305 lines
8.5 KiB
C
305 lines
8.5 KiB
C
/************************************************
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coverage.c -
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$Author: $
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Copyright (c) 2008 Yusuke Endoh
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************************************************/
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#include "ruby.h"
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#include "vm_core.h"
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#include "gc.h"
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static int current_mode;
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static VALUE me2counter = Qnil;
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/*
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* call-seq:
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* Coverage.start => nil
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*
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* Enables coverage measurement.
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*/
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static VALUE
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rb_coverage_start(int argc, VALUE *argv, VALUE klass)
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{
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VALUE coverages, opt;
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int mode;
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rb_scan_args(argc, argv, "01", &opt);
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if (argc == 0) {
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mode = 0; /* compatible mode */
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}
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else if (opt == ID2SYM(rb_intern("all"))) {
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mode = COVERAGE_TARGET_LINES | COVERAGE_TARGET_BRANCHES | COVERAGE_TARGET_METHODS;
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}
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else {
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mode = 0;
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opt = rb_convert_type(opt, T_HASH, "Hash", "to_hash");
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if (RTEST(rb_hash_lookup(opt, ID2SYM(rb_intern("lines")))))
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mode |= COVERAGE_TARGET_LINES;
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if (RTEST(rb_hash_lookup(opt, ID2SYM(rb_intern("branches")))))
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mode |= COVERAGE_TARGET_BRANCHES;
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if (RTEST(rb_hash_lookup(opt, ID2SYM(rb_intern("methods")))))
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mode |= COVERAGE_TARGET_METHODS;
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if (mode == 0) {
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rb_raise(rb_eRuntimeError, "no measuring target is specified");
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}
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}
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if (mode & COVERAGE_TARGET_METHODS) {
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me2counter = rb_hash_new_compare_by_id();
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}
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else {
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me2counter = Qnil;
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}
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coverages = rb_get_coverages();
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if (!RTEST(coverages)) {
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coverages = rb_hash_new();
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rb_obj_hide(coverages);
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current_mode = mode;
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if (mode == 0) mode = COVERAGE_TARGET_LINES;
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rb_set_coverages(coverages, mode, me2counter);
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}
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else if (current_mode != mode) {
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rb_raise(rb_eRuntimeError, "cannot change the measuring target during coverage measurement");
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}
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return Qnil;
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}
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static VALUE
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branch_coverage(VALUE branches)
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{
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VALUE ret = rb_hash_new();
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VALUE structure = rb_ary_dup(RARRAY_AREF(branches, 0));
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VALUE counters = rb_ary_dup(RARRAY_AREF(branches, 1));
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int i, j;
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long id = 0;
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for (i = 0; i < RARRAY_LEN(structure); i++) {
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VALUE branches = RARRAY_AREF(structure, i);
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VALUE base_type = RARRAY_AREF(branches, 0);
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VALUE base_first_lineno = RARRAY_AREF(branches, 1);
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VALUE base_first_column = RARRAY_AREF(branches, 2);
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VALUE base_last_lineno = RARRAY_AREF(branches, 3);
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VALUE base_last_column = RARRAY_AREF(branches, 4);
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VALUE children = rb_hash_new();
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rb_hash_aset(ret, rb_ary_new_from_args(6, base_type, LONG2FIX(id++), base_first_lineno, base_first_column, base_last_lineno, base_last_column), children);
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for (j = 5; j < RARRAY_LEN(branches); j += 6) {
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VALUE target_label = RARRAY_AREF(branches, j);
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VALUE target_first_lineno = RARRAY_AREF(branches, j + 1);
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VALUE target_first_column = RARRAY_AREF(branches, j + 2);
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VALUE target_last_lineno = RARRAY_AREF(branches, j + 3);
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VALUE target_last_column = RARRAY_AREF(branches, j + 4);
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int idx = FIX2INT(RARRAY_AREF(branches, j + 5));
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rb_hash_aset(children, rb_ary_new_from_args(6, target_label, LONG2FIX(id++), target_first_lineno, target_first_column, target_last_lineno, target_last_column), RARRAY_AREF(counters, idx));
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}
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}
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return ret;
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}
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static int
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method_coverage_i(void *vstart, void *vend, size_t stride, void *data)
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{
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/*
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* ObjectSpace.each_object(Module){|mod|
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* mod.instance_methods.each{|mid|
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* m = mod.instance_method(mid)
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* if loc = m.source_location
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* p [m.name, loc, $g_method_cov_counts[m]]
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* end
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* }
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* }
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*/
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VALUE ncoverages = *(VALUE*)data, v;
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for (v = (VALUE)vstart; v != (VALUE)vend; v += stride) {
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if (RB_TYPE_P(v, T_IMEMO) && imemo_type(v) == imemo_ment) {
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const rb_method_entry_t *me = (rb_method_entry_t *) v;
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VALUE path, first_lineno, first_column, last_lineno, last_column;
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VALUE data[5], ncoverage, methods;
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VALUE methods_id = ID2SYM(rb_intern("methods"));
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VALUE klass;
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const rb_method_entry_t *me2 = rb_resolve_me_location(me, data);
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if (me != me2) continue;
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klass = me->owner;
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if (RB_TYPE_P(klass, T_ICLASS)) {
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rb_bug("T_ICLASS");
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}
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path = data[0];
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first_lineno = data[1];
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first_column = data[2];
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last_lineno = data[3];
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last_column = data[4];
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if (FIX2LONG(first_lineno) <= 0) continue;
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ncoverage = rb_hash_aref(ncoverages, path);
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if (NIL_P(ncoverage)) continue;
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methods = rb_hash_aref(ncoverage, methods_id);
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{
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VALUE method_id = ID2SYM(me->def->original_id);
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VALUE rcount = rb_hash_aref(me2counter, (VALUE) me);
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VALUE key = rb_ary_new_from_args(6, klass, method_id, first_lineno, first_column, last_lineno, last_column);
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VALUE rcount2 = rb_hash_aref(methods, key);
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if (NIL_P(rcount)) rcount = LONG2FIX(0);
