From 38b1c84b6b34a08ee568999e762422ff195b1d27 Mon Sep 17 00:00:00 2001 From: bg Date: Wed, 14 Jul 2010 20:03:43 +0200 Subject: [PATCH] adding forgotten Make library (__gmsl) --- __gmsl | 837 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 837 insertions(+) create mode 100644 __gmsl diff --git a/__gmsl b/__gmsl new file mode 100644 index 0000000..96ae750 --- /dev/null +++ b/__gmsl @@ -0,0 +1,837 @@ +# ---------------------------------------------------------------------------- +# +# GNU Make Standard Library (GMSL) +# +# A library of functions to be used with GNU Make's $(call) that +# provides functionality not available in standard GNU Make. +# +# Copyright (c) 2005-2007 John Graham-Cumming +# +# This file is part of GMSL +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# +# Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# Neither the name of the John Graham-Cumming nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +# ---------------------------------------------------------------------------- + +# This is the GNU Make Standard Library version number as a list with +# three items: major, minor, revision + +gmsl_version := 1 0 9 + +# Used to output warnings and error from the library, it's possible to +# disable any warnings or errors by overriding these definitions +# manually or by setting GMSL_NO_WARNINGS or GMSL_NO_ERRORS + +__gmsl_name := GNU Make Standard Library +__gmsl_warning = $(warning $(__gmsl_name): $1) +__gmsl_error = $(error $(__gmsl_name): $1) + +ifdef GMSL_NO_WARNINGS +__gmsl_warning := +endif +ifdef GMSL_NO_ERRORS +__gmsl_error := +endif + +# If GMSL_TRACE is enabled then calls to the library functions are +# traced to stdout using warning messages with their arguments + +ifdef GMSL_TRACE +__gmsl_tr1 = $(warning $0('$1')) +__gmsl_tr2 = $(warning $0('$1','$2')) +__gmsl_tr3 = $(warning $0('$1','$2','$3')) +else +__gmsl_tr1 := +__gmsl_tr2 := +__gmsl_tr3 := +endif + +# Figure out whether we have $(eval) or not (GNU Make 3.80 and above) +# if we do not then output a warning message, if we do then some +# functions will be enabled. + +__gmsl_have_eval := $(false) +__gmsl_ignore := $(eval __gmsl_have_eval := $(true)) + +# See if we have $(lastword) (GNU Make 3.81 and above) + +__gmsl_have_lastword := $(lastword $(false) $(true)) + +# See if we have native or and and (GNU Make 3.81 and above) + +__gmsl_have_or := $(if $(filter-out undefined, \ + $(origin or)),$(call or,$(true),$(false))) +__gmsl_have_and := $(if $(filter-out undefined, \ + $(origin and)),$(call and,$(true),$(true))) + +ifneq ($(__gmsl_have_eval),$(true)) +$(call __gmsl_warning,GNU Make $(MAKE_VERSION) does not support $$(eval): some functions disabled) +endif + +# ---------------------------------------------------------------------------- +# Function: gmsl_compatible +# Arguments: List containing the desired library version number (maj min rev) +# Returns: $(true) if this version of the library is compatible +# with the requested version number, otherwise $(false) +# ---------------------------------------------------------------------------- +gmsl_compatible = $(strip \ + $(if $(call gt,$(word 1,$1),$(word 1,$(gmsl_version))), \ + $(false), \ + $(if $(call lt,$(word 1,$1),$(word 1,$(gmsl_version))), \ + $(true), \ + $(if $(call gt,$(word 2,$1),$(word 2,$(gmsl_version))), \ + $(false), \ + $(if $(call lt,$(word 2,$1),$(word 2,$(gmsl_version))), \ + $(true), \ + $(call lte,$(word 3,$1),$(word 3,$(gmsl_version)))))))) + +# ########################################################################### +# LOGICAL OPERATORS +# ########################################################################### + +# not is defined in gmsl + +# ---------------------------------------------------------------------------- +# Function: and +# Arguments: Two boolean values +# Returns: Returns $(true) if both of the booleans are true +# ---------------------------------------------------------------------------- +ifneq ($(__gmsl_have_and),$(true)) +and = $(__gmsl_tr2)$(if $1,$(if $2,$(true),$(false)),$(false)) +endif + +# ---------------------------------------------------------------------------- +# Function: or +# Arguments: Two boolean values +# Returns: Returns $(true) if either of the booleans is true +# ---------------------------------------------------------------------------- +ifneq ($(__gmsl_have_or),$(true)) +or = $(__gmsl_tr2)$(if $1$2,$(true),$(false)) +endif + +# ---------------------------------------------------------------------------- +# Function: xor +# Arguments: