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      1 # formatting.py
      2 # Sphinx extension providing formatting for Gallium-specific data
      3 # (c) Corbin Simpson 2010
      4 # Public domain to the extent permitted; contact author for special licensing
      5 
      6 import docutils.nodes
      7 import sphinx.addnodes
      8 
      9 def parse_envvar(env, sig, signode):
     10     envvar, t, default = sig.split(" ", 2)
     11     envvar = envvar.strip().upper()
     12     t = " Type: %s" % t.strip(" <>").lower()
     13     default = " Default: %s" % default.strip(" ()")
     14     signode += sphinx.addnodes.desc_name(envvar, envvar)
     15     signode += sphinx.addnodes.desc_type(t, t)
     16     signode += sphinx.addnodes.desc_annotation(default, default)
     17     return envvar
     18 
     19 def parse_opcode(env, sig, signode):
     20     opcode, desc = sig.split("-", 1)
     21     opcode = opcode.strip().upper()
     22     desc = " (%s)" % desc.strip()
     23     signode += sphinx.addnodes.desc_name(opcode, opcode)
     24     signode += sphinx.addnodes.desc_annotation(desc, desc)
     25     return opcode
     26 
     27 def setup(app):
     28     app.add_description_unit("envvar", "envvar", "%s (environment variable)",
     29         parse_envvar)
     30     app.add_description_unit("opcode", "opcode", "%s (TGSI opcode)",
     31         parse_opcode)
     32