ENH: Using lex-based tokenizer and a simple recursive-descent parser in place of the old hand-coded parser for CMake listfiles.

6 files changed, 2719 insertions, 230 deletions

diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index 3585125..1260a55 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -15,6 +15,7 @@ cmCustomCommand.cxx
 cmCacheManager.cxx
 cmSourceGroup.cxx
 cmListFileCache.cxx
+cmListFileLexer.c
 cmGlob.cxx
 cmGlobalGenerator.cxx
 cmGlobalUnixMakefileGenerator.cxx
diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index f4e8c1f..0638b38 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -15,10 +15,16 @@
 
 =========================================================================*/
 #include "cmListFileCache.h"
+
+#include "cmListFileLexer.h"
 #include "cmSystemTools.h"
 
 #include <cmsys/RegularExpression.hxx>
 
+bool cmListFileCacheParseFunction(cmListFileLexer* lexer,
+                                  cmListFileFunction& function,
+                                  const char* filename);
+
 cmListFileCache* cmListFileCache::Instance = 0;
 
 
@@ -83,31 +89,83 @@ bool cmListFileCache::CacheFile(const char* path, bool requireProjectCommand)
     {
     return false;
     }
-    
-  std::ifstream fin(path);
-  if(!fin)
+
+  // Create the scanner.
+  cmListFileLexer* lexer = cmListFileLexer_New();
+  if(!lexer)
     {
+    cmSystemTools::Error("cmListFileCache: error allocating lexer ");
+    return false;
+    }
+
+  // Open the file.
+  if(!cmListFileLexer_SetFileName(lexer, path))
+    {
+    cmListFileLexer_Delete(lexer);
     cmSystemTools::Error("cmListFileCache: error can not open file ", path);
     return false;
     }
-  long line=0;
+
+  // Use a simple recursive-descent parser to process the token
+  // stream.
   cmListFile inFile;
   inFile.m_ModifiedTime = cmSystemTools::ModifiedTime(path);
-  bool parseError;
-  while ( fin )
+  bool parseError = false;
+  bool haveNewline = true;
+  cmListFileLexer_Token* token;
+  while(!parseError && (token = cmListFileLexer_Scan(lexer)))
     {
-    cmListFileFunction inFunction;
-    if(cmListFileCache::ParseFunction(fin, inFunction, path, parseError,
-                                      line))
+    if(token->type == cmListFileLexer_Token_Newline)
       {
-      inFunction.m_FilePath = path;
-      inFile.m_Functions.push_back(inFunction);
+      haveNewline = true;
       }
-    if (parseError)
+    else if(token->type == cmListFileLexer_Token_Identifier)
       {
-      inFile.m_ModifiedTime = 0;
+      if(haveNewline)
+        {
+        haveNewline = false;
+        cmListFileFunction inFunction;
+        inFunction.m_Name = token->text;
+        inFunction.m_FilePath = path;
+        inFunction.m_Line = token->line;
+        if(cmListFileCacheParseFunction(lexer, inFunction, path))
+          {
+          inFile.m_Functions.push_back(inFunction);
+          }
+        else
+          {
+          parseError = true;
+          }
+        }
+      else
+        {
+        cmOStringStream error;
+        error << "Error in cmake code at\n"
+              << path << ":" << token->line << ":\n"
+              << "Parse error.  Expected a newline, got \""
+              << token->text << "\".";
+        cmSystemTools::Error(error.str().c_str());
+        parseError = true;
+        }
+      }
+    else
+      {
+      cmOStringStream error;
+      error << "Error in cmake code at\n"
+            << path << ":" << token->line << ":\n"
+            << "Parse error.  Expected a command name, got \""
+            << token->text << "\".";
+      cmSystemTools::Error(error.str().c_str());
+      parseError = true;
       }
     }
+  if (parseError)
+    {
+    inFile.m_ModifiedTime = 0;
+    }
+
+  cmListFileLexer_Delete(lexer);
+
   if(requireProjectCommand)
     {
     bool hasProject = false;
@@ -146,224 +204,71 @@ void cmListFileCache::FlushCache(const char* path)
     }
 }
 
-//----------------------------------------------------------------------------
-inline bool cmListFileCachePreprocessLine(std::string& line)
+bool cmListFileCacheParseFunction(cmListFileLexer* lexer,
+                                  cmListFileFunction& function,
+                                  const char* filename)
 {
-  // Keep track of whether characters are inside a quoted argument.
-  bool quoted = false;
-  
-  // Keep track of whether the line is blank.
-  bool blank = true;
-  
-  // Loop over every character in the line.
-  std::string::iterator c;
-  for(c = line.begin(); c != line.end(); ++c)
+  // Command name has already been parsed.  Read the left paren.
+  cmListFileLexer_Token* token;
+  if(!(token = cmListFileLexer_Scan(lexer)))
     {
-    if((*c == '\\') && (c < line.end()-1))
-      {
-      // A backslash escapes any character, so skip the next
-      // character.
-      ++c;
-      
-      // We have encountered a non-whitespace character.
-      blank = false;
-      }
-    else if(*c == '"')
-      {
-      // A double-quote either starts or ends a quoted argument.
-      quoted = !quoted;
-      
-      // We have encountered a non-whitespace character.
-      blank = false;
-      }
-    else if(*c == '#' && !quoted)
-      {
-      // A pound character outside a double-quoted argument marks the
-      // rest of the line as a comment.  Skip it.
-      break;
-      }
-    else if((*c != ' ') && (*c != '\t') && (*c != '\r'))
-      {
-      // We have encountered a non-whitespace character.
-      blank = false;
-      }
+    cmOStringStream error;
+    error << "Error in cmake code at\n"
+          << filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
+          << "Parse error.  Function missing opening \"(\".";
+    cmSystemTools::Error(error.str().c_str());
+    return false;
     }
-  
-  // Erase from the comment character to the end of the line.  If no
-  // comment was present, both iterators are end() iterators and this
-  // does nothing.
-  line.erase(c, line.end());
-  
-  // Return true if there is anything useful on this line.
-  return !blank;
-}
-
-//----------------------------------------------------------------------------
-bool cmListFileCache::ParseFunction(std::ifstream& fin,
-                                    cmListFileFunction& function,
-                                    const char* filename,
-                                    bool& parseError,
-                                    long& line)
-{
-  parseError = false;
-  std::string& name = function.m_Name;
-  std::vector<cmListFileArgument>& arguments = function.m_Arguments;
-  name = "";
-  arguments = std::vector<cmListFileArgument>();
-  std::string inbuffer;
-  if(!fin)
+  if(token->type != cmListFileLexer_Token_ParenLeft)
     {
+    cmOStringStream error;
+    error << "Error in cmake code at\n"
+          << filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
+          << "Parse error.  Expected \"(\", got \""
+          << token->text << "\".";
+    cmSystemTools::Error(error.str().c_str());
     return false;
     }
-  if(cmSystemTools::GetLineFromStream(fin, inbuffer) )
+
+  // Arguments.
+  while((token = cmListFileLexer_Scan(lexer)))
     {
-    // Count this line in line numbering.
-    ++line;
-    
-    // Preprocess the line to remove comments.  Only use it if there
-    // is non-whitespace.
-    if(!cmListFileCachePreprocessLine(inbuffer))
+    if(token->type == cmListFileLexer_Token_ParenRight)
       {
-      return false;
+      return true;
       }
-    
-    // Regular expressions to match portions of a command invocation.
-    cmsys::RegularExpression oneLiner("^[ \t]*([A-Za-z_0-9]*)[ \t]*\\((.*)\\)[ \t\r]*$");
-    cmsys::RegularExpression multiLine("^[ \t]*([A-Za-z_0-9]*)[ \t]*\\((.*)$");
-    cmsys::RegularExpression lastLine("^(.*)\\)[ \t\r]*$");
-
-    // look for a oneline fun(arg arg2) 
-    if(oneLiner.find(inbuffer.c_str()))
+    else if(token->type == cmListFileLexer_Token_Identifier ||
+            token->type == cmListFileLexer_Token_ArgumentUnquoted)
       {
-      // the arguments are the second match
-      std::string args = oneLiner.match(2);
-      name = oneLiner.match(1);
-      // break up the arguments
-      cmListFileCache::GetArguments(args, arguments);
-        function.m_Line = line;
-      return true;
+      cmListFileArgument a(cmSystemTools::RemoveEscapes(token->text),
+                           false);
+      function.m_Arguments.push_back(a);
       }
-    // look for a start of a multiline with no trailing ")"  fun(arg arg2 
-    else if(multiLine.find(inbuffer.c_str()))
+    else if(token->type == cmListFileLexer_Token_ArgumentQuoted)
       {
-      name = multiLine.match(1);
-      std::string args = multiLine.match(2);
-      cmListFileCache::GetArguments(args, arguments);
-      function.m_Line = line;
-      // Read lines until the closing paren is hit
-      bool done = false;
-      while(!done)
-        {
-        // read lines until the end paren is found
-        if(cmSystemTools::GetLineFromStream(fin, inbuffer) )
-          {
-          // Count this line in line numbering.
-          ++line;
-          
-          // Preprocess the line to remove comments.  Only use it if there
-          // is non-whitespace.
-          if(!cmListFileCachePreprocessLine(inbuffer))
-            {
-            continue;
-            }
-    
-          // Is this the last line?
-          if(lastLine.find(inbuffer.c_str()))
-            {
-            done = true;
-            std::string gargs = lastLine.match(1);
-            cmListFileCache::GetArguments(gargs, arguments);
-            }
-          else
-            {
-            cmListFileCache::GetArguments(inbuffer, arguments);
-            }
-          }
-        else
-          {
-          parseError = true;
-          cmOStringStream error;
-          error << "Error in cmake code at\n"
-                << filename << ":" << line << ":\n"
-                << "Parse error.  Function missing ending \")\".";
-          cmSystemTools::Error(error.str().c_str());
-          return false;
-          }
-        }
-      return true;
+      cmListFileArgument a(cmSystemTools::RemoveEscapes(token->text),
+                           true);
+      function.m_Arguments.push_back(a);
       }
-    else
+    else if(token->type != cmListFileLexer_Token_Newline)
       {
-      parseError = true;
+      // Error.
       cmOStringStream error;
       error << "Error in cmake code at\n"
-            << filename << ":" << line << ":\n"
-            << "Parse error.";
+            << filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
+            << "Parse error.  Function missing ending \")\".  "
+            << "Instead found \"" << token->text << "\".";
       cmSystemTools::Error(error.str().c_str());
       return false;
       }
     }
-  return false;
-
-}
 
-void cmListFileCache::GetArguments(std::string& line,
-                                 std::vector<cmListFileArgument>& arguments)
-{
-  // Match a normal argument (not quoted, no spaces).
-  cmsys::RegularExpression normalArgument("[ \t]*(([^ \t\r\\]|[\\].)+)[ \t\r]*");
-  // Match a quoted argument (surrounded by double quotes, spaces allowed).
