[deliverable/binutils-gdb.git] / gdb / expprint.c

/* Print in infix form a struct expression.
   Copyright (C) 1986, 1989 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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#include <stdio.h>
#include "defs.h"
#include "symtab.h"
#include "param.h"
#include "expression.h"
#include "value.h"

\f
/* These codes indicate operator precedences, least tightly binding first.  */
/* Adding 1 to a precedence value is done for binary operators,
   on the operand which is more tightly bound, so that operators
   of equal precedence within that operand will get parentheses.  */
/* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator;
   they are used as the "surrounding precedence" to force
   various kinds of things to be parenthesized.  */
enum precedence
{ PREC_NULL, PREC_COMMA, PREC_ABOVE_COMMA, PREC_ASSIGN, PREC_OR, PREC_AND,
  PREC_LOGIOR, PREC_LOGAND, PREC_LOGXOR, PREC_EQUAL, PREC_ORDER,
  PREC_SHIFT, PREC_ADD, PREC_MUL, PREC_REPEAT,
  PREC_HYPER, PREC_PREFIX, PREC_SUFFIX };

/* Table mapping opcodes into strings for printing operators
   and precedences of the operators.  */

struct op_print
{
  char *string;
  enum exp_opcode opcode;
  /* Precedence of operator.  These values are used only by comparisons.  */
  enum precedence precedence;
  int right_assoc;
};

const static struct op_print op_print_tab[] =
  {
    {",", BINOP_COMMA, PREC_COMMA, 0},
    {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
    {"||", BINOP_OR, PREC_OR, 0},
    {"&&", BINOP_AND, PREC_AND, 0},
    {"|", BINOP_LOGIOR, PREC_LOGIOR, 0},
    {"&", BINOP_LOGAND, PREC_LOGAND, 0},
    {"^", BINOP_LOGXOR, PREC_LOGXOR, 0},
    {"==", BINOP_EQUAL, PREC_EQUAL, 0},
    {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
    {"<=", BINOP_LEQ, PREC_ORDER, 0},
    {">=", BINOP_GEQ, PREC_ORDER, 0},
    {">", BINOP_GTR, PREC_ORDER, 0},
    {"<", BINOP_LESS, PREC_ORDER, 0},
    {">>", BINOP_RSH, PREC_SHIFT, 0},
    {"<<", BINOP_LSH, PREC_SHIFT, 0},
    {"+", BINOP_ADD, PREC_ADD, 0},
    {"-", BINOP_SUB, PREC_ADD, 0},
    {"*", BINOP_MUL, PREC_MUL, 0},
    {"/", BINOP_DIV, PREC_MUL, 0},
    {"%", BINOP_REM, PREC_MUL, 0},
    {"@", BINOP_REPEAT, PREC_REPEAT, 0},
    {"-", UNOP_NEG, PREC_PREFIX, 0},
    {"!", UNOP_ZEROP, PREC_PREFIX, 0},
    {"~", UNOP_LOGNOT, PREC_PREFIX, 0},
    {"*", UNOP_IND, PREC_PREFIX, 0},
    {"&", UNOP_ADDR, PREC_PREFIX, 0},
    {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
    {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
    {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
    /* C++  */
    {"::", BINOP_SCOPE, PREC_PREFIX, 0},
  };
\f
static void print_subexp ();

void
print_expression (exp, stream)
     struct expression *exp;
     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.  */

static void
print_subexp (exp, pos, stream, prec)
     register struct expression *exp;
     register int *pos;
     FILE *stream;
     enum precedence prec;
{
  register unsigned tem;
  register int pc;
  unsigned nargs;
  register char *op_str;
  int assign_modify = 0;
  enum exp_opcode opcode;
  enum precedence myprec;
  /* Set to 1 for a right-associative operator.  */
  int assoc;

