Imported Upstream version 3.9.4upstream/3.9.4

1 files changed, 35 insertions, 229 deletions

diff --git a/Source/cmIfCommand.h b/Source/cmIfCommand.h
index f794b78b8..5877a7d12 100644
--- a/Source/cmIfCommand.h
+++ b/Source/cmIfCommand.h
@@ -1,36 +1,40 @@
-/*============================================================================
-  CMake - Cross Platform Makefile Generator
-  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
-
-  Distributed under the OSI-approved BSD License (the "License");
-  see accompanying file Copyright.txt for details.
-
-  This software is distributed WITHOUT ANY WARRANTY; without even the
-  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the License for more information.
-============================================================================*/
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
 #ifndef cmIfCommand_h
 #define cmIfCommand_h
 
+#include "cmConfigure.h"
+
+#include <string>
+#include <vector>
+
 #include "cmCommand.h"
 #include "cmFunctionBlocker.h"
+#include "cmListFileCache.h"
+
+class cmExecutionStatus;
+class cmExpandedCommandArgument;
+class cmMakefile;
 
 class cmIfFunctionBlocker : public cmFunctionBlocker
 {
 public:
-  cmIfFunctionBlocker() {
-    this->HasRun = false; this->ScopeDepth = 0; }
-  virtual ~cmIfFunctionBlocker() {}
-  virtual bool IsFunctionBlocked(const cmListFileFunction& lff,
-                                 cmMakefile &mf,
-                                 cmExecutionStatus &);
-  virtual bool ShouldRemove(const cmListFileFunction& lff,
-                            cmMakefile &mf);
+  cmIfFunctionBlocker()
+  {
+    this->HasRun = false;
+    this->ElseSeen = false;
+    this->ScopeDepth = 0;
+  }
+  ~cmIfFunctionBlocker() CM_OVERRIDE {}
+  bool IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile& mf,
+                         cmExecutionStatus&) CM_OVERRIDE;
+  bool ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) CM_OVERRIDE;
 
   std::vector<cmListFileArgument> Args;
   std::vector<cmListFileFunction> Functions;
   bool IsBlocking;
   bool HasRun;
+  bool ElseSeen;
   unsigned int ScopeDepth;
 };
 
@@ -41,226 +45,28 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  virtual cmCommand* Clone()
-    {
-    return new cmIfCommand;
-    }
+  cmCommand* Clone() CM_OVERRIDE { return new cmIfCommand; }
 
