state_writer Class Reference

Inheritance diagram for state_writer:

Collaboration diagram for state_writer:

Public Member Functions
	state_writer ()
void	write_new_line ()
void	write_any_indent (int leading_spaces)
void	begin_s_expr (const char *tag)
void	end_s_expr ()

Private Member Functions
void	write_state_fileloc (struct fileloc *floc)
void	write_state_fields (pair_p fields)
void	write_state_a_string (const char *s)
void	write_state_string_option (options_p current)
void	write_state_type_option (options_p current)
void	write_state_nested_option (options_p current)
void	write_state_option (options_p current)
void	write_state_options (options_p opt)
void	write_state_lang_bitmap (lang_bitmap bitmap)
void	write_state_version (const char *version)
void	write_state_scalar_type (type_p current)
void	write_state_string_type (type_p current)
void	write_state_callback_type (type_p current)
void	write_state_undefined_type (type_p current)
void	write_state_struct_union_type (type_p current, const char *kindstr)
void	write_state_struct_type (type_p current)
void	write_state_user_struct_type (type_p current)
void	write_state_union_type (type_p current)
void	write_state_lang_struct_type (type_p current)
void	write_state_pointer_type (type_p current)
void	write_state_array_type (type_p current)
void	write_state_gc_used (enum gc_used_enum gus)
void	write_state_common_type_content (type_p current)
void	write_state_type (type_p current)
void	write_state_pair (pair_p current)
int	write_state_pair_list (pair_p list)
void	write_state_typedefs (void)
void	write_state_structures (void)
void	write_state_variables (void)
void	write_state_srcdir (void)
void	write_state_files_list (void)
void	write_state_languages (void)

Private Attributes
int	m_state_written_type_count
int	m_indent_amount
int	m_had_recent_newline

Friends
void	write_state (const char *state_path)

Detailed Description

A class for writing out "gtype.state".   

Constructor & Destructor Documentation

state_writer()

state_writer::state_writer

(

)

class state_writer's trivial constructor.   

Member Function Documentation

begin_s_expr()

void s_expr_writer::begin_s_expr ( const char * tag )

inherited

Write the beginning of a new s-expresion e.g. "(!foo "
The writer automatically adds whitespace to show the hierarchical
structure of the expressions, so each one starts on a new line,
and any within it will be at an increased indentation level.   

References ggc_alloc(), s_expr_writer::m_indent_amount, state_file, s_expr_writer::write_any_indent(), and s_expr_writer::write_new_line().

Referenced by write_state_fields(), write_state_fileloc(), write_state_files_list(), write_state_lang_struct_type(), write_state_languages(), write_state_option(), write_state_options(), write_state_pair(), write_state_srcdir(), write_state_structures(), write_state_type(), write_state_typedefs(), write_state_variables(), and write_state_version().

end_s_expr()

void s_expr_writer::end_s_expr ( void )

inherited

Write out the end of an s-expression: any necssessary indentation,
a closing parenthesis, and a new line.   

References ggc_alloc(), s_expr_writer::m_indent_amount, state_file, s_expr_writer::write_any_indent(), and s_expr_writer::write_new_line().

Referenced by write_state_fields(), write_state_fileloc(), write_state_files_list(), write_state_lang_struct_type(), write_state_languages(), write_state_option(), write_state_options(), write_state_pair(), write_state_srcdir(), write_state_structures(), write_state_type(), write_state_typedefs(), write_state_variables(), and write_state_version().

write_any_indent()

void s_expr_writer::write_any_indent ( int leading_spaces )

inherited

If we've just had a newline, write the indentation amount, potentially
omitting some spaces.

LEADING_SPACES exists to support code that writes strings with leading
spaces (e.g " foo") which might occur within a line, or could be the first
thing on a line.  By passing leading_spaces == 1, when such a string is the
first thing on a line, write_any_indent () swallows the successive
leading spaces into the indentation so that the "foo" begins at the expected
column.   

References ggc_alloc(), i, s_expr_writer::m_had_recent_newline, s_expr_writer::m_indent_amount, and state_file.

Referenced by s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), write_state_a_string(), write_state_array_type(), write_state_callback_type(), write_state_common_type_content(), write_state_gc_used(), write_state_lang_bitmap(), write_state_nested_option(), write_state_option(), write_state_options(), write_state_pair(), write_state_pointer_type(), write_state_scalar_type(), write_state_string_option(), write_state_string_type(), write_state_struct_union_type(), write_state_type(), write_state_type_option(), write_state_undefined_type(), and write_state_user_struct_type().

write_new_line()

void s_expr_writer::write_new_line ( void )

inherited

Write a newline to the output file, merging adjacent newlines.   

