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#include "qv4stackframe_p.h"
#include <QtCore/qstring.h>

using namespace  QV4;

QString CppStackFrame::source() const
{
    return v4Function ? v4Function->sourceFile() : QString();
}

QString CppStackFrame::function() const
{
    return v4Function ? v4Function->name()->toQString() : QString();
}

int CppStackFrame::lineNumber() const
{
    if (!v4Function)
        return -1;

    auto findLine = [](const CompiledData::CodeOffsetToLine &entry, uint offset) {
        return entry.codeOffset < offset;
    };

    const QV4::CompiledData::Function *cf = v4Function->compiledFunction;
    uint offset = instructionPointer;
    const CompiledData::CodeOffsetToLine *lineNumbers = cf->lineNumberTable();
    uint nLineNumbers = cf->nLineNumbers;
    const CompiledData::CodeOffsetToLine *line = std::lower_bound(lineNumbers, lineNumbers + nLineNumbers, offset, findLine) - 1;
    return line->line;
}

ReturnedValue CppStackFrame::thisObject() const {
    return jsFrame->thisObject.asReturnedValue();
}