// same as in [CheckExpr]. An error is returned if expr cannot
// be parsed successfully, or the resulting expr AST cannot be
// type-checked.
func Eval(fset *token.FileSet, pkg *Package, pos token.Pos, expr string) (_ TypeAndValue, err error) {
	// parse expressions
	node, err := parser.ParseExprFrom(fset, "eval", expr, 0)
	if err != nil {
		return TypeAndValue{}, err
	}

	info := &Info{
		Types: make(map[ast.Expr]TypeAndValue),
	}

    @Test
    fun `can eval script against Project mock`() {

        val project = project()
        eval(
            script = """
                version = "1.0"
            """,
            target = project
        )
        verify(project).version = "1.0"
    }

    @Test
    fun `can eval script against Settings mock`() {

        val settings = mock<Settings>()

func Condition(summary string, eval func(*State) (bool, error)) Cond {
	return &funcCond{eval: eval, usage: CondUsage{Summary: summary}}
}

type funcCond struct {
	eval  func(*State) (bool, error)
	usage CondUsage
}

func (c *funcCond) Usage() *CondUsage { return &c.usage }

func (c *funcCond) Eval(s *State, suffix string) (bool, error) {
	if suffix != "" {
		return false, ErrUsage

class DslTestFixture(private val testDirectory: File) {

    val kotlinDslEvalBaseCacheDir: File by lazy {
        testDirectory.resolve("kotlin-dsl-eval-cache").apply {
            mkdirs()
        }
    }

    val kotlinDslEvalBaseTempDir: File by lazy {
        testDirectory.resolve("kotlin-dsl-eval-temp").apply {
            mkdirs()
        }
    }

    /**

ISTIO_FILES:=
$(foreach DEP,$(ISTIO_DEB_DEPS),\
        $(eval ${TARGET_OUT_LINUX}/release/istio.deb: $(TARGET_OUT_LINUX)/$(DEP)) \
        $(eval ISTIO_FILES+=$(TARGET_OUT_LINUX)/$(DEP)=$(ISTIO_DEB_BIN)/$(DEP)) )

SIDECAR_DEB_DEPS:=envoy pilot-agent
SIDECAR_FILES:=
$(foreach DEP,$(SIDECAR_DEB_DEPS),\
        $(eval ${TARGET_OUT_LINUX}/release/istio-sidecar.deb: $(TARGET_OUT_LINUX)/$(DEP)) \

                        CloseTargetScope,
                        ApplyBasePlugins,
                        Eval(program.source)
                    )
                }
            }

            else -> {
                Static(
                    defaultStageTransition(),
                    Eval(program.source)
                )
            }
        }

    private

	return m.eval(ctx, map[string]interface{}{claimsVarName: claims.Object})
}

// EvalUser evaluates the given user expressions and returns a list of EvaluationResult.
func (m *mapper) EvalUser(ctx context.Context, userInfo *unstructured.Unstructured) ([]EvaluationResult, error) {
	return m.eval(ctx, map[string]interface{}{userVarName: userInfo.Object})
}

}

type unop struct {
	name string
	eval func(x *big.Int) *big.Int
}

var unops = []unop{
	unop{"+", func(x *big.Int) *big.Int { return new(big.Int).Set(x) }},
	unop{"-", func(x *big.Int) *big.Int { return new(big.Int).Neg(x) }},
	unop{"^", func(x *big.Int) *big.Int { return new(big.Int).Not(x) }},
}

type shiftop struct {
	name string
	eval func(x *big.Int, i uint) *big.Int
}

	// These are optional fields which can be populated if metrics reporting is desired
	Metrics        MatcherMetrics
	AuthorizerType string
	AuthorizerName string
}

// eval evaluates the given SubjectAccessReview against all cel matchCondition expression
func (c *CELMatcher) Eval(ctx context.Context, r *authorizationv1.SubjectAccessReview) (bool, error) {
	var evalErrors []error

	metrics := c.Metrics
	if metrics == nil {

	gotTv, err := Eval(fset, pkg, pos, expr)
	if err != nil {
		t.Errorf("Eval(%q) failed: %s", expr, err)
		return
	}
	if gotTv.Type == nil {
		t.Errorf("Eval(%q) got nil type but no error", expr)
		return
	}

	// compare types
	if typ != nil {
		// we have a type, check identity
		if !Identical(gotTv.Type, typ) {
			t.Errorf("Eval(%q) got type %s, want %s", expr, gotTv.Type, typ)