2005-06-08 Frank Ch. Eigler <fche@redhat.com>

	systemtap/916
	Implement all basic scalar operators, including modify-assignment.
	* parse.cxx (lexer): Allow multi-character lookahead in order to
	scan 1/2/3-character operators.
	(parse_boolean_or/and/xor/shift): New routines.
	* translate.cxx (visit_assignment, visit_binary_expression,
	visit_*_crement): Generally rewrote.
	(visit_*): Added more parentheses in output.
	(emit_module_init): Initialize globals.
	* staptree.h, elaborate.cxx, elaborate.h: Remove exponentiation.
	* main.cxx (main): Add an end-of-line to output file.
	* testsuite/*: Several new tests.

1 files changed, 6 insertions, 1 deletions

diff --git a/parse.h b/parse.h
index 29ae41c8..b7054b0d 100644
--- a/parse.h
+++ b/parse.h
@@ -57,8 +57,10 @@ public:
 
 private:
   int input_get ();
+  int input_peek (unsigned n=0);
   std::istream& input;
   std::string input_name;
+  std::vector<int> lookahead;
   unsigned cursor_line;
   unsigned cursor_column;
 };
@@ -115,13 +117,16 @@ private: // nonterminals
   expression* parse_ternary ();
   expression* parse_logical_or ();
   expression* parse_logical_and ();
+  expression* parse_boolean_or ();
+  expression* parse_boolean_xor ();
+  expression* parse_boolean_and ();
   expression* parse_array_in ();
   expression* parse_comparison ();
+  expression* parse_shift ();
   expression* parse_concatenation ();
   expression* parse_additive ();
   expression* parse_multiplicative ();
   expression* parse_unary ();
-  expression* parse_exponentiation ();
   expression* parse_crement ();
   expression* parse_value ();
   expression* parse_symbol ();