cthuang@contact.UUCP (Chin Huang) (03/26/91)
Submitted-by: Chin Huang <cthuang@contact.UUCP>
Posting-number: Volume 17, Issue 70
Archive-name: cproto/part01
Cproto is a program that generates function prototypes and variable
declarations from C language source code. It uses a yacc generated
parser, so it isn't confused by complex function definitions as much
as other prototype generators. I avoided implementing the entire C
language grammar by having the scanner discard everything between
braces.
An earlier version of cproto appeared in comp.sources.unix. This is
an updated version with features added from Eric R. Smith's mkptypes
program.
Chin
--------
#! /bin/sh
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# Contents: README CHANGES Makefile Makefile.uni cproto.1
# Wrapped by ibmpc@laphroig.UUCP on Mon Mar 25 11:41:03 1991
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
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XCproto is a program that generates function prototypes and variable
Xdeclarations from C language source code. It uses a yacc generated
Xparser, so it isn't confused by complex function definitions as much
Xas other prototype generators. I avoided implementing the entire C
Xlanguage grammar by having the scanner discard everything between
Xbraces.
X
XCproto is in the public domain. If you have any comments or find any
Xbugs, please let me know.
X
XChin Huang
Xcthuang@contact.uucp
Xchin.huang@canrem.uucp
END_OF_README
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XVersion 2
X
X- Added formal parameter promotion.
X- Added prototype style that surrounds prototypes with a guard macro.
X- Handles C++ style comment //.
X- Nifty new way to set prototype output format.
X- Got rid of the shell wrapper used to pipe the input through the C
X preprocessor (cpp).
X- For the port to MS-DOS, I modified cproto to run without cpp, but
X since I didn't want to reimplement cpp, the program processes only the
X #include and #define directives and ignores all others. Macro names
X defined by the #define directive are treated like typedef names if
X they appear in declaration specifiers.
X
XVersion 1
X
XPatchlevel 3
X
X- Fix: identical typedef names and struct tags should be allowed.
X For example:
X
X typedef struct egg_salad egg_salad;
X
X struct egg_salad {
X int mayo;
X };
X
X void dine(egg_salad l)
X {
X }
X
XPatchlevel 2
X
X- Fix: A typedef statement should allow a list of typedefs to be declared.
X Example:
X
X typedef int a, *b;
X
X- Fix: When run with the -v option on this input, cproto did not output
X a declaration for variable "b":
X
X char *a="one"; char *b="two";
X
X- The options were renamed. Added new options that change the output
X format of the prototypes.
X
XPatchlevel 1
X
X- Fix: Incorrect prototypes were produced for functions that take
X function pointer parameters or return a function pointer. For example,
X cproto produced an erroneous prototype for this function definition:
X
X void
X (*signal (sig, func))()
X int sig;
X void (*func)();
X {
X /* stuff */
X }
X
X- The lexical analyser now uses LEX. It should still be compatible with
X FLEX.