Two boolean values +# Returns: Returns $(true) if exactly one of the booleans is true +# ---------------------------------------------------------------------------- +xor = $(__gmsl_tr2)$(if $1,$(if $2,$(false),$(true)),$(if $2,$(true),$(false))) + +# ---------------------------------------------------------------------------- +# Function: nand +# Arguments: Two boolean values +# Returns: Returns value of 'not and' +# ---------------------------------------------------------------------------- +nand = $(__gmsl_tr2)$(if $1,$(if $2,$(false),$(true)),$(true)) + +# ---------------------------------------------------------------------------- +# Function: nor +# Arguments: Two boolean values +# Returns: Returns value of 'not or' +# ---------------------------------------------------------------------------- +nor = $(__gmsl_tr2)$(if $1$2,$(false),$(true)) + +# ---------------------------------------------------------------------------- +# Function: xnor +# Arguments: Two boolean values +# Returns: Returns value of 'not xor' +# ---------------------------------------------------------------------------- +xnor =$(__gmsl_tr2)$(if $1,$(if $2,$(true),$(false)),$(if $2,$(false),$(true))) + +# ########################################################################### +# LIST MANIPULATION FUNCTIONS +# ########################################################################### + +# ---------------------------------------------------------------------------- +# Function: first (same as LISP's car, or head) +# Arguments: 1: A list +# Returns: Returns the first element of a list +# ---------------------------------------------------------------------------- +first = $(__gmsl_tr1)$(firstword $1) + +# ---------------------------------------------------------------------------- +# Function: last +# Arguments: 1: A list +# Returns: Returns the last element of a list +# ---------------------------------------------------------------------------- +ifeq ($(__gmsl_have_lastword),$(true)) +last = $(__gmsl_tr1)$(lastword $1) +else +last = $(__gmsl_tr1)$(if $1,$(word $(words $1),$1)) +endif + +# ---------------------------------------------------------------------------- +# Function: rest (same as LISP's cdr, or tail) +# Arguments: 1: A list +# Returns: Returns the list with the first element removed +# ---------------------------------------------------------------------------- +rest = $(__gmsl_tr1)$(wordlist 2,$(words $1),$1) + +# ---------------------------------------------------------------------------- +# Function: chop +# Arguments: 1: A list +# Returns: Returns the list with the last element removed +# ---------------------------------------------------------------------------- +chop = $(__gmsl_tr1)$(wordlist 2,$(words $1),x $1) + +# ---------------------------------------------------------------------------- +# Function: map +# Arguments: 1: Name of function to $(call) for each element of list +# 2: List to iterate over calling the function in 1 +# Returns: The list after calling the function on each element +# ---------------------------------------------------------------------------- +map = $(__gmsl_tr2)$(strip $(foreach a,$2,$(call $1,$a))) + +# ---------------------------------------------------------------------------- +# Function: pairmap +# Arguments: 1: Name of function to $(call) for each pair of elements +# 2: List to iterate over calling the function in 1 +# 3: Second list to iterate over calling the function in 1 +# Returns: The list after calling the function on each pair of elements +# ---------------------------------------------------------------------------- +pairmap = $(strip $(__gmsl_tr3)\ + $(if $2$3,$(call $1,$(call first,$2),$(call first,$3)) \ + $(call pairmap,$1,$(call rest,$2),$(call rest,$3)))) + +# ---------------------------------------------------------------------------- +# Function: leq +# Arguments: 1: A list to compare against... +# 2: ...this list +# Returns: Returns $(true) if the two lists are identical +# ---------------------------------------------------------------------------- +leq = $(__gmsl_tr2)$(strip $(if $(call seq,$(words $1),$(words $2)), \ + $(call __gmsl_list_equal,$1,$2),$(false))) + +__gmsl_list_equal = $(if $(strip $1), \ + $(if $(call seq,$(call first,$1),$(call first,$2)), \ + $(call __gmsl_list_equal, \ + $(call rest,$1), \ + $(call rest,$2)), \ + $(false)), \ + $(true)) + +# ---------------------------------------------------------------------------- +# Function: lne +# Arguments: 1: A list to compare