a BSD make tool (derived from NetBSD’s make).
| directive-for.mk (bmake-20201101) | : | directive-for.mk (bmake-20201117) |
|---|
|
| # $NetBSD: directive-for.mk,v 1.8 2020/10/25 15:49:03 rillig Exp $ | | # $NetBSD: directive-for.mk,v 1.9 2020/11/15 20:20:58 rillig Exp $ |
| # | | # |
| # Tests for the .for directive. | | # Tests for the .for directive. |
|
| | # |
| | # TODO: Describe naming conventions for the loop variables. |
| | # .for f in values |
| | # .for file in values |
| | # .for _FILE_ in values |
| | # .for .FILE. in values |
| | # .for _f_ in values |
| | |
| # Using the .for loop, lists of values can be produced. | | # Using the .for loop, lists of values can be produced. |
| # In simple cases, the :@var@${var}@ variable modifier can be used to | | # In simple cases, the :@var@${var}@ variable modifier can be used to |
| # reach the same effects. | | # reach the same effects. |
| # | | # |
| .undef NUMBERS | | .undef NUMBERS |
| .for num in 1 2 3 | | .for num in 1 2 3 |
| NUMBERS+= ${num} | | NUMBERS+= ${num} |
| .endfor | | .endfor |
| .if ${NUMBERS} != "1 2 3" | | .if ${NUMBERS} != "1 2 3" |
| . error | | . error |
| .endif | | .endif |
| | |
| # The .for loop also works for multiple iteration variables. | | # The .for loop also works for multiple iteration variables. |
|
| | # This is something that the variable modifier :@ cannot do. |
| .for name value in VARNAME value NAME2 value2 | | .for name value in VARNAME value NAME2 value2 |
| ${name}= ${value} | | ${name}= ${value} |
| .endfor | | .endfor |
| .if ${VARNAME} != "value" || ${NAME2} != "value2" | | .if ${VARNAME} != "value" || ${NAME2} != "value2" |
| . error | | . error |
| .endif | | .endif |
| | |
| # The .for loop splits the items at whitespace, taking quotes into account, | | # The .for loop splits the items at whitespace, taking quotes into account, |
| # just like the :M or :S variable modifiers. | | # just like the :M or :S variable modifiers. |
| # | | # |
| # Until 2012-06-03, it had split the items exactly at whitespace, without | | # Until 2012-06-03, it had split the items exactly at whitespace, without |
|
| # taking the quotes into account. | | # taking the quotes into account. This had resulted in 10 words. |
| # | | # |
| .undef WORDS | | .undef WORDS |
| .for var in one t\ w\ o "three three" 'four four' `five six` | | .for var in one t\ w\ o "three three" 'four four' `five six` |
| WORDS+= counted | | WORDS+= counted |
| .endfor | | .endfor |
| .if ${WORDS:[#]} != 6 | | .if ${WORDS:[#]} != 6 |
| . error | | . error |
| .endif | | .endif |
| | |
| # In the body of the .for loop, the iteration variables can be accessed | | # In the body of the .for loop, the iteration variables can be accessed |
| | | |
| End of changes. 4 change blocks. |
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| 2 lines changed or deleted | | 10 lines changed or added |
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"Fossies" - the Fresh Open Source Software Archive 