] ; - } - - # Dispatch to the appropriate handler. - if $(subfeature) - { - extend-subfeature $(feature) $(value-string) : $(subfeature) - : $(values) ; - } - else - { - # If no subfeature was specified, we do not expect to see a - # value-string. - if $(value-string) - { - errors.error can only specify a property as the first argument when - extending a subfeature - : usage: - : " extend" feature ":" values... - : " | extend" <feature>value-string subfeature ":" values... - ; - } - - extend-feature $(feature) : $(values) ; - } -} - - -local rule get-subfeature-name ( subfeature value-string ? ) -{ - local prefix = $(value-string): ; - return $(prefix:E="")$(subfeature) ; -} - - -# Declares a subfeature. -# -rule subfeature ( - feature # Root feature that is not a subfeature. - value-string ? # A 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. -) -{ - feature = [ grist $(feature) ] ; - validate-feature $(feature) ; - - # Add grist to the subfeature name if a value-string was supplied. - local subfeature-name = [ get-subfeature-name $(subfeature) $(value-string) ] ; - - if $(subfeature-name) in $($(feature).subfeatures) - { - errors.error \"$(subfeature)\" already declared as a subfeature of \"$(feature)\" - "specific to "$(value-string) ; - } - $(feature).subfeatures += $(subfeature-name) ; - - # First declare the subfeature as a feature in its own right. - local f = [ utility.ungrist $(feature) ] ; - feature $(f)-$(subfeature-name) : $(subvalues) : $(attributes) subfeature ; - - # Now make sure the subfeature values are known. - extend-subfeature $(feature) $(value-string) : $(subfeature) : $(subvalues) ; -} - - -# Set components of the given composite property. -# -rule compose ( composite-property : component-properties * ) -{ - local feature = $(composite-property:G) ; - if ! ( composite in [ attributes $(feature) ] ) - { - errors.error "$(feature)" is not a composite feature ; - } - - $(composite-property).components ?= ; - if $($(composite-property).components) - { - errors.error components of "$(composite-property)" already set: - $($(composite-property).components) ; - } - - if $(composite-property) in $(component-properties) - { - errors.error composite property "$(composite-property)" cannot have itself as a component ; - } - $(composite-property).components = $(component-properties) ; -} - - -local rule expand-composite ( property ) -{ - return $(property) - [ sequence.transform expand-composite : $($(property).components) ] ; -} - - -# Return all values of the given feature specified by the given property set. -# -rule get-values ( feature : properties * ) -{ - local result ; - - feature = $(:E=:G=$(feature)) ; # Add <> if necessary. - for local p in $(properties) - { - if $(p:G) = $(feature) - { - # Use MATCH instead of :G= to get the value, in order to preserve - # the value intact instead of having bjam treat it as a decomposable - # path. - result += [ MATCH ">(.*)" : $(p) ] ; - } - } - return $(result) ; -} - - -rule free-features ( ) -{ - return $(free.features) ; -} - - -# Expand all composite properties in the set so that all components are -# explicitly expressed. -# -rule expand-composites ( properties * ) -{ - local explicit-features = $(properties:G) ; - local result ; - - # Now expand composite features. - for local p in $(properties) - { - local expanded = [ expand-composite $(p) ] ; - - for local x in $(expanded) - { - if ! $(x) in $(result) - { - local f = $(x:G) ; - - if $(f) in $(free.features) - { - result += $(x) ; - } - else if ! $(x) in $(properties) # x is the result of expansion - { - if ! $(f) in $(explicit-features) # not explicitly-specified - { - if $(f) in $(result:G) - { - errors.error expansions of composite features result - in conflicting values for $(f) - : values: [ get-values $(f) : $(result) ] $(x:G=) - : one contributing composite property was $(p) ; - } - else - { - result += $(x) ; - } - } - } - else if $(f) in $(result:G) - { - errors.error explicitly-specified values of non-free feature - $(f) conflict : - "existing values:" [ get-values $(f) : $(properties) ] : - "value from expanding " $(p) ":" $(x:G=) ; - } - else - { - result += $(x) ; - } - } - } - } - return $(result) ; -} - - -# 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. -# -local rule is-subfeature-of ( parent-property f ) -{ - if subfeature in $($(f).attributes) - { - local specific-subfeature = [ MATCH <(.*):(.