Source/cmConditionEvaluator.h

   1 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   2    file Copyright.txt or https://cmake.org/licensing for details.  */
   3 #pragma once
   4
   5 #include "cmConfigure.h" // IWYU pragma: keep
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include <cmext/string_view>
  11
  12 #include "cmListFileCache.h"
  13 #include "cmMessageType.h" // IWYU pragma: keep
  14 #include "cmPolicies.h"
  15 #include "cmValue.h"
  16
  17 class cmExpandedCommandArgument;
  18 class cmMakefile;
  19
  20 class cmConditionEvaluator
  21 {
  22 public:
  23   cmConditionEvaluator(cmMakefile& makefile, cmListFileBacktrace bt);
  24
  25   // this is a shared function for both If and Else to determine if the
  26   // arguments were valid, and if so, was the response true. If there is
  27   // an error, the errorString will be set.
  28   bool IsTrue(const std::vector<cmExpandedCommandArgument>& args,
  29               std::string& errorString, MessageType& status);
  30
  31 private:
  32   class cmArgumentList;
  33
  34   // Filter the given variable definition based on policy CMP0054.
  35   cmValue GetDefinitionIfUnquoted(
  36     const cmExpandedCommandArgument& argument) const;
  37
  38   cmValue GetVariableOrString(const cmExpandedCommandArgument& argument) const;
  39
  40   bool IsKeyword(cm::static_string_view keyword,
  41                  const cmExpandedCommandArgument& argument) const;
  42
  43   bool GetBooleanValue(cmExpandedCommandArgument& arg) const;
  44
  45   bool GetBooleanValueOld(cmExpandedCommandArgument const& arg,
  46                           bool one) const;
  47
  48   bool GetBooleanValueWithAutoDereference(cmExpandedCommandArgument& newArg,
  49                                           std::string& errorString,
  50                                           MessageType& status,
  51                                           bool oneArg = false) const;
  52
  53   template <int N>
  54   int matchKeysImpl(const cmExpandedCommandArgument&);
  55
  56   template <int N, typename T, typename... Keys>
  57   int matchKeysImpl(const cmExpandedCommandArgument&, T, Keys...);
  58
  59   template <typename... Keys>
  60   int matchKeys(const cmExpandedCommandArgument&, Keys...);
  61
  62   bool HandleLevel0(cmArgumentList& newArgs, std::string& errorString,
  63                     MessageType& status);
  64
  65   bool HandleLevel1(cmArgumentList& newArgs, std::string&, MessageType&);
  66
  67   bool HandleLevel2(cmArgumentList& newArgs, std::string& errorString,
  68                     MessageType& status);
  69
  70   bool HandleLevel3(cmArgumentList& newArgs, std::string& errorString,
  71                     MessageType& status);
  72
  73   bool HandleLevel4(cmArgumentList& newArgs, std::string& errorString,
  74                     MessageType& status);
  75
  76   cmMakefile& Makefile;
  77   cmListFileBacktrace Backtrace;
  78   cmPolicies::PolicyStatus Policy12Status;
  79   cmPolicies::PolicyStatus Policy54Status;
  80   cmPolicies::PolicyStatus Policy57Status;
  81   cmPolicies::PolicyStatus Policy64Status;
  82   cmPolicies::PolicyStatus Policy139Status;
  83 };