Mercurial > hg > octave-nkf
changeset 18157:bf638abc95de
eliminate constant folding in parser
* oct-parse.in.yy (fold): Delete functions and all uses.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Fri, 13 Dec 2013 17:24:57 -0500 |
parents | 1c22f0465c74 |
children | 8071c0a9d193 |
files | libinterp/parse-tree/oct-parse.in.yy |
diffstat | 1 files changed, 4 insertions(+), 107 deletions(-) [+] |
line wrap: on
line diff
--- a/libinterp/parse-tree/oct-parse.in.yy +++ b/libinterp/parse-tree/oct-parse.in.yy @@ -1940,95 +1940,6 @@ } } -static tree_expression * -fold (tree_binary_expression *e) -{ - tree_expression *retval = e; - - unwind_protect frame; - - frame.protect_var (error_state); - frame.protect_var (warning_state); - - frame.protect_var (discard_error_messages); - frame.protect_var (discard_warning_messages); - - discard_error_messages = true; - discard_warning_messages = true; - - tree_expression *op1 = e->lhs (); - tree_expression *op2 = e->rhs (); - - if (op1->is_constant () && op2->is_constant ()) - { - octave_value tmp = e->rvalue1 (); - - if (! (error_state || warning_state)) - { - tree_constant *tc_retval - = new tree_constant (tmp, op1->line (), op1->column ()); - - std::ostringstream buf; - - tree_print_code tpc (buf); - - e->accept (tpc); - - tc_retval->stash_original_text (buf.str ()); - - delete e; - - retval = tc_retval; - } - } - - return retval; -} - -static tree_expression * -fold (tree_unary_expression *e) -{ - tree_expression *retval = e; - - unwind_protect frame; - - frame.protect_var (error_state); - frame.protect_var (warning_state); - - frame.protect_var (discard_error_messages); - frame.protect_var (discard_warning_messages); - - discard_error_messages = true; - discard_warning_messages = true; - - tree_expression *op = e->operand (); - - if (op->is_constant ()) - { - octave_value tmp = e->rvalue1 (); - - if (! (error_state || warning_state)) - { - tree_constant *tc_retval - = new tree_constant (tmp, op->line (), op->column ()); - - std::ostringstream buf; - - tree_print_code tpc (buf); - - e->accept (tpc); - - tc_retval->stash_original_text (buf.str ()); - - delete e; - - retval = tc_retval; - } - } - - return retval; -} - // Finish building a range. tree_expression * @@ -2084,8 +1995,6 @@ e->preserve_base (); delete e; - // FIXME -- need to attempt constant folding here - // too (we need a generic way to do that). retval = base; } } @@ -2298,10 +2207,7 @@ int l = tok_val->line (); int c = tok_val->column (); - tree_binary_expression *e - = maybe_compound_binary_expression (op1, op2, l, c, t); - - return fold (e); + return maybe_compound_binary_expression (op1, op2, l, c, t); } // Build a boolean expression. @@ -2330,10 +2236,7 @@ int l = tok_val->line (); int c = tok_val->column (); - tree_boolean_expression *e - = new tree_boolean_expression (op1, op2, l, c, t); - - return fold (e); + return new tree_boolean_expression (op1, op2, l, c, t); } // Build a prefix expression. @@ -2374,10 +2277,7 @@ int l = tok_val->line (); int c = tok_val->column (); - tree_prefix_expression *e - = new tree_prefix_expression (op1, l, c, t); - - return fold (e); + return new tree_prefix_expression (op1, l, c, t); } // Build a postfix expression. @@ -2414,10 +2314,7 @@ int l = tok_val->line (); int c = tok_val->column (); - tree_postfix_expression *e - = new tree_postfix_expression (op1, l, c, t); - - return fold (e); + return new tree_postfix_expression (op1, l, c, t); } // Build an unwind-protect command.