--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/pretty-print.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,337 @@
+/* Various declarations for language-independent pretty-print subroutines.
+   Copyright (C) 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
+   Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net>
+
+This file is part of GCC.
+
+GCC 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, or (at your option) any later
+version.
+
+GCC 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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_PRETTY_PRINT_H
+#define GCC_PRETTY_PRINT_H
+
+#include "obstack.h"
+#include "input.h"
+
+/* Maximum number of format string arguments.  */
+#define PP_NL_ARGMAX   30
+
+/* The type of a text to be formatted according a format specification
+   along with a list of things.  */
+typedef struct
+{
+  const char *format_spec;
+  va_list *args_ptr;
+  int err_no;  /* for %m */
+  location_t *locus;
+  tree *abstract_origin;
+} text_info;
+
+/* How often diagnostics are prefixed by their locations:
+   o DIAGNOSTICS_SHOW_PREFIX_NEVER: never - not yet supported;
+   o DIAGNOSTICS_SHOW_PREFIX_ONCE: emit only once;
+   o DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: emit each time a physical
+   line is started.  */
+typedef enum
+{
+  DIAGNOSTICS_SHOW_PREFIX_ONCE       = 0x0,
+  DIAGNOSTICS_SHOW_PREFIX_NEVER      = 0x1,
+  DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE = 0x2
+} diagnostic_prefixing_rule_t;
+
+/* The chunk_info data structure forms a stack of the results from the
+   first phase of formatting (pp_base_format) which have not yet been
+   output (pp_base_output_formatted_text).  A stack is necessary because
+   the diagnostic starter may decide to generate its own output by way
+   of the formatter.  */
+struct chunk_info
+{
+  /* Pointer to previous chunk on the stack.  */
+  struct chunk_info *prev;
+
+  /* Array of chunks to output.  Each chunk is a NUL-terminated string.
+     In the first phase of formatting, even-numbered chunks are
+     to be output verbatim, odd-numbered chunks are format specifiers.
+     The second phase replaces all odd-numbered chunks with formatted
+     text, and the third phase simply emits all the chunks in sequence
+     with appropriate line-wrapping.  */
+  const char *args[PP_NL_ARGMAX * 2];
+};
+
+/* The output buffer datatype.  This is best seen as an abstract datatype
+   whose fields should not be accessed directly by clients.  */
+typedef struct 
+{
+  /* Obstack where the text is built up.  */  
+  struct obstack formatted_obstack;
+
+  /* Obstack containing a chunked representation of the format
+     specification plus arguments.  */
+  struct obstack chunk_obstack;
+
+  /* Currently active obstack: one of the above two.  This is used so
+     that the text formatters don't need to know which phase we're in.  */
+  struct obstack *obstack;
+
+  /* Stack of chunk arrays.  These come from the chunk_obstack.  */
+  struct chunk_info *cur_chunk_array;
+
+  /* Where to output formatted text.  */
+  FILE *stream;
+
+  /* The amount of characters output so far.  */  
+  int line_length;
+
+  /* This must be large enough to hold any printed integer or
+     floating-point value.  */
+  char digit_buffer[128];
+} output_buffer;
+
+/* The type of pretty-printer flags passed to clients.  */
+typedef unsigned int pp_flags;
+
+typedef enum
+{
+  pp_none, pp_before, pp_after
+} pp_padding;
+
+/* Structure for switching in and out of verbatim mode in a convenient
+   manner.  */
+typedef struct
+{
+  /* Current prefixing rule.  */
+  diagnostic_prefixing_rule_t rule;
+
+  /* The ideal upper bound of number of characters per line, as suggested
+     by front-end.  */  
+  int line_cutoff;
+} pp_wrapping_mode_t;
+
+/* Maximum characters per line in automatic line wrapping mode.
+   Zero means don't wrap lines.  */
+#define pp_line_cutoff(PP)  pp_base (PP)->wrapping.line_cutoff
+
+/* Prefixing rule used in formatting a diagnostic message.  */
+#define pp_prefixing_rule(PP)  pp_base (PP)->wrapping.rule
+
+/* Get or set the wrapping mode as a single entity.  */
+#define pp_wrapping_mode(PP) pp_base (PP)->wrapping
+
+/* The type of a hook that formats client-specific data onto a pretty_pinter.
