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Kotlin: Fix build with old JDKs

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This commit is contained in:
Ian Lynagh
2022-01-17 19:28:17 +00:00
parent 221fa37081
commit 7cf1289385
1 changed files with 26 additions and 1 deletions
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27
java/kotlin-extractor/src/main/java/com/semmle/extractor/java/OdasaOutput.java
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@@ -1,5 +1,6 @@
package com.semmle.extractor.java;
import java.lang.reflect.*;
import java.io.File;
import java.io.IOException;
import java.net.URI;
@@ -515,7 +516,26 @@ public class OdasaOutput {
final int[] versionStore = new int[1];
try {
ClassVisitor versionGetter = new ClassVisitor(Opcodes.ASM9) {
// Opcodes has fields called ASM4, ASM5, ...
// We want to use the latest one that there is.
Field asmField = null;
int asmNum = -1;
for(Field f : Opcodes.class.getDeclaredFields()) {
String name = f.getName();
if(name.startsWith("ASM")) {
try {
int i = Integer.parseInt(name.substring(3));
if(i > asmNum) {
asmNum = i;
asmField = f;
}
} catch (NumberFormatException ex) {
// Do nothing; this field doesn't have a name of the right format
}
}
}
int asm = asmField.getInt(null);
ClassVisitor versionGetter = new ClassVisitor(asm) {
public void visit​(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces) {
versionStore[0] = version;
}
@@ -524,7 +544,12 @@ public class OdasaOutput {
return new TrapClassVersion(versionStore[0] & 0xffff, versionStore[0] >> 16, vf.getTimeStamp());
}
catch(IllegalAccessException e) {
// TODO: Log something
return new TrapClassVersion(0, 0, 0);
}
catch(IOException e) {
// TODO: Log something
return new TrapClassVersion(0, 0, 0);
}
}