[PATCH] Come up with json::integer_number and use it in GCOV.

[Martin Liška]

Hi.

As seen here:
https://github.com/RPGillespie6/fastcov/pull/18/files/f184dd8b6fc14e075dfc0ea93de7be5c96298ddb#r308735088

GCOV uses json::number for branch count, line count and similar. However, the json library
uses a double as an internal representation for numbers. That's no desirable in case
of GCOV and so that I would like to come up with integer_number type.
David would you be fine with that?

Patch can bootstrap on x86_64-linux-gnu and survives regression tests.

Ready to be installed?
Thanks,
Martin

gcc/ChangeLog:

2019-07-31  Martin Liska  <mliska@suse.cz>

	* diagnostic-format-json.cc (json_from_expanded_location):
	Use json::float_number.
	* gcov.c (output_intermediate_json_line): Use new
	json::integer_number.
	(output_json_intermediate_file): Likewise.
	* json.cc (number::print): Move to ...
	(float_number::print): ... this.
	(integer_number::print): New.
	(test_writing_numbers): Move to ...
	(test_writing_float_numbers): ... this.
	(test_writing_integer_numbers): New.
	(json_cc_tests): Register test_writing_integer_numbers.
	* json.h (class value): Add forward declaration
	for float_number and integer_number.
	(enum kind): Add JSON_INTEGER and JSON_FLOAT.
	(class number): Move to ...
	(class float_number): ... this.
	(class integer_number): New.
	* optinfo-emit-json.cc (optrecord_json_writer::impl_location_to_json):
	Use json::float_number.
	(optrecord_json_writer::location_to_json): Likewise.
	(optrecord_json_writer::profile_count_to_json): Likewise.
	(optrecord_json_writer::pass_to_json): Likewise.
---
 gcc/diagnostic-format-json.cc |  4 ++--
 gcc/gcov.c                    | 23 +++++++++++---------
 gcc/json.cc                   | 41 ++++++++++++++++++++++++++++-------
 gcc/json.h                    | 35 ++++++++++++++++++++++++------
 gcc/optinfo-emit-json.cc      | 10 ++++-----
 5 files changed, 81 insertions(+), 32 deletions(-)


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