parser.cpp

Shorthand是一个强大的脚本语言

    break;}
case 30:
{ yyval.exec = NEW2(ShhLocalDecl, yyvsp[-2].str, yyvsp[0].exp); ;
    break;}
case 31:
{ yyval.batch = NEW(ShhBatch, yyvsp[0].exec); ;
    break;}
case 32:
{ yyval.batch = yyvsp[-2].batch; yyval.batch->add(yyvsp[0].exec); ;
    break;}
case 33:
{ yyval.call = NEW2(ShhFunctionCall, yyvsp[-3].str, yyvsp[-1].explist); ;
    break;}
case 34:
{ yyval.exec = NEW2(ShhGrid, yyvsp[-4].str, yyvsp[-2].batch); ;
    break;}
case 35:
{ yyval.exec = NEW3(ShhGrid, yyvsp[-6].str, yyvsp[-2].batch, yyvsp[-4].exp); ;
    break;}
case 36:
{ yyval.exec = NEW4(ShhGrid, yyvsp[-8].str, yyvsp[-2].batch, yyvsp[-6].exp, yyvsp[-4].exp); ;
    break;}
case 37:
{ yyval.exec = NEW2(ShhWhileLoop, yyvsp[-3].pred, yyvsp[-2].batch); ;
    break;}
case 38:
{ yyval.exec = NEW4(ShhForLoop, yyvsp[-7].str, yyvsp[-5].exp, yyvsp[-3].exp, yyvsp[-2].batch); ;
    break;}
case 39:
{ yyval.exec = NEW4(ShhForeachLoop, yyvsp[-5].exp, NULL, yyvsp[-3].exp, yyvsp[-2].batch); ;
    break;}
case 40:
{ yyval.exec = NEW4(ShhForeachLoop, yyvsp[-7].exp, yyvsp[-5].exp, yyvsp[-3].exp, yyvsp[-2].batch); ;
    break;}
case 41:
{ yyval.explist = ShhExpressionList::null; ;
    break;}
case 42:
{ yyval.explist = yyvsp[0].explist; ;
    break;}
case 43:
{ yyval.params = NEW0(ShhParameterList); yyval.params->add(new ShhParameter(yyvsp[0].str)); ;
    break;}
case 44:
{ yyval.params = yyvsp[-2].params; yyval.params->add(new ShhParameter(yyvsp[0].str)); ;
    break;}
case 45:
{ yyval.params = NEW0(ShhParameterList); ;
    break;}
case 46:
{ yyval.params = yyvsp[0].params; ;
    break;}
case 47:
{ yyval.explist = NEW(ShhExpressionList, yyvsp[0].exp); ;
    break;}
case 48:
{ yyval.explist = yyvsp[-2].explist; yyvsp[-2].explist->add(yyvsp[0].exp); ;
    break;}
case 49:
{ yyval.exp = NEW(ShhConstant, yyvsp[0].num); ;
    break;}
case 50:
{ yyval.exp = NEW(ShhConstant, yyvsp[0].fnum); ;
    break;}
case 51:
{ yyval.exp = NEW(ShhConstant, ShhValue::null()); ;
    break;}
case 52:
{ yyval.exp = NEW(ShhConstant, yyvsp[0].str); ;
    break;}
case 53:
{ yyval.exp = NEW2(ShhFunctionCall, yyvsp[-3].str, yyvsp[-1].explist); ;
    break;}
case 54:
{ yyval.exp = NEW(ShhVariableRef, yyvsp[0].str); ;
    break;}
case 55:
{ yyval.exp = NEW2(ShhPropertyRef, yyvsp[-2].exp, yyvsp[0].str ); ;
    break;}
case 56:
{ yyval.exp = NEW3(ShhValueMethodCall, yyvsp[-5].exp, yyvsp[-3].str, yyvsp[-1].explist); ;
    break;}
case 57:
{ yyval.exp = yyvsp[-1].exp; ;
    break;}
case 58:
{ yyval.exp = NEW3(ShhArithmetic, '+', yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 59:
{ yyval.exp = NEW3(ShhArithmetic, '-', yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 60:
{ yyval.exp = NEW3(ShhArithmetic, '*', yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 61:
{ yyval.exp = NEW3(ShhArithmetic, '/', yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 62:
{ yyval.exp = NEW3(ShhArithmetic, '%', yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 63:
{ yyval.exp = NEW3(ShhArithmetic, '-', NEW(ShhConstant, 0), yyvsp[0].exp); ;
    break;}
case 64:
{ yyval.exp = NEW2(ShhConcat, yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 65:
{ yyval.exp = NEW2(ShhObjectCtor, yyvsp[0].str, NULL); ;
    break;}
case 66:
{ yyval.exp = NEW2(ShhObjectCtor, yyvsp[0].call->name(), yyvsp[0].call->args()); ;
    break;}
case 67:
{ yyval.exp = NEW2(ShhArrayElement, yyvsp[-3].exp, yyvsp[-1].exp); ;
    break;}
case 68:
{ yyval.exp = NEW2(ShhHashElement, yyvsp[-3].exp, yyvsp[-1].exp); ;
    break;}
case 69:
{ yyval.pred = NEW3(ShhComparison, '<', yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 70:
{ yyval.pred = NEW3(ShhComparison, '>', yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 71:
{ yyval.pred = NEW3(ShhComparison, '=', yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 72:
{ yyval.pred = NEW3(ShhComparison, LE, yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 73:
{ yyval.pred = NEW3(ShhComparison, GE, yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 74:
{ yyval.pred = NEW3(ShhComparison, NE, yyvsp[-2].exp, yyvsp[0].exp); ;
    break;}
case 75:
{ yyval.pred = yyvsp[-1].pred; ;
    break;}
case 76:
{ yyval.pred = NEW3(ShhBooleanArithmetic, AND, yyvsp[-2].pred, yyvsp[0].pred); ;
    break;}
case 77:
{ yyval.pred = NEW3(ShhBooleanArithmetic, OR,  yyvsp[-2].pred, yyvsp[0].pred); ;
    break;}
case 78:
{ yyval.pred = NEW3(ShhBooleanArithmetic, NOT, yyvsp[0].pred, NULL); ;
    break;}
case 79:
{ yyval.pred = NEW3(ShhComparison, NE, NEW(ShhConstant, 0), yyvsp[0].exp); ;
    break;}
case 80:
{ yyval.exec = NEW3(ShhConditionBlock, yyvsp[-3].pred, yyvsp[-1].batch, yyvsp[0].exec); ;
    break;}
case 81:
{ yyval.exec = NEW3(ShhConditionBlock, yyvsp[-2].pred, NULL, yyvsp[0].exec); ;
    break;}
case 82:
{ yyval.exec = NEW0(ShhNOP); ;
    break;}
case 83:
{ yyval.exec = yyvsp[-2].batch; ;
    break;}
case 84:
{ yyval.exec = NEW3(ShhConditionBlock, yyvsp[-3].pred, yyvsp[-1].batch, yyvsp[0].exec); ;
    break;}
}
   /* the action file gets copied in in place of this dollarsign */


