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|
%{
// $Id$
// ========================================================================
//
// = LIBRARY
// orbsvcs / Extended Trader Constraint Language parser.
//
// = FILENAME
// ETCL.yy
//
// = AUTHOR
// Carlos O'Ryan <coryan@uci.edu> based on previous work by
// Seth Widoff <sbw1@cs.wustl.edu>
// Jeff Parsons <j.parsons@vanderbilt.edu>
//
// ========================================================================
#include "ace/ETCL/ETCL_y.h"
#include "ace/ETCL/ETCL_constraint.h"
#include "ace/ETCL/ETCL_Interpreter.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
extern int yylex (void);
extern void yyflush_current_buffer (void);
static void yyerror (const char *)
{
// @@ TODO
// Ignore error messages
}
ACE_END_VERSIONED_NAMESPACE_DECL
#include <stdio.h>
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
%}
%token ETCL_GT
%token ETCL_GE
%token ETCL_LT
%token ETCL_LE
%token ETCL_EQ
%token ETCL_NE
%token ETCL_EXIST
%token ETCL_DEFAULT
%token ETCL_AND
%token ETCL_OR
%token ETCL_NOT
%token ETCL_IN
%token ETCL_TWIDDLE
%token ETCL_BOOLEAN
%token ETCL_PLUS
%token ETCL_MINUS
%token ETCL_MULT
%token ETCL_DIV
%token ETCL_UMINUS
%token ETCL_INTEGER
%token ETCL_FLOAT
%token ETCL_STRING
%token ETCL_RPAREN
%token ETCL_LPAREN
%token ETCL_RBRA
%token ETCL_LBRA
%token ETCL_IDENT
%token ETCL_UNSIGNED
%token ETCL_SIGNED
%token ETCL_DOUBLE
%token ETCL_CONSTRAINT
%token ETCL_COMPONENT
%token ETCL_WITH
%token ETCL_MAX
%token ETCL_MIN
%token ETCL_FIRST
%token ETCL_RANDOM
%token ETCL_DOLLAR
%token ETCL_DOT
%token ETCL_DISCRIMINANT
%token ETCL_LENGTH
%token ETCL_TYPE_ID
%token ETCL_REPOS_ID
%type <constraint> ETCL_IDENT
%type <constraint> ETCL_BOOLEAN
%type <constraint> ETCL_STRING
%type <constraint> ETCL_FLOAT
%type <constraint> ETCL_INTEGER
%type <constraint> expr_in
%type <constraint> constraint preference bool_or bool_and bool_compare
%type <constraint> expr_in expr_twiddle expr term factor_not factor
%type <constraint> union_pos union_val component_array
%type <constraint> component_array component_assoc component_pos
%type <constraint> component_dot component_ext component
%start constraint
%%
constraint: bool_or
| preference
;
preference: ETCL_MIN bool_or
{ $$ = new ETCL_PREFERENCE_CLASS (ETCL_MIN, $2); }
| ETCL_MAX bool_or
{ $$ = new ETCL_PREFERENCE_CLASS (ETCL_MAX, $2); }
| ETCL_WITH bool_or
{ $$ = new ETCL_PREFERENCE_CLASS (ETCL_WITH, $2); }
| ETCL_FIRST
{ $$ = new ETCL_PREFERENCE_CLASS (ETCL_FIRST); }
| ETCL_RANDOM
{ $$ = new ETCL_PREFERENCE_CLASS (ETCL_RANDOM); }
;
bool_or: bool_or ETCL_OR bool_and
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_OR, $1, $3); }
| bool_and
;
bool_and: bool_and ETCL_AND bool_compare
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_AND, $1, $3); }
| bool_compare
;
bool_compare: expr_in ETCL_EQ expr_in
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_EQ, $1, $3); }
| expr_in ETCL_NE expr_in
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_NE, $1, $3); }
| expr_in ETCL_GT expr_in
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_GT, $1, $3); }
| expr_in ETCL_GE expr_in
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_GE, $1, $3); }
| expr_in ETCL_LT expr_in
