157 return new MemberItem(member, nonvirtual);
158 }
159
160 /** Make an item representing a literal.
161 * @param type The literal's type.
162 * @param value The literal's value.
163 */
164 Item makeImmediateItem(Type type, Object value) {
165 return new ImmediateItem(type, value);
166 }
167
168 /** Make an item representing an assignment expression.
169 * @param lhs The item representing the assignment's left hand side.
170 */
171 Item makeAssignItem(Item lhs) {
172 return new AssignItem(lhs);
173 }
174
175 /** Make an item representing a conditional or unconditional jump.
176 * @param opcode The jump's opcode.
177 * @param trueJumps A chain encomassing all jumps that can be taken
178 * if the condition evaluates to true.
179 * @param falseJumps A chain encomassing all jumps that can be taken
180 * if the condition evaluates to false.
181 */
182 CondItem makeCondItem(int opcode, Chain trueJumps, Chain falseJumps) {
183 return new CondItem(opcode, trueJumps, falseJumps);
184 }
185
186 /** Make an item representing a conditional or unconditional jump.
187 * @param opcode The jump's opcode.
188 */
189 CondItem makeCondItem(int opcode) {
190 return makeCondItem(opcode, null, null);
191 }
192
193 /** The base class of all items, which implements default behavior.
194 */
195 abstract class Item {
196
197 /** The type code of values represented by this item.
198 */
199 int typecode;
737 lhs.store();
738 }
739
740 void stash(int toscode) {
741 Assert.error();
742 }
743
744 int width() {
745 return lhs.width() + Code.width(typecode);
746 }
747
748 public String toString() {
749 return "assign(lhs = " + lhs + ")";
750 }
751 }
752
753 /** An item representing a conditional or unconditional jump.
754 */
755 class CondItem extends Item {
756
757 /** A chain encomassing all jumps that can be taken
758 * if the condition evaluates to true.
759 */
760 Chain trueJumps;
761
762 /** A chain encomassing all jumps that can be taken
763 * if the condition evaluates to false.
764 */
765 Chain falseJumps;
766
767 /** The jump's opcode.
768 */
769 int opcode;
770
771 /*
772 * An abstract syntax tree of this item. It is needed
773 * for branch entries in 'CharacterRangeTable' attribute.
774 */
775 JCTree tree;
776
777 CondItem(int opcode, Chain truejumps, Chain falsejumps) {
778 super(BYTEcode);
779 this.opcode = opcode;
780 this.trueJumps = truejumps;
781 this.falseJumps = falsejumps;
782 }
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157 return new MemberItem(member, nonvirtual);
158 }
159
160 /** Make an item representing a literal.
161 * @param type The literal's type.
162 * @param value The literal's value.
163 */
164 Item makeImmediateItem(Type type, Object value) {
165 return new ImmediateItem(type, value);
166 }
167
168 /** Make an item representing an assignment expression.
169 * @param lhs The item representing the assignment's left hand side.
170 */
171 Item makeAssignItem(Item lhs) {
172 return new AssignItem(lhs);
173 }
174
175 /** Make an item representing a conditional or unconditional jump.
176 * @param opcode The jump's opcode.
177 * @param trueJumps A chain encompassing all jumps that can be taken
178 * if the condition evaluates to true.
179 * @param falseJumps A chain encompassing all jumps that can be taken
180 * if the condition evaluates to false.
181 */
182 CondItem makeCondItem(int opcode, Chain trueJumps, Chain falseJumps) {
183 return new CondItem(opcode, trueJumps, falseJumps);
184 }
185
186 /** Make an item representing a conditional or unconditional jump.
187 * @param opcode The jump's opcode.
188 */
189 CondItem makeCondItem(int opcode) {
190 return makeCondItem(opcode, null, null);
191 }
192
193 /** The base class of all items, which implements default behavior.
194 */
195 abstract class Item {
196
197 /** The type code of values represented by this item.
198 */
199 int typecode;
737 lhs.store();
738 }
739
740 void stash(int toscode) {
741 Assert.error();
742 }
743
744 int width() {
745 return lhs.width() + Code.width(typecode);
746 }
747
748 public String toString() {
749 return "assign(lhs = " + lhs + ")";
750 }
751 }
752
753 /** An item representing a conditional or unconditional jump.
754 */
755 class CondItem extends Item {
756
757 /** A chain encompassing all jumps that can be taken
758 * if the condition evaluates to true.
759 */
760 Chain trueJumps;
761
762 /** A chain encompassing all jumps that can be taken
763 * if the condition evaluates to false.
764 */
765 Chain falseJumps;
766
767 /** The jump's opcode.
768 */
769 int opcode;
770
771 /*
772 * An abstract syntax tree of this item. It is needed
773 * for branch entries in 'CharacterRangeTable' attribute.
774 */
775 JCTree tree;
776
777 CondItem(int opcode, Chain truejumps, Chain falsejumps) {
778 super(BYTEcode);
779 this.opcode = opcode;
780 this.trueJumps = truejumps;
781 this.falseJumps = falsejumps;
782 }
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