forked from mirror/go-json
35 lines
845 B
Go
35 lines
845 B
Go
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// +build !race
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package json
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import "unsafe"
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func encodeCompileToGetCodeSet(typeptr uintptr) (*opcodeSet, error) {
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if !existsCachedOpcodeSets {
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return encodeCompileToGetCodeSetSlowPath(typeptr)
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}
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if codeSet := cachedOpcodeSets[typeptr-baseTypeAddr]; codeSet != nil {
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return codeSet, nil
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}
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// noescape trick for header.typ ( reflect.*rtype )
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copiedType := *(**rtype)(unsafe.Pointer(&typeptr))
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code, err := encodeCompileHead(&encodeCompileContext{
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typ: copiedType,
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root: true,
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structTypeToCompiledCode: map[uintptr]*compiledCode{},
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})
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if err != nil {
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return nil, err
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}
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code = copyOpcode(code)
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codeLength := code.totalLength()
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codeSet := &opcodeSet{
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code: code,
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codeLength: codeLength,
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}
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cachedOpcodeSets[int(typeptr-baseTypeAddr)] = codeSet
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return codeSet, nil
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}
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