  yyvsp -= yylen;
  yyssp -= yylen;
#ifdef YYLSP_NEEDED
  yylsp -= yylen;
#endif

#if YYDEBUG != 0
  if (yydebug)
    {
      short *ssp1 = yyss - 1;
      fprintf (stderr, "state stack now");
      while (ssp1 != yyssp)
	fprintf (stderr, " %d", *++ssp1);
      fprintf (stderr, "\n");
    }
#endif

  *++yyvsp = yyval;

#ifdef YYLSP_NEEDED
  yylsp++;
  if (yylen == 0)
    {
      yylsp->first_line = yylloc.first_line;
      yylsp->first_column = yylloc.first_column;
      yylsp->last_line = (yylsp-1)->last_line;
      yylsp->last_column = (yylsp-1)->last_column;
      yylsp->text = 0;
    }
  else
    {
      yylsp->last_line = (yylsp+yylen-1)->last_line;
      yylsp->last_column = (yylsp+yylen-1)->last_column;
    }
#endif

  /* Now "shift" the result of the reduction.
     Determine what state that goes to,
     based on the state we popped back to
     and the rule number reduced by.  */

  yyn = yyr1[yyn];

  yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
  if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
    yystate = yytable[yystate];
  else
    yystate = yydefgoto[yyn - YYNTBASE];

  goto yynewstate;

yyerrlab:   /* here on detecting error */

  if (! yyerrstatus)
    /* If not already recovering from an error, report this error.  */
    {
      ++yynerrs;

