VM: Remove unnecessary explicit keywords

vm/aging_space.hpp

@@ -3,7 +3,7 @@ namespace factor {
 struct aging_space : bump_allocator<object> {
   object_start_map starts;
 
-  explicit aging_space(cell size, cell start)
+  aging_space(cell size, cell start)
       : bump_allocator<object>(size, start), starts(size, start) {}
 
   object* allot(cell size) {

vm/arrays.hpp

@@ -22,7 +22,7 @@ struct growable_array {
   cell count;
   data_root<array> elements;
 
-  explicit growable_array(factor_vm* parent, cell capacity = 10)
+  growable_array(factor_vm* parent, cell capacity = 10)
       : count(0),
         elements(parent->allot_array(capacity, false_object), parent) {}
 

vm/bump_allocator.hpp

@@ -7,7 +7,7 @@ template <typename Block> struct bump_allocator {
   cell end;
   cell size;
 
-  explicit bump_allocator(cell size_, cell start_)
+  bump_allocator(cell size_, cell start_)
       : here(start_), start(start_), end(start_ + size_), size(size_) {}
 
   bool contains_p(Block* block) { return ((cell) block - start) < size; }

vm/byte_arrays.hpp

@@ -4,7 +4,7 @@ struct growable_byte_array {
   cell count;
   data_root<byte_array> elements;
 
-  explicit growable_byte_array(factor_vm* parent, cell capacity = 40)
+  growable_byte_array(factor_vm* parent, cell capacity = 40)
       : count(0), elements(parent->allot_byte_array(capacity), parent) {}
 
   void grow_bytes(cell len);

vm/callbacks.hpp

@@ -28,7 +28,7 @@ struct callback_heap {
   cell here;
   factor_vm* parent;
 
-  explicit callback_heap(cell size, factor_vm* parent);
+  callback_heap(cell size, factor_vm* parent);
   ~callback_heap();
 
   void* callback_entry_point(code_block* stub) {

vm/code_block_visitor.hpp

@@ -15,7 +15,7 @@ template <typename Fixup> struct code_block_visitor {
   factor_vm* parent;
   Fixup fixup;
 
-  explicit code_block_visitor(factor_vm* parent_, Fixup fixup_)
+  code_block_visitor(factor_vm* parent_, Fixup fixup_)
       : parent(parent_), fixup(fixup_) {}
 
   code_block* visit_code_block(code_block* compiled);
@@ -36,7 +36,7 @@ template <typename Fixup> struct call_frame_code_block_visitor {
   factor_vm* parent;
   Fixup fixup;
 
-  explicit call_frame_code_block_visitor(factor_vm* parent_, Fixup fixup_)
+  call_frame_code_block_visitor(factor_vm* parent_, Fixup fixup_)
       : parent(parent_), fixup(fixup_) {}
 
   void operator()(void* frame_top, cell frame_size, code_block* owner,

vm/code_blocks.cpp

@@ -296,7 +296,7 @@ struct initial_code_block_visitor {
   cell literals;
   cell literal_index;
 
-  explicit initial_code_block_visitor(factor_vm* parent_, cell literals_)
+  initial_code_block_visitor(factor_vm* parent_, cell literals_)
       : parent(parent_), literals(literals_), literal_index(0) {}
 
   cell next_literal() {

vm/code_heap.cpp

@@ -234,7 +234,7 @@ void factor_vm::primitive_code_room() {
 }
 
 struct stack_trace_stripper {
-  explicit stack_trace_stripper() {}
+  stack_trace_stripper() {}
 
   void operator()(code_block* compiled, cell size) {
     compiled->owner = false_object;

vm/code_roots.hpp

@@ -7,7 +7,7 @@ struct code_root {
 
   void push() { parent->code_roots.push_back(this); }
 
-  explicit code_root(cell value_, factor_vm* parent_)
+  code_root(cell value_, factor_vm* parent_)
       : value(value_), valid(true), parent(parent_) {
     push();
   }

vm/collector.hpp

@@ -12,8 +12,7 @@ struct gc_workhorse : no_fixup {
   Policy policy;
   code_heap* code;
 
-  explicit gc_workhorse(factor_vm* parent_, TargetGeneration* target_,
-                        Policy policy_)
+  gc_workhorse(factor_vm* parent_, TargetGeneration* target_, Policy policy_)
       : parent(parent_), target(target_), policy(policy_), code(parent->code) {}
 
   object* resolve_forwarding(object* untagged) {
@@ -82,7 +81,7 @@ struct simple_unmarker {
 };
 
 struct full_unmarker {
-  explicit full_unmarker() {}
+  full_unmarker() {}
   void operator()(card* ptr) { *ptr = 0; }
 };
 