   /**
    * This overrides the default InvokeInitialPass implementation.
    * It records the arguments before expansion.
    */
-  virtual bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
-                                 cmExecutionStatus &);
+  bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
+                         cmExecutionStatus&) CM_OVERRIDE;
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
-  virtual bool InitialPass(std::vector<std::string> const&,
-                           cmExecutionStatus &) { return false;};
-
-  /**
-   * The name of the command as specified in CMakeList.txt.
-   */
-  virtual const char* GetName() const { return "if";}
-
-  /**
-   * Succinct documentation.
-   */
-  virtual const char* GetTerseDocumentation() const
-    {
-    return "Conditionally execute a group of commands.";
-    }
-
-  /**
-   * This determines if the command is invoked when in script mode.
-   */
-  virtual bool IsScriptable() const { return true; }
-
-  /**
-   * More documentation.
-   */
-  virtual const char* GetFullDocumentation() const
-    {
-    return
-      "  if(expression)\n"
-      "    # then section.\n"
-      "    COMMAND1(ARGS ...)\n"
-      "    COMMAND2(ARGS ...)\n"
-      "    ...\n"
-      "  elseif(expression2)\n"
-      "    # elseif section.\n"
-      "    COMMAND1(ARGS ...)\n"
-      "    COMMAND2(ARGS ...)\n"
-      "    ...\n"
-      "  else(expression)\n"
-      "    # else section.\n"
-      "    COMMAND1(ARGS ...)\n"
-      "    COMMAND2(ARGS ...)\n"
-      "    ...\n"
-      "  endif(expression)\n"
-      "Evaluates the given expression.  If the result is true, the commands "
-      "in the THEN section are invoked.  Otherwise, the commands in the "
-      "else section are invoked.  The elseif and else sections are "
-      "optional. You may have multiple elseif clauses. Note that "
-      "the expression in the else and endif clause is optional. Long "
-      "expressions can be used and there is a traditional order of "
-      "precedence. "
-      "Parenthetical expressions are evaluated first followed by unary "
-      "operators such as EXISTS, COMMAND, and DEFINED. "
-      "Then any EQUAL, LESS, GREATER, STRLESS, STRGREATER, STREQUAL, MATCHES "
-      "will be evaluated. Then NOT operators and finally AND, OR operators "
-      "will be evaluated. Possible expressions are:\n"
-      "  if(<constant>)\n"
-      "True if the constant is 1, ON, YES, TRUE, Y, or a non-zero number.  "
-      "False if the constant is 0, OFF, NO, FALSE, N, IGNORE, NOTFOUND, '', "
-      "or ends in the suffix '-NOTFOUND'.  "
-      "Named boolean constants are case-insensitive.  "
-      "If the argument is not one of these constants, "
-      "it is treated as a variable:"
-      "\n"
-      "  if(<variable>)\n"
-      "True if the variable is defined to a value that is not a false "
-      "constant.  False otherwise.  "
-      "(Note macro arguments are not variables.)"
-      "\n"
-      "  if(NOT <expression>)\n"
-      "True if the expression is not true."
-      "\n"
-      "  if(<expr1> AND <expr2>)\n"
-      "True if both expressions would be considered true individually."
-      "\n"
-      "  if(<expr1> OR <expr2>)\n"
-      "True if either expression would be considered true individually."
-      "\n"
-      "  if(COMMAND command-name)\n"
-      "True if the given name is a command, macro or function that can be "
-      "invoked.\n"
-      "  if(POLICY policy-id)\n"
-      "True if the given name is an existing policy "
-      "(of the form CMP<NNNN>).\n"
-      "  if(TARGET target-name)\n"
-      "True if the given name is an existing target, built or imported.\n"
-      "  if(EXISTS file-name)\n"
-      "  if(EXISTS directory-name)\n"
-      "True if the named file or directory exists.  "
-      "Behavior is well-defined only for full paths.\n"
-      "  if(file1 IS_NEWER_THAN file2)\n"
-      "True if file1 is newer than file2 or if one of the two files "
-      "doesn't exist. "
-      "Behavior is well-defined only for full paths. "
-      "If the file time stamps are exactly the same, an "
-      "IS_NEWER_THAN comparison returns true, so that any dependent "
-      "build operations will occur in the event of a tie. "
-      "This includes the case of passing the same file name for both "
-      "file1 and file2.\n"
-      "  if(IS_DIRECTORY directory-name)\n"
-      "True if the given name is a directory.  "
-      "Behavior is well-defined only for full paths.\n"
-      "  if(IS_SYMLINK file-name)\n"
-      "True if the given name is a symbolic link.  "
-      "Behavior is well-defined only for full paths.\n"
-      "  if(IS_ABSOLUTE path)\n"
-      "True if the given path is an absolute path.\n"
-      "  if(<variable|string> MATCHES regex)\n"
-      "True if the given string or variable's value matches the given "
-      "regular expression.\n"
-      "  if(<variable|string> LESS <variable|string>)\n"
