[deliverable/binutils-gdb.git] / gdb / p-lang.c

/* Pascal language support routines for GDB, the GNU debugger.

   Copyright (C) 2000-2013 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/>.  */

/* This file is derived from c-lang.c */

#include "defs.h"
#include "gdb_string.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
#include "p-lang.h"
#include "valprint.h"
#include "value.h"
#include <ctype.h>

extern void _initialize_pascal_language (void);


/* All GPC versions until now (2007-09-27) also define a symbol called
   '_p_initialize'.  Check for the presence of this symbol first.  */
static const char GPC_P_INITIALIZE[] = "_p_initialize";

/* The name of the symbol that GPC uses as the name of the main
   procedure (since version 20050212).  */
static const char GPC_MAIN_PROGRAM_NAME_1[] = "_p__M0_main_program";

/* Older versions of GPC (versions older than 20050212) were using
   a different name for the main procedure.  */
static const char GPC_MAIN_PROGRAM_NAME_2[] = "pascal_main_program";

/* Function returning the special symbol name used
   by GPC for the main procedure in the main program
   if it is found in minimal symbol list.
   This function tries to find minimal symbols generated by GPC
   so that it finds the even if the program was compiled
   without debugging information.
   According to information supplied by Waldeck Hebisch,
   this should work for all versions posterior to June 2000.  */

const char *
pascal_main_name (void)
{
  struct minimal_symbol *msym;

  msym = lookup_minimal_symbol (GPC_P_INITIALIZE, NULL, NULL);

  /*  If '_p_initialize' was not found, the main program is likely not
     written in Pascal.  */
  if (msym == NULL)
    return NULL;

  msym = lookup_minimal_symbol (GPC_MAIN_PROGRAM_NAME_1, NULL, NULL);
  if (msym != NULL)
    {
      return GPC_MAIN_PROGRAM_NAME_1;
    }

  msym = lookup_minimal_symbol (GPC_MAIN_PROGRAM_NAME_2, NULL, NULL);
  if (msym != NULL)
    {
      return GPC_MAIN_PROGRAM_NAME_2;
    }

  /*  No known entry procedure found, the main program is probably
      not compiled with GPC.  */
  return NULL;
}

/* Determines if type TYPE is a pascal string type.
   Returns a positive value if the type is a known pascal string type.
   This function is used by p-valprint.c code to allow better string display.
   If it is a pascal string type, then it also sets info needed
   to get the length and the data of the string
   length_pos, length_size and string_pos are given in bytes.
   char_size gives the element size in bytes.
   FIXME: if the position or the size of these fields
   are not multiple of TARGET_CHAR_BIT then the results are wrong
   but this does not happen for Free Pascal nor for GPC.  */
int
is_pascal_string_type (struct type *type,int *length_pos,
                       int *length_size, int *string_pos,
		       struct type **char_type,
		       const char **arrayname)
{
  if (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT)
    {
      /* Old Borland type pascal strings from Free Pascal Compiler.  */
      /* Two fields: length and st.  */
      if (TYPE_NFIELDS (type) == 2
	  && TYPE_FIELD_NAME (type, 0)
	  && strcmp (TYPE_FIELD_NAME (type, 0), "length") == 0
	  && TYPE_FIELD_NAME (type, 1)
	  && strcmp (TYPE_FIELD_NAME (type, 1), "st") == 0)
        {
          if (length_pos)
	    *length_pos = TYPE_FIELD_BITPOS (type, 0) / TARGET_CHAR_BIT;
          if (length_size)
	    *length_size = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0));
          if (string_pos)
	    *string_pos = TYPE_FIELD_BITPOS (type, 1) / TARGET_CHAR_BIT;
          if (char_type)
	    *char_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 1));
 	  if (arrayname)
	    *arrayname = TYPE_FIELD_NAME (type, 1);
         return 2;
        };
      /* GNU pascal strings.  */
      /* Three fields: Capacity, length and schema$ or _p_schema.  */
      if (TYPE_NFIELDS (type) == 3
	  && TYPE_FIELD_NAME (type, 0)
	  && strcmp (TYPE_FIELD_NAME (type, 0), "Capacity") == 0
	  && TYPE_FIELD_NAME (type, 1)
	  && strcmp (TYPE_FIELD_NAME (type, 1), "length") == 0)
        {
	  if (length_pos)
	    *length_pos = TYPE_FIELD_BITPOS (type, 1) / TARGET_CHAR_BIT;
	  if (length_size)
	    *length_size = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 1));
	  if (string_pos)
	    *string_pos = TYPE_FIELD_BITPOS (type, 2) / TARGET_CHAR_BIT;
          /* FIXME: how can I detect wide chars in GPC ??  */
          if (char_type)
	    {
	      *char_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 2));

	      if (TYPE_CODE (*char_type) == TYPE_CODE_ARRAY)
		*char_type = TYPE_TARGET_TYPE (*char_type);
	    }
 	  if (arrayname)
	    *arrayname = TYPE_FIELD_NAME (type, 2);
         return 3;
        };
    }
  return 0;
}

static void pascal_one_char (int, struct ui_file *, int *);