-  cmsys::RegularExpression quotedArgument("[ \t]*(\"([^\"\\]|[\\].)*\")[ \t\r]*");
-
-  bool done = false;
-  while(!done)
-    {
-    std::string arg;
-    std::string::size_type endpos=0;
-    bool quoted = false;
-    bool foundQuoted = quotedArgument.find(line.c_str());
-    bool foundNormal = normalArgument.find(line.c_str());
+  cmOStringStream error;
+  error << "Error in cmake code at\n"
+        << filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
+        << "Parse error.  Function missing ending \")\".  "
+        << "End of file reached.";
+  cmSystemTools::Error(error.str().c_str());
 
-    if(foundQuoted && foundNormal)
-      {
-      // Both matches were found.  Take the earlier one.
-      // Favor double-quoted version if there is a tie.
-      if(normalArgument.start(1) < quotedArgument.start(1))
-        {
-        arg = normalArgument.match(1);
-        endpos = normalArgument.end(1);
-        }
-      else
-        {
-        arg = quotedArgument.match(1);
-        endpos = quotedArgument.end(1);
-        // Strip off the double quotes on the ends.
-        arg = arg.substr(1, arg.length()-2);
-        quoted = true;
-        }
-      }    
-    else if(foundQuoted)
-      {
-      arg = quotedArgument.match(1);
-      endpos = quotedArgument.end(1);
-      // Strip off the double quotes on the ends.
-      arg = arg.substr(1, arg.length()-2);
-      quoted = true;
-      }
-    else if(foundNormal)
-      {
-      arg = normalArgument.match(1);
-      endpos = normalArgument.end(1);
-      }
-    else
-      {
-      done = true;
-      }
-    if(!done)
-      {
-      cmListFileArgument a(cmSystemTools::RemoveEscapes(arg.c_str()), quoted);
-      arguments.push_back(a);
-      line = line.substr(endpos, line.length() - endpos);
-      }
-    }
+  return false;
 }
diff --git a/Source/cmListFileCache.h b/Source/cmListFileCache.h
index 473fb62..8dc371f 100644
--- a/Source/cmListFileCache.h
+++ b/Source/cmListFileCache.h
@@ -79,25 +79,7 @@ public:
 
   //! Flush cache file out of cache.
   void FlushCache(const char* path);
-    
-  /**
-   * Read a CMake command (or function) from an input file.  This
-   * returns the name of the function and a list of its 
-   * arguments.  The last argument is the name of the file that 
-   * the ifstream points to, and is used for debug info only.
-   */
-  static bool ParseFunction(std::ifstream&, cmListFileFunction& function,
-                            const char* filename, bool& parseError,
-                            long& line);
 
-  /**
-   *  Extract white-space separated arguments from a string.
-   *  Double quoted strings are accepted with spaces.
-   *  This is called by ParseFunction.
-   */
-  static void GetArguments(std::string& line,
-                           std::vector<cmListFileArgument>& arguments);
-  
 private:
   // Cache the file
   bool CacheFile(const char* path, bool requireProjectCommand);
@@ -107,5 +89,4 @@ private:
   static cmListFileCache* Instance; // singelton pointer
 };
 
-
 #endif
diff --git a/Source/cmListFileLexer.c b/Source/cmListFileLexer.c
new file mode 100644
index 0000000..8c7e066
--- /dev/null
+++ b/Source/cmListFileLexer.c
@@ -0,0 +1,2216 @@
+#line 2 "cmListFileLexer.c"
+
+#line 4 "cmListFileLexer.c"
+
+#define  YY_INT_ALIGNED short int
+
+/* A lexical scanner generated by flex */
+
+#define FLEX_SCANNER
+#define YY_FLEX_MAJOR_VERSION 2
+#define YY_FLEX_MINOR_VERSION 5
+#define YY_FLEX_SUBMINOR_VERSION 31
+#if YY_FLEX_SUBMINOR_VERSION > 0
+#define FLEX_BETA
+#endif
+
+/* First, we deal with  platform-specific or compiler-specific issues. */
+
+/* begin standard C headers. */
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/* end standard C headers. */
+
+/* flex integer type definitions */
+
+#ifndef FLEXINT_H
+#define FLEXINT_H
+
+/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
+
+#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+#include <inttypes.h>
+typedef int8_t flex_int8_t;
+typedef uint8_t flex_uint8_t;
+typedef int16_t flex_int16_t;
+typedef uint16_t flex_uint16_t;
+typedef int32_t flex_int32_t;
+typedef uint32_t flex_uint32_t;
+#else
+typedef signed char flex_int8_t;
+typedef short int flex_int16_t;
+typedef int flex_int32_t;
+typedef unsigned char flex_uint8_t; 
+typedef unsigned short int flex_uint16_t;
+typedef unsigned int flex_uint32_t;
+#endif /* ! C99 */
+
+/* Limits of integral types. */
+#ifndef INT8_MIN
+#define INT8_MIN               (-128)
+#endif
+#ifndef INT16_MIN
+#define INT16_MIN              (-32767-1)
+#endif
+#ifndef INT32_MIN
+#define INT32_MIN              (-2147483647-1)
+#endif
+#ifndef INT8_MAX
+#define INT8_MAX               (127)
+#endif
+#ifndef INT16_MAX
+#define INT16_MAX              (32767)
+#endif
+#ifndef INT32_MAX
+#define INT32_MAX              (2147483647)
+#endif
+#ifndef UINT8_MAX
+#define UINT8_MAX              (255U)
+#endif
+#ifndef UINT16_MAX
+#define UINT16_MAX             (65535U)
+#endif
+#ifndef UINT32_MAX
+#define UINT32_MAX             (4294967295U)
+#endif
+
+#endif /* ! FLEXINT_H */
+
+#ifdef __cplusplus
+
+/* The "const" storage-class-modifier is valid. */
+#define YY_USE_CONST
+
+#else   /* ! __cplusplus */
+
+#if __STDC__
+
+#define YY_USE_CONST
+
+#endif  /* __STDC__ */
+#endif  /* ! __cplusplus */
+
+#ifdef YY_USE_CONST
+#define yyconst const
+#else
+#define yyconst
+#endif
+
+/* Returned upon end-of-file. */
+#define YY_NULL 0
+
+/* Promotes a possibly negative, possibly signed char to an unsigned
+ * integer for use as an array index.  If the signed char is negative,
+ * we want to instead treat it as an 8-bit unsigned char, hence the
+ * double cast.
+ */
+#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+
+/* An opaque pointer. */
+#ifndef YY_TYPEDEF_YY_SCANNER_T
+#define YY_TYPEDEF_YY_SCANNER_T
+typedef void* yyscan_t;
+#endif
+
+/* For convenience, these vars (plus the bison vars far below)
+   are macros in the reentrant scanner. */
+#define yyin yyg->yyin_r
+#define yyout yyg->yyout_r
+#define yyextra yyg->yyextra_r
+#define yyleng yyg->yyleng_r
+#define yytext yyg->yytext_r
+#define yylineno (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno)
+#define yycolumn (YY_CURRENT_BUFFER_LVALUE->yy_bs_column)
+#define yy_flex_debug yyg->yy_flex_debug_r
+
+int yylex_init (yyscan_t* scanner);
+
+/* Enter a start condition.  This macro really ought to take a parameter,
+ * but we do it the disgusting crufty way forced on us by the ()-less
+ * definition of BEGIN.
+ */
+#define BEGIN yyg->yy_start = 1 + 2 *
+
+/* Translate the current start state into a value that can be later handed
+ * to BEGIN to return to the state.  The YYSTATE alias is for lex
+ * compatibility.
+ */
+#define YY_START ((yyg->yy_start - 1) / 2)
+#define YYSTATE YY_START
+
+/* Action number for EOF rule of a given start state. */
+#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
+
+/* Special action meaning "start processing a new file". */
+#define YY_NEW_FILE yyrestart(yyin ,yyscanner )
+
+#define YY_END_OF_BUFFER_CHAR 0
+
+/* Size of default input buffer. */
+#ifndef YY_BUF_SIZE
+#define YY_BUF_SIZE 16384
+#endif
+
+#ifndef YY_TYPEDEF_YY_BUFFER_STATE
+#define YY_TYPEDEF_YY_BUFFER_STATE
+typedef struct yy_buffer_state *YY_BUFFER_STATE;
+#endif
+
+#define EOB_ACT_CONTINUE_SCAN 0
+#define EOB_ACT_END_OF_FILE 1
+#define EOB_ACT_LAST_MATCH 2
+
+    /* Note: We specifically omit the test for yy_rule_can_match_eol because it requires
+     *       access to the local variable yy_act. Since yyless() is a macro, it would break
+     *       existing scanners that call yyless() from OUTSIDE yylex. 
+     *       One obvious solution it to make yy_act a global. I tried that, and saw
+     *       a 5% performance hit in a non-yylineno scanner, because yy_act is
+     *       normally declared as a register variable-- so it is not worth it.
+     */
+    #define  YY_LESS_LINENO(n) \
+            do { \
+                int yyl;\
+                for ( yyl = n; yyl < yyleng; ++yyl )\
+                    if ( yytext[yyl] == '\n' )\
+                        --yylineno;\
+            }while(0)
+    
+/* Return all but the first "n" matched characters back to the input stream. */
+#define yyless(n) \
+        do \
+                { \
+                /* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+                *yy_cp = yyg->yy_hold_char; \
+                YY_RESTORE_YY_MORE_OFFSET \
+                yyg->yy_c_buf_p = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
+                YY_DO_BEFORE_ACTION; /* set up yytext again */ \
+                } \
+        while ( 0 )
+
+#define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner )
+
+/* The following is because we cannot portably get our hands on size_t
+ * (without autoconf's help, which isn't available because we want
+ * flex-generated scanners to compile on their own).
+ */
+
+#ifndef YY_TYPEDEF_YY_SIZE_T
+#define YY_TYPEDEF_YY_SIZE_T
+typedef unsigned int yy_size_t;
+#endif
+
+#ifndef YY_STRUCT_YY_BUFFER_STATE
+#define YY_STRUCT_YY_BUFFER_STATE
+struct yy_buffer_state
+        {
+        FILE *yy_input_file;
+
+        char *yy_ch_buf;                /* input buffer */
+        char *yy_buf_pos;               /* current position in input buffer */
+
+        /* Size of input buffer in bytes, not including room for EOB
+         * characters.
+         */
+        yy_size_t yy_buf_size;
+
+        /* Number of characters read into yy_ch_buf, not including EOB
+         * characters.
+         */
+        int yy_n_chars;
+
+        /* Whether we "own" the buffer - i.e., we know we created it,
+         * and can realloc() it to grow it, and should free() it to
+         * delete it.
+         */
+        int yy_is_our_buffer;
+
+        /* Whether this is an "interactive" input source; if so, and
+         * if we're using stdio for input, then we want to use getc()
+         * instead of fread(), to make sure we stop fetching input after
+         * each newline.
+         */
+        int yy_is_interactive;
+
+        /* Whether we're considered to be at the beginning of a line.
+         * If so, '^' rules will be active on the next match, otherwise
+         * not.
