diff --git a/ase/awk/awk.h b/ase/awk/awk.h
index 0bc9c915..45bef3a4 100644
--- a/ase/awk/awk.h
+++ b/ase/awk/awk.h
@@ -1,5 +1,5 @@
 /* 
- * $Id: awk.h,v 1.15 2006-01-19 16:28:21 bacon Exp $
+ * $Id: awk.h,v 1.16 2006-01-20 07:29:53 bacon Exp $
  */
 
 #ifndef _XP_AWK_AWK_H_
@@ -36,7 +36,8 @@ enum
 	XP_AWK_EEXPR,   /* expression expected */
 
 	XP_AWK_EWHILE,  /* keyword 'while' is expected */
-	XP_AWK_EASSIGN  /* assignment statement expected */
+	XP_AWK_EASSIGN, /* assignment statement expected */
+	XP_AWK_EIDENT   /* identifier expected */
 };
 
 /*
diff --git a/ase/awk/makefile.in b/ase/awk/makefile.in
index 8dc958c3..92f169ef 100644
--- a/ase/awk/makefile.in
+++ b/ase/awk/makefile.in
@@ -1,4 +1,4 @@
-SRCS = awk.c parse.c
+SRCS = awk.c parse.c tree.c sa.c
 OBJS = $(SRCS:.c=.o)
 OUT = libxpawk.a
 
diff --git a/ase/awk/parse.c b/ase/awk/parse.c
index bf187aeb..1d94bec1 100644
--- a/ase/awk/parse.c
+++ b/ase/awk/parse.c
@@ -1,5 +1,5 @@
 /*
- * $Id: parse.c,v 1.26 2006-01-19 16:28:21 bacon Exp $
+ * $Id: parse.c,v 1.27 2006-01-20 07:29:54 bacon Exp $
  */
 
 #include <xp/awk/awk.h>
@@ -94,6 +94,8 @@ static xp_awk_node_t* __parse_break (xp_awk_t* awk);
 static xp_awk_node_t* __parse_continue (xp_awk_t* awk);
 static xp_awk_node_t* __parse_return (xp_awk_t* awk);
 static xp_awk_node_t* __parse_exit (xp_awk_t* awk);
+static xp_awk_node_t* __parse_next (xp_awk_t* awk);
+static xp_awk_node_t* __parse_nextfile (xp_awk_t* awk);
 
 static int __get_token (xp_awk_t* awk);
 static int __get_char (xp_awk_t* awk);
@@ -203,7 +205,89 @@ break;
 
 static xp_awk_node_t* __parse_funcdcl (xp_awk_t* awk)
 {
-	return XP_NULL;
+	xp_char_t* name;
+	xp_awk_node_t* body;
+
+/* TODO: *******************************/
+
+	/* skip the keyword 'function' */
+	if (__get_token(awk) == -1) return XP_NULL;  
+	if (!MATCH(awk,TOKEN_IDENT)) PANIC (awk, XP_AWK_EIDENT);
+
+	name = xp_strdup (XP_STR_BUF(&awk->token.name));
+	if (name == XP_NULL) PANIC (awk, XP_AWK_ENOMEM);
+
+	/* skip the function name */
+	if (__get_token(awk) == -1) {
+		xp_free (name);
+		return XP_NULL;  
+	}
+
+	if (!MATCH(awk,TOKEN_LPAREN)) {
+		xp_free (name);
+		PANIC (awk, XP_AWK_ELPAREN);
+	}	
+
+	if (__get_token(awk) == -1) {
+		xp_free (name);
+		return XP_NULL;
+	}
+
+	if (MATCH(awk,TOKEN_RPAREN)) {
+		/* no function parameter */
+		if (__get_token(awk) == -1) {
+			xp_free (name);
+			return XP_NULL;
+		}
+	}
+	else {
+		while (1) {
+			if (!MATCH(awk,TOKEN_IDENT)) {
+				xp_free (name);
+				PANIC (awk, XP_AWK_EIDENT);
+			}
+
+			if (__get_token(awk) == -1) {
+				xp_free (name);
+				return XP_NULL;
+			}	
+
+			if (MATCH(awk,TOKEN_RPAREN)) break;
+
+			if (!MATCH(awk,TOKEN_COMMA)) {
+				xp_free (name);
+				PANIC (awk, XP_AWK_ECOMMA);
+			}
+
+			if (__get_token(awk) == -1) {
+				xp_free (name);
+				return XP_NULL;
+			}
+		}
+
+		if (__get_token(awk) == -1) {
+			xp_free (name);
+			return XP_NULL;
+		}
+	}
+
+	if (!MATCH(awk,TOKEN_LBRACE)) {
+// TODO: cleanup
+		PANIC (awk, XP_AWK_ELBRACE);
+	}
+	if (__get_token(awk) == -1) {
+// TODO: cleanup
+		return XP_NULL; 
+	}
+
+	body = __parse_block (awk);
+	if (body == XP_NULL) {
+// TODO: cleanup;
+		return XP_NULL;
+	}
+
+// TODO: return something else...
+	return body;
 }
 
