4.4BSD/usr/share/man/cat1/yacc.0

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YACC(1)                BSD Reference Manual               YACC(1)


NNAAMMEE
       yacc - an LALR(1) parser generator

SSYYNNOOPPSSIISS
       yyaacccc  [[  --ddllrrttvv  ]] [[ --bb _f_i_l_e___p_r_e_f_i_x ]] [[ --pp _s_y_m_b_o_l___p_r_e_f_i_x ]]
       _f_i_l_e_n_a_m_e

DDEESSCCRRIIPPTTIIOONN
       _Y_a_c_c reads the grammar specification in the file  _f_i_l_e_n_a_m_e
       and generates an LR(1) parser for it.  The parsers consist
       of a set of LALR(1) parsing tables and  a  driver  routine
       written  in  the  C  programming  language.  _Y_a_c_c normally
       writes the parse tables and the driver routine to the file
       _y_._t_a_b_._c_.

       The following options are available:

              --bb _f_i_l_e___p_r_e_f_i_x
                     The  --bb  option changes the prefix prepended
                     to the  output  file  names  to  the  string
                     denoted  by _f_i_l_e___p_r_e_f_i_x_.  The default prefix
                     is the character _y_.

              --dd     The --dd option causes the header file _y_._t_a_b_._h
                     to be written.

              --ll     If the --ll option is not specified, _y_a_c_c will
                     insert #line  directives  in  the  generated
                     code.   The  #line directives let the C com-
                     piler relate errors in the generated code to
                     the  user's original code.  If the --ll option
                     is specified, _y_a_c_c will not insert the #line
                     directives.   Any #line directives specified
                     by the user will be retained.

              --pp _s_y_m_b_o_l___p_r_e_f_i_x
                     The --pp option changes the  prefix  prepended
                     to  yacc-generated  symbols  to  the  string
                     denoted by _s_y_m_b_o_l___p_r_e_f_i_x_.  The default  pre-
                     fix is the string _y_y_.

              --rr     The  --rr  option causes _y_a_c_c to produce sepa-
                     rate files for code and  tables.   The  code
                     file  is named _y_._c_o_d_e_._c_, and the tables file
                     is named _y_._t_a_b_._c_.

              --tt     The  --tt  option  changes  the   preprocessor
                     directives  generated by _y_a_c_c so that debug-
                     ging statements will be incorporated in  the
                     compiled code.




4.3 Berkeley Distribution  May 24, 1993                         1








YACC(1)                BSD Reference Manual               YACC(1)


              --vv     The   --vv   option  causes  a  human-readable
                     description of the generated  parser  to  be
                     written to the file _y_._o_u_t_p_u_t_.

       If  the  environment  variable  TMPDIR  is set, the string
       denoted by TMPDIR will be used as the name of  the  direc-
       tory where the temporary files are created.

FFIILLEESS
       _y_._c_o_d_e_._c
       _y_._t_a_b_._c
       _y_._t_a_b_._h
       _y_._o_u_t_p_u_t
       _/_t_m_p_/_y_a_c_c_._a_X_X_X_X_X_X
       _/_t_m_p_/_y_a_c_c_._t_X_X_X_X_X_X
       _/_t_m_p_/_y_a_c_c_._u_X_X_X_X_X_X

DDIIAAGGNNOOSSTTIICCSS
       If  there  are rules that are never reduced, the number of
       such rules is reported on standard error.   If  there  are
       any LALR(1) conflicts, the number of conflicts is reported
       on standard error.
































4.3 Berkeley Distribution  May 24, 1993                         2