From 12f606ce06ef926f366a03079c5e3107c23f18af Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Fri, 19 Nov 2010 13:18:48 +0000
Subject: Added tool bison++-1.21.11

---
 tools/bison++/Example/MyParser.y | 55 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 tools/bison++/Example/MyParser.y

(limited to 'tools/bison++/Example/MyParser.y')

diff --git a/tools/bison++/Example/MyParser.y b/tools/bison++/Example/MyParser.y
new file mode 100644
index 000000000..f8787eb34
--- /dev/null
+++ b/tools/bison++/Example/MyParser.y
@@ -0,0 +1,55 @@
+%{
+#define YY_MyParser_STYPE yy_MyParser_stype
+%}
+%name MyParser
+%define LSP_NEEDED
+%define ERROR_BODY =0
+%define LEX_BODY =0
+%header{
+#include <iostream>
+#include <string>
+  using namespace std;
+#define YY_DECL int yyFlexLexer::yylex(YY_MyParser_STYPE *val)
+#ifndef FLEXFIX
+#define FLEXFIX YY_MyParser_STYPE *val
+#define FLEXFIX2 val
+#endif
+%}
+
+%union {
+  int num;
+  bool statement;
+  }
+
+
+
+%token <num> PLUS INTEGER MINUS  AND OR NOT LPARA RPARA
+%token <statement> BOOLEAN
+%type <num> exp result
+%type <statement> bexp
+%start result
+
+%left OR
+%left AND
+%left PLUS MINUS
+%left NOT
+%left LPARA RPARA
+
+%%
+
+result          : exp {cout << "Result = " << $1 << endl;}
+                | bexp {cout << "Result = " << $1 << endl;}
+
+exp		: exp PLUS exp {$$ = $1 + $3;}
+       		| INTEGER {$$ = $1;}
+                | MINUS exp { $$ = -$2;}
+                | exp MINUS exp {$$ = $1 - $3;}
+
+bexp            : BOOLEAN {$$ = $1;}
+		| bexp AND bexp { $$ = $1 && $3;}
+		| bexp OR bexp { $$ = $1 || $3;}
+		| NOT bexp {$$ = !$2;}
+		| LPARA bexp RPARA {$$ = $2}
+%%
+/* -------------- body section -------------- */
+// feel free to add your own C/C++ code here
-- 
cgit v1.2.3