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1
46 package groovy.util;
47
48
49 import org.codehaus.groovy.runtime.InvokerHelper;
50
51 import java.io.OutputStreamWriter  ;
52 import java.io.PrintWriter ;
53 import java.util.Iterator ;
54 import java.util.List ;
55 import java.util.Map ;
56
57
63 public class NodePrinter {
64
65 private IndentPrinter out;
66
67 public NodePrinter() {
68 this(new IndentPrinter(new PrintWriter (new OutputStreamWriter (System.out))));
69 }
70
71 public NodePrinter(PrintWriter out) {
72 this(new IndentPrinter(out));
73 }
74
75 public NodePrinter(IndentPrinter out) {
76 this.out = out;
77 }
78
79 public void print(Node node) {
80 out.printIndent();
81 printName(node);
82 Map attributes = node.attributes();
83 boolean hasAttributes = attributes != null && !attributes.isEmpty();
84 if (hasAttributes) {
85 printAttributes(attributes);
86 }
87 Object value = node.value();
88 if (value instanceof List ) {
89 if (!hasAttributes) {
90 out.print("()");
91 }
92 printList((List ) value);
93 }
94 else {
95 if (value instanceof String ) {
96 out.print("('");
97 out.print((String ) value);
98 out.println("')");
99 }
100 else {
101 out.println("()");
102 }
103 }
104 out.flush();
105 }
106
107 protected void printName(Node node) {
108 Object name = node.name();
109 if (name != null) {
110 out.print(name.toString());
111 }
112 else {
113 out.print("null");
114 }
115 }
116
117 protected void printList(List list) {
118 if (list.isEmpty()) {
119 out.println("");
120 }
121 else {
122 out.println(" {");
123 out.incrementIndent();
124 for (Iterator iter = list.iterator(); iter.hasNext();) {
125 Object value = iter.next();
126 if (value instanceof Node) {
127 print((Node) value);
128 }
129 else {
130 out.printIndent();
131 out.print("builder.append(");
132 out.print(InvokerHelper.toString(value));
133 out.println(")");
134 }
135 }
136 out.decrementIndent();
137 out.printIndent();
138 out.println("}");
139 }
140 }
141
142
143 protected void printAttributes(Map attributes) {
144 out.print("(");
145 boolean first = true;
146 for (Iterator iter = attributes.entrySet().iterator(); iter.hasNext();) {
147 Map.Entry entry = (Map.Entry ) iter.next();
148 if (first) {
149 first = false;
150 }
151 else {
152 out.print(", ");
153 }
154 out.print(entry.getKey().toString());
155 out.print(":");
156 if (entry.getValue() instanceof String ) {
157 out.print("'" + entry.getValue() + "'");
158 }
159 else {
160 out.print(InvokerHelper.toString(entry.getValue()));
161 }
162 }
163 out.print(")");
164 }
165
166 }
167 |
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