+         */
+        int yy_at_bol;
+
+    int yy_bs_lineno; /**< The line count. */
+    int yy_bs_column; /**< The column count. */
+    
+        /* Whether to try to fill the input buffer when we reach the
+         * end of it.
+         */
+        int yy_fill_buffer;
+
+        int yy_buffer_status;
+
+#define YY_BUFFER_NEW 0
+#define YY_BUFFER_NORMAL 1
+        /* When an EOF's been seen but there's still some text to process
+         * then we mark the buffer as YY_EOF_PENDING, to indicate that we
+         * shouldn't try reading from the input source any more.  We might
+         * still have a bunch of tokens to match, though, because of
+         * possible backing-up.
+         *
+         * When we actually see the EOF, we change the status to "new"
+         * (via yyrestart()), so that the user can continue scanning by
+         * just pointing yyin at a new input file.
+         */
+#define YY_BUFFER_EOF_PENDING 2
+
+        };
+#endif /* !YY_STRUCT_YY_BUFFER_STATE */
+
+/* We provide macros for accessing buffer states in case in the
+ * future we want to put the buffer states in a more general
+ * "scanner state".
+ *
+ * Returns the top of the stack, or NULL.
+ */
+#define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \
+                          ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
+                          : NULL)
+
+/* Same as previous macro, but useful when we know that the buffer stack is not
+ * NULL or when we need an lvalue. For internal use only.
+ */
+#define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
+
+void yyrestart (FILE *input_file ,yyscan_t yyscanner );
+void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
+void yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
+void yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
+void yypop_buffer_state (yyscan_t yyscanner );
+
+static void yyensure_buffer_stack (yyscan_t yyscanner );
+static void yy_load_buffer_state (yyscan_t yyscanner );
+static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
+
+#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
+
+YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
+
+void *yyalloc (yy_size_t ,yyscan_t yyscanner );
+void *yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
+void yyfree (void * ,yyscan_t yyscanner );
+
+#define yy_new_buffer yy_create_buffer
+
+#define yy_set_interactive(is_interactive) \
+        { \
+        if ( ! YY_CURRENT_BUFFER ){ \
+        yyensure_buffer_stack (yyscanner); \
+                YY_CURRENT_BUFFER_LVALUE =    \
+            yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+        } \
+        YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
+        }
+
+#define yy_set_bol(at_bol) \
+        { \
+        if ( ! YY_CURRENT_BUFFER ){\
+        yyensure_buffer_stack (yyscanner); \
+                YY_CURRENT_BUFFER_LVALUE =    \
+            yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+        } \
+        YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
+        }
+
+#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
+
+/* Begin user sect3 */
+
+#define yywrap(n) 1
+#define YY_SKIP_YYWRAP
+
+typedef unsigned char YY_CHAR;
+
+typedef int yy_state_type;
+
+#define yytext_ptr yytext_r
+
+static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
+static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
+static int yy_get_next_buffer (yyscan_t yyscanner );
+static void yy_fatal_error (yyconst char msg[] ,yyscan_t yyscanner );
+
+/* Done after the current pattern has been matched and before the
+ * corresponding action - sets up yytext.
+ */
+#define YY_DO_BEFORE_ACTION \
+        yyg->yytext_ptr = yy_bp; \
+        yyleng = (size_t) (yy_cp - yy_bp); \
+        yyg->yy_hold_char = *yy_cp; \
+        *yy_cp = '\0'; \
+        yyg->yy_c_buf_p = yy_cp;
+
+#define YY_NUM_RULES 14
+#define YY_END_OF_BUFFER 15
+/* This struct is not used in this scanner,
+   but its presence is necessary. */
+struct yy_trans_info
+        {
+        flex_int32_t yy_verify;
+        flex_int32_t yy_nxt;
+        };
+static yyconst flex_int16_t yy_accept[28] =
+    {   0,
+        0,    0,    0,    0,   15,    6,   12,    1,    7,    2,
+        3,    4,    6,   13,    8,    9,   10,   11,    6,    0,
+        2,    2,    2,    5,    8,    0,    0
+    } ;
+
+static yyconst flex_int32_t yy_ec[256] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
+        1,    1,    2,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    2,    1,    4,    5,    1,    1,    1,    1,    6,
+        7,    1,    1,    1,    1,    1,    1,    8,    8,    8,
+        8,    8,    8,    8,    8,    8,    8,    1,    1,    1,
+        1,    1,    1,    1,    9,    9,    9,    9,    9,    9,
+        9,    9,    9,    9,    9,    9,    9,    9,    9,    9,
+        9,    9,    9,    9,    9,    9,    9,    9,    9,    9,
+        1,   10,    1,    1,    9,    1,    9,    9,    9,    9,
+
+        9,    9,    9,    9,    9,    9,    9,    9,    9,    9,
+        9,    9,    9,    9,    9,    9,    9,    9,    9,    9,
+        9,    9,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        1,    1,    1,    1,    1
+    } ;
+
+static yyconst flex_int32_t yy_meta[11] =
+    {   0,
+        1,    2,    3,    4,    1,    2,    2,    1,    1,    1
+    } ;
+
+static yyconst flex_int16_t yy_base[33] =
+    {   0,
+        0,    0,    8,   16,   21,    7,   69,   69,   69,   26,
+       69,   69,   36,   45,    6,   69,   69,   50,    5,    0,
+        0,    0,    0,    0,    4,    0,   69,   54,   12,   58,
+       60,   64
+    } ;
+
+static yyconst flex_int16_t yy_def[33] =
+    {   0,
+       27,    1,   28,   28,   27,   29,   27,   27,   27,   27,
+       27,   27,   27,   29,   30,   27,   27,   30,   29,   14,
+       10,   31,   32,   13,   30,   18,    0,   27,   27,   27,
+       27,   27
+    } ;
+
+static yyconst flex_int16_t yy_nxt[80] =
+    {   0,
+        6,    7,    8,    9,   10,   11,   12,    6,   13,   14,
+       16,   17,   19,   26,   20,   26,   20,   18,   16,   17,
+       27,   27,   27,   27,   27,   18,   21,   22,   27,   22,
+       21,   22,   22,   21,   21,   23,   19,   27,   27,   27,
+       19,   27,   27,   24,   24,   20,   19,   27,   19,   27,
+       19,   19,   25,   25,   15,   15,   15,   15,   25,   25,
+       22,   22,   27,   22,   21,   21,   27,   21,    5,   27,
+       27,   27,   27,   27,   27,   27,   27,   27,   27
+    } ;
+
+static yyconst flex_int16_t yy_chk[80] =
+    {   0,
+        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
+        3,    3,   29,   25,   19,   15,    6,    3,    4,    4,
+        5,    0,    0,    0,    0,    4,   10,   10,    0,   10,
+       10,   10,   10,   10,   10,   10,   13,    0,    0,    0,
+       13,    0,    0,   13,   13,   13,   14,    0,   14,    0,
+       14,   14,   18,   18,   28,   28,   28,   28,   30,   30,
+       31,   31,    0,   31,   32,   32,    0,   32,   27,   27,
+       27,   27,   27,   27,   27,   27,   27,   27,   27
+    } ;
+
+/* Table of booleans, true if rule could match eol. */
+static yyconst flex_int32_t yy_rule_can_match_eol[15] =
+    {   0,
+1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0,     };
+
+/* The intent behind this definition is that it'll catch
+ * any uses of REJECT which flex missed.
+ */
+#define REJECT reject_used_but_not_detected
+#define yymore() yymore_used_but_not_detected
+#define YY_MORE_ADJ 0
+#define YY_RESTORE_YY_MORE_OFFSET
+#line 1 "cmListFileLexer.l"
+#line 2 "cmListFileLexer.l"
+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+/* Run flex like this: flex -ocmListFileLexer.c cmListFileLexer.l  */
+
+/* Disable features we do not need. */
+#define YY_NEVER_INTERACTIVE 1
+#define YY_NO_UNPUT 1
+#define ECHO
+
+/* Setup the proper yylex declaration.  */
+#define YY_DECL int yylex (yyscan_t yyscanner, cmListFileLexer* lexer)
+
+/* Disable some warnings.  */
+#if defined(_MSC_VER)
+# pragma warning ( disable : 4127 )
+# pragma warning ( disable : 4131 )
+# pragma warning ( disable : 4244 )
+# pragma warning ( disable : 4251 )
+# pragma warning ( disable : 4267 )
+# pragma warning ( disable : 4305 )
+# pragma warning ( disable : 4309 )
+# pragma warning ( disable : 4706 )
+# pragma warning ( disable : 4786 )
+#endif
+
+#include "cmListFileLexer.h"
+
+/*--------------------------------------------------------------------------*/
+struct cmListFileLexer_s
+{
+  cmListFileLexer_Token token;
+  int line;
+  int column;
+  int size;
+  FILE* file;
+  yyscan_t scanner;
+};
+
+static void cmListFileLexerSetToken(cmListFileLexer* lexer, const char* text,
+                                    int length);
+static void cmListFileLexerAppend(cmListFileLexer* lexer, const char* text,
+                                  int length);
+
+/*--------------------------------------------------------------------------*/
+
+#line 526 "cmListFileLexer.c"
+
+#define INITIAL 0
+#define STRING 1
+
+#ifndef YY_NO_UNISTD_H
+/* Special case for "unistd.h", since it is non-ANSI. We include it way
+ * down here because we want the user's section 1 to have been scanned first.
+ * The user has a chance to override it with an option.
+ */
+#include <unistd.h>
+#endif
+
+#ifndef YY_EXTRA_TYPE
+#define YY_EXTRA_TYPE void *
+#endif
+
+/* Holds the entire state of the reentrant scanner. */
+struct yyguts_t
+    {
+
+    /* User-defined. Not touched by flex. */
+    YY_EXTRA_TYPE yyextra_r;
+
+    /* The rest are the same as the globals declared in the non-reentrant scanner. */
+    FILE *yyin_r, *yyout_r;
+    size_t yy_buffer_stack_top; /**< index of top of stack. */
+    size_t yy_buffer_stack_max; /**< capacity of stack. */
+    YY_BUFFER_STATE * yy_buffer_stack; /**< Stack as an array. */
+    char yy_hold_char;
+    int yy_n_chars;
+    int yyleng_r;
+    char *yy_c_buf_p;
+    int yy_init;
+    int yy_start;
+    int yy_did_buffer_switch_on_eof;
+    int yy_start_stack_ptr;
+    int yy_start_stack_depth;
+    int *yy_start_stack;
+    yy_state_type yy_last_accepting_state;
+    char* yy_last_accepting_cpos;
+
+    int yylineno_r;
+    int yy_flex_debug_r;
+
+    char *yytext_r;
+    int yy_more_flag;
+    int yy_more_len;
+
+    }; /* end struct yyguts_t */
+
+/* Accessor methods to globals.