/* Print the character C on STREAM as part of the contents of a literal
   string.
   In_quotes is reset to 0 if a char is written with #4 notation.  */

static void
pascal_one_char (int c, struct ui_file *stream, int *in_quotes)
{
  if (c == '\'' || ((unsigned int) c <= 0xff && (PRINT_LITERAL_FORM (c))))
    {
      if (!(*in_quotes))
	fputs_filtered ("'", stream);
      *in_quotes = 1;
      if (c == '\'')
	{
	  fputs_filtered ("''", stream);
	}
      else
	fprintf_filtered (stream, "%c", c);
    }
  else
    {
      if (*in_quotes)
	fputs_filtered ("'", stream);
      *in_quotes = 0;
      fprintf_filtered (stream, "#%d", (unsigned int) c);
    }
}

static void pascal_emit_char (int c, struct type *type,
			      struct ui_file *stream, int quoter);

/* Print the character C on STREAM as part of the contents of a literal
   string whose delimiter is QUOTER.  Note that that format for printing
   characters and strings is language specific.  */

static void
pascal_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
{
  int in_quotes = 0;

  pascal_one_char (c, stream, &in_quotes);
  if (in_quotes)
    fputs_filtered ("'", stream);
}

void
pascal_printchar (int c, struct type *type, struct ui_file *stream)
{
  int in_quotes = 0;

  pascal_one_char (c, stream, &in_quotes);
  if (in_quotes)
    fputs_filtered ("'", stream);
}

/* Print the character string STRING, printing at most LENGTH characters.
   Printing stops early if the number hits print_max; repeat counts
   are printed as appropriate.  Print ellipses at the end if we
   had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.  */

void
pascal_printstr (struct ui_file *stream, struct type *type,
		 const gdb_byte *string, unsigned int length,
		 const char *encoding, int force_ellipses,
		 const struct value_print_options *options)
{
  enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
  unsigned int i;
  unsigned int things_printed = 0;
  int in_quotes = 0;
  int need_comma = 0;
  int width;

  /* Preserve TYPE's original type, just set its LENGTH.  */
  check_typedef (type);
  width = TYPE_LENGTH (type);

  /* If the string was not truncated due to `set print elements', and
     the last byte of it is a null, we don't print that, in traditional C
     style.  */
  if ((!force_ellipses) && length > 0
	&& extract_unsigned_integer (string + (length - 1) * width, width,
				     byte_order) == 0)
    length--;

  if (length == 0)
    {
      fputs_filtered ("''", stream);
      return;
    }

  for (i = 0; i < length && things_printed < options->print_max; ++i)
    {
      /* Position of the character we are examining
         to see whether it is repeated.  */
      unsigned int rep1;
      /* Number of repetitions we have detected so far.  */
      unsigned int reps;
      unsigned long int current_char;

      QUIT;

      if (need_comma)
	{
	  fputs_filtered (", ", stream);
	  need_comma = 0;
	}

      current_char = extract_unsigned_integer (string + i * width, width,
					       byte_order);

      rep1 = i + 1;
      reps = 1;
      while (rep1 < length
	     && extract_unsigned_integer (string + rep1 * width, width,
					  byte_order) == current_char)
	{
	  ++rep1;
	  ++reps;
	}

      if (reps > options->repeat_count_threshold)
	{
	  if (in_quotes)
	    {
	      if (options->inspect_it)
		fputs_filtered ("\\', ", stream);
	      else
		fputs_filtered ("', ", stream);
	      in_quotes = 0;
	    }
	  pascal_printchar (current_char, type, stream);
	  fprintf_filtered (stream, " <repeats %u times>", reps);
	  i = rep1 - 1;
	  things_printed += options->repeat_count_threshold;
	  need_comma = 1;
	}
      else
	{
	  if ((!in_quotes) && (PRINT_LITERAL_FORM (current_char)))
	    {
	      if (options->inspect_it)
		fputs_filtered ("\\'", stream);
	      else
		fputs_filtered ("'", stream);
	      in_quotes = 1;
	    }
	  pascal_one_char (current_char, stream, &in_quotes);
	  ++things_printed;
	}
    }

