genmms.c

本工具提供一个词法分析器和语法分析器的集成开发环境

/*
 * genmms -- a program to make VMS makefiles for PCCTS
 *
 * ANTLR 1.33MR10
 * Terence John Parr 1989 - 1998
 * Purdue University
 * U of MN
 *
 *
 * VMS version from J.F. Pieronne
 */

#include <stdio.h>
#include <ssdef.h>
#include "pcctscfg.h" /* be sensitive to what ANTLR/DLG call the files */

#define DIE	return SS$_ABORT;
#define DONE	return 1;

#ifndef require
#define require(expr, err) {if ( !(expr) ) fatal(err);}
#endif

#define MAX_FILES	50
#define MAX_CLASSES	50

char *RENAME_OBJ_FLAG="/obj=",
     *RENAME_EXE_FLAG="/exe=";

char *dlg = "parser.dlg";
char *err = "err.c";
char *hdr = "stdpccts.h";
char *tok = "tokens.h";
char *mode = "mode.h";
char *scan = "scan";

char ATOKENBUFFER_O[100];
char APARSER_O[100];
char ASTBASE_O[100];
char PCCTSAST_O[100];
char LIST_O[100];
char DLEXERBASE_O[100];

/* Option flags */
static char *project="t", *files[MAX_FILES], *classes[MAX_CLASSES];
static int	num_files = 0;
static int	num_classes = 0;
static int	user_lexer = 0;
static char	*user_token_types = NULL;
static int	gen_CPP = 0;
static char *outdir=".";
static char *dlg_class = "DLGLexer";
static int	gen_trees = 0;
static int  gen_hoist = 0;

typedef struct _Opt {
			char *option;
			int  arg;
#ifdef __cplusplus
			void (*process)(...);
#else
			void (*process)();
#endif
			char *descr;
		} Opt;

#ifdef __STDC__
static void ProcessArgs(int, char **, Opt *);
#else
static void ProcessArgs();
#endif

static void
pProj( s, t )
char *s;
char *t;
{
	project = t;
}

static void
pUL( s )
char *s;
{
	user_lexer = 1;
}

static void
pCPP( s )
char *s;
{
	gen_CPP = 1;
}

static void
pUT( s, t )
char *s;
char *t;
{
	user_token_types = t;
}

static void
pTrees( s )
char *s;
{
	gen_trees = 1;
}

static void
pHoist( s )
char *s;
{
	gen_hoist = 1;
}

static void
#ifdef __STDC__
pFile( char *s )
#else
pFile( s )
char *s;
#endif
{
	if ( *s=='-' )
	{
		fprintf(stderr, "invalid option: '%s'; ignored...",s);
		return;
	}

	require(num_files<MAX_FILES, "exceeded max # of input files");
	files[num_files++] = s;
}

static void
#ifdef __STDC__
pClass( char *s, char *t )
#else
pClass( s, t )
char *s;
char *t;
#endif
{
	require(num_classes<MAX_CLASSES, "exceeded max # of grammar classes");
	classes[num_classes++] = t;
}

static void
#ifdef __STDC__
pDLGClass( char *s, char *t )
#else
pDLGClass( s, t )
char *s;
char *t;
#endif
{
	if ( !gen_CPP ) {
		fprintf(stderr, "-dlg-class makes no sense without C++ mode; ignored...");
	}
	else dlg_class = t;
}

static void
#ifdef __STDC__
pOdir( char *s, char *t )
#else
pOdir( s, t )
char *s;
char *t;
#endif
{
	outdir = t;
}

static void
#ifdef __STDC__
pHdr( char *s, char *t )
#else
pHdr( s, t )
char *s;
char *t;
#endif
{
	hdr = t;
}

