/* Various declarations for language-independent pretty-print subroutines.
- Copyright (C) 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003 Free Software Foundation, Inc.
Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net>
This file is part of GCC.
#ifndef GCC_PRETTY_PRINT_H
#define GCC_PRETTY_PRINT_H
-#include "diagnostic.h"
+#include "obstack.h"
+#include "input.h"
+
+/* 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 */
+} 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 output buffer datatype. This is best seen as an abstract datatype
+ whose fields should not be accessed directly by clients. */
+typedef struct
+{
+ /* The obstack where the text is built up. */
+ struct obstack obstack;
+
+ /* 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;
pp_none, pp_before, pp_after
} pp_padding;
+/* 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 *);
+
+/* 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
+
+/* Maximum characters per line in automatic line wrapping mode.
+ Zero means don't wrap lines. */
+#define pp_line_cutoff(PP) pp_base (PP)->ideal_maximum_length
+
+/* True if PRETTY-PTINTER is in line-wrapping mode. */
+#define pp_is_wrapping_line(PP) (pp_line_cutoff (PP) > 0)
+
+/* Prefixing rule used in formatting a diagnostic message. */
+#define pp_prefixing_rule(PP) pp_base (PP)->prefixing_rule
+
+/* 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;
- pp_flags flags;
+
+ /* 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;
+
+ /* The ideal upper bound of number of characters per line, as suggested
+ by front-end. */
+ int ideal_maximum_length;
+
+ /* Indentation count. */
+ int indent_skip;
+
+ /* Current prefixing rule. */
+ diagnostic_prefixing_rule_t prefixing_rule;
+
+ /* 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_left_paren(PPI) output_add_character (pp_buffer (PPI), '(')
-#define pp_right_paren(PPI) output_add_character (pp_buffer (PPI), ')')
-#define pp_left_bracket(PPI) output_add_character (pp_buffer (PPI), '[')
-#define pp_right_bracket(PPI) output_add_character (pp_buffer (PPI), ']')
-#define pp_left_brace(PPI) output_add_character (pp_buffer (PPI), '{')
-#define pp_right_brace(PPI) output_add_character (pp_buffer (PPI), '}')
-#define pp_semicolon(PPI) output_add_character (pp_buffer (PPI), ';')
-#define pp_comma(PPI) output_add_string (pp_buffer (PPI), ", ")
-#define pp_dot(PPI) output_add_character (pp_buffer (PPI), '.')
-#define pp_colon(PPI) output_add_character (pp_buffer (PPI), ':')
-#define pp_colon_colon(PPI) output_add_string (pp_buffer (PPI), "::")
-#define pp_arrow(PPI) output_add_string (pp_buffer (PPI), "->")
-#define pp_equal(PPI) output_add_character (pp_buffer (PPI), '=')
-#define pp_question(PPI) output_add_character (pp_buffer (PPI), '?')
-#define pp_bar(PPI) output_add_character (pp_buffer (PPI), '|')
-#define pp_carret(PPI) output_add_character (pp_buffer (PPI), '^')
-#define pp_ampersand(PPI) output_add_character (pp_buffer (PPI), '&')
-#define pp_less(PPI) output_add_character (pp_buffer (PPI), '<')
-#define pp_greater(PPI) output_add_character (pp_buffer (PPI), '>')
-#define pp_plus(PPI) output_add_character (pp_buffer (PPI), '+')
-#define pp_minus(PPI) output_add_character (pp_buffer (PPI), '-')
-#define pp_star(PPI) output_add_character (pp_buffer (PPI), '*')
-#define pp_slash(PPI) output_add_character (pp_buffer (PPI), '/')
-#define pp_modulo(PPI) output_add_character (pp_buffer (PPI), '%')
-#define pp_exclamation(PPI) output_add_character (pp_buffer (PPI), '!')
-#define pp_complement(PPI) output_add_character (pp_buffer (PPI), '~')
-#define pp_quote(PPI) output_add_character (pp_buffer (PPI), '\'')
-#define pp_backquote(PPI) output_add_character (pp_buffer (PPI), '`')
-#define pp_doublequote(PPI) output_add_character (pp_buffer (PPI), '"')
-#define pp_newline(PPI) output_add_newline (pp_buffer (PPI))
-#define pp_character(PPI, C) output_add_character (pp_buffer (PPI), C)
-#define pp_whitespace(PPI) output_add_space (pp_buffer (PPI))
-#define pp_indentation(PPI) output_indentation (pp_buffer (PPI))
-#define pp_newline_and_indent(PPI, N) \
- do { \
- pp_indentation (PPI) += N; \
- pp_newline (PPI); \
+#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_text(PP, TI) pp_base_format_text (pp_base (PP), TI)
+#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_separate_with(PPI, C) \
- do { \
- pp_character (PPI, C); \
- pp_whitespace (PPI); \
+#define pp_maybe_newline_and_indent(PP, N) \
+ if (pp_needs_newline (PP)) pp_newline_and_indent (PP, N)
+#define pp_separate_with(PP, C) \
+ do { \
+ pp_character (PP, C); \
+ pp_space (PP); \
} while (0)
-#define pp_format_scalar(PPI, F, S) \
- output_formatted_scalar (pp_buffer (PPI), F, S)
-#define pp_wide_integer(PPI, I) \
- pp_format_scalar (PPI, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT) I)
-#define pp_pointer(PPI, P) pp_format_scalar (PPI, "%p", p)
-
-#define pp_identifier(PPI, ID) output_add_string (pp_buffer (PPI), ID)
-#define pp_tree_identifier(PPI, T) pp_identifier(PPI, IDENTIFIER_POINTER (T))
-
-#define pp_unsupported_tree(PPI, T) \
- output_verbatim (pp_buffer(PPI), "#`%s' not supported by %s#",\
- tree_code_name[(int) TREE_CODE (T)], __FUNCTION__)
+#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_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), "#`%s' 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 *);
+extern void pp_printf (pretty_printer *, const char *, ...) ATTRIBUTE_PRINTF_2;
+extern void pp_verbatim (pretty_printer *, const char *, ...);
+extern void pp_base_flush (pretty_printer *);
+extern void pp_base_format_text (pretty_printer *, text_info *);
+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 *);
#endif /* GCC_PRETTY_PRINT_H */