ExpressionSnippet.java revision 3170:dc017a37aac5 
1178825Sdfr/*
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10233294Sstas *
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14233294Sstas * version 2 for more details (a copy is included in the LICENSE file that
15233294Sstas * accompanied this code).
16178825Sdfr *
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25233294Sstas
26233294Sstaspackage jdk.jshell;
27233294Sstas
28233294Sstasimport jdk.jshell.Key.ExpressionKey;
29233294Sstas
30233294Sstas/**
31233294Sstas * Snippet for an assignment or variable-value expression.
32178825Sdfr * The Kind is {@link jdk.jshell.Snippet.Kind#EXPRESSION}.
33178825Sdfr * <p>
34233294Sstas * <code>ExpressionSnippet</code> is immutable: an access to
35178825Sdfr * any of its methods will always return the same result.
36233294Sstas * and thus is thread-safe.
37178825Sdfr * @jls 15: Expression.
38178825Sdfr */
39178825Sdfrpublic class ExpressionSnippet extends Snippet {
40178825Sdfr
41178825Sdfr    ExpressionSnippet(ExpressionKey key, String userSource, Wrap guts, String name, SubKind subkind) {
42178825Sdfr        super(key, userSource, guts, name, subkind);
43178825Sdfr    }
44178825Sdfr
45    /**
46     * Variable name which is the value of the expression. Since the expression
47     * is either just a variable identifier or it is an assignment
48     * to a variable, there is always a variable which is the subject of the
49     * expression. All other forms of expression become temporary variables
50     * which are instead referenced by a {@link VarSnippet}.
51     * @return the name of the variable which is the subject of the expression.
52     */
53    @Override
54    public String name() {
55        return key().name();
56    }
57
58    /**
59     * Type of the expression
60     * @return String representation of the type of the expression.
61     */
62    public String typeName() {
63        return key().typeName();
64    }
65
66    /**** internal access ****/
67
68    @Override
69    ExpressionKey key() {
70        return (ExpressionKey) super.key();
71    }
72}
73