errors.go

Documentation: cuelang.org/go/internal/core/runtime

     1  // Copyright 2020 CUE Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package runtime
    16  
    17  import (
    18  	"cuelang.org/go/cue/ast"
    19  	"cuelang.org/go/cue/errors"
    20  	"cuelang.org/go/cue/token"
    21  )
    22  
    23  var _ errors.Error = &nodeError{}
    24  
    25  // A nodeError is an error associated with processing an AST node.
    26  type nodeError struct {
    27  	path []string // optional
    28  	n    ast.Node
    29  
    30  	errors.Message
    31  }
    32  
    33  func (n *nodeError) Error() string {
    34  	return errors.String(n)
    35  }
    36  
    37  func nodeErrorf(n ast.Node, format string, args ...interface{}) *nodeError {
    38  	return &nodeError{
    39  		n:       n,
    40  		Message: errors.NewMessagef(format, args...),
    41  	}
    42  }
    43  
    44  func (e *nodeError) Position() token.Pos {
    45  	return e.n.Pos()
    46  }
    47  
    48  func (e *nodeError) InputPositions() []token.Pos { return nil }
    49  
    50  func (e *nodeError) Path() []string {
    51  	return e.path
    52  }
    53
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