# tactics.
# The only tactic that ‘make’ has.
-tactic *file (filename) = {
+tactic *file (filename) = @{
# Rebuild if the target file doesn't exist at all.
test -f %filename || exit 99
# This is a simpler tactic than the above since it will
# rebuild if the file is missing, but not if it is older.
-tactic *exists (filename) = {
+tactic *exists (filename) = @{
test -f %filename || exit 99
}
#----------------------------------------------------------------------
+# Basic functions.
+
+# Wrap list of strings in a call or tactic.
+pure function wrap (wrapper, xs) = @{
+ echo '['
+ for x in %xs; do
+ echo %wrapper "( "
+ quoted_string "$x"
+ echo " ),"
+ done
+ echo ']'
+}
+
+#----------------------------------------------------------------------
# Text functions.
# Sort + uniq a list.
-function sort (xs) returning strings = {
+pure function sort (xs) returning strings = @{
for f in %xs; do echo "$f"; done | sort -u
}
# File functions.
# Expand a wildcard into a list of filenames.
-function wildcard (wc) returning strings = {
+#
+# This function is probably not "pure" since it depends on the
+# current working directory and also files may be created in
+# the directory while goals is running which would affect the
+# result.
+function wildcard (wc) returning strings = @{
shopt -s nullglob
# Note that the substitution is quoted by goals, so to expand
# it we must assign it to a variable and then use it unquoted.