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    Refactor call site handling for stack formatting · f7bc1fc7
    jgruber authored
    This commit introduces several new types:
    
    * JSStackFrame and WasmStackFrame are wrapper classes around a single frame
      in a FrameArray.
    * They both inherit from StackFrameBase, which uses virtual dispatch to call
      the correct implementation.
    * FrameArrayIterator contains a static instance of JSStackFrame and
      WasmStackFrame and returns a pointer to the corresponding type for each
      frame.
    * The JS callsite object now contains the frame array and frame index
      as internal fields.
    
    Internal stack formatting now relies completely on FrameArrayIterator and the
    {JS,Wasm}StackFrame types. JS callsite instances are allocated only for custom
    user formatting through Error.prepareStackTrace.
    
    BUG=
    
    Review-Url: https://codereview.chromium.org/2275233002
    Cr-Commit-Position: refs/heads/master@{#39015}
    f7bc1fc7
heap-symbols.h 13.2 KB