*)> : $(f) ] ; - if $(specific-subfeature) - { - # The feature has the form <topfeature-topvalue:subfeature>, e.g. - # <toolset-msvc:version>. - local feature-value = [ split-top-feature $(specific-subfeature[1]) - ] ; - if <$(feature-value[1])>$(feature-value[2]) = $(parent-property) - { - return true ; - } - } - else - { - # The feature has the form <topfeature-subfeature>, e.g. - # <toolset-version> - local top-sub = [ split-top-feature [ utility.ungrist $(f) ] ] ; - if $(top-sub[2]) && <$(top-sub[1])> = $(parent-property:G) - { - return true ; - } - } - } -} - - -# As for is-subfeature-of but for subproperties. -# -local rule is-subproperty-of ( parent-property p ) -{ - return [ is-subfeature-of $(parent-property) $(p:G) ] ; -} - - -# 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. -# -local rule select-subfeatures ( parent-property : features * ) -{ - return [ sequence.filter is-subfeature-of $(parent-property) : $(features) ] ; -} - - -# As for select-subfeatures but for subproperties. -# -local rule select-subproperties ( parent-property : properties * ) -{ - return [ sequence.filter is-subproperty-of $(parent-property) : $(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. -# -rule expand ( properties * ) -{ - local expanded = [ expand-subfeatures $(properties) ] ; - return [ expand-composites $(expanded) ] ; -} - - -# Helper rule for minimize. Returns true iff property's feature is present in -# the contents of the variable named by feature-set-var. -# -local rule in-features ( feature-set-var property ) -{ - if $(property:G) in $($(feature-set-var)) - { - return true ; - } -} - - -# Helper rule for minimize. Returns the list with the same properties, but with -# all subfeatures moved to the end of the list. -# -local rule move-subfeatures-to-the-end ( properties * ) -{ - local x1 ; - local x2 ; - for local p in $(properties) - { - if subfeature in $($(p:G).attributes) - { - x2 += $(p) ; - } - else - { - x1 += $(p) ; - } - } - return $(x1) $(x2) ; -} - - -# Given an expanded property set, eliminate all redundancy: properties that are -# elements of other (composite) properties in the set will be eliminated. -# Non-symmetric properties equal to default values will be eliminated unless -# they 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. -# -rule minimize ( properties * ) -{ - # Precondition checking - local implicits = [ set.intersection $(p:G=) : $(p:G) ] ; - if $(implicits) - { - errors.error minimize requires an expanded property set, but - \"$(implicits[1])\" appears to be the value of an un-expanded - implicit feature ; - } - - # Remove properties implied by composite features. - local components = $($(properties).components) ; - local x = [ set.difference $(properties) : $(components) ] ; - - # Handle subfeatures and implicit features. - x = [ move-subfeatures-to-the-end $(x) ] ; - local result ; - while $(x) - { - local p fullp = $(x[1]) ; - local f = $(p:G) ; - local v = $(p:G=) ; - - # Eliminate features in implicit properties. - if implicit in [ attributes $(f) ] - { - p = $(v) ; - } - - # Locate all subproperties of $(x[1]) in the property set. - local subproperties = [ select-subproperties $(fullp) : $(x) ] ; - if $(subproperties) - { - # Reconstitute the joined property name. - local sorted = [ sequence.insertion-sort $(subproperties) ] ; - result += $(p)-$(sorted:G="":J=-) ; - - x = [ set.difference $(x[2-]) : $(subproperties) ] ; - } - else - { - # Eliminate properties whose value is equal to feature's default, - # 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 $(fullp) != [ defaults $(f) ] - || symmetric in [ attributes $(f) ] - || $(fullp:G) in $(components:G) - { - result += $(p) ; - } - - x = $(x[2-]) ; - } - } - return $(result) ; -} - - -# Combine all subproperties into their parent properties -# -# Requires: for every subproperty, there is a parent property. All features are -# explicitly expressed. -# -# This rule probably should not be needed, but build-request.expand-no-defaults -# is being abused for unintended purposes and it needs help. -# -rule compress-subproperties ( properties * ) -{ - local all-subs ; - local matched-subs ; - local result ; - - for local p in $(properties) - { - if ! $(p:G) - { - # Expecting fully-gristed properties. - assert.variable-not-empty p:G ; - } - - if ! subfeature in $($(p:G).attributes) - { - local subs = [ sequence.insertion-sort - [ sequence.filter is-subproperty-of $(p) : $(properties) ] ] ; - - matched-subs += $(subs) ; - - local subvalues = -$(subs:G=:J=-) ; - subvalues ?