Esempio n. 1
0
File: width.cpp Progetto: Limsik/e17
/**
 * Scan backwards to find the most appropriate spot to split the line
 * and insert a newline.
 *
 * See if this needs special function handling.
 * Scan backwards and find the best token for the split.
 *
 * @param start The first chunk that exceeded the limit
 */
static void split_line(chunk_t *start)
{
   LOG_FMT(LSPLIT, "%s: line %d, col %d token:%s[%s] (IN_FUNC=%d) ",
           __func__, start->orig_line, start->column, start->str.c_str(),
           get_token_name(start->type),
           (start->flags & (PCF_IN_FCN_DEF | PCF_IN_FCN_CALL)) != 0);

   /**
    * break at maximum line length if indent_continue is absolute
    */
   if (cpd.settings[UO_indent_continue].n < 0)
   {
   }
   /* Check to see if we are in a for statement */
   else if ((start->flags & PCF_IN_FOR) != 0)
   {
      LOG_FMT(LSPLIT, " ** FOR SPLIT **\n");
      split_for_stmt(start);
      if (!is_past_width(start))
      {
         return;
      }
      LOG_FMT(LSPLIT, "%s: for split didn't work\n", __func__);
   }

   /* If this is in a function call or prototype, split on commas or right
    * after the open paren
    */
   else if (((start->flags & PCF_IN_FCN_DEF) != 0) ||
            ((start->level == (start->brace_level + 1)) &&
             ((start->flags & PCF_IN_FCN_CALL) != 0)))
   {
      LOG_FMT(LSPLIT, " ** FUNC SPLIT **\n");

      if (cpd.settings[UO_ls_func_split_full].b)
      {
         split_fcn_params_full(start);
         if (!is_past_width(start))
         {
            return;
         }
      }
      split_fcn_params(start);
      if (!is_past_width(start))
      {
         return;
      }
      LOG_FMT(LSPLIT, "%s: func split didn't work\n", __func__);
   }

   /**
    * Try to find the best spot to split the line
    */
   cw_entry ent;

   memset(&ent, 0, sizeof(ent));
   chunk_t *pc = start;
   chunk_t *prev;

   while (((pc = chunk_get_prev(pc)) != NULL) && !chunk_is_newline(pc))
   {
      if (pc->type != CT_SPACE)
      {
         try_split_here(ent, pc);
         // break at maximum line length if indent_continue is absolute
         if ((ent.pc != NULL) && (cpd.settings[UO_indent_continue].n < 0))
             break;
      }
   }

   if (ent.pc == NULL)
   {
      LOG_FMT(LSPLIT, "%s: TRY_SPLIT yielded NO SOLUTION for line %d at %s [%s]\n",
              __func__, start->orig_line, start->str.c_str(), get_token_name(start->type));
   }
   else
   {
      LOG_FMT(LSPLIT, "%s: TRY_SPLIT yielded '%s' [%s] on line %d\n", __func__,
              ent.pc->str.c_str(), get_token_name(ent.pc->type), ent.pc->orig_line);
   }

   /* Break before the token instead of after it according to the pos_xxx rules */
   if ((chunk_is_token(ent.pc, CT_ARITH) &&
        (cpd.settings[UO_pos_arith].tp & TP_LEAD)) ||
       (chunk_is_token(ent.pc, CT_ASSIGN) &&
        (cpd.settings[UO_pos_assign].tp & TP_LEAD)) ||
       (chunk_is_token(ent.pc, CT_COMPARE) &&
        (cpd.settings[UO_pos_compare].tp & TP_LEAD)) ||
       ((chunk_is_token(ent.pc, CT_COND_COLON) ||
         chunk_is_token(ent.pc, CT_QUESTION)) &&
        (cpd.settings[UO_pos_conditional].tp & TP_LEAD)) ||
       (chunk_is_token(ent.pc, CT_BOOL) &&
        (cpd.settings[UO_pos_bool].tp & TP_LEAD)))
   {
      pc = ent.pc;
   }
   else
   {
      pc = chunk_get_next(ent.pc);
   }
   if (pc == NULL)
   {
      pc = start;
      /* Don't break before a close, comma, or colon */
      if ((start->type == CT_PAREN_CLOSE) ||
          (start->type == CT_PAREN_OPEN) ||
          (start->type == CT_FPAREN_CLOSE) ||
          (start->type == CT_FPAREN_OPEN) ||
          (start->type == CT_SPAREN_CLOSE) ||
          (start->type == CT_SPAREN_OPEN) ||
          (start->type == CT_ANGLE_CLOSE) ||
          (start->type == CT_BRACE_CLOSE) ||
          (start->type == CT_COMMA) ||
          (start->type == CT_SEMICOLON) ||
          (start->type == CT_VSEMICOLON) ||
          (start->len() == 0))
      {
         LOG_FMT(LSPLIT, " ** NO GO **\n");

