From 7d53110f2773ba758dea2f5c00483d879d378870 Mon Sep 17 00:00:00 2001
From: Charlie Stanton <charlie@shtanton.xyz>
Date: Wed, 19 Jul 2023 12:01:38 +0100
Subject: Removes redundant json readers and writers

---
 json_array/read.go | 118 -----------------------------------------------------
 1 file changed, 118 deletions(-)
 delete mode 100644 json_array/read.go

(limited to 'json_array/read.go')

diff --git a/json_array/read.go b/json_array/read.go
deleted file mode 100644
index 786bc2c..0000000
--- a/json_array/read.go
+++ /dev/null
@@ -1,118 +0,0 @@
-package json_array
-
-import (
-	"main/walk"
-	"encoding/json"
-	"errors"
-	"bufio"
-)
-
-type state int
-const (
-	stateStart state = iota
-	stateValueStart
-	stateEnd
-	stateDead
-)
-
-func atomiseValue(value interface{}) []walk.AtomOLD {
-	switch v := value.(type) {
-		case nil:
-			return []walk.AtomOLD{walk.NewAtomNull()}
-		case bool:
-			return []walk.AtomOLD{walk.NewAtomBool(v)}
-		case float64:
-			return []walk.AtomOLD{walk.NewAtomNumber(v)}
-		case string:
-			atoms := []walk.AtomOLD{walk.NewAtomStringTerminal()}
-			for _, r := range v {
-				atoms = append(atoms, walk.NewAtomStringRune(r))
-			}
-			atoms = append(atoms, walk.NewAtomStringTerminal())
-			return atoms
-		case []interface{}:
-			atoms := []walk.AtomOLD{walk.NewAtomTerminal(walk.ArrayBegin)}
-			for _, element := range v {
-				atoms = append(atoms, atomiseValue(element)...)
-			}
-			atoms = append(atoms, walk.NewAtomTerminal(walk.ArrayEnd))
-			return atoms
-		case map[string]interface{}:
-			atoms := []walk.AtomOLD{walk.NewAtomTerminal(walk.MapBegin)}
-			for key, element := range v {
-				atoms = append(atoms, atomiseValue(key)...)
-				atoms = append(atoms, atomiseValue(element)...)
-			}
-			atoms = append(atoms, walk.NewAtomTerminal(walk.MapEnd))
-			return atoms
-		default:
-			panic("Invalid JSON value type")
-	}
-}
-
-func NewJSONArrayReader(reader *bufio.Reader) *JSONArrayReader {
-	return &JSONArrayReader {
-		decoder: json.NewDecoder(reader),
-		state: stateStart,
-		index: 0,
-	}
-}
-
-type JSONArrayReader struct {
-	decoder *json.Decoder
-	state state
-	index int
-}
-
-func (in *JSONArrayReader) Read() (walk.WalkItem, error) {
-	restart:
-	switch in.state {
-		case stateStart:
-			arrayStart, err := in.decoder.Token()
-			if err != nil {
-				panic("Error reading start of JSON array")
-			}
-			delim, isDelim := arrayStart.(json.Delim)
-			if !isDelim || delim != '[' {
-				panic("JSON input is not an array!")
-			}
-			in.state = stateValueStart
-			goto restart
-		case stateValueStart:
-			if !in.decoder.More() {
-				in.state = stateEnd
-				goto restart
-			}
-			var m interface{}
-			err := in.decoder.Decode(&m)
-			if err != nil {
-				panic("Error decoding array value")
-			}
-			in.index += 1
-			return walk.WalkItem {
-				Path: []interface{}{float64(in.index - 1)},
-				Value: []interface{}{m},
-			}, nil
-		case stateEnd:
-			arrayEnd, err := in.decoder.Token()
-			if err != nil {
-				panic("Error reading end of JSON array")
-			}
-			delim, isDelim := arrayEnd.(json.Delim)
-			if !isDelim || delim != ']' {
-				panic("JSON array wasn't ended")
-			}
-			in.state = stateDead
-			return walk.WalkItem{}, errors.New("eof")
-		case stateDead:
-			return walk.WalkItem{}, errors.New("eof")
-		default:
-			panic("Unreachable!!!")
-	}
-}
-
-func (in *JSONArrayReader) AssertDone() {
-	if in.state != stateDead || in.decoder.More() {
-		panic("More JSON after array value")
-	}
-}
-- 
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