byaccj1
An lalr(1) parser generator for java
Usage
byaccj [-dlrtvJ]
[-b
prefix]
[-Jclass
classname]
[-Jpackage
package_name]
[-Jextends
extends_name]
[-Jimplements
implements_name]
[-Jsemantic
semantic_type]
[-Jnorun]
[-Jnocontruct]
[-Jstack
NNN]
[-Jnodebug]
[-Jfinal]
[-Jthrows
exception_list]
filename
Overview
Yacc reads the grammar specification in the file filename 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. Yacc normally writes the parse tables and the driver routine to the file y.tab.c.
The following options are available:
-
-b prefix -
The
-boption changes the prefix prepended to the output file names to the string denoted by prefix. The default prefix is the character y.
-
-d -
The
-doption causes the header file y.tab.h to be written.
-
-l -
If the
-loption is not specified, yacc will insert The generated code to the user's original code. If the-loption is specified, yacc will not insert the
-
-r -
The
-roption causes yacc to produce separate files for code and tables. The code file is named y.code.c, and the tables file is named y.tab.c.
-
-t -
The
-toption changes the preprocessor directives generated by yacc so that debugging statements will be incorporated in the compiled code.
-
-v -
The
-voption causes a human-readable description of the generated parser to be written to the file y.output.
-
-J -
The
-Joption switches from C/C++ to Java output. Not necessary if other -J flags are used.
-
-Jclass=<classname> -
Changes the name of the Java class (and .java file) to classname
-
-Jpackage=<packagename> -
Changes the package in which the parser resides from the default <nothing> to packagename
-
-Jextends=<extend_name> -
Changes the class the parser extends from the default <nothing> to extend_name
-
-Jimplements=<implement_name> -
Changes the interface the parser implements from the default <nothing> to implement_name
-
-Jsemantic=<semantic_type> -
Changes the semantic (value of the rules' variables) type to semantic_type. No extra class will be generated.
-
-Jnorun -
The
-Jnorunoption informs Byacc to not generate a run() method. Useful when working with threads.
-
-Jnoconstruct -
The
-Jnoconstructoption informs Byacc to not generate constructors. Useful when extending classes.
-
-Jstack=<NNN> -
Changes the stack size from default 500 to NNN
-
-Jnodebug -
The
-Jnodebugoption informs Byacc to omit debugging code for further better performance.
-
-Jfinal -
The
-Jfinaloption makes generated class final.
-
-Jthrows=<exception_list> -
Informs Byacc to declare thrown exceptions for yyparse() method.
If the environment variable TMPDIR is set, the string denoted by TMPDIR will be used as the name of the directory where the temporary files are created.
Files
y.code.c
y.tab.c
y.tab.h
y.output
/tmp/yacc.aXXXXXX
/tmp/yacc.tXXXXXX
/tmp/yacc.uXXXXXX
Diagnostics
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.
Releases
Unchanged in 8 releases since Debian 6.0 (Squeeze).