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sed "s/^X//" >Makefile <<'END_OF_Makefile'
X# $Id: makefile 2.1 91/03/25 10:56:54 cthuang Exp $
X#
X# MSDOS makefile for C prototype generator
X
XLEX = lex
XYACC = yacc
XCC = tcc
XCFLAGS = -ml -X $(DEFINES)
X
XDEFINES = -DMSDOS
X
XDIST1 = README CHANGES Makefile Makefile.uni cproto.1
XDIST2 = $(SOURCES)
XSOURCES = lex.l grammar.y \
X config.h cproto.h patchlev.h semantic.h symbol.h \
X cproto.c semantic.c string.c symbol.c
XCSOURCES = cproto.c semantic.c string.c symbol.c y_tab.c
XOBJECTS = cproto.obj semantic.obj getopt.obj symbol.obj \
X y_tab.obj
X
Xall: cproto.exe
X
Xcproto.exe: $(OBJECTS)
X $(CC) $(CFLAGS) $(OBJECTS)
X
Xy_tab.obj: y_tab.c
X $(CC) $(CFLAGS) -c $*.c
X
Xy_tab.c: grammar.y
X $(YACC) grammar.y
X
Xlex_yy.c: lex.l
X $(LEX) lex.l
X
XTAGS: $(SOURCES)
X etags -t $(SOURCES)
X
Xclean:
X erase *.obj
X erase *.bak
X erase *.log
X erase lex_yy.c
X erase y_tab.c
X erase cproto1.exe
X
Xlint:
X lint -B $(DEFINES) $(CSOURCES)
X
Xprint:
X cpr $(SOURCES) | lpr -J'cproto'
X
Xshar:
X rmcr $(DIST1)
X rmcr $(DIST2)
X shar $(DIST1) >cproto.sh1
X rmcr cproto.sh1
X shar $(DIST2) >cproto.sh2
X rmcr cproto.sh2
X
Xzip:
X pkzip -u cproto README CHANGES Makefile.* *.1 *.c *.h grammar.y lex.l
X
Xci:
X ci -r2 -u $(DIST1)
X ci -r2 -u $(DIST2)
X
X# DO NOT DELETE THIS LINE -- make depend depends on it.
X
Xcproto.obj: config.h cproto.h symbol.h
Xsemantic.obj: config.h cproto.h symbol.h semantic.h
Xstring.obj: config.h
Xsymbol.obj: config.h symbol.h
Xy_tab.obj: config.h cproto.h symbol.h semantic.h lex_yy.c
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X# $Id: Makefile.uni 2.1 91/02/28 11:15:54 cthuang Exp $
X#
X# UNIX makefile for C prototype generator
X
XLEX = lex
XYACC = yacc
XCFLAGS = $(DEFINES)
X
X# Define SYSV for System V, otherwise BSD is assumed.
X#DEFINES = -DSYSV
X
XDIST1 = README CHANGES Makefile Makefile.dos cproto.1
XDIST2 = $(SOURCES)
XSOURCES = lex.l grammar.y \
X config.h cproto.h patchlev.h semantic.h symbol.h \
X cproto.c semantic.c string.c symbol.c
XCSOURCES = cproto.c semantic.c string.c symbol.c y.tab.c
XOBJECTS = cproto.o semantic.o string.o symbol.o y.tab.o
X
Xall: cproto
X
Xcproto: $(OBJECTS)
X $(CC) $(CFLAGS) -o $@ $(OBJECTS)
X
Xy.tab.c: grammar.y
X $(YACC) grammar.y
X
Xlex.yy.c: lex.l
X $(LEX) lex.l
X
XTAGS: $(SOURCES)
X etags -t $(SOURCES)
X
Xclean:
X rm *.o *.bak *.log cproto1.exe
X
Xlint:
X lint -B $(DEFINES) $(CSOURCES)
X
Xprint:
X cpr $(SOURCES) | lpr -J'cproto'
X
Xshar:
X shar $(DIST1) >cproto.sh1
X shar $(DIST2) >cproto.sh2
X
Xci:
X ci -u $(DIST1) $(DIST2)
X
Xdepend:
X makedepend $(CSOURCES)
X
X# DO NOT DELETE THIS LINE -- make depend depends on it.
X
Xcproto.o: config.h cproto.h symbol.h
Xsemantic.o: config.h cproto.h symbol.h semantic.h
Xstring.o: config.h
Xsymbol.o: config.h symbol.h
Xy.tab.o: config.h cproto.h symbol.h semantic.h lex.yy.c
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sed "s/^X//" >cproto.1 <<'END_OF_cproto.1'
X.\" $Id: cproto.1 2.1 91/03/25 10:13:30 cthuang Exp $
X.\"
X.de EX \"Begin example
X.ne 5
X.if n .sp 1
X.if t .sp .5
X.nf
X.in +.5i
X..
X.de EE \"End example
X.fi
X.in -.5i
X.if n .sp 1
X.if t .sp .5
X..
