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binutils-gdb/gdb/ada-lang.h
Sergio Durigan Junior 410a0ff2df Remove `expout*' globals from parser-defs.h 
This commit removes the "expout*" globals from our parser code, turning
them into a structure that is passed when an expression needs to be
evaluated.  This is the initial step to make our parser less
"globalized".

This is mostly a mechanical patch, which creates a structure containing
the "expout*" globals and then modify all the functions that handle them
in order to take the structure as argument.  It is big, and has been
reviewed at least 4 times, so I think everything is covered.

Below you can see the message links from the discussions:

- First attempt:

<https://sourceware.org/ml/gdb-patches/2012-01/msg00522.html>
Message-ID: <m3k44s7qej.fsf@gmail.com>

- Second attempt:

<https://sourceware.org/ml/gdb-patches/2012-06/msg00054.html>
Message-Id: <1338665528-5932-1-git-send-email-sergiodj@redhat.com>

- Third attempt:

<https://sourceware.org/ml/gdb-patches/2014-01/msg00949.html>
Message-Id: <1390629467-27139-1-git-send-email-sergiodj@redhat.com>

- Fourth (last) attempt:

<https://sourceware.org/ml/gdb-patches/2014-03/msg00546.html>
Message-Id: <1395463432-29750-1-git-send-email-sergiodj@redhat.com>

