grm.java

来自「tiger编译器的Java实现」· Java 代码 · 共 1,047 行 · 第 1/5 页
JAVA
1,047 行
          /*. . . . . . . . . . . . . . . . . . . .*/
          case 44: // expression ::= LPAREN expr_seq RPAREN 
            {
              Exp RESULT = null;
		int eleft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-1)).left;		int eright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-1)).right;		SeqExp e = (SeqExp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-1)).value;		 RESULT = e; 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 43: // expression ::= ID LPAREN RPAREN 
            {
              Exp RESULT = null;
		int ileft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int iright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		String i = (String)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		 RESULT = new CallExp(ileft,sym(i),null); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 42: // expression ::= ID LPAREN expr_list RPAREN 
            {
              Exp RESULT = null;
		int ileft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-3)).left;		int iright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-3)).right;		String i = (String)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-3)).value;		int eleft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-1)).left;		int eright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-1)).right;		ExpList e = (ExpList)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-1)).value;		 RESULT = new CallExp(ileft,sym(i),e); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-3)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 41: // expression ::= lvalue ASSIGN expression 
            {
              Exp RESULT = null;
		int lleft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int lright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		VarExp l = (VarExp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int eleft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int eright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new AssignExp(lleft,((VarExp)l).var,e); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 40: // expression ::= lvalue 
            {
              Exp RESULT = null;
		int lleft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int lright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		VarExp l = (VarExp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = l; 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 39: // expression ::= MINUS expression 
            {
              Exp RESULT = null;
		int mleft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-1)).left;		int mright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-1)).right;		Object m = (Object)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-1)).value;		int eleft = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int eright = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(mleft,new IntExp(mleft,0),OpExp.UMINUS,e); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-1)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 38: // expression ::= expression DIVIDE expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		Exp e1 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int e2left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int e2right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e2 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(e1left,e1,OpExp.DIV,e2); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 37: // expression ::= expression TIMES expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		Exp e1 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int e2left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int e2right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e2 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(e1left,e1,OpExp.MUL ,e2);
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 36: // expression ::= expression PLUS expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		Exp e1 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int e2left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int e2right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e2 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(e1left,e1,OpExp.PLUS,e2); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 35: // expression ::= expression MINUS expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		Exp e1 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int e2left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int e2right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e2 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(e1left,e1,OpExp.MINUS,e2); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 34: // expression ::= expression LT expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		Exp e1 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int e2left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int e2right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e2 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(e1left,e1,OpExp.LT,e2); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 33: // expression ::= expression LE expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		Exp e1 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int e2left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int e2right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e2 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(e1left,e1,OpExp.LE,e2); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 32: // expression ::= expression GT expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		Exp e1 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int e2left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int e2right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e2 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(e1left,e1,OpExp.GT,e2); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 31: // expression ::= expression GE expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).right;		Exp e1 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-2)).value;		int e2left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).left;		int e2right = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right;		Exp e2 = (Exp)((java_cup.runtime.Symbol) CUP$Grm$stack.elementAt(CUP$Grm$top-0)).value;		 RESULT = new OpExp(e1left,e1,OpExp.GE,e2); 
              CUP$Grm$result = new java_cup.runtime.Symbol(2/*expression*/, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left, ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-0)).right, RESULT);
            }
          return CUP$Grm$result;

          /*. . . . . . . . . . . . . . . . . . . .*/
          case 30: // expression ::= expression EQ expression 
            {
              Exp RESULT = null;
		int e1left = ((java_cup.runtime.Symbol)CUP$Grm$stack.elementAt(CUP$Grm$top-2)).left;		int e1right = ((java_cup.runtime.Symbo
grm.java - 源码说明

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