X.TH CPROTO 1 "February 28, 1991"
X.SH NAME
Xcproto \- generate C function prototypes from C source code
X.SH SYNOPSIS
X.B cproto
X[
X.I option \fP...\fI
X] [
X.I file \fP...\fI
X]
X.SH DESCRIPTION
X.B Cproto
Xreads C source code files and outputs function prototypes for external
Xfunctions defined in the source to standard output.
XThe function definitions may be in the old style or ANSI style.
XOptionally,
X.B cproto
Xalso outputs declarations for any external variables defined in the file.
XIf no
X.I file
Xargument is given,
X.B cproto
Xtakes its input from the standard input.
X.SH OPTIONS
X.TP
X.B \-e
XOutput the keyword
X.B extern
Xin front of each declaration having global scope.
X.TP
X.BI \-f n
XSet the style of function prototype where
X.I n
Xis a number from 0 to 4.
XFor example, consider the function definition
X.EX
Xmain (argc, argv)
Xint argc;
Xchar *argv[];
X{
X ...
X}
X.EE
XIf the value is 0, then no prototypes are generated.
XWhen set to 1, the output is:
X.EX
Xint main(/*int argc, char *argv[]*/);
X.EE
XFor a value of 2, the output has the form:
X.EX
Xint main(int /*argc*/, char */*argv*/[]);
X.EE
XThe default value is 3.
XIt produces the full function prototype:
X.EX
Xint main(int argc, char *argv[]);
X.EE
XA value of 4 produces prototypes guarded by a macro:
X.EX
Xint main P_((int argc, char *argv[]));
X.EE
X.TP
X.BI \-m name
XSet the name of the macro used to guard prototypes when option -f4 is selected.
XBy default it is "P_".
X.TP
X.B \-d
XOmit the definition of the prototype macro named by the -m option.
X.TP
X.B \-p
XDisable promotion of formal parameters in function prototypes.
XBy default, parameters of type
X.B char
Xor
X.B short
Xin traditional style function definitions are promoted to type
X.B int
Xin the function prototype.
XParameters of type
X.B float
Xget promoted to
X.B double
Xas well.
X.TP
X.B \-s
XAlso output
X.B static
Xdeclarations.
X.TP
X.B \-v
XAlso output declarations for variables defined in the file.
X.TP
X.BI \-F string
XSet the format used to output each prototype.
XThe string is a template in the form
X.EX
X" int main ( a, b )"
X.EE
Xwhere each space in the string may be replaced with whitespace characters.
XFor example, the option
X.EX
X-F"int main(\\n\\ta,\\n\\tb\\n\\t)"
X.EE
Xwill produce prototypes in the format
X.EX
Xint main(
X int argc,
X char *argv[]
X );
X.EE
X.TP
X.BI \-D name\[=value\]
XThis option is passed through to the preprocessor and is used to define
Xsymbols for use with conditionals such as
X.I #ifdef.
X.TP
X.BI \-U name
XThis option is passed through to the preprocessor and is used to remove
Xany definitions of this symbol.
X.TP
X.BI \-I directory
XThis option is passed through to the preprocessor and is used to specify
Xa directory to search for files that are referenced with
X.I #include.
X.TP
X.B \-V
XPrint version information.
X.SH AUTHOR
XChin Huang
Xcthuang@contact.uucp
Xchin.huang@canrem.uucp
X.SH BUGS
XWhen cproto finds an error, it usually outputs the not very descriptive
Xmessage "syntax error".
X.TP
XOptions that take string arguments only interpret the following
Xcharacter escape sequences:
X.EX
X\\n newline
X\\t tab
X.EE
X.SH "SEE ALSO"
Xcc(1),
Xcpp(1)
END_OF_cproto.1
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fi
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fi
echo shar: End of shell archive.
exit 0
--
Chin Huang cthuang@contact.uucp chin.huang@canrem.uucp
exit 0 # Just in case...
--
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