pub fn build_vtree(
formula: &CnfFormula,
spec: &str,
options: &VtreeOptions,
) -> Result<Arc<Vtree>, Error>Expand description
Build one vtree for the whole formula from a spec, such as "portfolio".
§Errors
Error::VtreeSpec:specis not a spec of vitri’s grammar, or the construction failed, as it does for a formula with no variables.Error::Environment: aVITRI_*vtree-selection setting in the environment is invalid.