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ruby--ruby/ext/coverage/coverage.c
nobu 9f41782ec8 * ext/{coverage,objspace}/extconf.rb ($INCFLAGS): explicitly add
topdir and top_srcdir.  [ruby-dev:42031]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28987 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2010-08-14 10:12:13 +00:00

98 lines
2.1 KiB
C

/************************************************
coverage.c -
$Author: $
Copyright (c) 2008 Yusuke Endoh
************************************************/
#include "ruby.h"
#include "vm_core.h"
/*
* call-seq:
* Coverage.start => nil
*
* Enables coverage measurement.
*/
static VALUE
rb_coverage_start(VALUE klass)
{
if (!RTEST(rb_get_coverages())) {
VALUE coverages = rb_hash_new();
RBASIC(coverages)->klass = 0;
rb_set_coverages(coverages);
}
return Qnil;
}
static int
coverage_result_i(st_data_t key, st_data_t val, st_data_t dummy)
{
VALUE coverage = (VALUE)val;
RBASIC(coverage)->klass = rb_cArray;
rb_ary_freeze(coverage);
return ST_CONTINUE;
}
/*
* call-seq:
* Coverage.result => hash
*
* Returns a hash that contains filename as key and coverage array as value
* and disables coverage measurement.
*/
static VALUE
rb_coverage_result(VALUE klass)
{
VALUE coverages = rb_get_coverages();
if (!RTEST(coverages)) {
rb_raise(rb_eRuntimeError, "coverage measurement is not enabled");
}
RBASIC(coverages)->klass = rb_cHash;
st_foreach(RHASH_TBL(coverages), coverage_result_i, 0);
rb_hash_freeze(coverages);
rb_reset_coverages();
return coverages;
}
/* Coverage provides coverage measurement feature for Ruby.
* This feature is experimental, so these APIs may be changed in future.
*
* = Usage
*
* (1) require "coverage.so"
* (2) do Coverage.start
* (3) require or load Ruby source file
* (4) Coverage.result will return a hash that contains filename as key and
* coverage array as value.
*
* = Example
*
* [foo.rb]
* s = 0
* 10.times do |x|
* s += x
* end
*
* if s == 45
* p :ok
* else
* p :ng
* end
* [EOF]
*
* require "coverage.so"
* Coverage.start
* require "foo.rb"
* p Coverage.result #=> {"foo.rb"=>[1, 1, 10, nil, nil, 1, 1, nil, 0, nil]}
*/
void
Init_coverage(void)
{
VALUE rb_mCoverage = rb_define_module("Coverage");
rb_define_module_function(rb_mCoverage, "start", rb_coverage_start, 0);
rb_define_module_function(rb_mCoverage, "result", rb_coverage_result, 0);
}