CMake/Source/cmGeneratorExpressionDAGChe...

224 lines
6.6 KiB
C++
Raw Normal View History

Simplify CMake per-source license notices Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
2016-09-27 22:01:08 +03:00
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmGeneratorExpressionDAGChecker.h"
2015-03-08 15:51:20 +03:00
#include "cmAlgorithms.h"
#include "cmGeneratorExpressionContext.h"
#include "cmGeneratorExpressionEvaluator.h"
#include "cmGeneratorTarget.h"
#include "cmLocalGenerator.h"
#include "cmake.h"
#include <sstream>
#include <string.h>
#include <utility>
cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
const cmListFileBacktrace& backtrace, const std::string& target,
const std::string& property, const GeneratorExpressionContent* content,
cmGeneratorExpressionDAGChecker* parent)
: Parent(parent)
, Target(target)
, Property(property)
, Content(content)
, Backtrace(backtrace)
, TransitivePropertiesOnly(false)
{
Initialize();
}
cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
const std::string& target, const std::string& property,
const GeneratorExpressionContent* content,
cmGeneratorExpressionDAGChecker* parent)
: Parent(parent)
, Target(target)
, Property(property)
, Content(content)
, Backtrace()
, TransitivePropertiesOnly(false)
{
Initialize();
}
void cmGeneratorExpressionDAGChecker::Initialize()
{
const cmGeneratorExpressionDAGChecker* top = this;
const cmGeneratorExpressionDAGChecker* p = this->Parent;
while (p) {
top = p;
p = p->Parent;
}
this->CheckResult = this->CheckGraph();
#define TEST_TRANSITIVE_PROPERTY_METHOD(METHOD) top->METHOD() ||
if (CheckResult == DAG && (CM_FOR_EACH_TRANSITIVE_PROPERTY_METHOD(
TEST_TRANSITIVE_PROPERTY_METHOD) false))
#undef TEST_TRANSITIVE_PROPERTY_METHOD
{
std::map<std::string, std::set<std::string> >::const_iterator it =
top->Seen.find(this->Target);
if (it != top->Seen.end()) {
const std::set<std::string>& propSet = it->second;
if (propSet.find(this->Property) != propSet.end()) {
this->CheckResult = ALREADY_SEEN;
return;
}
}
const_cast<cmGeneratorExpressionDAGChecker*>(top)
->Seen[this->Target]
.insert(this->Property);
}
}
cmGeneratorExpressionDAGChecker::Result
cmGeneratorExpressionDAGChecker::Check() const
{
return this->CheckResult;
}
void cmGeneratorExpressionDAGChecker::ReportError(
cmGeneratorExpressionContext* context, const std::string& expr)
{
if (this->CheckResult == DAG) {
return;
}
context->HadError = true;
if (context->Quiet) {
return;
}
const cmGeneratorExpressionDAGChecker* parent = this->Parent;
if (parent && !parent->Parent) {
std::ostringstream e;
e << "Error evaluating generator expression:\n"
<< " " << expr << "\n"
<< "Self reference on target \"" << context->HeadTarget->GetName()
<< "\".\n";
context->LG->GetCMakeInstance()->IssueMessage(cmake::FATAL_ERROR, e.str(),
parent->Backtrace);
return;
}
{
std::ostringstream e;
/* clang-format off */
e << "Error evaluating generator expression:\n"
<< " " << expr << "\n"
<< "Dependency loop found.";
/* clang-format on */
context->LG->GetCMakeInstance()->IssueMessage(cmake::FATAL_ERROR, e.str(),
context->Backtrace);
}
int loopStep = 1;
while (parent) {
std::ostringstream e;
e << "Loop step " << loopStep << "\n"
<< " "
<< (parent->Content ? parent->Content->GetOriginalExpression() : expr)
<< "\n";
context->LG->GetCMakeInstance()->IssueMessage(cmake::FATAL_ERROR, e.str(),
parent->Backtrace);
parent = parent->Parent;
++loopStep;
}
}
cmGeneratorExpressionDAGChecker::Result
cmGeneratorExpressionDAGChecker::CheckGraph() const
{
const cmGeneratorExpressionDAGChecker* parent = this->Parent;
while (parent) {
if (this->Target == parent->Target && this->Property == parent->Property) {
return (parent == this->Parent) ? SELF_REFERENCE : CYCLIC_REFERENCE;
}
parent = parent->Parent;
}
return DAG;
}
bool cmGeneratorExpressionDAGChecker::GetTransitivePropertiesOnly()
{
const cmGeneratorExpressionDAGChecker* top = this;
const cmGeneratorExpressionDAGChecker* parent = this->Parent;
while (parent) {
top = parent;
parent = parent->Parent;
}
return top->TransitivePropertiesOnly;
}
bool cmGeneratorExpressionDAGChecker::EvaluatingLinkLibraries(const char* tgt)
{
const cmGeneratorExpressionDAGChecker* top = this;
const cmGeneratorExpressionDAGChecker* parent = this->Parent;
while (parent) {
top = parent;
parent = parent->Parent;
}
const char* prop = top->Property.c_str();
if (tgt) {
return top->Target == tgt && strcmp(prop, "LINK_LIBRARIES") == 0;
}
return (strcmp(prop, "LINK_LIBRARIES") == 0 ||
strcmp(prop, "LINK_INTERFACE_LIBRARIES") == 0 ||
strcmp(prop, "IMPORTED_LINK_INTERFACE_LIBRARIES") == 0 ||
cmHasLiteralPrefix(prop, "LINK_INTERFACE_LIBRARIES_") ||
cmHasLiteralPrefix(prop, "IMPORTED_LINK_INTERFACE_LIBRARIES_")) ||
strcmp(prop, "INTERFACE_LINK_LIBRARIES") == 0;
}
std::string cmGeneratorExpressionDAGChecker::TopTarget() const
{
const cmGeneratorExpressionDAGChecker* top = this;
const cmGeneratorExpressionDAGChecker* parent = this->Parent;
while (parent) {
top = parent;
parent = parent->Parent;
}
return top->Target;
}
enum TransitiveProperty
{
#define DEFINE_ENUM_ENTRY(NAME) NAME,
CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(DEFINE_ENUM_ENTRY)
#undef DEFINE_ENUM_ENTRY
TransitivePropertyTerminal
};
template <TransitiveProperty>
bool additionalTest(const char* const /*unused*/)
{
return false;
}
template <>
bool additionalTest<COMPILE_DEFINITIONS>(const char* const prop)
{
return cmHasLiteralPrefix(prop, "COMPILE_DEFINITIONS_");
}
#define DEFINE_TRANSITIVE_PROPERTY_METHOD(METHOD, PROPERTY) \
bool cmGeneratorExpressionDAGChecker::METHOD() const \
{ \
const char* const prop = this->Property.c_str(); \
if (strcmp(prop, #PROPERTY) == 0 || \
strcmp(prop, "INTERFACE_" #PROPERTY) == 0) { \
return true; \
} \
return additionalTest<PROPERTY>(prop); \
}
CM_FOR_EACH_TRANSITIVE_PROPERTY(DEFINE_TRANSITIVE_PROPERTY_METHOD)
#undef DEFINE_TRANSITIVE_PROPERTY_METHOD