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binutils-gdb/gdb/expprint.c
Christian Biesinger 987012b89b Replace SYMBOL_*_NAME accessors with member functions 
Similar to the MSYMBOL version of this patch, improves readability
and will eventually allow making name private.

gdb/ChangeLog:

2019-11-22  Christian Biesinger  <cbiesinger@google.com>

	* ada-exp.y: Update.
	* ada-lang.c (sort_choices): Update.
	(ada_print_symbol_signature): Update.
	(resolve_subexp): Update.
	(ada_parse_renaming): Update.
	(ada_read_renaming_var_value): Update.
	(lesseq_defined_than): Update.
	(remove_extra_symbols): Update.
	(remove_irrelevant_renamings): Update.
	(ada_add_block_symbols): Update.
	(ada_collect_symbol_completion_matches): Update.
	(ada_is_renaming_symbol): Update.
	(aggregate_assign_from_choices): Update.
	(ada_evaluate_subexp): Update.
	(ada_has_this_exception_support): Update.
	(ada_is_non_standard_exception_sym): Update.
	(ada_add_exceptions_from_frame): Update.
	(ada_add_global_exceptions): Update.
	(ada_print_subexp): Update.
	* ax-gdb.c (gen_var_ref): Update.
	(gen_maybe_namespace_elt): Update.
	(gen_expr_for_cast): Update.
	(gen_expr): Update.
	* block.h: Update.
	* blockframe.c (find_pc_partial_function): Update.
	* breakpoint.c (print_breakpoint_location): Update.
	(update_static_tracepoint): Update.
	* btrace.c (ftrace_print_function_name): Update.
	(ftrace_function_switched): Update.
	* buildsym.c (find_symbol_in_list): Update.
	* c-exp.y: Update.
	* c-typeprint.c (c_print_typedef): Update.
	(c_type_print_template_args): Update.
	* cli/cli-cmds.c (edit_command): Update.
	(list_command): Update.
	(print_sal_location): Update.
	* coffread.c (patch_opaque_types): Update.
	(process_coff_symbol): Update.
	(coff_read_enum_type): Update.
	* compile/compile-c-symbols.c (c_symbol_substitution_name): Update.
	(convert_one_symbol): Update.
	(hash_symname): Update.
	(eq_symname): Update.
	* compile/compile-cplus-symbols.c (convert_one_symbol): Update.
	* compile/compile-cplus-types.c (debug_print_scope): Update.
	* compile/compile-loc2c.c (do_compile_dwarf_expr_to_c): Update.
	* compile/compile-object-load.c (get_out_value_type): Update.
	* cp-namespace.c (cp_scan_for_anonymous_namespaces): Update.
	(search_symbol_list): Update.
	(cp_lookup_symbol_imports_or_template): Update.
	* cp-support.c (overload_list_add_symbol): Update.
	* ctfread.c (psymtab_to_symtab): Update.
	* dbxread.c (cp_set_block_scope): Update.
	* dictionary.c (iter_match_first_hashed): Update.
	(iter_match_next_hashed): Update.
	(insert_symbol_hashed): Update.
	(iter_match_next_linear): Update.
	* dictionary.h: Update.
	* dwarf2loc.c (func_get_frame_base_dwarf_block): Update.
	(locexpr_describe_location_piece): Update.
	(locexpr_describe_location_1): Update.
	(locexpr_generate_c_location): Update.
	(loclist_describe_location): Update.
	(loclist_generate_c_location): Update.
	* dwarf2read.c (dw2_debug_names_lookup_symbol): Update.
	(read_func_scope): Update.
	(process_enumeration_scope): Update.
	(new_symbol): Update.
	(dwarf2_const_value): Update.
	(dwarf2_symbol_mark_computed): Update.
	* eval.c (evaluate_funcall): Update.
	(evaluate_subexp_standard): Update.
	* expprint.c (print_subexp_standard): Update.
	(dump_subexp_body_standard): Update.
	* f-valprint.c (info_common_command_for_block): Update.
	* findvar.c (get_hosting_frame): Update.
	(default_read_var_value): Update.
	* go-lang.c (go_symbol_package_name): Update.
	* guile/scm-block.c (bkscm_print_block_smob): Update.
	* guile/scm-symbol.c (syscm_print_symbol_smob): Update.
	(gdbscm_symbol_name): Update.
	(gdbscm_symbol_linkage_name): Update.
	(gdbscm_symbol_print_name): Update.
	* infcall.c (get_function_name): Update.
	* infcmd.c (jump_command): Update.
	(finish_command): Update.
	* infrun.c (insert_exception_resume_breakpoint): Update.
	* linespec.c (canonicalize_linespec): Update.
	(create_sals_line_offset): Update.
	(convert_linespec_to_sals): Update.
	(complete_label): Update.
	(find_label_symbols_in_block): Update.
	* m2-typeprint.c (m2_print_typedef): Update.
	* mdebugread.c (mdebug_reg_to_regnum): Update.
	(parse_symbol): Update.
	(mylookup_symbol): Update.
	* mi/mi-cmd-stack.c (list_arg_or_local): Update.
	(list_args_or_locals): Update.
	* objc-lang.c (compare_selectors): Update.
	(info_selectors_command): Update.
	(compare_classes): Update.
	(info_classes_command): Update.
	(find_imps): Update.
	* p-typeprint.c (pascal_print_typedef): Update.
	* printcmd.c (build_address_symbolic): Update.
