Remove env_var and command_line from options #1240
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Removed
from_env_var
andfrom_command_line
fromMMTkOption
because now all options can be set in both ways.Replaced
Options::set_from_command_line
andOptions::set_from_env_var
with a singleOptions::set_by_string
.Moved several methods of
Options
out of theoptions!
macro if they don't need to be generated via macro expansion. Now only two methods are generated by the macro.set_by_string_inner
: Requires matching field names against user-provided strings.new
: Initializing fields using default values.In order to replicate the behavior that
Options::read_env_var_settings
silently ignores unrecognized option keys inMMTK_*
environment variables, we introduced an error typeSetOptionByStringError
whichOptions::set_by_string_inner
returns so thatOptions::read_env_var_settings
andOptions::bulk_set_by_string
can behave differently when encountering invalid keys.