bytedeco/javacpp

Problem with vector of nested class

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#494 opened on Jun 3, 2021

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Description

Here's a demo

#include <vector>
class Out {
    public:
        class Inner {
            public:
        };
};

        infoMap.put(new Info("std::vector<Out::Inner>").pointerTypes("InnerVector").define());

Here is InnerVector.java generated

@Name("std::vector<Out::Inner>") @Properties(inherit = ...)
public class InnerVector extends Pointer {
    static { Loader.load(); }
    /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
    public InnerVector(Pointer p) { super(p); }
    public InnerVector(Inner value) { this(1); put(0, value); }
    public InnerVector(Inner ... array) { this(array.length); put(array); }

Inner in generated code should be changed to Out.Inner Error messages

cannot find symbol
[ERROR]   symbol:   class Inner

Contributor guide

Research direction
Investigate the code generation logic for nested class names in template arguments, specifically in the Mapping or Generator classes. Look for where 'Out::Inner' is converted to 'Inner' and fix it to include the outer class qualifier.
Tech stack
javacpp
Domain
tooling
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaJavaCPP basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60