import lit.formats config.name = "shtest-define" config.suffixes = [".txt"] # Use lit's internal shell to avoid shell portability issues within RUN lines # (e.g., for 'echo' commands in Windows). Those issues should be orthogonal to # the substitution behavior we are trying to test. config.test_format = lit.formats.ShTest(execute_external=False) config.test_source_root = None config.test_exec_root = None # When config.recursiveExpansionLimit is not specified, it's important to # prepend substitutions before substitutions they might now or later (upon a # redefinition) depend upon. For example, %{global:greeting} and %{global:what} # act as parameters for %{global:echo}, so we make sure the latter expands # before the former. Moreover, some tests redefine %{global:greeting} in terms # of %{global:what}, so we make sure the former expands before the latter. # If we always insert at the beginning of the substitution list (as DEFINE # does), then the rule is simple: define a substitution before you refer to it. config.substitutions.insert(0, ("%{global:what}", "World")) config.substitutions.insert(0, ("%{global:greeting}", "")) config.substitutions.insert( 0, ("%{global:echo}", "echo GLOBAL: %{global:greeting} %{global:what}") ) # The following substitution definitions are confusing and should be avoided. # We define them here so we can test that 'DEFINE:' and 'REDEFINE:' directives # guard against the confusion they cause. # Even though each of '%{global:inside}', '%{global:prefix}', and # '%{global:suffix}' is not already the exact pattern of a substitution, # 'DEFINE:' and 'REDEFINE:' will refuse to (re)define a substitution with that # pattern because it is a substring of one of the following substitution's # patterns. config.substitutions.insert(0, ("<%{global:inside}>", "<@>")) config.substitutions.insert(0, (r"%{global:prefix}\((.*)\)", r"@(\g<1>)")) config.substitutions.insert(0, ("@%{global:suffix}", "@@")) # These cannot be redefined by 'REDEFINE:', which doesn't know which one to # redefine. config.substitutions.insert(0, ("%{global:multiple-exact}", "first")) config.substitutions.insert(0, ("%{global:multiple-exact}", "second")) # Even though '%{global:multiple-once-exact}' is the exact pattern of only one # existing substitution, 'REDEFINE:' will refuse to redefine that substitution # because that string is a substring of another substitution's pattern. config.substitutions.insert(0, ("%{global:multiple-once-exact}", "@")) config.substitutions.insert(0, ("<%{global:multiple-once-exact}>", "<@>")) recur = lit_config.params.get("recur", None) if recur: config.recursiveExpansionLimit = int(recur)