  /* Terminate the quotes if necessary.  */
  if (in_quotes)
    {
      if (options->inspect_it)
	fputs_filtered ("\\'", stream);
      else
	fputs_filtered ("'", stream);
    }

  if (force_ellipses || i < length)
    fputs_filtered ("...", stream);
}
\f

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

const struct op_print pascal_op_print_tab[] =
{
  {",", BINOP_COMMA, PREC_COMMA, 0},
  {":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
  {"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
  {"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
  {"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 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},
  {"shr", BINOP_RSH, PREC_SHIFT, 0},
  {"shl", 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},
  {"div", BINOP_INTDIV, PREC_MUL, 0},
  {"mod", BINOP_REM, PREC_MUL, 0},
  {"@", BINOP_REPEAT, PREC_REPEAT, 0},
  {"-", UNOP_NEG, PREC_PREFIX, 0},
  {"not", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
  {"^", UNOP_IND, PREC_SUFFIX, 1},
  {"@", UNOP_ADDR, PREC_PREFIX, 0},
  {"sizeof", UNOP_SIZEOF, PREC_PREFIX, 0},
  {NULL, 0, 0, 0}
};
\f
enum pascal_primitive_types {
  pascal_primitive_type_int,
  pascal_primitive_type_long,
  pascal_primitive_type_short,
  pascal_primitive_type_char,
  pascal_primitive_type_float,
  pascal_primitive_type_double,
  pascal_primitive_type_void,
  pascal_primitive_type_long_long,
  pascal_primitive_type_signed_char,
  pascal_primitive_type_unsigned_char,
  pascal_primitive_type_unsigned_short,
  pascal_primitive_type_unsigned_int,
  pascal_primitive_type_unsigned_long,
  pascal_primitive_type_unsigned_long_long,
  pascal_primitive_type_long_double,
  pascal_primitive_type_complex,
  pascal_primitive_type_double_complex,
  nr_pascal_primitive_types
};

static void
pascal_language_arch_info (struct gdbarch *gdbarch,
			   struct language_arch_info *lai)
{
  const struct builtin_type *builtin = builtin_type (gdbarch);

  lai->string_char_type = builtin->builtin_char;
  lai->primitive_type_vector
    = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_pascal_primitive_types + 1,
                              struct type *);
  lai->primitive_type_vector [pascal_primitive_type_int]
    = builtin->builtin_int;
  lai->primitive_type_vector [pascal_primitive_type_long]
    = builtin->builtin_long;
  lai->primitive_type_vector [pascal_primitive_type_short]
    = builtin->builtin_short;
  lai->primitive_type_vector [pascal_primitive_type_char]
    = builtin->builtin_char;
  lai->primitive_type_vector [pascal_primitive_type_float]
    = builtin->builtin_float;
  lai->primitive_type_vector [pascal_primitive_type_double]
    = builtin->builtin_double;
  lai->primitive_type_vector [pascal_primitive_type_void]
    = builtin->builtin_void;
  lai->primitive_type_vector [pascal_primitive_type_long_long]
    = builtin->builtin_long_long;
  lai->primitive_type_vector [pascal_primitive_type_signed_char]
    = builtin->builtin_signed_char;
  lai->primitive_type_vector [pascal_primitive_type_unsigned_char]
    = builtin->builtin_unsigned_char;
  lai->primitive_type_vector [pascal_primitive_type_unsigned_short]
    = builtin->builtin_unsigned_short;
  lai->primitive_type_vector [pascal_primitive_type_unsigned_int]
    = builtin->builtin_unsigned_int;
  lai->primitive_type_vector [pascal_primitive_type_unsigned_long]
    = builtin->builtin_unsigned_long;
  lai->primitive_type_vector [pascal_primitive_type_unsigned_long_long]
    = builtin->builtin_unsigned_long_long;
  lai->primitive_type_vector [pascal_primitive_type_long_double]
    = builtin->builtin_long_double;
  lai->primitive_type_vector [pascal_primitive_type_complex]
    = builtin->builtin_complex;
  lai->primitive_type_vector [pascal_primitive_type_double_complex]
    = builtin->builtin_double_complex;

  lai->bool_type_symbol = "boolean";
  lai->bool_type_default = builtin->builtin_bool;
}

