X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fglsl%2Fpreprocessor.cpp;h=ea6dd6de700fce75cb96141fd021b7b1ec5146bb;hb=3fe1aab63922eec99d8bf6fd4fd60bec10df173c;hp=354b2a7a84b6d8f6a0fda875f8b396caaba211df;hpb=7a16308e72aef363727b21348779673edf8e5c07;p=libs%2Fgl.git

diff --git a/source/glsl/preprocessor.cpp b/source/glsl/preprocessor.cpp
index 354b2a7a..ea6dd6de 100644
--- a/source/glsl/preprocessor.cpp
+++ b/source/glsl/preprocessor.cpp
@@ -1,3 +1,4 @@
+#include <msp/strings/utils.h>
 #include "glsl_error.h"
 #include "preprocessor.h"
 #include "tokenizer.h"
@@ -19,8 +20,10 @@ void Preprocessor::preprocess()
 		preprocess_pragma();
 	else if(token=="version")
 		preprocess_version();
+	else if(token=="line")
+		preprocess_line();
 	else if(token=="define" || token=="undef" || token=="if" || token=="ifdef" || token=="ifndef" || token=="else" ||
-		token=="elif" || token=="endif" || token=="error" || token=="extension" || token=="line")
+		token=="elif" || token=="endif" || token=="error" || token=="extension")
 		throw invalid_shader_source(tokenizer.get_location(), "Unsupported preprocessor directive '%s'", token);
 	else if(!token.empty())
 		throw parse_error(tokenizer.get_location(), token, "a preprocessor directive");
@@ -38,6 +41,23 @@ void Preprocessor::preprocess_version()
 		throw parse_error(tokenizer.get_location(), token, "end of line");
 }
 
+void Preprocessor::preprocess_line()
+{
+	tokenizer.expect("line");
+	unsigned line_number = lexical_cast<unsigned>(tokenizer.parse_token());
+
+	int source_index = -1;
+	string token = tokenizer.parse_token();
+	if(!token.empty())
+		source_index = lexical_cast<unsigned>(token);
+
+	token = tokenizer.parse_token();
+	if(!token.empty())
+		throw parse_error(tokenizer.get_location(), token, "end of line");
+
+	signal_line.emit(source_index, line_number);
+}
+
 void Preprocessor::preprocess_pragma()
 {
 	tokenizer.expect("pragma");
@@ -51,6 +71,8 @@ void Preprocessor::preprocess_pragma_msp()
 	string token = tokenizer.peek_token();
 	if(token=="stage")
 		preprocess_stage();
+	else if(token=="source")
+		preprocess_source();
 	else
 		throw invalid_shader_source(tokenizer.get_location(), "Unrecognized MSP pragma '%s'", token);
 
@@ -78,6 +100,21 @@ void Preprocessor::preprocess_stage()
 	signal_stage_change.emit(stage);
 }
 
+void Preprocessor::preprocess_source()
+{
+	tokenizer.expect("source");
+	tokenizer.expect("(");
+	unsigned source_index = lexical_cast<unsigned>(tokenizer.parse_token());
+	tokenizer.expect(",");
+	string filename = tokenizer.parse_token();
+	if(filename[0]!='"')
+		throw parse_error(tokenizer.get_location(), filename, "a string literal");
+	filename = c_unescape(filename.substr(1, filename.size()-2));
+	tokenizer.expect(")");
+
+	signal_source.emit(source_index, filename);
+}
+
 } // namespace SL
 } // namespace GL
 } // namespace Msp