@@ -97,8 +96,7 @@ template <typename TargetGeneration, typename Policy> struct collector {
   cell decks_scanned;
   cell code_blocks_scanned;
 
-  explicit collector(factor_vm* parent_, TargetGeneration* target_,
-                     Policy policy_)
+  collector(factor_vm* parent_, TargetGeneration* target_, Policy policy_)
       : parent(parent_),
         data(parent_->data),
         code(parent_->code),

vm/compaction.cpp

@@ -10,7 +10,7 @@ struct compaction_fixup {
   const object** data_finger;
   const code_block** code_finger;
 
-  explicit compaction_fixup(mark_bits<object>* data_forwarding_map_,
+  compaction_fixup(mark_bits<object>* data_forwarding_map_,
                    mark_bits<code_block>* code_forwarding_map_,
                    const object** data_finger_,
                    const code_block** code_finger_)
@@ -61,8 +61,7 @@ struct object_compaction_updater {
   compaction_fixup fixup;
   object_start_map* starts;
 
-  explicit object_compaction_updater(factor_vm* parent_,
-                                     compaction_fixup fixup_)
+  object_compaction_updater(factor_vm* parent_, compaction_fixup fixup_)
       : parent(parent_),
         fixup(fixup_),
         starts(&parent->data->tenured->starts) {}
@@ -83,7 +82,7 @@ template <typename Fixup> struct code_block_compaction_relocation_visitor {
   code_block* old_address;
   Fixup fixup;
 
-  explicit code_block_compaction_relocation_visitor(factor_vm* parent_,
+  code_block_compaction_relocation_visitor(factor_vm* parent_,
                                            code_block* old_address_,
                                            Fixup fixup_)
       : parent(parent_), old_address(old_address_), fixup(fixup_) {}
@@ -129,7 +128,7 @@ template <typename Fixup> struct code_block_compaction_updater {
   slot_visitor<Fixup> data_forwarder;
   code_block_visitor<Fixup> code_forwarder;
 
-  explicit code_block_compaction_updater(
+  code_block_compaction_updater(
       factor_vm* parent_, Fixup fixup_, slot_visitor<Fixup> data_forwarder_,
       code_block_visitor<Fixup> code_forwarder_)
       : parent(parent_),
@@ -234,7 +233,7 @@ struct code_compaction_fixup {
   mark_bits<code_block>* code_forwarding_map;
   const code_block** code_finger;
 
-  explicit code_compaction_fixup(mark_bits<code_block>* code_forwarding_map_,
+  code_compaction_fixup(mark_bits<code_block>* code_forwarding_map_,
                         const code_block** code_finger_)
       : code_forwarding_map(code_forwarding_map_), code_finger(code_finger_) {}
 

vm/copying_collector.hpp

@@ -4,7 +4,7 @@ template <typename TargetGeneration, typename Policy>
 struct copying_collector : collector<TargetGeneration, Policy> {
   cell scan;
 
-  explicit copying_collector(factor_vm* parent_, TargetGeneration* target_,
+  copying_collector(factor_vm* parent_, TargetGeneration* target_,
                     Policy policy_)
       : collector<TargetGeneration, Policy>(parent_, target_, policy_),
         scan(target_->here) {}

vm/data_heap.hpp

@@ -20,7 +20,7 @@ struct data_heap {
   card_deck* decks;
   card_deck* decks_end;
 
-  explicit data_heap(cell young_size, cell aging_size, cell tenured_size);
+  data_heap(cell young_size, cell aging_size, cell tenured_size);
   ~data_heap();
   data_heap* grow(cell requested_size);
   template <typename Generation> void clear_cards(Generation* gen);

vm/data_heap_checker.cpp

@@ -29,7 +29,7 @@ struct slot_checker {
   object* obj;
   generation gen;
 
-  explicit slot_checker(factor_vm* parent_, object* obj_, generation gen_)
+  slot_checker(factor_vm* parent_, object* obj_, generation gen_)
       : parent(parent_), obj(obj_), gen(gen_) {}
 
   void check_write_barrier(cell* slot_ptr, generation target, char mask) {

vm/data_roots.hpp

@@ -7,12 +7,12 @@ template <typename Type> struct data_root : public tagged<Type> {
     parent->data_roots.push_back(data_root_range(&this->value_, 1));
   }
 