const struct language_defn pascal_language_defn =
{
  "pascal",			/* Language name */
  language_pascal,
  range_check_on,
  case_sensitive_on,
  array_row_major,
  macro_expansion_no,
  &exp_descriptor_standard,
  pascal_parse,
  pascal_error,
  null_post_parser,
  pascal_printchar,		/* Print a character constant */
  pascal_printstr,		/* Function to print string constant */
  pascal_emit_char,		/* Print a single char */
  pascal_print_type,		/* Print a type using appropriate syntax */
  pascal_print_typedef,		/* Print a typedef using appropriate syntax */
  pascal_val_print,		/* Print a value using appropriate syntax */
  pascal_value_print,		/* Print a top-level value */
  default_read_var_value,	/* la_read_var_value */
  NULL,				/* Language specific skip_trampoline */
  "this",		        /* name_of_this */
  basic_lookup_symbol_nonlocal,	/* lookup_symbol_nonlocal */
  basic_lookup_transparent_type,/* lookup_transparent_type */
  NULL,				/* Language specific symbol demangler */
  NULL,				/* Language specific class_name_from_physname */
  pascal_op_print_tab,		/* expression operators for printing */
  1,				/* c-style arrays */
  0,				/* String lower bound */
  default_word_break_characters,
  default_make_symbol_completion_list,
  pascal_language_arch_info,
  default_print_array_index,
  default_pass_by_reference,
  default_get_string,
  NULL,				/* la_get_symbol_name_cmp */
  iterate_over_symbols,
  LANG_MAGIC
};

