/* YACC parser for Ada expressions, for GDB.
- Copyright (C) 1986, 1989, 1990, 1991, 1993, 1994, 1997, 2000, 2003,
- 2004 Free Software Foundation, Inc.
+ Copyright (C) 1986-2014 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., 675 Mass Ave, Cambridge, MA 02139, 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 "defs.h"
-#include "gdb_string.h"
#include <ctype.h>
#include "expression.h"
#include "value.h"
#include "frame.h"
#include "block.h"
+#define parse_type(ps) builtin_type (parse_gdbarch (ps))
+
/* 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
without BISON? (PNH) */
#define yymaxdepth ada_maxdepth
-#define yyparse _ada_parse /* ada_parse calls this after initialization */
+/* ada_parse calls this after initialization */
+#define yyparse ada_parse_internal
#define yylex ada_lex
#define yyerror ada_error
#define yylval ada_lval
#define yytoks ada_toks /* With YYDEBUG defined */
#define yyname ada_name /* With YYDEBUG defined */
#define yyrule ada_rule /* With YYDEBUG defined */
+#define yyss ada_yyss
+#define yysslim ada_yysslim
+#define yyssp ada_yyssp
+#define yystacksize ada_yystacksize
+#define yyvs ada_yyvs
+#define yyvsp ada_yyvsp
#ifndef YYDEBUG
#define YYDEBUG 1 /* Default to yydebug support */
struct name_info {
struct symbol *sym;
struct minimal_symbol *msym;
- struct block *block;
+ const struct block *block;
struct stoken stoken;
};
+/* The state of the parser, used internally when we are parsing the
+ expression. */
+
+static struct parser_state *pstate = NULL;
+
+static struct stoken empty_stoken = { "", 0 };
+
/* If expression is in the context of TYPE'(...), then TYPE, else
* NULL. */
static struct type *type_qualifier;
void yyerror (char *);
-static struct stoken string_to_operator (struct stoken);
+static void write_int (struct parser_state *, LONGEST, struct type *);
-static void write_int (LONGEST, struct type *);
+static void write_object_renaming (struct parser_state *,
+ const struct block *, const char *, int,
+ const char *, int);
-static void write_object_renaming (struct block *, struct symbol *, int);
+static struct type* write_var_or_type (struct parser_state *,
+ const struct block *, struct stoken);
-static void write_var_from_name (struct block *, struct name_info);
+static void write_name_assoc (struct parser_state *, struct stoken);
+
+static void write_exp_op_with_string (struct parser_state *, enum exp_opcode,
+ struct stoken);
+
+static const struct block *block_lookup (const struct block *, const char *);
static LONGEST convert_char_literal (struct type *, LONGEST);
+
+static void write_ambiguous_var (struct parser_state *,
+ const struct block *, char *, int);
+
+static struct type *type_int (struct parser_state *);
+
+static struct type *type_long (struct parser_state *);
+
+static struct type *type_long_long (struct parser_state *);
+
+static struct type *type_float (struct parser_state *);
+
+static struct type *type_double (struct parser_state *);
+
+static struct type *type_long_double (struct parser_state *);
+
+static struct type *type_char (struct parser_state *);
+
+static struct type *type_boolean (struct parser_state *);
+
+static struct type *type_system_address (struct parser_state *);
+
%}
%union
} typed_val_float;
struct type *tval;
struct stoken sval;
- struct name_info ssym;
- int voidval;
- struct block *bval;
+ const struct block *bval;
struct internalvar *ivar;
-
}
-%type <voidval> exp exp1 simple_exp start variable
-%type <tval> type
+%type <lval> positional_list component_groups component_associations
+%type <lval> aggregate_component_list
+%type <tval> var_or_type
%token <typed_val> INT NULL_PTR CHARLIT
%token <typed_val_float> FLOAT
-%token <tval> TYPENAME
-%token <bval> BLOCKNAME
-
-/* Both NAME and TYPENAME tokens represent symbols in the input,
- and both convey their data as strings.
- But a TYPENAME is a string that happens to be defined as a typedef
- or builtin type name (such as int or char)
- and a NAME is any other symbol.
- Contexts where this distinction is not important can use the
- nonterminal "name", which matches either NAME or TYPENAME. */
-
-%token <sval> STRING
-%token <ssym> NAME DOT_ID OBJECT_RENAMING
+%token TRUEKEYWORD FALSEKEYWORD
+%token COLONCOLON
+%token <sval> STRING NAME DOT_ID
%type <bval> block
%type <lval> arglist tick_arglist
%left UNARY
%left '*' '/' MOD REM
%right STARSTAR ABS NOT
- /* The following are right-associative only so that reductions at this
- precedence have lower precedence than '.' and '('. The syntax still
- forces a.b.c, e.g., to be LEFT-associated. */
+
+/* Artificial token to give NAME => ... and NAME | priority over reducing
+ NAME to <primary> and to give <primary>' priority over reducing <primary>
+ to <simple_exp>. */
+%nonassoc VAR
+
+%nonassoc ARROW '|'
+
%right TICK_ACCESS TICK_ADDRESS TICK_FIRST TICK_LAST TICK_LENGTH
%right TICK_MAX TICK_MIN TICK_MODULUS
%right TICK_POS TICK_RANGE TICK_SIZE TICK_TAG TICK_VAL
+ /* The following are right-associative only so that reductions at this
+ precedence have lower precedence than '.' and '('. The syntax still
+ forces a.b.c, e.g., to be LEFT-associated. */
%right '.' '(' '[' DOT_ID DOT_ALL
-%token ARROW NEW
+%token NEW OTHERS
\f
%%
start : exp1
- | type { write_exp_elt_opcode (OP_TYPE);
- write_exp_elt_type ($1);
- write_exp_elt_opcode (OP_TYPE); }
;
/* Expressions, including the sequencing operator. */
exp1 : exp
| exp1 ';' exp
- { write_exp_elt_opcode (BINOP_COMMA); }
+ { write_exp_elt_opcode (pstate, BINOP_COMMA); }
+ | primary ASSIGN exp /* Extension for convenience */
+ { write_exp_elt_opcode (pstate, BINOP_ASSIGN); }
;
/* Expressions, not including the sequencing operator. */
-simple_exp : simple_exp DOT_ALL
- { write_exp_elt_opcode (UNOP_IND); }
+primary : primary DOT_ALL
+ { write_exp_elt_opcode (pstate, UNOP_IND); }
;
-simple_exp : simple_exp DOT_ID
- { write_exp_elt_opcode (STRUCTOP_STRUCT);
- write_exp_string ($2.stoken);
- write_exp_elt_opcode (STRUCTOP_STRUCT);
- }
+primary : primary DOT_ID
+ { write_exp_op_with_string (pstate, STRUCTOP_STRUCT,
+ $2); }
;
-simple_exp : simple_exp '(' arglist ')'
+primary : primary '(' arglist ')'
{
- write_exp_elt_opcode (OP_FUNCALL);
- write_exp_elt_longcst ($3);
- write_exp_elt_opcode (OP_FUNCALL);
+ write_exp_elt_opcode (pstate, OP_FUNCALL);
+ write_exp_elt_longcst (pstate, $3);
+ write_exp_elt_opcode (pstate, OP_FUNCALL);
}
- ;
-
-simple_exp : type '(' exp ')'
+ | var_or_type '(' arglist ')'
{
- write_exp_elt_opcode (UNOP_CAST);
- write_exp_elt_type ($1);
- write_exp_elt_opcode (UNOP_CAST);
+ if ($1 != NULL)
+ {
+ if ($3 != 1)
+ error (_("Invalid conversion"));
+ write_exp_elt_opcode (pstate, UNOP_CAST);
+ write_exp_elt_type (pstate, $1);
+ write_exp_elt_opcode (pstate, UNOP_CAST);
+ }
+ else
+ {
+ write_exp_elt_opcode (pstate, OP_FUNCALL);
+ write_exp_elt_longcst (pstate, $3);
+ write_exp_elt_opcode (pstate, OP_FUNCALL);
+ }
}
;
-simple_exp : type '\'' save_qualifier { type_qualifier = $1; } '(' exp ')'
+primary : var_or_type '\'' save_qualifier { type_qualifier = $1; }
+ '(' exp ')'
{
- write_exp_elt_opcode (UNOP_QUAL);
- write_exp_elt_type ($1);
- write_exp_elt_opcode (UNOP_QUAL);
+ if ($1 == NULL)
+ error (_("Type required for qualification"));
+ write_exp_elt_opcode (pstate, UNOP_QUAL);
+ write_exp_elt_type (pstate, $1);
+ write_exp_elt_opcode (pstate, UNOP_QUAL);
type_qualifier = $3;
}
;
save_qualifier : { $$ = type_qualifier; }
;
-simple_exp :
- simple_exp '(' exp DOTDOT exp ')'
- { write_exp_elt_opcode (TERNOP_SLICE); }
+primary :
+ primary '(' simple_exp DOTDOT simple_exp ')'
+ { write_exp_elt_opcode (pstate, TERNOP_SLICE); }
+ | var_or_type '(' simple_exp DOTDOT simple_exp ')'
+ { if ($1 == NULL)
+ write_exp_elt_opcode (pstate, TERNOP_SLICE);
+ else
+ error (_("Cannot slice a type"));
+ }
;
-simple_exp : '(' exp1 ')' { }
+primary : '(' exp1 ')' { }
;
-simple_exp : variable
+/* The following rule causes a conflict with the type conversion
+ var_or_type (exp)
+ To get around it, we give '(' higher priority and add bridge rules for
+ var_or_type (exp, exp, ...)