  pc = (*pos)++;
  opcode = exp->elts[pc].opcode;
  switch (opcode)
    {
    case OP_SCOPE:
      myprec = PREC_PREFIX;
      assoc = 0;
      (*pos) += 2;
      print_subexp (exp, pos, stream,
		    (enum precedence) ((int) myprec + assoc));
      fputs_filtered (" :: ", stream);
      nargs = strlen (&exp->elts[pc + 2].string);
      (*pos) += 1 + (nargs + sizeof (union exp_element)) / sizeof (union exp_element);

      fputs_filtered (&exp->elts[pc + 2].string, stream);
      return;

    case OP_LONG:
      (*pos) += 3;
      value_print (value_from_long (exp->elts[pc + 1].type,
				    exp->elts[pc + 2].longconst),
		   stream, 0, Val_no_prettyprint);
      return;

    case OP_DOUBLE:
      (*pos) += 3;
      value_print (value_from_double (exp->elts[pc + 1].type,
				      exp->elts[pc + 2].doubleconst),
		   stream, 0, Val_no_prettyprint);
      return;

    case OP_VAR_VALUE:
      (*pos) += 2;
      fputs_filtered (SYMBOL_NAME (exp->elts[pc + 1].symbol), stream);
      return;

    case OP_LAST:
      (*pos) += 2;
      fprintf_filtered (stream, "$%d",
			longest_to_int (exp->elts[pc + 1].longconst));
      return;

    case OP_REGISTER:
      (*pos) += 2;
      fprintf_filtered (stream, "$%s",
	       longest_to_int (reg_names[exp->elts[pc + 1].longconst]));
      return;

    case OP_INTERNALVAR:
      (*pos) += 2;
      fprintf_filtered (stream, "$%s",
	       internalvar_name (exp->elts[pc + 1].internalvar));
      return;

    case OP_FUNCALL:
      (*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_STRING:
      nargs = strlen (&exp->elts[pc + 1].string);
      (*pos) += 2 + (nargs + sizeof (union exp_element)) / sizeof (union exp_element);
      fputs_filtered ("\"", stream);
      for (tem = 0; tem < nargs; tem++)
	printchar ((&exp->elts[pc + 1].string)[tem], stream, '"');
      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 STRUCTOP_STRUCT:
      tem = strlen (&exp->elts[pc + 1].string);
      (*pos) += 2 + (tem + sizeof (union exp_element)) / sizeof (union exp_element);
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered (".", stream);
      fputs_filtered (&exp->elts[pc + 1].string, stream);
      return;

    case STRUCTOP_PTR:
      tem = strlen (&exp->elts[pc + 1].string);
      (*pos) += 2 + (tem + sizeof (union exp_element)) / sizeof (union exp_element);
      print_subexp (exp, pos, stream, PREC_SUFFIX);
      fputs_filtered ("->", stream);
      fputs_filtered (&exp->elts[pc + 1].string, stream);
      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_MEMVAL:
      (*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 BINOP_ASSIGN_MODIFY:
      opcode = exp->elts[pc + 1].opcode;
      (*pos) += 2;
      myprec = PREC_ASSIGN;
      assoc = 1;
      assign_modify = 1;
      for (tem = 0; tem < sizeof op_print_tab / sizeof op_print_tab[0]; tem++)
	if (op_print_tab[tem].opcode == opcode)
	  {
	    op_str = op_print_tab[tem].string;
	    break;
	  }
      break;

    case OP_THIS:
      ++(*pos);
      fputs_filtered ("this", stream);
      return;