void
_initialize_pascal_language (void)
{
  add_language (&pascal_language_defn);
}
Commit	Line	Data
373a8247	1	/* Pascal language support routines for GDB, the GNU debugger.
ce27fb25	2
28e7fd62	3	Copyright (C) 2000-2013 Free Software Foundation, Inc.
373a8247 PM	4
	5	This file is part of GDB.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
a9762ec7	9	the Free Software Foundation; either version 3 of the License, or
373a8247 PM	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
a9762ec7	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
373a8247	19
5598ce11	20	/* This file is derived from c-lang.c */
373a8247 PM	21
373a8247 PM	22	#include "defs.h"
309367d4	23	#include "gdb_string.h"
373a8247 PM	24	#include "symtab.h"
	25	#include "gdbtypes.h"
	26	#include "expression.h"
	27	#include "parser-defs.h"
	28	#include "language.h"
	29	#include "p-lang.h"
	30	#include "valprint.h"
5f9a71c3	31	#include "value.h"
5598ce11	32	#include <ctype.h>
6ced1581	33
373a8247	34	extern void _initialize_pascal_language (void);
5598ce11 PM	35
5598ce11 PM	36
cd6c7346	37	/* All GPC versions until now (2007-09-27) also define a symbol called
0df8b418	38	'_p_initialize'. Check for the presence of this symbol first. */
cd6c7346 PM	39	static const char GPC_P_INITIALIZE[] = "_p_initialize";
	40
	41	/* The name of the symbol that GPC uses as the name of the main
	42	procedure (since version 20050212). */
	43	static const char GPC_MAIN_PROGRAM_NAME_1[] = "_p__M0_main_program";
	44
	45	/* Older versions of GPC (versions older than 20050212) were using
	46	a different name for the main procedure. */
	47	static const char GPC_MAIN_PROGRAM_NAME_2[] = "pascal_main_program";
	48
	49	/* Function returning the special symbol name used
	50	by GPC for the main procedure in the main program
	51	if it is found in minimal symbol list.
	52	This function tries to find minimal symbols generated by GPC
	53	so that it finds the even if the program was compiled
	54	without debugging information.
	55	According to information supplied by Waldeck Hebisch,
0df8b418	56	this should work for all versions posterior to June 2000. */
cd6c7346 PM	57
	58	const char *
	59	pascal_main_name (void)
	60	{
	61	struct minimal_symbol *msym;
	62
	63	msym = lookup_minimal_symbol (GPC_P_INITIALIZE, NULL, NULL);
	64
	65	/* If '_p_initialize' was not found, the main program is likely not
	66	written in Pascal. */
	67	if (msym == NULL)
	68	return NULL;
	69
	70	msym = lookup_minimal_symbol (GPC_MAIN_PROGRAM_NAME_1, NULL, NULL);
	71	if (msym != NULL)
	72	{
	73	return GPC_MAIN_PROGRAM_NAME_1;
	74	}
	75
	76	msym = lookup_minimal_symbol (GPC_MAIN_PROGRAM_NAME_2, NULL, NULL);
	77	if (msym != NULL)
	78	{
	79	return GPC_MAIN_PROGRAM_NAME_2;
	80	}
	81
	82	/* No known entry procedure found, the main program is probably
	83	not compiled with GPC. */
	84	return NULL;
	85	}
	86
5598ce11	87	/* Determines if type TYPE is a pascal string type.
58159490	88	Returns a positive value if the type is a known pascal string type.
5598ce11 PM	89	This function is used by p-valprint.c code to allow better string display.
	90	If it is a pascal string type, then it also sets info needed
	91	to get the length and the data of the string
	92	length_pos, length_size and string_pos are given in bytes.
	93	char_size gives the element size in bytes.
	94	FIXME: if the position or the size of these fields
	95	are not multiple of TARGET_CHAR_BIT then the results are wrong
	96	but this does not happen for Free Pascal nor for GPC. */
	97	int
	98	is_pascal_string_type (struct type type,int length_pos,
6c7a06a3 TT	99	int length_size, int string_pos,
6c7a06a3 TT	100	struct type **char_type,
0d5cff50	101	const char **arrayname)
5598ce11	102	{
e13eedd5	103	if (type != NULL && TYPE_CODE (type) == TYPE_CODE_STRUCT)
5598ce11 PM	104	{
	105	/* Old Borland type pascal strings from Free Pascal Compiler. */
	106	/* Two fields: length and st. */
5c3da5ea	107	if (TYPE_NFIELDS (type) == 2
dae71413	108	&& TYPE_FIELD_NAME (type, 0)
6ced1581	109	&& strcmp (TYPE_FIELD_NAME (type, 0), "length") == 0
dae71413 PM	110	&& TYPE_FIELD_NAME (type, 1)
dae71413 PM	111	&& strcmp (TYPE_FIELD_NAME (type, 1), "st") == 0)
5598ce11	112	{
e2625b33 PM	113	if (length_pos)
	114	*length_pos = TYPE_FIELD_BITPOS (type, 0) / TARGET_CHAR_BIT;
	115	if (length_size)
0004e5a2	116	*length_size = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0));