+   These are made visible to non-reentrant scanners for convenience. */
+
+int yylex_destroy (yyscan_t yyscanner );
+
+int yyget_debug (yyscan_t yyscanner );
+
+void yyset_debug (int debug_flag ,yyscan_t yyscanner );
+
+YY_EXTRA_TYPE yyget_extra (yyscan_t yyscanner );
+
+void yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+
+FILE *yyget_in (yyscan_t yyscanner );
+
+void yyset_in  (FILE * in_str ,yyscan_t yyscanner );
+
+FILE *yyget_out (yyscan_t yyscanner );
+
+void yyset_out  (FILE * out_str ,yyscan_t yyscanner );
+
+int yyget_leng (yyscan_t yyscanner );
+
+char *yyget_text (yyscan_t yyscanner );
+
+int yyget_lineno (yyscan_t yyscanner );
+
+void yyset_lineno (int line_number ,yyscan_t yyscanner );
+
+/* Macros after this point can all be overridden by user definitions in
+ * section 1.
+ */
+
+#ifndef YY_SKIP_YYWRAP
+#ifdef __cplusplus
+extern "C" int yywrap (yyscan_t yyscanner );
+#else
+extern int yywrap (yyscan_t yyscanner );
+#endif
+#endif
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+#endif
+
+#ifndef YY_NO_INPUT
+
+#ifdef __cplusplus
+static int yyinput (yyscan_t yyscanner );
+#else
+static int input (yyscan_t yyscanner );
+#endif
+
+#endif
+
+/* Amount of stuff to slurp up with each read. */
+#ifndef YY_READ_BUF_SIZE
+#define YY_READ_BUF_SIZE 8192
+#endif
+
+/* Copy whatever the last rule matched to the standard output. */
+#ifndef ECHO
+/* This used to be an fputs(), but since the string might contain NUL's,
+ * we now use fwrite().
+ */
+#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
+#endif
+
+/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
+ * is returned in "result".
+ */
+#ifndef YY_INPUT
+#define YY_INPUT(buf,result,max_size) \
+        if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
+                { \
+                int c = '*'; \
+                size_t n; \
+                for ( n = 0; n < max_size && \
+                             (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
+                        buf[n] = (char) c; \
+                if ( c == '\n' ) \
+                        buf[n++] = (char) c; \
+                if ( c == EOF && ferror( yyin ) ) \
+                        YY_FATAL_ERROR( "input in flex scanner failed" ); \
+                result = n; \
+                } \
+        else \
+                { \
+                errno=0; \
+                while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+                        { \
+                        if( errno != EINTR) \
+                                { \
+                                YY_FATAL_ERROR( "input in flex scanner failed" ); \
+                                break; \
+                                } \
+                        errno=0; \
+                        clearerr(yyin); \
+                        } \
+                }\
+\
+
+#endif
+
+/* No semi-colon after return; correct usage is to write "yyterminate();" -
+ * we don't want an extra ';' after the "return" because that will cause
+ * some compilers to complain about unreachable statements.
+ */
+#ifndef yyterminate
+#define yyterminate() return YY_NULL
+#endif
+
+/* Number of entries by which start-condition stack grows. */
+#ifndef YY_START_STACK_INCR
+#define YY_START_STACK_INCR 25
+#endif
+
+/* Report a fatal error. */
+#ifndef YY_FATAL_ERROR
+#define YY_FATAL_ERROR(msg) yy_fatal_error( msg , yyscanner)
+#endif
+
+/* end tables serialization structures and prototypes */
+
+/* Default declaration of generated scanner - a define so the user can
+ * easily add parameters.
+ */
+#ifndef YY_DECL
+#define YY_DECL_IS_OURS 1
+
+extern int yylex (yyscan_t yyscanner);
+
+#define YY_DECL int yylex (yyscan_t yyscanner)
+#endif /* !YY_DECL */
+
+/* Code executed at the beginning of each rule, after yytext and yyleng
+ * have been set up.
+ */
+#ifndef YY_USER_ACTION
+#define YY_USER_ACTION
+#endif
+
+/* Code executed at the end of each rule. */
+#ifndef YY_BREAK
+#define YY_BREAK break;
+#endif
+
+#define YY_RULE_SETUP \
+        YY_USER_ACTION
+
+/** The main scanner function which does all the work.
+ */
+YY_DECL
+{
+        register yy_state_type yy_current_state;
+        register char *yy_cp, *yy_bp;
+        register int yy_act;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+#line 68 "cmListFileLexer.l"
+
+
+#line 745 "cmListFileLexer.c"
+
+        if ( yyg->yy_init )
+                {
+                yyg->yy_init = 0;
+
+#ifdef YY_USER_INIT
+                YY_USER_INIT;
+#endif
+
+                if ( ! yyg->yy_start )
+                        yyg->yy_start = 1;      /* first start state */
+
+                if ( ! yyin )
+                        yyin = stdin;
+
+                if ( ! yyout )
+                        yyout = stdout;
+
+                if ( ! YY_CURRENT_BUFFER ) {
+                        yyensure_buffer_stack (yyscanner);
+                        YY_CURRENT_BUFFER_LVALUE =
+                                yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+                }
+
+                yy_load_buffer_state(yyscanner );
+                }
+
+        while ( 1 )             /* loops until end-of-file is reached */
+                {
+                yy_cp = yyg->yy_c_buf_p;
+
+                /* Support of yytext. */
+                *yy_cp = yyg->yy_hold_char;
+
+                /* yy_bp points to the position in yy_ch_buf of the start of
+                 * the current run.
+                 */
+                yy_bp = yy_cp;
+
+                yy_current_state = yyg->yy_start;
+yy_match:
+                do
+                        {
+                        register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
+                        if ( yy_accept[yy_current_state] )
+                                {
+                                yyg->yy_last_accepting_state = yy_current_state;
+                                yyg->yy_last_accepting_cpos = yy_cp;
+                                }
+                        while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+                                {
+                                yy_current_state = (int) yy_def[yy_current_state];
+                                if ( yy_current_state >= 28 )
+                                        yy_c = yy_meta[(unsigned int) yy_c];
+                                }
+                        yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+                        ++yy_cp;
+                        }
+                while ( yy_base[yy_current_state] != 69 );
+
+yy_find_action:
+                yy_act = yy_accept[yy_current_state];
+                if ( yy_act == 0 )
+                        { /* have to back up */
+                        yy_cp = yyg->yy_last_accepting_cpos;
+                        yy_current_state = yyg->yy_last_accepting_state;
+                        yy_act = yy_accept[yy_current_state];
+                        }
+
+                YY_DO_BEFORE_ACTION;
+
+                if ( yy_act != YY_END_OF_BUFFER && yy_rule_can_match_eol[yy_act] )
+                        {
+                        int yyl;
+                        for ( yyl = 0; yyl < yyleng; ++yyl )
+                                if ( yytext[yyl] == '\n' )
+                                           
+    do{ yylineno++;
+        yycolumn=0;
+    }while(0)
+;
+                        }
+
+do_action:      /* This label is used only to access EOF actions. */
+
+                switch ( yy_act )
+        { /* beginning of action switch */
+                        case 0: /* must back up */
+                        /* undo the effects of YY_DO_BEFORE_ACTION */
+                        *yy_cp = yyg->yy_hold_char;
+                        yy_cp = yyg->yy_last_accepting_cpos;
+                        yy_current_state = yyg->yy_last_accepting_state;
+                        goto yy_find_action;
+
+case 1:
+/* rule 1 can match eol */
+YY_RULE_SETUP
+#line 70 "cmListFileLexer.l"
+{
+  lexer->token.type = cmListFileLexer_Token_Newline;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  ++lexer->line;
+  lexer->column = 1;
+  return 1;
+}
+        YY_BREAK
+case 2:
+YY_RULE_SETUP
+#line 78 "cmListFileLexer.l"
+{
+  lexer->column += yyleng;
+}
+        YY_BREAK
+case 3:
+YY_RULE_SETUP
+#line 82 "cmListFileLexer.l"
+{
+  lexer->token.type = cmListFileLexer_Token_ParenLeft;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+        YY_BREAK
+case 4:
+YY_RULE_SETUP
+#line 89 "cmListFileLexer.l"
+{
+  lexer->token.type = cmListFileLexer_Token_ParenRight;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+        YY_BREAK
+case 5:
+YY_RULE_SETUP
+#line 96 "cmListFileLexer.l"
+{
+  lexer->token.type = cmListFileLexer_Token_Identifier;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+        YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 103 "cmListFileLexer.l"
+{
+  lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+        YY_BREAK
+case 7:
+YY_RULE_SETUP
+#line 110 "cmListFileLexer.l"
+{
+  lexer->token.type = cmListFileLexer_Token_ArgumentQuoted;
+  cmListFileLexerSetToken(lexer, "", 0);
+  lexer->column += yyleng;
+  BEGIN(STRING);
+}
+        YY_BREAK
+case 8:
+/* rule 8 can match eol */
+YY_RULE_SETUP
+#line 117 "cmListFileLexer.l"
+{
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+}
+        YY_BREAK
+case 9:
+/* rule 9 can match eol */
+YY_RULE_SETUP
+#line 122 "cmListFileLexer.l"
+{
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  ++lexer->line;
+  lexer->column = 1;
+}
+        YY_BREAK
+case 10:
+YY_RULE_SETUP
+#line 128 "cmListFileLexer.l"
+{
+  lexer->column += yyleng;
+  BEGIN(INITIAL);
+  return 1;
+}
+        YY_BREAK
+case 11:
+YY_RULE_SETUP
+#line 134 "cmListFileLexer.l"
+{
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+}
+        YY_BREAK
+case 12:
+YY_RULE_SETUP
+#line 139 "cmListFileLexer.l"
+{
+  lexer->column += yyleng;
+}
+        YY_BREAK
+case 13:
+YY_RULE_SETUP
+#line 143 "cmListFileLexer.l"
+{
+  lexer->token.type = cmListFileLexer_Token_Error;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+        YY_BREAK
+case YY_STATE_EOF(INITIAL):
+case YY_STATE_EOF(STRING):
+#line 150 "cmListFileLexer.l"
+{
+  lexer->token.type = cmListFileLexer_Token_None;
+  cmListFileLexerSetToken(lexer, 0, 0);
+  return 0;
+}
+        YY_BREAK
+case 14:
+YY_RULE_SETUP
+#line 156 "cmListFileLexer.l"
+ECHO;
+        YY_BREAK
+#line 976 "cmListFileLexer.c"
+
+        case YY_END_OF_BUFFER:
+                {
+                /* Amount of text matched not including the EOB char. */
+                int yy_amount_of_matched_text = (int) (yy_cp - yyg->yytext_ptr) - 1;
+
+                /* Undo the effects of YY_DO_BEFORE_ACTION. */
+                *yy_cp = yyg->yy_hold_char;
+                YY_RESTORE_YY_MORE_OFFSET
+
+                if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
+                        {
+                        /* We're scanning a new file or input source.  It's
+                         * possible that this happened because the user
+                         * just pointed yyin at a new source and called
+                         * yylex().  If so, then we have to assure
+                         * consistency between YY_CURRENT_BUFFER and our
+                         * globals.  Here is the right place to do so, because
+                         * this is the first action (other than possibly a
+                         * back-up) that will match for the new input source.
