Mercurial > hg > graal-compiler

comparison graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/core/InterpolatedStringNode.java @ 13514:0fbee3eb71f0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Ruby: import project.
author Chris Seaton <chris.seaton@oracle.com>
date Mon, 06 Jan 2014 17:12:09 +0000
parents
children
comparison
equal deleted inserted replaced
13513:64a23ce736a0 13514:0fbee3eb71f0
1 /*
2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
4 * redistribute it and/or modify it under the terms of the:
5 *
6 * Eclipse Public License version 1.0
7 * GNU General Public License version 2
8 * GNU Lesser General Public License version 2.1
9 */
10 package com.oracle.truffle.ruby.nodes.core;
11
12 import com.oracle.truffle.api.*;
13 import com.oracle.truffle.api.CompilerDirectives.CompilationFinal;
14 import com.oracle.truffle.api.frame.*;
15 import com.oracle.truffle.api.nodes.*;
16 import com.oracle.truffle.ruby.nodes.*;
17 import com.oracle.truffle.ruby.runtime.*;
18
19 /**
20 * A list of expressions to build up into a string.
21 */
22 @NodeInfo(shortName = "interpolated-string")
23 public final class InterpolatedStringNode extends RubyNode {
24
25 @CompilationFinal private int expectedLength = 64;
26
27 @Children protected final RubyNode[] children;
28
29 public InterpolatedStringNode(RubyContext context, SourceSection sourceSection, RubyNode[] children) {
30 super(context, sourceSection);
31 this.children = adoptChildren(children);
32 }
33
34 @ExplodeLoop
35 @Override
36 public Object execute(VirtualFrame frame) {
37 final StringBuilder builder = new StringBuilder(expectedLength);
38
39 for (int n = 0; n < children.length; n++) {
40 builder.append(children[n].execute(frame).toString());
41 }
42
43 if (builder.length() > expectedLength) {
44 CompilerDirectives.transferToInterpreterAndInvalidate();
45 expectedLength = builder.length() * 2;
46 }
47
48 return getContext().makeString(builder.toString());
49 }
50
51 @ExplodeLoop
52 @Override
53 public void executeVoid(VirtualFrame frame) {
54 for (int n = 0; n < children.length; n++) {
55 children[n].executeVoid(frame);
56 }
57 }
58
59 }