e2625b33 PM	117	if (string_pos)
e2625b33 PM	118	*string_pos = TYPE_FIELD_BITPOS (type, 1) / TARGET_CHAR_BIT;
6c7a06a3 TT	119	if (char_type)
6c7a06a3 TT	120	*char_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 1));
e2625b33	121	if (arrayname)
dae71413	122	*arrayname = TYPE_FIELD_NAME (type, 1);
e2625b33	123	return 2;
5598ce11 PM	124	};
	125	/* GNU pascal strings. */
	126	/* Three fields: Capacity, length and schema$ or _p_schema. */
	127	if (TYPE_NFIELDS (type) == 3
dae71413 PM	128	&& TYPE_FIELD_NAME (type, 0)
	129	&& strcmp (TYPE_FIELD_NAME (type, 0), "Capacity") == 0
	130	&& TYPE_FIELD_NAME (type, 1)
	131	&& strcmp (TYPE_FIELD_NAME (type, 1), "length") == 0)
5598ce11	132	{
58159490	133	if (length_pos)
e2625b33	134	*length_pos = TYPE_FIELD_BITPOS (type, 1) / TARGET_CHAR_BIT;
58159490	135	if (length_size)
0004e5a2	136	*length_size = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 1));
58159490	137	if (string_pos)
e2625b33	138	*string_pos = TYPE_FIELD_BITPOS (type, 2) / TARGET_CHAR_BIT;
0df8b418	139	/* FIXME: how can I detect wide chars in GPC ?? */
6c7a06a3	140	if (char_type)
58159490	141	{
6c7a06a3	142	*char_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 2));
ad3bbd48	143
6c7a06a3 TT	144	if (TYPE_CODE (*char_type) == TYPE_CODE_ARRAY)
6c7a06a3 TT	145	char_type = TYPE_TARGET_TYPE (char_type);
58159490	146	}
e2625b33	147	if (arrayname)
dae71413	148	*arrayname = TYPE_FIELD_NAME (type, 2);
e2625b33	149	return 3;
5598ce11 PM	150	};
	151	}
	152	return 0;
	153	}
	154
373a8247 PM	155	static void pascal_one_char (int, struct ui_file , int );
	156
	157	/* Print the character C on STREAM as part of the contents of a literal
	158	string.
0df8b418	159	In_quotes is reset to 0 if a char is written with #4 notation. */
373a8247 PM	160
373a8247 PM	161	static void
f86f5ca3	162	pascal_one_char (int c, struct ui_file stream, int in_quotes)
373a8247	163	{
9b79b476	164	if (c == '\'' \|\| ((unsigned int) c <= 0xff && (PRINT_LITERAL_FORM (c))))
373a8247 PM	165	{
	166	if (!(*in_quotes))
	167	fputs_filtered ("'", stream);
	168	*in_quotes = 1;
	169	if (c == '\'')
	170	{
	171	fputs_filtered ("''", stream);
	172	}
	173	else
	174	fprintf_filtered (stream, "%c", c);
	175	}
	176	else
	177	{
	178	if (*in_quotes)
	179	fputs_filtered ("'", stream);
	180	*in_quotes = 0;
	181	fprintf_filtered (stream, "#%d", (unsigned int) c);
	182	}
	183	}
	184
6c7a06a3 TT	185	static void pascal_emit_char (int c, struct type *type,
6c7a06a3 TT	186	struct ui_file *stream, int quoter);
373a8247 PM	187
	188	/* Print the character C on STREAM as part of the contents of a literal
	189	string whose delimiter is QUOTER. Note that that format for printing
0df8b418	190	characters and strings is language specific. */
373a8247 PM	191
373a8247 PM	192	static void
6c7a06a3	193	pascal_emit_char (int c, struct type type, struct ui_file stream, int quoter)
373a8247 PM	194	{
373a8247 PM	195	int in_quotes = 0;
ad3bbd48	196
373a8247 PM	197	pascal_one_char (c, stream, &in_quotes);
	198	if (in_quotes)
	199	fputs_filtered ("'", stream);
	200	}
	201
	202	void
6c7a06a3	203	pascal_printchar (int c, struct type type, struct ui_file stream)
373a8247 PM	204	{
373a8247 PM	205	int in_quotes = 0;
ad3bbd48	206
373a8247 PM	207	pascal_one_char (c, stream, &in_quotes);
	208	if (in_quotes)
	209	fputs_filtered ("'", stream);
	210	}
	211
	212	/* Print the character string STRING, printing at most LENGTH characters.
	213	Printing stops early if the number hits print_max; repeat counts
	214	are printed as appropriate. Print ellipses at the end if we
	215	had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. */
	216
	217	void
6c7a06a3 TT	218	pascal_printstr (struct ui_file stream, struct type type,
6c7a06a3 TT	219	const gdb_byte *string, unsigned int length,
be759fcf	220	const char *encoding, int force_ellipses,
79a45b7d	221	const struct value_print_options *options)
373a8247	222	{
e17a4113	223	enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
f86f5ca3	224	unsigned int i;
373a8247 PM	225	unsigned int things_printed = 0;
	226	int in_quotes = 0;
	227	int need_comma = 0;
953ac07e JK	228	int width;
	229
	230	/* Preserve TYPE's original type, just set its LENGTH. */
	231	check_typedef (type);
	232	width = TYPE_LENGTH (type);
373a8247 PM	233
	234	/* If the string was not truncated due to `set print elements', and