	(info_address_command): Update.
	(print_variable_and_value): Update.
	* python/py-framefilter.c (extract_sym): Update.
	(py_print_single_arg): Update.
	* python/py-symbol.c (sympy_str): Update.
	(sympy_get_name): Update.
	(sympy_get_linkage_name): Update.
	* python/python.c (gdbpy_rbreak): Update.
	* record-btrace.c (btrace_get_bfun_name): Update.
	(btrace_call_history): Update.
	* rust-lang.c (rust_print_typedef): Update.
	* solib-frv.c (frv_fdpic_find_canonical_descriptor): Update.
	* stabsread.c (stab_reg_to_regnum): Update.
	(define_symbol): Update.
	(read_enum_type): Update.
	(common_block_end): Update.
	(cleanup_undefined_types_1): Update.
	(scan_file_globals): Update.
	* stack.c (print_frame_arg): Update.
	(print_frame_args): Update.
	(find_frame_funname): Update.
	(info_frame_command_core): Update.
	(iterate_over_block_locals): Update.
	(print_block_frame_labels): Update.
	(do_print_variable_and_value): Update.
	(iterate_over_block_arg_vars): Update.
	(return_command): Update.
	* symmisc.c (dump_symtab_1): Update.
	(print_symbol): Update.
	* symtab.c (eq_symbol_entry): Update.
	(symbol_cache_dump): Update.
	(lookup_language_this): Update.
	(find_pc_sect_line): Update.
	(skip_prologue_sal): Update.
	(symbol_search::compare_search_syms): Update.
	(treg_matches_sym_type_name): Update.
	(search_symbols): Update.
	(print_symbol_info): Update.
	(rbreak_command): Update.
	(completion_list_add_symbol): Update.
	(find_gnu_ifunc): Update.
	(get_symbol_address): Update.
	(search_module_symbols): Update.
	(info_module_subcommand): Update.
	* symtab.h (SYMBOL_NATURAL_NAME): Remove.
	(SYMBOL_LINKAGE_NAME): Remove.
	(SYMBOL_DEMANGLED_NAME): Remove.
	(SYMBOL_PRINT_NAME): Remove.
	(SYMBOL_SEARCH_NAME): Remove.
	* tracepoint.c (set_traceframe_context): Update.
	(validate_actionline): Update.
	(collection_list::collect_symbol): Update.
	(encode_actions_1): Update.
	(info_scope_command): Update.
	(print_one_static_tracepoint_marker): Update.
	* typeprint.c (typedef_hash_table::add_template_parameters): Update.
	* valops.c (address_of_variable): Update.
	(find_overload_match): Update.
	(find_oload_champ): Update.

Change-Id: I76bdc8b44eea6876bf03af9d351f8e90cc0154b2
2019-11-22 12:05:14 -06:00

1174 lines
32 KiB
C
Raw Blame History

/* Print in infix form a struct expression.
Copyright (C) 1986-2019 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/>. */
#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "value.h"
#include "language.h"
#include "parser-defs.h"
#include "user-regs.h" /* For user_reg_map_regnum_to_name. */
#include "target.h"
#include "block.h"
#include "objfiles.h"
#include "valprint.h"
#include "cli/cli-style.h"
#include <ctype.h>
void
print_expression (struct expression *exp, struct ui_file *stream)
{
int pc = 0;
print_subexp (exp, &pc, stream, PREC_NULL);
}
/* Print the subexpression of EXP that starts in position POS, on STREAM.
PREC is the precedence of the surrounding operator;
if the precedence of the main operator of this subexpression is less,
parentheses are needed here. */
void
print_subexp (struct expression *exp, int *pos,
struct ui_file *stream, enum precedence prec)
{
exp->language_defn->la_exp_desc->print_subexp (exp, pos, stream, prec);
}
/* Standard implementation of print_subexp for use in language_defn
vectors. */
void
print_subexp_standard (struct expression *exp, int *pos,
struct ui_file *stream, enum precedence prec)
{
unsigned tem;
const struct op_print *op_print_tab;
int pc;
unsigned nargs;
const char *op_str;
int assign_modify = 0;
enum exp_opcode opcode;
enum precedence myprec = PREC_NULL;
/* Set to 1 for a right-associative operator. */
int assoc = 0;
struct value *val;
char *tempstr = NULL;
op_print_tab = exp->language_defn->la_op_print_tab;
pc = (*pos)++;
opcode = exp->elts[pc].opcode;
switch (opcode)
{
/* Common ops */
case OP_TYPE:
(*pos) += 2;
type_print (exp->elts[pc + 1].type, "", stream, 0);
return;
case OP_SCOPE:
myprec = PREC_PREFIX;
assoc = 0;
fputs_filtered (TYPE_NAME (exp->elts[pc + 1].type), stream);
fputs_filtered ("::", stream);
nargs = longest_to_int (exp->elts[pc + 2].longconst);
(*pos) += 4 + BYTES_TO_EXP_ELEM (nargs + 1);
fputs_filtered (&exp->elts[pc + 3].string, stream);
return;
case OP_LONG:
{
struct value_print_options opts;
get_no_prettyformat_print_options (&opts);
(*pos) += 3;