    default:
      for (tem = 0; tem < sizeof op_print_tab / sizeof op_print_tab[0]; 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 ((int) myprec < (int) prec)
    fputs_filtered ("(", stream);
  if ((int) opcode > (int) BINOP_END)
    {
      /* Unary prefix operator.  */
      fputs_filtered (op_str, stream);
      print_subexp (exp, pos, stream, PREC_PREFIX);
    }
  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);
}
Commit	Line	Data
bd5635a1 RP	1	/* Print in infix form a struct expression.
	2	Copyright (C) 1986, 1989 Free Software Foundation, Inc.
	3
	4	This file is part of GDB.
	5
10147c02	6	This program is free software; you can redistribute it and/or modify
bd5635a1	7	it under the terms of the GNU General Public License as published by
10147c02 JG	8	the Free Software Foundation; either version 2 of the License, or
10147c02 JG	9	(at your option) any later version.
bd5635a1	10
10147c02	11	This program is distributed in the hope that it will be useful,
bd5635a1 RP	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
10147c02 JG	17	along with this program; if not, write to the Free Software
10147c02 JG	18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
bd5635a1 RP	19
	20	#include <stdio.h>
	21	#include "defs.h"
	22	#include "symtab.h"
	23	#include "param.h"
	24	#include "expression.h"
	25	#include "value.h"
	26
	27	\f
	28	/* These codes indicate operator precedences, least tightly binding first. */
	29	/* Adding 1 to a precedence value is done for binary operators,
	30	on the operand which is more tightly bound, so that operators
	31	of equal precedence within that operand will get parentheses. */
	32	/* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator;
	33	they are used as the "surrounding precedence" to force
	34	various kinds of things to be parenthesized. */
	35	enum precedence
	36	{ PREC_NULL, PREC_COMMA, PREC_ABOVE_COMMA, PREC_ASSIGN, PREC_OR, PREC_AND,
	37	PREC_LOGIOR, PREC_LOGAND, PREC_LOGXOR, PREC_EQUAL, PREC_ORDER,
	38	PREC_SHIFT, PREC_ADD, PREC_MUL, PREC_REPEAT,
	39	PREC_HYPER, PREC_PREFIX, PREC_SUFFIX };
	40
	41	/* Table mapping opcodes into strings for printing operators
	42	and precedences of the operators. */
	43
	44	struct op_print
	45	{
	46	char *string;
	47	enum exp_opcode opcode;
	48	/* Precedence of operator. These values are used only by comparisons. */
	49	enum precedence precedence;
	50	int right_assoc;
	51	};
	52
81919cc8	53	const static struct op_print op_print_tab[] =
bd5635a1 RP	54	{
	55	{",", BINOP_COMMA, PREC_COMMA, 0},
	56	{"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
	57	{"\|\|", BINOP_OR, PREC_OR, 0},
	58	{"&&", BINOP_AND, PREC_AND, 0},
	59	{"\|", BINOP_LOGIOR, PREC_LOGIOR, 0},
	60	{"&", BINOP_LOGAND, PREC_LOGAND, 0},
	61	{"^", BINOP_LOGXOR, PREC_LOGXOR, 0},
	62	{"==", BINOP_EQUAL, PREC_EQUAL, 0},
	63	{"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
	64	{"<=", BINOP_LEQ, PREC_ORDER, 0},
	65	{">=", BINOP_GEQ, PREC_ORDER, 0},
	66	{">", BINOP_GTR, PREC_ORDER, 0},
	67	{"<", BINOP_LESS, PREC_ORDER, 0},