Opt options[] = {
    { "-cc", 0,	pCPP,			"Generate C++ output"},
    { "-class", 1,	pClass,		"Name of a grammar class defined in grammar (if C++)"},
    { "-dlg-class", 1,pDLGClass,"Name of DLG lexer class (default=DLGLexer) (if C++)"},
    { "-header", 1,pHdr,		"Name of ANTLR standard header info (default=no file)"},
    { "-o", 1,	pOdir,			"Directory where output files should go (default=\".\")"},
    { "-project", 1,	pProj,	"Name of executable to create (default=t)"},
    { "-token-types", 1, pUT,	"Token types are in this file (don't use tokens.h)"},
    { "-trees", 0, pTrees,		"Generate ASTs"},
    { "-user-lexer", 0,	pUL,	"Do not create a DLG-based scanner"},
    { "-mrhoist",0,pHoist,      "Maintenance release style hoisting"},
	{ "*",  0,			pFile, 	"" },	/* anything else is a file */
	{ NULL, 0, NULL, NULL }
};

extern char *DIR();

main(argc, argv)
int argc;
char **argv;
{
	if ( argc == 1 ) { help(); DIE; }
	ProcessArgs(argc-1, &(argv[1]), options);

	strcpy(ATOKENBUFFER_O, ATOKENBUFFER_C);
	ATOKENBUFFER_O[strlen(ATOKENBUFFER_C)-strlen(CPP_FILE_SUFFIX)] = '\0';
	strcat(ATOKENBUFFER_O, OBJ_FILE_SUFFIX);
	strcpy(APARSER_O, APARSER_C);
	APARSER_O[strlen(APARSER_O)-strlen(CPP_FILE_SUFFIX)] = '\0';
	strcat(APARSER_O, OBJ_FILE_SUFFIX);

	strcpy(ASTBASE_O, ASTBASE_C);
	ASTBASE_O[strlen(ASTBASE_C)-strlen(CPP_FILE_SUFFIX)] = '\0';
	strcat(ASTBASE_O, OBJ_FILE_SUFFIX);

	strcpy(PCCTSAST_O, PCCTSAST_C);
	PCCTSAST_O[strlen(PCCTSAST_C)-strlen(CPP_FILE_SUFFIX)] = '\0';
	strcat(PCCTSAST_O, OBJ_FILE_SUFFIX);

	strcpy(LIST_O, LIST_C);
	LIST_O[strlen(LIST_C)-strlen(CPP_FILE_SUFFIX)] = '\0';
	strcat(LIST_O, OBJ_FILE_SUFFIX);

	strcpy(DLEXERBASE_O, DLEXERBASE_C);
	DLEXERBASE_O[strlen(DLEXERBASE_C)-strlen(CPP_FILE_SUFFIX)] = '\0';
	strcat(DLEXERBASE_O, OBJ_FILE_SUFFIX);

	if ( num_files == 0 ) fatal("no grammar files specified; exiting...");
	if ( !gen_CPP && num_classes>0 ) {
		warn("can't define classes w/o C++ mode; turning on C++ mode...\n");
		gen_CPP=1;
	}
	if ( gen_CPP && num_classes==0 ) {
		fatal("must define classes >0 grammar classes in C++ mode\n");
	}

	mk(project, files, num_files, argc, argv);
	DONE;
}

help()
{
	Opt *p = options;
	static char buf[1000+1];

	fprintf(stderr, "genmk [options] f1.g ... fn.g\n");
	while ( p->option!=NULL && *(p->option) != '*' )
	{
		buf[0]='\0';
		if ( p->arg ) sprintf(buf, "%s ___", p->option);
		else strcpy(buf, p->option);
		fprintf(stderr, "\t%-16s   %s\n", buf, p->descr);
		p++;
	}
}

mk(project, files, n, argc, argv)
char *project;
char **files;
int n;
int argc;
char **argv;
{
	int i;