References ggc_alloc(), s_expr_writer::m_had_recent_newline, and state_file.

Referenced by s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), and write_state_structures().

write_state_a_string()

void state_writer::write_state_a_string ( const char * s )

private

Write a null-terminated string in our lexical convention, very
similar to the convention of C.   

References ggc_alloc(), state_file, and s_expr_writer::write_any_indent().

Referenced by write_state_array_type(), write_state_fileloc(), write_state_files_list(), write_state_nested_option(), write_state_pair(), write_state_srcdir(), write_state_string_option(), write_state_struct_union_type(), write_state_undefined_type(), write_state_user_struct_type(), and write_state_version().

write_state_array_type()

void state_writer::write_state_array_type ( type_p current )

private

Write an array type.   

References type::a, ggc_alloc(), type::len, NULL, type::p, state_file, type::u, s_expr_writer::write_any_indent(), write_state_a_string(), write_state_common_type_content(), and write_state_type().

Referenced by write_state_type().

write_state_callback_type()

void state_writer::write_state_callback_type ( type_p current )

private

Write the callback type.  There is only one such thing!  

References callback_type, fatal(), ggc_alloc(), state_file, s_expr_writer::write_any_indent(), and write_state_common_type_content().

Referenced by write_state_type().

write_state_common_type_content()

void state_writer::write_state_common_type_content ( type_p current )

private

Utility routine to write the common content of all types.  Notice
that the next field is *not* written on purpose.   

References type::gc_used, ggc_alloc(), type::pointer_to, state_file, type::state_number, s_expr_writer::write_any_indent(), write_state_gc_used(), and write_state_type().

Referenced by write_state_array_type(), write_state_callback_type(), write_state_pointer_type(), write_state_scalar_type(), write_state_string_type(), write_state_struct_union_type(), write_state_undefined_type(), and write_state_user_struct_type().

write_state_fields()

void state_writer::write_state_fields ( pair_p fields )

private

Write a list of fields.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), fields, gcc_assert, ggc_alloc(), pair_list_length(), state_file, and write_state_pair_list().

Referenced by write_state_struct_union_type(), and write_state_user_struct_type().

write_state_fileloc()

void state_writer::write_state_fileloc ( struct fileloc * floc )

private

Write a file location.  Files relative to $(srcdir) are quite
frequent and are handled specially.  This ensures that two gengtype
state file-s produced by gengtype on the same GCC source tree are
very similar and can be reasonably compared with diff, even if the
two GCC source trees have different absolute paths.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), gcc_assert, get_file_srcdir_relative_path(), get_input_file_name(), ggc_alloc(), NULL, state_file, and write_state_a_string().

Referenced by write_state_pair(), write_state_struct_union_type(), write_state_undefined_type(), and write_state_user_struct_type().

write_state_files_list()

void state_writer::write_state_files_list ( void )

private

Count and write the list of our files.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), get_file_srcdir_relative_path(), get_input_file_name(), get_lang_bitmap(), ggc_alloc(), gt_files, i, NULL, num_build_headers, num_gt_files, state_file, and write_state_a_string().

write_state_gc_used()

void state_writer::write_state_gc_used ( enum gc_used_enum gus )

private

Write the gc_used information.   

References GC_MAYBE_POINTED_TO, GC_POINTED_TO, GC_UNUSED, GC_USED, gcc_unreachable, ggc_alloc(), state_file, and s_expr_writer::write_any_indent().

Referenced by write_state_common_type_content().

write_state_lang_bitmap()

void state_writer::write_state_lang_bitmap ( lang_bitmap bitmap )

private

Write a bitmap representing a set of GCC front-end languages.   

References ggc_alloc(), state_file, and s_expr_writer::write_any_indent().

Referenced by write_state_struct_union_type().

write_state_lang_struct_type()

void state_writer::write_state_lang_struct_type ( type_p current )

private

Write a lang_struct type.  This is tricky and was painful to debug,
we deal with the next field specifically within their lang_struct
subfield, which points to a linked list of homonumous types.
Change this function with extreme care, see also
read_state_lang_struct_type.   

