2011-06-21 Geoffrey Garen <ggaren@apple.com>
Reviewed by Oliver Hunt.
Moved 'const' off the global-variable-as-local-variable crack pipe
https://bugs.webkit.org/show_bug.cgi?id=63105
This is necessary for moving the rest of the code off of same.
Many problems remain in our handling of const. I have fixed none of them.
* bytecompiler/BytecodeGenerator.h:
(JSC::BytecodeGenerator::scopeChain): New accessor, needed to enable
const to directly implement its unique scoping rules.
* bytecompiler/NodesCodegen.cpp:
(JSC::PrefixResolveNode::emitBytecode): Do specify that our resolve is
for writing, so we don't overwrite const variables.
(JSC::ConstDeclNode::emitCodeSingle): Don't assume that all declared const
variables are available as local variables, since this won't be the case
once global variables are not available as local variables. Instead, use
put_scoped_var in the case where there is no local variable. Like a local
variable, put_scoped_var succeeds even though const properties are
read-only, since put_scoped_var skips read-only checks. (Yay?)
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@89392 268f45cc-cd09-0410-ab3c-d52691b4dbfc
3 files changed