-  explicit data_root(cell value_, factor_vm* parent_)
+  data_root(cell value_, factor_vm* parent_)
       : tagged<Type>(value_), parent(parent_) {
     push();
   }
 
-  explicit data_root(Type* value_, factor_vm* parent_)
+  data_root(Type* value_, factor_vm* parent_)
       : tagged<Type>(value_), parent(parent_) {
     push();
   }

vm/debug.cpp

@@ -280,7 +280,7 @@ struct object_dumper {
   factor_vm* parent;
   cell type;
 
-  explicit object_dumper(factor_vm* parent_, cell type_)
+  object_dumper(factor_vm* parent_, cell type_)
       : parent(parent_), type(type_) {}
 
   void operator()(object* obj) {
@@ -303,7 +303,7 @@ struct find_data_reference_slot_visitor {
   object* obj;
   factor_vm* parent;
 
-  explicit find_data_reference_slot_visitor(cell look_for_, object* obj_,
+  find_data_reference_slot_visitor(cell look_for_, object* obj_,
                                    factor_vm* parent_)
       : look_for(look_for_), obj(obj_), parent(parent_) {}
 
@@ -320,7 +320,7 @@ struct dump_edges_slot_visitor {
   object* obj;
   factor_vm* parent;
 
-  explicit dump_edges_slot_visitor(cell, object* obj_, factor_vm* parent_)
+  dump_edges_slot_visitor(cell, object* obj_, factor_vm* parent_)
       : obj(obj_), parent(parent_) {}
 
   void operator()(cell* scan) {
@@ -334,7 +334,7 @@ template <typename SlotVisitor> struct data_reference_object_visitor {
   cell look_for;
   factor_vm* parent;
 
-  explicit data_reference_object_visitor(cell look_for_, factor_vm* parent_)
+  data_reference_object_visitor(cell look_for_, factor_vm* parent_)
       : look_for(look_for_), parent(parent_) {}
 
   void operator()(object* obj) {

vm/free_list_allocator.hpp

@@ -7,7 +7,7 @@ template <typename Block> struct free_list_allocator {
   free_list free_blocks;
   mark_bits<Block> state;
 
-  explicit free_list_allocator(cell size, cell start);
+  free_list_allocator(cell size, cell start);
   void initial_free_list(cell occupied);
   bool contains_p(Block* block);
   Block* first_block();
@@ -156,7 +156,7 @@ template <typename Block, typename Iterator> struct heap_compactor {
   Iterator& iter;
   const Block** finger;
 
-  explicit heap_compactor(mark_bits<Block>* state_, Block* address_,
+  heap_compactor(mark_bits<Block>* state_, Block* address_,
                  Iterator& iter_, const Block** finger_)
       : state(state_), address((char*)address_), iter(iter_), finger(finger_) {}
 

vm/gc.cpp

@@ -194,7 +194,7 @@ struct call_frame_scrubber {
   factor_vm* parent;
   context* ctx;
 
-  explicit call_frame_scrubber(factor_vm* parent_, context* ctx_)
+  call_frame_scrubber(factor_vm* parent_, context* ctx_)
       : parent(parent_), ctx(ctx_) {}
 
   void operator()(void* frame_top, cell frame_size, code_block* owner,

vm/gc.hpp

@@ -46,7 +46,7 @@ struct gc_state {
   u64 start_time;
   gc_event* event;
 
-  explicit gc_state(gc_op op_, factor_vm* parent);
+  gc_state(gc_op op_, factor_vm* parent);
   ~gc_state();
   void start_again(gc_op op_, factor_vm* parent);
 };

vm/image.cpp

@@ -55,7 +55,7 @@ struct startup_fixup {
   cell data_offset;
   cell code_offset;
 
-  explicit startup_fixup(cell data_offset_, cell code_offset_)
+  startup_fixup(cell data_offset_, cell code_offset_)
       : data_offset(data_offset_), code_offset(code_offset_) {}
 
   object* fixup_data(object* obj) {

vm/inline_cache.cpp

@@ -43,7 +43,7 @@ void factor_vm::update_pic_count(cell type) {
 struct inline_cache_jit : public jit {
   fixnum index;
 
-  explicit inline_cache_jit(cell generic_word_, factor_vm* vm)
+  inline_cache_jit(cell generic_word_, factor_vm* vm)
       : jit(code_block_pic, generic_word_, vm) {}
   ;
 

vm/jit.hpp

@@ -12,7 +12,7 @@ struct jit {
   cell offset;
   factor_vm* parent;
 
