17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.lang.invoke;
27
28 import java.util.ArrayList;
29 import java.util.Arrays;
30 import static java.lang.invoke.LambdaForm.*;
31 import static java.lang.invoke.LambdaForm.BasicType.*;
32
33 /** Working storage for an LF that is being transformed.
34 * Similarly to a StringBuffer, the editing can take place in multiple steps.
35 */
36 final class LambdaFormBuffer {
37 private int arity, length;
38 private Name[] names;
39 private Name[] originalNames; // snapshot of pre-transaction names
40 private byte flags;
41 private int firstChange;
42 private Name resultName;
43 private String debugName;
44 private ArrayList<Name> dups;
45
46 private static final int F_TRANS = 0x10, F_OWNED = 0x03;
47
48 LambdaFormBuffer(LambdaForm lf) {
49 this(lf.arity, lf.names, lf.result);
50 debugName = lf.debugName;
51 assert(lf.nameRefsAreLegal());
52 }
53
54 private LambdaFormBuffer(int arity, Name[] names, int result) {
55 this.arity = arity;
56 setNames(names);
57 if (result == LAST_RESULT) result = length - 1;
58 if (result >= 0 && names[result].type != V_TYPE)
59 resultName = names[result];
60 }
61
62 private LambdaForm lambdaForm() {
63 assert(!inTrans()); // need endEdit call to tidy things up
64 return new LambdaForm(debugName, arity, nameArray(), resultIndex());
65 }
66
67 Name name(int i) {
68 assert(i < length);
69 return names[i];
70 }
71
72 Name[] nameArray() {
73 return Arrays.copyOf(names, length);
74 }
75
76 int resultIndex() {
77 if (resultName == null) return VOID_RESULT;
78 int index = indexOf(resultName, names);
79 assert(index >= 0);
80 return index;
81 }
82
83 void setNames(Name[] names2) {
84 names = originalNames = names2; // keep a record of where everything was to start with
|
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.lang.invoke;
27
28 import java.util.ArrayList;
29 import java.util.Arrays;
30 import static java.lang.invoke.LambdaForm.*;
31 import static java.lang.invoke.LambdaForm.BasicType.*;
32
33 /** Working storage for an LF that is being transformed.
34 * Similarly to a StringBuffer, the editing can take place in multiple steps.
35 */
36 final class LambdaFormBuffer {
37 private final LambdaForm lambdaForm;
38 private int arity, length;
39 private Name[] names;
40 private Name[] originalNames; // snapshot of pre-transaction names
41 private byte flags;
42 private int firstChange;
43 private Name resultName;
44 private String debugName;
45 private ArrayList<Name> dups;
46
47 private static final int F_TRANS = 0x10, F_OWNED = 0x03;
48
49 LambdaFormBuffer(LambdaForm lf) {
50 this.lambdaForm = lf;
51 this.arity = lf.arity;
52 setNames(lf.names);
53 int result = lf.result;
54 if (result == LAST_RESULT) result = length - 1;
55 if (result >= 0 && lf.names[result].type != V_TYPE)
56 resultName = lf.names[result];
57 debugName = lf.debugName;
58 assert(lf.nameRefsAreLegal());
59 }
60
61 private LambdaForm lambdaForm() {
62 assert(!inTrans()); // need endEdit call to tidy things up
63 return new LambdaForm(lambdaForm, debugName, arity, nameArray(), resultIndex());
64 }
65
66 Name name(int i) {
67 assert(i < length);
68 return names[i];
69 }
70
71 Name[] nameArray() {
72 return Arrays.copyOf(names, length);
73 }
74
75 int resultIndex() {
76 if (resultName == null) return VOID_RESULT;
77 int index = indexOf(resultName, names);
78 assert(index >= 0);
79 return index;
80 }
81
82 void setNames(Name[] names2) {
83 names = originalNames = names2; // keep a record of where everything was to start with
|