From 8e80185508a697ddfcfed4a04d3f4e1ac5a330a9 Mon Sep 17 00:00:00 2001
From: Charlie Stanton <charlie@shtanton.xyz>
Date: Mon, 24 Apr 2023 13:16:06 +0100
Subject: WalkItems are now made of Atoms instead of WalkValues, and I have
 rolled my own JSON parser and serialiser

These changes improve performance
---
 main/main.go | 58 +++++++++++++++++++++++++---------------------------------
 1 file changed, 25 insertions(+), 33 deletions(-)

(limited to 'main/main.go')

diff --git a/main/main.go b/main/main.go
index 564d14a..e6730de 100644
--- a/main/main.go
+++ b/main/main.go
@@ -10,8 +10,8 @@ type Program []Command
 
 type ProgramState struct {
 	path, value, xreg []walk.Atom
-	in chan walk.WalkItem
-	out chan walk.WalkItem
+	in walk.JSONIn
+	out walk.JSONOut
 	program []Command
 }
 
@@ -40,41 +40,33 @@ func main() {
 	program := Parse(tokens)
 
 	stdin := bufio.NewReader(os.Stdin)
-	dataStream := walk.Json(stdin)
 
 	state := ProgramState {
-		in: dataStream,
-		out: make(chan walk.WalkItem),
+		in: walk.NewJSONIn(stdin),
+		out: walk.NewJSONOut(),
 		program: program,
 	}
-	
-	go func () {
-		for walkItem := range dataStream {
-			state.value = walk.Atomise([]walk.WalkValue{walkItem.Value})
-			state.path = walk.Atomise(walkItem.Path.ToWalkValues())
-			for _, cmd := range state.program {
-				cmd.exec(&state)
-			}
-			if !quiet {
-				pathValues, err := walk.Compound(state.path)
-				if err != nil {
-					panic("Tried to convert invalid atoms to values")
-				}
-				path := walk.PathFromWalkValues(pathValues)
-				values, err := walk.Compound(state.value)
-				if err != nil {
-					panic("Tried to convert invalid atoms to values")
-				}
-				for _, value := range values {
-					state.out <- walk.WalkItem {
-						Value: value,
-						Path: path,
-					}
-				}
+
+	for {
+		walkItem, err := state.in.Read()
+		if err != nil {
+			break
+		}
+		state.value = walkItem.Value
+		state.path = walkItem.Path
+		for _, cmd := range state.program {
+			cmd.exec(&state)
+		}
+		if !quiet {
+			pathValues, err := walk.Compound(state.path)
+			if err != nil {
+				panic("Tried to convert invalid atoms to values")
 			}
+			path := walk.PathFromWalkValues(pathValues)
+			state.out.Print(path, state.value)
 		}
-		close(state.out)
-	}()
-	
-	walk.JsonOut(state.out)
+	}
+
+	state.in.AssertDone()
+	state.out.AssertDone()
 }
\ No newline at end of file
-- 
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