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-rw-r--r--sunrpc/rpc_parse.c419
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diff --git a/sunrpc/rpc_parse.c b/sunrpc/rpc_parse.c
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+/* @(#)rpc_parse.c 2.1 88/08/01 4.0 RPCSRC */
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part. Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California 94043
+ */
+#ifndef lint
+static char sccsid[] = "@(#)rpc_parse.c 1.4 87/04/28 (C) 1987 SMI";
+#endif
+
+/*
+ * rpc_parse.c, Parser for the RPC protocol compiler
+ * Copyright (C) 1987 Sun Microsystems, Inc.
+ */
+#include <stdio.h>
+#include "rpc_util.h"
+#include "rpc_scan.h"
+#include "rpc_parse.h"
+
+/*
+ * return the next definition you see
+ */
+definition *
+get_definition()
+{
+ definition *defp;
+ token tok;
+
+ defp = ALLOC(definition);
+ get_token(&tok);
+ switch (tok.kind) {
+ case TOK_STRUCT:
+ def_struct(defp);
+ break;
+ case TOK_UNION:
+ def_union(defp);
+ break;
+ case TOK_TYPEDEF:
+ def_typedef(defp);
+ break;
+ case TOK_ENUM:
+ def_enum(defp);
+ break;
+ case TOK_PROGRAM:
+ def_program(defp);
+ break;
+ case TOK_CONST:
+ def_const(defp);
+ break;
+ case TOK_EOF:
+ return (NULL);
+ break;
+ default:
+ error("definition keyword expected");
+ }
+ scan(TOK_SEMICOLON, &tok);
+ isdefined(defp);
+ return (defp);
+}
+
+static
+isdefined(defp)
+ definition *defp;
+{
+ STOREVAL(&defined, defp);
+}
+
+
+static
+def_struct(defp)
+ definition *defp;
+{
+ token tok;
+ declaration dec;
+ decl_list *decls;
+ decl_list **tailp;
+
+ defp->def_kind = DEF_STRUCT;
+
+ scan(TOK_IDENT, &tok);
+ defp->def_name = tok.str;
+ scan(TOK_LBRACE, &tok);
+ tailp = &defp->def.st.decls;
+ do {
+ get_declaration(&dec, DEF_STRUCT);
+ decls = ALLOC(decl_list);
+ decls->decl = dec;
+ *tailp = decls;
+ tailp = &decls->next;
+ scan(TOK_SEMICOLON, &tok);
+ peek(&tok);
+ } while (tok.kind != TOK_RBRACE);
+ get_token(&tok);
+ *tailp = NULL;
+}
+
+static
+def_program(defp)
+ definition *defp;
+{
+ token tok;
+ version_list *vlist;
+ version_list **vtailp;
+ proc_list *plist;
+ proc_list **ptailp;
+
+ defp->def_kind = DEF_PROGRAM;
+ scan(TOK_IDENT, &tok);
+ defp->def_name = tok.str;
+ scan(TOK_LBRACE, &tok);
+ vtailp = &defp->def.pr.versions;
+ scan(TOK_VERSION, &tok);
+ do {
+ scan(TOK_IDENT, &tok);
+ vlist = ALLOC(version_list);
+ vlist->vers_name = tok.str;
+ scan(TOK_LBRACE, &tok);
+ ptailp = &vlist->procs;
+ do {
+ plist = ALLOC(proc_list);
+ get_type(&plist->res_prefix, &plist->res_type, DEF_PROGRAM);
+ if (streq(plist->res_type, "opaque")) {
+ error("illegal result type");
+ }
+ scan(TOK_IDENT, &tok);
+ plist->proc_name = tok.str;
+ scan(TOK_LPAREN, &tok);
+ get_type(&plist->arg_prefix, &plist->arg_type, DEF_PROGRAM);
+ if (streq(plist->arg_type, "opaque")) {