	235	the last byte of it is a null, we don't print that, in traditional C
	236	style. */
58159490	237	if ((!force_ellipses) && length > 0
e17a4113 UW	238	&& extract_unsigned_integer (string + (length - 1) * width, width,
e17a4113 UW	239	byte_order) == 0)
373a8247 PM	240	length--;
	241
	242	if (length == 0)
	243	{
	244	fputs_filtered ("''", stream);
	245	return;
	246	}
	247
79a45b7d	248	for (i = 0; i < length && things_printed < options->print_max; ++i)
373a8247 PM	249	{
	250	/* Position of the character we are examining
	251	to see whether it is repeated. */
	252	unsigned int rep1;
	253	/* Number of repetitions we have detected so far. */
	254	unsigned int reps;
58159490	255	unsigned long int current_char;
373a8247 PM	256
	257	QUIT;
	258
	259	if (need_comma)
	260	{
	261	fputs_filtered (", ", stream);
	262	need_comma = 0;
	263	}
	264
e17a4113 UW	265	current_char = extract_unsigned_integer (string + i * width, width,
e17a4113 UW	266	byte_order);
58159490	267
373a8247 PM	268	rep1 = i + 1;
373a8247 PM	269	reps = 1;
6ced1581	270	while (rep1 < length
e17a4113 UW	271	&& extract_unsigned_integer (string + rep1 * width, width,
e17a4113 UW	272	byte_order) == current_char)
373a8247 PM	273	{
	274	++rep1;
	275	++reps;
	276	}
	277
79a45b7d	278	if (reps > options->repeat_count_threshold)
373a8247 PM	279	{
	280	if (in_quotes)
	281	{
79a45b7d	282	if (options->inspect_it)
373a8247 PM	283	fputs_filtered ("\\', ", stream);
	284	else
	285	fputs_filtered ("', ", stream);
	286	in_quotes = 0;
	287	}
6c7a06a3	288	pascal_printchar (current_char, type, stream);
373a8247 PM	289	fprintf_filtered (stream, " <repeats %u times>", reps);
373a8247 PM	290	i = rep1 - 1;
79a45b7d	291	things_printed += options->repeat_count_threshold;
373a8247 PM	292	need_comma = 1;
	293	}
	294	else
	295	{
58159490	296	if ((!in_quotes) && (PRINT_LITERAL_FORM (current_char)))
373a8247	297	{
79a45b7d	298	if (options->inspect_it)
373a8247 PM	299	fputs_filtered ("\\'", stream);
	300	else
	301	fputs_filtered ("'", stream);
	302	in_quotes = 1;
	303	}
58159490	304	pascal_one_char (current_char, stream, &in_quotes);
373a8247 PM	305	++things_printed;
	306	}
	307	}
	308
	309	/* Terminate the quotes if necessary. */
	310	if (in_quotes)
	311	{
79a45b7d	312	if (options->inspect_it)
373a8247 PM	313	fputs_filtered ("\\'", stream);
	314	else
	315	fputs_filtered ("'", stream);
	316	}
	317
	318	if (force_ellipses \|\| i < length)
	319	fputs_filtered ("...", stream);
	320	}
373a8247 PM	321	\f
	322
	323	/* Table mapping opcodes into strings for printing operators
	324	and precedences of the operators. */
	325
	326	const struct op_print pascal_op_print_tab[] =
	327	{
	328	{",", BINOP_COMMA, PREC_COMMA, 0},
	329	{":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
	330	{"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
	331	{"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
	332	{"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
	333	{"=", BINOP_EQUAL, PREC_EQUAL, 0},
	334	{"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
	335	{"<=", BINOP_LEQ, PREC_ORDER, 0},
	336	{">=", BINOP_GEQ, PREC_ORDER, 0},
	337	{">", BINOP_GTR, PREC_ORDER, 0},
	338	{"<", BINOP_LESS, PREC_ORDER, 0},
	339	{"shr", BINOP_RSH, PREC_SHIFT, 0},
	340	{"shl", BINOP_LSH, PREC_SHIFT, 0},
	341	{"+", BINOP_ADD, PREC_ADD, 0},
	342	{"-", BINOP_SUB, PREC_ADD, 0},
	343	{"*", BINOP_MUL, PREC_MUL, 0},
	344	{"/", BINOP_DIV, PREC_MUL, 0},
	345	{"div", BINOP_INTDIV, PREC_MUL, 0},
	346	{"mod", BINOP_REM, PREC_MUL, 0},
	347	{"@", BINOP_REPEAT, PREC_REPEAT, 0},
	348	{"-", UNOP_NEG, PREC_PREFIX, 0},
	349	{"not", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
	350	{"^", UNOP_IND, PREC_SUFFIX, 1},
	351	{"@", UNOP_ADDR, PREC_PREFIX, 0},
	352	{"sizeof", UNOP_SIZEOF, PREC_PREFIX, 0},
	353	{NULL, 0, 0, 0}
	354	};
	355	\f
cad351d1 UW	356	enum pascal_primitive_types {
	357	pascal_primitive_type_int,
	358	pascal_primitive_type_long,
	359	pascal_primitive_type_short,
	360	pascal_primitive_type_char,
	361	pascal_primitive_type_float,
	362	pascal_primitive_type_double,
	363	pascal_primitive_type_void,
	364	pascal_primitive_type_long_long,
	365	pascal_primitive_type_signed_char,
	366	pascal_primitive_type_unsigned_char,
	367	pascal_primitive_type_unsigned_short,
	368	pascal_primitive_type_unsigned_int,
	369	pascal_primitive_type_unsigned_long,
	370	pascal_primitive_type_unsigned_long_long,
