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1 package polyglot.ext.jl.ast;
2
3 import polyglot.ast.*;
4 import polyglot.types.*;
5 import polyglot.util.*;
6 import polyglot.visit.*;
7 import java.util.*;
8
9
13 public abstract class AbstractBlock_c extends Stmt_c implements Block
14 {
15 protected List statements;
16
17 public AbstractBlock_c(Position pos, List statements) {
18 super(pos);
19 this.statements = TypedList.copyAndCheck(statements, Stmt.class, true);
20 }
21
22
23 public List statements() {
24 return this.statements;
25 }
26
27
28 public Block statements(List statements) {
29 AbstractBlock_c n = (AbstractBlock_c) copy();
30 n.statements = TypedList.copyAndCheck(statements, Stmt.class, true);
31 return n;
32 }
33
34
35 public Block append(Stmt stmt) {
36 List l = new ArrayList(statements.size()+1);
37 l.addAll(statements);
38 l.add(stmt);
39 return statements(l);
40 }
41
42
43 public Block prepend(Stmt stmt) {
44 List l = new ArrayList(statements.size()+1);
45 l.add(stmt);
46 l.addAll(statements);
47 return statements(l);
48 }
49
50
51 protected AbstractBlock_c reconstruct(List statements) {
52 if (! CollectionUtil.equals(statements, this.statements)) {
53 AbstractBlock_c n = (AbstractBlock_c) copy();
54 n.statements = TypedList.copyAndCheck(statements, Stmt.class, true);
55 return n;
56 }
57
58 return this;
59 }
60
61
62 public Node visitChildren(NodeVisitor v) {
63 List statements = visitList(this.statements, v);
64 return reconstruct(statements);
65 }
66
67 public Context enterScope(Context c) {
68 return c.pushBlock();
69 }
70
71
72 public void prettyPrint(CodeWriter w, PrettyPrinter tr) {
73 w.begin(0);
74
75 for (Iterator i = statements.iterator(); i.hasNext(); ) {
76 Stmt n = (Stmt) i.next();
77 printBlock(n, w, tr);
78
79 if (i.hasNext()) {
80 w.newline(0);
81 }
82 }
83
84 w.end();
85 }
86
87 public Term entry() {
88 return listEntry(statements, this);
89 }
90
91 public List acceptCFG(CFGBuilder v, List succs) {
92 v.visitCFGList(statements, this);
93 return succs;
94 }
95
96 public String  toString() {
97 StringBuffer sb = new StringBuffer ();
98 sb.append("{");
99
100 int count = 0;
101
102 for (Iterator i = statements.iterator(); i.hasNext(); ) {
103 if (count++ > 2) {
104 sb.append(" ...");
105 break;
106 }
107
108 Stmt n = (Stmt) i.next();
109 sb.append(" ");
110 sb.append(n.toString());
111 }
112
113 sb.append(" }");
114 return sb.toString();
115 }
116 }
117 |
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Java API By Example, From Geeks To Geeks.