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1import lit.formats2 3config.name = "shtest-define"4config.suffixes = [".txt"]5# Use lit's internal shell to avoid shell portability issues within RUN lines6# (e.g., for 'echo' commands in Windows). Those issues should be orthogonal to7# the substitution behavior we are trying to test.8config.test_format = lit.formats.ShTest(execute_external=False)9config.test_source_root = None10config.test_exec_root = None11 12# When config.recursiveExpansionLimit is not specified, it's important to13# prepend substitutions before substitutions they might now or later (upon a14# redefinition) depend upon. For example, %{global:greeting} and %{global:what}15# act as parameters for %{global:echo}, so we make sure the latter expands16# before the former. Moreover, some tests redefine %{global:greeting} in terms17# of %{global:what}, so we make sure the former expands before the latter.18# If we always insert at the beginning of the substitution list (as DEFINE19# does), then the rule is simple: define a substitution before you refer to it.20config.substitutions.insert(0, ("%{global:what}", "World"))21config.substitutions.insert(0, ("%{global:greeting}", ""))22config.substitutions.insert(23 0, ("%{global:echo}", "echo GLOBAL: %{global:greeting} %{global:what}")24)25 26# This substitution includes an re.sub replacement string escape sequence,27# which lit should treat as plain text.28config.substitutions.insert(0, ("%{global:subst-with-escapes}", r"value-with-\g"))29 30# The following substitution definitions are confusing and should be avoided.31# We define them here so we can test that 'DEFINE:' and 'REDEFINE:' directives32# guard against the confusion they cause.33 34# Even though each of '%{global:inside}', '%{global:prefix}', and35# '%{global:suffix}' is not already the exact pattern of a substitution,36# 'DEFINE:' and 'REDEFINE:' will refuse to (re)define a substitution with that37# pattern because it is a substring of one of the following substitution's38# patterns.39config.substitutions.insert(0, ("<%{global:inside}>", "<@>"))40config.substitutions.insert(0, (r"%{global:prefix}\((.*)\)", r"@(\g<1>)"))41config.substitutions.insert(0, ("@%{global:suffix}", "@@"))42 43# These cannot be redefined by 'REDEFINE:', which doesn't know which one to44# redefine.45config.substitutions.insert(0, ("%{global:multiple-exact}", "first"))46config.substitutions.insert(0, ("%{global:multiple-exact}", "second"))47 48# Even though '%{global:multiple-once-exact}' is the exact pattern of only one49# existing substitution, 'REDEFINE:' will refuse to redefine that substitution50# because that string is a substring of another substitution's pattern.51config.substitutions.insert(0, ("%{global:multiple-once-exact}", "@"))52config.substitutions.insert(0, ("<%{global:multiple-once-exact}>", "<@>"))53 54recur = lit_config.params.get("recur", None)55if recur:56 config.recursiveExpansionLimit = int(recur)57