 static xp_awk_node_t* __parse_patnact (xp_awk_t* awk)
@@ -366,12 +450,13 @@ static xp_awk_node_t* __parse_statement_nb (xp_awk_t* awk)
 		if (__get_token(awk) == -1) return XP_NULL;
 		node = __parse_exit(awk);
 	}
-/*
-TODO:
+
+/* TODO:
 	else if (MATCH(awk,TOKEN_DELETE)) {
 		if (__get_token(awk) == -1) return XP_NULL;
 		node = __parse_delete(awk);
 	}
+*/
 	else if (MATCH(awk,TOKEN_NEXT)) {
 		if (__get_token(awk) == -1) return XP_NULL;
 		node = __parse_next(awk);
@@ -380,7 +465,6 @@ TODO:
 		if (__get_token(awk) == -1) return XP_NULL;
 		node = __parse_nextfile(awk);
 	}
-*/
 	else {
 		node = __parse_expression(awk);
 	}
@@ -411,8 +495,48 @@ static xp_awk_node_t* __parse_expression (xp_awk_t* awk)
 	 * <basic expression> ::= 
 	 */
 
-	xp_awk_node_t* x;
+	xp_awk_node_t* x, * y;
+	xp_awk_node_assign_t* node;
+
+	x = __parse_basic_expr (awk, XP_NULL);
+	if (x == XP_NULL) return XP_NULL;
+	if (!MATCH(awk,TOKEN_ASSIGN)) return x;
+
+	xp_assert (x->next == XP_NULL);
+	if (x->type != XP_AWK_NODE_VAR && x->type != XP_AWK_NODE_IDX) {
+		xp_awk_clrpt (x);
+		PANIC (awk, XP_AWK_EASSIGN);
+	}
+
+	if (__get_token(awk) == -1) {
+		xp_awk_clrpt (x);
+		return XP_NULL;
+	}
+
+	y = __parse_basic_expr (awk, XP_NULL);
+	if (y == XP_NULL) {
+		xp_awk_clrpt (x);
+		return XP_NULL;
+	}
+
+	node = (xp_awk_node_assign_t*)xp_malloc (xp_sizeof(xp_awk_node_assign_t));
+	if (node == XP_NULL) {
+		xp_awk_clrpt (x);
+		xp_awk_clrpt (y);
+		PANIC (awk, XP_AWK_ENOMEM);
+	}
+
+	node->type = XP_AWK_NODE_ASSIGN;
+	node->next = XP_NULL;
+	node->left = x;
+	node->right = y;
+
+	return (xp_awk_node_t*)node;
+
 	 
+#if 0
+	xp_awk_node_t* x;
+
 	if (MATCH(awk,TOKEN_IDENT)) {
 		/* the expression starts with an identifier */
 
@@ -424,15 +548,6 @@ static xp_awk_node_t* __parse_expression (xp_awk_t* awk)
 			return XP_NULL;
 		}
 
-/*
-		if (MATCH(awk,TOKEN_LBRACK)) {
-// TODO: hashidx.... 
-			xp_awk_node_t* node;
-			node = __parse_hashidx (awk, name);
-			if (node == XP_NULL) xp_free (name);
-			return (xp_awk_node_t*)node;
-		}
-*/
 
 		if (MATCH(awk,TOKEN_ASSIGN)) {
 			if (__get_token(awk) == -1) {
@@ -463,8 +578,10 @@ static xp_awk_node_t* __parse_expression (xp_awk_t* awk)
 	}
 
 	return x;
+#endif
 }
 
+#if 0
 static xp_awk_node_t* __parse_assignment (xp_awk_t* awk, xp_char_t* ident)
 {
 	xp_awk_node_assign_t* node;
@@ -496,6 +613,7 @@ static xp_awk_node_t* __parse_assignment (xp_awk_t* awk, xp_char_t* ident)
 
 	return (xp_awk_node_t*)node;
 }
+#endif
 
 static xp_awk_node_t* __parse_basic_expr (xp_awk_t* awk, xp_char_t* ident)
 {
@@ -734,36 +852,30 @@ static xp_awk_node_t* __parse_hashidx (xp_awk_t* awk, xp_char_t* name)
 
 	if (__get_token(awk) == -1) return XP_NULL;
 
-xp_printf (XP_TEXT("----------------\n"));
 	idx = __parse_expression (awk);
 	if (idx == XP_NULL) return XP_NULL;
-xp_printf (XP_TEXT("+++++++++++++++++++\n"));
 
 	if (!MATCH(awk,TOKEN_RBRACK)) {
 		xp_awk_clrpt (idx);
 		PANIC (awk, XP_AWK_ERBRACK);
 	}
 
-xp_printf (XP_TEXT("$$$$$$$$$$$$$$$$$$$$$$\n"));
 	if (__get_token(awk) == -1) {
 		xp_awk_clrpt (idx);
 		return XP_NULL;
 	}
 
-xp_printf (XP_TEXT("#######################\n"));
 	node = (xp_awk_node_idx_t*) xp_malloc (xp_sizeof(xp_awk_node_idx_t));
 	if (node == XP_NULL) {
 		xp_awk_clrpt (idx);
 		PANIC (awk, XP_AWK_ENOMEM);
 	}
 
-xp_printf (XP_TEXT("~~~~~~~~~~~~~~~~~~~~~~~~~`\n"));
 	node->type = XP_AWK_NODE_IDX;
 	node->next = XP_NULL;
 	node->name = name;
 	node->idx = idx;
 
-xp_printf (XP_TEXT("%%%%%%%%%%%%%%%%%%%%%%%%%[%s]\n"), XP_STR_BUF(&awk->token.name));
 	return (xp_awk_node_t*)node;
 }
 
@@ -1152,6 +1264,30 @@ static xp_awk_node_t* __parse_exit (xp_awk_t* awk)
 	return (xp_awk_node_t*)node;
 }
 
