Method insert_code

src/liboslcomp/codegen.cpp:87–122

int
OSLCompilerImpl::insert_code (int opnum, const char *opname,
                              size_t nargs, Symbol **args, ASTNode *node)
{
    Opcode op (ustring (opname), m_codegenmethod, m_opargs.size(), nargs);
    if (node)
        op.source (node->sourcefile(), node->sourceline());
    m_ircode.insert (m_ircode.begin()+opnum, op);
    add_op_args (nargs, args);

    // Unless we were inserting at the end, we may need to adjust
    // the jump addresses of other ops and the param init ranges.
    if (opnum < (int)m_ircode.size()-1) {
        // Adjust jump offsets
        for (auto& c : m_ircode) {
            for (int j = 0; j < (int)Opcode::max_jumps && c.jump(j) >= 0; ++j) {
                if (c.jump(j) > opnum) {
                    c.jump(j) = c.jump(j) + 1;
                    // std::cerr << "Adjusting jump target at op " << n << "\n";
                }
            }
        }
        // Adjust param init ranges
        for (auto&& s : symtab()) {
            if (s->symtype() == SymTypeParam ||
                  s->symtype() == SymTypeOutputParam) {
                if (s->initbegin() > opnum)
                    s->initbegin (s->initbegin()+1);
                if (s->initend() > opnum)
                    s->initend (s->initend()+1);
            }
        }
    }

    return opnum;
}