smtlib
provides drivers that adapt standard SMT-LIB to solver specific behaviour
Provides constructors and extractors to build theory specific trees
Provides constructors and extractors to build theory specific trees
Theory trees are not concrete abstract syntax trees, but simply helpers to properly construct the underlying low level {{smtlib.parser.Terms AST}}.
This design choice is made to reflect how the SMT-LIB format is described, and also seems to work well as most operations on trees only need to be defined for the core ASTs. Many theories operations such as "+", "-", "div" are really a special case of the general {{smtlib.parser.Terms.FunctionApplication FunctionApplication}}.
Each theory is defined in its own object named after the theory, e.g.
{theories.Ints}, which contains objects with apply and unapply (usually
factored out in some abstract {{theory.Operations}} traits) to build and
extract correct expressions in the theory.
provides drivers that adapt standard SMT-LIB to solver specific behaviour
In particula, some solvers only support a subset of SMT-LIB or an outdated version. The aim of the drivers are to simplify the interface for other tools. All the tools have to be concerned about is to follow the SMT-LIB standard, and the driver will take care of any peculiarity of the solver.