VM: Re-format to use at most one newline between functions

runtime/vm/ast_printer.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/ast_printer.h"
 
 #include "vm/handles.h"
 #include "vm/log.h"
 #include "vm/object.h"
 #include "vm/os.h"
 #include "vm/parser.h"
 
 #if !defined(PRODUCT)
 
 namespace dart {
 
 AstPrinter::AstPrinter(bool log)
     : indent_(0), logger_(log ? Log::Current() : Log::NoOpLog()) {}
 
-
 AstPrinter::~AstPrinter() {}
 
-
 void AstPrinter::VisitGenericAstNode(AstNode* node) {
   logger_->Print("(%s ", node->Name());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitSequenceNode(SequenceNode* node) {
   indent_++;
   LocalScope* scope = node->scope();
   logger_->Print("(%s (scope \"%p\"", node->Name(), scope);
   if (scope != NULL) {
     logger_->Print(" (%s-%s) loop %d", scope->begin_token_pos().ToCString(),
                    scope->end_token_pos().ToCString(), scope->loop_level());
     if (scope->HasContextLevel()) {
       logger_->Print(" context %d captures %d", scope->context_level(),
                      scope->num_context_variables());
     } else {
       ASSERT(scope->num_context_variables() == 0);
     }
   }
   logger_->Print(")");
   for (int i = 0; i < node->length(); ++i) {
     PrintNewlineAndIndent();
     node->NodeAt(i)->Visit(this);
   }
   logger_->Print(")");
   indent_--;
 }
 
-
 void AstPrinter::VisitCloneContextNode(CloneContextNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitArgumentListNode(ArgumentListNode* arguments) {
   VisitGenericAstNode(arguments);
 }
 
-
 void AstPrinter::VisitReturnNode(ReturnNode* node) {
   const char* kind;
   switch (node->return_type()) {
     case ReturnNode::kContinuation:
       kind = "continuation ";
       break;
     case ReturnNode::kContinuationTarget:
       kind = "continuation-target ";
       break;
     case ReturnNode::kRegular:
       kind = "";
       break;
     default:
       kind = "";
       UNREACHABLE();
   }
   logger_->Print("(%s %s", node->Name(), kind);
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitGenericLocalNode(AstNode* node,
                                        const LocalVariable& variable) {
   logger_->Print("(%s ", node->Name());
   PrintLocalVariable(&variable);
   logger_->Print(" ");
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitLoadLocalNode(LoadLocalNode* node) {
   VisitGenericLocalNode(node, node->local());
 }
 
-
 void AstPrinter::VisitStoreLocalNode(StoreLocalNode* node) {
   VisitGenericLocalNode(node, node->local());
 }
 
-
 void AstPrinter::VisitGenericFieldNode(AstNode* node, const Field& field) {
   logger_->Print(
       "(%s %s%s \"%s\" ", node->Name(), field.is_final() ? "final " : "",
       String::Handle(AbstractType::Handle(field.type()).Name()).ToCString(),
       String::Handle(field.name()).ToCString());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitLoadInstanceFieldNode(LoadInstanceFieldNode* node) {
   VisitGenericFieldNode(node, node->field());
 }
 
-
 void AstPrinter::VisitStoreInstanceFieldNode(StoreInstanceFieldNode* node) {
   VisitGenericFieldNode(node, Field::ZoneHandle(node->field().Original()));
 }
 
-
 void AstPrinter::VisitLoadStaticFieldNode(LoadStaticFieldNode* node) {
   VisitGenericFieldNode(node, node->field());
 }
 
-
 void AstPrinter::VisitStoreStaticFieldNode(StoreStaticFieldNode* node) {
   VisitGenericFieldNode(node, node->field());
 }
 
