Added support for user-defined string literals.

Added testcase cpp0x_userdefined_literals.i


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/branches/gsoc2009-matevz@11494 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/common.mk

@@ -410,7 +410,8 @@ CPP0X_TEST_CASES = \
 	cpp0x_strongly_typed_enumerations \
 	cpp0x_rvalue_reference \
 	cpp0x_variadic_templates \
-        cpp0x_alternate_function_syntax
+        cpp0x_alternate_function_syntax \
+	cpp0x_userdefined_literals
 #	cpp0x_hash_types # not fully implemented yet
 #	cpp0x_lambda_functions      # not supported by GCC or MSVC yet
 #	cpp0x_null_pointer_constant # not supported by any compilers yet

Examples/test-suite/cpp0x_userdefined_literals.i

@@ -0,0 +1,24 @@
+/* This testcase checks whether Swig correctly parses the user-defined literals
+   for the string introduced in C++0x. */
+%module cpp0x_userdefined_literals
+
+%inline %{
+#include <iostream>
+
+struct OutputType {
+	int val;
+
+	OutputType(int v) { v=val; }	
+};
+
+struct TT {
+OutputType operator << (const char * string_values, size_t num_chars) { return OutputType(100); }
+OutputType operator "" (const char * string_values, size_t num_chars) { return OutputType(100); }
+OutputType operator "" _mySuffix1(const char * string_values, size_t num_chars) { return OutputType(100); }
+OutputType operator "" _mySuffix2(const wchar_t * string_values, size_t num_chars) { return OutputType(200); }
+OutputType operator "" _mySuffix3(const char16_t * string_values, size_t num_chars) { return OutputType(300); }
+OutputType operator "" _mySuffix4(const char32_t * string_values, size_t num_chars) { return OutputType(400); }
+OutputType operator "" _mySuffix5(int value) /* cooked version - ie. atoi() of string */ { return OutputType(500); }
+};
+
+%}

Source/CParse/cscanner.c

@@ -688,6 +688,11 @@ int yylex(void) {
 	      yylval.str = s;
 	      return OPERATOR;
 	    }
+	  } else if (nexttok == SWIG_TOKEN_STRING) {
+	    /* Operator "" or user-defined string literal ""_suffix */
+	    Append(s,"\"\"");
+	    yylval.str = s;
+	    return OPERATOR;
 	  } else if (nexttok == SWIG_TOKEN_ID) {
 	    /* We have an identifier.  This could be any number of things. It could be a named version of
                an operator (e.g., 'and_eq') or it could be a conversion operator.   To deal with this, we're

Source/CParse/parser.y

@@ -5227,6 +5227,27 @@ direct_declarator : idcolon {
 		      Delete($$.type);
 		      $$.type = t;
 		    }
+                 }
+                 /* User-defined string literals. eg.
+                    int operator""_mySuffix(const char* val, int length) {...} */
+		 /* This produces one S/R conflict. */
+                 | OPERATOR ID LPAREN parms RPAREN {
+		    SwigType *t;
+                    Append($1, Char($2));
+		    $$.id = Char($1);
+		    t = NewStringEmpty();
+		    SwigType_add_function(t,$4);
+		    if (!$$.have_parms) {
+		      $$.parms = $4;
+		      $$.have_parms = 1;
+		    }
+		    if (!$$.type) {
+		      $$.type = t;
+		    } else {
+		      SwigType_push(t, $$.type);
+		      Delete($$.type);
+		      $$.type = t;
+		    }
 		  }
                   ;