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fix handling of subopertions in a SWITCH and add more asserts. #43

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Volker Berlin 2022-06-06 20:24:19 +02:00
parent 4958cb2f46
commit a46cbe2bc5
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GPG Key ID: 988423EF815BE4CB
1 changed files with 36 additions and 6 deletions
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42
src/de/inetsoftware/jwebassembly/module/BranchManager.java
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@ -910,6 +910,9 @@ class BranchManager {
continue;
}
int end = parsedBlock.endPosition;
if( end > parent.endPos ) {
break;
}
if( start < end ) {
BranchNode branch = blockNode;
while( branch.size() > 0 ) {
@ -942,6 +945,12 @@ class BranchManager {
parent.add( blockNode );
blockNode = cases[0].node;
do {
calculateSubOperations( blockNode, parsedOperations );
blockNode = blockNode.parent;
} while( blockNode != parent );
if( brTableNode != null ) {
// sort back in the natural order and create a br_table
Arrays.sort( cases, ( a, b ) -> Long.compare( a.key, b.key ) );
@ -951,12 +960,6 @@ class BranchManager {
}
brTableNode.data = data;
}
blockNode = cases[0].node;
do {
calculateSubOperations( blockNode, parsedOperations );
blockNode = blockNode.parent;
} while( blockNode != parent );
}
/**
@ -1699,6 +1702,7 @@ class BranchManager {
int nodeStartPos = node.startPos;
for( int i = size - 1; i >= 0; i-- ) {
if( get( i ).endPos <= nodeStartPos ) {
assert !overlapped( i + 1, node ): "Node on wrong level: " + node + "; parent: " + this;
super.add( i + 1, node );
return true;
}
@ -1715,9 +1719,35 @@ class BranchManager {
public void add( int index, BranchNode node ) {
node.parent = this;
assert node.startOp == null || (node.startPos >= startPos && node.endPos <= endPos): "Node outside parent: " + this + " + " + node;
assert !overlapped( index, node ): "Node on wrong level: " + node + "; parent: " + this;
super.add( index, node );
}
/**
* If the given node overlapped with other existing child nodes and should not be added.
* @param index the possible insert code position
* @param node the node
* @return true, if the position is already consumed from a child
*/
private boolean overlapped( int index, @Nonnull BranchNode node ) {
if( node.startOp == null ) {
return false;
}
if( index > 0 ) {
BranchNode before = get( index - 1 );
if( before.endPos > node.startPos ) {
return true;
}
}
if( index < size() ) {
BranchNode after = get( index );
if( node.endPos > after.startPos ) {
return true;
}
}
return false;
}
/**
* If the given position overlapped with other existing child nodes
* @param startPos the code position