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Diffstat (limited to 'mcs/jay/README.jay')
| -rw-r--r-- | mcs/jay/README.jay | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/mcs/jay/README.jay b/mcs/jay/README.jay deleted file mode 100644 index 94b7b72e6e4..00000000000 --- a/mcs/jay/README.jay +++ /dev/null @@ -1,55 +0,0 @@ - This version of Berkeley Yacc was taken from the BSD-Lite CD and targeted -to Java by - - axel.schreiner@informatik.uni-osnabrueck.de - -Makefile -> makefile removed Berkeleyisms, call it jay -defs.h eliminate -dlpr options, %union, output_file, #ident - eliminate sekeleton.c references -error.c eliminate %union -main.c eliminate -dlpr options, %union, output_file -output.c eliminate -dlpr options, %union, output_file - fix #define, short, -t/yyDebug - respell YYERRCODE, YYTABLESIZE, YYFINAL, YYMAXTOKEN - output trailer last - switch to filter behaviour -reader.c eliminate output_file, #ident - #line -> // line, pass // - yyvsp[] -> yyVals[yyTop], yyval -> yyVal -skeleton.c -> skeleton Java skeleton -test removed -yacc.1 -> jay.1 adapted -yyfix.* removed - -Types: there is a significant difference. yacc uses %union to cast the value -stack and <tag> to select alternatives. This works for l- and r-values alike. -jay uses Object as the value stack and <tag> to set a class. l-values must not -be cast. $n should not be assigned to, but $$ usually is. $n is referenced, -but $$ usually is not. Consequently jay casts $n and $<tag>$ but not $<>n -and $$. This makes assignment to $n references to $$ kludgily possible. -As another kludge, to prevent 'untyped' messages and to avoid unnecessary -casts, casts to "Object" are not emitted. -------------------------------------------------------------------------------- - Berkeley Yacc is an LALR(1) parser generator. Berkeley Yacc has been made -as compatible as possible with AT&T Yacc. Berkeley Yacc can accept any input -specification that conforms to the AT&T Yacc documentation. Specifications -that take advantage of undocumented features of AT&T Yacc will probably be -rejected. - - Berkeley Yacc is distributed with no warranty whatever. The code is certain -to contain errors. Neither the author nor any contributor takes responsibility -for any consequences of its use. - - Berkeley Yacc is in the public domain. The data structures and algorithms -used in Berkeley Yacc are all either taken from documents available to the -general public or are inventions of the author. Anyone may freely distribute -source or binary forms of Berkeley Yacc whether unchanged or modified. -Distributers may charge whatever fees they can obtain for Berkeley Yacc. -Programs generated by Berkeley Yacc may be distributed freely. - - Please report bugs to - - robert.corbett@eng.Sun.COM - -Include a small example if possible. Please include the banner string from -skeleton.c with the bug report. Do not expect rapid responses. |