References s_expr_writer::begin_s_expr(), DBGPRINTF, s_expr_writer::end_s_expr(), gcc_assert, ggc_alloc(), type::lang_struct, NULL, type::s, state_file, type::state_number, type::u, union_or_struct_p(), write_state_struct_union_type(), and write_state_type().

Referenced by write_state_type().

write_state_languages()

void state_writer::write_state_languages ( void )

private

Write the list of GCC front-end languages.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), ggc_alloc(), i, lang_dir_names, num_lang_dirs, and state_file.

write_state_nested_option()

void state_writer::write_state_nested_option ( options_p current )

private

References nested_ptr_data::convert_from, nested_ptr_data::convert_to, ggc_alloc(), options::info, options::nested, NULL, state_file, nested_ptr_data::type, s_expr_writer::write_any_indent(), write_state_a_string(), and write_state_type().

Referenced by write_state_option().

write_state_option()

void state_writer::write_state_option ( options_p current )

private

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), fatal(), ggc_alloc(), options::kind, options::name, NULL, OPTION_NESTED, OPTION_STRING, OPTION_TYPE, state_file, s_expr_writer::write_any_indent(), write_state_nested_option(), write_state_string_option(), and write_state_type_option().

Referenced by write_state_options().

write_state_options()

void state_writer::write_state_options ( options_p opt )

private

Write a list of GTY options.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), ggc_alloc(), options::next, NULL, state_file, s_expr_writer::write_any_indent(), and write_state_option().

Referenced by write_state_pair(), and write_state_struct_union_type().

write_state_pair()

void state_writer::write_state_pair ( pair_p current )

private

Write a pair.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), ggc_alloc(), pair::line, pair::name, NULL, pair::opt, state_file, pair::type, s_expr_writer::write_any_indent(), write_state_a_string(), write_state_fileloc(), write_state_options(), and write_state_type().

Referenced by write_state_pair_list().

write_state_pair_list()

int state_writer::write_state_pair_list ( pair_p list )

private

Write a pair list and return the number of pairs written.   

References ggc_alloc(), pair::next, NULL, and write_state_pair().

Referenced by write_state_fields(), write_state_typedefs(), and write_state_variables().

write_state_pointer_type()

void state_writer::write_state_pointer_type ( type_p current )

private

Write a pointer type.   

References ggc_alloc(), type::p, state_file, type::u, s_expr_writer::write_any_indent(), write_state_common_type_content(), and write_state_type().

Referenced by write_state_type().

write_state_scalar_type()

void state_writer::write_state_scalar_type ( type_p current )

private

Write a scalar type.  We have only two of these.   

References fatal(), ggc_alloc(), scalar_char, scalar_nonchar, state_file, s_expr_writer::write_any_indent(), and write_state_common_type_content().

Referenced by write_state_type().

write_state_srcdir()

void state_writer::write_state_srcdir ( void )

private

Write the source directory.  File locations within the source
directory have been written specifically.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), srcdir, and write_state_a_string().

write_state_string_option()

void state_writer::write_state_string_option ( options_p current )

private

Our option-s have three kinds, each with its writer.   

References ggc_alloc(), options::info, NULL, state_file, options::string, s_expr_writer::write_any_indent(), and write_state_a_string().

Referenced by write_state_option().

write_state_string_type()

void state_writer::write_state_string_type ( type_p current )

private

Write the string type.  There is only one such thing!  

References fatal(), ggc_alloc(), state_file, string_type, s_expr_writer::write_any_indent(), and write_state_common_type_content().

Referenced by write_state_type().

write_state_struct_type()

void state_writer::write_state_struct_type ( type_p current )

private

Write a GTY struct type.   

References type::base_class, type::lang_struct, type::s, type::u, write_state_struct_union_type(), and write_state_type().

Referenced by write_state_type().

write_state_struct_union_type()

void state_writer::write_state_struct_union_type ( type_p current, const char * kindstr )

private

Common code to write structure like types.   

References type::bitmap, DBGPRINTF, type::fields, ggc_alloc(), NULL, type::opt, type::s, state_file, type::state_number, type::tag, type_lineloc(), type::u, s_expr_writer::write_any_indent(), write_state_a_string(), write_state_common_type_content(), write_state_fields(), write_state_fileloc(), write_state_lang_bitmap(), and write_state_options().

