X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fprogramparser.cpp;h=c02adb325c25eaba6d4df7f31d9b8963506a5cd4;hp=f38f39097615c94185c0d4bf7504d70e0dc7d646;hb=ff85f90d33023d908c534b0bf5d9a65e9fc2cce2;hpb=684fadb0eb3e6a7dc274d6ed26abd28d5787d60d

diff --git a/source/programparser.cpp b/source/programparser.cpp
index f38f3909..c02adb32 100644
--- a/source/programparser.cpp
+++ b/source/programparser.cpp
@@ -263,7 +263,7 @@ void ProgramParser::skip_comment_and_whitespace()
 		{
 			if(*iter=='/')
 				comment = 0;
-			else
+			else if(*iter!='*')
 				comment = 3;
 		}
 
@@ -315,7 +315,12 @@ bool ProgramParser::is_interface_qualifier(const string &token)
 
 bool ProgramParser::is_sampling_qualifier(const string &token)
 {
-	return token=="centroid";
+	return (token=="centroid" || token=="sample");
+}
+
+bool ProgramParser::is_interpolation_qualifier(const string &token)
+{
+	return (token=="smooth" || token=="flat" || token=="noperspective");
 }
 
 bool ProgramParser::is_precision_qualifier(const string &token)
@@ -325,7 +330,11 @@ bool ProgramParser::is_precision_qualifier(const string &token)
 
 bool ProgramParser::is_qualifier(const string &token)
 {
-	return (token=="const" || is_interface_qualifier(token) || is_sampling_qualifier(token) || is_precision_qualifier(token));
+	return (token=="const" ||
+		is_interface_qualifier(token) ||
+		is_sampling_qualifier(token) ||
+		is_interpolation_qualifier(token) ||
+		is_precision_qualifier(token));
 }
 
 bool ProgramParser::is_builtin_type(const string &token)
@@ -449,7 +458,7 @@ RefPtr<Node> ProgramParser::parse_global_declaration()
 	else if(is_interface_qualifier(token))
 	{
 		string next = peek_token(1);
-		if(is_type(next) || is_precision_qualifier(next))
+		if(is_type(next) || is_qualifier(next))
 			return parse_variable_declaration();
 		else
 			return parse_interface_block();
@@ -475,7 +484,9 @@ RefPtr<Node> ProgramParser::parse_statement()
 	if(token=="if")
 		return parse_conditional();
 	else if(token=="for")
-		return parse_iteration();
+		return parse_for();
+	else if(token=="while")
+		return parse_while();
 	else if(token=="passthrough")
 		return parse_passthrough();
 	else if(token=="return")
@@ -718,25 +729,22 @@ RefPtr<VariableDeclaration> ProgramParser::parse_variable_declaration()
 	RefPtr<VariableDeclaration> var = new VariableDeclaration;
 
 	string token = peek_token();
-	if(is_sampling_qualifier(token))
-	{
-		var->sampling = parse_token();
-		token = peek_token();
-		if(!is_interface_qualifier(token))
-			throw runtime_error(format_syntax_error("an interface qualifier"));
-	}
-
-	if(is_interface_qualifier(token))
-		var->interface = parse_token();
-	else if(token=="const")
+	while(is_qualifier(token))
 	{
-		var->constant = true;
 		parse_token();
+		if(is_interface_qualifier(token))
+			var->interface = token;
+		else if(is_sampling_qualifier(token))
+			var->sampling = token;
+		else if(is_interpolation_qualifier(token))
+			var->interpolation = token;
+		else if(is_precision_qualifier(token))
+			var->precision = token;
+		else if(token=="const")
+			var->constant = true;
+		token = peek_token();
 	}
 
-	if(is_precision_qualifier(token))
-		var->precision = parse_token();
-
 	var->type = expect_type();
 	var->name = expect_identifier();
 
@@ -837,7 +845,7 @@ RefPtr<Conditional> ProgramParser::parse_conditional()
 	return cond;
 }
 
-RefPtr<Iteration> ProgramParser::parse_iteration()
+RefPtr<Iteration> ProgramParser::parse_for()
 {
 	expect("for");
 	expect("(");
@@ -847,14 +855,32 @@ RefPtr<Iteration> ProgramParser::parse_iteration()
 		loop->init_statement = parse_statement();
 	else
 	{
-		RefPtr<ExpressionStatement> expr = new ExpressionStatement;
-		expr->expression = parse_expression();
+		if(token!=";")
+		{
+			RefPtr<ExpressionStatement> expr = new ExpressionStatement;
+			expr->expression = parse_expression();
+			loop->init_statement = expr;
+		}
 		expect(";");
-		loop->init_statement = expr;
 	}
-	loop->condition = parse_expression();
+	if(peek_token()!=";")
+		loop->condition = parse_expression();
 	expect(";");
-	loop->loop_expression = parse_expression();
+	if(peek_token()!=")")
+		loop->loop_expression = parse_expression();
+	expect(")");
+
+	parse_block(loop->body, false);
+
+	return loop;
+}
+
+RefPtr<Iteration> ProgramParser::parse_while()
+{
+	expect("while");
+	expect("(");
+	RefPtr<Iteration> loop = new Iteration;
+	loop->condition = parse_expression();
 	expect(")");
 
 	parse_block(loop->body, false);