+ error("illegal argument type");
+ }
+ scan(TOK_RPAREN, &tok);
+ scan(TOK_EQUAL, &tok);
+ scan_num(&tok);
+ scan(TOK_SEMICOLON, &tok);
+ plist->proc_num = tok.str;
+ *ptailp = plist;
+ ptailp = &plist->next;
+ peek(&tok);
+ } while (tok.kind != TOK_RBRACE);
+ *vtailp = vlist;
+ vtailp = &vlist->next;
+ scan(TOK_RBRACE, &tok);
+ scan(TOK_EQUAL, &tok);
+ scan_num(&tok);
+ vlist->vers_num = tok.str;
+ scan(TOK_SEMICOLON, &tok);
+ scan2(TOK_VERSION, TOK_RBRACE, &tok);
+ } while (tok.kind == TOK_VERSION);
+ scan(TOK_EQUAL, &tok);
+ scan_num(&tok);
+ defp->def.pr.prog_num = tok.str;
+ *vtailp = NULL;
+}
+
+static
+def_enum(defp)
+ definition *defp;
+{
+ token tok;
+ enumval_list *elist;
+ enumval_list **tailp;
+
+ defp->def_kind = DEF_ENUM;
+ scan(TOK_IDENT, &tok);
+ defp->def_name = tok.str;
+ scan(TOK_LBRACE, &tok);
+ tailp = &defp->def.en.vals;
+ do {
+ scan(TOK_IDENT, &tok);
+ elist = ALLOC(enumval_list);
+ elist->name = tok.str;
+ elist->assignment = NULL;
+ scan3(TOK_COMMA, TOK_RBRACE, TOK_EQUAL, &tok);
+ if (tok.kind == TOK_EQUAL) {
+ scan_num(&tok);
+ elist->assignment = tok.str;
+ scan2(TOK_COMMA, TOK_RBRACE, &tok);
+ }
+ *tailp = elist;
+ tailp = &elist->next;
+ } while (tok.kind != TOK_RBRACE);
+ *tailp = NULL;
+}
+
+static
+def_const(defp)
+ definition *defp;
+{
+ token tok;
+
+ defp->def_kind = DEF_CONST;
+ scan(TOK_IDENT, &tok);
+ defp->def_name = tok.str;
+ scan(TOK_EQUAL, &tok);
+ scan2(TOK_IDENT, TOK_STRCONST, &tok);
+ defp->def.co = tok.str;
+}
+
+static
+def_union(defp)
+ definition *defp;
+{
+ token tok;
+ declaration dec;
+ case_list *cases;
+ case_list **tailp;
+
+ defp->def_kind = DEF_UNION;
+ scan(TOK_IDENT, &tok);
+ defp->def_name = tok.str;
+ scan(TOK_SWITCH, &tok);
+ scan(TOK_LPAREN, &tok);
+ get_declaration(&dec, DEF_UNION);
+ defp->def.un.enum_decl = dec;
+ tailp = &defp->def.un.cases;
+ scan(TOK_RPAREN, &tok);
+ scan(TOK_LBRACE, &tok);
+ scan(TOK_CASE, &tok);
+ while (tok.kind == TOK_CASE) {
+ scan(TOK_IDENT, &tok);
+ cases = ALLOC(case_list);
+ cases->case_name = tok.str;
+ scan(TOK_COLON, &tok);
+ get_declaration(&dec, DEF_UNION);
+ cases->case_decl = dec;
+ *tailp = cases;
+ tailp = &cases->next;
+ scan(TOK_SEMICOLON, &tok);
+ scan3(TOK_CASE, TOK_DEFAULT, TOK_RBRACE, &tok);
+ }
+ *tailp = NULL;
+ if (tok.kind == TOK_DEFAULT) {
+ scan(TOK_COLON, &tok);
+ get_declaration(&dec, DEF_UNION);
+ defp->def.un.default_decl = ALLOC(declaration);
+ *defp->def.un.default_decl = dec;
+ scan(TOK_SEMICOLON, &tok);
+ scan(TOK_RBRACE, &tok);
+ } else {
+ defp->def.un.default_decl = NULL;
+ }
+}
+
+
+static
+def_typedef(defp)
+ definition *defp;
+{
+ declaration dec;
+
+ defp->def_kind = DEF_TYPEDEF;
+ get_declaration(&dec, DEF_TYPEDEF);
+ defp->def_name = dec.name;
+ defp->def.ty.old_prefix = dec.prefix;
