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comparison src/nabble/naml/compiler/StackTraceElement.java @ 0:7ecd1a4ef557

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author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 21 Mar 2019 19:15:52 -0600
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-1:000000000000 0:7ecd1a4ef557
1 package nabble.naml.compiler;
2
3 import java.lang.reflect.Method;
4 import fschmidt.util.java.Interner;
5 import nabble.naml.dom.Element;
6
7
8 public final class StackTraceElement {
9
10 private static final Interner<StackTraceElement> interner = new Interner<StackTraceElement>();
11
12 public final Source source;
13 private final int lineNumber;
14 private final Element element;
15 private final String commandName;
16 private Method method;
17
18 StackTraceElement(Source source,int lineNumber) {
19 this.source = source;
20 this.lineNumber = lineNumber;
21 this.element = null;
22 this.commandName = null;
23 }
24
25 public StackTraceElement(Source source,Element element) {
26 this(source,element,(String)null);
27 }
28
29 StackTraceElement(Macro macro) {
30 this(macro.source,macro.element);
31 }
32
33 StackTraceElement(Source source,Element element,String commandName) {
34 this.source = source;
35 this.lineNumber = element.lineNumber();
36 this.element = element;
37 this.commandName = commandName==null ? null : commandName.intern();
38 }
39
40 StackTraceElement(Source source,Element element,JavaCommand javaCommand) {
41 this(source,element,javaCommand.name);
42 setMethod(javaCommand.method);
43 }
44
45 void setMethod(Method method) {
46 this.method = method;
47 }
48
49 @Override public boolean equals(Object obj) {
50 if( !(obj instanceof StackTraceElement) )
51 return false;
52 StackTraceElement ste = (StackTraceElement)obj;
53 return ste.source == source
54 && ste.lineNumber == lineNumber
55 && ste.element == element
56 && ste.commandName == commandName
57 ;
58 }
59
60 @Override public int hashCode() {
61 int hash = source.id.hashCode();
62 hash = 31*hash + lineNumber;
63 if( element != null )
64 hash = 31*hash + element.hashCode();
65 if( commandName != null )
66 hash = 31*hash + commandName.hashCode();
67 return hash;
68 }
69
70 StackTraceElement intern() {
71 return interner.intern(this);
72 }
73
74 public String toString() {
75 if( element == null )
76 return source + ":" + (lineNumber+1);
77 StringBuilder sb = new StringBuilder();
78 if( commandName != null )
79 sb.append( commandName );
80 sb
81 .append( "(" )
82 .append( source )
83 .append( ":" )
84 .append( lineNumber+1 )
85 .append( ") - " )
86 .append( element.openingTag() )
87 ;
88 if( method != null )
89 sb.append( " - " ).append( method );
90 return sb.toString();
91 }
92
93 String commandName() {
94 return commandName;
95 }
96 }