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zuspec-solver

Translates Zuspec IR solve problems for a constraint solver. Pure Python.

zuspec-ir-core collects an action's random fields and constraints into a ScSolveProblem. zuspec.solver.translate walks that problem once and hands each solver construct to a sink. The sink is the dv-solve builder, which produces a relocatable dv-solve problem blob, or anything else with the same methods. So every backend that solves a Zuspec model shares one encoding and one list of refused constructs.

from zuspec.solver.translate import build_solve_blob, TranslateError

blob, writeback = build_solve_blob(problem)   # problem: ScSolveProblem
# writeback: object field slot -> solver var_id

A constraint the solver cannot take raises TranslateError with its source location. It is never dropped.

Used by zuspec-be-bc, the backend pssc runs PSS on.

License

Apache-2.0

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