gdb/
2014-03-27  Sergio Durigan Junior  <sergiodj@redhat.com>

	Remove some globals from our parser.
	* language.c (unk_lang_parser): Add "struct parser_state"
	argument.
	* language.h (struct language_defn) <la_parser>: Likewise.
	* parse.c (expout, expout_size, expout_ptr): Remove variables.
	(initialize_expout): Add "struct parser_state" argument.
	Rewrite function to use the parser state.
	(reallocate_expout, write_exp_elt, write_exp_elt_opcode,
	write_exp_elt_sym, write_exp_elt_block, write_exp_elt_objfile,
	write_exp_elt_longcst, write_exp_elt_dblcst,
	write_exp_elt_decfloatcst, write_exp_elt_type,
	write_exp_elt_intern, write_exp_string, write_exp_string_vector,
	write_exp_bitstring, write_exp_msymbol, mark_struct_expression,
	write_dollar_variable): Likewise.
	(parse_exp_in_context_1): Use parser state.
	(insert_type_address_space): Add "struct parser_state" argument.
	Use parser state.
	(increase_expout_size): New function.
	* parser-defs.h: Forward declare "struct language_defn" and
	"struct parser_state".
	(expout, expout_size, expout_ptr): Remove extern declarations.
	(parse_gdbarch, parse_language): Rewrite macro declarations to
	accept the parser state.
	(struct parser_state): New struct.
	(initialize_expout, reallocate_expout, write_exp_elt_opcode,
	write_exp_elt_sym, write_exp_elt_longcst, write_exp_elt_dblcst,
	write_exp_elt_decfloatcst, write_exp_elt_type,
	write_exp_elt_intern, write_exp_string, write_exp_string_vector,
	write_exp_bitstring, write_exp_elt_block, write_exp_elt_objfile,
	write_exp_msymbol, write_dollar_variable,
	mark_struct_expression, insert_type_address_space): Add "struct
	parser_state" argument.
	(increase_expout_size): New function.
	* utils.c (do_clear_parser_state): New function.
	(make_cleanup_clear_parser_state): Likewise.
	* utils.h (make_cleanup_clear_parser_state): New function
	prototype.
	* aarch64-linux-tdep.c (aarch64_stap_parse_special_token):
	Update calls to write_exp* in order to pass the parser state.
	* arm-linux-tdep.c (arm_stap_parse_special_token): Likewise.
	* i386-tdep.c (i386_stap_parse_special_token_triplet): Likewise.
	(i386_stap_parse_special_token_three_arg_disp): Likewise.
	* ppc-linux-tdep.c (ppc_stap_parse_special_token): Likewise.
	* stap-probe.c (stap_parse_register_operand): Likewise.
	(stap_parse_single_operand): Likewise.
	(stap_parse_argument_1): Likewise.
	(stap_parse_argument): Use parser state.
	* stap-probe.h: Include "parser-defs.h".
	(struct stap_parse_info) <pstate>: New field.
	* c-exp.y (parse_type): Rewrite to use parser state.
	(yyparse): Redefine to c_parse_internal.
	(pstate): New global variable.
	(parse_number): Add "struct parser_state" argument.
	(write_destructor_name): Likewise.
	(type_exp): Update calls to write_exp* and similars in order to
	use parser state.
	(exp1, exp, variable, qualified_name, space_identifier,
	typename, typebase): Likewise.
	(write_destructor_name, parse_number, lex_one_token,
	classify_name, classify_inner_name, c_parse): Add "struct
	parser_state" argument.  Update function to use parser state.
	* c-lang.h: Forward declare "struct parser_state".
	(c_parse): Add "struct parser_state" argument.
	* ada-exp.y (parse_type): Rewrite macro to use parser state.
	(yyparse): Redefine macro to ada_parse_internal.
	(pstate): New variable.
	(write_int, write_object_renaming, write_var_or_type,
	write_name_assoc, write_exp_op_with_string, write_ambiguous_var,
	type_int, type_long, type_long_long, type_float, type_double,
	type_long_double, type_char, type_boolean, type_system_address):
	Add "struct parser_state" argument.
	(exp1, primary, simple_exp, relation, and_exp, and_then_exp,
	or_exp, or_else_exp, xor_exp, type_prefix, opt_type_prefix,
	var_or_type, aggregate, aggregate_component_list,
	positional_list, others, component_group,
	component_associations): Update calls to write_exp* and similar
	functions in order to use parser state.
	(ada_parse, write_var_from_sym, write_int,
	write_exp_op_with_string, write_object_renaming,