+ var_or_type (exp .. exp)
+ We also have the action for var_or_type(exp) generate a function call
+ when the first symbol does not denote a type. */
+
+primary : var_or_type %prec VAR
+ { if ($1 != NULL)
+ {
+ write_exp_elt_opcode (pstate, OP_TYPE);
+ write_exp_elt_type (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_TYPE);
+ }
+ }
;
-simple_exp: SPECIAL_VARIABLE /* Various GDB extensions */
- { write_dollar_variable ($1); }
+primary : SPECIAL_VARIABLE /* Various GDB extensions */
+ { write_dollar_variable (pstate, $1); }
;
-exp : simple_exp
- ;
+primary : aggregate
+ ;
-exp : exp ASSIGN exp /* Extension for convenience */
- { write_exp_elt_opcode (BINOP_ASSIGN); }
+simple_exp : primary
;
-exp : '-' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_NEG); }
+simple_exp : '-' simple_exp %prec UNARY
+ { write_exp_elt_opcode (pstate, UNOP_NEG); }
;
-exp : '+' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_PLUS); }
+simple_exp : '+' simple_exp %prec UNARY
+ { write_exp_elt_opcode (pstate, UNOP_PLUS); }
;
-exp : NOT exp %prec UNARY
- { write_exp_elt_opcode (UNOP_LOGICAL_NOT); }
+simple_exp : NOT simple_exp %prec UNARY
+ { write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT); }
;
-exp : ABS exp %prec UNARY
- { write_exp_elt_opcode (UNOP_ABS); }
+simple_exp : ABS simple_exp %prec UNARY
+ { write_exp_elt_opcode (pstate, UNOP_ABS); }
;
arglist : { $$ = 0; }
arglist : exp
{ $$ = 1; }
- | any_name ARROW exp
+ | NAME ARROW exp
{ $$ = 1; }
| arglist ',' exp
{ $$ = $1 + 1; }
- | arglist ',' any_name ARROW exp
+ | arglist ',' NAME ARROW exp
{ $$ = $1 + 1; }
;
-exp : '{' type '}' exp %prec '.'
+primary : '{' var_or_type '}' primary %prec '.'
/* GDB extension */
- { write_exp_elt_opcode (UNOP_MEMVAL);
- write_exp_elt_type ($2);
- write_exp_elt_opcode (UNOP_MEMVAL);
+ {
+ if ($2 == NULL)
+ error (_("Type required within braces in coercion"));
+ write_exp_elt_opcode (pstate, UNOP_MEMVAL);
+ write_exp_elt_type (pstate, $2);
+ write_exp_elt_opcode (pstate, UNOP_MEMVAL);
}
;
/* Binary operators in order of decreasing precedence. */
-exp : exp STARSTAR exp
- { write_exp_elt_opcode (BINOP_EXP); }
+simple_exp : simple_exp STARSTAR simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_EXP); }
;
-exp : exp '*' exp
- { write_exp_elt_opcode (BINOP_MUL); }
+simple_exp : simple_exp '*' simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_MUL); }
;
-exp : exp '/' exp
- { write_exp_elt_opcode (BINOP_DIV); }
+simple_exp : simple_exp '/' simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_DIV); }
;
-exp : exp REM exp /* May need to be fixed to give correct Ada REM */
- { write_exp_elt_opcode (BINOP_REM); }
+simple_exp : simple_exp REM simple_exp /* May need to be fixed to give correct Ada REM */
+ { write_exp_elt_opcode (pstate, BINOP_REM); }
;
-exp : exp MOD exp
- { write_exp_elt_opcode (BINOP_MOD); }
+simple_exp : simple_exp MOD simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_MOD); }
;
-exp : exp '@' exp /* GDB extension */
- { write_exp_elt_opcode (BINOP_REPEAT); }
+simple_exp : simple_exp '@' simple_exp /* GDB extension */
+ { write_exp_elt_opcode (pstate, BINOP_REPEAT); }
;
-exp : exp '+' exp
- { write_exp_elt_opcode (BINOP_ADD); }
+simple_exp : simple_exp '+' simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_ADD); }
;
-exp : exp '&' exp
- { write_exp_elt_opcode (BINOP_CONCAT); }
+simple_exp : simple_exp '&' simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_CONCAT); }
;
-exp : exp '-' exp
- { write_exp_elt_opcode (BINOP_SUB); }
+simple_exp : simple_exp '-' simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_SUB); }
;
-exp : exp '=' exp
- { write_exp_elt_opcode (BINOP_EQUAL); }
+relation : simple_exp
;
-exp : exp NOTEQUAL exp
- { write_exp_elt_opcode (BINOP_NOTEQUAL); }
+relation : simple_exp '=' simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_EQUAL); }
;
-exp : exp LEQ exp
- { write_exp_elt_opcode (BINOP_LEQ); }
+relation : simple_exp NOTEQUAL simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); }
;
-exp : exp IN exp DOTDOT exp
- { write_exp_elt_opcode (TERNOP_IN_RANGE); }
- | exp IN exp TICK_RANGE tick_arglist
- { write_exp_elt_opcode (BINOP_IN_BOUNDS);
- write_exp_elt_longcst ((LONGEST) $5);
- write_exp_elt_opcode (BINOP_IN_BOUNDS);
+relation : simple_exp LEQ simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_LEQ); }
+ ;
+
+relation : simple_exp IN simple_exp DOTDOT simple_exp
+ { write_exp_elt_opcode (pstate, TERNOP_IN_RANGE); }
+ | simple_exp IN primary TICK_RANGE tick_arglist
+ { write_exp_elt_opcode (pstate, BINOP_IN_BOUNDS);
+ write_exp_elt_longcst (pstate, (LONGEST) $5);
+ write_exp_elt_opcode (pstate, BINOP_IN_BOUNDS);
}
- | exp IN TYPENAME %prec TICK_ACCESS
- { write_exp_elt_opcode (UNOP_IN_RANGE);
- write_exp_elt_type ($3);
- write_exp_elt_opcode (UNOP_IN_RANGE);
+ | simple_exp IN var_or_type %prec TICK_ACCESS
+ {
+ if ($3 == NULL)
+ error (_("Right operand of 'in' must be type"));
+ write_exp_elt_opcode (pstate, UNOP_IN_RANGE);
+ write_exp_elt_type (pstate, $3);
+ write_exp_elt_opcode (pstate, UNOP_IN_RANGE);
}
- | exp NOT IN exp DOTDOT exp
- { write_exp_elt_opcode (TERNOP_IN_RANGE);
- write_exp_elt_opcode (UNOP_LOGICAL_NOT);
+ | simple_exp NOT IN simple_exp DOTDOT simple_exp
+ { write_exp_elt_opcode (pstate, TERNOP_IN_RANGE);
+ write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT);
}
- | exp NOT IN exp TICK_RANGE tick_arglist
- { write_exp_elt_opcode (BINOP_IN_BOUNDS);
- write_exp_elt_longcst ((LONGEST) $6);
- write_exp_elt_opcode (BINOP_IN_BOUNDS);
- write_exp_elt_opcode (UNOP_LOGICAL_NOT);
+ | simple_exp NOT IN primary TICK_RANGE tick_arglist
+ { write_exp_elt_opcode (pstate, BINOP_IN_BOUNDS);
