/* YACC parser for Ada expressions, for GDB.
Copyright (C) 1986, 1989, 1990, 1991, 1993, 1994, 1997, 2000, 2003, 2004,
- 2007 Free Software Foundation, Inc.
+ 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Parse an Ada expression from text in a string,
and return the result as a struct expression pointer.
#include "frame.h"
#include "block.h"
+#define parse_type builtin_type (parse_gdbarch)
+
/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
as well as gratuitiously global symbol names, so we can have multiple
yacc generated parsers in gdb. These are only the variables
static struct type *type_char (void);
+static struct type *type_boolean (void);
+
static struct type *type_system_address (void);
%}
%token <typed_val> INT NULL_PTR CHARLIT
%token <typed_val_float> FLOAT
+%token TRUEKEYWORD FALSEKEYWORD
%token COLONCOLON
%token <sval> STRING NAME DOT_ID
%type <bval> block
{ $$ = $1 + 1; }
;
-simple_exp : '{' var_or_type '}' simple_exp %prec '.'
+primary : '{' var_or_type '}' primary %prec '.'
/* GDB extension */
{
if ($2 == NULL)
type_prefix
| /* EMPTY */
{ write_exp_elt_opcode (OP_TYPE);
- write_exp_elt_type (builtin_type_void);
+ write_exp_elt_type (parse_type->builtin_void);
write_exp_elt_opcode (OP_TYPE); }
;
}
;
+primary : TRUEKEYWORD
+ { write_int (1, type_boolean ()); }
+ | FALSEKEYWORD
+ { write_int (0, type_boolean ()); }
+ ;
+
primary : NEW NAME
{ error (_("NEW not implemented.")); }
;
write_exp_elt_opcode (OP_VAR_VALUE);
}
-/* Write integer constant ARG of type TYPE. */
+/* Write integer or boolean constant ARG of type TYPE. */
static void
write_int (LONGEST arg, struct type *type)
name = obsavestring (renamed_entity, renamed_entity_len, &temp_parse_space);
sym = ada_lookup_encoded_symbol (name, orig_left_context, VAR_DOMAIN,
- &block, NULL);
+ &block);
if (sym == NULL)
error (_("Could not find renamed variable: %s"), ada_decode (name));
else if (SYMBOL_CLASS (sym) == LOC_TYPEDEF)
renaming_expr = end;
index_sym = ada_lookup_encoded_symbol (index_name, NULL,
- VAR_DOMAIN, &block,
- NULL);
+ VAR_DOMAIN, &block);
if (index_sym == NULL)
error (_("Could not find %s"), index_name);
else if (SYMBOL_CLASS (index_sym) == LOC_TYPEDEF)
if (end == NULL)
end = renaming_expr + strlen (renaming_expr);
field_name.length = end - renaming_expr;
- field_name.ptr = xmalloc (end - renaming_expr + 1);
+ field_name.ptr = malloc (end - renaming_expr + 1);
strncpy (field_name.ptr, renaming_expr, end - renaming_expr);
field_name.ptr[end - renaming_expr] = '\000';
renaming_expr = end;
name = ada_encode (raw_name);
nsyms = ada_lookup_symbol_list (name, context, VAR_DOMAIN, &syms);
- if (context == NULL &&
- (nsyms == 0 || SYMBOL_CLASS (syms[0].sym) != LOC_BLOCK))
+ if (context == NULL
+ && (nsyms == 0 || SYMBOL_CLASS (syms[0].sym) != LOC_BLOCK))
symtab = lookup_symtab (name);
else
symtab = NULL;
case LOC_REGISTER:
case LOC_ARG:
case LOC_REF_ARG:
- case LOC_REGPARM:
case LOC_REGPARM_ADDR:
case LOC_LOCAL:
- case LOC_LOCAL_ARG:
- case LOC_BASEREG:
- case LOC_BASEREG_ARG:
case LOC_COMPUTED:
- case LOC_COMPUTED_ARG:
return NULL;
default:
break;
find_primitive_type (char *name)
{
struct type *type;
- type = language_lookup_primitive_type_by_name (current_language,
- current_gdbarch,
+ type = language_lookup_primitive_type_by_name (parse_language,
+ parse_gdbarch,
name);
if (type == NULL && strcmp ("system__address", name) == 0)
type = type_system_address ();
(char *) alloca (strlen (name) + sizeof ("standard__"));
strcpy (expanded_name, "standard__");
strcat (expanded_name, name);
- sym = ada_lookup_symbol (expanded_name, NULL, VAR_DOMAIN, NULL, NULL);
+ sym = ada_lookup_symbol (expanded_name, NULL, VAR_DOMAIN, NULL);
if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
type = SYMBOL_TYPE (sym);
}
return -1;
}
+/* If NAME is a string beginning with a separator (either '__', or
+ '.'), chop this separator and return the result; else, return
+ NAME. */
+
+static char *
+chop_separator (char *name)
+{
+ if (*name == '.')
+ return name + 1;
+
+ if (name[0] == '_' && name[1] == '_')
+ return name + 2;
+
+ return name;
+}
+
/* Given that SELS is a string of the form (<sep><identifier>)*, where
<sep> is '__' or '.', write the indicated sequence of
STRUCTOP_STRUCT expression operators. */
while (*sels != '\0')
{
struct stoken field_name;
- char *p;
- while (*sels == '_' || *sels == '.')
- sels += 1;
- p = sels;
+ char *p = chop_separator (sels);
+ sels = p;
while (*sels != '\0' && *sels != '.'