	371	pascal_primitive_type_long_double,
	372	pascal_primitive_type_complex,
	373	pascal_primitive_type_double_complex,
	374	nr_pascal_primitive_types
373a8247 PM	375	};
373a8247 PM	376
cad351d1 UW	377	static void
	378	pascal_language_arch_info (struct gdbarch *gdbarch,
	379	struct language_arch_info *lai)
	380	{
	381	const struct builtin_type *builtin = builtin_type (gdbarch);
ad3bbd48	382
cad351d1 UW	383	lai->string_char_type = builtin->builtin_char;
	384	lai->primitive_type_vector
	385	= GDBARCH_OBSTACK_CALLOC (gdbarch, nr_pascal_primitive_types + 1,
	386	struct type *);
	387	lai->primitive_type_vector [pascal_primitive_type_int]
	388	= builtin->builtin_int;
	389	lai->primitive_type_vector [pascal_primitive_type_long]
	390	= builtin->builtin_long;
	391	lai->primitive_type_vector [pascal_primitive_type_short]
	392	= builtin->builtin_short;
	393	lai->primitive_type_vector [pascal_primitive_type_char]
	394	= builtin->builtin_char;
	395	lai->primitive_type_vector [pascal_primitive_type_float]
	396	= builtin->builtin_float;
	397	lai->primitive_type_vector [pascal_primitive_type_double]
	398	= builtin->builtin_double;
	399	lai->primitive_type_vector [pascal_primitive_type_void]
	400	= builtin->builtin_void;
	401	lai->primitive_type_vector [pascal_primitive_type_long_long]
	402	= builtin->builtin_long_long;
	403	lai->primitive_type_vector [pascal_primitive_type_signed_char]
	404	= builtin->builtin_signed_char;
	405	lai->primitive_type_vector [pascal_primitive_type_unsigned_char]
	406	= builtin->builtin_unsigned_char;
	407	lai->primitive_type_vector [pascal_primitive_type_unsigned_short]
	408	= builtin->builtin_unsigned_short;
	409	lai->primitive_type_vector [pascal_primitive_type_unsigned_int]
	410	= builtin->builtin_unsigned_int;
	411	lai->primitive_type_vector [pascal_primitive_type_unsigned_long]
	412	= builtin->builtin_unsigned_long;
	413	lai->primitive_type_vector [pascal_primitive_type_unsigned_long_long]
	414	= builtin->builtin_unsigned_long_long;
	415	lai->primitive_type_vector [pascal_primitive_type_long_double]
	416	= builtin->builtin_long_double;
	417	lai->primitive_type_vector [pascal_primitive_type_complex]
	418	= builtin->builtin_complex;
	419	lai->primitive_type_vector [pascal_primitive_type_double_complex]
	420	= builtin->builtin_double_complex;
fbb06eb1 UW	421
	422	lai->bool_type_symbol = "boolean";
	423	lai->bool_type_default = builtin->builtin_bool;
cad351d1 UW	424	}
cad351d1 UW	425
373a8247 PM	426	const struct language_defn pascal_language_defn =
	427	{
	428	"pascal", /* Language name */
	429	language_pascal,
373a8247	430	range_check_on,
63872f9d	431	case_sensitive_on,
7ca2d3a3	432	array_row_major,
9a044a89	433	macro_expansion_no,
5f9769d1	434	&exp_descriptor_standard,
373a8247 PM	435	pascal_parse,
373a8247 PM	436	pascal_error,
e85c3284	437	null_post_parser,
373a8247 PM	438	pascal_printchar, /* Print a character constant */
	439	pascal_printstr, /* Function to print string constant */
	440	pascal_emit_char, /* Print a single char */
373a8247	441	pascal_print_type, /* Print a type using appropriate syntax */
5c6ce71d	442	pascal_print_typedef, /* Print a typedef using appropriate syntax */
373a8247 PM	443	pascal_val_print, /* Print a value using appropriate syntax */
373a8247 PM	444	pascal_value_print, /* Print a top-level value */
a5ee536b	445	default_read_var_value, /* la_read_var_value */
f636b87d	446	NULL, /* Language specific skip_trampoline */
2b2d9e11	447	"this", /* name_of_this */
5f9a71c3	448	basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
b368761e	449	basic_lookup_transparent_type,/* lookup_transparent_type */
9a3d7dfd	450	NULL, /* Language specific symbol demangler */
31c27f77	451	NULL, /* Language specific class_name_from_physname */
373a8247 PM	452	pascal_op_print_tab, /* expression operators for printing */
	453	1, /* c-style arrays */
	454	0, /* String lower bound */
6084f43a	455	default_word_break_characters,
41d27058	456	default_make_symbol_completion_list,
cad351d1	457	pascal_language_arch_info,
e79af960	458	default_print_array_index,
41f1b697	459	default_pass_by_reference,
ae6a3a4c	460	default_get_string,
1a119f36	461	NULL, /* la_get_symbol_name_cmp */
f8eba3c6	462	iterate_over_symbols,
373a8247 PM	463	LANG_MAGIC
	464	};
	465
	466	void
fba45db2	467	_initialize_pascal_language (void)
373a8247 PM	468	{
	469	add_language (&pascal_language_defn);
	470	}