+                         */
+                        yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+                        YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
+                        YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
+                        }
+
+                /* Note that here we test for yy_c_buf_p "<=" to the position
+                 * of the first EOB in the buffer, since yy_c_buf_p will
+                 * already have been incremented past the NUL character
+                 * (since all states make transitions on EOB to the
+                 * end-of-buffer state).  Contrast this with the test
+                 * in input().
+                 */
+                if ( yyg->yy_c_buf_p <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] )
+                        { /* This was really a NUL. */
+                        yy_state_type yy_next_state;
+
+                        yyg->yy_c_buf_p = yyg->yytext_ptr + yy_amount_of_matched_text;
+
+                        yy_current_state = yy_get_previous_state( yyscanner );
+
+                        /* Okay, we're now positioned to make the NUL
+                         * transition.  We couldn't have
+                         * yy_get_previous_state() go ahead and do it
+                         * for us because it doesn't know how to deal
+                         * with the possibility of jamming (and we don't
+                         * want to build jamming into it because then it
+                         * will run more slowly).
+                         */
+
+                        yy_next_state = yy_try_NUL_trans( yy_current_state , yyscanner);
+
+                        yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+
+                        if ( yy_next_state )
+                                {
+                                /* Consume the NUL. */
+                                yy_cp = ++yyg->yy_c_buf_p;
+                                yy_current_state = yy_next_state;
+                                goto yy_match;
+                                }
+
+                        else
+                                {
+                                yy_cp = yyg->yy_c_buf_p;
+                                goto yy_find_action;
+                                }
+                        }
+
+                else switch ( yy_get_next_buffer( yyscanner ) )
+                        {
+                        case EOB_ACT_END_OF_FILE:
+                                {
+                                yyg->yy_did_buffer_switch_on_eof = 0;
+
+                                if ( yywrap(yyscanner ) )
+                                        {
+                                        /* Note: because we've taken care in
+                                         * yy_get_next_buffer() to have set up
+                                         * yytext, we can now set up
+                                         * yy_c_buf_p so that if some total
+                                         * hoser (like flex itself) wants to
+                                         * call the scanner after we return the
+                                         * YY_NULL, it'll still work - another
+                                         * YY_NULL will get returned.
+                                         */
+                                        yyg->yy_c_buf_p = yyg->yytext_ptr + YY_MORE_ADJ;
+
+                                        yy_act = YY_STATE_EOF(YY_START);
+                                        goto do_action;
+                                        }
+
+                                else
+                                        {
+                                        if ( ! yyg->yy_did_buffer_switch_on_eof )
+                                                YY_NEW_FILE;
+                                        }
+                                break;
+                                }
+
+                        case EOB_ACT_CONTINUE_SCAN:
+                                yyg->yy_c_buf_p =
+                                        yyg->yytext_ptr + yy_amount_of_matched_text;
+
+                                yy_current_state = yy_get_previous_state( yyscanner );
+
+                                yy_cp = yyg->yy_c_buf_p;
+                                yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+                                goto yy_match;
+
+                        case EOB_ACT_LAST_MATCH:
+                                yyg->yy_c_buf_p =
+                                &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars];
+
+                                yy_current_state = yy_get_previous_state( yyscanner );
+
+                                yy_cp = yyg->yy_c_buf_p;
+                                yy_bp = yyg->yytext_ptr + YY_MORE_ADJ;
+                                goto yy_find_action;
+                        }
+                break;
+                }
+
+        default:
+                YY_FATAL_ERROR(
+                        "fatal flex scanner internal error--no action found" );
+        } /* end of action switch */
+                } /* end of scanning one token */
+} /* end of yylex */
+
+/* yy_get_next_buffer - try to read in a new buffer
+ *
+ * Returns a code representing an action:
+ *      EOB_ACT_LAST_MATCH -
+ *      EOB_ACT_CONTINUE_SCAN - continue scanning from current position
+ *      EOB_ACT_END_OF_FILE - end of file
+ */
+static int yy_get_next_buffer (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+        register char *source = yyg->yytext_ptr;
+        register int number_to_move, i;
+        int ret_val;
+
+        if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] )
+                YY_FATAL_ERROR(
+                "fatal flex scanner internal error--end of buffer missed" );
+
+        if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
+                { /* Don't try to fill the buffer, so this is an EOF. */
+                if ( yyg->yy_c_buf_p - yyg->yytext_ptr - YY_MORE_ADJ == 1 )
+                        {
+                        /* We matched a single character, the EOB, so
+                         * treat this as a final EOF.
+                         */
+                        return EOB_ACT_END_OF_FILE;
+                        }
+
+                else
+                        {
+                        /* We matched some text prior to the EOB, first
+                         * process it.
+                         */
+                        return EOB_ACT_LAST_MATCH;
+                        }
+                }
+
+        /* Try to read more data. */
+
+        /* First move last chars to start of buffer. */
+        number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr) - 1;
+
+        for ( i = 0; i < number_to_move; ++i )
+                *(dest++) = *(source++);
+
+        if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
+                /* don't do the read, it's not guaranteed to return an EOF,
+                 * just force an EOF
+                 */
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars = 0;
+
+        else
+                {
+                        size_t num_to_read =
+                        YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
+
+                while ( num_to_read <= 0 )
+                        { /* Not enough room in the buffer - grow it. */
+
+                        /* just a shorter name for the current buffer */
+                        YY_BUFFER_STATE b = YY_CURRENT_BUFFER;
+
+                        int yy_c_buf_p_offset =
+                                (int) (yyg->yy_c_buf_p - b->yy_ch_buf);
+
+                        if ( b->yy_is_our_buffer )
+                                {
+                                int new_size = b->yy_buf_size * 2;
+
+                                if ( new_size <= 0 )
+                                        b->yy_buf_size += b->yy_buf_size / 8;
+                                else
+                                        b->yy_buf_size *= 2;
+
+                                b->yy_ch_buf = (char *)
+                                        /* Include room in for 2 EOB chars. */
+                                        yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ,yyscanner );
+                                }
+                        else
+                                /* Can't grow it, we don't own it. */
+                                b->yy_ch_buf = 0;
+
+                        if ( ! b->yy_ch_buf )
+                                YY_FATAL_ERROR(
+                                "fatal error - scanner input buffer overflow" );
+
+                        yyg->yy_c_buf_p = &b->yy_ch_buf[yy_c_buf_p_offset];
+
+                        num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
+                                                number_to_move - 1;
+
+                        }
+
+                if ( num_to_read > YY_READ_BUF_SIZE )
+                        num_to_read = YY_READ_BUF_SIZE;
+
+                /* Read in more data. */
+                YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
+                        yyg->yy_n_chars, num_to_read );
+
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+                }
+
+        if ( yyg->yy_n_chars == 0 )
+                {
+                if ( number_to_move == YY_MORE_ADJ )
+                        {
+                        ret_val = EOB_ACT_END_OF_FILE;
+                        yyrestart(yyin  ,yyscanner);
+                        }
+
+                else
+                        {
+                        ret_val = EOB_ACT_LAST_MATCH;
+                        YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
+                                YY_BUFFER_EOF_PENDING;
+                        }
+                }
+
+        else
+                ret_val = EOB_ACT_CONTINUE_SCAN;
+
+        yyg->yy_n_chars += number_to_move;
+        YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] = YY_END_OF_BUFFER_CHAR;
+        YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;
+
+        yyg->yytext_ptr = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
+
+        return ret_val;
+}
+
+/* yy_get_previous_state - get the state just before the EOB char was reached */
+
+    static yy_state_type yy_get_previous_state (yyscan_t yyscanner)
+{
+        register yy_state_type yy_current_state;
+        register char *yy_cp;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        yy_current_state = yyg->yy_start;
+
+        for ( yy_cp = yyg->yytext_ptr + YY_MORE_ADJ; yy_cp < yyg->yy_c_buf_p; ++yy_cp )
+                {
+                register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+                if ( yy_accept[yy_current_state] )
+                        {
+                        yyg->yy_last_accepting_state = yy_current_state;
+                        yyg->yy_last_accepting_cpos = yy_cp;
+                        }
+                while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+                        {
+                        yy_current_state = (int) yy_def[yy_current_state];
+                        if ( yy_current_state >= 28 )
+                                yy_c = yy_meta[(unsigned int) yy_c];
+                        }
+                yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+                }
+
+        return yy_current_state;
+}
+
+/* yy_try_NUL_trans - try to make a transition on the NUL character
+ *
+ * synopsis
+ *      next_state = yy_try_NUL_trans( current_state );
+ */
+    static yy_state_type yy_try_NUL_trans  (yy_state_type yy_current_state , yyscan_t yyscanner)
+{
+        register int yy_is_jam;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        register char *yy_cp = yyg->yy_c_buf_p;
+
+        register YY_CHAR yy_c = 1;
+        if ( yy_accept[yy_current_state] )
+                {
+                yyg->yy_last_accepting_state = yy_current_state;
+                yyg->yy_last_accepting_cpos = yy_cp;
+                }
+        while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
+                {
+                yy_current_state = (int) yy_def[yy_current_state];
+                if ( yy_current_state >= 28 )
+                        yy_c = yy_meta[(unsigned int) yy_c];
+                }
+        yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+        yy_is_jam = (yy_current_state == 27);
+
+        return yy_is_jam ? 0 : yy_current_state;
+}
+
+#ifndef YY_NO_INPUT
+#ifdef __cplusplus
+    static int yyinput (yyscan_t yyscanner)
+#else
+    static int input  (yyscan_t yyscanner)
+#endif
+
+{
+        int c;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        *yyg->yy_c_buf_p = yyg->yy_hold_char;
+
+        if ( *yyg->yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
+                {
+                /* yy_c_buf_p now points to the character we want to return.
+                 * If this occurs *before* the EOB characters, then it's a
+                 * valid NUL; if not, then we've hit the end of the buffer.
+                 */
+                if ( yyg->yy_c_buf_p < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars] )
+                        /* This was really a NUL. */
+                        *yyg->yy_c_buf_p = '\0';
+
+                else
+                        { /* need more input */
+                        int offset = yyg->yy_c_buf_p - yyg->yytext_ptr;
+                        ++yyg->yy_c_buf_p;
+
+                        switch ( yy_get_next_buffer( yyscanner ) )
+                                {
+                                case EOB_ACT_LAST_MATCH:
+                                        /* This happens because yy_g_n_b()
+                                         * sees that we've accumulated a
+                                         * token and flags that we need to
+                                         * try matching the token before
+                                         * proceeding.  But for input(),
+                                         * there's no matching to consider.
+                                         * So convert the EOB_ACT_LAST_MATCH
+                                         * to EOB_ACT_END_OF_FILE.
