Method parse_gcinstr

src/lib/parse/instr_parse.cpp:661–685

// ── GC struct/array instructions ──────────────────────────────────────────────

WasmInstr ParseContext::parse_gcinstr(const std::string& name) {
    // Struct
    if (name == "struct.new")         return Instr::Struct_new(parse_typeidx());
    if (name == "struct.new_default") return Instr::Struct_new_default(parse_typeidx());
    if (name == "struct.get")   { index_t t = parse_typeidx(); return Instr::Struct_get(t, parse_u32()); }
    if (name == "struct.get_s") { index_t t = parse_typeidx(); return Instr::Struct_get_s(t, parse_u32()); }
    if (name == "struct.get_u") { index_t t = parse_typeidx(); return Instr::Struct_get_u(t, parse_u32()); }
    if (name == "struct.set")   { index_t t = parse_typeidx(); return Instr::Struct_set(t, parse_u32()); }
    // Array
    if (name == "array.new")         return Instr::Array_new(parse_typeidx());
    if (name == "array.new_default") return Instr::Array_new_default(parse_typeidx());
    if (name == "array.new_fixed")   { index_t t = parse_typeidx(); return Instr::Array_new_fixed(t, parse_u32()); }
    if (name == "array.new_data")    { index_t t = parse_typeidx(); return Instr::Array_new_data(t, parse_dataidx()); }
    if (name == "array.new_elem")    { index_t t = parse_typeidx(); return Instr::Array_new_elem(t, parse_elemidx()); }
    if (name == "array.get")         return Instr::Array_get(parse_typeidx());
    if (name == "array.get_s")       return Instr::Array_get_s(parse_typeidx());
    if (name == "array.get_u")       return Instr::Array_get_u(parse_typeidx());
    if (name == "array.set")         return Instr::Array_set(parse_typeidx());
    if (name == "array.len")         return Instr::Array_len();
    if (name == "array.fill")        return Instr::Array_fill(parse_typeidx());
    if (name == "array.copy")        { index_t d = parse_typeidx(); return Instr::Array_copy(d, parse_typeidx()); }
    if (name == "array.init_data")   { index_t t = parse_typeidx(); return Instr::Array_init_data(t, parse_dataidx()); }
    if (name == "array.init_elem")   { index_t t = parse_typeidx(); return Instr::Array_init_elem(t, parse_elemidx()); }
    throw Exception::Parse("unknown GC instruction '" + name + "'", tok_.location());
}