diff options
Diffstat (limited to 'man/man1/yacc.html')
| -rw-r--r-- | man/man1/yacc.html | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/man/man1/yacc.html b/man/man1/yacc.html deleted file mode 100644 index 1a485ce6..00000000 --- a/man/man1/yacc.html +++ /dev/null @@ -1,170 +0,0 @@ -<head> -<title>yacc(1) - Plan 9 from User Space</title> -<meta content="text/html; charset=utf-8" http-equiv=Content-Type> -</head> -<body bgcolor=#ffffff> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=10><td> -<tr><td width=20><td> -<tr><td width=20><td><b>YACC(1)</b><td align=right><b>YACC(1)</b> -<tr><td width=20><td colspan=2> - <br> -<p><font size=+1><b>NAME </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - yacc – yet another compiler-compiler<br> - -</table> -<p><font size=+1><b>SYNOPSIS </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>yacc</font></tt> [ <i>option ...</i> ] <i>grammar<br> - </i> -</table> -<p><font size=+1><b>DESCRIPTION </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <i>Yacc</i> converts a context-free grammar and translation code into - a set of tables for an LR(1) parser and translator. The grammar - may be ambiguous; specified precedence rules are used to break - ambiguities. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The output file, <tt><font size=+1>y.tab.c</font></tt>, must be compiled by the C compiler to - produce a program <tt><font size=+1>yyparse</font></tt>. This program must be loaded with a - lexical analyzer function, <tt><font size=+1>yylex(void)</font></tt> (often generated by <a href="../man1/lex.html"><i>lex</i>(1)</a>), - with a <tt><font size=+1>main(int argc, char *argv[])</font></tt> program, and with an error - handling routine, - <tt><font size=+1>yyerror(char*)</font></tt>. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The options are<br> - <tt><font size=+1>−o</font></tt> <i>output</i> Direct output to the specified file instead of <tt><font size=+1>y.tab.c</font></tt>.<br> - <tt><font size=+1>−D</font></tt><i>n</i> Create file <tt><font size=+1>y.debug</font></tt>, containing diagnostic messages. To incorporate - them in the parser, compile it with preprocessor symbol <tt><font size=+1>yydebug</font></tt> - defined. The amount of diagnostic output from the parser is regulated - by value <i>n</i>. The value 0 reports errors; 1 reports reductions; - higher values (up to 4) include - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - more information about state transitions.<br> - - </table> - - </table> - <tt><font size=+1>−v</font></tt> Create file <tt><font size=+1>y.output</font></tt>, containing a description of the parsing - tables and of conflicts arising from ambiguities in the grammar.<br> - <tt><font size=+1>−d</font></tt> Create file <tt><font size=+1>y.tab.h</font></tt>, containing <tt><font size=+1>#define</font></tt> statements that associate - <i>yacc</i>-assigned ‘token codes’ with user-declared ‘token names’. - Include it in source files other than <tt><font size=+1>y.tab.c</font></tt> to give access to - the token codes.<br> - <tt><font size=+1>−s</font></tt> <i>stem</i> Change the prefix <tt><font size=+1>y</font></tt> of the file names <tt><font size=+1>y.tab.c</font></tt>, <tt><font size=+1>y.tab.h</font></tt>, - <tt><font size=+1>y.debug</font></tt>, and <tt><font size=+1>y.output</font></tt> to <i>stem</i>.<br> - <tt><font size=+1>−S</font></tt> Write a parser that uses Stdio instead of the <tt><font size=+1>print</font></tt> routines - in libc. - <table border=0 cellpadding=0 cellspacing=0><tr height=5><td></table> - - The specification of <i>yacc</i> itself is essentially the same as the - UNIX version described in the references mentioned below. Besides - the <tt><font size=+1>−D</font></tt> option, the main relevant differences are:<br> - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - The interface to the C environment is by default through <tt><font size=+1><libc.h></font></tt> - rather than <tt><font size=+1><stdio.h></font></tt>; the <tt><font size=+1>−S</font></tt> option reverses this.<br> - The parser accepts UTF input text (see <a href="../man7/utf.html"><i>utf</i>(7)</a>), which has a couple - of effects. First, the return value of <tt><font size=+1>yylex()</font></tt> no longer fits - in a <tt><font size=+1>short</font></tt>; second, the starting value for non-terminals is now - 0xE000 rather than 257.<br> - The generated parser can be recursive: actions can call <i>yyparse</i>, - for example to implement a sort of <tt><font size=+1>#include</font></tt> statement in an interpreter.<br> - Finally, some undocumented inner workings of the parser have been - changed, which may affect programs that know too much about its - structure.<br> - - </table> - -</table> -<p><font size=+1><b>FILES </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>y.output<br> - y.tab.c<br> - y.tab.h<br> - y.debug<br> - y.tmp.*</font></tt> temporary file<br> - <tt><font size=+1>y.acts.*</font></tt> temporary file<br> - <tt><font size=+1>/usr/local/plan9/lib/yaccpar<br> - </font></tt> - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - parser prototype<br> - - </table> - - </table> - <tt><font size=+1>/usr/local/plan9/lib/yaccpars<br> - </font></tt> - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - - <table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - parser prototype using stdio<br> - - </table> - - </table> - -</table> -<p><font size=+1><b>SOURCE </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <tt><font size=+1>/usr/local/plan9/src/cmd/yacc.c<br> - </font></tt> -</table> -<p><font size=+1><b>SEE ALSO </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - <a href="../man1/lex.html"><i>lex</i>(1)</a><br> - S. C. Johnson and R. Sethi, “Yacc: A parser generator”, <i>Unix Research - System Programmer’s Manual,</i> Tenth Edition, Volume 2<br> - B. W. Kernighan and Rob Pike, <i>The UNIX Programming Environment,</i> - Prentice Hall, 1984<br> - -</table> -<p><font size=+1><b>BUGS </b></font><br> - -<table border=0 cellpadding=0 cellspacing=0><tr height=2><td><tr><td width=20><td> - - The parser may not have full information when it writes to <tt><font size=+1>y.debug</font></tt> - so that the names of the tokens returned by <tt><font size=+1>yylex</font></tt> may be missing.<br> - -</table> - -<td width=20> -<tr height=20><td> -</table> -<!-- TRAILER --> -<table border=0 cellpadding=0 cellspacing=0 width=100%> -<tr height=15><td width=10><td><td width=10> -<tr><td><td> -<center> -<a href="../../"><img src="../../dist/spaceglenda100.png" alt="Space Glenda" border=1></a> -</center> -</table> -<!-- TRAILER --> -</body></html> |