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The patch shrinks the API presented in jsxdrapi.h down to 4 functions to encode/decode scripts and interpreted functions to/from the memory. The newly introduced implementation header vm/Xdr.h replaces the former JSXDRState with the template class XDRState parametrized by the enum type with two constants, XDR_ENCODE and XDR_DECODE. This way a compiler can fully eliminate the former runtime checks for the decoding/encoding mode. As a drawback this required to explicitly instantiate the xdr implementation as I do not want to put all the xdr code to header files. The memory-only XDR allows to avoid coping filename and to-be-atomized chars to a temporary buffer as the code can just access the buffer directly. Another change is that new XDRScript takes as a parameter its parent script. This allowed to avoid keeping filename in XDRState and simplify the filename management. Another change is the removal of JS_HAS_HDR. As CloneScript uses XDR to copy a script, JS_HAS_XDR cannot be disabled. --HG-- rename : js/src/jsxdrapi.cpp => js/src/vm/Xdr.cpp |
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