value_print (value_from_longest (exp->elts[pc + 1].type,
exp->elts[pc + 2].longconst),
stream, &opts);
}
return;
case OP_FLOAT:
{
struct value_print_options opts;
get_no_prettyformat_print_options (&opts);
(*pos) += 3;
value_print (value_from_contents (exp->elts[pc + 1].type,
exp->elts[pc + 2].floatconst),
stream, &opts);
}
return;
case OP_VAR_VALUE:
{
const struct block *b;
(*pos) += 3;
b = exp->elts[pc + 1].block;
if (b != NULL
&& BLOCK_FUNCTION (b) != NULL
&& BLOCK_FUNCTION (b)->print_name () != NULL)
{
fputs_filtered (BLOCK_FUNCTION (b)->print_name (), stream);
fputs_filtered ("::", stream);
}
fputs_filtered (exp->elts[pc + 2].symbol->print_name (), stream);
}
return;
case OP_VAR_MSYM_VALUE:
{
(*pos) += 3;
fputs_filtered (exp->elts[pc + 2].msymbol->print_name (), stream);
}
return;
case OP_FUNC_STATIC_VAR:
{
tem = longest_to_int (exp->elts[pc + 1].longconst);
(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
fputs_filtered (&exp->elts[pc + 1].string, stream);
}
return;
case OP_VAR_ENTRY_VALUE:
{
(*pos) += 2;
fprintf_filtered (stream, "%s@entry",
exp->elts[pc + 1].symbol->print_name ());
}
return;
case OP_LAST:
(*pos) += 2;
fprintf_filtered (stream, "$%d",
longest_to_int (exp->elts[pc + 1].longconst));
return;
case OP_REGISTER:
{
const char *name = &exp->elts[pc + 2].string;
(*pos) += 3 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1);
fprintf_filtered (stream, "$%s", name);
return;
}
case OP_BOOL:
(*pos) += 2;
fprintf_filtered (stream, "%s",
longest_to_int (exp->elts[pc + 1].longconst)
? "TRUE" : "FALSE");
return;
case OP_INTERNALVAR:
(*pos) += 2;
fprintf_filtered (stream, "$%s",
internalvar_name (exp->elts[pc + 1].internalvar));
return;
case OP_FUNCALL:
case OP_F77_UNDETERMINED_ARGLIST:
(*pos) += 2;
nargs = longest_to_int (exp->elts[pc + 1].longconst);
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered (" (", stream);
for (tem = 0; tem < nargs; tem++)
{
if (tem != 0)
fputs_filtered (", ", stream);
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
}
fputs_filtered (")", stream);
return;
case OP_NAME:
nargs = longest_to_int (exp->elts[pc + 1].longconst);
(*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
fputs_filtered (&exp->elts[pc + 2].string, stream);
return;
case OP_STRING:
{
struct value_print_options opts;
nargs = longest_to_int (exp->elts[pc + 1].longconst);
(*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
/* LA_PRINT_STRING will print using the current repeat count threshold.
If necessary, we can temporarily set it to zero, or pass it as an
additional parameter to LA_PRINT_STRING. -fnf */
get_user_print_options (&opts);
LA_PRINT_STRING (stream, builtin_type (exp->gdbarch)->builtin_char,
(gdb_byte *) &exp->elts[pc + 2].string, nargs,
NULL, 0, &opts);
}
return;
case OP_OBJC_NSSTRING: /* Objective-C Foundation Class
NSString constant. */
{
struct value_print_options opts;
nargs = longest_to_int (exp->elts[pc + 1].longconst);
(*pos) += 3 + BYTES_TO_EXP_ELEM (nargs + 1);
fputs_filtered ("@\"", stream);
get_user_print_options (&opts);
LA_PRINT_STRING (stream, builtin_type (exp->gdbarch)->builtin_char,
(gdb_byte *) &exp->elts[pc + 2].string, nargs,
NULL, 0, &opts);
fputs_filtered ("\"", stream);
}
return;
case OP_OBJC_MSGCALL:
{ /* Objective C message (method) call. */
gdb::unique_xmalloc_ptr<char> selector;
(*pos) += 3;
nargs = longest_to_int (exp->elts[pc + 2].longconst);
fprintf_unfiltered (stream, "[");
print_subexp (exp, pos, stream, PREC_SUFFIX);
if (0 == target_read_string (exp->elts[pc + 1].longconst,
&selector, 1024, NULL))
{
error (_("bad selector"));
return;
}
if (nargs)
{
char *s, *nextS;
s = selector.get ();
for (tem = 0; tem < nargs; tem++)
{
nextS = strchr (s, ':');
gdb_assert (nextS); /* Make sure we found ':'. */
*nextS = '\0';
fprintf_unfiltered (stream, " %s: ", s);
s = nextS + 1;
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
}
}
else
{
fprintf_unfiltered (stream, " %s", selector.get ());
}
fprintf_unfiltered (stream, "]");
return;
}
case OP_ARRAY:
(*pos) += 3;
nargs = longest_to_int (exp->elts[pc + 2].longconst);
nargs -= longest_to_int (exp->elts[pc + 1].longconst);
nargs++;
tem = 0;
if (exp->elts[pc + 4].opcode == OP_LONG
&& exp->elts[pc + 5].type
== builtin_type (exp->gdbarch)->builtin_char
&& exp->language_defn->la_language == language_c)
{
/* Attempt to print C character arrays using string syntax.
