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glibc  2.9
Defines | Functions | Variables
rpc_parse.c File Reference
#include <stdio.h>
#include <string.h>
#include "rpc/types.h"
#include "rpc_scan.h"
#include "rpc_parse.h"
#include "rpc_util.h"
#include "proto.h"

Go to the source code of this file.

Defines

#define ARGNAME   "arg"

Functions

static void isdefined (definition *defp)
static void def_struct (definition *defp)
static void def_program (definition *defp)
static void def_enum (definition *defp)
static void def_const (definition *defp)
static void def_union (definition *defp)
static void check_type_name (const char *name, int new_type)
static void def_typedef (definition *defp)
static void get_declaration (declaration *dec, defkind dkind)
static void get_prog_declaration (declaration *dec, defkind dkind, int num)
static void get_type (const char **prefixp, const char **typep, defkind dkind)
static void unsigned_dec (const char **typep)
definition * get_definition (void)

Variables

static const char * reserved_words []
static const char * reserved_types []

Define Documentation

#define ARGNAME   "arg"

Definition at line 47 of file rpc_parse.c.


Function Documentation

static void check_type_name ( const char *  name,
int  new_type 
) [static]

Definition at line 411 of file rpc_parse.c.

{
  int i;
  char tmp[100];

  for (i = 0; reserved_words[i] != NULL; i++)
    {
      if (strcmp (name, reserved_words[i]) == 0)
       {
         sprintf (tmp,
              "illegal (reserved) name :\'%s\' in type definition", name);
         error (tmp);
       }
    }
  if (new_type)
    {
      for (i = 0; reserved_types[i] != NULL; i++)
       {
         if (strcmp (name, reserved_types[i]) == 0)
           {
             sprintf (tmp,
              "illegal (reserved) name :\'%s\' in type definition", name);
             error (tmp);
           }
       }
    }
}

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static void def_const ( definition *  defp) [static]

Definition at line 286 of file rpc_parse.c.

{
  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;
}

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static void def_enum ( definition *  defp) [static]

Definition at line 254 of file rpc_parse.c.

{
  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;
}

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static void def_program ( definition *  defp) [static]

Definition at line 140 of file rpc_parse.c.

{
  token tok;
  declaration dec;
  decl_list *decls;
  decl_list **tailp;
  version_list *vlist;
  version_list **vtailp;
  proc_list *plist;
  proc_list **ptailp;
  int num_args;
  bool_t isvoid = FALSE;    /* whether first argument is void */
  defp->def_kind = DEF_PROGRAM;
  scan (TOK_IDENT, &tok);
  defp->def_name = tok.str;
  scan (TOK_LBRACE, &tok);
  vtailp = &defp->def.pr.versions;
  tailp = &defp->def.st.decls;
  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
       {
         /* get result type */
         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 args - first one */
         num_args = 1;
         isvoid = FALSE;
         /* type of DEF_PROGRAM in the first
          * get_prog_declaration and DEF_STURCT in the next
          * allows void as argument if it is the only argument
          */
         get_prog_declaration (&dec, DEF_PROGRAM, num_args);
         if (streq (dec.type, "void"))
           isvoid = TRUE;
         decls = ALLOC (decl_list);
         plist->args.decls = decls;
         decls->decl = dec;
         tailp = &decls->next;
         /* get args */
         while (peekscan (TOK_COMMA, &tok))
           {
             num_args++;
             get_prog_declaration (&dec, DEF_STRUCT,
                                num_args);
             decls = ALLOC (decl_list);
             decls->decl = dec;
             *tailp = decls;
             if (streq (dec.type, "void"))
              isvoid = TRUE;
             tailp = &decls->next;
           }
         /* multiple arguments are only allowed in newstyle */
         if (!newstyle && num_args > 1)
           {
             error ("only one argument is allowed");
           }
         if (isvoid && num_args > 1)
           {
             error ("illegal use of void in program definition");
           }
         *tailp = NULL;
         scan (TOK_RPAREN, &tok);
         scan (TOK_EQUAL, &tok);
         scan_num (&tok);
         scan (TOK_SEMICOLON, &tok);
         plist->proc_num = tok.str;
         plist->arg_num = num_args;
         *ptailp = plist;
         ptailp = &plist->next;
         peek (&tok);
       }
      while (tok.kind != TOK_RBRACE);
      *ptailp = NULL;
      *vtailp = vlist;
      vtailp = &vlist->next;
      scan (TOK_RBRACE, &tok);
      scan (TOK_EQUAL, &tok);
      scan_num (&tok);
      vlist->vers_num = tok.str;
      /* make the argument structure name for each arg */
      for (plist = vlist->procs; plist != NULL;
          plist = plist->next)
       {
         plist->args.argname = make_argname (plist->proc_name,
                                         vlist->vers_num);
         /* free the memory ?? */
       }
      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;
}

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static void def_struct ( definition *  defp) [static]

Definition at line 111 of file rpc_parse.c.

{
  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;
}

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static void def_typedef ( definition *  defp) [static]

Definition at line 442 of file rpc_parse.c.

