| /* Print in infix form a struct expression. | |
| Copyright (C) 1986-2018 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 <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_no_tag (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 | |
| && SYMBOL_PRINT_NAME (BLOCK_FUNCTION (b)) != NULL) | |
| { | |
| fputs_filtered (SYMBOL_PRINT_NAME (BLOCK_FUNCTION (b)), stream); | |
| fputs_filtered ("::", stream); | |
| } | |
| fputs_filtered (SYMBOL_PRINT_NAME (exp->elts[pc + 2].symbol), stream); | |
| } | |
| return; | |
| case OP_VAR_MSYM_VALUE: | |
| { | |
| (*pos) += 3; | |
| fputs_filtered (MSYMBOL_PRINT_NAME (exp->elts[pc + 2].msymbol), 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", | |
| SYMBOL_PRINT_NAME (exp->elts[pc + 1].symbol)); | |
| } | |
| 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. */ | |
| 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 = (char *) alloca (strlen (selector) + 1); | |
| strcpy (s, selector); | |
| 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); | |
| } | |
| fprintf_unfiltered (stream, "]"); | |
| /* "selector" was malloc'd by target_read_string. Free it. */ | |
| xfree (selector); | |
| 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_filtered (stream, _("<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; | |
| fputs_filtered ("RANGE(", stream); | |
| if (range_type == HIGH_BOUND_DEFAULT | |
| || range_type == NONE_BOUND_DEFAULT) | |
| 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) | |
| { | |
| 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_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)", | |
| SYMBOL_PRINT_NAME (exp->elts[elt + 1].symbol)); | |
| 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)", | |
| MSYMBOL_PRINT_NAME (exp->elts[elt + 1].msymbol)); | |
| 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)", | |
| SYMBOL_PRINT_NAME (exp->elts[elt].symbol)); | |
| 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 HIGH_BOUND_DEFAULT: | |
| fputs_filtered ("Range 'EXP..'", stream); | |
| break; | |
| case NONE_BOUND_DEFAULT: | |
| fputs_filtered ("Range '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); | |
| } |