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C++: Implement ContentSet

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Tom Hvitved
2022-04-01 16:33:07 +02:00
parent 725d76e934
commit d99bb65ea9
2 changed files with 56 additions and 0 deletions
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28
cpp/ql/lib/semmle/code/cpp/dataflow/internal/DataFlowUtil.qll
View File

@@ -821,6 +821,34 @@ private class CollectionContent extends Content, TCollectionContent {
override string toString() { result = "<element>" }
}
/**
* An entity that represents a set of `Content`s.
*
* The set may be interpreted differently depending on whether it is
* stored into (`getAStoreContent`) or read from (`getAReadContent`).
*/
class ContentSet instanceof Content {
/** Gets a content that may be stored into when storing into this set. */
Content getAStoreContent() { result = this }
/** Gets a content that may be read from when reading from this set. */
Content getAReadContent() { result = this }
/** Gets a textual representation of this content set. */
string toString() { result = super.toString() }
/**
* Holds if this element is at the specified location.
* The location spans column `startcolumn` of line `startline` to
* column `endcolumn` of line `endline` in file `filepath`.
* For more information, see
* [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
*/
predicate hasLocationInfo(string path, int sl, int sc, int el, int ec) {
super.hasLocationInfo(path, sl, sc, el, ec)
}
}
/**
* A guard that validates some expression.
*

28
cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/DataFlowUtil.qll
View File

@@ -1063,6 +1063,34 @@ private class CollectionContent extends Content, TCollectionContent {
override string toString() { result = "<element>" }
}
/**
* An entity that represents a set of `Content`s.
*
* The set may be interpreted differently depending on whether it is
* stored into (`getAStoreContent`) or read from (`getAReadContent`).
*/
class ContentSet instanceof Content {
/** Gets a content that may be stored into when storing into this set. */
Content getAStoreContent() { result = this }
/** Gets a content that may be read from when reading from this set. */
Content getAReadContent() { result = this }
/** Gets a textual representation of this content set. */
string toString() { result = super.toString() }
/**
* Holds if this element is at the specified location.
* The location spans column `startcolumn` of line `startline` to
* column `endcolumn` of line `endline` in file `filepath`.
* For more information, see
* [Locations](https://codeql.github.com/docs/writing-codeql-queries/providing-locations-in-codeql-queries/).
*/
predicate hasLocationInfo(string path, int sl, int sc, int el, int ec) {
super.hasLocationInfo(path, sl, sc, el, ec)
}
}
/**
* A guard that validates some instruction.
*