--- parser3/src/classes/op.C	2008/02/14 09:10:23	1.174
+++ parser3/src/classes/op.C	2008/05/26 14:23:46	1.178
@@ -5,7 +5,7 @@
 	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
 */
 
-static const char * const IDENT_OP_C="$Date: 2008/02/14 09:10:23 $";
+static const char * const IDENT_OP_C="$Date: 2008/05/26 14:23:46 $";
 
 #include "classes.h"
 #include "pa_vmethod_frame.h"
@@ -102,19 +102,22 @@ static void _if(Request& r, MethodParams
 		r.write_pass_lang(r.process(*params.get(2)));
 }
 
-static void _untaint(Request& r, MethodParams& params) {
+static String::Language get_untaint_lang(MethodParams& params, int index){
+	const String& lang_name=params.as_string(index, "lang must be string");
+	String::Language lang=untaint_lang_name2enum.get(lang_name);
+	if(!lang)
+		throw Exception(0,
+			&lang_name,
+			"invalid taint language");
+	return lang;
+}
 
+static void _untaint(Request& r, MethodParams& params) {
 	String::Language lang;
 	if(params.count()==1)
-		lang=String::L_AS_IS; // mark as simply 'tainted'. useful in html from sql 
-	else {
-		const String& lang_name=params.as_string(0, "lang must be string");
-		lang=untaint_lang_name2enum.get(lang_name);
-		if(!lang)
-			throw Exception(0,
-				&lang_name,
-				"invalid taint language");
-	}
+		lang=String::L_AS_IS; // mark as simply 'as-is'. useful in html from sql 
+	else
+		lang=get_untaint_lang(params, 0);
 
 	{
 		Value& vbody=params.as_junction(params.count()-1, "body must be code");
@@ -127,15 +130,9 @@ static void _untaint(Request& r, MethodP
 static void _taint(Request& r, MethodParams& params) {
 	String::Language lang;
 	if(params.count()==1)
-		lang=String::L_TAINTED; // mark as simply 'tainted'. useful in table:set
-	else {
-		const String& lang_name=params.as_string(0, "lang must be string");
-		lang=untaint_lang_name2enum.get(lang_name);
-		if(!lang)
-			throw Exception(0,
-				&lang_name,
-				"invalid taint language");
-	}
+		lang=String::L_TAINTED; // mark as simply 'tainted'. useful in table:create
+	else
+		lang=get_untaint_lang(params, 0);
 
 	{
 		Value& vbody=params.as_no_junction(params.count()-1, "body must not be code");
@@ -268,7 +265,8 @@ static void _while(Request& r, MethodPar
 		if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
 			if(need_delim) // need delim & iteration produced string?
 				r.write_pass_lang(r.process(*delim_maybe_code));
-			need_delim=true;
+			else
+				need_delim=true;
 		}
 		r.write_pass_lang(sv_processed);
 
@@ -329,7 +327,8 @@ static void _for(Request& r, MethodParam
 		if(delim_maybe_code && s_processed && s_processed->length()) { // delimiter set and we have body
 			if(need_delim) // need delim & iteration produced string?
 				r.write_pass_lang(r.process(*delim_maybe_code));
-			need_delim=true;
+			else
+				need_delim=true;
 		}
 		r.write_pass_lang(sv_processed);
 
@@ -344,8 +343,12 @@ static void _eval(Request& r, MethodPara
 	Value& value_result=r.process_to_value(expr, 
 		false/*don't intercept string*/).as_expr_result();
 	if(params.count()>1) {
-		Value& fmt=params.as_no_junction(1, "fmt must not be code");
-		r.write_no_lang(String(format(value_result.as_double(), fmt.as_string().cstrm())));
+		const String& fmt=params.as_string(1, "fmt must be string").trim();
+		if(fmt.is_empty()){
+			r.write_no_lang(value_result);
+		} else {
+			r.write_no_lang(String(format(value_result.as_double(), fmt.cstrm())));
+		}
 	} else
 		r.write_no_lang(value_result);
 }
@@ -777,7 +780,7 @@ static void _try_operator(Request& r, Me
 }
 
 static void _throw_operator(Request&, MethodParams& params) {
-	if(params.count()==1) {
+	if(params.count()==1 && !params[0].is_string()) {
 		if(HashStringValue *hash=params[0].get_hash()) {
 			const char* type=0;
 			if(Value* value=hash->get(exception_type_part_name))
@@ -795,13 +798,12 @@ static void _throw_operator(Request&, Me
 		} else
 			throw Exception(PARSER_RUNTIME,
 				0,
-				"one-param version has hash param");
+				"one-param version has hash or string param");
 	} else {
 		const char* type=params.as_string(0, "type must be string").cstr();
-		const String& source=params.as_string(1, "source must be string");
-		const char* comment=params.count()>2? params.as_string(2, "comment must be string").cstr()
-			:0;
-		throw Exception(type, &source, "%s", comment?comment:"");
+		const String* source=params.count()>1? &params.as_string(1, "source must be string"):0;
+		const char* comment=params.count()>2? params.as_string(2, "comment must be string").cstr():0;
+		throw Exception(type, source, "%s", comment?comment:"");
 	}
  }