+ defp->def.ty.old_type = dec.type;
+ defp->def.ty.rel = dec.rel;
+ defp->def.ty.array_max = dec.array_max;
+}
+
+
+static
+get_declaration(dec, dkind)
+ declaration *dec;
+ defkind dkind;
+{
+ token tok;
+
+ get_type(&dec->prefix, &dec->type, dkind);
+ dec->rel = REL_ALIAS;
+ if (streq(dec->type, "void")) {
+ return;
+ }
+ scan2(TOK_STAR, TOK_IDENT, &tok);
+ if (tok.kind == TOK_STAR) {
+ dec->rel = REL_POINTER;
+ scan(TOK_IDENT, &tok);
+ }
+ dec->name = tok.str;
+ if (peekscan(TOK_LBRACKET, &tok)) {
+ if (dec->rel == REL_POINTER) {
+ error("no array-of-pointer declarations -- use typedef");
+ }
+ dec->rel = REL_VECTOR;
+ scan_num(&tok);
+ dec->array_max = tok.str;
+ scan(TOK_RBRACKET, &tok);
+ } else if (peekscan(TOK_LANGLE, &tok)) {
+ if (dec->rel == REL_POINTER) {
+ error("no array-of-pointer declarations -- use typedef");
+ }
+ dec->rel = REL_ARRAY;
+ if (peekscan(TOK_RANGLE, &tok)) {
+ dec->array_max = "~0"; /* unspecified size, use max */
+ } else {
+ scan_num(&tok);
+ dec->array_max = tok.str;
+ scan(TOK_RANGLE, &tok);
+ }
+ }
+ if (streq(dec->type, "opaque")) {
+ if (dec->rel != REL_ARRAY && dec->rel != REL_VECTOR) {
+ error("array declaration expected");
+ }
+ } else if (streq(dec->type, "string")) {
+ if (dec->rel != REL_ARRAY) {
+ error("variable-length array declaration expected");
+ }
+ }
+}
+
+
+static
+get_type(prefixp, typep, dkind)
+ char **prefixp;
+ char **typep;
+ defkind dkind;
+{
+ token tok;
+
+ *prefixp = NULL;
+ get_token(&tok);
+ switch (tok.kind) {
+ case TOK_IDENT:
+ *typep = tok.str;
+ break;
+ case TOK_STRUCT:
+ case TOK_ENUM:
+ case TOK_UNION:
+ *prefixp = tok.str;
+ scan(TOK_IDENT, &tok);
+ *typep = tok.str;
+ break;
+ case TOK_UNSIGNED:
+ unsigned_dec(typep);
+ break;
+ case TOK_SHORT:
+ *typep = "short";
+ (void) peekscan(TOK_INT, &tok);
+ break;
+ case TOK_LONG:
+ *typep = "long";
+ (void) peekscan(TOK_INT, &tok);
+ break;
+ case TOK_VOID:
+ if (dkind != DEF_UNION && dkind != DEF_PROGRAM) {
+ error("voids allowed only inside union and program definitions");
+ }
+ *typep = tok.str;
+ break;
+ case TOK_STRING:
+ case TOK_OPAQUE:
+ case TOK_CHAR:
+ case TOK_INT:
+ case TOK_FLOAT:
+ case TOK_DOUBLE:
+ case TOK_BOOL:
+ *typep = tok.str;
+ break;
+ default:
+ error("expected type specifier");
+ }
+}
+
+
+static
+unsigned_dec(typep)
+ char **typep;
+{
+ token tok;
+
+ peek(&tok);
+ switch (tok.kind) {
+ case TOK_CHAR:
+ get_token(&tok);
+ *typep = "u_char";
+ break;
+ case TOK_SHORT:
+ get_token(&tok);
+ *typep = "u_short";
+ (void) peekscan(TOK_INT, &tok);
+ break;
+ case TOK_LONG:
+ get_token(&tok);
+ *typep = "u_long";
+ (void) peekscan(TOK_INT, &tok);
+ break;
+ case TOK_INT:
+ get_token(&tok);
+ *typep = "u_int";
+ break;
+ default:
+ *typep = "u_int";
+ break;
+ }
+}
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