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105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file LICENSE.rst or https://cmake.org/licensing for details. */
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#pragma once
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#include "cmConfigure.h" // IWYU pragma: keep
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#include <string>
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#include <utility>
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#include "cmStringAlgorithms.h"
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#include "cmTargetTypes.h"
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#include "cmValue.h"
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class cmMakefile;
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class cmTargetPropertyComputer
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{
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public:
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template <typename Target>
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static cmValue GetProperty(Target const* tgt, std::string const& prop,
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cmMakefile const& mf)
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{
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if (cmValue loc = GetLocation(tgt, prop, mf)) {
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return loc;
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}
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if (prop == "SOURCES") {
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return GetSources(tgt);
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}
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return nullptr;
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}
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// True if `prop` is a *computed* location property for `type` -- i.e. one of
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// LOCATION, LOCATION_<CONFIG>, or <CONFIG>_LOCATION on a target type that
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// synthesizes a location. Reading one of these from a non-imported target
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// is an error. Excludes IMPORTED_LOCATION and XCODE_ATTRIBUTE_*. If
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// non-null, `config` is filled with the requested configuration ("" for
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// plain LOCATION).
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static bool IsComputedLocationProperty(cm::TargetType type,
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std::string const& prop,
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std::string* config = nullptr)
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{
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switch (type) {
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case cm::TargetType::EXECUTABLE:
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case cm::TargetType::STATIC_LIBRARY:
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case cm::TargetType::SHARED_LIBRARY:
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case cm::TargetType::MODULE_LIBRARY:
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case cm::TargetType::UNKNOWN_LIBRARY:
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break;
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default:
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return false;
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}
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if (prop == "LOCATION") {
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if (config) {
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config->clear();
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}
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return true;
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}
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if (cmHasLiteralPrefix(prop, "LOCATION_")) {
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if (config) {
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*config = prop.substr(9);
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}
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return true;
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}
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if (cmHasLiteralSuffix(prop, "_LOCATION") &&
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!cmHasLiteralPrefix(prop, "XCODE_ATTRIBUTE_")) {
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std::string c(prop.c_str(), prop.size() - 9);
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if (c != "IMPORTED") {
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if (config) {
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*config = std::move(c);
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}
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return true;
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}
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}
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return false;
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}
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private:
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static void IssueLocationPropertyError(std::string const& tgtName,
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cmMakefile const& mf);
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template <typename Target>
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static std::string const& ImportedLocation(Target const* tgt,
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std::string const& config);
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template <typename Target>
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static cmValue GetLocation(Target const* tgt, std::string const& prop,
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cmMakefile const& mf)
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{
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// Watch for special "computed" properties that are dependent on
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// other properties or variables. Always recompute them.
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std::string config;
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if (!IsComputedLocationProperty(tgt->GetType(), prop, &config)) {
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return nullptr;
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}
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if (!tgt->IsImported()) {
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IssueLocationPropertyError(tgt->GetName(), mf);
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return nullptr;
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}
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return cmValue(ImportedLocation(tgt, config));
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}
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template <typename Target>
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static cmValue GetSources(Target const* tgt);
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};
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