	68	{">>", BINOP_RSH, PREC_SHIFT, 0},
	69	{"<<", BINOP_LSH, PREC_SHIFT, 0},
	70	{"+", BINOP_ADD, PREC_ADD, 0},
	71	{"-", BINOP_SUB, PREC_ADD, 0},
	72	{"*", BINOP_MUL, PREC_MUL, 0},
	73	{"/", BINOP_DIV, PREC_MUL, 0},
	74	{"%", BINOP_REM, PREC_MUL, 0},
	75	{"@", BINOP_REPEAT, PREC_REPEAT, 0},
	76	{"-", UNOP_NEG, PREC_PREFIX, 0},
	77	{"!", UNOP_ZEROP, PREC_PREFIX, 0},
	78	{"~", UNOP_LOGNOT, PREC_PREFIX, 0},
	79	{"*", UNOP_IND, PREC_PREFIX, 0},
	80	{"&", UNOP_ADDR, PREC_PREFIX, 0},
	81	{"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0},
	82	{"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
	83	{"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
	84	/* C++ */
	85	{"::", BINOP_SCOPE, PREC_PREFIX, 0},
	86	};
	87	\f
	88	static void print_subexp ();
	89
	90	void
	91	print_expression (exp, stream)
	92	struct expression *exp;
	93	FILE *stream;
	94	{
	95	int pc = 0;
	96	print_subexp (exp, &pc, stream, PREC_NULL);
	97	}
	98
	99	/* Print the subexpression of EXP that starts in position POS, on STREAM.
	100	PREC is the precedence of the surrounding operator;
	101	if the precedence of the main operator of this subexpression is less,
	102	parentheses are needed here. */
	103
	104	static void
	105	print_subexp (exp, pos, stream, prec)
	106	register struct expression *exp;
	107	register int *pos;
	108	FILE *stream;
	109	enum precedence prec;
	110	{
	111	register unsigned tem;
	112	register int pc;
	113	unsigned nargs;
	114	register char *op_str;
	115	int assign_modify = 0;
	116	enum exp_opcode opcode;
	117	enum precedence myprec;
118	/* Set to 1 for a right-associative operator. */
119	int assoc;
120
121	pc = (*pos)++;
122	opcode = exp->elts[pc].opcode;
123	switch (opcode)
124	{
125	case OP_SCOPE:
126	myprec = PREC_PREFIX;
127	assoc = 0;
128	(*pos) += 2;
10147c02 JG	129	print_subexp (exp, pos, stream,
	130	(enum precedence) ((int) myprec + assoc));
	131	fputs_filtered (" :: ", stream);
bd5635a1 RP	132	nargs = strlen (&exp->elts[pc + 2].string);
	133	(*pos) += 1 + (nargs + sizeof (union exp_element)) / sizeof (union exp_element);
	134
10147c02	135	fputs_filtered (&exp->elts[pc + 2].string, stream);
bd5635a1 RP	136	return;
	137
	138	case OP_LONG:
	139	(*pos) += 3;
	140	value_print (value_from_long (exp->elts[pc + 1].type,
	141	exp->elts[pc + 2].longconst),
	142	stream, 0, Val_no_prettyprint);
	143	return;
	144
	145	case OP_DOUBLE:
	146	(*pos) += 3;
	147	value_print (value_from_double (exp->elts[pc + 1].type,
	148	exp->elts[pc + 2].doubleconst),
	149	stream, 0, Val_no_prettyprint);
	150	return;
	151
	152	case OP_VAR_VALUE:
	153	(*pos) += 2;
10147c02	154	fputs_filtered (SYMBOL_NAME (exp->elts[pc + 1].symbol), stream);
bd5635a1 RP	155	return;
	156
	157	case OP_LAST:
	158	(*pos) += 2;
10147c02 JG	159	fprintf_filtered (stream, "$%d",
10147c02 JG	160	longest_to_int (exp->elts[pc + 1].longconst));
bd5635a1 RP	161	return;
	162
	163	case OP_REGISTER:
	164	(*pos) += 2;
10147c02 JG	165	fprintf_filtered (stream, "$%s",
10147c02 JG	166	longest_to_int (reg_names[exp->elts[pc + 1].longconst]));
