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8198816: AbstractScriptEngine.getScriptContext creation of SimpleScriptContext is inefficient

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Reviewed-by: sundar, jlaskey
This commit is contained in:
Hannes Wallnöfer 2018-04-23 18:14:35 +02:00
parent 60723b7e3d
commit 54d482220b
3 changed files with 19 additions and 12 deletions
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20
src/java.scripting/share/classes/javax/script/SimpleScriptContext.java
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@ -86,11 +86,25 @@ public class SimpleScriptContext implements ScriptContext {
* Create a {@code SimpleScriptContext}.
*/
public SimpleScriptContext() {
this(new InputStreamReader(System.in),
new PrintWriter(System.out , true),
new PrintWriter(System.err, true));
engineScope = new SimpleBindings();
globalScope = null;
reader = new InputStreamReader(System.in);
writer = new PrintWriter(System.out , true);
errorWriter = new PrintWriter(System.err, true);
}
/**
* Package-private constructor to avoid needless creation of reader and writers.
* It is the caller's responsability to initialize the engine scope.
*
* @param reader the reader
* @param writer the writer
* @param errorWriter the error writer
*/
SimpleScriptContext(Reader reader, Writer writer, Writer errorWriter) {
this.reader = reader;
this.writer = writer;
this.errorWriter = errorWriter;
}
/**