-      "  if(<variable|string> GREATER <variable|string>)\n"
-      "  if(<variable|string> EQUAL <variable|string>)\n"
-      "True if the given string or variable's value is a valid number and "
-      "the inequality or equality is true.\n"
-      "  if(<variable|string> STRLESS <variable|string>)\n"
-      "  if(<variable|string> STRGREATER <variable|string>)\n"
-      "  if(<variable|string> STREQUAL <variable|string>)\n"
-      "True if the given string or variable's value is lexicographically "
-      "less (or greater, or equal) than the string or variable on the right.\n"
-      "  if(<variable|string> VERSION_LESS <variable|string>)\n"
-      "  if(<variable|string> VERSION_EQUAL <variable|string>)\n"
-      "  if(<variable|string> VERSION_GREATER <variable|string>)\n"
-      "Component-wise integer version number comparison (version format is "
-      "major[.minor[.patch[.tweak]]]).\n"
-      "  if(DEFINED <variable>)\n"
-      "True if the given variable is defined. It does not matter if the "
-      "variable is true or false just if it has been set.\n"
-      "  if((expression) AND (expression OR (expression)))\n"
-      "The expressions inside the parenthesis are evaluated first and "
-      "then the remaining expression is evaluated as in the previous "
-      "examples. Where there are nested parenthesis the innermost are "
-      "evaluated as part of evaluating the expression "
-      "that contains them."
-      "\n"
-
-      "The if command was written very early in CMake's history, predating "
-      "the ${} variable evaluation syntax, and for convenience evaluates "
-      "variables named by its arguments as shown in the above signatures.  "
-      "Note that normal variable evaluation with ${} applies before the "
-      "if command even receives the arguments.  "
-      "Therefore code like\n"
-      "  set(var1 OFF)\n"
-      "  set(var2 \"var1\")\n"
-      "  if(${var2})\n"
-      "appears to the if command as\n"
-      "  if(var1)\n"
-      "and is evaluated according to the if(<variable>) case "
-      "documented above.  "
-      "The result is OFF which is false.  "
-      "However, if we remove the ${} from the example then the command sees\n"
-      "  if(var2)\n"
-      "which is true because var2 is defined to \"var1\" which is not "
-      "a false constant."
-      "\n"
-      "Automatic evaluation applies in the other cases whenever the "
-      "above-documented signature accepts <variable|string>:\n"
-
-      "1) The left hand argument to MATCHES is first checked to see "
-      "if it is a defined variable, if so the variable's value is "
-      "used, otherwise the original value is used. \n"
-
-      "2) If the left hand argument to MATCHES is missing it returns "
-      "false without error \n"
-
-      "3) Both left and right hand arguments to LESS GREATER EQUAL "
-      "are independently tested to see if they are defined variables, "
-      "if so their defined values are used otherwise the original "
-      "value is used. \n"
-
-      "4) Both left and right hand arguments to STRLESS STREQUAL "
-      "STRGREATER are independently tested to see if they are defined "
-      "variables, if so their defined values are used otherwise the "
-      "original value is used. \n"
-
-      "5) Both left and right hand argumemnts to VERSION_LESS "
-      "VERSION_EQUAL VERSION_GREATER are independently tested to see "
-      "if they are defined variables, if so their defined values are "
-      "used otherwise the original value is used. \n"
-
-      "6) The right hand argument to NOT is tested to see if it is a "
-      "boolean constant, if so the value is used, otherwise it is "
-      "assumed to be a variable and it is dereferenced. \n"
-
-      "7) The left and right hand arguments to AND OR are "
-      "independently tested to see if they are boolean constants, if "
-      "so they are used as such, otherwise they are assumed to be "
-      "variables and are dereferenced. \n"
-      ;
-    }
-
-  // this is a shared function for both If and Else to determine if the
-  // arguments were valid, and if so, was the response true. If there is
-  // an error, the errorString will be set.
-  static bool IsTrue(const std::vector<std::string> &args,
-    std::string &errorString, cmMakefile *mf,
-    cmake::MessageType &status);
-
-  // Get a definition from the makefile.  If it doesn't exist,
-  // return the original string.
-  static const char* GetVariableOrString(const char* str,
-                                         const cmMakefile* mf);
-
-  cmTypeMacro(cmIfCommand, cmCommand);
+  bool InitialPass(std::vector<std::string> const&,
+                   cmExecutionStatus&) CM_OVERRIDE
+  {
+    return false;
+  }
+
+  // Filter the given variable definition based on policy CMP0054.
+  static const char* GetDefinitionIfUnquoted(
+    const cmMakefile* mf, cmExpandedCommandArgument const& argument);
 };
 
-
 #endif