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author | Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com> | 2016-08-23 14:05:54 +0200 |
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committer | Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com> | 2016-08-25 11:56:07 +0000 |
commit | 12bb328bb0be8efe54aae750c21938aab4d17539 (patch) | |
tree | e41933a511e6edeaccf3840d8897345971a3fdaf /qmake/library/qmakebuiltins.cpp | |
parent | 6a9f38a11d56bb3ba6ec59955f3220627c0d30b6 (diff) |
add discard_from() function
this function discards all values that come from a specific file. it
will be needed for configure bootstrapping, but is too obscure to
document it for general use.
Change-Id: I62c18aeb1847712e33d0599dbb0b90ffa1722438
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Diffstat (limited to 'qmake/library/qmakebuiltins.cpp')
-rw-r--r-- | qmake/library/qmakebuiltins.cpp | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/qmake/library/qmakebuiltins.cpp b/qmake/library/qmakebuiltins.cpp index 1be57bd845..4418c95f4b 100644 --- a/qmake/library/qmakebuiltins.cpp +++ b/qmake/library/qmakebuiltins.cpp @@ -52,6 +52,8 @@ # include <qthreadpool.h> #endif +#include <algorithm> + #ifdef Q_OS_UNIX #include <time.h> #include <utime.h> @@ -97,7 +99,7 @@ enum ExpandFunc { enum TestFunc { T_INVALID = 0, T_REQUIRES, T_GREATERTHAN, T_LESSTHAN, T_EQUALS, T_EXISTS, T_EXPORT, T_CLEAR, T_UNSET, T_EVAL, T_CONFIG, T_SYSTEM, - T_DEFINED, T_CONTAINS, T_INFILE, + T_DEFINED, T_DISCARD_FROM, T_CONTAINS, T_INFILE, T_COUNT, T_ISEMPTY, T_PARSE_JSON, T_INCLUDE, T_LOAD, T_DEBUG, T_LOG, T_MESSAGE, T_WARNING, T_ERROR, T_IF, T_MKPATH, T_WRITE_FILE, T_TOUCH, T_CACHE }; @@ -178,6 +180,7 @@ void QMakeEvaluator::initFunctionStatics() { "if", T_IF }, { "isActiveConfig", T_CONFIG }, { "system", T_SYSTEM }, + { "discard_from", T_DISCARD_FROM }, { "defined", T_DEFINED }, { "contains", T_CONTAINS }, { "infile", T_INFILE }, @@ -1292,6 +1295,38 @@ QMakeEvaluator::VisitReturn QMakeEvaluator::evaluateBuiltinConditional( } return ReturnTrue; } + case T_DISCARD_FROM: { + if (args.count() != 1 || args.at(0).isEmpty()) { + evalError(fL1S("discard_from(file) requires one argument.")); + return ReturnFalse; + } + if (m_valuemapStack.count() != 1) { + evalError(fL1S("discard_from() cannot be called from functions.")); + return ReturnFalse; + } + QString fn = resolvePath(args.at(0).toQString(m_tmp1)); + ProFile *pro = m_parser->parsedProFile(fn, QMakeParser::ParseOnlyCached); + if (!pro) + return ReturnFalse; + ProValueMap &vmap = m_valuemapStack.first(); + for (auto vit = vmap.begin(); vit != vmap.end(); ) { + if (!vit->isEmpty()) { + auto isFrom = [pro](const ProString &s) { + return s.sourceFile() == pro; + }; + vit->erase(std::remove_if(vit->begin(), vit->end(), isFrom), vit->end()); + if (vit->isEmpty()) { + // When an initially non-empty variable becomes entirely empty, + // undefine it altogether. + vit = vmap.erase(vit); + continue; + } + } + ++vit; + } + pro->deref(); + return ReturnTrue; + } case T_INFILE: if (args.count() < 2 || args.count() > 3) { evalError(fL1S("infile(file, var, [values]) requires two or three arguments.")); |