+                                         */
+
+                                        /* Reset buffer status. */
+                                        yyrestart(yyin ,yyscanner);
+
+                                        /*FALLTHROUGH*/
+
+                                case EOB_ACT_END_OF_FILE:
+                                        {
+                                        if ( yywrap(yyscanner ) )
+                                                return EOF;
+
+                                        if ( ! yyg->yy_did_buffer_switch_on_eof )
+                                                YY_NEW_FILE;
+#ifdef __cplusplus
+                                        return yyinput(yyscanner);
+#else
+                                        return input(yyscanner);
+#endif
+                                        }
+
+                                case EOB_ACT_CONTINUE_SCAN:
+                                        yyg->yy_c_buf_p = yyg->yytext_ptr + offset;
+                                        break;
+                                }
+                        }
+                }
+
+        c = *(unsigned char *) yyg->yy_c_buf_p; /* cast for 8-bit char's */
+        *yyg->yy_c_buf_p = '\0';        /* preserve yytext */
+        yyg->yy_hold_char = *++yyg->yy_c_buf_p;
+
+        if ( c == '\n' )
+                   
+    do{ yylineno++;
+        yycolumn=0;
+    }while(0)
+;
+
+        return c;
+}
+#endif  /* ifndef YY_NO_INPUT */
+
+/** Immediately switch to a different input stream.
+ * @param input_file A readable stream.
+ * @param yyscanner The scanner object.
+ * @note This function does not reset the start condition to @c INITIAL .
+ */
+    void yyrestart  (FILE * input_file , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        if ( ! YY_CURRENT_BUFFER ){
+        yyensure_buffer_stack (yyscanner);
+                YY_CURRENT_BUFFER_LVALUE =
+            yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+        }
+
+        yy_init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner);
+        yy_load_buffer_state(yyscanner );
+}
+
+/** Switch to a different input buffer.
+ * @param new_buffer The new input buffer.
+ * @param yyscanner The scanner object.
+ */
+    void yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        /* TODO. We should be able to replace this entire function body
+         * with
+         *              yypop_buffer_state();
+         *              yypush_buffer_state(new_buffer);
+     */
+        yyensure_buffer_stack (yyscanner);
+        if ( YY_CURRENT_BUFFER == new_buffer )
+                return;
+
+        if ( YY_CURRENT_BUFFER )
+                {
+                /* Flush out information for old buffer. */
+                *yyg->yy_c_buf_p = yyg->yy_hold_char;
+                YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p;
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+                }
+
+        YY_CURRENT_BUFFER_LVALUE = new_buffer;
+        yy_load_buffer_state(yyscanner );
+
+        /* We don't actually know whether we did this switch during
+         * EOF (yywrap()) processing, but the only time this flag
+         * is looked at is after yywrap() is called, so it's safe
+         * to go ahead and always set it.
+         */
+        yyg->yy_did_buffer_switch_on_eof = 1;
+}
+
+static void yy_load_buffer_state  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
+        yyg->yytext_ptr = yyg->yy_c_buf_p = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
+        yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
+        yyg->yy_hold_char = *yyg->yy_c_buf_p;
+}
+
+/** Allocate and initialize an input buffer state.
+ * @param file A readable stream.
+ * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
+ * @param yyscanner The scanner object.
+ * @return the allocated buffer state.
+ */
+    YY_BUFFER_STATE yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
+{
+        YY_BUFFER_STATE b;
+    
+        b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+        if ( ! b )
+                YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+        b->yy_buf_size = size;
+
+        /* yy_ch_buf has to be 2 characters longer than the size given because
+         * we need to put in 2 end-of-buffer characters.
+         */
+        b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 ,yyscanner );
+        if ( ! b->yy_ch_buf )
+                YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
+
+        b->yy_is_our_buffer = 1;
+
+        yy_init_buffer(b,file ,yyscanner);
+
+        return b;
+}
+
+/** Destroy the buffer.
+ * @param b a buffer created with yy_create_buffer()
+ * @param yyscanner The scanner object.
+ */
+    void yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        if ( ! b )
+                return;
+
+        if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
+                YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
+
+        if ( b->yy_is_our_buffer )
+                yyfree((void *) b->yy_ch_buf ,yyscanner );
+
+        yyfree((void *) b ,yyscanner );
+}
+
+#ifndef __cplusplus
+extern int isatty (int );
+#endif /* __cplusplus */
+    
+/* Initializes or reinitializes a buffer.
+ * This function is sometimes called more than once on the same buffer,
+ * such as during a yyrestart() or at EOF.
+ */
+    static void yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
+
+{
+        int oerrno = errno;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        yy_flush_buffer(b ,yyscanner);
+
+        b->yy_input_file = file;
+        b->yy_fill_buffer = 1;
+
+    /* If b is the current buffer, then yy_init_buffer was _probably_
+     * called from yyrestart() or through yy_get_next_buffer.
+     * In that case, we don't want to reset the lineno or column.
+     */
+    if (b != YY_CURRENT_BUFFER){
+        b->yy_bs_lineno = 1;
+        b->yy_bs_column = 0;
+    }
+
+        b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
+    
+        errno = oerrno;
+}
+
+/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
+ * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
+ * @param yyscanner The scanner object.
+ */
+    void yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        if ( ! b )
+                return;
+
+        b->yy_n_chars = 0;
+
+        /* We always need two end-of-buffer characters.  The first causes
+         * a transition to the end-of-buffer state.  The second causes
+         * a jam in that state.
+         */
+        b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
+        b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
+
+        b->yy_buf_pos = &b->yy_ch_buf[0];
+
+        b->yy_at_bol = 1;
+        b->yy_buffer_status = YY_BUFFER_NEW;
+
+        if ( b == YY_CURRENT_BUFFER )
+                yy_load_buffer_state(yyscanner );
+}
+
+/** Pushes the new state onto the stack. The new state becomes
+ *  the current state. This function will allocate the stack
+ *  if necessary.
+ *  @param new_buffer The new state.
+ *  @param yyscanner The scanner object.
+ */
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        if (new_buffer == NULL)
+                return;
+
+        yyensure_buffer_stack(yyscanner);
+
+        /* This block is copied from yy_switch_to_buffer. */
+        if ( YY_CURRENT_BUFFER )
+                {
+                /* Flush out information for old buffer. */
+                *yyg->yy_c_buf_p = yyg->yy_hold_char;
+                YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = yyg->yy_c_buf_p;
+                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars;
+                }
+
+        /* Only push if top exists. Otherwise, replace top. */
+        if (YY_CURRENT_BUFFER)
+                yyg->yy_buffer_stack_top++;
+        YY_CURRENT_BUFFER_LVALUE = new_buffer;
+
+        /* copied from yy_switch_to_buffer. */
+        yy_load_buffer_state(yyscanner );
+        yyg->yy_did_buffer_switch_on_eof = 1;
+}
+
+/** Removes and deletes the top of the stack, if present.
+ *  The next element becomes the new top.
+ *  @param yyscanner The scanner object.
+ */
+void yypop_buffer_state (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        if (!YY_CURRENT_BUFFER)
+                return;
+
+        yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner);
+        YY_CURRENT_BUFFER_LVALUE = NULL;
+        if (yyg->yy_buffer_stack_top > 0)
+                --yyg->yy_buffer_stack_top;
+
+        if (YY_CURRENT_BUFFER) {
+                yy_load_buffer_state(yyscanner );
+                yyg->yy_did_buffer_switch_on_eof = 1;
+        }
+}
+
+/* Allocates the stack if it does not exist.
+ *  Guarantees space for at least one push.
+ */
+static void yyensure_buffer_stack (yyscan_t yyscanner)
+{
+        int num_to_alloc;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        if (!yyg->yy_buffer_stack) {
+
+                /* First allocation is just for 2 elements, since we don't know if this
+                 * scanner will even need a stack. We use 2 instead of 1 to avoid an
+                 * immediate realloc on the next call.
+         */
+                num_to_alloc = 1;
+                yyg->yy_buffer_stack = (struct yy_buffer_state**)yyalloc
+                                                                (num_to_alloc * sizeof(struct yy_buffer_state*)
+                                                                , yyscanner);
+                
+                memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*));
+                                
+                yyg->yy_buffer_stack_max = num_to_alloc;
+                yyg->yy_buffer_stack_top = 0;
+                return;
+        }
+
+        if (yyg->yy_buffer_stack_top >= (yyg->yy_buffer_stack_max) - 1){
+
+                /* Increase the buffer to prepare for a possible push. */
+                int grow_size = 8 /* arbitrary grow size */;
+
+                num_to_alloc = yyg->yy_buffer_stack_max + grow_size;
+                yyg->yy_buffer_stack = (struct yy_buffer_state**)yyrealloc
+                                                                (yyg->yy_buffer_stack,
+                                                                num_to_alloc * sizeof(struct yy_buffer_state*)
+                                                                , yyscanner);
+
+                /* zero only the new slots.*/
+                memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*));
+                yyg->yy_buffer_stack_max = num_to_alloc;
+        }
+}
+
+/** Setup the input buffer state to scan directly from a user-specified character buffer.
+ * @param base the character buffer
+ * @param size the size in bytes of the character buffer
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object. 
+ */
+YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
+{
+        YY_BUFFER_STATE b;
+    
+        if ( size < 2 ||
+             base[size-2] != YY_END_OF_BUFFER_CHAR ||
+             base[size-1] != YY_END_OF_BUFFER_CHAR )
+                /* They forgot to leave room for the EOB's. */
+                return 0;
+
+        b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+        if ( ! b )
+                YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
+
+        b->yy_buf_size = size - 2;      /* "- 2" to take care of EOB's */
+        b->yy_buf_pos = b->yy_ch_buf = base;
+        b->yy_is_our_buffer = 0;
+        b->yy_input_file = 0;
+        b->yy_n_chars = b->yy_buf_size;
+        b->yy_is_interactive = 0;
+        b->yy_at_bol = 1;
+        b->yy_fill_buffer = 0;
+        b->yy_buffer_status = YY_BUFFER_NEW;
+
+        yy_switch_to_buffer(b ,yyscanner );
+
+        return b;
+}
+
+/** Setup the input buffer state to scan a string. The next call to yylex() will
+ * scan from a @e copy of @a str.
+ * @param str a NUL-terminated string to scan
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object.
+ * @note If you want to scan bytes that may contain NUL values, then use
+ *       yy_scan_bytes() instead.
+ */
+YY_BUFFER_STATE yy_scan_string (yyconst char * yy_str , yyscan_t yyscanner)
+{
+    
+        return yy_scan_bytes(yy_str,strlen(yy_str) ,yyscanner);
+}
+
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
+ * scan from a @e copy of @a bytes.
+ * @param bytes the byte buffer to scan
+ * @param len the number of bytes in the buffer pointed to by @a bytes.
+ * @param yyscanner The scanner object.
+ * @return the newly allocated buffer state object.