Walk through the args, picking up one character from each
of the OP_LONG expression elements. If any array element
does not match our expection of what we should find for
a simple string, revert back to array printing. Note that
the last expression element is an explicit null terminator
byte, which doesn't get printed. */
tempstr = (char *) alloca (nargs);
pc += 4;
while (tem < nargs)
{
if (exp->elts[pc].opcode != OP_LONG
|| exp->elts[pc + 1].type
!= builtin_type (exp->gdbarch)->builtin_char)
{
/* Not a simple array of char, use regular array
printing. */
tem = 0;
break;
}
else
{
tempstr[tem++] =
longest_to_int (exp->elts[pc + 2].longconst);
pc += 4;
}
}
}
if (tem > 0)
{
struct value_print_options opts;
get_user_print_options (&opts);
LA_PRINT_STRING (stream, builtin_type (exp->gdbarch)->builtin_char,
(gdb_byte *) tempstr, nargs - 1, NULL, 0, &opts);
(*pos) = pc;
}
else
{
fputs_filtered (" {", stream);
for (tem = 0; tem < nargs; tem++)
{
if (tem != 0)
{
fputs_filtered (", ", stream);
}
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
}
fputs_filtered ("}", stream);
}
return;
case TERNOP_COND:
if ((int) prec > (int) PREC_COMMA)
fputs_filtered ("(", stream);
/* Print the subexpressions, forcing parentheses
around any binary operations within them.
This is more parentheses than are strictly necessary,
but it looks clearer. */
print_subexp (exp, pos, stream, PREC_HYPER);
fputs_filtered (" ? ", stream);
print_subexp (exp, pos, stream, PREC_HYPER);
fputs_filtered (" : ", stream);
print_subexp (exp, pos, stream, PREC_HYPER);
if ((int) prec > (int) PREC_COMMA)
fputs_filtered (")", stream);
return;
case TERNOP_SLICE:
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered ("(", stream);
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
fputs_filtered (opcode == TERNOP_SLICE ? " : " : " UP ", stream);
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
fputs_filtered (")", stream);
return;
case STRUCTOP_STRUCT:
tem = longest_to_int (exp->elts[pc + 1].longconst);
(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered (".", stream);
fputs_filtered (&exp->elts[pc + 2].string, stream);
return;
/* Will not occur for Modula-2. */
case STRUCTOP_PTR:
tem = longest_to_int (exp->elts[pc + 1].longconst);
(*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1);
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered ("->", stream);
fputs_filtered (&exp->elts[pc + 2].string, stream);
return;
case STRUCTOP_MEMBER:
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered (".*", stream);
print_subexp (exp, pos, stream, PREC_SUFFIX);
return;
case STRUCTOP_MPTR:
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered ("->*", stream);
print_subexp (exp, pos, stream, PREC_SUFFIX);
return;
case BINOP_SUBSCRIPT:
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered ("[", stream);
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
fputs_filtered ("]", stream);
return;
case UNOP_POSTINCREMENT:
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered ("++", stream);
return;
case UNOP_POSTDECREMENT:
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered ("--", stream);
return;
case UNOP_CAST:
(*pos) += 2;
if ((int) prec > (int) PREC_PREFIX)
fputs_filtered ("(", stream);
fputs_filtered ("(", stream);
type_print (exp->elts[pc + 1].type, "", stream, 0);
fputs_filtered (") ", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
if ((int) prec > (int) PREC_PREFIX)
fputs_filtered (")", stream);
return;
case UNOP_CAST_TYPE:
if ((int) prec > (int) PREC_PREFIX)
fputs_filtered ("(", stream);
fputs_filtered ("(", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
fputs_filtered (") ", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
if ((int) prec > (int) PREC_PREFIX)
fputs_filtered (")", stream);
return;
case UNOP_DYNAMIC_CAST:
case UNOP_REINTERPRET_CAST:
fputs_filtered (opcode == UNOP_DYNAMIC_CAST ? "dynamic_cast"
: "reinterpret_cast", stream);
fputs_filtered ("<", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
fputs_filtered ("> (", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
fputs_filtered (")", stream);
return;
case UNOP_MEMVAL:
(*pos) += 2;
if ((int) prec > (int) PREC_PREFIX)
fputs_filtered ("(", stream);
if (TYPE_CODE (exp->elts[pc + 1].type) == TYPE_CODE_FUNC
&& exp->elts[pc + 3].opcode == OP_LONG)
{
struct value_print_options opts;
/* We have a minimal symbol fn, probably. It's encoded
as a UNOP_MEMVAL (function-type) of an OP_LONG (int, address).
