[ruby-cvs:67401] yui-knk:r60220 (trunk): Store token first column number on RNode

[yui-knk at ruby-lang.org]

yui-knk	2017-10-21 01:22:22 +0900 (Sat, 21 Oct 2017)

  New Revision: 60220

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60220

  Log:
    Store token first column number on RNode
    
    * node.c (A_NODE_HEADER): Print column number.
    * node.h (nd_column, nd_set_column): Define getter/setter
      macros for column number of RNode.
    * parse.y: Set first column number of tokens.
    
    Notes:
    
    * Use `@n` to get the location of token in parse.y.
    * When we use `@n`, arguments of yyerror and yylex are
      changed.
    * Initialize column of nodes with -1 to make it easy
      to detect nodes which we forget to set a column number.

  Modified files:
    trunk/node.c
    trunk/node.h
    trunk/parse.y