+ write_exp_elt_longcst (pstate, (LONGEST) $6);
+ write_exp_elt_opcode (pstate, BINOP_IN_BOUNDS);
+ write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT);
}
- | exp NOT IN TYPENAME %prec TICK_ACCESS
- { write_exp_elt_opcode (UNOP_IN_RANGE);
- write_exp_elt_type ($4);
- write_exp_elt_opcode (UNOP_IN_RANGE);
- write_exp_elt_opcode (UNOP_LOGICAL_NOT);
+ | simple_exp NOT IN var_or_type %prec TICK_ACCESS
+ {
+ if ($4 == NULL)
+ error (_("Right operand of 'in' must be type"));
+ write_exp_elt_opcode (pstate, UNOP_IN_RANGE);
+ write_exp_elt_type (pstate, $4);
+ write_exp_elt_opcode (pstate, UNOP_IN_RANGE);
+ write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT);
}
;
-exp : exp GEQ exp
- { write_exp_elt_opcode (BINOP_GEQ); }
+relation : simple_exp GEQ simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_GEQ); }
;
-exp : exp '<' exp
- { write_exp_elt_opcode (BINOP_LESS); }
+relation : simple_exp '<' simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_LESS); }
;
-exp : exp '>' exp
- { write_exp_elt_opcode (BINOP_GTR); }
+relation : simple_exp '>' simple_exp
+ { write_exp_elt_opcode (pstate, BINOP_GTR); }
;
-exp : exp _AND_ exp /* Fix for Ada elementwise AND. */
- { write_exp_elt_opcode (BINOP_BITWISE_AND); }
- ;
+exp : relation
+ | and_exp
+ | and_then_exp
+ | or_exp
+ | or_else_exp
+ | xor_exp
+ ;
-exp : exp _AND_ THEN exp %prec _AND_
- { write_exp_elt_opcode (BINOP_LOGICAL_AND); }
- ;
+and_exp :
+ relation _AND_ relation
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_AND); }
+ | and_exp _AND_ relation
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_AND); }
+ ;
-exp : exp OR exp /* Fix for Ada elementwise OR */
- { write_exp_elt_opcode (BINOP_BITWISE_IOR); }
+and_then_exp :
+ relation _AND_ THEN relation
+ { write_exp_elt_opcode (pstate, BINOP_LOGICAL_AND); }
+ | and_then_exp _AND_ THEN relation
+ { write_exp_elt_opcode (pstate, BINOP_LOGICAL_AND); }
;
-exp : exp OR ELSE exp
- { write_exp_elt_opcode (BINOP_LOGICAL_OR); }
+or_exp :
+ relation OR relation
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_IOR); }
+ | or_exp OR relation
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_IOR); }
+ ;
+
+or_else_exp :
+ relation OR ELSE relation
+ { write_exp_elt_opcode (pstate, BINOP_LOGICAL_OR); }
+ | or_else_exp OR ELSE relation
+ { write_exp_elt_opcode (pstate, BINOP_LOGICAL_OR); }
;
-exp : exp XOR exp /* Fix for Ada elementwise XOR */
- { write_exp_elt_opcode (BINOP_BITWISE_XOR); }
+xor_exp : relation XOR relation
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_XOR); }
+ | xor_exp XOR relation
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_XOR); }
;
-simple_exp : simple_exp TICK_ACCESS
- { write_exp_elt_opcode (UNOP_ADDR); }
- | simple_exp TICK_ADDRESS
- { write_exp_elt_opcode (UNOP_ADDR);
- write_exp_elt_opcode (UNOP_CAST);
- write_exp_elt_type (builtin_type_ada_system_address);
- write_exp_elt_opcode (UNOP_CAST);
+/* Primaries can denote types (OP_TYPE). In cases such as
+ primary TICK_ADDRESS, where a type would be invalid, it will be
+ caught when evaluate_subexp in ada-lang.c tries to evaluate the
+ primary, expecting a value. Precedence rules resolve the ambiguity
+ in NAME TICK_ACCESS in favor of shifting to form a var_or_type. A
+ construct such as aType'access'access will again cause an error when
+ aType'access evaluates to a type that evaluate_subexp attempts to
+ evaluate. */
+primary : primary TICK_ACCESS
+ { write_exp_elt_opcode (pstate, UNOP_ADDR); }
+ | primary TICK_ADDRESS
+ { write_exp_elt_opcode (pstate, UNOP_ADDR);
+ write_exp_elt_opcode (pstate, UNOP_CAST);
+ write_exp_elt_type (pstate,
+ type_system_address (pstate));
+ write_exp_elt_opcode (pstate, UNOP_CAST);
}
- | simple_exp TICK_FIRST tick_arglist
- { write_int ($3, builtin_type_int);
- write_exp_elt_opcode (OP_ATR_FIRST); }
- | simple_exp TICK_LAST tick_arglist
- { write_int ($3, builtin_type_int);
- write_exp_elt_opcode (OP_ATR_LAST); }
- | simple_exp TICK_LENGTH tick_arglist
- { write_int ($3, builtin_type_int);
- write_exp_elt_opcode (OP_ATR_LENGTH); }
- | simple_exp TICK_SIZE
- { write_exp_elt_opcode (OP_ATR_SIZE); }
- | simple_exp TICK_TAG
- { write_exp_elt_opcode (OP_ATR_TAG); }
+ | primary TICK_FIRST tick_arglist
+ { write_int (pstate, $3, type_int (pstate));
+ write_exp_elt_opcode (pstate, OP_ATR_FIRST); }
+ | primary TICK_LAST tick_arglist
+ { write_int (pstate, $3, type_int (pstate));
+ write_exp_elt_opcode (pstate, OP_ATR_LAST); }
+ | primary TICK_LENGTH tick_arglist
+ { write_int (pstate, $3, type_int (pstate));
+ write_exp_elt_opcode (pstate, OP_ATR_LENGTH); }
+ | primary TICK_SIZE
+ { write_exp_elt_opcode (pstate, OP_ATR_SIZE); }
+ | primary TICK_TAG
+ { write_exp_elt_opcode (pstate, OP_ATR_TAG); }
| opt_type_prefix TICK_MIN '(' exp ',' exp ')'
- { write_exp_elt_opcode (OP_ATR_MIN); }
+ { write_exp_elt_opcode (pstate, OP_ATR_MIN); }
| opt_type_prefix TICK_MAX '(' exp ',' exp ')'
- { write_exp_elt_opcode (OP_ATR_MAX); }
+ { write_exp_elt_opcode (pstate, OP_ATR_MAX); }
| opt_type_prefix TICK_POS '(' exp ')'
- { write_exp_elt_opcode (OP_ATR_POS); }
- | type_prefix TICK_FIRST tick_arglist
- { write_int ($3, builtin_type_int);
- write_exp_elt_opcode (OP_ATR_FIRST); }
- | type_prefix TICK_LAST tick_arglist
- { write_int ($3, builtin_type_int);
- write_exp_elt_opcode (OP_ATR_LAST); }
- | type_prefix TICK_LENGTH tick_arglist
- { write_int ($3, builtin_type_int);
- write_exp_elt_opcode (OP_ATR_LENGTH); }
+ { write_exp_elt_opcode (pstate, OP_ATR_POS); }
| type_prefix TICK_VAL '(' exp ')'
- { write_exp_elt_opcode (OP_ATR_VAL); }
+ { write_exp_elt_opcode (pstate, OP_ATR_VAL); }
| type_prefix TICK_MODULUS
- { write_exp_elt_opcode (OP_ATR_MODULUS); }
