53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
package sa1014
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import (
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"fmt"
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"go/types"
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"honnef.co/go/tools/analysis/callcheck"
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"honnef.co/go/tools/analysis/lint"
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"honnef.co/go/tools/internal/passes/buildir"
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"golang.org/x/tools/go/analysis"
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)
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var SCAnalyzer = lint.InitializeAnalyzer(&lint.Analyzer{
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Analyzer: &analysis.Analyzer{
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Name: "SA1014",
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Requires: []*analysis.Analyzer{buildir.Analyzer},
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Run: callcheck.Analyzer(checkUnmarshalPointerRules),
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},
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Doc: &lint.RawDocumentation{
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Title: `Non-pointer value passed to \'Unmarshal\' or \'Decode\'`,
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Since: "2017.1",
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Severity: lint.SeverityError,
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MergeIf: lint.MergeIfAny,
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},
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})
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var Analyzer = SCAnalyzer.Analyzer
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var checkUnmarshalPointerRules = map[string]callcheck.Check{
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"encoding/xml.Unmarshal": unmarshalPointer("xml.Unmarshal", 1),
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"(*encoding/xml.Decoder).Decode": unmarshalPointer("Decode", 0),
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"(*encoding/xml.Decoder).DecodeElement": unmarshalPointer("DecodeElement", 0),
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"encoding/json.Unmarshal": unmarshalPointer("json.Unmarshal", 1),
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"(*encoding/json.Decoder).Decode": unmarshalPointer("Decode", 0),
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}
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func unmarshalPointer(name string, arg int) callcheck.Check {
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return func(call *callcheck.Call) {
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if !Pointer(call.Args[arg].Value) {
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call.Args[arg].Invalid(fmt.Sprintf("%s expects to unmarshal into a pointer, but the provided value is not a pointer", name))
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}
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}
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}
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func Pointer(v callcheck.Value) bool {
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switch v.Value.Type().Underlying().(type) {
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case *types.Pointer, *types.Interface:
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return true
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}
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return false
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}
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