+ */
+YY_BUFFER_STATE yy_scan_bytes  (yyconst char * bytes, int  len , yyscan_t yyscanner)
+{
+        YY_BUFFER_STATE b;
+        char *buf;
+        yy_size_t n;
+        int i;
+    
+        /* Get memory for full buffer, including space for trailing EOB's. */
+        n = len + 2;
+        buf = (char *) yyalloc(n ,yyscanner );
+        if ( ! buf )
+                YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
+
+        for ( i = 0; i < len; ++i )
+                buf[i] = bytes[i];
+
+        buf[len] = buf[len+1] = YY_END_OF_BUFFER_CHAR;
+
+        b = yy_scan_buffer(buf,n ,yyscanner);
+        if ( ! b )
+                YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
+
+        /* It's okay to grow etc. this buffer, and we should throw it
+         * away when we're done.
+         */
+        b->yy_is_our_buffer = 1;
+
+        return b;
+}
+
+#ifndef YY_EXIT_FAILURE
+#define YY_EXIT_FAILURE 2
+#endif
+
+static void yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
+{
+        (void)yyscanner;
+        (void) fprintf( stderr, "%s\n", msg );
+        exit( YY_EXIT_FAILURE );
+}
+
+/* Redefine yyless() so it works in section 3 code. */
+
+#undef yyless
+#define yyless(n) \
+        do \
+                { \
+                /* Undo effects of setting up yytext. */ \
+        int yyless_macro_arg = (n); \
+        YY_LESS_LINENO(yyless_macro_arg);\
+                yytext[yyleng] = yyg->yy_hold_char; \
+                yyg->yy_c_buf_p = yytext + yyless_macro_arg; \
+                yyg->yy_hold_char = *yyg->yy_c_buf_p; \
+                *yyg->yy_c_buf_p = '\0'; \
+                yyleng = yyless_macro_arg; \
+                } \
+        while ( 0 )
+
+/* Accessor  methods (get/set functions) to struct members. */
+
+/** Get the user-defined data for this scanner.
+ * @param yyscanner The scanner object.
+ */
+YY_EXTRA_TYPE yyget_extra  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyextra;
+}
+
+/** Get the current line number.
+ * @param yyscanner The scanner object.
+ */
+int yyget_lineno  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    
+        if (! YY_CURRENT_BUFFER)
+            return 0;
+    
+    return yylineno;
+}
+
+/** Get the current column number.
+ * @param yyscanner The scanner object.
+ */
+int yyget_column  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    
+        if (! YY_CURRENT_BUFFER)
+            return 0;
+    
+    return yycolumn;
+}
+
+/** Get the input stream.
+ * @param yyscanner The scanner object.
+ */
+FILE *yyget_in  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyin;
+}
+
+/** Get the output stream.
+ * @param yyscanner The scanner object.
+ */
+FILE *yyget_out  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyout;
+}
+
+/** Get the length of the current token.
+ * @param yyscanner The scanner object.
+ */
+int yyget_leng  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yyleng;
+}
+
+/** Get the current token.
+ * @param yyscanner The scanner object.
+ */
+
+char *yyget_text  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yytext;
+}
+
+/** Set the user-defined data. This data is never touched by the scanner.
+ * @param user_defined The data to be associated with this scanner.
+ * @param yyscanner The scanner object.
+ */
+void yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyextra = user_defined ;
+}
+
+/** Set the current line number.
+ * @param line_number
+ * @param yyscanner The scanner object.
+ */
+void yyset_lineno (int  line_number , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        /* lineno is only valid if an input buffer exists. */
+        if (! YY_CURRENT_BUFFER )
+           yy_fatal_error( "yyset_lineno called with no buffer" , yyscanner); 
+    
+    yylineno = line_number;
+}
+
+/** Set the current column.
+ * @param line_number
+ * @param yyscanner The scanner object.
+ */
+void yyset_column (int  column_no , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+        /* column is only valid if an input buffer exists. */
+        if (! YY_CURRENT_BUFFER )
+           yy_fatal_error( "yyset_column called with no buffer" , yyscanner); 
+    
+    yycolumn = column_no;
+}
+
+/** Set the input stream. This does not discard the current
+ * input buffer.
+ * @param in_str A readable stream.
+ * @param yyscanner The scanner object.
+ * @see yy_switch_to_buffer
+ */
+void yyset_in (FILE *  in_str , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyin = in_str ;
+}
+
+void yyset_out (FILE *  out_str , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yyout = out_str ;
+}
+
+int yyget_debug  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    return yy_flex_debug;
+}
+
+void yyset_debug (int  bdebug , yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    yy_flex_debug = bdebug ;
+}
+
+/* Accessor methods for yylval and yylloc */
+
+static int yy_init_globals (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+    /* Initialization is the same as for the non-reentrant scanner.
+       This function is called once per scanner lifetime. */
+
+    yyg->yy_buffer_stack = 0;
+    yyg->yy_buffer_stack_top = 0;
+    yyg->yy_buffer_stack_max = 0;
+    yyg->yy_c_buf_p = (char *) 0;
+    yyg->yy_init = 1;
+    yyg->yy_start = 0;
+    yyg->yy_start_stack_ptr = 0;
+    yyg->yy_start_stack_depth = 0;
+    yyg->yy_start_stack = (int *) 0;
+
+/* Defined in main.c */
+#ifdef YY_STDINIT
+    yyin = stdin;
+    yyout = stdout;
+#else
+    yyin = (FILE *) 0;
+    yyout = (FILE *) 0;
+#endif
+
+    /* For future reference: Set errno on error, since we are called by
+     * yylex_init()
+     */
+    return 0;
+}
+
+/* User-visible API */
+
+/* yylex_init is special because it creates the scanner itself, so it is
+ * the ONLY reentrant function that doesn't take the scanner as the last argument.
+ * That's why we explicitly handle the declaration, instead of using our macros.
+ */
+
+int yylex_init(yyscan_t* ptr_yy_globals)
+
+{
+    if (ptr_yy_globals == NULL){
+        errno = EINVAL;
+        return 1;
+    }
+
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL );
+
+    if (*ptr_yy_globals == NULL){
+        errno = ENOMEM;
+        return 1;
+    }
+
+    memset(*ptr_yy_globals,0,sizeof(struct yyguts_t));
+
+    return yy_init_globals ( *ptr_yy_globals );
+}
+
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy  (yyscan_t yyscanner)
+{
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+
+    /* Pop the buffer stack, destroying each element. */
+        while(YY_CURRENT_BUFFER){
+                yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner );
+                YY_CURRENT_BUFFER_LVALUE = NULL;
+                yypop_buffer_state(yyscanner);
+        }
+
+        /* Destroy the stack itself. */
+        yyfree(yyg->yy_buffer_stack ,yyscanner);
+        yyg->yy_buffer_stack = NULL;
+
+    /* Destroy the start condition stack. */
+        yyfree(yyg->yy_start_stack ,yyscanner );
+        yyg->yy_start_stack = NULL;
+
+    /* Destroy the main struct (reentrant only). */
+    yyfree ( yyscanner , yyscanner );
+    return 0;
+}
+
+/*
+ * Internal utility routines.
+ */
+
+#ifndef yytext_ptr
+static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yyscanner)
+{
+        register int i;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        for ( i = 0; i < n; ++i )
+                s1[i] = s2[i];
+}
+#endif
+
+#ifdef YY_NEED_STRLEN
+static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
+{
+        register int n;
+    struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+        for ( n = 0; s[n]; ++n )
+                ;
+
+        return n;
+}
+#endif
+
+void *yyalloc (yy_size_t  size , yyscan_t yyscanner)
+{
+        (void)yyscanner;
+        return (void *) malloc( size );
+}
+
+void *yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
+{
+        (void)yyscanner;
+        /* The cast to (char *) in the following accommodates both
+         * implementations that use char* generic pointers, and those
+         * that use void* generic pointers.  It works with the latter
+         * because both ANSI C and C++ allow castless assignment from
+         * any pointer type to void*, and deal with argument conversions
+         * as though doing an assignment.
+         */
+        return (void *) realloc( (char *) ptr, size );
+}
+
+void yyfree (void * ptr , yyscan_t yyscanner)
+{
+        (void)yyscanner;
+        free( (char *) ptr );   /* see yyrealloc() for (char *) cast */
+}
+
+#define YYTABLES_NAME "yytables"
+
+#undef YY_NEW_FILE
+#undef YY_FLUSH_BUFFER
+#undef yy_set_bol
+#undef yy_new_buffer
+#undef yy_set_interactive
+#undef yytext_ptr
+#undef YY_DO_BEFORE_ACTION
+
+#ifdef YY_DECL_IS_OURS
+#undef YY_DECL_IS_OURS
+#undef YY_DECL
+#endif
+#line 156 "cmListFileLexer.l"
+
+
+
+/*--------------------------------------------------------------------------*/
+void cmListFileLexerSetToken(cmListFileLexer* lexer, const char* text,
+                             int length)
+{
+  /* Set the token line and column number.  */
+  lexer->token.line = lexer->line;
+  lexer->token.column = lexer->column;
+
+  /* Use the same buffer if possible.  */
+  if(lexer->token.text)
+    {
+    if(text && length < lexer->size)
+      {
+      strcpy(lexer->token.text, text);
+      lexer->token.length = length;
+      return;
+      }
+    free(lexer->token.text);
+    lexer->token.text = 0;
+    lexer->size = 0;
+    }
+
+  /* Need to extend the buffer.  */
+  if(text)
+    {
+    lexer->token.text = strdup(text);
+    lexer->token.length = length;
+    lexer->size = length+1;
+    }
+  else
+    {
+    lexer->token.length = 0;
+    }
+}
+
+/*--------------------------------------------------------------------------*/
+void cmListFileLexerAppend(cmListFileLexer* lexer, const char* text,
+                           int length)
+{
+  char* temp;
+  int newSize;
+
+  /* If the appended text will fit in the buffer, do not reallocate.  */
+  newSize = lexer->token.length + length + 1;
+  if(lexer->token.text && newSize <= lexer->size)
+    {
+    strcpy(lexer->token.text+lexer->token.length, text);
+    lexer->token.length += length;
+    return;
+    }
+
+  /* We need to extend the buffer.  */
+  temp = malloc(newSize);
+  if(lexer->token.text)
+    {
+    memcpy(temp, lexer->token.text, lexer->token.length);
+    free(lexer->token.text);
+    }
+  memcpy(temp+lexer->token.length, text, length);
+  temp[lexer->token.length+length] = 0;