-
 void AstPrinter::PrintLocalVariable(const LocalVariable* variable) {
   logger_->Print("%s%s \"%s\"", variable->is_final() ? "final " : "",
                  String::Handle(variable->type().Name()).ToCString(),
                  variable->name().ToCString());
   if (variable->HasIndex()) {
     if (variable->is_captured()) {
       logger_->Print(" (context %d %d)", variable->owner()->context_level(),
                      variable->index());
     } else {
       logger_->Print(" (stack %d)", variable->index());
     }
   }
 }
 
-
 void AstPrinter::PrintNewlineAndIndent() {
   logger_->Print("\n");
   for (intptr_t p = 0; p < indent_; ++p) {
     logger_->Print("  ");
   }
 }
 
-
 void AstPrinter::VisitLetNode(LetNode* node) {
   logger_->Print("(Let (");
   // Indent the variables and initializers by two.
   indent_ += 2;
   for (intptr_t i = 0; i < node->num_temps(); ++i) {
     if (i != 0) PrintNewlineAndIndent();
     logger_->Print("(");
     PrintLocalVariable(node->TempAt(i));
     logger_->Print(" ");
     node->InitializerAt(i)->Visit(this);
     logger_->Print(")");
   }
   logger_->Print(")");
 
   // Indent the body nodes by one.
   --indent_;
   for (intptr_t i = 0; i < node->nodes().length(); ++i) {
     PrintNewlineAndIndent();
     node->nodes()[i]->Visit(this);
   }
   logger_->Print(")");
   --indent_;
 }
 
-
 void AstPrinter::VisitArrayNode(ArrayNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitStringInterpolateNode(StringInterpolateNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitLiteralNode(LiteralNode* node) {
   const Instance& literal = node->literal();
   logger_->Print("(%s \"%s\")", node->Name(), literal.ToCString());
 }
 
-
 void AstPrinter::VisitTypeNode(TypeNode* node) {
   const AbstractType& type = node->type();
   logger_->Print("(%s \"%s\")", node->Name(),
                  String::Handle(type.Name()).ToCString());
 }
 
-
 void AstPrinter::VisitAssignableNode(AssignableNode* node) {
   const AbstractType& type = node->type();
   const String& dst_name = node->dst_name();
   logger_->Print("(%s (type \"%s\") (of \"%s\") ", node->Name(),
                  String::Handle(type.Name()).ToCString(), dst_name.ToCString());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitAwaitNode(AwaitNode* node) {
   logger_->Print("(*****%s***** (scope \"%p\") ", node->Name(), node->scope());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitAwaitMarkerNode(AwaitMarkerNode* node) {
   logger_->Print("(%s (async_scope \"%p\" await_scope \"%p\"))", node->Name(),
                  node->async_scope(), node->await_scope());
 }
 
-
 void AstPrinter::VisitPrimaryNode(PrimaryNode* node) {
   logger_->Print("(*****%s***** \"%s\")", node->Name(),
                  node->primary().ToCString());
 }
 
-
 void AstPrinter::VisitComparisonNode(ComparisonNode* node) {
   logger_->Print("(%s %s ", node->Name(), node->TokenName());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitBinaryOpNode(BinaryOpNode* node) {
   logger_->Print("(%s %s ", node->Name(), node->TokenName());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitUnaryOpNode(UnaryOpNode* node) {
   logger_->Print("(%s %s ", node->Name(), node->TokenName());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitConditionalExprNode(ConditionalExprNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitIfNode(IfNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitCaseNode(CaseNode* node) {
   logger_->Print("(%s (", node->Name());
   for (int i = 0; i < node->case_expressions()->length(); i++) {
     node->case_expressions()->NodeAt(i)->Visit(this);
   }
   if (node->contains_default()) {
     logger_->Print(" default");
   }
   logger_->Print(")");
   node->statements()->Visit(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitSwitchNode(SwitchNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitWhileNode(WhileNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitForNode(ForNode* node) {
   // Complicated because the condition is optional and so we clearly want to
   // indicate the subparts.
   logger_->Print("(%s (init ", node->Name());
   node->initializer()->Visit(this);
   if (node->condition() != NULL) {
     logger_->Print(") (cond ");
     node->condition()->Visit(this);
   }
   logger_->Print(") (update ");
   node->increment()->Visit(this);
   logger_->Print(") ");
   node->body()->Visit(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitDoWhileNode(DoWhileNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitJumpNode(JumpNode* node) {
   logger_->Print("(%s %s %s (scope \"%p\"))", node->Name(), node->TokenName(),
                  node->label()->name().ToCString(), node->label()->owner());
 }
 
