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parse.y: simplify 90e8ce5

simplify tOP_ASGN rules by command_rhs and arg_rhs rules with
%prec.
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nobu committed Aug 12, 2016
1 parent 90e8ce5 commit a06940daa9d4c3d9e213f2a8b679a7c2397c9ccb
Showing with 31 additions and 88 deletions.
  1. +31 −88 mrbgems/mruby-compiler/core/parse.y
@@ -1097,12 +1097,12 @@ heredoc_end(parser_state *p)
%type <nd> literal numeric cpath symbol
%type <nd> top_compstmt top_stmts top_stmt
%type <nd> bodystmt compstmt stmts stmt expr arg primary command command_call method_call
%type <nd> expr_value arg_value primary_value
%type <nd> expr_value arg_value arg_rhs primary_value
%type <nd> if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure
%type <nd> args call_args opt_call_args
%type <nd> paren_args opt_paren_args variable
%type <nd> command_args aref_args opt_block_arg block_arg var_ref var_lhs
%type <nd> command_asgn mrhs superclass block_call block_command
%type <nd> command_asgn command_rhs mrhs superclass block_call block_command
%type <nd> f_block_optarg f_block_opt
%type <nd> f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs
%type <nd> assoc_list assocs assoc undef_list backref for_var
@@ -1318,57 +1318,32 @@ stmt : keyword_alias fsym {p->lstate = EXPR_FNAME;} fsym
{
$$ = new_masgn(p, $1, $3);
}
| var_lhs tOP_ASGN command_call
| var_lhs tOP_ASGN command_rhs
{
$$ = new_op_asgn(p, $1, $2, $3);
}
| var_lhs tOP_ASGN command_call modifier_rescue stmt
{
$$ = new_op_asgn(p, $1, $2, new_mod_rescue(p, $3, $5));
}
| primary_value '[' opt_call_args rbracket tOP_ASGN command_call
| primary_value '[' opt_call_args rbracket tOP_ASGN command_rhs
{
$$ = new_op_asgn(p, new_call(p, $1, intern("[]",2), $3, '.'), $5, $6);
}
| primary_value '[' opt_call_args rbracket tOP_ASGN command_call modifier_rescue stmt
{
$$ = new_op_asgn(p, new_call(p, $1, intern("[]",2), $3, '.'), $5, new_mod_rescue(p, $6, $8));
}
| primary_value call_op tIDENTIFIER tOP_ASGN command_call
| primary_value call_op tIDENTIFIER tOP_ASGN command_rhs
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, $5);
}
| primary_value call_op tIDENTIFIER tOP_ASGN command_call modifier_rescue stmt
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, new_mod_rescue(p, $5, $7));
}
| primary_value call_op tCONSTANT tOP_ASGN command_call
| primary_value call_op tCONSTANT tOP_ASGN command_rhs
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, $5);
}
| primary_value call_op tCONSTANT tOP_ASGN command_call modifier_rescue stmt
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, new_mod_rescue(p, $5, $7));
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN command_call
{
yyerror(p, "constant re-assignment");
$$ = 0;
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_call
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_rhs
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, tCOLON2), $4, $5);
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_call modifier_rescue stmt
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, tCOLON2), $4, new_mod_rescue(p, $5, $7));
}
| backref tOP_ASGN command_call
{
backref_error(p, $1);
$$ = new_begin(p, 0);
}
| backref tOP_ASGN command_call modifier_rescue stmt
| backref tOP_ASGN command_rhs
{
backref_error(p, $1);
$$ = new_begin(p, 0);
@@ -1388,18 +1363,18 @@ stmt : keyword_alias fsym {p->lstate = EXPR_FNAME;} fsym
| expr
;
command_asgn : lhs '=' command_call
command_asgn : lhs '=' command_rhs
{
$$ = new_asgn(p, $1, $3);
}
| lhs '=' command_call modifier_rescue stmt
{
$$ = new_asgn(p, $1, new_mod_rescue(p, $3, $5));
}
| lhs '=' command_asgn
;
command_rhs : command_call %prec tOP_ASGN
| command_call modifier_rescue stmt
{
$$ = new_asgn(p, $1, $3);
$$ = new_mod_rescue(p, $1, $3);
}
| command_asgn
;
@@ -1759,80 +1734,41 @@ reswords : keyword__LINE__ | keyword__FILE__ | keyword__ENCODING__
| keyword_while | keyword_until
;
arg : lhs '=' arg
arg : lhs '=' arg_rhs
{
$$ = new_asgn(p, $1, $3);
}
| lhs '=' arg modifier_rescue arg
{
$$ = new_asgn(p, $1, new_mod_rescue(p, $3, $5));
}
| var_lhs tOP_ASGN arg
| var_lhs tOP_ASGN arg_rhs
{
$$ = new_op_asgn(p, $1, $2, $3);
}
| var_lhs tOP_ASGN arg modifier_rescue arg
{
$$ = new_op_asgn(p, $1, $2, new_mod_rescue(p, $3, $5));
}
| primary_value '[' opt_call_args rbracket tOP_ASGN arg
| primary_value '[' opt_call_args rbracket tOP_ASGN arg_rhs
{
$$ = new_op_asgn(p, new_call(p, $1, intern("[]",2), $3, '.'), $5, $6);
}
| primary_value '[' opt_call_args rbracket tOP_ASGN arg modifier_rescue arg
{
$$ = new_op_asgn(p, new_call(p, $1, intern("[]",2), $3, '.'), $5, new_mod_rescue(p, $6, $8));
}
| primary_value call_op tIDENTIFIER tOP_ASGN arg
| primary_value call_op tIDENTIFIER tOP_ASGN arg_rhs
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, $5);
}
| primary_value call_op tIDENTIFIER tOP_ASGN arg modifier_rescue arg
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, new_mod_rescue(p, $5, $7));
}
| primary_value call_op tCONSTANT tOP_ASGN arg
| primary_value call_op tCONSTANT tOP_ASGN arg_rhs
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, $5);
}
| primary_value call_op tCONSTANT tOP_ASGN arg modifier_rescue arg
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, $2), $4, new_mod_rescue(p, $5, $7));
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg_rhs
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, tCOLON2), $4, $5);
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg modifier_rescue arg
{
$$ = new_op_asgn(p, new_call(p, $1, $3, 0, tCOLON2), $4, new_mod_rescue(p, $5, $7));
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN arg
{
yyerror(p, "constant re-assignment");
$$ = new_begin(p, 0);
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN arg modifier_rescue arg
{
yyerror(p, "constant re-assignment");
$$ = new_begin(p, 0);
}
| tCOLON3 tCONSTANT tOP_ASGN arg
| primary_value tCOLON2 tCONSTANT tOP_ASGN arg_rhs
{
yyerror(p, "constant re-assignment");
$$ = new_begin(p, 0);
}
| tCOLON3 tCONSTANT tOP_ASGN arg modifier_rescue arg
| tCOLON3 tCONSTANT tOP_ASGN arg_rhs
{
yyerror(p, "constant re-assignment");
$$ = new_begin(p, 0);
}
| backref tOP_ASGN arg
{
backref_error(p, $1);
$$ = new_begin(p, 0);
}
| backref tOP_ASGN arg modifier_rescue arg
| backref tOP_ASGN arg_rhs
{
backref_error(p, $1);
$$ = new_begin(p, 0);
@@ -1995,6 +1931,13 @@ aref_args : none
}
;
arg_rhs : arg %prec tOP_ASGN
| arg modifier_rescue arg
{
$$ = new_mod_rescue(p, $1, $3);
}
;
paren_args : '(' opt_call_args rparen
{
$$ = $2;

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