#ifdef YYERROR_VERBOSE
      yyn = yypact[yystate];

      if (yyn > YYFLAG && yyn < YYLAST)
	{
	  int size = 0;
	  char *msg;
	  int x, count;

	  count = 0;
	  /* Start X at -yyn if nec to avoid negative indexes in yycheck.  */
	  for (x = (yyn < 0 ? -yyn : 0);
	       x < (sizeof(yytname) / sizeof(char *)); x++)
	    if (yycheck[x + yyn] == x)
	      size += strlen(yytname[x]) + 15, count++;
	  msg = (char *) malloc(size + 15);
	  if (msg != 0)
	    {
	      strcpy(msg, "parse error");

	      if (count < 5)
		{
		  count = 0;
		  for (x = (yyn < 0 ? -yyn : 0);
		       x < (sizeof(yytname) / sizeof(char *)); x++)
		    if (yycheck[x + yyn] == x)
		      {
			strcat(msg, count == 0 ? ", expecting `" : " or `");
			strcat(msg, yytname[x]);
			strcat(msg, "'");
			count++;
		      }
		}
	      yyerror(msg);
	      free(msg);
	    }
	  else
	    yyerror ("parse error; also virtual memory exceeded");
	}
      else
#endif /* YYERROR_VERBOSE */
	yyerror("parse error");
    }

  goto yyerrlab1;
yyerrlab1:   /* here on error raised explicitly by an action */

  if (yyerrstatus == 3)
    {
      /* if just tried and failed to reuse lookahead token after an error, discard it.  */

      /* return failure if at end of input */
      if (yychar == YYEOF)
	YYABORT;

#if YYDEBUG != 0
      if (yydebug)
	fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
#endif

      yychar = YYEMPTY;
    }

  /* Else will try to reuse lookahead token
     after shifting the error token.  */

  yyerrstatus = 3;		/* Each real token shifted decrements this */

  goto yyerrhandle;

yyerrdefault:  /* current state does not do anything special for the error token. */

#if 0
  /* This is wrong; only states that explicitly want error tokens
     should shift them.  */
  yyn = yydefact[yystate];  /* If its default is to accept any token, ok.  Otherwise pop it.*/
  if (yyn) goto yydefault;
#endif

yyerrpop:   /* pop the current state because it cannot handle the error token */

  if (yyssp == yyss) YYABORT;
  yyvsp--;
  yystate = *--yyssp;
#ifdef YYLSP_NEEDED
  yylsp--;
#endif

#if YYDEBUG != 0
  if (yydebug)
    {
      short *ssp1 = yyss - 1;
      fprintf (stderr, "Error: state stack now");
      while (ssp1 != yyssp)
	fprintf (stderr, " %d", *++ssp1);
      fprintf (stderr, "\n");
    }
#endif

yyerrhandle:

  yyn = yypact[yystate];
  if (yyn == YYFLAG)
    goto yyerrdefault;

  yyn += YYTERROR;
  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
    goto yyerrdefault;

  yyn = yytable[yyn];
  if (yyn < 0)
    {
      if (yyn == YYFLAG)
	goto yyerrpop;
      yyn = -yyn;
      goto yyreduce;
    }
  else if (yyn == 0)
    goto yyerrpop;

  if (yyn == YYFINAL)
    YYACCEPT;

#if YYDEBUG != 0
  if (yydebug)
    fprintf(stderr, "Shifting error token, ");
#endif

  *++yyvsp = yylval;
#ifdef YYLSP_NEEDED
  *++yylsp = yylloc;
#endif

  yystate = yyn;
  goto yynewstate;

 yyacceptlab:
  /* YYACCEPT comes here.  */
  if (yyfree_stacks)
    {
      free (yyss);
      free (yyvs);
#ifdef YYLSP_NEEDED
      free (yyls);
#endif
    }
  return 0;

 yyabortlab:
  /* YYABORT comes here.  */
  if (yyfree_stacks)
    {
      free (yyss);
      free (yyvs);
#ifdef YYLSP_NEEDED
      free (yyls);
#endif
    }
  return 1;
}