1 files changed, 151 insertions, 0 deletions
diff --git a/Source/LexerParser/cmCommandArgumentLexer.in.l b/Source/LexerParser/cmCommandArgumentLexer.in.l
new file mode 100644
index 0000000..010d54b
--- /dev/null
+++ b/Source/LexerParser/cmCommandArgumentLexer.in.l
@@ -0,0 +1,151 @@
+%{
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+/*
+
+This file must be translated to C++ and modified to build everywhere.
+
+Run flex >= 2.6 like this:
+
+  flex --nounistd -DFLEXINT_H --noline --header-file=cmCommandArgumentLexer.h -ocmCommandArgumentLexer.cxx cmCommandArgumentLexer.in.l
+
+Modify cmCommandArgumentLexer.cxx:
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmCommandArgumentLexer.h cmCommandArgumentLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmCommandArgumentLexer.h cmCommandArgumentLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmCommandArgumentLexer.cxx
+
+*/
+
+/* IWYU pragma: no_forward_declare yyguts_t */
+
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
+#include "cmCommandArgumentParserHelper.h"
+
+/* Replace the lexer input function.  */
+#undef YY_INPUT
+#define YY_INPUT(buf, result, max_size) \
+  do { result = yyextra->LexInput(buf, max_size); } while (0)
+
+/* Include the set of tokens from the parser.  */
+#include "cmCommandArgumentParserTokens.h"
+
+static const char *DCURLYVariable = "${";
+static const char *RCURLYVariable = "}";
+static const char *ATVariable = "@";
+static const char *DOLLARVariable = "$";
+static const char *LCURLYVariable = "{";
+static const char *BSLASHVariable = "\\";
+
+/*--------------------------------------------------------------------------*/
+%}
+
+%option prefix="cmCommandArgument_yy"
+
+%option reentrant
+%option noyywrap
+%option nounput
+%pointer
+%s ESCAPES
+%s NOESCAPES
+
+%%
+
+\$ENV\{ {
+  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
+  yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2);
+  return cal_ENVCURLY;
+}
+
+\$[A-Za-z0-9/_.+-]+\{ {
+  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
+  yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2);
+  return cal_NCURLY;
+}
+
+@[A-Za-z0-9/_.+-]+@ {
+  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
+  yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2);
+  return cal_ATNAME;
+}
+
+"${" {
+  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
+  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  yylvalp->str = DCURLYVariable;
+  return cal_DCURLY;
+}
+
+"}" {
+  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
+  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  yylvalp->str = RCURLYVariable;
+  return cal_RCURLY;
+}
+
+"@" {
+  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
+  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  yylvalp->str = ATVariable;
+  return cal_AT;
+}
+
+[A-Za-z0-9/_.+-]+ {
+  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
+  yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  return cal_NAME;
+}
+
+<ESCAPES>\\. {
+  if ( !yyextra->HandleEscapeSymbol(yylvalp, *(yytext+1)) )
+    {
+    return cal_ERROR;
+    }
+  return cal_SYMBOL;
+}
+
+[^\${}\\@]+ {
+  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
+  yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  return cal_SYMBOL;
+}
+
+"$" {
+  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  yylvalp->str = DOLLARVariable;
+  return cal_DOLLAR;
+}
+
+"{" {
+  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  yylvalp->str = LCURLYVariable;
+  return cal_LCURLY;
+}
+
+<ESCAPES>"\\" {
+  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  yylvalp->str = BSLASHVariable;
+  return cal_BSLASH;
+}
+
+<NOESCAPES>"\\" {
+  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
+  yylvalp->str = BSLASHVariable;
+  return cal_SYMBOL;
+}
+
+%%
+
+/*--------------------------------------------------------------------------*/
+void cmCommandArgument_SetupEscapes(yyscan_t yyscanner, bool noEscapes)
+{
+  /* Hack into the internal flex-generated scanner to set the state.  */
+  struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
+  if(noEscapes) {
+    BEGIN(NOESCAPES);
+  } else {
+    BEGIN(ESCAPES);
+  }
+}
+
+#endif /* __clang_analyzer__ */