-
 void AstPrinter::VisitInstanceCallNode(InstanceCallNode* node) {
   logger_->Print("(%s \"%s\" ", node->Name(),
                  node->function_name().ToCString());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitStaticCallNode(StaticCallNode* node) {
   const char* function_fullname = node->function().ToFullyQualifiedCString();
   logger_->Print("(%s \"%s\" ", node->Name(), function_fullname);
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitClosureNode(ClosureNode* node) {
   const char* function_fullname = node->function().ToFullyQualifiedCString();
   logger_->Print("(%s \"%s\")", node->Name(), function_fullname);
 }
 
-
 void AstPrinter::VisitClosureCallNode(ClosureCallNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitConstructorCallNode(ConstructorCallNode* node) {
   const char* kind = node->constructor().IsFactory() ? "factory " : "";
   const char* constructor_name = node->constructor().ToFullyQualifiedCString();
   logger_->Print("(%s %s \"%s\" ", node->Name(), kind, constructor_name);
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitInstanceGetterNode(InstanceGetterNode* node) {
   logger_->Print("(%s \"%s\" ", node->Name(), node->field_name().ToCString());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitInstanceSetterNode(InstanceSetterNode* node) {
   logger_->Print("(%s \"%s\" ", node->Name(), node->field_name().ToCString());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitInitStaticFieldNode(InitStaticFieldNode* node) {
   logger_->Print("(%s \"%s\")", node->Name(),
                  String::Handle(node->field().name()).ToCString());
 }
 
-
 void AstPrinter::VisitStaticGetterNode(StaticGetterNode* node) {
   String& class_name = String::Handle(node->cls().Name());
   logger_->Print("(%s \"%s.%s\")", node->Name(), class_name.ToCString(),
                  node->field_name().ToCString());
 }
 
-
 void AstPrinter::VisitStaticSetterNode(StaticSetterNode* node) {
   String& class_name = String::Handle(node->cls().Name());
   logger_->Print("(%s \"%s.%s\" ", node->Name(), class_name.ToCString(),
                  node->field_name().ToCString());
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitLoadIndexedNode(LoadIndexedNode* node) {
   logger_->Print("(%s%s ", node->Name(), node->IsSuperLoad() ? " super" : "");
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitStoreIndexedNode(StoreIndexedNode* node) {
   logger_->Print("(%s%s ", node->Name(), node->IsSuperStore() ? " super" : "");
   node->VisitChildren(this);
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitNativeBodyNode(NativeBodyNode* node) {
   logger_->Print(
       "(%s \"%s\" (%" Pd " args))", node->Name(),
       node->native_c_function_name().ToCString(),
       NativeArguments::ParameterCountForResolution(node->function()));
 }
 
-
 void AstPrinter::VisitCatchClauseNode(CatchClauseNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitTryCatchNode(TryCatchNode* node) {
   logger_->Print("(%s ", node->Name());
   node->try_block()->Visit(this);
   node->catch_block()->Visit(this);
   if (node->finally_block() != NULL) {
     logger_->Print("(finally ");
     node->finally_block()->Visit(this);
     logger_->Print(")");
   }
   logger_->Print(")");
 }
 
-
 void AstPrinter::VisitThrowNode(ThrowNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::VisitStopNode(StopNode* node) {
   logger_->Print("(%s %s)", node->Name(), node->message());
 }
 
