Preliminary code for block scopes and block contexts.

src/full-codegen.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 17 matching lines @@
 #include "v8.h"
 
 #include "codegen.h"
 #include "compiler.h"
 #include "debug.h"
 #include "full-codegen.h"
 #include "liveedit.h"
 #include "macro-assembler.h"
 #include "prettyprinter.h"
 #include "scopes.h"
+#include "scopeinfo.h"
 #include "stub-cache.h"
 
 namespace v8 {
 namespace internal {
 
 void BreakableStatementChecker::Check(Statement* stmt) {
   Visit(stmt);
 }
 
 
@@ skipping 792 matching lines @@
     ASSERT(forward_bailout_pending_ == NULL);
   }
 }
 
 
 void FullCodeGenerator::VisitBlock(Block* stmt) {
   Comment cmnt(masm_, "[ Block");
   Breakable nested_statement(this, stmt);
   SetStatementPosition(stmt);
 
+  Scope* saved_scope = scope();
+  if (stmt->block_scope() != NULL) {
+    { Comment cmnt(masm_, "[ Extend block context");
+      scope_ = stmt->block_scope();
+      __ Push(scope_->GetSerializedScopeInfo());
+      PushFunctionArgumentForContextAllocation();
+      __ CallRuntime(Runtime::kPushBlockContext, 2);
+      StoreToFrameField(StandardFrameConstants::kContextOffset,
+                        context_register());
+    }
+    { Comment cmnt(masm_, "[ Declarations");
+      VisitDeclarations(scope_->declarations());
+    }
+  }
   PrepareForBailoutForId(stmt->EntryId(), NO_REGISTERS);
   VisitStatements(stmt->statements());
+  scope_ = saved_scope;
   __ bind(nested_statement.break_target());
   PrepareForBailoutForId(stmt->ExitId(), NO_REGISTERS);
 }
 
 
 void FullCodeGenerator::VisitExpressionStatement(ExpressionStatement* stmt) {
   Comment cmnt(masm_, "[ ExpressionStatement");
   SetStatementPosition(stmt);
   VisitForEffect(stmt->expression());
 }
@@ skipping 472 matching lines @@
   }
 
   return false;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal