From 7d01a94d5631a83911092cd32afafa2c395960c6 Mon Sep 17 00:00:00 2001
From: hyung-hwan <hyunghwan.chung@gmail.com>
Date: Fri, 21 Jul 2023 18:32:51 +0900
Subject: [PATCH] updated code

---
 interp/eval.go | 68 ++++++++++++++++++++++++++++++++++++++++++++++----
 interp/feed.go | 19 ++++++--------
 interp/pcl.go  | 11 ++------
 3 files changed, 72 insertions(+), 26 deletions(-)

diff --git a/interp/eval.go b/interp/eval.go
index 41bb2d7..1d3b10e 100644
--- a/interp/eval.go
+++ b/interp/eval.go
@@ -124,7 +124,70 @@ func (p *process_t) pop_context() (node *Cnode_t) {
 	return
 }
 
+/*
+stmt
+
+	   text text bracket
+		              stmt: text text
+					  stmt: text TEXT
+*/
 func (interp *Interp) eval_atom_node(node *Cnode_t) (*string, error) {
+	var (
+		p     process_t
+		v     *string
+		inode *Cnode_t
+		err   error
+	)
+
+	p.interp = interp
+
+	for node != nil {
+		p.push_context(node)
+		p.push_string_value("") // placeholder for return value
+
+		for inode = node.child; inode != nil; inode = inode.next {
+			switch inode.code {
+			case CNODE_BRACKET:
+				//p.push_context(inode)
+				//p.push_string_value("")
+				//node =
+
+			case CNODE_TEXT:
+
+				//fmt.Printf("XXXXXXXXXXXXXXXXXXXx[%s]\n", string(inode.token))
+				err = p.push_string_value(string(inode.token))
+				if err != nil {
+					goto oops
+				}
+			}
+		}
+
+		fmt.Printf("CALLING\n")
+		err = p.call()
+		if err != nil {
+			goto oops
+		}
+		if p.ctx.parent_ctx != nil {
+			p.pop_context()
+		}
+
+		node = node.next
+	}
+
+	v = (*string)(p.pop_value())
+	p.pop_context()
+	if p.ctx != nil {
+		err = fmt.Errorf("internal error - dangling process context")
+		goto oops
+	}
+
+	return v, nil
+
+oops:
+	return nil, err
+}
+
+func (interp *Interp) eval_atom_node_old(node *Cnode_t) (*string, error) {
 
 	var (
 		p   process_t
@@ -186,11 +249,6 @@ func (interp *Interp) eval_atom_node(node *Cnode_t) (*string, error) {
 				goto oops
 			}
 
-		case CNODE_SEP:
-			// skip
-		case CNODE_EOL:
-			// skip
-
 		default:
 			err = fmt.Errorf("internal error - non-atom node - %d", node.code)
 			goto oops
diff --git a/interp/feed.go b/interp/feed.go
index e18f823..d932b84 100644
--- a/interp/feed.go
+++ b/interp/feed.go
@@ -392,7 +392,7 @@ func (inter *Interp) add_cnode_to_feed_struct(feed *feed_struct_t, cnode *Cnode_
 }
 
 var feed_to_cnode_code_tab [11]cnode_code_t = [11]cnode_code_t{
-	FEED_TOP:          CNODE_EOL, // this must never be used
+	FEED_TOP:          CNODE_INVALID, // this must never be used
 	FEED_INIT:         CNODE_INIT,
 	FEED_BRACKET:      CNODE_BRACKET,
 	FEED_BRACE:        CNODE_BRACE,
@@ -400,9 +400,9 @@ var feed_to_cnode_code_tab [11]cnode_code_t = [11]cnode_code_t{
 	FEED_DQUOTE:       CNODE_DQUOTE,
 	FEED_DQUOTED_TEXT: CNODE_TEXT,
 	FEED_DOLLAR:       CNODE_VAR,
-	FEED_SEP:          CNODE_SEP,
+	FEED_SEP:          CNODE_INVALID,
 	FEED_WORD:         CNODE_TEXT,
-	FEED_EOL:          CNODE_EOL,
+	FEED_EOL:          CNODE_INVALID,
 }
 
 func (interp *Interp) pop_feed_struct() *feed_struct_t {
@@ -445,6 +445,9 @@ func (interp *Interp) pop_feed_struct() *feed_struct_t {
 		parent.cnode_cont = false
 	} else {
 		cnode = &Cnode_t{code: feed_to_cnode_code_tab[feed.state], token: feed.token}
+		if cnode.code == CNODE_INVALID {
+			panic("internal error - CNODE INVALID encountered")
+		}
 		if cnode.code == CNODE_BRACKET || cnode.code == CNODE_BRACE || cnode.code == CNODE_INIT {
 			// popping a container feed struct
 			interp.finalize_feed_struct(feed, true)
@@ -452,15 +455,7 @@ func (interp *Interp) pop_feed_struct() *feed_struct_t {
 		} else if cnode.code == CNODE_DQUOTE {
 			interp.finalize_feed_struct(feed, false)
 			cnode.child = feed.cnode_first
-		} /*else if cnode.code == CNODE_VAR {
-			fmt.Printf(">>>>\n")
-			interp.dump_cnodes(parent.cnode_first, true)
-			fmt.Printf(">>>>\n")
-			interp.dump_cnodes(parent.cnode_tmp_first, true)
-			fmt.Printf(">>>>\n")
-			interp.dump_cnodes(cnode, true)
-
-		}*/
+		}
 
 		// add the current cnode to the parent feed struct
 		interp.add_cnode_to_feed_struct(parent, cnode)
diff --git a/interp/pcl.go b/interp/pcl.go
index 3ce0bd3..2d2d031 100644
--- a/interp/pcl.go
+++ b/interp/pcl.go
@@ -54,14 +54,13 @@ type call_frame_t struct {
 type cnode_code_t int
 
 const (
-	CNODE_INIT cnode_code_t = iota
+	CNODE_INVALID cnode_code_t = iota
+	CNODE_INIT
 	CNODE_BRACKET
 	CNODE_BRACE
 	CNODE_DQUOTE
 	CNODE_VAR
 	CNODE_TEXT
-	CNODE_SEP
-	CNODE_EOL
 	CNODE_STMT
 	CNODE_JOIN // merge the two top elements off the stack
 )
@@ -329,12 +328,6 @@ func (interp *Interp) __dump_cnodes(node *Cnode_t, nl bool, tabs int) {
 			// contained inside other containers, some escaping is required
 			fmt.Printf("%s", string(node.token))
 
-		case CNODE_SEP:
-			fmt.Printf(" ")
-
-		case CNODE_EOL:
-			fmt.Printf("\n")
-
 		case CNODE_JOIN:
 			// do nothing
 			//fmt.Printf("<M>")