land/vendor/github.com/go-interpreter/wagon/validate/error.go

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2018-06-17 23:39:04 +00:00
// Copyright 2017 The go-interpreter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package validate
import (
"errors"
"fmt"
"github.com/go-interpreter/wagon/wasm"
ops "github.com/go-interpreter/wagon/wasm/operators"
)
type Error struct {
Offset int // Byte offset in the bytecode vector where the error occurs.
Function int // Index into the function index space for the offending function.
Err error
}
func (e Error) Error() string {
return fmt.Sprintf("error while validating function %d at offset %d: %v", e.Function, e.Offset, e.Err)
}
var ErrStackUnderflow = errors.New("validate: stack underflow")
type InvalidImmediateError struct {
ImmType string
OpName string
}
func (e InvalidImmediateError) Error() string {
return fmt.Sprintf("invalid immediate for op %s at (should be %s)", e.OpName, e.ImmType)
}
type UnmatchedOpError byte
func (e UnmatchedOpError) Error() string {
n1, _ := ops.New(byte(e))
return fmt.Sprintf("encountered unmatched %s", n1.Name)
}
type InvalidLabelError uint32
func (e InvalidLabelError) Error() string {
return fmt.Sprintf("invalid nesting depth %d", uint32(e))
}
type InvalidLocalIndexError uint32
func (e InvalidLocalIndexError) Error() string {
return fmt.Sprintf("invalid index for local variable %d", uint32(e))
}
type InvalidTypeError struct {
Wanted wasm.ValueType
Got wasm.ValueType
}
func (e InvalidTypeError) Error() string {
return fmt.Sprintf("invalid type, got: %v, wanted: %v", e.Got, e.Wanted)
}
type InvalidElementIndexError uint32
func (e InvalidElementIndexError) Error() string {
return fmt.Sprintf("invalid element index %d", uint32(e))
}
type NoSectionError wasm.SectionID
func (e NoSectionError) Error() string {
return fmt.Sprintf("reference to non existant section (id %d) in module", wasm.SectionID(e))
}