         /*TODO: Add in logic to handle 'hard' limits by backing up a token */
         return;
      }
   }

   /* add a newline before pc */
   prev = chunk_get_prev(pc);
   if ((prev != NULL) && !chunk_is_newline(pc) && !chunk_is_newline(prev))
   {
      int plen = (pc->len() < 5) ? pc->len() : 5;
      int slen = (start->len() < 5) ? start->len() : 5;
      LOG_FMT(LSPLIT, " '%.*s' [%s], started on token '%.*s' [%s]\n",
              plen, pc->str.c_str(), get_token_name(pc->type),
              slen, start->str.c_str(), get_token_name(start->type));

      split_before_chunk(pc);
   }
}
Esempio n. 2
0
static bool split_line(chunk_t *start)
{
   LOG_FUNC_ENTRY();
   LOG_FMT(LSPLIT, "%s(%d): start->text() '%s', orig_line is %zu, orig_col is %zu, type is %s\n",
           __func__, __LINE__, start->text(), start->orig_line, start->orig_col, get_token_name(start->type));
   LOG_FMT(LSPLIT, "   start->flags ");
   log_pcf_flags(LSPLIT, start->flags);
   LOG_FMT(LSPLIT, "   start->parent_type %s, (PCF_IN_FCN_DEF is %s), (PCF_IN_FCN_CALL is %s)\n",
           get_token_name(start->parent_type),
           ((start->flags & (PCF_IN_FCN_DEF)) != 0) ? "TRUE" : "FALSE",
           ((start->flags & (PCF_IN_FCN_CALL)) != 0) ? "TRUE" : "FALSE");

   // break at maximum line length if ls_code_width is true
   if (start->flags & PCF_ONE_LINER)
   {
      LOG_FMT(LSPLIT, "%s(%d): ** ONCE LINER SPLIT **\n", __func__, __LINE__);
      undo_one_liner(start);
      newlines_cleanup_braces(false);
      // Issue #1352
      cpd.changes++;
      return(false);
   }

   LOG_FMT(LSPLIT, "%s(%d):\n", __func__, __LINE__);
   if (cpd.settings[UO_ls_code_width].b)
   {
   }
   // Check to see if we are in a for statement
   else if (start->flags & PCF_IN_FOR)
   {
      LOG_FMT(LSPLIT, " ** FOR SPLIT **\n");
      split_for_stmt(start);
      if (!is_past_width(start))
      {
         return(true);
      }
      LOG_FMT(LSPLIT, "%s(%d): for split didn't work\n", __func__, __LINE__);
   }

   /*
    * If this is in a function call or prototype, split on commas or right
    * after the open parenthesis
    */
   else if (  (start->flags & PCF_IN_FCN_DEF)
           || start->parent_type == CT_FUNC_PROTO            // Issue #1169
           || (  (start->level == (start->brace_level + 1))
              && (start->flags & PCF_IN_FCN_CALL)))
   {
      LOG_FMT(LSPLIT, " ** FUNC SPLIT **\n");

      if (cpd.settings[UO_ls_func_split_full].b)
      {
         split_fcn_params_full(start);
         if (!is_past_width(start))
         {
            return(true);
         }
      }
      split_fcn_params(start);
      return(true);
   }

   /*
    * If this is in a template, split on commas, Issue #1170
    */
   else if (start->flags & PCF_IN_TEMPLATE)
   {
      LOG_FMT(LSPLIT, " ** TEMPLATE SPLIT **\n");
      split_template(start);
      return(true);
   }

