uschindler commented on PR #14602:
URL: https://github.com/apache/lucene/pull/14602#issuecomment-2845328503
I also added a new test to make sure that using the same function two times
works correct.
```java
public void testSameFunctionTwoTimes() throws Exception {
Expression expr = compile("sqrt(20)+abs(-7)+sqrt(30)");
assertEquals(Math.sqrt(20) + 7 + Math.sqrt(30), expr.evaluate(null),
DELTA);
}
```
I also verified the bytecode, now looks like this:
```
// (version 24 : 68.0, no super bit)
public final class
org.apache.lucene.expressions.js.JavascriptCompiler$CompiledExpression extends
org.apache.lucene.expressions.Expression {
// Method descriptor #6 (Ljava/lang/String;[Ljava/lang/String;)V
// Stack: 3, Locals: 3
public JavascriptCompiler$CompiledExpression(java.lang.String arg0,
java.lang.String[] arg1);
0 aload_0 [this]
1 aload_1 [arg0]
2 aload_2 [arg1]
3 invokespecial
org.apache.lucene.expressions.Expression(java.lang.String, java.lang.String[])
[8]
6 return
// Method descriptor #10 ([Lorg/apache/lucene/search/DoubleValues;)D
// Stack: 5, Locals: 2
public double evaluate(org.apache.lucene.search.DoubleValues[] arg0)
throws java.io.IOException;
0 ldc <Dynamic> 0 _ java.lang.invoke.MethodHandle [22]
2 ldc2_w <Double 20.0> [23]
5 invokevirtual java.lang.invoke.MethodHandle.invokeExact(double) :
double [30]
8 ldc <Dynamic> 1 _ java.lang.invoke.MethodHandle [32]
10 ldc2_w <Double 7.0> [33]
13 dneg
14 invokevirtual java.lang.invoke.MethodHandle.invokeExact(double) :
double [30]
17 dadd
18 ldc <Dynamic> 0 _ java.lang.invoke.MethodHandle [22]
20 ldc2_w <Double 30.0> [35]
23 invokevirtual java.lang.invoke.MethodHandle.invokeExact(double) :
double [30]
26 dadd
27 dreturn
28 aload_0 [this]
29 invokestatic
org.apache.lucene.expressions.js.JavascriptCompiler.patchStackTrace(java.lang.Throwable,
org.apache.lucene.expressions.Expression) : java.lang.Throwable [44]
32 athrow
Exception Table:
[pc: 0, pc: 28] -> 28 when : java.lang.Throwable
Stack map table: number of frames 1
[pc: 28, same_locals_1_stack_item, stack: {java.lang.Throwable}]
Bootstrap methods:
0 : # 18 invokestatic
java/lang/invoke/MethodHandles.classDataAt:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/Class;I)Ljava/lang/Object;
Method arguments:
#11 0,
1 : # 18 invokestatic
java/lang/invoke/MethodHandles.classDataAt:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/Class;I)Ljava/lang/Object;
Method arguments:
#31 1
}
```
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