	printf("!\n");
	printf("! PCCTS makefile for: ");
	pfiles(files, n, NULL);
	printf("\n");
	printf("!\n");
	printf("! Created from:");
	for (i=0; i<argc; i++) printf(" %s", argv[i]);
	printf("\n");
	printf("!\n");
	printf("! PCCTS release 1.33MR10\n");
	printf("! Project: %s\n", project);
	if ( gen_CPP ) printf("! C++ output\n");
	else printf("! C output\n");
	if ( user_lexer ) printf("! User-defined scanner\n");
	else printf("! DLG scanner\n");
	if ( user_token_types!=NULL ) printf("! User-defined token types in '%s'\n", user_token_types);
	else printf("! ANTLR-defined token types\n");
	printf("!\n");
	if ( user_token_types!=NULL ) {
		printf("! Make sure #tokdefs directive in ANTLR grammar lists this file:\n");
		printf("TOKENS = %s", user_token_types);
	}
	else printf("TOKENS = %stokens.h", DIR());
	printf("\n");
	printf("!\n");
	printf("! The following filenames must be consistent with ANTLR/DLG flags\n");
	printf("DLG_FILE = %s%s\n", DIR(), dlg);
	printf("ERR = %serr\n", DIR());
	if ( strcmp(hdr,"stdpccts.h")!=0 ) printf("HDR_FILE = %s%s\n", DIR(), hdr);
	else printf("HDR_FILE =\n");
	if ( !gen_CPP ) printf("MOD_FILE = %s%s\n", DIR(), mode);
	if ( !gen_CPP ) printf("SCAN = %s\n", scan);
	else printf("SCAN = %s%s\n", DIR(), dlg_class);

	printf("PCCTS = PCCTS_ROOT\n");
	printf("ANTLR_H = $(PCCTS):[h]\n");
	printf("BIN = $(PCCTS):[bin]\n");
	printf("ANTLR = mcr $(BIN)antlr\n");
	printf("DLG = mcr $(BIN)dlg\n");
	printf("LNKFLAGS = /traceback\n");
        if (gen_CPP)
	  printf("CFLAGS =/ASSUME=NOHEADER_TYPE_DEFAULT/define=(__STDC__)/include=($(ANTLR_H)");
        else
          printf("CFLAGS = /define=(__STDC__)/include=($(ANTLR_H)");
	if ( strcmp(outdir, ".")!=0 ) printf(", %s", outdir);
	printf(") $(COTHER)");
	printf("\n");
	printf("AFLAGS =");
	if ( strcmp(outdir,".")!=0 ) printf(" -o %s", outdir);
	if ( user_lexer ) printf(" -gx");
	if ( gen_CPP ) printf(" -\"CC\"");
	if ( strcmp(hdr,"stdpccts.h")!=0 ) printf(" -gh %s", hdr);
	if ( gen_trees ) printf(" -gt");
    if ( gen_hoist ) {
      printf(" -mrhoist on") ;
    } else {
      printf(" -mrhoist off");
    };
    printf(" $(AOTHER)");
    printf("\n");
    printf("DFLAGS = -\"C2\" -i");
    if ( gen_CPP ) printf(" -\"CC\"");
    if ( strcmp(dlg_class,"DLGLexer")!=0 ) printf(" -cl %s", dlg_class);
    if ( strcmp(outdir,".")!=0 ) printf(" -o %s", outdir);
    printf(" $(DOTHER)");
    printf("\n");
    printf("GRM = ");
    pfiles(files, n, NULL);
    printf("\n");
    printf("SRC = ");
    if ( gen_CPP ) pfiles(files, n, CPP_FILE_SUFFIX_NO_DOT);
    else pfiles(files, n, "c");
    if ( gen_CPP ) {
      printf(" ,-\n     ");
      printf(" ");
      pclasses(classes, num_classes, CPP_FILE_SUFFIX_NO_DOT);
      printf(" ,-\n      ");
      printf("$(ANTLR_H)%s", APARSER_C);
      if ( !user_lexer ) printf(", $(ANTLR_H)%s", DLEXERBASE_C);
      if ( gen_trees ) {
	printf(" ,-\n      ");
	printf("$(ANTLR_H)%s,", ASTBASE_C);
	printf(" $(ANTLR_H)%s", PCCTSAST_C);
	/*			printf(" $(ANTLR_H)%s%s", DirectorySymbol, LIST_C); */
      }
      printf(" ,-\n      ");
      printf(" $(ANTLR_H)%s", ATOKENBUFFER_C);
    }
    if ( !user_lexer ) {
      if ( gen_CPP ) printf(", $(SCAN)%s", CPP_FILE_SUFFIX);
      else printf(", %s$(SCAN).c", DIR());
    }
    if ( !gen_CPP ) printf(" $(ERR).c");
    printf("\n");
    printf("OBJ = ");
    pfiles(files, n, "obj");
    if ( gen_CPP ) {
      printf(" ,-\n     ");