Referenced by write_state_lang_struct_type(), write_state_struct_type(), and write_state_union_type().

write_state_structures()

void state_writer::write_state_structures ( void )

private

Write our structures.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), ggc_alloc(), type::next, NULL, progname, state_file, structures, verbosity_level, s_expr_writer::write_new_line(), and write_state_type().

write_state_type()

void state_writer::write_state_type ( type_p current )

private

The important and recursive routine writing GTY types as understood
by gengtype.  Types which have a positive state_number have already
been seen and written.   

References s_expr_writer::begin_s_expr(), DBGPRINTF, s_expr_writer::end_s_expr(), gcc_unreachable, ggc_alloc(), m_state_written_type_count, NULL, state_file, type::state_number, TYPE_ARRAY, TYPE_CALLBACK, TYPE_LANG_STRUCT, TYPE_NONE, TYPE_POINTER, TYPE_SCALAR, TYPE_STRING, TYPE_STRUCT, TYPE_UNDEFINED, TYPE_UNION, TYPE_USER_STRUCT, s_expr_writer::write_any_indent(), write_state_array_type(), write_state_callback_type(), write_state_lang_struct_type(), write_state_pointer_type(), write_state_scalar_type(), write_state_string_type(), write_state_struct_type(), write_state_undefined_type(), write_state_union_type(), and write_state_user_struct_type().

Referenced by write_state_array_type(), write_state_common_type_content(), write_state_lang_struct_type(), write_state_nested_option(), write_state_pair(), write_state_pointer_type(), write_state_struct_type(), write_state_structures(), write_state_type_option(), and write_state_union_type().

write_state_type_option()

void state_writer::write_state_type_option ( options_p current )

private

References ggc_alloc(), options::info, state_file, options::type, s_expr_writer::write_any_indent(), and write_state_type().

Referenced by write_state_option().

write_state_typedefs()

void state_writer::write_state_typedefs ( void )

private

When writing imported linked lists, like typedefs, structures, ... we count
their length first and write it.  This eases the reading, and enables an
extra verification on the number of actually read items.   

Write our typedefs.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), gcc_assert, ggc_alloc(), pair_list_length(), progname, state_file, typedefs, verbosity_level, and write_state_pair_list().

write_state_undefined_type()

void state_writer::write_state_undefined_type ( type_p current )

private

Write an undefined type.   

References DBGPRINTF, GC_UNUSED, type::gc_used, gcc_assert, ggc_alloc(), NULL, type::s, state_file, type::state_number, type::tag, type_lineloc(), type::u, s_expr_writer::write_any_indent(), write_state_a_string(), write_state_common_type_content(), and write_state_fileloc().

Referenced by write_state_type().

write_state_union_type()

void state_writer::write_state_union_type ( type_p current )

private

write a GTY union type.   

References type::lang_struct, type::s, type::u, write_state_struct_union_type(), and write_state_type().

Referenced by write_state_type().

write_state_user_struct_type()

void state_writer::write_state_user_struct_type ( type_p current )

private

Write a GTY user-defined struct type.   

References DBGPRINTF, type::fields, ggc_alloc(), NULL, type::s, state_file, type::state_number, type::tag, type_lineloc(), type::u, s_expr_writer::write_any_indent(), write_state_a_string(), write_state_common_type_content(), write_state_fields(), and write_state_fileloc().

Referenced by write_state_type().

write_state_variables()

void state_writer::write_state_variables ( void )

private

Write our variables.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), gcc_assert, ggc_alloc(), pair_list_length(), progname, state_file, variables, verbosity_level, and write_state_pair_list().

write_state_version()

void state_writer::write_state_version ( const char * version )

private

Write version information.   

References s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), and write_state_a_string().

Friends And Related Symbol Documentation

write_state

void write_state ( const char * state_path )

friend

The write_state routine is the only writing routine called by main
in gengtype.cc.  To avoid messing the state if gengtype is
interrupted or aborted, we write a temporary file and rename it
after having written it in totality.   

Write the state, and update the state_number field in types.   

Field Documentation

m_had_recent_newline

int s_expr_writer::m_had_recent_newline

privateinherited

Referenced by s_expr_writer::write_any_indent(), and s_expr_writer::write_new_line().

m_indent_amount

int s_expr_writer::m_indent_amount

privateinherited

Referenced by s_expr_writer::begin_s_expr(), s_expr_writer::end_s_expr(), and s_expr_writer::write_any_indent().

m_state_written_type_count

int state_writer::m_state_written_type_count

private

Referenced by write_state_type().

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The documentation for this class was generated from the following file:

• gengtype-state.cc