1. 24 Nov, 2011 1 commit
    • keuchel@chromium.org's avatar
      Introduce extended mode. · 1e9a7267
      keuchel@chromium.org authored
      This CL introduces a third mode next to the non-strict
      (henceforth called 'classic mode') and 'strict mode'
      which is called 'extended mode' as in the current
      ES.next specification drafts. The extended mode is based on
      the 'strict mode' and adds new functionality to it. This
      means that most of the semantics of these two modes
      coincide.
      
      The 'extended mode' is entered instead of the 'strict mode'
      during parsing when using the 'strict mode' directive
      "use strict" and when the the harmony-scoping flag is
      active. This should be changed once it is fully specified how the 'extended mode' is entered.
      
      This change introduces a new 3 valued enum LanguageMode
      (see globals.h) corresponding to the modes which is mostly
      used by the frontend code. This includes the following
      components:
      * (Pre)Parser
      * Compiler
      * SharedFunctionInfo, Scope and ScopeInfo
      * runtime functions: StoreContextSlot,
        ResolvePossiblyDirectEval, InitializeVarGlobal,
        DeclareGlobals
      
      The old enum StrictModeFlag is still used in the backend
      when the distinction between the 'strict mode' and the 'extended mode' does not matter. This includes:
      * SetProperty runtime function, Delete builtin
      * StoreIC and KeyedStoreIC
      * StubCache
      
      Review URL: http://codereview.chromium.org/8417035
      
      git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10062 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      1e9a7267
  2. 21 Oct, 2011 1 commit
    • keuchel@chromium.org's avatar
      Reapply r9673 "Scope tree serialization and ScopeIterator cleanup." · 666c4be2
      keuchel@chromium.org authored
      This also includes the two fixes from r9674 and r9675. Here's the diff
      to the previous CL.
      
       --- a/src/runtime.cc
       +++ b/src/runtime.cc
       @@ -11133,17 +11133,26 @@ class ScopeIterator {
              context_(Context::cast(frame->context())),
              nested_scope_chain_(4) {
      
       +    // Catch the case when the debugger stops in an internal function.
       +    Handle<SharedFunctionInfo> shared_info(function_->shared());
       +    if (shared_info->script() == isolate->heap()->undefined_value()) {
       +      if (shared_info->scope_info()->HasContext()) Next();
       +      return;
       +    }
       +
            // Check whether we are in global code or function code. If there is a stack
            // slot for .result then this function has been created for evaluating
            // global code and it is not a real function.
            // Checking for the existence of .result seems fragile, but the scope info
            // saved with the code object does not otherwise have that information.
       -    int index = function_->shared()->scope_info()->
       +    int index = shared_info->scope_info()->
                StackSlotIndex(isolate_->heap()->result_symbol());
      
            // Reparse the code and analyze the scopes.
            ZoneScope zone_scope(isolate, DELETE_ON_EXIT);
       -    Handle<SharedFunctionInfo> shared_info(function_->shared());
            Handle<Script> script(Script::cast(shared_info->script()));
            Scope* scope;
            if (index >= 0) {
      
      Review URL: http://codereview.chromium.org/8344046
      
      git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9734 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      666c4be2
  3. 19 Oct, 2011 1 commit
  4. 18 Oct, 2011 1 commit
  5. 14 Sep, 2011 1 commit
  6. 15 Apr, 2011 1 commit
  7. 06 Apr, 2011 1 commit
  8. 05 Mar, 2010 1 commit
  9. 15 Oct, 2009 1 commit
  10. 08 Sep, 2009 1 commit
  11. 12 Jun, 2009 1 commit
    • sgjesse@chromium.org's avatar
      Add scope chain information to the debugger. · 88261439
      sgjesse@chromium.org authored
      For each frame it is now possible to request information on the scope chain. Each scope in the chain can have one of the types local, global, with and closure. For scopes of type global and with the mirror for the actual global or with object is available. For scopes of type local and closure a plain JavaScript object with the materialized content of the scope is created and its mirror is returned. Depending on the level of possible optimization the content of the materialized local and closure scopes might only contain the names which are actually used.
      
      To iterate the scope chain an iterator ScopeIterator have been added which can provide the type of each scope for each part of the chain. This iterator creates an artificial local scope whenever that is present as the context chain does not include the local scope.
      
      To avoid caching the mirror objects for the materialized the local and closure scopes transient mirrors have been added. They have negative handles and cannot be retrieved by subsequent lookup calls. Their content is part of a single response.
      
      For debugging purposes an additional runtime function DebugPrintScopes is been added.
      
      Added commands 'scopes' and 'scope' to the developer shell and fixed the dir command.
      
      BUG=none
      TEST=test/mjsunit/debug-scopes.js
      Review URL: http://codereview.chromium.org/123021
      
      git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2149 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      88261439