ExtUtils::ParseXS::Utilities(3perl) Perl Programmers Reference Guide NAME ExtUtils::ParseXS::Utilities - Subroutines used with ExtUtils::ParseXS SYNOPSIS use ExtUtils::ParseXS::Utilities qw( standard_typemap_locations trim_whitespace C_string valid_proto_string process_typemaps map_type standard_XS_defs assign_func_args analyze_preprocessor_statements set_cond Warn blurt death check_conditional_preprocessor_statements escape_file_for_line_directive report_typemap_failure ); SUBROUTINES The following functions are not considered to be part of the public interface. They are documented here for the benefit of future maintainers of this module. standard_typemap_locations() o Purpose Provide a list of filepaths where typemap files may be found. The filepaths -- relative paths to files (not just directory paths) -- appear in this list in lowest-to-highest priority. The highest priority is to look in the current directory. 'typemap' The second and third highest priorities are to look in the parent of the current directory and a directory called lib/ExtUtils underneath the parent directory. '../typemap', '../lib/ExtUtils/typemap', The fourth through ninth highest priorities are to look in the corresponding grandparent, great-grandparent and great-great- grandparent directories. '../../typemap', '../../lib/ExtUtils/typemap', '../../../typemap', '../../../lib/ExtUtils/typemap', '../../../../typemap', '../../../../lib/ExtUtils/typemap', The tenth and subsequent priorities are to look in directories named ExtUtils which are subdirectories of directories found in @INC -- provided a file named typemap actually exists in such a directory. Example: '/usr/local/lib/perl5/5.10.1/ExtUtils/typemap', However, these filepaths appear in the list returned by standard_typemap_locations() in reverse order, i.e., lowest-to- highest. '/usr/local/lib/perl5/5.10.1/ExtUtils/typemap', '../../../../lib/ExtUtils/typemap', '../../../../typemap', '../../../lib/ExtUtils/typemap', '../../../typemap', '../../lib/ExtUtils/typemap', '../../typemap', '../lib/ExtUtils/typemap', '../typemap', 'typemap' o Arguments my @stl = standard_typemap_locations( \@INC ); Reference to @INC. o Return Value Array holding list of directories to be searched for typemap files. trim_whitespace() o Purpose Perform an in-place trimming of leading and trailing whitespace from the first argument provided to the function. o Argument trim_whitespace($arg); o Return Value None. Remember: this is an in-place modification of the argument. C_string() o Purpose Escape backslashes ("\") in prototype strings. o Arguments $ProtoThisXSUB = C_string($_); String needing escaping. o Return Value Properly escaped string. valid_proto_string() o Purpose Validate prototype string. o Arguments String needing checking. o Return Value Upon success, returns the same string passed as argument. Upon failure, returns 0. process_typemaps() o Purpose Process all typemap files. o Arguments my $typemaps_object = process_typemaps( $args{typemap}, $pwd ); List of two elements: "typemap" element from %args; current working directory. o Return Value Upon success, returns an ExtUtils::Typemaps object. map_type() o Purpose Performs a mapping at several places inside "PARAGRAPH" loop. o Arguments $type = map_type($self, $type, $varname); List of three arguments. o Return Value String holding augmented version of second argument. standard_XS_defs() o Purpose Writes to the ".c" output file certain preprocessor directives and function headers needed in all such files. o Arguments None. o Return Value Returns true. assign_func_args() o Purpose Perform assignment to the "func_args" attribute. o Arguments $string = assign_func_args($self, $argsref, $class); List of three elements. Second is an array reference; third is a string. o Return Value String. analyze_preprocessor_statements() o Purpose Within each function inside each Xsub, print to the .c output file certain preprocessor statements. o Arguments ( $self, $XSS_work_idx, $BootCode_ref ) = analyze_preprocessor_statements( $self, $statement, $XSS_work_idx, $BootCode_ref ); List of four elements. o Return Value Modifed values of three of the arguments passed to the function. In particular, the "XSStack" and "InitFileCode" attributes are modified. set_cond() o Purpose o Arguments o Return Value current_line_number() o Purpose Figures out the current line number in the XS file. o Arguments $self o Return Value The current line number. Warn() o Purpose Print warnings with line number details at the end. o Arguments List of text to output. o Return Value None. WarnHint() o Purpose Prints warning with line number details. The last argument is assumed to be a hint string. o Arguments List of strings to warn, followed by one argument representing a hint. If that argument is defined then it will be split on newlines and output line by line after the main warning. o Return Value None. _MsgHint() o Purpose Constructs an exception message with line number details. The last argument is assumed to be a hint string. o Arguments List of strings to warn, followed by one argument representing a hint. If that argument is defined then it will be split on newlines and concatenated line by line (parenthesized) after the main message. o Return Value The constructed string. blurt() o Purpose o Arguments o Return Value death() o Purpose o Arguments o Return Value check_conditional_preprocessor_statements() o Purpose o Arguments o Return Value escape_file_for_line_directive() o Purpose Escapes a given code source name (typically a file name but can also be a command that was read from) so that double-quotes and backslashes are escaped. o Arguments A string. o Return Value A string with escapes for double-quotes and backslashes. "report_typemap_failure" o Purpose Do error reporting for missing typemaps. o Arguments The "ExtUtils::ParseXS" object. An "ExtUtils::Typemaps" object. The string that represents the C type that was not found in the typemap. Optionally, the string "death" or "blurt" to choose whether the error is immediately fatal or not. Default: "blurt" o Return Value Returns nothing. Depending on the arguments, this may call "death" or "blurt", the former of which is fatal. perl v5.38.2 2024-02-11 ExtUtils::ParseXS::Utilities(3perl)