{
  declaration dec;

  defp->def_kind = DEF_TYPEDEF;
  get_declaration (&dec, DEF_TYPEDEF);
  defp->def_name = dec.name;
  check_type_name (dec.name, 1);
  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;
}

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static void def_union ( definition *  defp) [static]

Definition at line 299 of file rpc_parse.c.

{
  token tok;
  declaration dec;
  case_list *cases;
/*  case_list *tcase; */
  case_list **tailp;
#if 0
  int flag;
#endif

  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)
    {
      scan2 (TOK_IDENT, TOK_CHARCONST, &tok);
      cases = ALLOC (case_list);
      cases->case_name = tok.str;
      scan (TOK_COLON, &tok);
      /* now peek at next token */
#if 0
      flag = 0;
#endif
      if (peekscan (TOK_CASE, &tok))
       {

         do
           {
             scan2 (TOK_IDENT, TOK_CHARCONST, &tok);
             cases->contflag = 1;  /* continued case statement */
             *tailp = cases;
             tailp = &cases->next;
             cases = ALLOC (case_list);
             cases->case_name = tok.str;
             scan (TOK_COLON, &tok);

           }
         while (peekscan (TOK_CASE, &tok));
       }
#if 0
      else if (flag)
       {

         *tailp = cases;
         tailp = &cases->next;
         cases = ALLOC (case_list);
       };
#endif

      get_declaration (&dec, DEF_UNION);
      cases->case_decl = dec;
      cases->contflag = 0;  /* no continued case statement */
      *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;
    }
}

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static void get_declaration ( declaration *  dec,
defkind  dkind 
) [static]

Definition at line 457 of file rpc_parse.c.

{
  token tok;

  get_type (&dec->prefix, &dec->type, dkind);
  dec->rel = REL_ALIAS;
  if (streq (dec->type, "void"))
    {
      return;
    }

  check_type_name (dec->type, 0);

  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");
       }
    }
}

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definition* get_definition ( void  )

Definition at line 66 of file rpc_parse.c.

{
  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:
      free (defp);
      return (NULL);
    default:
      error ("definition keyword expected");
    }
  scan (TOK_SEMICOLON, &tok);
  isdefined (defp);
  return (defp);
}

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static void get_prog_declaration ( declaration *  dec,
defkind  dkind,
int  num 
) [static]

Definition at line 523 of file rpc_parse.c.

{
  token tok;
  char name[10];            /* argument name */

  if (dkind == DEF_PROGRAM)
    {
      peek (&tok);
      if (tok.kind == TOK_RPAREN)
       {                    /* no arguments */
         dec->rel = REL_ALIAS;
         dec->type = "void";
         dec->prefix = NULL;
         dec->name = NULL;
         return;
       }
    }
  get_type (&dec->prefix, &dec->type, dkind);
  dec->rel = REL_ALIAS;
  if (peekscan (TOK_IDENT, &tok))  /* optional name of argument */
    strcpy (name, tok.str);
  else
    sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */

  dec->name = (char *) strdup (name);

  if (streq (dec->type, "void"))
    {
      return;
    }

  if (streq (dec->type, "opaque"))
    {
      error ("opaque -- illegal argument type");
    }
  if (peekscan (TOK_STAR, &tok))
    {
      if (streq (dec->type, "string"))
       {
         error ("pointer to string not allowed in program arguments\n");
       }
      dec->rel = REL_POINTER;
      if (peekscan (TOK_IDENT, &tok))     /* optional name of argument */
       dec->name = strdup (tok.str);
    }
  if (peekscan (TOK_LANGLE, &tok))
    {
      if (!streq (dec->type, "string"))
       {
         error ("arrays cannot be declared as arguments to procedures -- 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, "string"))
    {
      if (dec->rel != REL_ARRAY)
       {                    /* .x specifies just string as
                             * type of argument
                             * - make it string<>
                             */
         dec->rel = REL_ARRAY;
         dec->array_max = "~0";    /* unspecified size, use max */
       }
    }
}

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static void get_type ( const char **  prefixp,
const char **  typep,
defkind  dkind 
) [static]

Definition at line 600 of file rpc_parse.c.

{
  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_HYPER:
      *typep = "quad_t";
      (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 with one argument");
       }
      *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");
    }
}

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static void isdefined ( definition *  defp) [static]

Definition at line 105 of file rpc_parse.c.

{
  STOREVAL (&defined, defp);
}

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static void unsigned_dec ( const char **  typep) [static]

Definition at line 655 of file rpc_parse.c.

{
  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_HYPER:
      get_token (&tok);
      *typep = "u_quad_t";
      (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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Variable Documentation

const char* reserved_types[] [static]
Initial value:
{
  "opaque",
  "string",
  NULL
}

Definition at line 399 of file rpc_parse.c.

const char* reserved_words[] [static]
Initial value:
{
  "array",
  "bytes",
  "destroy",
  "free",
  "getpos",
  "inline",
  "pointer",
  "reference",
  "setpos",
  "sizeof",
  "union",
  "vector",
  NULL
}

Definition at line 382 of file rpc_parse.c.