+   A client-supplied formatter returns true if everything goes well,
+   otherwise it returns false.  */
+typedef struct pretty_print_info pretty_printer;
+typedef bool (*printer_fn) (pretty_printer *, text_info *, const char *,
+			    int, bool, bool, bool);
+
+/* Client supplied function used to decode formats.  */
+#define pp_format_decoder(PP) pp_base (PP)->format_decoder
+
+/* TRUE if a newline character needs to be added before further
+   formatting.  */
+#define pp_needs_newline(PP)  pp_base (PP)->need_newline 
+
+/* True if PRETTY-PRINTER is in line-wrapping mode.  */
+#define pp_is_wrapping_line(PP) (pp_line_cutoff (PP) > 0)
+
+/* The amount of whitespace to be emitted when starting a new line.  */
+#define pp_indentation(PP) pp_base (PP)->indent_skip
+
+/* The data structure that contains the bare minimum required to do
+   proper pretty-printing.  Clients may derived from this structure
+   and add additional fields they need.  */
+struct pretty_print_info
+{
+  /* Where we print external representation of ENTITY.  */
+  output_buffer *buffer;
+
+  /* The prefix for each new line.  */
+  const char *prefix;
+  
+  /* Where to put whitespace around the entity being formatted.  */
+  pp_padding padding;
+  
+  /* The real upper bound of number of characters per line, taking into
+     account the case of a very very looong prefix.  */  
+  int maximum_length;
+
+  /* Indentation count.  */
+  int indent_skip;
+
+  /* Current wrapping mode.  */
+  pp_wrapping_mode_t wrapping;
+
+  /* If non-NULL, this function formats a TEXT into the BUFFER.  When called,
+     TEXT->format_spec points to a format code.  FORMAT_DECODER should call
+     pp_string (and related functions) to add data to the BUFFER.
+     FORMAT_DECODER can read arguments from *TEXT->args_pts using VA_ARG.
+     If the BUFFER needs additional characters from the format string, it
+     should advance the TEXT->format_spec as it goes.  When FORMAT_DECODER
+     returns, TEXT->format_spec should point to the last character processed.
+  */
+  printer_fn format_decoder;
+
+  /* Nonzero if current PREFIX was emitted at least once.  */
+  bool emitted_prefix;
+
+  /* Nonzero means one should emit a newline before outputting anything.  */
+  bool need_newline;
+};
+
+#define pp_set_line_maximum_length(PP, L) \
+   pp_base_set_line_maximum_length (pp_base (PP), L)
+#define pp_set_prefix(PP, P)    pp_base_set_prefix (pp_base (PP), P)
+#define pp_destroy_prefix(PP)   pp_base_destroy_prefix (pp_base (PP))
+#define pp_remaining_character_count_for_line(PP) \
+  pp_base_remaining_character_count_for_line (pp_base (PP))
+#define pp_clear_output_area(PP) \
+  pp_base_clear_output_area (pp_base (PP))
+#define pp_formatted_text(PP)   pp_base_formatted_text (pp_base (PP))
+#define pp_last_position_in_text(PP) \
+  pp_base_last_position_in_text (pp_base (PP))
+#define pp_emit_prefix(PP)      pp_base_emit_prefix (pp_base (PP))
+#define pp_append_text(PP, B, E) \
+  pp_base_append_text (pp_base (PP), B, E)
+#define pp_flush(PP)            pp_base_flush (pp_base (PP))
+#define pp_format(PP, TI)       pp_base_format (pp_base (PP), TI)
+#define pp_output_formatted_text(PP) \
+  pp_base_output_formatted_text (pp_base (PP))
+#define pp_format_verbatim(PP, TI) \
+  pp_base_format_verbatim (pp_base (PP), TI)
+
+#define pp_character(PP, C)     pp_base_character (pp_base (PP), C)
+#define pp_string(PP, S)        pp_base_string (pp_base (PP), S)
+#define pp_newline(PP)          pp_base_newline (pp_base (PP))
+
+#define pp_space(PP)            pp_character (PP, ' ')
+#define pp_left_paren(PP)       pp_character (PP, '(')
+#define pp_right_paren(PP)      pp_character (PP, ')')
+#define pp_left_bracket(PP)     pp_character (PP, '[')
+#define pp_right_bracket(PP)    pp_character (PP, ']')
+#define pp_left_brace(PP)       pp_character (PP, '{')
+#define pp_right_brace(PP)      pp_character (PP, '}')
+#define pp_semicolon(PP)        pp_character (PP, ';')
+#define pp_comma(PP)            pp_string (PP, ", ")
+#define pp_dot(PP)              pp_character (PP, '.')
+#define pp_colon(PP)            pp_character (PP, ':')
+#define pp_colon_colon(PP)      pp_string (PP, "::")
+#define pp_arrow(PP)            pp_string (PP, "->")
+#define pp_equal(PP)            pp_character (PP, '=')
+#define pp_question(PP)         pp_character (PP, '?')
+#define pp_bar(PP)              pp_character (PP, '|')
+#define pp_carret(PP)           pp_character (PP, '^')
+#define pp_ampersand(PP)        pp_character (PP, '&')
+#define pp_less(PP)             pp_character (PP, '<')
+#define pp_greater(PP)          pp_character (PP, '>')
+#define pp_plus(PP)             pp_character (PP, '+')
+#define pp_minus(PP)            pp_character (PP, '-')
+#define pp_star(PP)             pp_character (PP, '*')
+#define pp_slash(PP)            pp_character (PP, '/')
+#define pp_modulo(PP)           pp_character (PP, '%')
+#define pp_exclamation(PP)      pp_character (PP, '!')