+  lexer->token.text = temp;
+  lexer->token.length += length;
+  lexer->size = newSize;
+}
+
+/*--------------------------------------------------------------------------*/
+cmListFileLexer* cmListFileLexer_New()
+{
+  cmListFileLexer* lexer = (cmListFileLexer*)malloc(sizeof(cmListFileLexer));
+  if(!lexer)
+    {
+    return 0;
+    }
+  memset(lexer, 0, sizeof(*lexer));
+  lexer->line = 1;
+  lexer->column = 1;
+  return lexer;
+}
+
+/*--------------------------------------------------------------------------*/
+void cmListFileLexer_Delete(cmListFileLexer* lexer)
+{
+  cmListFileLexer_SetFileName(lexer, 0);
+  free(lexer);
+}
+
+/*--------------------------------------------------------------------------*/
+int cmListFileLexer_SetFileName(cmListFileLexer* lexer, const char* name)
+{
+  int result = 1;
+  if(lexer->file)
+    {
+    yylex_destroy(lexer->scanner);
+    fclose(lexer->file);
+    lexer->file = 0;
+    }
+  if(name)
+    {
+    lexer->file = fopen(name, "r");
+    if(!lexer->file)
+      {
+      result = 0;
+      }
+    }
+  if(lexer->file)
+    {
+    yylex_init(&lexer->scanner);
+    yyset_in(lexer->file,lexer->scanner);
+    }
+  return result;
+}
+
+/*--------------------------------------------------------------------------*/
+cmListFileLexer_Token* cmListFileLexer_Scan(cmListFileLexer* lexer)
+{
+  if(!lexer->file)
+    {
+    return 0;
+    }
+  if(yylex(lexer->scanner,lexer))
+    {
+    return &lexer->token;
+    }
+  else
+    {
+    cmListFileLexer_SetFileName(lexer, 0);
+    return 0;
+    }
+}
+
+/*--------------------------------------------------------------------------*/
+long cmListFileLexer_GetCurrentLine(cmListFileLexer* lexer)
+{
+  if(lexer->file)
+    {
+    return lexer->line;
+    }
+  else
+    {
+    return 0;
+    }
+}
+
+/*--------------------------------------------------------------------------*/
+long cmListFileLexer_GetCurrentColumn(cmListFileLexer* lexer)
+{
+  if(lexer->file)
+    {
+    return lexer->column;
+    }
+  else
+    {
+    return 0;
+    }
+}
+
diff --git a/Source/cmListFileLexer.h b/Source/cmListFileLexer.h
new file mode 100644
index 0000000..dea8b7d
--- /dev/null
+++ b/Source/cmListFileLexer.h
@@ -0,0 +1,60 @@
+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef cmListFileLexer_h
+#define cmListFileLexer_h
+
+typedef enum cmListFileLexer_Type_e
+{
+  cmListFileLexer_Token_None,
+  cmListFileLexer_Token_Newline,
+  cmListFileLexer_Token_Identifier,
+  cmListFileLexer_Token_ParenLeft,
+  cmListFileLexer_Token_ParenRight,
+  cmListFileLexer_Token_ArgumentUnquoted,
+  cmListFileLexer_Token_ArgumentQuoted,
+  cmListFileLexer_Token_Error
+} cmListFileLexer_Type;
+
+typedef struct cmListFileLexer_Token_s cmListFileLexer_Token;
+struct cmListFileLexer_Token_s
+{
+  cmListFileLexer_Type type;
+  char* text;
+  int length;
+  int line;
+  int column;
+};
+
+typedef struct cmListFileLexer_s cmListFileLexer;
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+cmListFileLexer* cmListFileLexer_New();
+int cmListFileLexer_SetFileName(cmListFileLexer*, const char*);
+cmListFileLexer_Token* cmListFileLexer_Scan(cmListFileLexer*);
+long cmListFileLexer_GetCurrentLine(cmListFileLexer*);
+long cmListFileLexer_GetCurrentColumn(cmListFileLexer*);
+void cmListFileLexer_Delete(cmListFileLexer*);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
diff --git a/Source/cmListFileLexer.l b/Source/cmListFileLexer.l
new file mode 100644
index 0000000..9f272e0
--- /dev/null
+++ b/Source/cmListFileLexer.l
@@ -0,0 +1,326 @@
+%{
+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+/*
+
+This file must be translated to C and modified to build everywhere.
+
+Run flex like this:
+
+  flex -ocmListFileLexer.c cmListFileLexer.l
+
+Modify cmListFileLexer.c:
+  - remove TABs
+  - remove the yyunput function
+  - add a statement "(void)yyscanner;" to the top of these methods:
+      yy_fatal_error, yyalloc, yyrealloc, yyfree
+
+*/
+
+/* Disable features we do not need. */
+#define YY_NEVER_INTERACTIVE 1
+#define YY_NO_UNPUT 1
+#define ECHO
+
+/* Setup the proper yylex declaration.  */
+#define YY_DECL int yylex (yyscan_t yyscanner, cmListFileLexer* lexer)
+
+/* Disable some warnings.  */
+#if defined(_MSC_VER)
+# pragma warning ( disable : 4127 )
+# pragma warning ( disable : 4131 )
+# pragma warning ( disable : 4244 )
+# pragma warning ( disable : 4251 )
+# pragma warning ( disable : 4267 )
+# pragma warning ( disable : 4305 )
+# pragma warning ( disable : 4309 )
+# pragma warning ( disable : 4706 )
+# pragma warning ( disable : 4786 )
+#endif
+
+#include "cmListFileLexer.h"
+
+/*--------------------------------------------------------------------------*/
+struct cmListFileLexer_s
+{
+  cmListFileLexer_Token token;
+  int line;
+  int column;
+  int size;
+  FILE* file;
+  yyscan_t scanner;
+};
+
+static void cmListFileLexerSetToken(cmListFileLexer* lexer, const char* text,
+                                    int length);
+static void cmListFileLexerAppend(cmListFileLexer* lexer, const char* text,
+                                  int length);
+
+/*--------------------------------------------------------------------------*/
+%}
+
+%option reentrant
+%option yylineno
+%option noyywrap
+%pointer
+%x STRING
+
+%%
+
+\n {
+  lexer->token.type = cmListFileLexer_Token_Newline;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  ++lexer->line;
+  lexer->column = 1;
+  return 1;
+}
+
+#.* {
+  lexer->column += yyleng;
+}
+
+\( {
+  lexer->token.type = cmListFileLexer_Token_ParenLeft;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+
+\) {
+  lexer->token.type = cmListFileLexer_Token_ParenRight;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+
+[A-Za-z_][A-Za-z0-9_]+ {
+  lexer->token.type = cmListFileLexer_Token_Identifier;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+
+([^ \t\r\n\(\)\"\\]|\\.)+ {
+  lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+
+\" {
+  lexer->token.type = cmListFileLexer_Token_ArgumentQuoted;
+  cmListFileLexerSetToken(lexer, "", 0);
+  lexer->column += yyleng;
+  BEGIN(STRING);
+}
+
+<STRING>([^\\\n\"]|\\(.|\n))+ {
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+}
+
+<STRING>\n {
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  ++lexer->line;
+  lexer->column = 1;
+}
+
+<STRING>\" {
+  lexer->column += yyleng;
+  BEGIN(INITIAL);
+  return 1;
+}
+
+<STRING>. {
+  cmListFileLexerAppend(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+}
+
+[ \t\r] {
+  lexer->column += yyleng;
+}
+
+. {
+  lexer->token.type = cmListFileLexer_Token_Error;
+  cmListFileLexerSetToken(lexer, yytext, yyleng);
+  lexer->column += yyleng;
+  return 1;
+}
+
+<<EOF>> {
+  lexer->token.type = cmListFileLexer_Token_None;
+  cmListFileLexerSetToken(lexer, 0, 0);
+  return 0;
+}
+
+%%
+
+/*--------------------------------------------------------------------------*/
+void cmListFileLexerSetToken(cmListFileLexer* lexer, const char* text,
+                             int length)
+{
+  /* Set the token line and column number.  */
+  lexer->token.line = lexer->line;
+  lexer->token.column = lexer->column;
+
+  /* Use the same buffer if possible.  */
+  if(lexer->token.text)
+    {
+    if(text && length < lexer->size)
+      {
+      strcpy(lexer->token.text, text);
+      lexer->token.length = length;
+      return;
+      }
+    free(lexer->token.text);
+    lexer->token.text = 0;
+    lexer->size = 0;
+    }
+
+  /* Need to extend the buffer.  */
+  if(text)
+    {
+    lexer->token.text = strdup(text);
+    lexer->token.length = length;
+    lexer->size = length+1;
+    }
+  else
+    {
+    lexer->token.length = 0;
+    }
+}
+
+/*--------------------------------------------------------------------------*/
+void cmListFileLexerAppend(cmListFileLexer* lexer, const char* text,
+                           int length)
+{
+  char* temp;
+  int newSize;
+
+  /* If the appended text will fit in the buffer, do not reallocate.  */
+  newSize = lexer->token.length + length + 1;
+  if(lexer->token.text && newSize <= lexer->size)
+    {
+    strcpy(lexer->token.text+lexer->token.length, text);
+    lexer->token.length += length;
+    return;
+    }
+
+  /* We need to extend the buffer.  */
+  temp = malloc(newSize);
+  if(lexer->token.text)
+    {
+    memcpy(temp, lexer->token.text, lexer->token.length);
+    free(lexer->token.text);
+    }
+  memcpy(temp+lexer->token.length, text, length);
+  temp[lexer->token.length+length] = 0;
+  lexer->token.text = temp;
+  lexer->token.length += length;
+  lexer->size = newSize;
+}
+
+/*--------------------------------------------------------------------------*/
+cmListFileLexer* cmListFileLexer_New()
+{
+  cmListFileLexer* lexer = (cmListFileLexer*)malloc(sizeof(cmListFileLexer));
+  if(!lexer)
+    {
+    return 0;
+    }
+  memset(lexer, 0, sizeof(*lexer));
+  lexer->line = 1;
+  lexer->column = 1;
+  return lexer;
+}
+
+/*--------------------------------------------------------------------------*/
+void cmListFileLexer_Delete(cmListFileLexer* lexer)
+{
+  cmListFileLexer_SetFileName(lexer, 0);
+  free(lexer);
+}
+
+/*--------------------------------------------------------------------------*/
+int cmListFileLexer_SetFileName(cmListFileLexer* lexer, const char* name)
+{
+  int result = 1;
+  if(lexer->file)
+    {
+    yylex_destroy(lexer->scanner);
+    fclose(lexer->file);
+    lexer->file = 0;
+    }
+  if(name)
+    {
+    lexer->file = fopen(name, "r");
+    if(!lexer->file)
+      {
+      result = 0;
+      }
+    }
+  if(lexer->file)
+    {
+    yylex_init(&lexer->scanner);
+    yyset_in(lexer->file, lexer->scanner);
+    }
+  return result;
+}
+
+/*--------------------------------------------------------------------------*/
+cmListFileLexer_Token* cmListFileLexer_Scan(cmListFileLexer* lexer)
+{
+  if(!lexer->file)
+    {
+    return 0;
+    }
+  if(yylex(lexer->scanner, lexer))
+    {
+    return &lexer->token;
+    }
+  else
+    {
+    cmListFileLexer_SetFileName(lexer, 0);
+    return 0;
+    }
+}
+
+/*--------------------------------------------------------------------------*/
+long cmListFileLexer_GetCurrentLine(cmListFileLexer* lexer)
+{
+  if(lexer->file)
+    {
+    return lexer->line;
+    }
+  else
+    {
+    return 0;
+    }
+}
+
+/*--------------------------------------------------------------------------*/
+long cmListFileLexer_GetCurrentColumn(cmListFileLexer* lexer)
+{
+  if(lexer->file)
+    {
+    return lexer->column;
+    }
+  else
+    {
+    return 0;
+    }
+}