xfy
376b9fd33c
Add gjson package providing high-performance JSON encoding/decoding for gopher-lua with lua-cjson API compatibility. Uses goccy/go-json as the underlying JSON engine. Features: - Full lua-cjson API compatibility for OpenResty migration - Sparse array detection and handling - Maximum nesting depth control for encode/decode - Number precision control - Independent configuration instances via gjson.new() - gjson.null sentinel for JSON null values Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
package gjson
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import (
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glua "github.com/yuin/gopher-lua"
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)
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// nullMarker is a sentinel type to identify gjson.null values.
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type nullMarker struct{}
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// GJSON represents a gjson instance with its own configuration.
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type GJSON struct {
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config *Config
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null *glua.LUserData
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}
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// createNull creates the gjson.null lightuserdata for the given LState.
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func createNull(L *glua.LState) *glua.LUserData {
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ud := L.NewUserData()
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ud.Value = nullMarker{}
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return ud
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}
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// isNull checks if a Lua value is gjson.null.
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func isNull(value glua.LValue) bool {
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if ud, ok := value.(*glua.LUserData); ok {
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_, isNullMarker := ud.Value.(nullMarker)
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return isNullMarker
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}
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return false
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}
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// gjsonNew creates a new GJSON instance with independent configuration.
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// Lua: gjson.new() -> new_instance
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func gjsonNew(L *glua.LState) int {
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// Create new instance with default config
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instance := &GJSON{
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config: defaultConfig(),
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}
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instance.null = createNull(L)
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// Create instance table
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tbl := L.NewTable()
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// Register methods (bound to this instance)
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L.SetField(tbl, "encode", L.NewFunction(instance.encode))
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L.SetField(tbl, "decode", L.NewFunction(instance.decode))
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L.SetField(tbl, "encode_sparse_array", L.NewFunction(instance.cfgEncodeSparseArray))
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L.SetField(tbl, "encode_max_depth", L.NewFunction(instance.cfgEncodeMaxDepth))
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L.SetField(tbl, "decode_max_depth", L.NewFunction(instance.cfgDecodeMaxDepth))
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L.SetField(tbl, "encode_number_precision", L.NewFunction(instance.cfgEncodeNumberPrecision))
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L.SetField(tbl, "encode_keep_buffer", L.NewFunction(instance.cfgEncodeKeepBuffer))
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L.SetField(tbl, "new", L.NewFunction(gjsonNew))
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// Set null
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L.SetField(tbl, "null", instance.null)
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// Set metadata
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L.SetField(tbl, "_NAME", glua.LString(ModuleName))
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L.SetField(tbl, "_VERSION", glua.LString(Version))
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L.Push(tbl)
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return 1
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}
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