-
 void AstPrinter::VisitInlinedFinallyNode(InlinedFinallyNode* node) {
   VisitGenericAstNode(node);
 }
 
-
 void AstPrinter::PrintNode(AstNode* node) {
   ASSERT(node != NULL);
   AstPrinter ast_printer;
   node->Visit(&ast_printer);
   logger_->Print("\n");
 }
 
-
 void AstPrinter::IndentN(int count) {
   for (int i = 0; i < count; i++) {
     logger_->Print(" ");
   }
 }
 
-
 void AstPrinter::PrintLocalScopeVariable(const LocalScope* scope,
                                          LocalVariable* var,
                                          int indent) {
   ASSERT(scope != NULL);
   ASSERT(var != NULL);
   IndentN(indent);
   logger_->Print("(%s%s '%s'", var->is_final() ? "final " : "",
                  String::Handle(var->type().Name()).ToCString(),
                  var->name().ToCString());
   if (var->owner() != scope) {
     logger_->Print(" alias");
   }
   if (var->HasIndex()) {
     logger_->Print(" @%d", var->index());
     if (var->is_captured()) {
       logger_->Print(" ctx %d", var->owner()->context_level());
     }
   } else if (var->owner()->function_level() != 0) {
     logger_->Print(" lev %d", var->owner()->function_level());
   }
   logger_->Print(" valid %s-%s)\n", var->token_pos().ToCString(),
                  scope->end_token_pos().ToCString());
 }
 
-
 void AstPrinter::PrintLocalScope(const LocalScope* scope,
                                  int start_index,
                                  int indent) {
   ASSERT(scope != NULL);
   for (int i = start_index; i < scope->num_variables(); i++) {
     LocalVariable* var = scope->VariableAt(i);
     PrintLocalScopeVariable(scope, var, indent);
   }
   const LocalScope* child = scope->child();
   while (child != NULL) {
     IndentN(indent);
     logger_->Print("{scope %p ", child);
     if (child->HasContextLevel()) {
       logger_->Print("ctx %d numctxvar %d ", child->context_level(),
                      child->num_context_variables());
     }
     logger_->Print("llev %d\n", child->loop_level());
     PrintLocalScope(child, 0, indent + kScopeIndent);
     IndentN(indent);
     logger_->Print("}\n");
     child = child->sibling();
   }
 }
 
-
 void AstPrinter::PrintFunctionScope(const ParsedFunction& parsed_function) {
   HANDLESCOPE(parsed_function.thread());
   const Function& function = parsed_function.function();
   SequenceNode* node_sequence = parsed_function.node_sequence();
   ASSERT(node_sequence != NULL);
   const LocalScope* scope = node_sequence->scope();
   ASSERT(scope != NULL);
   const char* function_name = function.ToFullyQualifiedCString();
   logger_->Print("Scope for function '%s'\n{scope %p ", function_name, scope);
   if (scope->HasContextLevel()) {
@@ skipping 28 matching lines @@
     }
     logger_->Print(" valid %s-%s)\n", param->token_pos().ToCString(),
                    scope->end_token_pos().ToCString());
     pos++;
   }
   // Visit remaining non-parameter variables and children scopes.
   PrintLocalScope(scope, pos, indent);
   logger_->Print("}\n");
 }
 
-
 void AstPrinter::PrintFunctionNodes(const ParsedFunction& parsed_function) {
   HANDLESCOPE(parsed_function.thread());
   SequenceNode* node_sequence = parsed_function.node_sequence();
   ASSERT(node_sequence != NULL);
   const char* function_name =
       parsed_function.function().ToFullyQualifiedCString();
   logger_->Print("Ast for function '%s' {\n", function_name);
   node_sequence->Visit(this);
   logger_->Print("}\n");
 }
 
 }  // namespace dart
 
 #endif  // !defined(PRODUCT)