Factor report_unexpected_token out into its own function.

passes/techmap/libparse.cc

@@ -332,24 +332,8 @@ int LibertyParser::lexer(std::string &str)
 	return c;
 }
 
-LibertyAst *LibertyParser::parse()
+void LibertyParser::report_unexpected_token(int tok)
 {
-	std::string str;
-
-	int tok = lexer(str);
-
-	// there are liberty files in the wild that
-	// have superfluous ';' at the end of
-	// a  { ... }. We simply ignore a ';' here.
-	// and get to the next statement.
-
-	while ((tok == 'n') || (tok == ';'))
-		tok = lexer(str);
-
-	if (tok == '}' || tok < 0)
-		return NULL;
-
-	if (tok != 'v') {
 	std::string eReport;
 	switch(tok)
 	{
@@ -368,10 +352,33 @@ LibertyAst *LibertyParser::parse()
 		error(eReport);
 		break;
 	default:
-			error();
+		eReport = "Unexpected token: ";
+		eReport += static_cast<char>(tok);
+		error(eReport);
 	}
 }
 
+LibertyAst *LibertyParser::parse()
+{
+	std::string str;
+
+	int tok = lexer(str);
+
+	// there are liberty files in the wild that
+	// have superfluous ';' at the end of
+	// a  { ... }. We simply ignore a ';' here.
+	// and get to the next statement.
+
+	while ((tok == 'n') || (tok == ';'))
+		tok = lexer(str);
+
+	if (tok == '}' || tok < 0)
+		return NULL;
+
+	if (tok != 'v') {
+		report_unexpected_token(tok);	
+	}
+
 	LibertyAst *ast = new LibertyAst;
 	ast->id = str;
 
@@ -460,25 +467,7 @@ LibertyAst *LibertyParser::parse()
 					continue;           
 				}
 				if (tok != 'v') {
-					std::string eReport;
-					switch(tok)
-					{
-					case 'n':
-					  continue;
-					case '[':
-					case ']':
-					case '}':
-					case '{':
-					case '\"':
-					case ':':
-						eReport = "Unexpected '";
-						eReport += static_cast<char>(tok);
-						eReport += "'.";
-						error(eReport);
-						break;
-					default:
-						error();
-					}
+					report_unexpected_token(tok);
 				}
 				ast->args.push_back(arg);
 			}
@@ -495,7 +484,7 @@ LibertyAst *LibertyParser::parse()
 			break;
 		}
 
-		error();
+		report_unexpected_token(tok);
 	}
 
 	return ast;

passes/techmap/libparse.h

@@ -105,6 +105,7 @@ namespace Yosys
 		*/
 		int lexer(std::string &str);
 
+    void report_unexpected_token(int tok);
 		LibertyAst *parse();
 		void error() const;
 		void error(const std::string &str) const;