+static xp_awk_node_t* __parse_next (xp_awk_t* awk)
+{
+	xp_awk_node_t* node;
+
+	node = (xp_awk_node_t*) xp_malloc (xp_sizeof(xp_awk_node_t));
+	if (node == XP_NULL) PANIC (awk, XP_AWK_ENOMEM);
+	node->type = XP_AWK_NODE_NEXT;
+	node->next = XP_NULL;
+	
+	return node;
+}
+
+static xp_awk_node_t* __parse_nextfile (xp_awk_t* awk)
+{
+	xp_awk_node_t* node;
+
+	node = (xp_awk_node_t*) xp_malloc (xp_sizeof(xp_awk_node_t));
+	if (node == XP_NULL) PANIC (awk, XP_AWK_ENOMEM);
+	node->type = XP_AWK_NODE_NEXTFILE;
+	node->next = XP_NULL;
+	
+	return node;
+}
+
 static int __get_token (xp_awk_t* awk)
 {
 	xp_cint_t c;
diff --git a/ase/awk/sa.c b/ase/awk/sa.c
new file mode 100644
index 00000000..4c3bdcc1
--- /dev/null
+++ b/ase/awk/sa.c
@@ -0,0 +1,87 @@
+/*
+ * $Id: sa.c,v 1.1 2006-01-20 07:32:38 bacon Exp $
+ */
+
+#include <xp/awk/sa.h>
+
+#ifdef __STAND_ALONE
+
+xp_str_t* xp_str_open (xp_str_t* str, xp_size_t capa)
+{
+	if (str == XP_NULL) {
+		str = (xp_str_t*)xp_malloc (sizeof(xp_str_t));
+		if (str == XP_NULL) return XP_NULL;
+		str->__dynamic = xp_true;
+	}
+	else str->__dynamic = xp_false;
+
+	str->buf = (xp_char_t*)xp_malloc (
+		xp_sizeof(xp_char_t) * (capa + 1));
+	if (str->buf == XP_NULL) {
+		if (str->__dynamic) xp_free (str);
+		return XP_NULL;
+	}
+
+	str->size      = 0;
+	str->capa  = capa;
+	str->buf[0] = XP_CHAR('\0');
+
+	return str;
+}
+
+void xp_str_close (xp_str_t* str)
+{
+	xp_free (str->buf);
+	if (str->__dynamic) xp_free (str);
+}
+
+xp_size_t xp_str_cat (xp_str_t* str, const xp_char_t* s)
+{
+	/* TODO: improve it */
+	return xp_str_ncat (str, s, xp_strlen(s));
+}
+
+static xp_size_t __strncpy (xp_char_t* buf, const xp_char_t* str, xp_size_t len)
+{
+	const xp_char_t* end = str + len;
+	while (str < end) *buf++ = *str++;
+	*buf = XP_CHAR('\0');
+	return len;
+}
+
+xp_size_t xp_str_ncat (xp_str_t* str, const xp_char_t* s, xp_size_t len)
+{
+	xp_char_t* buf;
+	xp_size_t capa;
+
+	if (len > str->capa - str->size) {
+		capa = str->size + len;
+
+		/* double the capa if necessary for concatenation */
+		if (capa < str->capa * 2) capa = str->capa * 2;
+
+		buf = (xp_char_t*)xp_realloc (
+			str->buf, xp_sizeof(xp_char_t) * (capa + 1));
+		if (buf == XP_NULL) return (xp_size_t)-1;
+
+		str->capa = capa;
+		str->buf = buf;
+	}
+
+	str->size += __strncpy (&str->buf[str->size], s, len);
+	str->buf[str->size] = XP_CHAR('\0');
+	return str->size;
+}
+
+xp_size_t xp_str_ccat (xp_str_t* str, xp_char_t c)
+{
+	return xp_str_ncat (str, &c, 1);
+}
+
+void xp_str_clear (xp_str_t* str)
+{
+	str->size = 0;
+	str->buf[0] = XP_CHAR('\0');
+}
+
+#endif
diff --git a/ase/awk/sa.h b/ase/awk/sa.h
new file mode 100644
index 00000000..f6f6a871
--- /dev/null
+++ b/ase/awk/sa.h
@@ -0,0 +1,93 @@
+/*
+ * $Id: sa.h,v 1.1 2006-01-20 07:32:38 bacon Exp $
+ */
+
+#ifndef _XP_AWK_SA_H_
+#define _XP_AWK_SA_H_
+
+#ifdef __STAND_ALONE 
+
+#include <stdio.h>
+#include <wchar.h>
+#include <wctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#define xp_malloc malloc
+#define xp_realloc realloc
+#define xp_free free
+#define xp_assert assert
+#define xp_printf wprintf
+
+#define xp_isdigit iswdigit
+#define xp_isalpha iswalpha
+#define xp_isalnum iswalnum
+#define xp_isspace iswspace
+
+#define xp_strcmp wcscmp
+#define xp_strlen wcslen
+#ifdef _WIN32
+#define xp_strdup _wcsdup
+#else
+#define xp_strdup wcsdup
+#endif
+
+#define xp_main  main
+
+#define XP_CHAR(c) L##c
+#define XP_TEXT(c) L##c
+#define XP_CHAR_EOF WEOF
+
+#define XP_NULL NULL
+
+#define xp_sizeof(n)   (sizeof(n))
+#define xp_countof(n)  (sizeof(n) / sizeof(n[0]))
+
+#define xp_true (0 == 0)
+#define xp_false (0 != 0)
+
+typedef wchar_t xp_char_t;
+typedef wint_t  xp_cint_t;
+typedef size_t  xp_size_t;
+typedef int	xp_bool_t;
+
+#ifdef _WIN32
+typedef long	xp_ssize_t;
+#else
+typedef ssize_t xp_ssize_t;
+#endif
+
+#define XP_STR_LEN(x)  ((x)->size)
+#define XP_STR_SIZE(x) ((x)->size + 1)
+#define XP_STR_CAPA(x) ((x)->capa)
+#define XP_STR_BUF(x)  ((x)->buf)
+
+typedef struct xp_str_t xp_str_t;
+
+struct xp_str_t
+{
+	xp_char_t* buf;
+	xp_size_t size;
+	xp_size_t capa;
+	xp_bool_t __dynamic;
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+xp_str_t* xp_str_open (xp_str_t* str, xp_size_t capa);
+void xp_str_close (xp_str_t* str);
+xp_size_t xp_str_cat (xp_str_t* str, const xp_char_t* s);
+xp_size_t xp_str_ncat (xp_str_t* str, const xp_char_t* s, xp_size_t len);
+xp_size_t xp_str_ccat (xp_str_t* str, xp_char_t c);
+void xp_str_clear (xp_str_t* str);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#endif
diff --git a/ase/awk/tree.c b/ase/awk/tree.c
index 405bc584..c14dc369 100644
--- a/ase/awk/tree.c
+++ b/ase/awk/tree.c
@@ -1,5 +1,5 @@
 /*
- * $Id: tree.c,v 1.8 2006-01-19 16:28:21 bacon Exp $
+ * $Id: tree.c,v 1.9 2006-01-20 07:29:54 bacon Exp $
  */
 
