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test(logic): improve predicate tests
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package util | ||
|
|
||
| import ( | ||
| "context" | ||
| "strings" | ||
|
|
||
| "github.com/ichiban/prolog" | ||
| "github.com/ichiban/prolog/engine" | ||
| "github.com/samber/lo" | ||
|
|
||
| sdkmath "cosmossdk.io/math" | ||
|
|
||
| "github.com/okp4/okp4d/x/logic/types" | ||
| ) | ||
|
|
||
| // QueryInterpreter interprets a query and returns the solutions up to the given limit. | ||
| func QueryInterpreter( | ||
| ctx context.Context, i *prolog.Interpreter, query string, limit sdkmath.Uint, | ||
| ) (*types.Answer, error) { | ||
| p := engine.NewParser(&i.VM, strings.NewReader(query)) | ||
| t, err := p.Term() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| var env *engine.Env | ||
| count := sdkmath.ZeroUint() | ||
| envs := make([]*engine.Env, 0, limit.Uint64()) | ||
| _, callErr := engine.Call(&i.VM, t, func(env *engine.Env) *engine.Promise { | ||
| if count.LT(limit) { | ||
| envs = append(envs, env) | ||
| } | ||
| count = count.Incr() | ||
| return engine.Bool(count.GT(limit)) | ||
| }, env).Force(ctx) | ||
|
|
||
| answerErr := lo.IfF(callErr != nil, func() string { | ||
| return callErr.Error() | ||
| }).Else("") | ||
| success := len(envs) > 0 | ||
| hasMore := count.GT(limit) | ||
| vars := parsedVarsToVars(p.Vars) | ||
| results, err := envsToResults(envs, p.Vars, i) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &types.Answer{ | ||
| Success: success, | ||
| Error: answerErr, | ||
| HasMore: hasMore, | ||
| Variables: vars, | ||
| Results: results, | ||
| }, nil | ||
| } | ||
|
|
||
| func parsedVarsToVars(vars []engine.ParsedVariable) []string { | ||
| return lo.Map(vars, func(v engine.ParsedVariable, _ int) string { | ||
| return v.Name.String() | ||
| }) | ||
| } | ||
|
|
||
| func envsToResults(envs []*engine.Env, vars []engine.ParsedVariable, i *prolog.Interpreter) ([]types.Result, error) { | ||
| results := make([]types.Result, 0, len(envs)) | ||
| for _, rEnv := range envs { | ||
| substitutions := make([]types.Substitution, 0, len(vars)) | ||
| for _, v := range vars { | ||
| var expression prolog.TermString | ||
| err := expression.Scan(&i.VM, v.Variable, rEnv) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| substitution := types.Substitution{ | ||
| Variable: v.Name.String(), | ||
| Expression: string(expression), | ||
| } | ||
| substitutions = append(substitutions, substitution) | ||
| } | ||
| results = append(results, types.Result{Substitutions: substitutions}) | ||
| } | ||
| return results, nil | ||
| } |