/* 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) 1986-2019 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"
-/* 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
- produced by yacc. If other parser generators (bison, byacc, etc) produce
- additional global names that conflict at link time, then those parser
- generators need to be fixed instead of adding those names to this list. */
-
-/* NOTE: This is clumsy, especially since BISON and FLEX provide --prefix
- options. I presume we are maintaining it to accommodate systems
- without BISON? (PNH) */
-
-#define yymaxdepth ada_maxdepth
-#define yyparse _ada_parse /* ada_parse calls this after initialization */
-#define yylex ada_lex
-#define yyerror ada_error
-#define yylval ada_lval
-#define yychar ada_char
-#define yydebug ada_debug
-#define yypact ada_pact
-#define yyr1 ada_r1
-#define yyr2 ada_r2
-#define yydef ada_def
-#define yychk ada_chk
-#define yypgo ada_pgo
-#define yyact ada_act
-#define yyexca ada_exca
-#define yyerrflag ada_errflag
-#define yynerrs ada_nerrs
-#define yyps ada_ps
-#define yypv ada_pv
-#define yys ada_s
-#define yy_yys ada_yys
-#define yystate ada_state
-#define yytmp ada_tmp
-#define yyv ada_v
-#define yy_yyv ada_yyv
-#define yyval ada_val
-#define yylloc ada_lloc
-#define yyreds ada_reds /* With YYDEBUG defined */
-#define yytoks ada_toks /* With YYDEBUG defined */
-#define yyname ada_name /* With YYDEBUG defined */
-#define yyrule ada_rule /* With YYDEBUG defined */
-
-#ifndef YYDEBUG
-#define YYDEBUG 1 /* Default to yydebug support */
-#endif
-
-#define YYFPRINTF parser_fprintf
+#define parse_type(ps) builtin_type (ps->gdbarch ())
+
+/* Remap normal yacc parser interface names (yyparse, yylex, yyerror,
+ etc). */
+#define GDB_YY_REMAP_PREFIX ada_
+#include "yy-remap.h"
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;
static int yylex (void);
-void yyerror (char *);
+static void yyerror (const 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_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
struct type *type;
} typed_val;
struct {
- DOUBLEST dval;
+ gdb_byte val[16];
struct type *type;
} 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
/* Special type cases, put in to allow the parser to distinguish different
legal basetypes. */
-%token <sval> SPECIAL_VARIABLE
+%token <sval> DOLLAR_VARIABLE
%nonassoc ASSIGN
%left _AND_ OR XOR THEN ELSE
%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 : DOLLAR_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_FLOAT);
+ write_exp_elt_type (pstate, $1.type);
+ write_exp_elt_floatcst (pstate, $1.val);
+ write_exp_elt_opcode (pstate, OP_FLOAT);
}
;
-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
+ $$ = lookup_pointer_type ($$);
+ }
+ ;
+
+/* GDB extension */
+block : NAME COLONCOLON
+ { $$ = block_lookup (NULL, $1.ptr); }
+ | block NAME COLONCOLON
+ { $$ = block_lookup ($1, $2.ptr); }
+ ;
-block : BLOCKNAME /* GDB extension */
- { $$ = $1; }
- | block BLOCKNAME /* GDB extension */
- { $$ = $2; }
+aggregate :
+ '(' aggregate_component_list ')'
+ {
+ write_exp_elt_opcode (pstate, OP_AGGREGATE);
+ write_exp_elt_longcst (pstate, $2);
+ write_exp_elt_opcode (pstate, OP_AGGREGATE);
+ }
;
+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
+ { $$ = $1 + $2; }
+ ;
-type : TYPENAME { $$ = $1; }
- | block TYPENAME { $$ = $2; }
- | TYPENAME TICK_ACCESS
- { $$ = lookup_pointer_type ($1); }
- | block TYPENAME TICK_ACCESS
- { $$ = lookup_pointer_type ($2); }
- ;
+positional_list :
+ exp ','
+ { write_exp_elt_opcode (pstate, OP_POSITIONAL);
+ write_exp_elt_longcst (pstate, 0);
+ write_exp_elt_opcode (pstate, OP_POSITIONAL);
+ $$ = 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)
{
+ /* Setting up the parser state. */
+ scoped_restore pstate_restore = make_scoped_restore (&pstate);
+ 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 ();
+ return yyparse ();
}
-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)
+static void
+yyerror (const char *msg)
{
- 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'."), pstate->lexptr);
}
/* Emit expression to access an instance of SYM, in block BLOCK (if
- * non-NULL), and with :: qualification ORIG_LEFT_CONTEXT. */
+ non-NULL). */
+
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 *block,
struct symbol *sym)
{
- if (orig_left_context == NULL && symbol_read_needs_frame (sym))
- {
- if (innermost_block == 0
- || contained_in (block, innermost_block))
- innermost_block = block;
- }
+ if (symbol_read_needs_frame (sym))
+ par_state->block_tracker->update (block, INNERMOST_BLOCK_FOR_SYMBOLS);
- 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 block_symbol 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 = (char *) 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.symbol == NULL)