= "" ; - result += $(p)$(subvalues) ; - } - else - { - all-subs += $(p) ; - } - } - assert.result true : set.equal $(all-subs) : $(matched-subs) ; - return $(result) ; -} - - -# Given an ungristed string, finds the longest prefix which is a top-level -# feature name followed by a dash, and return a pair consisting of the parts -# before and after that dash. More interesting than a simple split because -# feature names may contain dashes. -# -local rule split-top-feature ( feature-plus ) -{ - local e = [ regex.split $(feature-plus) - ] ; - local f = $(e[1]) ; - local v ; - while $(e) - { - if <$(f)> in $(.all-top-features) - { - v = $(f) $(e[2-]:J=-) ; - } - e = $(e[2-]) ; - f = $(f)-$(e[1]) ; - } - return $(v) ; -} - - -# Given a set of properties, add default values for features not represented in -# the set. -# -# Note: if there's an ordinary feature F1 and a composite feature F2 which -# includes some value for F1 and both feature have default values then the -# default value of F1 will be added (as opposed to the value in F2). This might -# not be the right idea, e.g. 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. -# -rule add-defaults ( properties * ) -{ - for local v in $(properties:G=) - { - if $(v) in $(properties) - { - errors.error add-defaults requires explicitly specified features, - but \"$(v)\" appears to be the value of an un-expanded implicit - feature ; - } - } - # We don't add default for elements with ":" inside. This catches: - # 1. Conditional properties --- we don't want <variant>debug:<define>DEBUG - # to be takes as specified value for <variant> - # 2. Free properties with ":" in values. We don't care, since free - # properties don't have defaults. - local xproperties = [ MATCH "^([^:]+)$" : $(properties) ] ; - local missing-top = [ set.difference $(.all-top-features) : $(xproperties:G) ] ; - local more = [ defaults $(missing-top) ] ; - properties += $(more) ; - xproperties += $(more) ; - - # Add defaults for subfeatures of features which are present. - for local p in $(xproperties) - { - local s = $($(p:G).subfeatures) ; - local f = [ utility.ungrist $(p:G) ] ; - local missing-subs = [ set.difference <$(f)-$(s)> : $(properties:G) ] ; - properties += [ defaults [ select-subfeatures $(p) : $(missing-subs) ] ] ; - } - - return $(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 needs to be resilient to the -# substitution of backslashes for slashes, since Jam, unbidden, sometimes swaps -# slash direction on NT. -# -rule split ( property-set ) -{ - local pieces = [ regex.split $(property-set) [\\/] ] ; - local result ; - - for local x in $(pieces) - { - if ( ! $(x:G) ) && $(result[-1]:G) - { - result = $(result[1--2]) $(result[-1])/$(x) ; - } - else - { - result += $(x) ; - } - } - - return $(result) ; -} - - -# Tests of module feature. -# -rule __test__ ( ) -{ - # Use a fresh copy of the feature module. - prepare-test feature-test-temp ; - - import assert ; - import errors : try catch ; - - # These are local rules and so must be explicitly reimported into the - # testing module. - import feature : extend-feature validate-feature select-subfeatures ; - - feature toolset : gcc : implicit ; - feature define : : free ; - feature runtime-link : dynamic static : symmetric ; - feature optimization : on off ; - feature variant : debug release profile : implicit composite symmetric ; - feature stdlib : native stlport ; - feature magic : : free ; - - compose <variant>debug : <define>_DEBUG <optimization>off ; - compose <variant>release : <define>NDEBUG <optimization>on ; - - assert.result dynamic static : values <runtime-link> ; - assert.result dynamic static : values runtime-link ; - - try ; - { - compose <variant>profile : <variant>profile ; - } - catch composite property <variant>profile cannot have itself as a component ; - - extend-feature toolset : msvc metrowerks ; - subfeature toolset gcc : version : 2.95.2 2.95.3 2.95.4 3.0 3.0.1 3.0.2 ; - - assert.true is-subvalue toolset : gcc : version : 2.95.3 ; - assert.false is-subvalue toolset : gcc : version : 1.1 ; - - assert.false is-subvalue toolset : msvc : version : 2.95.3 ; - assert.false is-subvalue toolset : : version : yabba ; - - feature yabba ; - subfeature yabba : version : dabba ; - assert.true is-subvalue yabba : : version : dabba ; - - subfeature toolset gcc : platform : linux cygwin : optional ; - - assert.result <toolset-gcc:version> - : select-subfeatures <toolset>gcc - : <toolset-gcc:version> - <toolset-msvc:version> - <toolset-version> - <stdlib> ; - - subfeature stdlib : version : 3 4 : optional ; - - assert.result <stdlib-version> - : select-subfeatures <stdlib>native - : <toolset-gcc:version> - <toolset-msvc:version> - <toolset-version> - <stdlib-version> ; - - assert.result <toolset>gcc <toolset-gcc:version>3.0.1 - : expand-subfeatures <toolset>gcc-3.0.1 ; - - assert.result <toolset>gcc <toolset-gcc:version>3.0.1 <toolset-gcc:platform>linux - : expand-subfeatures <toolset>gcc-3.0.1-linux ; - - assert.result <toolset>gcc <toolset-gcc:version>3.0.1 - : expand <toolset>gcc <toolset-gcc:version>3.0.1 ; - - assert.result <define>foo=x-y - : expand-subfeatures <define>foo=x-y ; - - assert.result <toolset>gcc <toolset-gcc:version>3.0.1 - : expand-subfeatures gcc-3.0.1 ; - - assert.result a c e - : get-values <x> : <x>a <y>b <x>c <y>d <x>e ; - - assert.result <toolset>gcc <toolset-gcc:version>3.0.1 - <variant>debug <define>_DEBUG <optimization>on - : expand gcc-3.0.1 debug <optimization>on ; - - assert.result <variant>debug <define>_DEBUG <optimization>on - : expand debug <optimization>on ; - - assert.result <optimization>on <variant>debug <define>_DEBUG - : expand <optimization>on debug ; - - assert.result <runtime-link>dynamic <optimization>on - : defaults <runtime-link> <define> <optimization> ; - - # Make sure defaults is resilient to missing grist. - assert.result <runtime-link>dynamic <optimization>on - : defaults runtime-link define optimization ; - - feature dummy : dummy1 dummy2 ; - subfeature dummy : subdummy : x y z : optional ; - - feature fu : fu1 fu2 : optional ; - subfeature fu : subfu : x y z : optional ; - subfeature fu : subfu2 : q r s ; - - assert.result optional : attributes <fu> ; - assert.result optional : attributes fu ; - - assert.result <runtime-link>static <define>foobar <optimization>on - <toolset>gcc:<define>FOO <toolset>gcc <variant>debug <stdlib>native - <dummy>dummy1 <toolset-gcc:version>2.95.2 - : add-defaults <runtime-link>static <define>foobar <optimization>on - <toolset>gcc:<define>FOO ; - - assert.result <runtime-link>static <define>foobar <optimization>on - <toolset>gcc:<define>FOO <fu>fu1 <toolset>gcc <variant>debug - <stdlib>native <dummy>dummy1 <fu-subfu2>q <toolset-gcc:version>2.95.2 - : add-defaults <runtime-link>static <define>foobar <optimization>on - <toolset>gcc:<define>FOO <fu>fu1 ; - - set-default <runtime-link> : static ; - assert.result <runtime-link>static : defaults <runtime-link> ; - - assert.result gcc-3.0.1 debug <optimization>on - : minimize [ expand gcc-3.0.1 debug <optimization>on <stdlib>native ] ; - - assert.result gcc-3.0.1 debug <runtime-link>dynamic - : minimize - [ expand gcc-3.0.1 debug <optimization>off <runtime-link>dynamic ] ; - - assert.result gcc-3.0.1 debug - : minimize [ expand gcc-3.0.1 debug <optimization>off ] ; - - assert.result debug <optimization>on - : minimize [ expand debug <optimization>on ] ; - - assert.result gcc-3.0 - : minimize <toolset>gcc <toolset-gcc:version>3.0 ; - - assert.result gcc-3.0 - : minimize <toolset-gcc:version>3.0 <toolset>gcc ; - - assert.result <x>y/z <a>b/c <d>e/f - : split <x>y/z/<a>b/c/<d>e/f ; - - assert.result <x>y/z <a>b/c <d>e/f - : split <x>y\\z\\<a>b\\c\\<d>e\\f ; - - assert.result a b c <d>e/f/g <h>i/j/k - : split a/b/c/<d>e/f/g/<h>i/j/k ; - - assert.result a b c <d>e/f/g <h>i/j/k - : split a\\b\\c\\<d>e\\f\\g\\<h>i\\j\\k ; - - # Test error checking. - - try ; - { - expand release <optimization>off <optimization>on ; - } - catch explicitly-specified values of non-free feature <optimization> conflict ; - - try ; - { - validate-feature <foobar> ; - } - catch unknown feature ; - - validate-value-string <toolset> gcc ; - validate-value-string <toolset> gcc-3.0.1 ; - - try ; - { - validate-value-string <toolset> digital_mars ; - } - catch \"digital_mars\" is not a known value of <toolset> ; - - try ; - { - feature foobar : : baz ; - } - catch unknown attributes: baz ; - - feature feature1 ; - try ; - { - feature feature1 ; - } - catch feature already defined: ; - - try ; - { - feature feature2 : : free implicit ; - } - catch free features cannot also be implicit ; - - try ; - { - feature feature3 : : free propagated ; - } - catch free features cannot be propagated ; - - try ; - { - implied-feature lackluster ; - } - catch \"lackluster\" is not a value of an implicit feature ; - - try ; - { - implied-subfeature <toolset> 3.0.1 ; - } - catch \"3.0.1\" is not a known subfeature value of <toolset> ; - - try ; - { - implied-subfeature <toolset> not-a-version : gcc ; - } - catch \"not-a-version\" is not a known subfeature value of <toolset>gcc ; - - # Leave a clean copy of the features module behind. - finish-test feature-test-temp ; -} |