bd5635a1 RP	167	return;
	168
	169	case OP_INTERNALVAR:
	170	(*pos) += 2;
10147c02	171	fprintf_filtered (stream, "$%s",
bd5635a1 RP	172	internalvar_name (exp->elts[pc + 1].internalvar));
	173	return;
	174
	175	case OP_FUNCALL:
	176	(*pos) += 2;
10147c02	177	nargs = longest_to_int (exp->elts[pc + 1].longconst);
bd5635a1	178	print_subexp (exp, pos, stream, PREC_SUFFIX);
10147c02	179	fputs_filtered (" (", stream);
bd5635a1 RP	180	for (tem = 0; tem < nargs; tem++)
	181	{
	182	if (tem != 0)
10147c02	183	fputs_filtered (", ", stream);
bd5635a1 RP	184	print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
bd5635a1 RP	185	}
10147c02	186	fputs_filtered (")", stream);
bd5635a1 RP	187	return;
	188
	189	case OP_STRING:
	190	nargs = strlen (&exp->elts[pc + 1].string);
	191	(*pos) += 2 + (nargs + sizeof (union exp_element)) / sizeof (union exp_element);
10147c02	192	fputs_filtered ("\"", stream);
bd5635a1 RP	193	for (tem = 0; tem < nargs; tem++)
bd5635a1 RP	194	printchar ((&exp->elts[pc + 1].string)[tem], stream, '"');
10147c02	195	fputs_filtered ("\"", stream);
bd5635a1 RP	196	return;
	197
	198	case TERNOP_COND:
	199	if ((int) prec > (int) PREC_COMMA)
10147c02	200	fputs_filtered ("(", stream);
bd5635a1 RP	201	/* Print the subexpressions, forcing parentheses
	202	around any binary operations within them.
	203	This is more parentheses than are strictly necessary,
	204	but it looks clearer. */
	205	print_subexp (exp, pos, stream, PREC_HYPER);
10147c02	206	fputs_filtered (" ? ", stream);
bd5635a1	207	print_subexp (exp, pos, stream, PREC_HYPER);
10147c02	208	fputs_filtered (" : ", stream);
bd5635a1 RP	209	print_subexp (exp, pos, stream, PREC_HYPER);
bd5635a1 RP	210	if ((int) prec > (int) PREC_COMMA)
10147c02	211	fputs_filtered (")", stream);
bd5635a1 RP	212	return;
	213
	214	case STRUCTOP_STRUCT:
	215	tem = strlen (&exp->elts[pc + 1].string);
	216	(*pos) += 2 + (tem + sizeof (union exp_element)) / sizeof (union exp_element);
	217	print_subexp (exp, pos, stream, PREC_SUFFIX);
10147c02 JG	218	fputs_filtered (".", stream);
10147c02 JG	219	fputs_filtered (&exp->elts[pc + 1].string, stream);
bd5635a1 RP	220	return;
	221
	222	case STRUCTOP_PTR:
	223	tem = strlen (&exp->elts[pc + 1].string);
	224	(*pos) += 2 + (tem + sizeof (union exp_element)) / sizeof (union exp_element);
	225	print_subexp (exp, pos, stream, PREC_SUFFIX);
10147c02 JG	226	fputs_filtered ("->", stream);
10147c02 JG	227	fputs_filtered (&exp->elts[pc + 1].string, stream);
bd5635a1 RP	228	return;
	229
	230	case BINOP_SUBSCRIPT:
	231	print_subexp (exp, pos, stream, PREC_SUFFIX);
10147c02	232	fputs_filtered ("[", stream);
bd5635a1	233	print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
10147c02	234	fputs_filtered ("]", stream);
bd5635a1 RP	235	return;
	236
	237	case UNOP_POSTINCREMENT:
	238	print_subexp (exp, pos, stream, PREC_SUFFIX);
10147c02	239	fputs_filtered ("++", stream);
bd5635a1 RP	240	return;
	241
	242	case UNOP_POSTDECREMENT:
	243	print_subexp (exp, pos, stream, PREC_SUFFIX);
