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Add missing API methods: Java substituteFuns, TypeScript Fixedpoint and substitution APIs (#8138)

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* Initial plan

* Add substituteFuns to Java and substitute methods to TypeScript

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Add Fixedpoint (Datalog) API to TypeScript bindings

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Improve error message in Java substituteFuns method

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Fix TypeScript build error: use .ptr instead of .decl for FuncDecl

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Fix TypeScript build errors: handle optional symbols and pointer null checks

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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Copilot 2026-01-10 12:04:50 -08:00 • committed by GitHub
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commit 6d14d2e3b8
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24
src/api/java/Expr.java
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@ -188,6 +188,30 @@ public class Expr<R extends Sort> extends AST
getNativeObject(), to.length, Expr.arrayToNative(to)));
}
/**
* Substitute functions in {@code from} with the expressions in {@code to}.
* The expressions in {@code to} can have free variables. The free variable
* in {@code to[i]} at de-Bruijn index 0 refers to the first argument of
* {@code from[i]}, the free variable at index 1 corresponds to the second
* argument, and so on.
* Remarks: The arrays {@code from} and {@code to} must have the same size.
* @param from Array of function declarations to be substituted
* @param to Array of expressions to substitute with
* @throws Z3Exception on error
* @return an Expr
**/
public Expr<R> substituteFuns(FuncDecl<?>[] from, Expr<?>[] to)
{
getContext().checkContextMatch(from);
getContext().checkContextMatch(to);
if (from.length != to.length) {
throw new Z3Exception("Arrays 'from' and 'to' must have the same length");
}
return (Expr<R>) Expr.create(getContext(), Native.substituteFuns(getContext().nCtx(),
getNativeObject(), from.length, AST.arrayToNative(from),
Expr.arrayToNative(to)));
}
/**
* Translates (copies) the term to the Context {@code ctx}.
*