+ { write_exp_elt_opcode (pstate, OP_ATR_MODULUS); }
;
tick_arglist : %prec '('
;
type_prefix :
- TYPENAME
- { write_exp_elt_opcode (OP_TYPE);
- write_exp_elt_type ($1);
- write_exp_elt_opcode (OP_TYPE); }
+ var_or_type
+ {
+ if ($1 == NULL)
+ error (_("Prefix must be type"));
+ write_exp_elt_opcode (pstate, OP_TYPE);
+ write_exp_elt_type (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_TYPE); }
;
opt_type_prefix :
type_prefix
| /* EMPTY */
- { write_exp_elt_opcode (OP_TYPE);
- write_exp_elt_type (builtin_type_void);
- write_exp_elt_opcode (OP_TYPE); }
+ { write_exp_elt_opcode (pstate, OP_TYPE);
+ write_exp_elt_type (pstate,
+ parse_type (pstate)->builtin_void);
+ write_exp_elt_opcode (pstate, OP_TYPE); }
;
-exp : INT
- { write_int ((LONGEST) $1.val, $1.type); }
+primary : INT
+ { write_int (pstate, (LONGEST) $1.val, $1.type); }
;
-exp : CHARLIT
- { write_int (convert_char_literal (type_qualifier, $1.val),
+primary : CHARLIT
+ { write_int (pstate,
+ convert_char_literal (type_qualifier, $1.val),
(type_qualifier == NULL)
? $1.type : type_qualifier);
}
;
-exp : FLOAT
- { write_exp_elt_opcode (OP_DOUBLE);
- write_exp_elt_type ($1.type);
- write_exp_elt_dblcst ($1.dval);
- write_exp_elt_opcode (OP_DOUBLE);
+primary : FLOAT
+ { write_exp_elt_opcode (pstate, OP_DOUBLE);
+ write_exp_elt_type (pstate, $1.type);
+ write_exp_elt_dblcst (pstate, $1.dval);
+ write_exp_elt_opcode (pstate, OP_DOUBLE);
}
;
-exp : NULL_PTR
- { write_int (0, builtin_type_int); }
+primary : NULL_PTR
+ { write_int (pstate, 0, type_int (pstate)); }
;
-exp : STRING
+primary : STRING
{
- write_exp_elt_opcode (OP_STRING);
- write_exp_string ($1);
- write_exp_elt_opcode (OP_STRING);
+ write_exp_op_with_string (pstate, OP_STRING, $1);
}
;
-exp : NEW TYPENAME
- { error ("NEW not implemented."); }
+primary : TRUEKEYWORD
+ { write_int (pstate, 1, type_boolean (pstate)); }
+ | FALSEKEYWORD
+ { write_int (pstate, 0, type_boolean (pstate)); }
;
-variable: NAME { write_var_from_name (NULL, $1); }
- | block NAME /* GDB extension */
- { write_var_from_name ($1, $2); }
- | OBJECT_RENAMING
- { write_object_renaming (NULL, $1.sym,
- MAX_RENAMING_CHAIN_LENGTH); }
- | block OBJECT_RENAMING
- { write_object_renaming ($1, $2.sym,
- MAX_RENAMING_CHAIN_LENGTH); }
+primary : NEW NAME
+ { error (_("NEW not implemented.")); }
;
-any_name : NAME { }
- | TYPENAME { }
- | OBJECT_RENAMING { }
- ;
+var_or_type: NAME %prec VAR
+ { $$ = write_var_or_type (pstate, NULL, $1); }
+ | block NAME %prec VAR
+ { $$ = write_var_or_type (pstate, $1, $2); }
+ | NAME TICK_ACCESS
+ {
+ $$ = write_var_or_type (pstate, NULL, $1);
+ if ($$ == NULL)
+ write_exp_elt_opcode (pstate, UNOP_ADDR);
+ else
+ $$ = lookup_pointer_type ($$);
+ }
+ | block NAME TICK_ACCESS
+ {
+ $$ = write_var_or_type (pstate, $1, $2);
+ if ($$ == NULL)
+ write_exp_elt_opcode (pstate, UNOP_ADDR);
+ else
+ $$ = lookup_pointer_type ($$);
+ }
+ ;
-block : BLOCKNAME /* GDB extension */
- { $$ = $1; }
- | block BLOCKNAME /* GDB extension */
- { $$ = $2; }
+/* GDB extension */
+block : NAME COLONCOLON
+ { $$ = block_lookup (NULL, $1.ptr); }
+ | block NAME COLONCOLON
+ { $$ = block_lookup ($1, $2.ptr); }
;
+aggregate :
+ '(' aggregate_component_list ')'
+ {
+ write_exp_elt_opcode (pstate, OP_AGGREGATE);
+ write_exp_elt_longcst (pstate, $2);
+ write_exp_elt_opcode (pstate, OP_AGGREGATE);
+ }
+ ;
-type : TYPENAME { $$ = $1; }
- | block TYPENAME { $$ = $2; }
- | TYPENAME TICK_ACCESS
- { $$ = lookup_pointer_type ($1); }
- | block TYPENAME TICK_ACCESS
- { $$ = lookup_pointer_type ($2); }
- ;
+aggregate_component_list :
+ component_groups { $$ = $1; }
+ | positional_list exp
+ { write_exp_elt_opcode (pstate, OP_POSITIONAL);
+ write_exp_elt_longcst (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_POSITIONAL);
+ $$ = $1 + 1;
+ }
+ | positional_list component_groups
+ { $$ = $1 + $2; }
+ ;
+
+positional_list :
+ exp ','
+ { write_exp_elt_opcode (pstate, OP_POSITIONAL);
+ write_exp_elt_longcst (pstate, 0);
+ write_exp_elt_opcode (pstate, OP_POSITIONAL);
+ $$ = 1;
+ }
+ | positional_list exp ','
+ { write_exp_elt_opcode (pstate, OP_POSITIONAL);
+ write_exp_elt_longcst (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_POSITIONAL);
+ $$ = $1 + 1;
+ }
+ ;
+
+component_groups:
+ others { $$ = 1; }
+ | component_group { $$ = 1; }
+ | component_group ',' component_groups
+ { $$ = $3 + 1; }
+ ;
+
+others : OTHERS ARROW exp
+ { write_exp_elt_opcode (pstate, OP_OTHERS); }
+ ;
+
+component_group :
+ component_associations
+ {
+ write_exp_elt_opcode (pstate, OP_CHOICES);
+ write_exp_elt_longcst (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_CHOICES);
+ }
+ ;
+
+/* We use this somewhat obscure definition in order to handle NAME => and
+ NAME | differently from exp => and exp |. ARROW and '|' have a precedence
+ above that of the reduction of NAME to var_or_type. By delaying
+ decisions until after the => or '|', we convert the ambiguity to a
+ resolved shift/reduce conflict. */
+component_associations :
+ NAME ARROW
+ { write_name_assoc (pstate, $1); }
+ exp { $$ = 1; }
+ | simple_exp ARROW exp
+ { $$ = 1; }
+ | simple_exp DOTDOT simple_exp ARROW
+ { write_exp_elt_opcode (pstate, OP_DISCRETE_RANGE);
+ write_exp_op_with_string (pstate, OP_NAME,
+ empty_stoken);
+ }
+ exp { $$ = 1; }
+ | NAME '|'
+ { write_name_assoc (pstate, $1); }
+ component_associations { $$ = $4 + 1; }
+ | simple_exp '|'
+ component_associations { $$ = $3 + 1; }
+ | simple_exp DOTDOT simple_exp '|'
+ { write_exp_elt_opcode (pstate, OP_DISCRETE_RANGE); }
+ component_associations { $$ = $6 + 1; }
+ ;
/* Some extensions borrowed from C, for the benefit of those who find they
can't get used to Ada notation in GDB. */
-exp : '*' exp %prec '.'