10147c02	244	fputs_filtered ("--", stream);
bd5635a1 RP	245	return;
	246
	247	case UNOP_CAST:
	248	(*pos) += 2;
	249	if ((int) prec > (int) PREC_PREFIX)
10147c02 JG	250	fputs_filtered ("(", stream);
10147c02 JG	251	fputs_filtered ("(", stream);
bd5635a1	252	type_print (exp->elts[pc + 1].type, "", stream, 0);
10147c02	253	fputs_filtered (") ", stream);
bd5635a1 RP	254	print_subexp (exp, pos, stream, PREC_PREFIX);
bd5635a1 RP	255	if ((int) prec > (int) PREC_PREFIX)
10147c02	256	fputs_filtered (")", stream);
bd5635a1 RP	257	return;
	258
	259	case UNOP_MEMVAL:
	260	(*pos) += 2;
	261	if ((int) prec > (int) PREC_PREFIX)
10147c02 JG	262	fputs_filtered ("(", stream);
10147c02 JG	263	fputs_filtered ("{", stream);
bd5635a1	264	type_print (exp->elts[pc + 1].type, "", stream, 0);
10147c02	265	fputs_filtered ("} ", stream);
bd5635a1 RP	266	print_subexp (exp, pos, stream, PREC_PREFIX);
bd5635a1 RP	267	if ((int) prec > (int) PREC_PREFIX)
10147c02	268	fputs_filtered (")", stream);
bd5635a1 RP	269	return;
	270
	271	case BINOP_ASSIGN_MODIFY:
	272	opcode = exp->elts[pc + 1].opcode;
	273	(*pos) += 2;
	274	myprec = PREC_ASSIGN;
	275	assoc = 1;
	276	assign_modify = 1;
	277	for (tem = 0; tem < sizeof op_print_tab / sizeof op_print_tab[0]; tem++)
	278	if (op_print_tab[tem].opcode == opcode)
	279	{
	280	op_str = op_print_tab[tem].string;
	281	break;
	282	}
81919cc8	283	break;
bd5635a1 RP	284
	285	case OP_THIS:
	286	++(*pos);
10147c02	287	fputs_filtered ("this", stream);
bd5635a1 RP	288	return;
	289
	290	default:
	291	for (tem = 0; tem < sizeof op_print_tab / sizeof op_print_tab[0]; tem++)
	292	if (op_print_tab[tem].opcode == opcode)
	293	{
	294	op_str = op_print_tab[tem].string;
	295	myprec = op_print_tab[tem].precedence;
	296	assoc = op_print_tab[tem].right_assoc;
	297	break;
	298	}
	299	}
	300
	301	if ((int) myprec < (int) prec)
10147c02	302	fputs_filtered ("(", stream);
bd5635a1 RP	303	if ((int) opcode > (int) BINOP_END)
	304	{
	305	/* Unary prefix operator. */
10147c02	306	fputs_filtered (op_str, stream);
bd5635a1 RP	307	print_subexp (exp, pos, stream, PREC_PREFIX);
	308	}
	309	else
	310	{
	311	/* Binary operator. */
	312	/* Print left operand.
	313	If operator is right-associative,
	314	increment precedence for this operand. */
10147c02 JG	315	print_subexp (exp, pos, stream,
10147c02 JG	316	(enum precedence) ((int) myprec + assoc));
bd5635a1 RP	317	/* Print the operator itself. */
bd5635a1 RP	318	if (assign_modify)
10147c02	319	fprintf_filtered (stream, " %s= ", op_str);
bd5635a1	320	else if (op_str[0] == ',')
10147c02	321	fprintf_filtered (stream, "%s ", op_str);
bd5635a1	322	else
10147c02	323	fprintf_filtered (stream, " %s ", op_str);
bd5635a1 RP	324	/* Print right operand.
	325	If operator is left-associative,
	326	increment precedence for this operand. */
10147c02 JG	327	print_subexp (exp, pos, stream,
10147c02 JG	328	(enum precedence) ((int) myprec + !assoc));
bd5635a1 RP	329	}
bd5635a1 RP	330	if ((int) myprec < (int) prec)
10147c02	331	fputs_filtered (")", stream);
bd5635a1	332	}