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Refactoring.

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* new/targets.jam
   (basic-target.final-properties): New rule, extracted from 'generate'.
   (basic-target.generate-sources): New rule, extracted from 'generate'.
   (basic-target.requirements): Gone.


[SVN r17684]
This commit is contained in:
Vladimir Prus
2003-02-28 07:19:31 +00:00
parent e69e444e5d
commit d9e2cafc70
1 changed files with 68 additions and 53 deletions
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121
src/build/targets.jam
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@@ -496,59 +496,80 @@ rule basic-target ( name : project
[ $(property-set).raw ] ] ] ;
}
}
# Generates sources. Calls 'construct'
# This method should not be overriden.
# Determine and return properties which should be used for
# building when given 'build-request'. This includes refining
# build request with requirements, evaluating conditionals,
# generating depenendecies and running actions for features.
local rule final-properties ( build-request )
{
local rproperties = [ $(build-request).refine $(self.requirements) ] ;
if $(rproperties[1]) != "@error"
{
# TODO: issue a warning when requirements change properties, but
# link-compatibility is still not broken.
# Generate dependency requirements. Here, we generate only
# denepdency requirements specified for this targets. Dependency
# requirements may also code from dependencies. However, when they
# come from dependencies, the value is not target id, but rather
# virtual target names, so generators.construct can use them.
rproperties = [ $(rproperties).evaluate-conditionals ] ;
rproperties =
[ targets.generate-dependencies $(rproperties) : $(self.project)
: $(rproperties) ] ;
# TODO: this line might cause target's properties to be
# unqual to project's reference properties. As the
# result, we create per-target bin directory while
# it's not really needed.
rproperties = [ $(rproperties).run-actions ] ;
}
return $(rproperties) ;
}
# Generate all sources for this target
local rule generate-sources ( property-set )
{
local source-targets ;
for local s in $(self.sources)
{
# Try treating this source as reference to main target
local more-targets =
[ targets.generate $(s) : $(self.project)
: $(property-set) ] ;
if $(more-targets)
{
source-targets += $(more-targets) ;
}
else
{
# Just a source file
source-targets +=
[ virtual-target.from-file $(s) : $(self.project) ] ;
}
}
return $(source-targets) ;
}
# Determines final build properties, generates sources,
# and calls 'construct'. This method should not be
# overridden.
rule generate ( property-set )
{
if ! $(self.generated.$(property-set))
{
local rproperties = [ $(property-set).refine $(self.requirements) ] ;
{
local rproperties = [ final-properties $(property-set) ] ;
if $(rproperties[1]) != "@error"
{
# TODO: issue a warning when requirements change properties, but
# link-compatibility is still not broken.
# Generate dependency requirements. Here, we generate only
# denepdency requirements specified for this targets. Dependency
# requirements may also code from dependencies. However, when they
# come from dependencies, the value is not target id, but rather
# virtual target names, so generators.construct can use them.
rproperties = [ $(rproperties).evaluate-conditionals ] ;
local xproperties =
[ targets.generate-dependencies $(rproperties) : $(self.project)
: $(rproperties) ] ;
local source-targets ;
for local s in $(self.sources)
{
# Try treating this source as reference to main target
local more-targets =
[ targets.generate $(s) : $(self.project) : $(property-set) ] ;
if $(more-targets)
{
source-targets += $(more-targets) ;
}
else
{
# Just a source file
source-targets += [ virtual-target.from-file $(s) : $(self.project) ] ;
}
}
# TODO: this line might cause target's properties to be
# unqual to project's reference properties. As the
# result, we create per-target bin directory while
# it's not really needed.
xproperties = [ $(xproperties).run-actions ] ;
{
local source-targets = [ generate-sources $(rproperties) ] ;
self.generated.$(property-set) =
[ construct $(source-targets) : $(xproperties) ] ;
[ construct $(source-targets) : $(rproperties) ] ;
# Apply use requirement of this target to all generated
# virtual targets.
@@ -578,12 +599,6 @@ rule basic-target ( name : project
{
errors.error "method should be defined in derived classes" ;
}
# Returns the requirements for this target
rule requirements ( )
{
return $(self.requirements) ;
}
}
class basic-target : abstract-target ;