Swallow the OP_LONG (including both its opcodes); ignore
its type; print the value in the type of the MEMVAL. */
(*pos) += 4;
val = value_at_lazy (exp->elts[pc + 1].type,
(CORE_ADDR) exp->elts[pc + 5].longconst);
get_no_prettyformat_print_options (&opts);
value_print (val, stream, &opts);
}
else
{
fputs_filtered ("{", stream);
type_print (exp->elts[pc + 1].type, "", stream, 0);
fputs_filtered ("} ", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
}
if ((int) prec > (int) PREC_PREFIX)
fputs_filtered (")", stream);
return;
case UNOP_MEMVAL_TYPE:
if ((int) prec > (int) PREC_PREFIX)
fputs_filtered ("(", stream);
fputs_filtered ("{", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
fputs_filtered ("} ", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
if ((int) prec > (int) PREC_PREFIX)
fputs_filtered (")", stream);
return;
case BINOP_ASSIGN_MODIFY:
opcode = exp->elts[pc + 1].opcode;
(*pos) += 2;
myprec = PREC_ASSIGN;
assoc = 1;
assign_modify = 1;
op_str = "???";
for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
if (op_print_tab[tem].opcode == opcode)
{
op_str = op_print_tab[tem].string;
break;
}
if (op_print_tab[tem].opcode != opcode)
/* Not found; don't try to keep going because we don't know how
to interpret further elements. */
error (_("Invalid expression"));
break;
/* C++ ops */
case OP_THIS:
++(*pos);
if (exp->language_defn->la_name_of_this)
fputs_filtered (exp->language_defn->la_name_of_this, stream);
else
fprintf_styled (stream, metadata_style.style (),
_("<language %s has no 'this'>"),
exp->language_defn->la_name);
return;
/* Modula-2 ops */
case MULTI_SUBSCRIPT:
(*pos) += 2;
nargs = longest_to_int (exp->elts[pc + 1].longconst);
print_subexp (exp, pos, stream, PREC_SUFFIX);
fprintf_unfiltered (stream, " [");
for (tem = 0; tem < nargs; tem++)
{
if (tem != 0)
fprintf_unfiltered (stream, ", ");
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
}
fprintf_unfiltered (stream, "]");
return;
case BINOP_VAL:
(*pos) += 2;
fprintf_unfiltered (stream, "VAL(");
type_print (exp->elts[pc + 1].type, "", stream, 0);
fprintf_unfiltered (stream, ",");
print_subexp (exp, pos, stream, PREC_PREFIX);
fprintf_unfiltered (stream, ")");
return;
case TYPE_INSTANCE:
{
type_instance_flags flags
= (type_instance_flag_value) longest_to_int (exp->elts[pc + 1].longconst);
LONGEST count = exp->elts[pc + 2].longconst;
/* The FLAGS. */
(*pos)++;
/* The COUNT. */
(*pos)++;
fputs_unfiltered ("TypeInstance(", stream);
while (count-- > 0)
{
type_print (exp->elts[(*pos)++].type, "", stream, 0);
if (count > 0)
fputs_unfiltered (",", stream);
}
fputs_unfiltered (",", stream);
/* Ending COUNT and ending TYPE_INSTANCE. */
(*pos) += 2;
print_subexp (exp, pos, stream, PREC_PREFIX);
if (flags & TYPE_INSTANCE_FLAG_CONST)
fputs_unfiltered (",const", stream);
if (flags & TYPE_INSTANCE_FLAG_VOLATILE)
fputs_unfiltered (",volatile", stream);
fputs_unfiltered (")", stream);
return;
}
case OP_RANGE:
{
enum range_type range_type;
range_type = (enum range_type)
longest_to_int (exp->elts[pc + 1].longconst);
*pos += 2;
if (range_type == NONE_BOUND_DEFAULT_EXCLUSIVE
|| range_type == LOW_BOUND_DEFAULT_EXCLUSIVE)
fputs_filtered ("EXCLUSIVE_", stream);
fputs_filtered ("RANGE(", stream);
if (range_type == HIGH_BOUND_DEFAULT
|| range_type == NONE_BOUND_DEFAULT
|| range_type == NONE_BOUND_DEFAULT_EXCLUSIVE)
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
fputs_filtered ("..", stream);
if (range_type == LOW_BOUND_DEFAULT
|| range_type == NONE_BOUND_DEFAULT)
print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
fputs_filtered (")", stream);
return;
}
/* Default ops */
default:
op_str = "???";
for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
if (op_print_tab[tem].opcode == opcode)
{
op_str = op_print_tab[tem].string;
myprec = op_print_tab[tem].precedence;
assoc = op_print_tab[tem].right_assoc;
break;
}
if (op_print_tab[tem].opcode != opcode)
/* Not found; don't try to keep going because we don't know how
to interpret further elements. For example, this happens
if opcode is OP_TYPE. */
error (_("Invalid expression"));
}
/* Note that PREC_BUILTIN will always emit parentheses. */
if ((int) myprec < (int) prec)
fputs_filtered ("(", stream);
if ((int) opcode > (int) BINOP_END)
{
if (assoc)
{
/* Unary postfix operator. */
print_subexp (exp, pos, stream, PREC_SUFFIX);
fputs_filtered (op_str, stream);
}
else
{
/* Unary prefix operator. */
fputs_filtered (op_str, stream);
if (myprec == PREC_BUILTIN_FUNCTION)
fputs_filtered ("(", stream);
print_subexp (exp, pos, stream, PREC_PREFIX);
if (myprec == PREC_BUILTIN_FUNCTION)
fputs_filtered (")", stream);
}
}
else
{
/* Binary operator. */
/* Print left operand.
If operator is right-associative,
increment precedence for this operand. */
print_subexp (exp, pos, stream,
(enum precedence) ((int) myprec + assoc));
/* Print the operator itself. */
if (assign_modify)
fprintf_filtered (stream, " %s= ", op_str);
else if (op_str[0] == ',')
fprintf_filtered (stream, "%s ", op_str);
else
fprintf_filtered (stream, " %s ", op_str);
/* Print right operand.