+ error (_("Could not find renamed variable: %s"), ada_decode (name));
+ else if (SYMBOL_CLASS (sym_info.symbol) == 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.symbol, &inner_renamed_entity,
+ &inner_renamed_entity_len,
+ &inner_renaming_expr))
+ {
+ case ADA_NOT_RENAMING:
+ write_var_from_sym (par_state, sym_info.block, sym_info.symbol);
+ 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 block_symbol index_sym_info;
- end = strchr (suffix, 'X');
+ end = strchr (renaming_expr, 'X');
if (end == NULL)
- end = suffix + strlen (suffix);
+ end = renaming_expr + strlen (renaming_expr);
- 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);
+ = (char *) obstack_copy0 (&temp_parse_space, renaming_expr,
+ end - renaming_expr);
+ renaming_expr = end;
+
+ ada_lookup_encoded_symbol (index_name, orig_left_context,
+ VAR_DOMAIN, &index_sym_info);
+ if (index_sym_info.symbol == NULL)
+ error (_("Could not find %s"), index_name);
+ else if (SYMBOL_CLASS (index_sym_info.symbol) == LOC_TYPEDEF)
+ /* Index is an old-style renaming symbol. */
+ index_sym_info.block = orig_left_context;
+ write_var_from_sym (par_state, index_sym_info.block,
+ index_sym_info.symbol);
}
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 = (char *) 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;
+ std::vector<struct block_symbol> syms;
+ int nsyms;
+ struct symtab *symtab;
+ const struct block *result = NULL;
+
+ 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].symbol) != LOC_BLOCK))
+ symtab = lookup_symtab (name);
+ else
+ symtab = NULL;
+
+ if (symtab != NULL)
+ result = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (symtab), STATIC_BLOCK);
+ else if (nsyms == 0 || SYMBOL_CLASS (syms[0].symbol) != 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);
+ result = SYMBOL_BLOCK_VALUE (syms[0].symbol);
+ }
+
+ return result;
+}
+
+static struct symbol*
+select_possible_type_sym (const std::vector<struct block_symbol> &syms)
+{
+ int i;
+ int preferred_index;
+ struct type *preferred_type;
+
+ preferred_index = -1; preferred_type = NULL;
+ for (i = 0; i < syms.size (); i += 1)
+ switch (SYMBOL_CLASS (syms[i].symbol))
+ {
+ case LOC_TYPEDEF:
+ if (ada_prefer_type (SYMBOL_TYPE (syms[i].symbol), preferred_type))
+ {
+ preferred_index = i;
+ preferred_type = SYMBOL_TYPE (syms[i].symbol);
+ }
+ 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].symbol;
+}
+
+static struct type*
+find_primitive_type (struct parser_state *par_state, char *name)
+{
+ struct type *type;
+ type = language_lookup_primitive_type (par_state->language (),
+ par_state->gdbarch (),
+ 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).symbol;
+ 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 = XOBNEW (&temp_parse_space, struct symbol);
+
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_DOMAIN (sym) = UNDEF_DOMAIN;
+ SYMBOL_LINKAGE_NAME (sym)
+ = (const char *) 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 = (char *) 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 = par_state->expression_context_block;
+
+ encoded_name = ada_encode (name0.ptr);
+ name_len = strlen (encoded_name);
+ encoded_name
+ = (char *) 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;
+ std::vector<struct block_symbol> 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].symbol, syms[0].block);
+
+ if (ren_sym != NULL)
+ syms[0].symbol = ren_sym;
+ }
+
+ type_sym = select_possible_type_sym (syms);
+
+ if (type_sym != NULL)
+ renaming_sym = type_sym;
+ else if (nsyms == 1)
+ renaming_sym = syms[0].symbol;
+ 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:
+ {
+ int alloc_len = renaming_len + name_len - tail_index + 1;
+ char *new_name
+ = (char *) obstack_alloc (&temp_parse_space, alloc_len);
+ 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, syms[0].block, syms[0].symbol);
+ 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 == par_state->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)
+ {
+ std::vector<struct block_symbol> syms;
+ int nsyms = ada_lookup_symbol_list (name.ptr,
+ par_state->expression_context_block,
+ VAR_DOMAIN, &syms);
+
+ if (nsyms != 1 || SYMBOL_CLASS (syms[0].symbol) == LOC_TYPEDEF)
+ write_exp_op_with_string (par_state, OP_NAME, name);
+ else
+ write_var_from_sym (par_state, syms[0].block, syms[0].symbol);
+ }
+ 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_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 (par_state->language (),
+ par_state->gdbarch ());
+}
+
+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 (par_state->language (),
+ par_state->gdbarch (),
+ "system__address");
+ return type != NULL ? type : parse_type (par_state)->builtin_data_ptr;
+}
+
void
_initialize_ada_exp (void)
{
projects / thirdparty / binutils-gdb.git / blobdiff