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| 1 | +# This module defines the ARGUMENT_PARSER macro for parsing macro arguments. |
| 2 | + |
| 3 | +# ARGUMENT_PARSER Macro |
| 4 | +# This macro parses a mixed list of arguments and headers into lists and boolean |
| 5 | +# variables. The output lists and boolean variables are stored using |
| 6 | +# tolower( header ) variable names. All non-header arguments will be added to |
| 7 | +# the output list that corresponds to the header that they follow (or to the |
| 8 | +# default list if no header has been parsed yet). If a boolean header is passed, |
| 9 | +# then its corresponding output variable is set to YES. |
| 10 | +# |
| 11 | +# Usage: |
| 12 | +# ARGUMENT_PARSER( default_list lists bools ARGN ) |
| 13 | +# |
| 14 | +# Parameters: |
| 15 | +# default_list The name of the variable that list values should be added |
| 16 | +# to before any list headers have been reached. You may |
| 17 | +# pass "" to disregard premature list values. |
| 18 | +# lists The list headers (semicolon-separated string). |
| 19 | +# bools The boolean headers (semicolon-separated string). |
| 20 | +# ARGN The arguments to parse. |
| 21 | +MACRO( ARGUMENT_PARSER default_list lists bools ) |
| 22 | + |
| 23 | + # Start using the default list. |
| 24 | + SET( dest "${default_list}" ) |
| 25 | + IF( NOT dest ) |
| 26 | + SET( dest tmp ) |
| 27 | + ENDIF( NOT dest ) |
| 28 | + |
| 29 | + # Clear all of the lists. |
| 30 | + FOREACH( list_itr ${lists} ) |
| 31 | + STRING( TOLOWER ${list_itr} lower ) |
| 32 | + SET( ${lower} "" ) |
| 33 | + ENDFOREACH( list_itr ) |
| 34 | + |
| 35 | + # Set all boolean variables to NO. |
| 36 | + FOREACH( bool_itr ${bools} ) |
| 37 | + STRING( TOLOWER ${bool_itr} lower ) |
| 38 | + SET( ${lower} NO ) |
| 39 | + ENDFOREACH( bool_itr ) |
| 40 | + |
| 41 | + # For all arguments. |
| 42 | + FOREACH( arg_itr ${ARGN} ) |
| 43 | + |
| 44 | + SET( done NO ) |
| 45 | + |
| 46 | + # For each of the list headers, if the current argument matches a list |
| 47 | + # header, then set the destination to the header. |
| 48 | + FOREACH( list_itr ${lists} ) |
| 49 | + IF( ${arg_itr} STREQUAL ${list_itr} ) |
| 50 | + STRING( TOLOWER ${arg_itr} lower ) |
| 51 | + SET( dest ${lower} ) |
| 52 | + SET( done YES ) |
| 53 | + ENDIF( ${arg_itr} STREQUAL ${list_itr} ) |
| 54 | + ENDFOREACH( list_itr ) |
| 55 | + |
| 56 | + # For each of the boolean headers, if the current argument matches a |
| 57 | + # boolean header, then set the boolean variable to true. |
| 58 | + FOREACH( bool_itr ${bools} ) |
| 59 | + IF( ${arg_itr} STREQUAL ${bool_itr} ) |
| 60 | + STRING( TOLOWER ${arg_itr} lower ) |
| 61 | + SET( ${lower} YES ) |
| 62 | + SET( done YES ) |
| 63 | + ENDIF( ${arg_itr} STREQUAL ${bool_itr} ) |
| 64 | + ENDFOREACH( bool_itr ) |
| 65 | + |
| 66 | + # If the current argument is not a header, then add it to the current |
| 67 | + # destination list. |
| 68 | + IF( NOT done ) |
| 69 | + SET( ${dest} ${${dest}} ${arg_itr} ) |
| 70 | + ENDIF( NOT done ) |
| 71 | + |
| 72 | + ENDFOREACH( arg_itr ) |
| 73 | + |
| 74 | +ENDMACRO( ARGUMENT_PARSER ) |
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