X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Finput_parser.yy;h=1685c796fec666086f8d44cf8687c91092cd43de;hp=e714c9bf97d0f8f04eedcf31de911fb1fc1b72e6;hb=bfb395b4e24e659fc46abc2d2ad4305168d1c6f2;hpb=ed19b17bdd0513282c75a2684c77aec3f4fa7088

diff --git a/ginac/input_parser.yy b/ginac/input_parser.yy
index e714c9bf..1685c796 100644
--- a/ginac/input_parser.yy
+++ b/ginac/input_parser.yy
@@ -4,7 +4,7 @@
  *  This file must be processed with yacc/bison. */
 
 /*
- *  GiNaC Copyright (C) 1999-2000 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -45,14 +45,11 @@ namespace GiNaC {
 
 #define YYERROR_VERBOSE 1
 
-#define yylex ginac_yylex
-#define yyerror ginac_yyerror
-
 // Parsed output expression
 ex parsed_ex;
 
 // Last error message returned by parser
-static string parser_error;
+static std::string parser_error;
 %}
 
 /* Tokens (T_LITERAL means a literal value returned by the parser, but not
@@ -81,8 +78,8 @@ input	: exp {
 		try {
 			parsed_ex = $1;
 			YYACCEPT;
-		} catch (exception &e) {
-			parser_error = e.what();
+		} catch (std::exception &err) {
+			parser_error = err.what();
 			YYERROR;
 		}
 	}
@@ -90,11 +87,16 @@ input	: exp {
 	;
 
 exp	: T_NUMBER		{$$ = $1;}
-	| T_SYMBOL		{$$ = $1.eval();}
+	| T_SYMBOL {
+		if (is_lexer_symbol_predefined($1))
+			$$ = $1.eval();
+		else
+			throw (std::runtime_error("unknown symbol '" + ex_to_symbol($1).get_name() + "'"));
+	}
 	| T_LITERAL		{$$ = $1;}
 	| T_DIGITS		{$$ = $1;}
 	| T_SYMBOL '(' exprseq ')' {
-		unsigned i = function::find_function(ex_to_symbol($1).getname(), $3.nops());
+		unsigned i = function::find_function(ex_to_symbol($1).get_name(), $3.nops());
 		$$ = function(i, static_cast<const exprseq &>(*($3.bp))).eval(1);
 	}
 	| exp T_EQUAL exp	{$$ = $1 == $3;}
@@ -107,14 +109,13 @@ exp	: T_NUMBER		{$$ = $1;}
 	| exp '-' exp		{$$ = $1 - $3;}
 	| exp '*' exp		{$$ = $1 * $3;}
 	| exp '/' exp		{$$ = $1 / $3;}
-	| exp '%' exp		{$$ = $1 % $3;}
 	| '-' exp %prec NEG	{$$ = -$2;}
 	| '+' exp %prec NEG	{$$ = $2;}
 	| exp '^' exp		{$$ = pow($1, $3);}
 	| exp '!'		{$$ = factorial($1);}
 	| '(' exp ')'		{$$ = $2;}
 	| '[' list_or_empty ']'	{$$ = $2;}
-	| T_MATRIX_BEGIN matrix T_MATRIX_END	{$$ = lst_to_matrix($2);}
+	| T_MATRIX_BEGIN matrix T_MATRIX_END	{$$ = lst_to_matrix(ex_to_lst($2));}
 	;
 
 exprseq	: exp			{$$ = exprseq($1);}
@@ -144,7 +145,7 @@ row	: exp			{$$ = lst($1);}
 
 %%
 // Get last error encountered by parser
-string get_parser_error(void)
+std::string get_parser_error(void)
 {
 	return parser_error;
 }
@@ -158,5 +159,6 @@ using GiNaC::parser_error;
 // Error print routine (store error string in parser_error)
 int ginac_yyerror(char *s)
 {
-	parser_error = string(s) + " at " + string(ginac_yytext);
+	parser_error = std::string(s) + " at " + std::string(ginac_yytext);
+	return 0;
 }