If operator is left-associative,
increment precedence for this operand. */
print_subexp (exp, pos, stream,
(enum precedence) ((int) myprec + !assoc));
}
if ((int) myprec < (int) prec)
fputs_filtered (")", stream);
}
/* Return the operator corresponding to opcode OP as
a string. NULL indicates that the opcode was not found in the
current language table. */
const char *
op_string (enum exp_opcode op)
{
int tem;
const struct op_print *op_print_tab;
op_print_tab = current_language->la_op_print_tab;
for (tem = 0; op_print_tab[tem].opcode != OP_NULL; tem++)
if (op_print_tab[tem].opcode == op)
return op_print_tab[tem].string;
return NULL;
}
/* Support for dumping the raw data from expressions in a human readable
form. */
static int dump_subexp_body (struct expression *exp, struct ui_file *, int);
/* Name for OPCODE, when it appears in expression EXP. */
const char *
op_name (struct expression *exp, enum exp_opcode opcode)
{
if (opcode >= OP_UNUSED_LAST)
{
char *cell = get_print_cell ();
xsnprintf (cell, PRINT_CELL_SIZE, "unknown opcode: %u",
unsigned (opcode));
return cell;
}
return exp->language_defn->la_exp_desc->op_name (opcode);
}
/* Default name for the standard operator OPCODE (i.e., one defined in
the definition of enum exp_opcode). */
const char *
op_name_standard (enum exp_opcode opcode)
{
switch (opcode)
{
default:
{
static char buf[30];
xsnprintf (buf, sizeof (buf), "<unknown %d>", opcode);
return buf;
}
#define OP(name) \
case name: \
return #name ;
#include "std-operator.def"
#undef OP
}
}
/* Print a raw dump of expression EXP to STREAM.
NOTE, if non-NULL, is printed as extra explanatory text. */
void
dump_raw_expression (struct expression *exp, struct ui_file *stream,
const char *note)
{
int elt;
char *eltscan;
int eltsize;
fprintf_filtered (stream, "Dump of expression @ ");
gdb_print_host_address (exp, stream);
if (note)
fprintf_filtered (stream, ", %s:", note);
fprintf_filtered (stream, "\n\tLanguage %s, %d elements, %ld bytes each.\n",
exp->language_defn->la_name, exp->nelts,
(long) sizeof (union exp_element));
fprintf_filtered (stream, "\t%5s %20s %16s %s\n", "Index", "Opcode",
"Hex Value", "String Value");
for (elt = 0; elt < exp->nelts; elt++)
{
fprintf_filtered (stream, "\t%5d ", elt);
const char *opcode_name = op_name (exp, exp->elts[elt].opcode);
fprintf_filtered (stream, "%20s ", opcode_name);
print_longest (stream, 'd', 0, exp->elts[elt].longconst);
fprintf_filtered (stream, " ");
for (eltscan = (char *) &exp->elts[elt],
eltsize = sizeof (union exp_element);
eltsize-- > 0;
eltscan++)
{
fprintf_filtered (stream, "%c",
isprint (*eltscan) ? (*eltscan & 0xFF) : '.');
}
fprintf_filtered (stream, "\n");
}
}
/* Dump the subexpression of prefix expression EXP whose operator is at
position ELT onto STREAM. Returns the position of the next
subexpression in EXP. */
int
dump_subexp (struct expression *exp, struct ui_file *stream, int elt)
{
static int indent = 0;
int i;
fprintf_filtered (stream, "\n");
fprintf_filtered (stream, "\t%5d ", elt);
for (i = 1; i <= indent; i++)
fprintf_filtered (stream, " ");
indent += 2;
fprintf_filtered (stream, "%-20s ", op_name (exp, exp->elts[elt].opcode));
elt = dump_subexp_body (exp, stream, elt);
indent -= 2;
return elt;
}
/* Dump the operands of prefix expression EXP whose opcode is at
position ELT onto STREAM. Returns the position of the next
subexpression in EXP. */
static int
dump_subexp_body (struct expression *exp, struct ui_file *stream, int elt)
{
return exp->language_defn->la_exp_desc->dump_subexp_body (exp, stream, elt);
}
/* Default value for subexp_body in exp_descriptor vector. */
int
dump_subexp_body_standard (struct expression *exp,
struct ui_file *stream, int elt)
{
int opcode = exp->elts[elt++].opcode;
switch (opcode)
{
case TERNOP_COND:
case TERNOP_SLICE:
elt = dump_subexp (exp, stream, elt);
/* FALL THROUGH */
case BINOP_ADD:
case BINOP_SUB:
case BINOP_MUL:
case BINOP_DIV:
case BINOP_REM:
case BINOP_MOD:
case BINOP_LSH:
case BINOP_RSH:
case BINOP_LOGICAL_AND:
case BINOP_LOGICAL_OR:
case BINOP_BITWISE_AND:
case BINOP_BITWISE_IOR:
case BINOP_BITWISE_XOR:
case BINOP_EQUAL:
case BINOP_NOTEQUAL:
case BINOP_LESS:
case BINOP_GTR:
case BINOP_LEQ:
case BINOP_GEQ:
case BINOP_REPEAT:
case BINOP_ASSIGN:
case BINOP_COMMA:
case BINOP_SUBSCRIPT:
case BINOP_EXP:
case BINOP_MIN:
case BINOP_MAX:
case BINOP_INTDIV:
case BINOP_ASSIGN_MODIFY:
case BINOP_VAL:
case BINOP_CONCAT:
case BINOP_END:
case STRUCTOP_MEMBER:
case STRUCTOP_MPTR:
elt = dump_subexp (exp, stream, elt);
/* FALL THROUGH */
case UNOP_NEG:
case UNOP_LOGICAL_NOT:
case UNOP_COMPLEMENT:
case UNOP_IND:
case UNOP_ADDR:
case UNOP_PREINCREMENT:
case UNOP_POSTINCREMENT:
case UNOP_PREDECREMENT:
case UNOP_POSTDECREMENT:
case UNOP_SIZEOF:
case UNOP_ALIGNOF:
case UNOP_PLUS:
case UNOP_CAP:
case UNOP_CHR:
case UNOP_ORD:
case UNOP_ABS:
case UNOP_FLOAT:
case UNOP_HIGH:
case UNOP_MAX:
case UNOP_MIN:
case UNOP_ODD:
case UNOP_TRUNC:
elt = dump_subexp (exp, stream, elt);
break;
case OP_LONG:
fprintf_filtered (stream, "Type @");
gdb_print_host_address (exp->elts[elt].type, stream);
fprintf_filtered (stream, " (");
type_print (exp->elts[elt].type, NULL, stream, 0);
fprintf_filtered (stream, "), value %ld (0x%lx)",
(long) exp->elts[elt + 1].longconst,
(long) exp->elts[elt + 1].longconst);
elt += 3;
break;
case OP_FLOAT:
fprintf_filtered (stream, "Type @");
gdb_print_host_address (exp->elts[elt].type, stream);
fprintf_filtered (stream, " (");
type_print (exp->elts[elt].type, NULL, stream, 0);
fprintf_filtered (stream, "), value ");
print_floating (exp->elts[elt + 1].floatconst,
exp->elts[elt].type, stream);
elt += 3;
break;
case OP_VAR_VALUE:
fprintf_filtered (stream, "Block @");
gdb_print_host_address (exp->elts[elt].block, stream);
fprintf_filtered (stream, ", symbol @");
gdb_print_host_address (exp->elts[elt + 1].symbol, stream);
fprintf_filtered (stream, " (%s)",
exp->elts[elt + 1].symbol->print_name ());
elt += 3;
break;
case OP_VAR_MSYM_VALUE:
fprintf_filtered (stream, "Objfile @");
gdb_print_host_address (exp->elts[elt].objfile, stream);
fprintf_filtered (stream, ", msymbol @");
gdb_print_host_address (exp->elts[elt + 1].msymbol, stream);
fprintf_filtered (stream, " (%s)",
exp->elts[elt + 1].msymbol->print_name ());
elt += 3;
break;
case OP_VAR_ENTRY_VALUE:
fprintf_filtered (stream, "Entry value of symbol @");
gdb_print_host_address (exp->elts[elt].symbol, stream);
fprintf_filtered (stream, " (%s)",
exp->elts[elt].symbol->print_name ());
elt += 2;
break;
case OP_LAST:
fprintf_filtered (stream, "History element %ld",
(long) exp->elts[elt].longconst);
elt += 2;
break;
case OP_REGISTER:
fprintf_filtered (stream, "Register $%s", &exp->elts[elt + 1].string);
elt += 3 + BYTES_TO_EXP_ELEM (exp->elts[elt].longconst + 1);
break;
case OP_INTERNALVAR:
fprintf_filtered (stream, "Internal var @");
gdb_print_host_address (exp->elts[elt].internalvar, stream);
fprintf_filtered (stream, " (%s)",
internalvar_name (exp->elts[elt].internalvar));
elt += 2;
break;
case OP_FUNCALL:
case OP_F77_UNDETERMINED_ARGLIST:
{
int i, nargs;
nargs = longest_to_int (exp->elts[elt].longconst);
fprintf_filtered (stream, "Number of args: %d", nargs);
elt += 2;
for (i = 1; i <= nargs + 1; i++)
elt = dump_subexp (exp, stream, elt);
}
break;
case OP_ARRAY:
{
int lower, upper;
int i;
lower = longest_to_int (exp->elts[elt].longconst);
upper = longest_to_int (exp->elts[elt + 1].longconst);
fprintf_filtered (stream, "Bounds [%d:%d]", lower, upper);
elt += 3;
for (i = 1; i <= upper - lower + 1; i++)
elt = dump_subexp (exp, stream, elt);
}
break;
case UNOP_DYNAMIC_CAST:
case UNOP_REINTERPRET_CAST:
case UNOP_CAST_TYPE:
case UNOP_MEMVAL_TYPE:
fprintf_filtered (stream, " (");
elt = dump_subexp (exp, stream, elt);
fprintf_filtered (stream, ")");
elt = dump_subexp (exp, stream, elt);
break;
case UNOP_MEMVAL:
case UNOP_CAST:
fprintf_filtered (stream, "Type @");
gdb_print_host_address (exp->elts[elt].type, stream);
fprintf_filtered (stream, " (");
type_print (exp->elts[elt].type, NULL, stream, 0);
fprintf_filtered (stream, ")");
elt = dump_subexp (exp, stream, elt + 2);
break;
case OP_TYPE:
fprintf_filtered (stream, "Type @");
gdb_print_host_address (exp->elts[elt].type, stream);
fprintf_filtered (stream, " (");
type_print (exp->elts[elt].type, NULL, stream, 0);
fprintf_filtered (stream, ")");
elt += 2;
break;
case OP_TYPEOF:
case OP_DECLTYPE:
fprintf_filtered (stream, "Typeof (");
elt = dump_subexp (exp, stream, elt);
fprintf_filtered (stream, ")");