+#define pp_complement(PP)       pp_character (PP, '~')
+#define pp_quote(PP)            pp_character (PP, '\'')
+#define pp_backquote(PP)        pp_character (PP, '`')
+#define pp_doublequote(PP)      pp_character (PP, '"')
+#define pp_newline_and_indent(PP, N) \
+  do {                               \
+    pp_indentation (PP) += N;        \
+    pp_newline (PP);                 \
+    pp_base_indent (pp_base (PP));   \
+    pp_needs_newline (PP) = false;   \
+  } while (0)
+#define pp_maybe_newline_and_indent(PP, N) \
+  if (pp_needs_newline (PP)) pp_newline_and_indent (PP, N)
+#define pp_maybe_space(PP)   pp_base_maybe_space (pp_base (PP))
+#define pp_separate_with(PP, C)     \
+   do {                             \
+     pp_character (PP, C);          \
+     pp_space (PP);                 \
+   } while (0)
+#define pp_scalar(PP, FORMAT, SCALAR)	                      \
+  do					        	      \
+    {			         			      \
+      sprintf (pp_buffer (PP)->digit_buffer, FORMAT, SCALAR); \
+      pp_string (PP, pp_buffer (PP)->digit_buffer);           \
+    }						              \
+  while (0)
+#define pp_decimal_int(PP, I)  pp_scalar (PP, "%d", I)
+#define pp_wide_integer(PP, I) \
+   pp_scalar (PP, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT) I)
+#define pp_widest_integer(PP, I) \
+   pp_scalar (PP, HOST_WIDEST_INT_PRINT_DEC, (HOST_WIDEST_INT) I)
+#define pp_pointer(PP, P)      pp_scalar (PP, "%p", P)
+
+#define pp_identifier(PP, ID)  pp_string (PP, ID)
+#define pp_tree_identifier(PP, T)                      \
+  pp_append_text(PP, IDENTIFIER_POINTER (T), \
+                 IDENTIFIER_POINTER (T) + IDENTIFIER_LENGTH (T))
+
+#define pp_unsupported_tree(PP, T)                         \
+  pp_verbatim (pp_base (PP), "#%qs not supported by %s#", \
+               tree_code_name[(int) TREE_CODE (T)], __FUNCTION__)
+
+
+#define pp_buffer(PP) pp_base (PP)->buffer
+/* Clients that directly derive from pretty_printer need to override
+   this macro to return a pointer to the base pretty_printer structure.  */
+#define pp_base(PP) (PP)
+
+extern void pp_construct (pretty_printer *, const char *, int);
+extern void pp_base_set_line_maximum_length (pretty_printer *, int);
+extern void pp_base_set_prefix (pretty_printer *, const char *);
+extern void pp_base_destroy_prefix (pretty_printer *);
+extern int pp_base_remaining_character_count_for_line (pretty_printer *);
+extern void pp_base_clear_output_area (pretty_printer *);
+extern const char *pp_base_formatted_text (pretty_printer *);
+extern const char *pp_base_last_position_in_text (const pretty_printer *);
+extern void pp_base_emit_prefix (pretty_printer *);
+extern void pp_base_append_text (pretty_printer *, const char *, const char *);
+
+/* This header may be included before toplev.h, hence the duplicate
+   definitions to allow for GCC-specific formats.  */
+#if GCC_VERSION >= 3005
+#define ATTRIBUTE_GCC_PPDIAG(m, n) __attribute__ ((__format__ (__gcc_diag__, m ,n))) ATTRIBUTE_NONNULL(m)
+#else
+#define ATTRIBUTE_GCC_PPDIAG(m, n) ATTRIBUTE_NONNULL(m)
+#endif
+extern void pp_printf (pretty_printer *, const char *, ...)
+     ATTRIBUTE_GCC_PPDIAG(2,3);
+
+extern void pp_verbatim (pretty_printer *, const char *, ...)
+     ATTRIBUTE_GCC_PPDIAG(2,3);
+extern void pp_base_flush (pretty_printer *);
+extern void pp_base_format (pretty_printer *, text_info *);
+extern void pp_base_output_formatted_text (pretty_printer *);
+extern void pp_base_format_verbatim (pretty_printer *, text_info *);
+
+extern void pp_base_indent (pretty_printer *);
+extern void pp_base_newline (pretty_printer *);
+extern void pp_base_character (pretty_printer *, int);
+extern void pp_base_string (pretty_printer *, const char *);
+extern void pp_write_text_to_stream (pretty_printer *pp);
+extern void pp_base_maybe_space (pretty_printer *);
+
+/* Switch into verbatim mode and return the old mode.  */
+static inline pp_wrapping_mode_t
+pp_set_verbatim_wrapping_ (pretty_printer *pp)
+{
+  pp_wrapping_mode_t oldmode = pp_wrapping_mode (pp);
+  pp_line_cutoff (pp) = 0;
+  pp_prefixing_rule (pp) = DIAGNOSTICS_SHOW_PREFIX_NEVER;
+  return oldmode;
+}
+#define pp_set_verbatim_wrapping(PP) pp_set_verbatim_wrapping_ (pp_base (PP))
+
+#endif /* GCC_PRETTY_PRINT_H */