&& (sels[0] != '_' || sels[1] != '_'))
sels += 1;
write_exp_elt_opcode (OP_VAR_VALUE);
}
+/* A convenient wrapper around ada_get_field_index that takes
+ a non NUL-terminated FIELD_NAME0 and a FIELD_NAME_LEN instead
+ of a NUL-terminated field name. */
+
+static int
+ada_nget_field_index (const struct type *type, const char *field_name0,
+ int field_name_len, int maybe_missing)
+{
+ char *field_name = alloca ((field_name_len + 1) * sizeof (char));
+
+ strncpy (field_name, field_name0, field_name_len);
+ field_name[field_name_len] = '\0';
+ return ada_get_field_index (type, field_name, maybe_missing);
+}
+
+/* If encoded_field_name is the name of a field inside symbol SYM,
+ then return the type of that field. Otherwise, return NULL.
+
+ This function is actually recursive, so if ENCODED_FIELD_NAME
+ doesn't match one of the fields of our symbol, then try to see
+ if ENCODED_FIELD_NAME could not be a succession of field names
+ (in other words, the user entered an expression of the form
+ TYPE_NAME.FIELD1.FIELD2.FIELD3), in which case we evaluate
+ each field name sequentially to obtain the desired field type.
+ In case of failure, we return NULL. */
+
+static struct type *
+get_symbol_field_type (struct symbol *sym, char *encoded_field_name)
+{
+ char *field_name = encoded_field_name;
+ char *subfield_name;
+ struct type *type = SYMBOL_TYPE (sym);
+ int fieldno;
+
+ if (type == NULL || field_name == NULL)
+ return NULL;
+ type = check_typedef (type);
+
+ while (field_name[0] != '\0')
+ {
+ field_name = chop_separator (field_name);
+
+ fieldno = ada_get_field_index (type, field_name, 1);
+ if (fieldno >= 0)
+ return TYPE_FIELD_TYPE (type, fieldno);
+
+ subfield_name = field_name;
+ while (*subfield_name != '\0' && *subfield_name != '.'
+ && (subfield_name[0] != '_' || subfield_name[1] != '_'))
+ subfield_name += 1;
+
+ if (subfield_name[0] == '\0')
+ return NULL;
+
+ fieldno = ada_nget_field_index (type, field_name,
+ subfield_name - field_name, 1);
+ if (fieldno < 0)
+ return NULL;
+
+ type = TYPE_FIELD_TYPE (type, fieldno);
+ field_name = subfield_name;
+ }
+
+ return NULL;
+}
/* Look up NAME0 (an unencoded identifier or dotted name) in BLOCK (or
expression_block_context if NULL). If it denotes a type, return
if (type_sym != NULL)
{
- struct type *type = SYMBOL_TYPE (type_sym);
-
- if (TYPE_CODE (type) == TYPE_CODE_VOID)
- error (_("`%s' matches only void type name(s)"), name0.ptr);
- else if (tail_index == name_len)
- return type;
+ struct type *field_type;
+
+ if (tail_index == name_len)
+ return SYMBOL_TYPE (type_sym);
+
+ /* We have some extraneous characters after the type name.
+ If this is an expression "TYPE_NAME.FIELD0.[...].FIELDN",
+ then try to get the type of FIELDN. */
+ field_type
+ = get_symbol_field_type (type_sym, encoded_name + tail_index);
+ if (field_type != NULL)
+ return field_type;
else
- error (_("Invalid attempt to select from type: \"%s\"."), name0.ptr);
+ error (_("Invalid attempt to select from type: \"%s\"."),
+ name0.ptr);
}
else if (tail_index == name_len && nsyms == 0)
{
= ada_lookup_simple_minsym (encoded_name);
if (msym != NULL)
{
- write_exp_msymbol (msym, lookup_function_type (type_int ()),
- type_int ());
+ write_exp_msymbol (msym);
/* Maybe cause error here rather than later? FIXME? */
write_selectors (encoded_name + tail_index);
return NULL;
if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM)
return val;
- sprintf (name, "QU%02x", (int) val);
+ xsnprintf (name, sizeof (name), "QU%02x", (int) val);
for (f = 0; f < TYPE_NFIELDS (type); f += 1)
{
if (strcmp (name, TYPE_FIELD_NAME (type, f)) == 0)
static struct type *
type_int (void)
{
- return builtin_type (current_gdbarch)->builtin_int;
+ return parse_type->builtin_int;
}
static struct type *
type_long (void)
{
- return builtin_type (current_gdbarch)->builtin_long;
+ return parse_type->builtin_long;
}
static struct type *
type_long_long (void)
{
- return builtin_type (current_gdbarch)->builtin_long_long;
+ return parse_type->builtin_long_long;
}
static struct type *
type_float (void)
{
- return builtin_type (current_gdbarch)->builtin_float;
+ return parse_type->builtin_float;
}
static struct type *
type_double (void)
{
- return builtin_type (current_gdbarch)->builtin_double;
+ return parse_type->builtin_double;
}
static struct type *
type_long_double (void)
{
- return builtin_type (current_gdbarch)->builtin_long_double;
+ return parse_type->builtin_long_double;
}
static struct type *
type_char (void)
{
- return language_string_char_type (current_language, current_gdbarch);
+ return language_string_char_type (parse_language, parse_gdbarch);
+}
+
+static struct type *
+type_boolean (void)
+{
+ return parse_type->builtin_bool;
}
static struct type *
type_system_address (void)
{
struct type *type
- = language_lookup_primitive_type_by_name (current_language,
- current_gdbarch,
+ = language_lookup_primitive_type_by_name (parse_language,
+ parse_gdbarch,
"system__address");
- return type != NULL ? type : lookup_pointer_type (builtin_type_void);
+ return type != NULL ? type : parse_type->builtin_data_ptr;
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_ada_exp;
+
void
_initialize_ada_exp (void)
{
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