- { write_exp_elt_opcode (UNOP_IND); }
- | '&' exp %prec '.'
- { write_exp_elt_opcode (UNOP_ADDR); }
- | exp '[' exp ']'
- { write_exp_elt_opcode (BINOP_SUBSCRIPT); }
+primary : '*' primary %prec '.'
+ { write_exp_elt_opcode (pstate, UNOP_IND); }
+ | '&' primary %prec '.'
+ { write_exp_elt_opcode (pstate, UNOP_ADDR); }
+ | primary '[' exp ']'
+ { write_exp_elt_opcode (pstate, BINOP_SUBSCRIPT); }
;
%%
#include "ada-lex.c"
int
-ada_parse (void)
+ada_parse (struct parser_state *par_state)
{
+ int result;
+ struct cleanup *c = make_cleanup_clear_parser_state (&pstate);
+
+ /* Setting up the parser state. */
+ gdb_assert (par_state != NULL);
+ pstate = par_state;
+
lexer_init (yyin); /* (Re-)initialize lexer. */
- left_block_context = NULL;
type_qualifier = NULL;
obstack_free (&temp_parse_space, NULL);
obstack_init (&temp_parse_space);
- return _ada_parse ();
+ result = yyparse ();
+ do_cleanups (c);
+ return result;
}
void
yyerror (char *msg)
{
- error ("A %s in expression, near `%s'.", (msg ? msg : "error"), lexptr);
-}
-
-/* The operator name corresponding to operator symbol STRING (adds
- quotes and maps to lower-case). Destroys the previous contents of
- the array pointed to by STRING.ptr. Error if STRING does not match
- a valid Ada operator. Assumes that STRING.ptr points to a
- null-terminated string and that, if STRING is a valid operator
- symbol, the array pointed to by STRING.ptr contains at least
- STRING.length+3 characters. */
-
-static struct stoken
-string_to_operator (struct stoken string)
-{
- int i;
-
- for (i = 0; ada_opname_table[i].encoded != NULL; i += 1)
- {
- if (string.length == strlen (ada_opname_table[i].decoded)-2
- && strncasecmp (string.ptr, ada_opname_table[i].decoded+1,
- string.length) == 0)
- {
- strncpy (string.ptr, ada_opname_table[i].decoded,
- string.length+2);
- string.length += 2;
- return string;
- }
- }
- error ("Invalid operator symbol `%s'", string.ptr);
+ error (_("Error in expression, near `%s'."), lexptr);
}
/* Emit expression to access an instance of SYM, in block BLOCK (if
* non-NULL), and with :: qualification ORIG_LEFT_CONTEXT. */
static void
-write_var_from_sym (struct block *orig_left_context,
- struct block *block,
+write_var_from_sym (struct parser_state *par_state,
+ const struct block *orig_left_context,
+ const struct block *block,
struct symbol *sym)
{
if (orig_left_context == NULL && symbol_read_needs_frame (sym))
{
- if (innermost_block == 0 ||
- contained_in (block, innermost_block))
+ if (innermost_block == 0
+ || contained_in (block, innermost_block))
innermost_block = block;
}
- write_exp_elt_opcode (OP_VAR_VALUE);
- write_exp_elt_block (block);
- write_exp_elt_sym (sym);
- write_exp_elt_opcode (OP_VAR_VALUE);
+ write_exp_elt_opcode (par_state, OP_VAR_VALUE);
+ write_exp_elt_block (par_state, block);
+ write_exp_elt_sym (par_state, sym);
+ write_exp_elt_opcode (par_state, OP_VAR_VALUE);
}
-/* Emit expression to access an instance of NAME in :: context
- * ORIG_LEFT_CONTEXT. If no unique symbol for NAME has been found,
- * output a dummy symbol (good to the next call of ada_parse) for NAME
- * in the UNDEF_DOMAIN, for later resolution by ada_resolve. */
+/* Write integer or boolean constant ARG of type TYPE. */
+
static void
-write_var_from_name (struct block *orig_left_context,
- struct name_info name)
+write_int (struct parser_state *par_state, LONGEST arg, struct type *type)
{
- if (name.msym != NULL)
- {
- write_exp_msymbol (name.msym,
- lookup_function_type (builtin_type_int),
- builtin_type_int);
- }
- else if (name.sym == NULL)
- {
- /* Multiple matches: record name and starting block for later
- resolution by ada_resolve. */
- char *encoded_name = ada_encode (name.stoken.ptr);
- struct symbol *sym =
- obstack_alloc (&temp_parse_space, sizeof (struct symbol));
- memset (sym, 0, sizeof (struct symbol));
- SYMBOL_DOMAIN (sym) = UNDEF_DOMAIN;
- SYMBOL_LINKAGE_NAME (sym)
- = obsavestring (encoded_name, strlen (encoded_name), &temp_parse_space);
- SYMBOL_LANGUAGE (sym) = language_ada;
-
- write_exp_elt_opcode (OP_VAR_VALUE);
- write_exp_elt_block (name.block);
- write_exp_elt_sym (sym);
- write_exp_elt_opcode (OP_VAR_VALUE);
- }
- else
- write_var_from_sym (orig_left_context, name.block, name.sym);
+ write_exp_elt_opcode (par_state, OP_LONG);
+ write_exp_elt_type (par_state, type);
+ write_exp_elt_longcst (par_state, arg);
+ write_exp_elt_opcode (par_state, OP_LONG);
}
-/* Write integer constant ARG of type TYPE. */
-
+/* Write an OPCODE, string, OPCODE sequence to the current expression. */
static void
-write_int (LONGEST arg, struct type *type)
+write_exp_op_with_string (struct parser_state *par_state,
+ enum exp_opcode opcode, struct stoken token)
{
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (type);
- write_exp_elt_longcst (arg);
- write_exp_elt_opcode (OP_LONG);
+ write_exp_elt_opcode (par_state, opcode);
+ write_exp_string (par_state, token);
+ write_exp_elt_opcode (par_state, opcode);
}
+
+/* Emit expression corresponding to the renamed object named
+ * designated by RENAMED_ENTITY[0 .. RENAMED_ENTITY_LEN-1] in the
+ * context of ORIG_LEFT_CONTEXT, to which is applied the operations
+ * encoded by RENAMING_EXPR. MAX_DEPTH is the maximum number of
+ * cascaded renamings to allow. If ORIG_LEFT_CONTEXT is null, it
+ * defaults to the currently selected block. ORIG_SYMBOL is the
+ * symbol that originally encoded the renaming. It is needed only
+ * because its prefix also qualifies any index variables used to index
+ * or slice an array. It should not be necessary once we go to the
+ * new encoding entirely (FIXME pnh 7/20/2007). */
-/* Emit expression corresponding to the renamed object designated by
- * the type RENAMING, which must be the referent of an object renaming
- * type, in the context of ORIG_LEFT_CONTEXT. MAX_DEPTH is the maximum
- * number of cascaded renamings to allow. */
static void
-write_object_renaming (struct block *orig_left_context,
- struct symbol *renaming, int max_depth)
+write_object_renaming (struct parser_state *par_state,
+ const struct block *orig_left_context,
+ const char *renamed_entity, int renamed_entity_len,
+ const char *renaming_expr, int max_depth)
{
- const char *qualification = SYMBOL_LINKAGE_NAME (renaming);
- const char *simple_tail;
- const char *expr = TYPE_FIELD_NAME (SYMBOL_TYPE (renaming), 0);
- const char *suffix;
char *name;
- struct symbol *sym;
enum { SIMPLE_INDEX, LOWER_BOUND, UPPER_BOUND } slice_state;
+ struct ada_symbol_info sym_info;
if (max_depth <= 0)
- error ("Could not find renamed symbol");
+ error (_("Could not find renamed symbol"));
- /* if orig_left_context is null, then use the currently selected
- block; otherwise we might fail our symbol lookup below. */
if (orig_left_context == NULL)
orig_left_context = get_selected_block (NULL);
- for (simple_tail = qualification + strlen (qualification);
- simple_tail != qualification; simple_tail -= 1)
- {
- if (*simple_tail == '.')