   LOG_FMT(LSPLIT, "%s(%d):\n", __func__, __LINE__);
   // Try to find the best spot to split the line
   cw_entry ent;

   memset(&ent, 0, sizeof(ent));
   chunk_t *pc = start;
   chunk_t *prev;

   while (((pc = chunk_get_prev(pc)) != nullptr) && !chunk_is_newline(pc))
   {
      LOG_FMT(LSPLIT, "%s(%d): at %s, orig_line=%zu, orig_col=%zu\n",
              __func__, __LINE__, pc->text(), pc->orig_line, pc->orig_col);
      if (pc->type != CT_SPACE)
      {
         try_split_here(ent, pc);
         // break at maximum line length
         if (ent.pc != nullptr && (cpd.settings[UO_ls_code_width].b))
         {
            break;
         }
      }
   }

   if (ent.pc == nullptr)
   {
      LOG_FMT(LSPLIT, "\n%s(%d):    TRY_SPLIT yielded NO SOLUTION for orig_line %zu at '%s' [%s]\n",
              __func__, __LINE__, start->orig_line, start->text(), get_token_name(start->type));
   }
   else
   {
      LOG_FMT(LSPLIT, "\n%s(%d):    TRY_SPLIT yielded '%s' [%s] on orig_line %zu\n",
              __func__, __LINE__, ent.pc->text(), get_token_name(ent.pc->type), ent.pc->orig_line);
      LOG_FMT(LSPLIT, "%s(%d): ent at '%s', orig_col is %zu\n",
              __func__, __LINE__, ent.pc->text(), ent.pc->orig_col);
   }

   // Break before the token instead of after it according to the pos_xxx rules
   if (ent.pc == nullptr)
   {
      pc = nullptr;
   }
   else
   {
      if (  (  (  chunk_is_token(ent.pc, CT_ARITH)
               || chunk_is_token(ent.pc, CT_CARET))
            && (cpd.settings[UO_pos_arith].tp & TP_LEAD))
         || (  chunk_is_token(ent.pc, CT_ASSIGN)
            && (cpd.settings[UO_pos_assign].tp & TP_LEAD))
         || (  chunk_is_token(ent.pc, CT_COMPARE)
            && (cpd.settings[UO_pos_compare].tp & TP_LEAD))
         || (  (  chunk_is_token(ent.pc, CT_COND_COLON)
               || chunk_is_token(ent.pc, CT_QUESTION))
            && (cpd.settings[UO_pos_conditional].tp & TP_LEAD))
         || (  chunk_is_token(ent.pc, CT_BOOL)
            && (cpd.settings[UO_pos_bool].tp & TP_LEAD)))
      {
         pc = ent.pc;
      }
      else
      {
         pc = chunk_get_next(ent.pc);
      }
      LOG_FMT(LSPLIT, "%s(%d): at '%s', orig_col is %zu\n",
              __func__, __LINE__, pc->text(), pc->orig_col);
   }

   if (pc == nullptr)
   {
      pc = start;
      // Don't break before a close, comma, or colon
      if (  start->type == CT_PAREN_CLOSE
         || start->type == CT_PAREN_OPEN
         || start->type == CT_FPAREN_CLOSE
         || start->type == CT_FPAREN_OPEN
         || start->type == CT_SPAREN_CLOSE
         || start->type == CT_SPAREN_OPEN
         || start->type == CT_ANGLE_CLOSE
         || start->type == CT_BRACE_CLOSE
         || start->type == CT_COMMA
         || start->type == CT_SEMICOLON
         || start->type == CT_VSEMICOLON
         || start->len() == 0)
      {
         LOG_FMT(LSPLIT, " ** NO GO **\n");

         // TODO: Add in logic to handle 'hard' limits by backing up a token
         return(true);
      }
   }

   // add a newline before pc
   prev = chunk_get_prev(pc);
   if (  prev != nullptr
      && !chunk_is_newline(pc)
      && !chunk_is_newline(prev))
   {
      //int plen = (pc->len() < 5) ? pc->len() : 5;
      //int slen = (start->len() < 5) ? start->len() : 5;
      //LOG_FMT(LSPLIT, " '%.*s' [%s], started on token '%.*s' [%s]\n",
      //        plen, pc->text(), get_token_name(pc->type),
      //        slen, start->text(), get_token_name(start->type));
      LOG_FMT(LSPLIT, "%s(%d): text() '%s', type [%s], started on token '%s', type [%s]\n",
              __func__, __LINE__, pc->text(), get_token_name(pc->type),
              start->text(), get_token_name(start->type));

      split_before_chunk(pc);
   }
   return(true);
} // split_line