-  explicit jit(code_block_type type, cell owner, factor_vm* parent);
+  jit(code_block_type type, cell owner, factor_vm* parent);
   ~jit();
 
   void compute_position(cell offset);

vm/layouts.hpp

@@ -343,7 +343,7 @@ struct data_root_range {
   cell* start;
   cell len;
 
-  explicit data_root_range(cell* start_, cell len_)
+  data_root_range(cell* start_, cell len_)
       : start(start_), len(len_) {}
 };
 

vm/mark_bits.hpp

@@ -14,7 +14,7 @@ template <typename Block> struct mark_bits {
 
   void clear_forwarding() { memset(forwarding, 0, bits_size * sizeof(cell)); }
 
-  explicit mark_bits(cell size_, cell start_)
+  mark_bits(cell size_, cell start_)
       : size(size_),
         start(start_),
         bits_size(size / data_alignment / mark_bits_granularity),

vm/nursery_space.hpp

@@ -1,7 +1,7 @@
 namespace factor {
 
 struct nursery_space : bump_allocator<object> {
-  explicit nursery_space(cell size, cell start)
+  nursery_space(cell size, cell start)
       : bump_allocator<object>(size, start) {}
 };
 

vm/object_start_map.hpp

@@ -7,7 +7,7 @@ struct object_start_map {
   card* object_start_offsets;
   card* object_start_offsets_end;
 
-  explicit object_start_map(cell size_, cell start_);
+  object_start_map(cell size_, cell start_);
   ~object_start_map();
 
   cell first_object_in_card(cell card_index);

vm/objects.cpp

@@ -75,7 +75,7 @@ void factor_vm::primitive_size() {
 struct slot_become_fixup : no_fixup {
   std::map<object*, object*>* become_map;
 
-  explicit slot_become_fixup(std::map<object*, object*>* become_map_)
+  slot_become_fixup(std::map<object*, object*>* become_map_)
       : become_map(become_map_) {}
 
   object* fixup_data(object* old) {

vm/quotations.hpp

@@ -4,8 +4,7 @@ struct quotation_jit : public jit {
   data_root<array> elements;
   bool compiling, relocate;
 
-  explicit quotation_jit(cell owner, bool compiling_, bool relocate_,
-                         factor_vm* vm)
+  quotation_jit(cell owner, bool compiling_, bool relocate_, factor_vm* vm)
       : jit(code_block_unoptimized, owner, vm),
         elements(false_object, vm),
         compiling(compiling_),

vm/segments.hpp

@@ -9,7 +9,7 @@ struct segment {
   cell size;
   cell end;
 
-  explicit segment(cell size, bool executable_p);
+  segment(cell size, bool executable_p);
   ~segment();
 
   bool underflow_p(cell addr) {

vm/slot_visitor.hpp

@@ -109,7 +109,7 @@ template <typename Fixup> struct slot_visitor {
   factor_vm* parent;
   Fixup fixup;
 
-  explicit slot_visitor<Fixup>(factor_vm* parent_, Fixup fixup_)
+  slot_visitor<Fixup>(factor_vm* parent_, Fixup fixup_)
       : parent(parent_), fixup(fixup_) {}
 
   cell visit_pointer(cell pointer);
@@ -199,7 +199,7 @@ template <typename Fixup> struct callback_slot_visitor {
   callback_heap* callbacks;
   slot_visitor<Fixup>* visitor;
 
-  explicit callback_slot_visitor(callback_heap* callbacks_,
+  callback_slot_visitor(callback_heap* callbacks_,
                         slot_visitor<Fixup>* visitor_)
       : callbacks(callbacks_), visitor(visitor_) {}
 
@@ -263,7 +263,7 @@ template <typename Fixup> struct call_frame_slot_visitor {
   factor_vm* parent;
   slot_visitor<Fixup>* visitor;
 
-  explicit call_frame_slot_visitor(factor_vm* parent_,
+  call_frame_slot_visitor(factor_vm* parent_,
                           slot_visitor<Fixup>* visitor_)
       : parent(parent_), visitor(visitor_) {}
 

vm/tenured_space.hpp

@@ -3,7 +3,7 @@ namespace factor {
 struct tenured_space : free_list_allocator<object> {
   object_start_map starts;
 
-  explicit tenured_space(cell size, cell start)
+  tenured_space(cell size, cell start)
       : free_list_allocator<object>(size, start), starts(size, start) {}
 
   object* allot(cell size) {