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Dataflow: Add empty type strengthening predicate for languages without type pruning.

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This commit is contained in:
Anders Schack-Mulligen
2023-05-09 12:10:31 +02:00
parent 96c1b5b0a9
commit fd832416d8
6 changed files with 12 additions and 0 deletions
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2
cpp/ql/lib/semmle/code/cpp/dataflow/internal/DataFlowPrivate.qll
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@@ -205,6 +205,8 @@ predicate clearsContent(Node n, Content c) {
*/
predicate expectsContent(Node n, ContentSet c) { none() }
predicate typeStrongerThan(DataFlowType t1, DataFlowType t2) { none() }
/** Gets the type of `n` used for type pruning. */
Type getNodeType(Node n) {
suppressUnusedNode(n) and

2
cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/DataFlowPrivate.qll
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@@ -753,6 +753,8 @@ predicate clearsContent(Node n, Content c) {
*/
predicate expectsContent(Node n, ContentSet c) { none() }
predicate typeStrongerThan(DataFlowType t1, DataFlowType t2) { none() }
/** Gets the type of `n` used for type pruning. */
DataFlowType getNodeType(Node n) {
suppressUnusedNode(n) and

2
go/ql/lib/semmle/go/dataflow/internal/DataFlowPrivate.qll
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@@ -200,6 +200,8 @@ predicate expectsContent(Node n, ContentSet c) {
FlowSummaryImpl::Private::Steps::summaryExpectsContent(n, c)
}
predicate typeStrongerThan(DataFlowType t1, DataFlowType t2) { none() }
/** Gets the type of `n` used for type pruning. */
DataFlowType getNodeType(Node n) { result = TTodoDataFlowType() and exists(n) }

2
python/ql/lib/semmle/python/dataflow/new/internal/DataFlowPrivate.qll
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@@ -502,6 +502,8 @@ class CastNode extends Node {
pragma[inline]
predicate compatibleTypes(DataFlowType t1, DataFlowType t2) { any() }
predicate typeStrongerThan(DataFlowType t1, DataFlowType t2) { none() }
/**
* Gets the type of `node`.
*/

2
ruby/ql/lib/codeql/ruby/dataflow/internal/DataFlowPrivate.qll
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@@ -1231,6 +1231,8 @@ class DataFlowType extends TDataFlowType {
string toString() { result = "" }
}
predicate typeStrongerThan(DataFlowType t1, DataFlowType t2) { none() }
/** Gets the type of `n` used for type pruning. */
DataFlowType getNodeType(NodeImpl n) { result = TTodoDataFlowType() and exists(n) }

2
swift/ql/lib/codeql/swift/dataflow/internal/DataFlowPrivate.qll
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@@ -793,6 +793,8 @@ class DataFlowType extends TDataFlowType {
string toString() { result = "" }
}
predicate typeStrongerThan(DataFlowType t1, DataFlowType t2) { none() }
/** Gets the type of `n` used for type pruning. */
DataFlowType getNodeType(NodeImpl n) {
any() // return the singleton DataFlowType until we support type pruning for Swift