 #include <xp/awk/awk.h>
@@ -34,7 +34,8 @@ static int __print_expr_node (xp_awk_node_t* node)
 {
 	switch (node->type) {
 	case XP_AWK_NODE_ASSIGN:
-		xp_printf (XP_TEXT("%s = "), ((xp_awk_node_assign_t*)node)->left);
+		if (__print_expr_node (((xp_awk_node_assign_t*)node)->left) == -1) return -1;
+		xp_printf (XP_TEXT(" = "));
 		if (__print_expr_node (((xp_awk_node_assign_t*)node)->right) == -1) return -1;
 		xp_assert ((((xp_awk_node_assign_t*)node)->right)->next == XP_NULL);
 		break;
@@ -44,7 +45,9 @@ static int __print_expr_node (xp_awk_node_t* node)
 		if (__print_expr_node (((xp_awk_node_expr_t*)node)->left) == -1) return -1;
 		xp_assert ((((xp_awk_node_expr_t*)node)->left)->next == XP_NULL);
 		xp_printf (XP_TEXT(" %c "), __binop_char[((xp_awk_node_expr_t*)node)->opcode]);
+		if (((xp_awk_node_expr_t*)node)->right->type == XP_AWK_NODE_ASSIGN) xp_printf (XP_TEXT("("));
 		if (__print_expr_node (((xp_awk_node_expr_t*)node)->right) == -1) return -1;
+		if (((xp_awk_node_expr_t*)node)->right->type == XP_AWK_NODE_ASSIGN) xp_printf (XP_TEXT(")"));
 		xp_assert ((((xp_awk_node_expr_t*)node)->right)->next == XP_NULL);
 		xp_printf (XP_TEXT(")"));
 		break;
@@ -227,6 +230,16 @@ static void __print_statements (xp_awk_node_t* tree, int depth)
 			}
 			break;
 
+		case XP_AWK_NODE_NEXT:
+			__print_tabs (depth);
+			xp_printf (XP_TEXT("next;\n"));
+			break;
+
+		case XP_AWK_NODE_NEXTFILE:
+			__print_tabs (depth);
+			xp_printf (XP_TEXT("nextfile;\n"));
+			break;
+
 		default:
 			__print_tabs (depth);
 			if (__print_expr_node(p) == 0) {
@@ -293,6 +306,8 @@ void xp_awk_clrpt (xp_awk_node_t* tree)
 
 		case XP_AWK_NODE_BREAK:
 		case XP_AWK_NODE_CONTINUE:
+		case XP_AWK_NODE_NEXT:
+		case XP_AWK_NODE_NEXTFILE:
 			xp_free (p);
 			break;
 		
@@ -303,7 +318,7 @@ void xp_awk_clrpt (xp_awk_node_t* tree)
 			break;
 
 		case XP_AWK_NODE_ASSIGN:
-			xp_free (((xp_awk_node_assign_t*)p)->left);
+			xp_awk_clrpt (((xp_awk_node_assign_t*)p)->left);
 			xp_awk_clrpt (((xp_awk_node_assign_t*)p)->right);
 			xp_free (p);
 			break;
diff --git a/ase/awk/tree.h b/ase/awk/tree.h
index 4f3ba72c..c17d318a 100644
--- a/ase/awk/tree.h
+++ b/ase/awk/tree.h
@@ -1,5 +1,5 @@
 /*
- * $Id: tree.h,v 1.13 2006-01-19 16:28:21 bacon Exp $
+ * $Id: tree.h,v 1.14 2006-01-20 07:29:54 bacon Exp $
  */
 
 #ifndef _XP_AWK_TREE_H_
@@ -13,6 +13,8 @@ enum
 	XP_AWK_NODE_CONTINUE,
 	XP_AWK_NODE_RETURN,
 	XP_AWK_NODE_EXIT,
+	XP_AWK_NODE_NEXT,
+	XP_AWK_NODE_NEXTFILE,
 	XP_AWK_NODE_ASSIGN,
 	XP_AWK_NODE_BINARY,
 	XP_AWK_NODE_UNARY,
@@ -56,7 +58,7 @@ struct xp_awk_node_block_t
 struct xp_awk_node_assign_t
 {
 	XP_AWK_NODE_HDR;
-	xp_char_t* left;
+	xp_awk_node_t* left;
 	xp_awk_node_t* right;
 };