	find_primitive_type, write_selectors, write_ambiguous_var,
	write_var_or_type, write_name_assoc, type_int, type_long,
	type_long_long, type_float, type_double, type_long_double,
	type_char, type_boolean, type_system_address): Add "struct
	parser_state" argument.  Adjust function to use parser state.
	* ada-lang.c (parse): Likewise.
	* ada-lang.h: Forward declare "struct parser_state".
	(ada_parse): Add "struct parser_state" argument.
	* ada-lex.l (processInt, processReal): Likewise.  Adjust all
	calls to both functions.
	* f-exp.y (parse_type, parse_f_type): Rewrite macros to use
	parser state.
	(yyparse): Redefine macro to f_parse_internal.
	(pstate): New variable.
	(parse_number): Add "struct parser_state" argument.
	(type_exp, exp, subrange, typebase): Update calls to write_exp*
	and similars in order to use parser state.
	(parse_number): Adjust code to use parser state.
	(yylex): Likewise.
	(f_parse): New function.
	* f-lang.h: Forward declare "struct parser_state".
	(f_parse): Add "struct parser_state" argument.
	* jv-exp.y (parse_type, parse_java_type): Rewrite macros to use
	parser state.
	(yyparse): Redefine macro for java_parse_internal.
	(pstate): New variable.
	(push_expression_name, push_expression_name, insert_exp): Add
	"struct parser_state" argument.
	(type_exp, StringLiteral, Literal, PrimitiveType, IntegralType,
	FloatingPointType, exp1, PrimaryNoNewArray, FieldAccess,
	FuncStart, MethodInvocation, ArrayAccess, PostfixExpression,
	PostIncrementExpression, PostDecrementExpression,
	UnaryExpression, PreIncrementExpression, PreDecrementExpression,
	UnaryExpressionNotPlusMinus, CastExpression,
	MultiplicativeExpression, AdditiveExpression, ShiftExpression,
	RelationalExpression, EqualityExpression, AndExpression,
	ExclusiveOrExpression, InclusiveOrExpression,
	ConditionalAndExpression, ConditionalOrExpression,
	ConditionalExpression, Assignment, LeftHandSide): Update
	calls to write_exp* and similars in order to use parser state.
	(parse_number): Ajust code to use parser state.
	(yylex): Likewise.
	(java_parse): New function.
	(push_variable): Add "struct parser_state" argument.  Adjust
	code to user parser state.
	(push_fieldnames, push_qualified_expression_name,
	push_expression_name, insert_exp): Likewise.
	* jv-lang.h: Forward declare "struct parser_state".
	(java_parse): Add "struct parser_state" argument.
	* m2-exp.y (parse_type, parse_m2_type): Rewrite macros to use
	parser state.
	(yyparse): Redefine macro to m2_parse_internal.
	(pstate): New variable.
	(type_exp, exp, fblock, variable, type): Update calls to
	write_exp* and similars to use parser state.
	(yylex): Likewise.
	(m2_parse): New function.
	* m2-lang.h: Forward declare "struct parser_state".
	(m2_parse): Add "struct parser_state" argument.
	* objc-lang.c (end_msglist): Add "struct parser_state" argument.
	* objc-lang.h: Forward declare "struct parser_state".
	(end_msglist): Add "struct parser_state" argument.
	* p-exp.y (parse_type): Rewrite macro to use parser state.
	(yyparse): Redefine macro to pascal_parse_internal.
	(pstate): New variable.
	(parse_number): Add "struct parser_state" argument.
	(type_exp, exp1, exp, qualified_name, variable): Update calls to
	write_exp* and similars in order to use parser state.
	(parse_number, yylex): Adjust code to use parser state.
	(pascal_parse): New function.
	* p-lang.h: Forward declare "struct parser_state".
	(pascal_parse): Add "struct parser_state" argument.
	* go-exp.y (parse_type): Rewrite macro to use parser state.
	(yyparse): Redefine macro to go_parse_internal.
	(pstate): New variable.
	(parse_number): Add "struct parser_state" argument.
	(type_exp, exp1, exp, variable, type): Update calls to
	write_exp* and similars in order to use parser state.
	(parse_number, lex_one_token, classify_name, yylex): Adjust code
	to use parser state.
	(go_parse): Likewise.
	* go-lang.h: Forward declare "struct parser_state".
	(go_parse): Add "struct parser_state" argument.
2014-03-27 19:10:40 -03:00

