/
node.go
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/
node.go
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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package node contains utility functions for working with SSA nodes.
package node
import (
"fmt"
"strings"
"golang.org/x/tools/go/ssa"
)
// CanonicalName produces a canonical string representation for an SSA node.
func CanonicalName(n ssa.Node) string {
value, isValue := n.(ssa.Value)
instr, isInstr := n.(ssa.Instruction)
switch {
case isValue && isInstr:
return fmt.Sprintf("%s = %s", value.Name(), instr.String())
case isValue:
return value.Name()
case isInstr:
return instr.String()
default:
member, isMember := n.(ssa.Member)
if !isMember {
return ""
}
return member.Name()
}
}
// TrimmedType returns the type of a node without the "*.ssa" prefix.
func TrimmedType(n ssa.Node) string {
t := fmt.Sprintf("%T", n)
return strings.TrimPrefix(t, "*ssa.")
}