[PATCH] D29576: [ELF] - Change tokenizer to read tokens "on fly".

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.

Previously LLD linkerscript tokenizer worked with pre-created
list of tokens. That was not optimal, because sometimes tokens values are context dependent.
Like we were not able to parse "5*5" because in previous approach was impossible
to know if that are 3 tokens (math expression) or a single token representing file name mask.

Patch opens road to context-specific tokens extraction.


https://reviews.llvm.org/D29576

Files:
  ELF/LinkerScript.cpp
  ELF/ScriptParser.cpp
  ELF/ScriptParser.h
  test/ELF/linkerscript/diagnostic.s
  test/ELF/version-script-err.s

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