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/* Ada language support definitions for GDB, the GNU debugger.
Copyright (C) 1992-2014 Free Software Foundation, Inc.
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 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (ADA_LANG_H)
#define ADA_LANG_H 1
struct frame_info;
struct inferior;
struct type_print_options;
struct parser_state;
#include "value.h"
#include "gdbtypes.h"
#include "breakpoint.h"
#include "vec.h"
/* Names of specific files known to be part of the runtime
system and that might consider (confusing) debugging information.
Each name (a basic regular expression string) is followed by a
comma. FIXME: Should be part of a configuration file. */
#if defined(__alpha__) && defined(__osf__)
#define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
"^[agis]-.*\\.ad[bs]$", \
"/usr/shlib/libpthread\\.so",
#elif defined (__linux__)
#define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
"^[agis]-.*\\.ad[bs]$", \
"/lib.*/libpthread\\.so[.0-9]*$", "/lib.*/libpthread\\.a$", \
"/lib.*/libc\\.so[.0-9]*$", "/lib.*/libc\\.a$",
#endif
#if !defined (ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS)
#define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
"^unwind-seh.c$", \
"^[agis]-.*\\.ad[bs]$",
#endif
/* Names of compiler-generated auxiliary functions probably of no
interest to users. Each name (a basic regular expression string)
is followed by a comma. */
#define ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS \
"___clean[.$a-zA-Z0-9_]*$", \
"___finalizer[.$a-zA-Z0-9_]*$",
/* The maximum number of frame levels searched for non-local,
* non-global symbols. This limit exists as a precaution to prevent
* infinite search loops when the stack is screwed up. */
#define MAX_ENCLOSING_FRAME_LEVELS 7
/* Maximum number of steps followed in looking for the ultimate
referent of a renaming. This prevents certain infinite loops that
can otherwise result. */
#define MAX_RENAMING_CHAIN_LENGTH 10
struct block;
/* Corresponding encoded/decoded names and opcodes for Ada user-definable
operators. */
struct ada_opname_map
{
const char *encoded;
const char *decoded;
enum exp_opcode op;
};
/* Table of Ada operators in encoded and decoded forms. */
/* Defined in ada-lang.c */
extern const struct ada_opname_map ada_opname_table[];
/* A tuple representing one instance of a symbol-lookup operation. */
struct ada_symbol_info
{
/* The symbol that was found. */
struct symbol *sym;
/* The block where the symbol was found. */
const struct block *block;
};
/* Denotes a type of renaming symbol (see ada_parse_renaming). */
enum ada_renaming_category
{
/* Indicates a symbol that does not encode a renaming. */
ADA_NOT_RENAMING,
/* For symbols declared
Foo : TYPE renamed OBJECT; */
ADA_OBJECT_RENAMING,
/* For symbols declared
Foo : exception renames EXCEPTION; */
ADA_EXCEPTION_RENAMING,
/* For packages declared
package Foo renames PACKAGE; */
ADA_PACKAGE_RENAMING,
/* For subprograms declared
SUBPROGRAM_SPEC renames SUBPROGRAM;
(Currently not used). */
ADA_SUBPROGRAM_RENAMING
};
/* The different types of catchpoints that we introduced for catching
Ada exceptions. */
enum ada_exception_catchpoint_kind
{
ada_catch_exception,
ada_catch_exception_unhandled,
ada_catch_assert
};
/* Ada task structures. */
struct ada_task_info
{
/* The PTID of the thread that this task runs on. This ptid is computed
in a target-dependent way from the associated Task Control Block. */
ptid_t ptid;
/* The ID of the task. */
CORE_ADDR task_id;
/* The name of the task. */
char name[257];
/* The current state of the task. */
int state;
/* The priority associated to the task. */
int priority;
/* If non-zero, the task ID of the parent task. */
CORE_ADDR parent;
/* If the task is waiting on a task entry, this field contains
the ID of the other task. Zero otherwise. */
CORE_ADDR called_task;
/* If the task is accepting a rendezvous with another task, this field
contains the ID of the calling task. Zero otherwise. */
CORE_ADDR caller_task;
};
/* Assuming V points to an array of S objects, make sure that it contains at
least M objects, updating V and S as necessary. */
#define GROW_VECT(v, s, m) \
if ((s) < (m)) (v) = grow_vect (v, &(s), m, sizeof *(v));
extern void *grow_vect (void *, size_t *, size_t, int);
extern int ada_get_field_index (const struct type *type,
const char *field_name,
int maybe_missing);
extern int ada_parse (struct parser_state *); /* Defined in ada-exp.y */
extern void ada_error (char *); /* Defined in ada-exp.y */
/* Defined in ada-typeprint.c */
extern void ada_print_type (struct type *, const char *, struct ui_file *, int,
int, const struct type_print_options *);
extern void ada_print_typedef (struct type *type, struct symbol *new_symbol,
struct ui_file *stream);
extern void ada_val_print (struct type *, const gdb_byte *, int, CORE_ADDR,
struct ui_file *, int,
const struct value *,
const struct value_print_options *);
extern void ada_value_print (struct value *, struct ui_file *,
const struct value_print_options *);
/* Defined in ada-lang.c */
extern void ada_emit_char (int, struct type *, struct ui_file *, int, int);
extern void ada_printchar (int, struct type *, struct ui_file *);
extern void ada_printstr (struct ui_file *, struct type *, const gdb_byte *,
unsigned int, const char *, int,
const struct value_print_options *);
struct value *ada_convert_actual (struct value *actual,
struct type *formal_type0);
extern struct value *ada_value_subscript (struct value *, int,
struct value **);
extern void ada_fixup_array_indexes_type (struct type *index_desc_type);
extern struct type *ada_array_element_type (struct type *, int);
extern int ada_array_arity (struct type *);
struct type *ada_type_of_array (struct value *, int);
extern struct value *ada_coerce_to_simple_array_ptr (struct value *);