against... +# 2: ...this list +# Returns: Returns $(true) if the two lists are different +# ---------------------------------------------------------------------------- +lne = $(__gmsl_tr2)$(call not,$(call leq,$1,$2)) + +# ---------------------------------------------------------------------------- +# Function: reverse +# Arguments: 1: A list to reverse +# Returns: The list with its elements in reverse order +# ---------------------------------------------------------------------------- +reverse =$(__gmsl_tr1)$(strip $(if $1,$(call reverse,$(call rest,$1)) \ + $(call first,$1))) + +# ---------------------------------------------------------------------------- +# Function: uniq +# Arguments: 1: A list from which to remove repeated elements +# Returns: The list with duplicate elements removed without reordering +# ---------------------------------------------------------------------------- +uniq = $(strip $(__gmsl_tr1)$(if $1,$(call uniq,$(call chop,$1)) \ + $(if $(filter $(call last,$1),$(call chop,$1)),,$(call last,$1)))) + +# ---------------------------------------------------------------------------- +# Function: length +# Arguments: 1: A list +# Returns: The number of elements in the list +# ---------------------------------------------------------------------------- +length = $(__gmsl_tr1)$(words $1) + +# ########################################################################### +# STRING MANIPULATION FUNCTIONS +# ########################################################################### + +# Helper function that translates any GNU Make 'true' value (i.e. a +# non-empty string) to our $(true) + +__gmsl_make_bool = $(if $(strip $1),$(true),$(false)) + +# ---------------------------------------------------------------------------- +# Function: seq +# Arguments: 1: A string to compare against... +# 2: ...this string +# Returns: Returns $(true) if the two strings are identical +# ---------------------------------------------------------------------------- +seq = $(__gmsl_tr2)$(if $(filter-out xx,x$(subst $1,,$2)$(subst $2,,$1)x),$(false),$(true)) + +# ---------------------------------------------------------------------------- +# Function: sne +# Arguments: 1: A string to compare against... +# 2: ...this string +# Returns: Returns $(true) if the two strings are not the same +# ---------------------------------------------------------------------------- +sne = $(__gmsl_tr2)$(call not,$(call seq,$1,$2)) + +# ---------------------------------------------------------------------------- +# Function: split +# Arguments: 1: The character to split on +# 2: A string to split +# Returns: Splits a string into a list separated by spaces at the split +# character in the first argument +# ---------------------------------------------------------------------------- +split = $(__gmsl_tr2)$(strip $(subst $1, ,$2)) + +# ---------------------------------------------------------------------------- +# Function: merge +# Arguments: 1: The character to put between fields +# 2: A list to merge into a string +# Returns: Merges a list into a single string, list elements are separated +# by the character in the first argument +# ---------------------------------------------------------------------------- +merge = $(__gmsl_tr2)$(strip $(if $2, \ + $(if $(call seq,1,$(words $2)), \ + $2,$(call first,$2)$1$(call merge,$1,$(call rest,$2))))) + +ifdef __gmsl_have_eval +# ---------------------------------------------------------------------------- +# Function: tr +# Arguments: 1: The list of characters to translate from +# 2: The list of characters to translate to +# 3: The text to translate +# Returns: Returns the text after translating characters +# ---------------------------------------------------------------------------- +tr = $(__gmsl_tr3)$(strip $(eval __gmsl_t := $3) \ + $(foreach c, \ + $(join $(addsuffix :,$1),$2), \ + $(eval __gmsl_t := \ + $(subst $(word 1,$(subst :, ,$c)),$(word 2,$(subst :, ,$c)), \ + $(__gmsl_t))))$(__gmsl_t)) + +# Common character classes for use with the tr function. Each of +# these is actually a variable declaration and must be wrapped with +# $() or ${} to be used. + +[A-Z] := A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # +[a-z] := a b c d e f g h i j k l m n o p q r s t u v w x y z # +[0-9] := 0 1 2 3 4 5 6 7 8 9 # +[A-F] := A B C D E F # + +# ---------------------------------------------------------------------------- +# Function: uc +# Arguments: 1: Text to upper case +# Returns: Returns the text in upper case +# ---------------------------------------------------------------------------- +uc = $(__gmsl_tr1)$(call tr,$([a-z]),$([A-Z]),$1) + +# ---------------------------------------------------------------------------- +# Function: lc +# Arguments: 1: Text to lower case +# Returns: Returns the text in lower case +# ---------------------------------------------------------------------------- +lc = $(__gmsl_tr1)$(call tr,$([A-Z]),$([a-z]),$1) + +# ---------------------------------------------------------------------------- +# Function: strlen +# Arguments: 1: A string +# Returns: Returns the length of the string +# ---------------------------------------------------------------------------- +__gmsl_characters := A B C D E F G H I J K L M N O P Q R S T U V W X Y Z +__gmsl_characters += a b c d e f g h i j k l m n o p q r s t u v w y z +__gmsl_characters += 0 1 2 3 4 5 6 7 8 9 +__gmsl_characters += ` ~ ! @ \# $$ % ^ & * ( ) - _ = + +__gmsl_characters += { } [ ] \ : ; ' " < > , . / ? | + +# Aside: if you read the above you might think that the lower-case +# letter x is missing, and that that's an error. It is missing, but +# it's not an error. __gmsl_characters is used by the strlen +# function. strlen works by transforming every character and space +# into the letter x and then counting the x's. Since there's no need +# to transform x into x I omitted it. + +# This results in __gmsl_space containing just a space + +__gmsl_space := +__gmsl_space += + +strlen = $(strip $(eval __temp := $(subst $(__gmsl_space),x,$1))$(foreach a,$(__gmsl_characters),$(eval __temp := $$(subst $$a,x,$(__temp))))$(eval __temp := $(subst x,x ,$(__temp)))$(words $(__temp))) + +# This results in __gmsl_newline containing just a newline + +define __gmsl_newline + + +endef + +# This results in __gmsl_tab containing a tab + +__gmsl_tab := # + +# ---------------------------------------------------------------------------- +# Function: substr +# Arguments: 1: A string +# 2: Start position (first character is 1) +# 3: End position (inclusive) +# Returns: A substring. +# Note: The string in $1 must not contain a § +# ---------------------------------------------------------------------------- + +substr = $(strip $(eval __temp := $$(subst $$(__gmsl_space),§ ,$$1))$(foreach a,$(__gmsl_characters),$(eval __temp := $$(subst $$a,$$a$$(__gmsl_space),$(__temp))))$(eval __temp := $(wordlist $2,$3,$(__temp))))$(subst §,$(__gmsl_space),$(subst $(__gmsl_space),,$(__temp))) + +endif # __gmsl_have_eval + +# ########################################################################### +# SET MANIPULATION FUNCTIONS +# ########################################################################### + +# Sets are represented by sorted, deduplicated lists. To create a set +# from a list use set_create, or start with the empty_set and +# set_insert individual elements + +# This is the empty set +empty_set := + +# ---------------------------------------------------------------------------- +# Function: set_create +# Arguments: 1: A list of set elements +# Returns: Returns the newly created set +# ---------------------------------------------------------------------------- +set_create = $(__gmsl_tr1)$(sort $1) + +# ---------------------------------------------------------------------------- +# Function: set_insert +# Arguments: 1: A single element to add to a set +# 2: A set +# Returns: Returns the set with the element added +# ---------------------------------------------------------------------------- +set_insert = $(__gmsl_tr2)$(sort $1 $2) + +# ---------------------------------------------------------------------------- +# Function: set_remove +# Arguments: 1: A single element to remove from a set +# 2: A set +# Returns: Returns the set with the element removed +# ---------------------------------------------------------------------------- +set_remove = $(__gmsl_tr2)$(filter-out $1,$2) + +# ---------------------------------------------------------------------------- +# Function: set_is_member +# Arguments: 1: A single element +# 2: A set +# Returns: Returns $(true) if the element is in the set +# ---------------------------------------------------------------------------- +set_is_member = $(if $(filter $1,$2),$(true),$(false)) + +# ---------------------------------------------------------------------------- +# Function: set_union +# Arguments: 1: A set +# 2: Another set +# Returns: Returns the union of the two sets +# ---------------------------------------------------------------------------- +set_union = $(sort $1 $2) + +# ---------------------------------------------------------------------------- +# Function: set_intersection +# Arguments: 1: A set +# 2: Another set +# Returns: Returns the intersection of the two sets +# ---------------------------------------------------------------------------- +set_intersection = $(filter $1,$2) + +# ---------------------------------------------------------------------------- +# Function: set_is_subset +# Arguments: 1: A set +# 2: Another set +# Returns: Returns $(true) if the first set is a subset of the second +# ---------------------------------------------------------------------------- +set_is_subset = $(call set_equal,$(call set_intersection,$1,$2),$1) + +# ---------------------------------------------------------------------------- +# Function: set_equal +# Arguments: 1: A set +# 2: Another set +# Returns: Returns $(true) if the two sets are identical +# ---------------------------------------------------------------------------- +set_equal = $(call seq,$1,$2) + +# ########################################################################### +# ARITHMETIC LIBRARY +# ########################################################################### + +# Integers a represented by lists with the equivalent number of x's. +# For example the number 4 is x x x x. The maximum integer that the +# library can handle as _input_ is __gmsl_input_int which is defined +# here as 65536 + +__gmsl_sixteen := x x x x x x x x x x x x x x x x +__gmsl_input_int := $(foreach a,$(__gmsl_sixteen), \ + $(foreach b,$(__gmsl_sixteen), \ + $(foreach c,$(__gmsl_sixteen), \ + $(__gmsl_sixteen))))) + +# ---------------------------------------------------------------------------- +# Function: int_decode +# Arguments: 1: A number of x's representation +# Returns: Returns the integer for human consumption that is represented +# by the string of x's +# ---------------------------------------------------------------------------- +int_decode = $(__gmsl_tr1)$(words $1) + +# ---------------------------------------------------------------------------- +# Function: int_encode +# Arguments: 1: A number in human-readable integer form +# Returns: Returns the integer encoded as a string of x's +# ---------------------------------------------------------------------------- +int_encode = $(__gmsl_tr1)$(wordlist 1,$1,$(__gmsl_input_int)) + +# The arithmetic library functions come in two forms: one form of each +# function takes integers as arguments and the other form takes the +# encoded form (x's created by a call to int_encode). For example, +# there are two plus functions: +# +# plus Called with integer arguments and returns an integer +# int_plus Called with encoded arguments and returns an encoded result +# +# plus will be slower than int_plus because its arguments and result +# have to be translated between the x's format and integers. If doing +# a complex calculation use the int_* forms with a single encoding of +# inputs and single decoding of the output. For simple calculations +# the direct forms can be used. + +# Helper function used to wrap an int_* function into a function that +# takes a pair of integers, perhaps a function and returns an integer +# result +__gmsl_int_wrap = $(call int_decode,$(call $1,$(call int_encode,$2),$(call int_encode,$3))) +__gmsl_int_wrap1 = $(call int_decode,$(call $1,$(call int_encode,$2))) +__gmsl_int_wrap2 = $(call $1,$(call int_encode,$2),$(call int_encode,$3)) + +# ---------------------------------------------------------------------------- +# Function: int_plus +# Arguments: 1: A number in x's representation +# 2: Another number in x's represntation +# Returns: Returns the sum of the two numbers in x's representation +# ---------------------------------------------------------------------------- +int_plus = $(strip $(__gmsl_tr2)$1 $2) + +# ---------------------------------------------------------------------------- +# Function: plus (wrapped version of int_plus) +# Arguments: 1: An integer +# 2: Another integer +# Returns: Returns the sum of the two integers +# ---------------------------------------------------------------------------- +plus = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_plus,$1,$2) + +# ---------------------------------------------------------------------------- +# Function: int_subtract +# Arguments: 1: A number in x's representation +# 2: Another number in x's represntation +# Returns: Returns the difference of the two numbers in x's representation, +# or outputs an error on a numeric underflow +# ---------------------------------------------------------------------------- +int_subtract = $(strip $(__gmsl_tr2)$(if $(call int_gte,$1,$2), \ + $(filter-out xx,$(join $1,$2)), \ + $(call __gmsl_warning,Subtraction underflow))) + +# ---------------------------------------------------------------------------- +# Function: subtract (wrapped version of int_subtract) +# Arguments: 1: An integer +# 2: Another integer +# Returns: Returns the difference of the two integers, +# or outputs an error on a numeric underflow +# ---------------------------------------------------------------------------- +subtract = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_subtract,$1,$2) + +# ---------------------------------------------------------------------------- +# Function: int_multiply +# Arguments: 1: A number in x's representation +# 2: Another number in x's represntation +# Returns: Returns the product of the two numbers in x's representation +# ---------------------------------------------------------------------------- +int_multiply = $(strip $(__gmsl_tr2)$(foreach a,$1,$2)) + +# ---------------------------------------------------------------------------- +# Function: multiply (wrapped version of int_multiply) +# Arguments: 1: An integer +# 2: Another integer +# Returns: Returns the product of the two integers +# ---------------------------------------------------------------------------- +multiply = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_multiply,$1,$2) + +# ---------------------------------------------------------------------------- +# Function: int_divide +# Arguments: 1: A number in x's representation +# 2: Another number in x's represntation +# Returns: Returns the result of integer division of argument 1 divided +# by argument 2 in x's representation +# ---------------------------------------------------------------------------- +int_divide = $(__gmsl_tr2)$(strip $(if $2, \ + $(if $(call int_gte,$1,$2), \ + x $(call int_divide,$(call int_subtract,$1,$2),$2),), \ + $(call __gmsl_error,Division by zero))) + +# ---------------------------------------------------------------------------- +# Function: divide (wrapped version of int_divide) +# Arguments: 1: An integer +# 2: Another integer +# Returns: Returns the integer division of the first argument by the second +# ---------------------------------------------------------------------------- +divide = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_divide,$1,$2) + +# ---------------------------------------------------------------------------- +# Function: int_max, int_min +# Arguments: 1: A number in x's representation +# 2: Another number in x's represntation +# Returns: Returns the maximum or minimum of its arguments in x's +# representation +# ---------------------------------------------------------------------------- +int_max = $(__gmsl_tr2)$(subst xx,x,$(join $1,$2)) +int_min = $(__gmsl_tr2)$(subst xx,x,$(filter xx,$(join $1,$2))) + +# ---------------------------------------------------------------------------- +# Function: max, min +# Arguments: 1: An integer +# 2: Another integer +# Returns: Returns the maximum or minimum of its integer arguments +# ---------------------------------------------------------------------------- +max = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_max,$1,$2) +min = $(__gmsl_tr2)$(call __gmsl_int_wrap,int_min,$1,$2) + +# ---------------------------------------------------------------------------- +# Function: int_gt, int_gte, int_lt, int_lte, int_eq, int_ne +# Arguments: Two x's representation numbers to be compared +# Returns: $(true) or $(false) +# +# int_gt First argument greater than second argument +# int_gte First argument greater than or equal to second argument +# int_lt First argument less than second argument +# int_lte First argument less than or equal to second argument +# int_eq First argument is numerically equal to the second argument +# int_ne First argument is not numerically equal to the second argument +# ---------------------------------------------------------------------------- +int_gt = $(__gmsl_tr2)$(call __gmsl_make_bool, \ + $(filter-out $(words $2), \ + $(words $(call int_max,$1,$2)))) +int_gte = $(__gmsl_tr2)$(call __gmsl_make_bool, \ + $(call int_gt,$1,$2)$(call int_eq,$1,$2)) +int_lt = $(__gmsl_tr2)$(call __gmsl_make_bool, \ + $(filter-out $(words $1), \ + $(words $(call int_max,$1,$2)))) +int_lte = $(__gmsl_tr2)$(call __gmsl_make_bool, \ + $(call int_lt,$1,$2)$(call int_eq,$1,$2)) +int_eq = $(__gmsl_tr2)$(call __gmsl_make_bool, \ + $(filter $(words $1),$(words $2))) +int_ne = $(__gmsl_tr2)$(call __gmsl_make_bool, \ + $(filter-out $(words $1),$(words $2))) + +# ---------------------------------------------------------------------------- +# Function: gt, gte, lt, lte, eq, ne +# Arguments: Two integers to be compared +# Returns: $(true) or $(false) +# +# gt First argument greater than second argument +# gte First argument greater than or equal to second argument +# lt First argument less than second argument +# lte First argument less than or equal to second argument +# eq First argument is numerically equal to the second argument +# ne First argument is not numerically equal to the second argument +# ---------------------------------------------------------------------------- +gt = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_gt,$1,$2) +gte = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_gte,$1,$2) +lt = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_lt,$1,$2) +lte = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_lte,$1,$2) +eq = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_eq,$1,$2) +ne = $(__gmsl_tr2)$(call __gmsl_int_wrap2,int_ne,$1,$2) + +# increment adds 1 to its argument, decrement subtracts 1. Note that +# decrement does not range check and hence will not underflow, but +# will incorrectly say that 0 - 1 = 0 + +# ---------------------------------------------------------------------------- +# Function: int_inc +# Arguments: 1: A number in x's representation +# Returns: The number incremented by 1 in x's representation +# ---------------------------------------------------------------------------- +int_inc = $(strip $(__gmsl_tr1)$1 x) + +# ---------------------------------------------------------------------------- +# Function: inc +# Arguments: 1: An integer +# Returns: The argument incremented by 1 +# ---------------------------------------------------------------------------- +inc = $(__gmsl_tr1)$(call __gmsl_int_wrap1,int_inc,$1) + +# ---------------------------------------------------------------------------- +# Function: int_dec +# Arguments: 1: A number in x's representation +# Returns: The number decremented by 1 in x's representation +# ---------------------------------------------------------------------------- +int_dec = $(__gmsl_tr1)$(strip $(if $(call sne,0,$(words $1)), \ + $(wordlist 2,$(words $1),$1), \ + $(call __gmsl_warning,Decrement underflow))) + +# ---------------------------------------------------------------------------- +# Function: dec +# Arguments: 1: An integer +# Returns: The argument decremented by 1 +# ---------------------------------------------------------------------------- +dec = $(__gmsl_tr1)$(call __gmsl_int_wrap1,int_dec,$1) + +# double doubles its argument, and halve halves it + +# ---------------------------------------------------------------------------- +# Function: int_double +# Arguments: 1: A number in x's representation +# Returns: The number doubled (i.e. * 2) and returned in x's representation +# ---------------------------------------------------------------------------- +int_double = $(strip $(__gmsl_tr1)$1 $1) + +# ---------------------------------------------------------------------------- +# Function: double +# Arguments: 1: An integer +# Returns: The integer times 2 +# ---------------------------------------------------------------------------- +double = $(__gmsl_tr1)$(call __gmsl_int_wrap1,int_double,$1) + +# ---------------------------------------------------------------------------- +# Function: int_halve +# Arguments: 1: A number in x's representation +# Returns: The number halved (i.e. / 2) and returned in x's representation +# ---------------------------------------------------------------------------- +int_halve = $(__gmsl_tr1)$(strip $(subst xx,x,$(filter-out xy x y, \ + $(join $1,$(foreach a,$1,y x))))) + +# ---------------------------------------------------------------------------- +# Function: halve +# Arguments: 1: An integer +# Returns: The integer divided by 2 +# ---------------------------------------------------------------------------- +halve = $(__gmsl_tr1)$(call __gmsl_int_wrap1,int_halve,$1) + +ifdef __gmsl_have_eval +# ########################################################################### +# ASSOCIATIVE ARRAYS +# ########################################################################### + +# ---------------------------------------------------------------------------- +# Function: set +# Arguments: 1: Name of associative array +# 2: The key value to associate +# 3: The value associated with the key +# Returns: None +# ---------------------------------------------------------------------------- +set = $(__gmsl_tr3)$(eval __gmsl_aa_$1_$2 = $3) + +# ---------------------------------------------------------------------------- +# Function: get +# Arguments: 1: Name of associative array +# 2: The key to retrieve +# Returns: The value stored in the array for that key +# ---------------------------------------------------------------------------- +get = $(strip $(__gmsl_tr2)$(if $(filter-out undefined,$(origin __gmsl_aa_$1_$2)), \ + $(__gmsl_aa_$1_$2))) + +# ---------------------------------------------------------------------------- +# Function: keys +# Arguments: 1: Name of associative array +# Returns: Returns a list of all defined keys in the array +# ---------------------------------------------------------------------------- +keys = $(__gmsl_tr1)$(sort $(patsubst __gmsl_aa_$1_%,%, \ + $(filter __gmsl_aa_$1_%,$(.VARIABLES)))) + +# ---------------------------------------------------------------------------- +# Function: defined +# Arguments: 1: Name of associative array +# 2: The key to test +# Returns: Returns true if the key is defined (i.e. not empty) +# ---------------------------------------------------------------------------- +defined = $(__gmsl_tr2)$(call sne,$(call get,$1,$2),) + +endif # __gmsl_have_eval + +ifdef __gmsl_have_eval +# ########################################################################### +# NAMED STACKS +# ########################################################################### + +# ---------------------------------------------------------------------------- +# Function: push +# Arguments: 1: Name of stack +# 2: Value to push onto the top of the stack (must not contain +# a space) +# Returns: None +# ---------------------------------------------------------------------------- +push = $(__gmsl_tr2)$(eval __gmsl_stack_$1 := $2 $(if $(filter-out undefined,\ + $(origin __gmsl_stack_$1)),$(__gmsl_stack_$1))) + +# ---------------------------------------------------------------------------- +# Function: pop +# Arguments: 1: Name of stack +# Returns: Top element from the stack after removing it +# ---------------------------------------------------------------------------- +pop = $(__gmsl_tr1)$(strip $(if $(filter-out undefined,$(origin __gmsl_stack_$1)), \ + $(call first,$(__gmsl_stack_$1)) \ + $(eval __gmsl_stack_$1 := $(call rest,$(__gmsl_stack_$1))))) + +# ---------------------------------------------------------------------------- +# Function: peek +# Arguments: 1: Name of stack +# Returns: Top element from the stack without removing it +# ---------------------------------------------------------------------------- +peek = $(__gmsl_tr1)$(call first,$(__gmsl_stack_$1)) + +# ---------------------------------------------------------------------------- +# Function: depth +# Arguments: 1: Name of stack +# Returns: Number of items on the stack +# ---------------------------------------------------------------------------- +depth = $(__gmsl_tr1)$(words $(__gmsl_stack_$1)) + +endif # __gmsl_have_eval + +# ########################################################################### +# DEBUGGING FACILITIES +# ########################################################################### + +# ---------------------------------------------------------------------------- +# Target: gmsl-print-% +# Arguments: The % should be replaced by the name of a variable that you +# wish to print out. +# Action: Echos the name of the variable that matches the % and its value. +# For example, 'make gmsl-print-SHELL' will output the value of +# the SHELL variable +# ---------------------------------------------------------------------------- +gmsl-print-%: ; @echo $* = $($*) + +# ---------------------------------------------------------------------------- +# Function: assert +# Arguments: 1: A boolean that must be true or the assertion will fail +# 2: The message to print with the assertion +# Returns: None +# ---------------------------------------------------------------------------- +assert = $(if $1,,$(call __gmsl_error,Assertion failure: $2)) + +# ---------------------------------------------------------------------------- +# Function: assert_exists +# Arguments: 1: Name of file that must exist, if it is missing an assertion +# will be generated +# Returns: None +# ---------------------------------------------------------------------------- +assert_exists = $(call assert,$(wildcard $1),file '$1' missing)