- {
- simple_tail += 1;
- break;
- }
- else if (strncmp (simple_tail, "__", 2) == 0)
- {
- simple_tail += 2;
- break;
- }
- }
+ name = obstack_copy0 (&temp_parse_space, renamed_entity, renamed_entity_len);
+ ada_lookup_encoded_symbol (name, orig_left_context, VAR_DOMAIN, &sym_info);
+ if (sym_info.sym == NULL)
+ error (_("Could not find renamed variable: %s"), ada_decode (name));
+ else if (SYMBOL_CLASS (sym_info.sym) == LOC_TYPEDEF)
+ /* We have a renaming of an old-style renaming symbol. Don't
+ trust the block information. */
+ sym_info.block = orig_left_context;
- suffix = strstr (expr, "___XE");
- if (suffix == NULL)
- goto BadEncoding;
-
- name = (char *) obstack_alloc (&temp_parse_space, suffix - expr + 1);
- strncpy (name, expr, suffix-expr);
- name[suffix-expr] = '\000';
- sym = lookup_symbol (name, orig_left_context, VAR_DOMAIN, 0, NULL);
- if (sym == NULL)
- error ("Could not find renamed variable: %s", ada_decode (name));
- if (ada_is_object_renaming (sym))
- write_object_renaming (orig_left_context, sym, max_depth-1);
- else
- write_var_from_sym (orig_left_context, block_found, sym);
+ {
+ const char *inner_renamed_entity;
+ int inner_renamed_entity_len;
+ const char *inner_renaming_expr;
+
+ switch (ada_parse_renaming (sym_info.sym, &inner_renamed_entity,
+ &inner_renamed_entity_len,
+ &inner_renaming_expr))
+ {
+ case ADA_NOT_RENAMING:
+ write_var_from_sym (par_state, orig_left_context, sym_info.block,
+ sym_info.sym);
+ break;
+ case ADA_OBJECT_RENAMING:
+ write_object_renaming (par_state, sym_info.block,
+ inner_renamed_entity, inner_renamed_entity_len,
+ inner_renaming_expr, max_depth - 1);
+ break;
+ default:
+ goto BadEncoding;
+ }
+ }
- suffix += 5;
slice_state = SIMPLE_INDEX;
- while (*suffix == 'X')
+ while (*renaming_expr == 'X')
{
- suffix += 1;
+ renaming_expr += 1;
- switch (*suffix) {
+ switch (*renaming_expr) {
case 'A':
- suffix += 1;
- write_exp_elt_opcode (UNOP_IND);
+ renaming_expr += 1;
+ write_exp_elt_opcode (par_state, UNOP_IND);
break;
case 'L':
slice_state = LOWER_BOUND;
+ /* FALLTHROUGH */
case 'S':
- suffix += 1;
- if (isdigit (*suffix))
+ renaming_expr += 1;
+ if (isdigit (*renaming_expr))
{
char *next;
- long val = strtol (suffix, &next, 10);
- if (next == suffix)
+ long val = strtol (renaming_expr, &next, 10);
+ if (next == renaming_expr)
goto BadEncoding;
- suffix = next;
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type_ada_int);
- write_exp_elt_longcst ((LONGEST) val);
- write_exp_elt_opcode (OP_LONG);
+ renaming_expr = next;
+ write_exp_elt_opcode (par_state, OP_LONG);
+ write_exp_elt_type (par_state, type_int (par_state));
+ write_exp_elt_longcst (par_state, (LONGEST) val);
+ write_exp_elt_opcode (par_state, OP_LONG);
}
else
{
const char *end;
char *index_name;
- int index_len;
- struct symbol *index_sym;
+ struct ada_symbol_info index_sym_info;
- end = strchr (suffix, 'X');
+ end = strchr (renaming_expr, 'X');
if (end == NULL)
- end = suffix + strlen (suffix);
-
- index_len = simple_tail - qualification + 2 + (suffix - end) + 1;
- index_name
- = (char *) obstack_alloc (&temp_parse_space, index_len);
- memset (index_name, '\000', index_len);
- strncpy (index_name, qualification, simple_tail - qualification);
- index_name[simple_tail - qualification] = '\000';
- strncat (index_name, suffix, suffix-end);
- suffix = end;
-
- index_sym =
- lookup_symbol (index_name, NULL, VAR_DOMAIN, 0, NULL);
- if (index_sym == NULL)
- error ("Could not find %s", index_name);
- write_var_from_sym (NULL, block_found, sym);
+ end = renaming_expr + strlen (renaming_expr);
+
+ index_name =
+ obstack_copy0 (&temp_parse_space, renaming_expr,
+ end - renaming_expr);
+ renaming_expr = end;
+
+ ada_lookup_encoded_symbol (index_name, NULL, VAR_DOMAIN,
+ &index_sym_info);
+ if (index_sym_info.sym == NULL)
+ error (_("Could not find %s"), index_name);
+ else if (SYMBOL_CLASS (index_sym_info.sym) == LOC_TYPEDEF)
+ /* Index is an old-style renaming symbol. */
+ index_sym_info.block = orig_left_context;
+ write_var_from_sym (par_state, NULL, index_sym_info.block,
+ index_sym_info.sym);
}
if (slice_state == SIMPLE_INDEX)
{
- write_exp_elt_opcode (OP_FUNCALL);
- write_exp_elt_longcst ((LONGEST) 1);
- write_exp_elt_opcode (OP_FUNCALL);
+ write_exp_elt_opcode (par_state, OP_FUNCALL);
+ write_exp_elt_longcst (par_state, (LONGEST) 1);
+ write_exp_elt_opcode (par_state, OP_FUNCALL);
}
else if (slice_state == LOWER_BOUND)
slice_state = UPPER_BOUND;
else if (slice_state == UPPER_BOUND)
{
- write_exp_elt_opcode (TERNOP_SLICE);
+ write_exp_elt_opcode (par_state, TERNOP_SLICE);
slice_state = SIMPLE_INDEX;
}
break;
{
struct stoken field_name;
const char *end;
- suffix += 1;
+ char *buf;
+
+ renaming_expr += 1;
if (slice_state != SIMPLE_INDEX)
goto BadEncoding;
- end = strchr (suffix, 'X');
+ end = strchr (renaming_expr, 'X');
if (end == NULL)
- end = suffix + strlen (suffix);
- field_name.length = end - suffix;
- field_name.ptr = (char *) malloc (end - suffix + 1);
- strncpy (field_name.ptr, suffix, end - suffix);
- field_name.ptr[end - suffix] = '\000';
- suffix = end;
- write_exp_elt_opcode (STRUCTOP_STRUCT);
- write_exp_string (field_name);
- write_exp_elt_opcode (STRUCTOP_STRUCT);
+ end = renaming_expr + strlen (renaming_expr);
+ field_name.length = end - renaming_expr;
+ buf = malloc (end - renaming_expr + 1);
+ field_name.ptr = buf;
+ strncpy (buf, renaming_expr, end - renaming_expr);
+ buf[end - renaming_expr] = '\000';
+ renaming_expr = end;
+ write_exp_op_with_string (par_state, STRUCTOP_STRUCT, field_name);
