mirror of
https://github.com/usememos/memos.git
synced 2025-03-04 17:52:18 +08:00
50 lines
1.5 KiB
Go
50 lines
1.5 KiB
Go
package filter
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import (
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"github.com/google/cel-go/cel"
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"github.com/pkg/errors"
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exprv1 "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
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)
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// MemoFilterCELAttributes are the CEL attributes for memo.
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var MemoFilterCELAttributes = []cel.EnvOption{
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cel.Variable("content", cel.StringType),
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cel.Variable("tag", cel.StringType),
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}
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// Parse parses the filter string and returns the parsed expression.
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// The filter string should be a CEL expression.
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func Parse(filter string, opts ...cel.EnvOption) (expr *exprv1.ParsedExpr, err error) {
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e, err := cel.NewEnv(opts...)
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if err != nil {
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return nil, errors.Wrap(err, "failed to create CEL environment")
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}
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ast, issues := e.Compile(filter)
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if issues != nil {
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return nil, errors.Errorf("failed to compile filter: %v", issues)
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}
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return cel.AstToParsedExpr(ast)
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}
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// GetConstValue returns the constant value of the expression.
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func GetConstValue(expr *exprv1.Expr) (any, error) {
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v, ok := expr.ExprKind.(*exprv1.Expr_ConstExpr)
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if !ok {
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return nil, errors.New("invalid constant expression")
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}
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switch v.ConstExpr.ConstantKind.(type) {
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case *exprv1.Constant_StringValue:
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return v.ConstExpr.GetStringValue(), nil
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case *exprv1.Constant_Int64Value:
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return v.ConstExpr.GetInt64Value(), nil
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case *exprv1.Constant_Uint64Value:
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return v.ConstExpr.GetUint64Value(), nil
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case *exprv1.Constant_DoubleValue:
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return v.ConstExpr.GetDoubleValue(), nil
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case *exprv1.Constant_BoolValue:
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return v.ConstExpr.GetBoolValue(), nil
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default:
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return nil, errors.New("unexpected constant type")
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}
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}
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