struct value *ada_coerce_to_simple_array (struct value *);
extern int ada_is_simple_array_type (struct type *);
extern int ada_is_array_descriptor_type (struct type *);
extern int ada_is_bogus_array_descriptor (struct type *);
extern LONGEST ada_discrete_type_low_bound (struct type *);
extern LONGEST ada_discrete_type_high_bound (struct type *);
extern struct value *ada_get_decoded_value (struct value *value);
extern struct type *ada_get_decoded_type (struct type *type);
extern const char *ada_decode_symbol (const struct general_symbol_info *);
extern const char *ada_decode (const char*);
extern enum language ada_update_initial_language (enum language);
extern int ada_lookup_symbol_list (const char *, const struct block *,
domain_enum, struct ada_symbol_info**);
extern char *ada_fold_name (const char *);
extern struct symbol *ada_lookup_symbol (const char *, const struct block *,
domain_enum, int *);
extern void ada_lookup_encoded_symbol
(const char *name, const struct block *block, domain_enum namespace,
struct ada_symbol_info *symbol_info);
extern struct bound_minimal_symbol ada_lookup_simple_minsym (const char *);
extern void ada_fill_in_ada_prototype (struct symbol *);
extern int user_select_syms (struct ada_symbol_info *, int, int);
extern int get_selections (int *, int, int, int, char *);
extern int ada_scan_number (const char *, int, LONGEST *, int *);
extern struct type *ada_parent_type (struct type *);
extern int ada_is_ignored_field (struct type *, int);
extern int ada_is_constrained_packed_array_type (struct type *);
extern struct value *ada_value_primitive_packed_val (struct value *,
const gdb_byte *,
long, int, int,
struct type *);
extern struct type *ada_coerce_to_simple_array_type (struct type *);
extern int ada_is_character_type (struct type *);
extern int ada_is_string_type (struct type *);
extern int ada_is_tagged_type (struct type *, int);
extern int ada_is_tag_type (struct type *);
extern struct type *ada_tag_type (struct value *);
extern struct value *ada_value_tag (struct value *);
extern const char *ada_tag_name (struct value *);
extern struct value *ada_tag_value_at_base_address (struct value *obj);
extern int ada_is_parent_field (struct type *, int);
extern int ada_is_wrapper_field (struct type *, int);
extern int ada_is_variant_part (struct type *, int);
extern struct type *ada_variant_discrim_type (struct type *, struct type *);
extern int ada_is_others_clause (struct type *, int);
extern int ada_in_variant (LONGEST, struct type *, int);
extern char *ada_variant_discrim_name (struct type *);
extern struct value *ada_value_struct_elt (struct value *, char *, int);
extern int ada_is_aligner_type (struct type *);
extern struct type *ada_aligned_type (struct type *);
extern const gdb_byte *ada_aligned_value_addr (struct type *,
const gdb_byte *);
extern const char *ada_attribute_name (enum exp_opcode);
extern int ada_is_fixed_point_type (struct type *);
extern int ada_is_system_address_type (struct type *);
extern DOUBLEST ada_delta (struct type *);
extern DOUBLEST ada_fixed_to_float (struct type *, LONGEST);
extern LONGEST ada_float_to_fixed (struct type *, DOUBLEST);
extern struct type *ada_system_address_type (void);
extern int ada_which_variant_applies (struct type *, struct type *,
const gdb_byte *);
extern struct type *ada_to_fixed_type (struct type *, const gdb_byte *,
CORE_ADDR, struct value *,
int check_tag);
extern struct value *ada_to_fixed_value (struct value *val);
extern struct type *ada_template_to_fixed_record_type_1 (struct type *type,
const gdb_byte *valaddr,
CORE_ADDR address,
struct value *dval0,
int keep_dynamic_fields);
extern int ada_name_prefix_len (const char *);
extern const char *ada_type_name (struct type *);
extern struct type *ada_find_parallel_type (struct type *,
const char *suffix);
extern LONGEST get_int_var_value (char *, int *);
extern struct symbol *ada_find_renaming_symbol (struct symbol *name_sym,
const struct block *block);
extern int ada_prefer_type (struct type *, struct type *);
extern struct type *ada_get_base_type (struct type *);
extern struct type *ada_check_typedef (struct type *);
extern char *ada_encode (const char *);
extern const char *ada_enum_name (const char *);
extern int ada_is_modular_type (struct type *);
extern ULONGEST ada_modulus (struct type *);
extern struct value *ada_value_ind (struct value *);
extern void ada_print_scalar (struct type *, LONGEST, struct ui_file *);
extern int ada_is_range_type_name (const char *);
extern enum ada_renaming_category ada_parse_renaming (struct symbol *,
const char **,
int *, const char **);
extern void ada_find_printable_frame (struct frame_info *fi);
extern char *ada_breakpoint_rewrite (char *, int *);
extern char *ada_main_name (void);
extern char *ada_name_for_lookup (const char *name);
extern void create_ada_exception_catchpoint
(struct gdbarch *gdbarch, enum ada_exception_catchpoint_kind ex_kind,
char *excep_string, char *cond_string, int tempflag, int disabled,
int from_tty);
/* Some information about a given Ada exception. */
typedef struct ada_exc_info
{
/* The name of the exception. */
const char *name;
/* The address of the symbol corresponding to that exception. */
CORE_ADDR addr;
} ada_exc_info;
DEF_VEC_O(ada_exc_info);
extern VEC(ada_exc_info) *ada_exceptions_list (const char *regexp);
/* Tasking-related: ada-tasks.c */
extern int valid_task_id (int);
extern int ada_get_task_number (ptid_t);
typedef void (ada_task_list_iterator_ftype) (struct ada_task_info *task);
extern void iterate_over_live_ada_tasks
(ada_task_list_iterator_ftype *iterator);
extern int ada_build_task_list (void);
extern void print_ada_task_info (struct ui_out *uiout,
char *taskno_str,
struct inferior *inf);
#endif
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