break;
}
return;
BadEncoding:
- error ("Internal error in encoding of renaming declaration: %s",
- SYMBOL_LINKAGE_NAME (renaming));
+ error (_("Internal error in encoding of renaming declaration"));
+}
+
+static const struct block*
+block_lookup (const struct block *context, const char *raw_name)
+{
+ const char *name;
+ struct ada_symbol_info *syms;
+ int nsyms;
+ struct symtab *symtab;
+
+ if (raw_name[0] == '\'')
+ {
+ raw_name += 1;
+ name = raw_name;
+ }
+ else
+ 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))
+ symtab = lookup_symtab (name);
+ else
+ symtab = NULL;
+
+ if (symtab != NULL)
+ return BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK);
+ else if (nsyms == 0 || SYMBOL_CLASS (syms[0].sym) != LOC_BLOCK)
+ {
+ if (context == NULL)
+ error (_("No file or function \"%s\"."), raw_name);
+ else
+ error (_("No function \"%s\" in specified context."), raw_name);
+ }
+ else
+ {
+ if (nsyms > 1)
+ warning (_("Function name \"%s\" ambiguous here"), raw_name);
+ return SYMBOL_BLOCK_VALUE (syms[0].sym);
+ }
+}
+
+static struct symbol*
+select_possible_type_sym (struct ada_symbol_info *syms, int nsyms)
+{
+ int i;
+ int preferred_index;
+ struct type *preferred_type;
+
+ preferred_index = -1; preferred_type = NULL;
+ for (i = 0; i < nsyms; i += 1)
+ switch (SYMBOL_CLASS (syms[i].sym))
+ {
+ case LOC_TYPEDEF:
+ if (ada_prefer_type (SYMBOL_TYPE (syms[i].sym), preferred_type))
+ {
+ preferred_index = i;
+ preferred_type = SYMBOL_TYPE (syms[i].sym);
+ }
+ break;
+ case LOC_REGISTER:
+ case LOC_ARG:
+ case LOC_REF_ARG:
+ case LOC_REGPARM_ADDR:
+ case LOC_LOCAL:
+ case LOC_COMPUTED:
+ return NULL;
+ default:
+ break;
+ }
+ if (preferred_type == NULL)
+ return NULL;
+ return syms[preferred_index].sym;
+}
+
+static struct type*
+find_primitive_type (struct parser_state *par_state, char *name)
+{
+ struct type *type;
+ type = language_lookup_primitive_type_by_name (parse_language (par_state),
+ parse_gdbarch (par_state),
+ name);
+ if (type == NULL && strcmp ("system__address", name) == 0)
+ type = type_system_address (par_state);
+
+ if (type != NULL)
+ {
+ /* Check to see if we have a regular definition of this
+ type that just didn't happen to have been read yet. */
+ struct symbol *sym;
+ char *expanded_name =
+ (char *) alloca (strlen (name) + sizeof ("standard__"));
+ strcpy (expanded_name, "standard__");
+ strcat (expanded_name, name);
+ sym = ada_lookup_symbol (expanded_name, NULL, VAR_DOMAIN, NULL);
+ if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
+ type = SYMBOL_TYPE (sym);
+ }
+
+ return type;
+}
+
+static int
+chop_selector (char *name, int end)
+{
+ int i;
+ for (i = end - 1; i > 0; i -= 1)
+ if (name[i] == '.' || (name[i] == '_' && name[i+1] == '_'))
+ return i;
+ 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. */
+static void
+write_selectors (struct parser_state *par_state, char *sels)
+{
+ while (*sels != '\0')
+ {
+ struct stoken field_name;
+ char *p = chop_separator (sels);
+ sels = p;
+ while (*sels != '\0' && *sels != '.'
+ && (sels[0] != '_' || sels[1] != '_'))
+ sels += 1;
+ field_name.length = sels - p;
+ field_name.ptr = p;
+ write_exp_op_with_string (par_state, STRUCTOP_STRUCT, field_name);
+ }
+}
+
+/* Write a variable access (OP_VAR_VALUE) to ambiguous encoded name
+ NAME[0..LEN-1], in block context BLOCK, to be resolved later. Writes
+ a temporary symbol that is valid until the next call to ada_parse.
+ */
+static void
+write_ambiguous_var (struct parser_state *par_state,
+ const struct block *block, char *name, int len)
+{
+ struct symbol *sym =
+ obstack_alloc (&temp_parse_space, sizeof (struct symbol));
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_DOMAIN (sym) = UNDEF_DOMAIN;
+ SYMBOL_LINKAGE_NAME (sym) = obstack_copy0 (&temp_parse_space, name, len);
+ SYMBOL_LANGUAGE (sym) = language_ada;
+
+ write_exp_elt_opcode (par_state, OP_VAR_VALUE);
+ write_exp_elt_block (par_state, block);
+ write_exp_elt_sym (par_state, sym);
+ write_exp_elt_opcode (par_state, 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
+ that type. Otherwise, write expression code to evaluate it as an
+ object and return NULL. In this second case, NAME0 will, in general,
+ have the form <name>(.<selector_name>)*, where <name> is an object
+ or renaming encoded in the debugging data. Calls error if no
+ prefix <name> matches a name in the debugging data (i.e., matches
+ either a complete name or, as a wild-card match, the final
+ identifier). */
+
+static struct type*
+write_var_or_type (struct parser_state *par_state,
+ const struct block *block, struct stoken name0)
+{
+ int depth;
+ char *encoded_name;
+ int name_len;
+
+ if (block == NULL)
+ block = expression_context_block;
+
+ encoded_name = ada_encode (name0.ptr);
+ name_len = strlen (encoded_name);
+ encoded_name = obstack_copy0 (&temp_parse_space, encoded_name, name_len);
+ for (depth = 0; depth < MAX_RENAMING_CHAIN_LENGTH; depth += 1)
+ {
+ int tail_index;
+
+ tail_index = name_len;
+ while (tail_index > 0)
+ {
+ int nsyms;
+ struct ada_symbol_info *syms;
+ struct symbol *type_sym;
+ struct symbol *renaming_sym;
+ const char* renaming;
+ int renaming_len;
+ const char* renaming_expr;
+ int terminator = encoded_name[tail_index];
+
+ encoded_name[tail_index] = '\0';
+ nsyms = ada_lookup_symbol_list (encoded_name, block,
+ VAR_DOMAIN, &syms);
+ encoded_name[tail_index] = terminator;
+
+ /* A single symbol may rename a package or object. */
+
+ /* This should go away when we move entirely to new version.
