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1 package com.genimen.djeneric.tools.generator.core.nodes;
2
3 import com.genimen.djeneric.repository.DjList;
4 import com.genimen.djeneric.tools.generator.core.DjentelParserEngine;
5 import com.genimen.djeneric.tools.generator.core.ParseException;
6 import com.genimen.djeneric.tools.generator.core.util.ContextObject;
7 import com.genimen.djeneric.tools.generator.core.util.ParseContext;
8
9 public class ForNode extends SetNode
10 {
11 private String  _separator = null;
12 private int _modulo = 0;
13 private String _moduloSeparator = null;
14
15 public ForNode(int i)
16 {
17 super(i);
18 }
19
20 public ForNode(DjentelParserEngine p, int i)
21 {
22 super(p, i);
23 }
24
25 public void setModulo(int m)
26 {
27 _modulo = m;
28 }
29
30 public void setModuloSeparator(String sep)
31 {
32 sep = sep.substring(1);
34 sep = sep.substring(0, sep.length() - 1);
35
36 _moduloSeparator = StringNode.translateEscapes(sep);
37 }
38
39 public String getName()
40 {
41 return "for";
42 }
43
44 public String toString()
45 {
46 return "for(" + getLoopVariable() + " in ...";
47 }
48
49 public void setLoopVariable(String loopVariable)
50 {
51 setSetName(loopVariable);
52 }
53
54 public String getLoopVariable()
55 {
56 return getSetName();
57 }
58
59 public void setSeparator(String sep)
60 {
61 sep = sep.substring(1);
63 sep = sep.substring(0, sep.length() - 1);
64
65 _separator = StringNode.translateEscapes(sep);
66 }
67
68 public void setIndent(CalculatedExpressionNode ind)
69 {
70 }
71
72 public void setBody(BodyNode body)
73 {
74 }
75
76 public String indentString(String val, int ind)
77 {
78 if (ind == 0) return val;
79
80 StringBuffer result = new StringBuffer (val);
81
82 if (ind > 0)
83 {
84 for (int x = 0; x < ind; x++)
85 result.insert(0, ' ');
86 int i = 0;
87 while (i < result.length())
88 {
89 if (i < result.length() - 1 && result.charAt(i) == '\n' && result.charAt(i + 1) != '\n')
90 {
91 for (int x = 0; x < ind; x++)
92 result.insert(i + 1, ' ');
93 i += ind;
94 }
95 i++;
96 }
97 }
98 if (ind < 0)
99 {
100 ind = -ind;
101 for (int d = 0; d < ind; d++)
102 if (result.charAt(0) == ' ') result.deleteCharAt(0);
103 int i = 0;
104 while (i < result.length())
105 {
106 if (i < result.length() - 1 && result.charAt(i) == '\n' && result.charAt(i + 1) != '\n')
107 {
108 int end = i + ind;
109 if (end > result.length()) end = result.length();
110 for (int d = i; d < end; d++)
111 if (result.charAt(i + 1) == ' ') result.deleteCharAt(i + 1);
112 }
113 i++;
114 }
115 }
116 return result.toString();
117 }
118
119 public String evaluate(ParseContext context) throws ParseException
120 {
121 context.mark();
122 StringBuffer result = new StringBuffer (2000);
123
124 String varName = getLoopVariable();
125 ValueExpression set = (ValueExpression) getChild(0);
126
127 Object o = set.getValue(context);
128 if (!(o instanceof DjList)) throw new ParseException("Expression is not a set of objects", beginLine, beginColumn);
129
130 DjList lst = (DjList) o;
131
132 if (lst.size() == 0) return "";
133
134 BodyNode body = null;
135 FilterNode filter = null;
136 IndentNode indent = null;
137 OrderByNode orderBy = null;
138
139 for (int i = 1; i < getChildCount(); i++)
140 {
141 if (getChild(i) instanceof FilterNode) filter = (FilterNode) getChild(i);
142 if (getChild(i) instanceof BodyNode) body = (BodyNode) getChild(i);
143 if (getChild(i) instanceof IndentNode) indent = (IndentNode) getChild(i);
144 if (getChild(i) instanceof OrderByNode) orderBy = (OrderByNode) getChild(i);
145 }
146
147 if (body == null) return "";
148 lst = processFilter(lst, context, filter);
149 processOrderBy(lst, orderBy);
150
151 int colsToIndent = 0;
152
153 if (indent != null)
154 {
155 o = indent.getValue(context);
156 if (!(o instanceof Integer )) throw new ParseException("Indent must be an integer value", beginLine, beginColumn);
157 colsToIndent = ((Integer ) o).intValue();
158 }
159
160 ContextObject loopvar = context.getObjectStack().push(varName, lst.getDjenericObjectAt(0));
161
162 for (int i = 0; i < lst.size(); i++)
163 {
164 loopvar.setObject(lst.getDjenericObjectAt(i));
165 result.append(indentString(body.evaluate(context), colsToIndent));
166
167 if (_modulo != 0 && i != lst.size() - 1 && ((i + 1) % _modulo == 0)) result.append(_moduloSeparator);
168 else if (_separator != null && i != lst.size() - 1) result.append(_separator);
169 }
170
171 context.releaseToMark();
172 return result.toString();
173 }
174
175 } |
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