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_LT, $1, $3); }
| expr_in ETCL_LE expr_in
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_LE, $1, $3); }
| expr_in
;
expr_in: expr_twiddle ETCL_IN component
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_IN, $1, $3); }
| expr_twiddle ETCL_IN ETCL_DOLLAR component
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_IN, $1, $4); }
| expr_twiddle
;
expr_twiddle: expr ETCL_TWIDDLE expr
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_TWIDDLE, $1, $3); }
| expr
;
expr: expr ETCL_PLUS term
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_PLUS, $1, $3); }
| expr ETCL_MINUS term
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_MINUS, $1, $3); }
| term
;
term: term ETCL_MULT factor_not
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_MULT, $1, $3); }
| term ETCL_DIV factor_not
{ $$ = new ETCL_BINARY_EXPR_CLASS (ETCL_DIV, $1, $3); }
| factor_not
;
factor_not: ETCL_NOT factor
{ $$ = new ETCL_UNARY_EXPR_CLASS (ETCL_NOT, $2); }
| factor
;
factor: ETCL_LPAREN bool_or ETCL_RPAREN
{ $$ = $2; }
| ETCL_INTEGER
{ $$ = $1; }
| ETCL_PLUS ETCL_INTEGER
{ $$ = new ETCL_UNARY_EXPR_CLASS (ETCL_PLUS, $2); }
| ETCL_MINUS ETCL_INTEGER
{ $$ = new ETCL_UNARY_EXPR_CLASS (ETCL_MINUS, $2); }
| ETCL_FLOAT
{ $$ = $1; }
| ETCL_PLUS ETCL_FLOAT
{ $$ = new ETCL_UNARY_EXPR_CLASS (ETCL_PLUS, $2); }
| ETCL_MINUS ETCL_FLOAT
{ $$ = new ETCL_UNARY_EXPR_CLASS (ETCL_MINUS, $2); }
| ETCL_STRING
{ $$ = $1; }
| ETCL_BOOLEAN
{ $$ = $1; }
| ETCL_EXIST ETCL_IDENT
{ $$ = new ETCL_EXIST_CLASS ($2); }
| ETCL_EXIST ETCL_DOLLAR component
{ $$ = new ETCL_EXIST_CLASS ($3); }
| ETCL_DEFAULT ETCL_DOLLAR component
{ $$ = new ETCL_DEFAULT_CLASS ($3); }
| ETCL_DOLLAR component
{ $$ = new ETCL_EVAL_CLASS ($2); }
| ETCL_IDENT
{ $$ = $1; }
;
component: /* empty */
{ $$ = 0; }
| ETCL_DOT component_dot
{ $$ = new ETCL_DOT_CLASS ($2); }
| ETCL_IDENT component_ext
{ $$ = new ETCL_COMPONENT_CLASS ($1, $2); }
| component_array
| component_assoc
;
component_ext: /* empty */
{ $$ = 0; }
| ETCL_DOT component_dot
{ $$ = new ETCL_Dot ($2); }
| component_array
| component_assoc
;
component_dot: ETCL_IDENT component_ext
{ $$ = new ETCL_COMPONENT_CLASS ($1, $2); }
| ETCL_LENGTH
{ $$ = new ETCL_SPECIAL_CLASS (ETCL_LENGTH); }
| ETCL_DISCRIMINANT
{ $$ = new ETCL_SPECIAL_CLASS (ETCL_DISCRIMINANT); }
| ETCL_TYPE_ID
{ $$ = new ETCL_SPECIAL_CLASS (ETCL_TYPE_ID); }
| ETCL_REPOS_ID
{ $$ = new ETCL_SPECIAL_CLASS (ETCL_REPOS_ID); }
| component_pos
| union_pos
;
component_array: ETCL_LBRA ETCL_INTEGER ETCL_RBRA component_ext
{ $$ = new ETCL_COMPONENT_ARRAY_CLASS ($2, $4); }
;
component_assoc: ETCL_LPAREN ETCL_IDENT ETCL_RPAREN component_ext
{ $$ = new ETCL_COMPONENT_ASSOC_CLASS ($2, $4); }
;
component_pos: ETCL_INTEGER component_ext
{ $$ = new ETCL_COMPONENT_POS_CLASS ($1, $2); }
;
union_pos: ETCL_LPAREN union_val ETCL_RPAREN component_ext
{ $$ = new ETCL_UNION_POS_CLASS ($2, $4); }
;
union_val: /* empty */
{ $$ = 0; }
| ETCL_INTEGER
{ $$ = new ETCL_UNION_VALUE_CLASS (+1, $1); }
| ETCL_PLUS ETCL_INTEGER
{ $$ = new ETCL_UNION_VALUE_CLASS (+1, $2); }
| ETCL_MINUS ETCL_INTEGER
{ $$ = new ETCL_UNION_VALUE_CLASS (-1, $2); }
| ETCL_STRING
{ $$ = new ETCL_UNION_VALUE_CLASS ($1); }
;
%%
ACE_END_VERSIONED_NAMESPACE_DECL
|
