function flag_set_p(regex, flags)
{
return (" " flags " ") ~ (" " regex " ")
}
function test_flag(regex, flags, string)
{
if (flag_set_p(regex, flags))
return string
return ""
}
function opt_args(name, flags)
{
flags = " " flags
if (flags !~ " " name "\\(")
return ""
sub(".* " name "\\(", "", flags)
sub("\\).*", "", flags)
return flags
}
function nth_arg(n, s)
{
while (n-- > 0) {
if (s !~ ",")
return ""
sub("[^,]*, *", "", s)
}
sub(",.*", "", s)
return s
}
function switch_flags (flags)
{
result = "0"
for (j = 0; j < n_langs; j++) {
regex = langs[j]
gsub ( "\\+", "\\+", regex )
result = result test_flag(regex, flags, " | " macros[j])
}
result = result \
test_flag("Common", flags, " | CL_COMMON") \
test_flag("Target", flags, " | CL_TARGET") \
test_flag("Joined", flags, " | CL_JOINED") \
test_flag("JoinedOrMissing", flags, " | CL_JOINED | CL_MISSING_OK") \
test_flag("Separate", flags, " | CL_SEPARATE") \
test_flag("RejectNegative", flags, " | CL_REJECT_NEGATIVE") \
test_flag("UInteger", flags, " | CL_UINTEGER") \
test_flag("Undocumented", flags, " | CL_UNDOCUMENTED") \
test_flag("Report", flags, " | CL_REPORT")
sub( "^0 \\| ", "", result )
return result
}
function var_name(flags)
{
return nth_arg(0, opt_args("Var", flags))
}
function global_state_p(flags)
{
return (var_name(flags) != "" \
|| opt_args("Mask", flags) != "" \
|| opt_args("InverseMask", flags) != "")
}
function needs_state_p(flags)
{
return flag_set_p("Target", flags)
}
function static_var(name, flags)
{
if (global_state_p(flags) || !needs_state_p(flags))
return ""
gsub ("[^A-Za-z0-9]", "_", name)
return "VAR_" name
}
function var_type(flags)
{
if (!flag_set_p("Joined.*", flags))
return "int "
else if (flag_set_p("UInteger", flags))
return "int "
else
return "const char *"
}
function var_set(flags)
{
s = nth_arg(1, opt_args("Var", flags))
if (s != "")
return "CLVC_EQUAL, " s
s = opt_args("Mask", flags);
if (s != "") {
vn = var_name(flags);
if (vn)
return "CLVC_BIT_SET, OPTION_MASK_" s
else
return "CLVC_BIT_SET, MASK_" s
}
s = nth_arg(0, opt_args("InverseMask", flags));
if (s != "") {
vn = var_name(flags);
if (vn)
return "CLVC_BIT_CLEAR, OPTION_MASK_" s
else
return "CLVC_BIT_CLEAR, MASK_" s
}
if (var_type(flags) == "const char *")
return "CLVC_STRING, 0"
return "CLVC_BOOLEAN, 0"
}
function var_ref(name, flags)
{
name = var_name(flags) static_var(name, flags)
if (name != "")
return "&" name
if (opt_args("Mask", flags) != "")
return "&target_flags"
if (opt_args("InverseMask", flags) != "")
return "&target_flags"
return "0"
}