break;
case OP_TYPEID:
fprintf_filtered (stream, "typeid (");
elt = dump_subexp (exp, stream, elt);
fprintf_filtered (stream, ")");
break;
case STRUCTOP_STRUCT:
case STRUCTOP_PTR:
{
char *elem_name;
int len;
len = longest_to_int (exp->elts[elt].longconst);
elem_name = &exp->elts[elt + 1].string;
fprintf_filtered (stream, "Element name: `%.*s'", len, elem_name);
elt = dump_subexp (exp, stream, elt + 3 + BYTES_TO_EXP_ELEM (len + 1));
}
break;
case OP_SCOPE:
{
char *elem_name;
int len;
fprintf_filtered (stream, "Type @");
gdb_print_host_address (exp->elts[elt].type, stream);
fprintf_filtered (stream, " (");
type_print (exp->elts[elt].type, NULL, stream, 0);
fprintf_filtered (stream, ") ");
len = longest_to_int (exp->elts[elt + 1].longconst);
elem_name = &exp->elts[elt + 2].string;
fprintf_filtered (stream, "Field name: `%.*s'", len, elem_name);
elt += 4 + BYTES_TO_EXP_ELEM (len + 1);
}
break;
case OP_FUNC_STATIC_VAR:
{
int len = longest_to_int (exp->elts[elt].longconst);
const char *var_name = &exp->elts[elt + 1].string;
fprintf_filtered (stream, "Field name: `%.*s'", len, var_name);
elt += 3 + BYTES_TO_EXP_ELEM (len + 1);
}
break;
case TYPE_INSTANCE:
{
type_instance_flags flags
= (type_instance_flag_value) longest_to_int (exp->elts[elt++].longconst);
LONGEST len = exp->elts[elt++].longconst;
fprintf_filtered (stream, "%s TypeInstance: ", plongest (len));
while (len-- > 0)
{
fprintf_filtered (stream, "Type @");
gdb_print_host_address (exp->elts[elt].type, stream);
fprintf_filtered (stream, " (");
type_print (exp->elts[elt].type, NULL, stream, 0);
fprintf_filtered (stream, ")");
elt++;
if (len > 0)
fputs_filtered (", ", stream);
}
fprintf_filtered (stream, " Flags: %s (", hex_string (flags));
bool space = false;
auto print_one = [&] (const char *mod)
{
if (space)
fputs_filtered (" ", stream);
space = true;
fprintf_filtered (stream, "%s", mod);
};
if (flags & TYPE_INSTANCE_FLAG_CONST)
print_one ("const");
if (flags & TYPE_INSTANCE_FLAG_VOLATILE)
print_one ("volatile");
fprintf_filtered (stream, ")");
/* Ending LEN and ending TYPE_INSTANCE. */
elt += 2;
elt = dump_subexp (exp, stream, elt);
}
break;
case OP_STRING:
{
LONGEST len = exp->elts[elt].longconst;
LONGEST type = exp->elts[elt + 1].longconst;
fprintf_filtered (stream, "Language-specific string type: %s",
plongest (type));
/* Skip length. */
elt += 1;
/* Skip string content. */
elt += BYTES_TO_EXP_ELEM (len);
/* Skip length and ending OP_STRING. */
elt += 2;
}
break;
case OP_RANGE:
{
enum range_type range_type;
range_type = (enum range_type)
longest_to_int (exp->elts[elt].longconst);
elt += 2;
switch (range_type)
{
case BOTH_BOUND_DEFAULT:
fputs_filtered ("Range '..'", stream);
break;
case LOW_BOUND_DEFAULT:
fputs_filtered ("Range '..EXP'", stream);
break;
case LOW_BOUND_DEFAULT_EXCLUSIVE:
fputs_filtered ("ExclusiveRange '..EXP'", stream);
break;
case HIGH_BOUND_DEFAULT:
fputs_filtered ("Range 'EXP..'", stream);
break;
case NONE_BOUND_DEFAULT:
fputs_filtered ("Range 'EXP..EXP'", stream);
break;
case NONE_BOUND_DEFAULT_EXCLUSIVE:
fputs_filtered ("ExclusiveRange 'EXP..EXP'", stream);
break;
default:
fputs_filtered ("Invalid Range!", stream);
break;
}
if (range_type == HIGH_BOUND_DEFAULT
|| range_type == NONE_BOUND_DEFAULT)
elt = dump_subexp (exp, stream, elt);
if (range_type == LOW_BOUND_DEFAULT
|| range_type == NONE_BOUND_DEFAULT)
elt = dump_subexp (exp, stream, elt);
}
break;
default:
case OP_NULL:
case MULTI_SUBSCRIPT:
case OP_COMPLEX:
case OP_BOOL:
case OP_M2_STRING:
case OP_THIS:
case OP_NAME:
fprintf_filtered (stream, "Unknown format");
}
return elt;
}
void
dump_prefix_expression (struct expression *exp, struct ui_file *stream)
{
int elt;
fprintf_filtered (stream, "Dump of expression @ ");
gdb_print_host_address (exp, stream);
fputs_filtered (", after conversion to prefix form:\nExpression: `", stream);
print_expression (exp, stream);
fprintf_filtered (stream, "'\n\tLanguage %s, %d elements, %ld bytes each.\n",
exp->language_defn->la_name, exp->nelts,
(long) sizeof (union exp_element));
fputs_filtered ("\n", stream);
for (elt = 0; elt < exp->nelts;)
elt = dump_subexp (exp, stream, elt);
fputs_filtered ("\n", stream);
}
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