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if (NIL_P(rcount2)) rcount2 = LONG2FIX(0);
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if (!POSFIXABLE(FIX2LONG(rcount) + FIX2LONG(rcount2))) {
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rcount = LONG2FIX(FIXNUM_MAX);
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}
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else {
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rcount = LONG2FIX(FIX2LONG(rcount) + FIX2LONG(rcount2));
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}
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rb_hash_aset(methods, key, rcount);
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}
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}
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}
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return 0;
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}
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static int
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coverage_peek_result_i(st_data_t key, st_data_t val, st_data_t h)
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{
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VALUE path = (VALUE)key;
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VALUE coverage = (VALUE)val;
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VALUE coverages = (VALUE)h;
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if (current_mode == 0) {
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/* compatible mode */
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VALUE lines = rb_ary_dup(RARRAY_AREF(coverage, COVERAGE_INDEX_LINES));
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rb_ary_freeze(lines);
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coverage = lines;
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}
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else {
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VALUE h = rb_hash_new();
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if (current_mode & COVERAGE_TARGET_LINES) {
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VALUE lines = RARRAY_AREF(coverage, COVERAGE_INDEX_LINES);
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lines = rb_ary_dup(lines);
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rb_ary_freeze(lines);
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rb_hash_aset(h, ID2SYM(rb_intern("lines")), lines);
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}
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if (current_mode & COVERAGE_TARGET_BRANCHES) {
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VALUE branches = RARRAY_AREF(coverage, COVERAGE_INDEX_BRANCHES);
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rb_hash_aset(h, ID2SYM(rb_intern("branches")), branch_coverage(branches));
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}
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if (current_mode & COVERAGE_TARGET_METHODS) {
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rb_hash_aset(h, ID2SYM(rb_intern("methods")), rb_hash_new());
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}
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coverage = h;
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}
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rb_hash_aset(coverages, path, coverage);
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return ST_CONTINUE;
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}
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/*
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* call-seq:
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* Coverage.peek_result => hash
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*
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* Returns a hash that contains filename as key and coverage array as value.
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*
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* {
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* "file.rb" => [1, 2, nil],
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* ...
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* }
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*/
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static VALUE
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rb_coverage_peek_result(VALUE klass)
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{
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VALUE coverages = rb_get_coverages();
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VALUE ncoverages = rb_hash_new();
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if (!RTEST(coverages)) {
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rb_raise(rb_eRuntimeError, "coverage measurement is not enabled");
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}
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st_foreach(RHASH_TBL(coverages), coverage_peek_result_i, ncoverages);
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if (current_mode & COVERAGE_TARGET_METHODS) {
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rb_objspace_each_objects(method_coverage_i, &ncoverages);
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}
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rb_hash_freeze(ncoverages);
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return ncoverages;
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}
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/*
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* call-seq:
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* Coverage.result => hash
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*
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* Returns a hash that contains filename as key and coverage array as value
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* and disables coverage measurement.
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*/
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static VALUE
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rb_coverage_result(VALUE klass)
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{
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VALUE ncoverages = rb_coverage_peek_result(klass);
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rb_reset_coverages();
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me2counter = Qnil;
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return ncoverages;
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}
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/*
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* call-seq:
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* Coverage.running? => bool
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*
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* Returns true if coverage stats are currently being collected (after
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* Coverage.start call, but before Coverage.result call)
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*/
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static VALUE
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rb_coverage_running(VALUE klass)
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{
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VALUE coverages = rb_get_coverages();
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return RTEST(coverages) ? Qtrue : Qfalse;
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}
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/* Coverage provides coverage measurement feature for Ruby.
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* This feature is experimental, so these APIs may be changed in future.
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*
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* = Usage
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*
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* 1. require "coverage"
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* 2. do Coverage.start
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* 3. require or load Ruby source file
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* 4. Coverage.result will return a hash that contains filename as key and
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* coverage array as value. A coverage array gives, for each line, the
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* number of line execution by the interpreter. A +nil+ value means
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* coverage is disabled for this line (lines like +else+ and +end+).
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*
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* = Example
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*
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* [foo.rb]
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* s = 0
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* 10.times do |x|
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* s += x
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* end
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*
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* if s == 45
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* p :ok
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* else
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* p :ng
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* end
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* [EOF]
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*
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* require "coverage"
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* Coverage.start
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* require "foo.rb"
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* p Coverage.result #=> {"foo.rb"=>[1, 1, 10, nil, nil, 1, 1, nil, 0, nil]}
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*/
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void
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Init_coverage(void)
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{
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VALUE rb_mCoverage = rb_define_module("Coverage");
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rb_define_module_function(rb_mCoverage, "start", rb_coverage_start, -1);
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rb_define_module_function(rb_mCoverage, "result", rb_coverage_result, 0);
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rb_define_module_function(rb_mCoverage, "peek_result", rb_coverage_peek_result, 0);
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rb_define_module_function(rb_mCoverage, "running?", rb_coverage_running, 0);
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rb_global_variable(&me2counter);
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}
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