+ FIXME pnh 7/20/2007. */
+ if (nsyms == 1)
+ {
+ struct symbol *ren_sym =
+ ada_find_renaming_symbol (syms[0].sym, syms[0].block);
+
+ if (ren_sym != NULL)
+ syms[0].sym = ren_sym;
+ }
+
+ type_sym = select_possible_type_sym (syms, nsyms);
+
+ if (type_sym != NULL)
+ renaming_sym = type_sym;
+ else if (nsyms == 1)
+ renaming_sym = syms[0].sym;
+ else
+ renaming_sym = NULL;
+
+ switch (ada_parse_renaming (renaming_sym, &renaming,
+ &renaming_len, &renaming_expr))
+ {
+ case ADA_NOT_RENAMING:
+ break;
+ case ADA_PACKAGE_RENAMING:
+ case ADA_EXCEPTION_RENAMING:
+ case ADA_SUBPROGRAM_RENAMING:
+ {
+ char *new_name
+ = obstack_alloc (&temp_parse_space,
+ renaming_len + name_len - tail_index + 1);
+ strncpy (new_name, renaming, renaming_len);
+ strcpy (new_name + renaming_len, encoded_name + tail_index);
+ encoded_name = new_name;
+ name_len = renaming_len + name_len - tail_index;
+ goto TryAfterRenaming;
+ }
+ case ADA_OBJECT_RENAMING:
+ write_object_renaming (par_state, block, renaming, renaming_len,
+ renaming_expr, MAX_RENAMING_CHAIN_LENGTH);
+ write_selectors (par_state, encoded_name + tail_index);
+ return NULL;
+ default:
+ internal_error (__FILE__, __LINE__,
+ _("impossible value from ada_parse_renaming"));
+ }
+
+ if (type_sym != NULL)
+ {
+ 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);
+ }
+ else if (tail_index == name_len && nsyms == 0)
+ {
+ struct type *type = find_primitive_type (par_state,
+ encoded_name);
+
+ if (type != NULL)
+ return type;
+ }
+
+ if (nsyms == 1)
+ {
+ write_var_from_sym (par_state, block, syms[0].block,
+ syms[0].sym);
+ write_selectors (par_state, encoded_name + tail_index);
+ return NULL;
+ }
+ else if (nsyms == 0)
+ {
+ struct bound_minimal_symbol msym
+ = ada_lookup_simple_minsym (encoded_name);
+ if (msym.minsym != NULL)
+ {
+ write_exp_msymbol (par_state, msym);
+ /* Maybe cause error here rather than later? FIXME? */
+ write_selectors (par_state, encoded_name + tail_index);
+ return NULL;
+ }
+
+ if (tail_index == name_len
+ && strncmp (encoded_name, "standard__",
+ sizeof ("standard__") - 1) == 0)
+ error (_("No definition of \"%s\" found."), name0.ptr);
+
+ tail_index = chop_selector (encoded_name, tail_index);
+ }
+ else
+ {
+ write_ambiguous_var (par_state, block, encoded_name,
+ tail_index);
+ write_selectors (par_state, encoded_name + tail_index);
+ return NULL;
+ }
+ }
+
+ if (!have_full_symbols () && !have_partial_symbols () && block == NULL)
+ error (_("No symbol table is loaded. Use the \"file\" command."));
+ if (block == expression_context_block)
+ error (_("No definition of \"%s\" in current context."), name0.ptr);
+ else
+ error (_("No definition of \"%s\" in specified context."), name0.ptr);
+
+ TryAfterRenaming: ;
+ }
+
+ error (_("Could not find renamed symbol \"%s\""), name0.ptr);
+
+}
+
+/* Write a left side of a component association (e.g., NAME in NAME =>
+ exp). If NAME has the form of a selected component, write it as an
+ ordinary expression. If it is a simple variable that unambiguously
+ corresponds to exactly one symbol that does not denote a type or an
+ object renaming, also write it normally as an OP_VAR_VALUE.
+ Otherwise, write it as an OP_NAME.
+
+ Unfortunately, we don't know at this point whether NAME is supposed
+ to denote a record component name or the value of an array index.
+ Therefore, it is not appropriate to disambiguate an ambiguous name
+ as we normally would, nor to replace a renaming with its referent.
+ As a result, in the (one hopes) rare case that one writes an
+ aggregate such as (R => 42) where R renames an object or is an
+ ambiguous name, one must write instead ((R) => 42). */
+
+static void
+write_name_assoc (struct parser_state *par_state, struct stoken name)
+{
+ if (strchr (name.ptr, '.') == NULL)
+ {
+ struct ada_symbol_info *syms;
+ int nsyms = ada_lookup_symbol_list (name.ptr, expression_context_block,
+ VAR_DOMAIN, &syms);
+ if (nsyms != 1 || SYMBOL_CLASS (syms[0].sym) == LOC_TYPEDEF)
+ write_exp_op_with_string (par_state, OP_NAME, name);
+ else
+ write_var_from_sym (par_state, NULL, syms[0].block, syms[0].sym);
+ }
+ else
+ if (write_var_or_type (par_state, NULL, name) != NULL)
+ error (_("Invalid use of type."));
}
/* Convert the character literal whose ASCII value would be VAL to the
appropriate value of type TYPE, if there is a translation.
Otherwise return VAL. Hence, in an enumeration type ('A', 'B'),
the literal 'A' (VAL == 65), returns 0. */
+
static LONGEST
convert_char_literal (struct type *type, LONGEST val)
{
char name[7];
int f;
- if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM)
+ if (type == NULL)
+ return val;
+ type = check_typedef (type);
+ if (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)
- return TYPE_FIELD_BITPOS (type, f);
+ return TYPE_FIELD_ENUMVAL (type, f);
}
return val;
}
+static struct type *
+type_int (struct parser_state *par_state)
+{
+ return parse_type (par_state)->builtin_int;
+}
+
+static struct type *
+type_long (struct parser_state *par_state)
+{
+ return parse_type (par_state)->builtin_long;
+}
+
+static struct type *
+type_long_long (struct parser_state *par_state)
+{
+ return parse_type (par_state)->builtin_long_long;
+}
+
+static struct type *
+type_float (struct parser_state *par_state)
+{
+ return parse_type (par_state)->builtin_float;
+}
+
+static struct type *
+type_double (struct parser_state *par_state)
+{
+ return parse_type (par_state)->builtin_double;
+}
+
+static struct type *
+type_long_double (struct parser_state *par_state)
+{
+ return parse_type (par_state)->builtin_long_double;
+}
+
+static struct type *
+type_char (struct parser_state *par_state)
+{
+ return language_string_char_type (parse_language (par_state),
+ parse_gdbarch (par_state));
+}
+
+static struct type *
+type_boolean (struct parser_state *par_state)
+{
+ return parse_type (par_state)->builtin_bool;
+}
+
+static struct type *
+type_system_address (struct parser_state *par_state)
+{
+ struct type *type
+ = language_lookup_primitive_type_by_name (parse_language (par_state),
+ parse_gdbarch (par_state),
+ "system__address");
+ return type != NULL ? type : parse_type (par_state)->builtin_data_ptr;
+}
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_ada_exp;
+
void
_initialize_ada_exp (void)
{
projects / platform / upstream / binutils.git / blobdiff