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# (C) Copyright David Abrahams 2001. Permission to copy, use, modify, sell and
# distribute this software is granted provided this copyright notice appears in
# all copies. This software is provided "as is" without express or implied
# warranty, and with no claim as to its suitability for any purpose.
import "class" : is-instance ;
import errors ;
rule ungrist ( names * )
{
local result ;
for local name in $(names)
{
local stripped = [ MATCH ^<(.*)>$ : $(name) ] ;
if ! $(stripped)
{
errors.error "in ungrist" $(names) : $(name) is not of the form <.*> ;
}
result += $(stripped) ;
}
return $(result) ;
}
# Return the file of the caller of the rule that called caller-file.
rule caller-file ( )
{
local bt = [ BACKTRACE ] ;
return $(bt[9]) ;
}
# Returns the textual representation of argument. If it is a class
# instance, class its 'str' method. Otherwise, returns the argument.
rule str ( value )
{
if [ is-instance $(value) ]
{
return [ $(value).str ] ;
}
else
{
return $(value) ;
}
}
# Tests if 'a' is equal to 'b'. If 'a' is a class instance,
# calls its 'equal' method. Uses ordinary jam's comparison otherwise.
rule equal ( a b )
{
if [ is-instance $(a) ]
{
return [ $(a).equal $(b) ] ;
}
else
{
if $(a) = $(b)
{
return true ;
}
}
}
# Tests if 'a' is less than 'b'. If 'a' is a class instance,
# calls its 'less' method. Uses ordinary jam's comparison otherwise.
rule less ( a b )
{
if [ is-instance $(a) ]
{
return [ $(a).less $(b) ] ;
}
else
{
if $(a) < $(b)
{
return true ;
}
}
}
# For all elements of 'list' which do not already have 'suffix',
# add 'suffix'.
rule apply-default-suffix ( suffix : list * )
{
local result ;
for local i in $(list)
{
if $(i:S) = $(suffix)
{
result += $(i) ;
}
else
{
result += $(i)$(suffix) ;
}
}
return $(result) ;
}
# If 'name' contains a dot, returns the part before the last dot.
# If 'name' contains no dot, returns it unmodified.
rule basename ( name )
{
if $(name:S)
{
name = $(name:B) ;
}
return $(name) ;
}
local rule __test__ ( )
{
import assert ;
import "class" : new ;
assert.result foo bar : ungrist <foo> <bar> ;
assert.result 123 : str 123 ;
class test-class__
{
rule __init__ ( )
{
}
rule str ( )
{
return "str-test-class" ;
}
rule less ( a )
{
return "yes, of course!" ;
}
rule equal ( a )
{
return "not sure" ;
}
}
assert.result "str-test-class" : str [ new test-class__ ] ;
assert.true less 1 2 ;
assert.false less 2 1 ;
assert.result "yes, of course!" : less [ new test-class__ ] 1 ;
assert.true equal 1 1 ;
assert.false equal 1 2 ;
assert.result "not sure" : equal [ new test-class__ ] 1 ;
assert.result foo.lib foo.lib : apply-default-suffix .lib : foo.lib foo.lib ;
assert.result foo : basename foo ;
assert.result foo : basename foo.so ;
assert.result foo.so : basename foo.so.1 ;
}
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