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Conform to latest library requirements.

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Rene Rivera committed 2016-01-07 12:50:26 -06:00
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check/predef.jam
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@@ -1,202 +1,17 @@
# Copyright Rene Rivera 2015
# Copyright Rene Rivera 2016
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
# Defines rules that provide requirements based on checking
# conditions using Boost Predef definitions and version numbers.
# Hack, to reload check/predef.jam at its new location.
import modules ;
import project ;
import feature ;
import string ;
import toolset ;
import modules ;
import path ;
import "class" : new ;
import regex ;
# Create a project for our targets.
project.extension predef check ;
# Feature to pass check expressions to check programs.
feature.feature predef-expression : : free ;
# Checks the expressions and when used evaluates to the true-properties
# if the expressions are all true. Otherwise evaluates to the
# false-properties.
rule check ( expressions + : language ? : true-properties * : false-properties * )
local _loaded_ ;
for local _module_ in [ modules.peek modules : .loaded ]
{
# Default to C++ on the check context.
language ?= cpp ;
local project_target = [ project.target $(__name__) ] ;
project.push-current $(project_target) ;
local terms ;
local result ;
for expression in $(expressions)
if $(_module_) != "predef"
{
if $(expression:L) in "and" "or"
{
terms += $(expression:L) ;
}
else
{
# Create the check run if we don't have one yet.
local key = [ MD5 $(language)::$(expression) ] ;
if ! ( $(key) in $(_checks_) )
{
_checks_ += $(key) ;
_message_(/check/predef//predef_check_cc_$(key)) = $(expression) ;
check_target $(language) $(key) : [ change_term_to_def $(expression) ] ;
}
terms += /check/predef//predef_check_cc_$(key) ;
}
}
local instance = [ new check-expression-evaluator
$(terms) : $(true-properties) : $(false-properties) ] ;
result = <conditional>@$(instance).check ;
project.pop-current ;
return $(result) ;
}
# Checks the expressions and when used evaluates to <build>no
# if the expressions are all false. Otherwise evaluates to the
# nothing.
rule require ( expressions + : language ? )
{
return [ check $(expressions) : $(language) : : <build>no ] ;
}
#############################################################################
.c.ext = c ;
.cpp.ext = cpp ;
.objc.ext = m ;
.objcpp.ext = mm ;
# Check targets. Each needs to be compiled for different languages
# even though they are all the same source code.
local rule check_target ( language key : requirements * )
{
# Need to use absolute paths because we don't know the
# context of the invocation which affects where the paths
# originate from.
local predef_jam
= [ modules.binding $(__name__) ] ;
local source_path
= $(predef_jam:D)/predef_check_cc_as_$(language).$(.$(language).ext) ;
local include_path
= $(predef_jam:D)/../include ;
obj predef_check_cc_$(key)
: $(source_path)
: <include>$(include_path) $(requirements) ;
explicit predef_check_cc_$(key) ;
return predef_check_cc_$(key) ;
}
local rule change_term_to_def ( term )
{
local parts = [ regex.split $(term) " " ] ;
if $(parts[3])
{
local version_number = [ regex.split $(parts[3]) "[.]" ] ;
if ! $(version_number[3]) { version_number += "0" ; }
if ! $(version_number[3]) { version_number += "0" ; }
parts = $(parts[1-2]) BOOST_VERSION_NUMBER($(version_number:J=",")) ;
}
return <define>CHECK=\"$(parts:J=" ")\" ;
}
class check-expression-evaluator
{
import configure ;
rule __init__ ( expression + : true-properties * : false-properties * )
{
self.expression = $(expression) ;
self.true-properties = $(true-properties) ;
self.false-properties = $(false-properties) ;
}
rule check ( properties * )
{
local to-eval ;
local tokens = "and" "or" ;
# Go through the expression and: eval the target values,
# and normalize to a full expression.
for local term in $(self.expression)
{
if ! ( $(term:L) in $(tokens) )
{
# A value is a target reference that will evan to "true"
# or "false".
if $(to-eval[-1]:L) && ! ( $(to-eval[-1]:L) in $(tokens) )
{
# Default to "and" operation.
to-eval += "and" ;
}
local message = [ modules.peek predef : _message_($(term)) ] ;
if [ configure.builds $(term) : $(properties) : $(message) ]
{
to-eval += "true" ;
}
else
{
to-eval += "false" ;
}
}
else
{
to-eval += $(term) ;
}
}
# Eval full the expression.
local eval-result = [ eval $(to-eval) ] ;
# And resolve true/false properties.
if $(eval-result) = "true"
{
return $(self.true-properties) ;
}
else
{
return $(self.false-properties) ;
}
}
rule eval ( e * )
{
local r ;
if $(e[1]) && $(e[2]) && $(e[3])
{
if $(e[2]) = "and"
{
if $(e[1]) = "true" && $(e[3]) = "true"
{
r = [ eval "true" $(e[4-]) ] ;
}
else
{
r = [ eval "false" $(e[4-]) ] ;
}
}
else if $(e[2]) = "or"
{
if $(e[1]) = "true" || $(e[3]) = "true"
{
r = [ eval "true" $(e[4-]) ] ;
}
else
{
r = [ eval "false" $(e[4-]) ] ;
}
}
}
else
{
r = $(e[1]) ;
}
return $(r) ;
_loaded_ += $(_module_) ;
}
}
modules.poke modules : .loaded : $(_loaded_) ;
import ../tools/check/predef ;