From b5c463bfa07770ee5ee8e34807ee8f002374a2ef Mon Sep 17 00:00:00 2001
From: hyung-hwan <hyunghwan.chung@gmail.com>
Date: Wed, 13 Feb 2008 02:56:21 +0000
Subject: [PATCH]

---
 ase/awk/parse.c | 265 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 265 insertions(+)

diff --git a/ase/awk/parse.c b/ase/awk/parse.c
index 490e32a0..246367d0 100644
--- a/ase/awk/parse.c
+++ b/ase/awk/parse.c
@@ -3073,6 +3073,271 @@ static ase_awk_nde_t* parse_primary (ase_awk_t* awk, ase_size_t line)
 	return ASE_NULL;
 }
 
+#if 0
+ORIGINAL...
+static ase_awk_nde_t* parse_primary_ident (ase_awk_t* awk, ase_size_t line)
+{
+	ase_char_t* name_dup;
+	ase_size_t name_len;
+	ase_awk_bfn_t* bfn;
+	ase_size_t idxa;
+
+	ASE_ASSERT (MATCH(awk,TOKEN_IDENT));
+
+	name_dup = ase_awk_strxdup (awk,
+		ASE_STR_BUF(&awk->token.name),
+		ASE_STR_LEN(&awk->token.name));
+	if (name_dup == ASE_NULL) 
+	{
+		SETERRLIN (awk, ASE_AWK_ENOMEM, line);
+		return ASE_NULL;
+	}
+	name_len = ASE_STR_LEN(&awk->token.name);
+
+	if (get_token(awk) == -1) 
+	{
+		ASE_AWK_FREE (awk, name_dup);
+		return ASE_NULL;			
+	}
+
+	/* check if name_dup is an intrinsic function name */
+	bfn = ase_awk_getbfn (awk, name_dup, name_len);
+	if (bfn != ASE_NULL)
+	{
+		ase_awk_nde_t* nde;
+
+		if (!MATCH(awk,TOKEN_LPAREN))
+		{
+			/* an intrinsic function should be in the form 
+		 	 * of the function call */
+			ASE_AWK_FREE (awk, name_dup);
+			SETERRTOK (awk, ASE_AWK_ELPAREN);
+			return ASE_NULL;
+		}
+
+		nde = parse_fncall (awk, name_dup, name_len, bfn, line);
+		if (nde == ASE_NULL) ASE_AWK_FREE (awk, name_dup);
+		return (ase_awk_nde_t*)nde;
+	}
+
+	/* now we know that name_dup is a normal identifier. */
+	if (MATCH(awk,TOKEN_LBRACK)) 
+	{
+		ase_awk_nde_t* nde;
+		nde = parse_hashidx (awk, name_dup, name_len, line);
+		if (nde == ASE_NULL) ASE_AWK_FREE (awk, name_dup);
+		return (ase_awk_nde_t*)nde;
+	}
+	else if ((idxa = ase_awk_tab_rrfind (
+		&awk->parse.locals, 0, name_dup, name_len)) != (ase_size_t)-1)
+	{
+		/* local variable */
+
+		ase_awk_nde_var_t* nde;
+
+		if (MATCH(awk,TOKEN_LPAREN))
+		{
+			/* a local variable is not a function */
+			SETERRARG (awk, ASE_AWK_EFNNAME, line, name_dup, name_len);
+			ASE_AWK_FREE (awk, name_dup);
+			return ASE_NULL;
+		}
+
+		nde = (ase_awk_nde_var_t*) ASE_AWK_MALLOC (
+			awk, ASE_SIZEOF(ase_awk_nde_var_t));
+		if (nde == ASE_NULL) 
+		{
+			ASE_AWK_FREE (awk, name_dup);
+			SETERRLIN (awk, ASE_AWK_ENOMEM, line);
+			return ASE_NULL;
+		}
+
+		nde->type = ASE_AWK_NDE_LOCAL;
+		nde->line = line;
+		nde->next = ASE_NULL;
+		/*nde->id.name = ASE_NULL;*/
+		nde->id.name = name_dup;
+		nde->id.name_len = name_len;
+		nde->id.idxa = idxa;
+		nde->idx = ASE_NULL;
+
+		return (ase_awk_nde_t*)nde;
+	}
+	else if ((idxa = ase_awk_tab_find (
+		&awk->parse.params, 0, name_dup, name_len)) != (ase_size_t)-1)
+	{
+		/* parameter */
+
+		ase_awk_nde_var_t* nde;
+
+		if (MATCH(awk,TOKEN_LPAREN))
+		{
+			/* a parameter is not a function */
+			SETERRARG (awk, ASE_AWK_EFNNAME, line, name_dup, name_len);
+			ASE_AWK_FREE (awk, name_dup);
+			return ASE_NULL;
+		}
+
+		nde = (ase_awk_nde_var_t*) ASE_AWK_MALLOC (
+			awk, ASE_SIZEOF(ase_awk_nde_var_t));
+		if (nde == ASE_NULL) 
+		{
+			ASE_AWK_FREE (awk, name_dup);
+			SETERRLIN (awk, ASE_AWK_ENOMEM, line);
+			return ASE_NULL;
+		}
+
+		nde->type = ASE_AWK_NDE_ARG;
+		nde->line = line;
+		nde->next = ASE_NULL;
+		/*nde->id.name = ASE_NULL;*/
+		nde->id.name = name_dup;
+		nde->id.name_len = name_len;
+		nde->id.idxa = idxa;
+		nde->idx = ASE_NULL;
+
+		return (ase_awk_nde_t*)nde;
+	}
+	else if ((idxa = get_global (
+		awk, name_dup, name_len)) != (ase_size_t)-1)
+	{
+		/* global variable */
+
+		ase_awk_nde_var_t* nde;
+
+		if (MATCH(awk,TOKEN_LPAREN))
+		{
+			/* a global variable is not a function */
+			SETERRARG (awk, ASE_AWK_EFNNAME, line, name_dup, name_len);
+			ASE_AWK_FREE (awk, name_dup);
+			return ASE_NULL;
+		}
+
+		nde = (ase_awk_nde_var_t*) ASE_AWK_MALLOC (
+			awk, ASE_SIZEOF(ase_awk_nde_var_t));
+		if (nde == ASE_NULL) 
+		{
+			ASE_AWK_FREE (awk, name_dup);
+			SETERRLIN (awk, ASE_AWK_ENOMEM, line);
+			return ASE_NULL;
+		}
+
+		nde->type = ASE_AWK_NDE_GLOBAL;
+		nde->line = line;
+		nde->next = ASE_NULL;
+		/*nde->id.name = ASE_NULL;*/
+		nde->id.name = name_dup;
+		nde->id.name_len = name_len;
+		nde->id.idxa = idxa;
+		nde->idx = ASE_NULL;
+
+		return (ase_awk_nde_t*)nde;
+	}
+	else if (MATCH(awk,TOKEN_LPAREN)) 
+	{
+		/* function call */
+		ase_awk_nde_t* nde;
+
+		if (awk->option & ASE_AWK_IMPLICIT)
+		{
+			if (ase_map_get (awk->parse.named, name_dup, name_len) != ASE_NULL)
+			{
+				/* a function call conflicts with a named variable */
+				SETERRARG (awk, ASE_AWK_EVARRED, line, name_dup, name_len);
+				ASE_AWK_FREE (awk, name_dup);
+				return ASE_NULL;
+			}
+		}
+
+		nde = parse_fncall (awk, name_dup, name_len, ASE_NULL, line);
+		if (nde == ASE_NULL) ASE_AWK_FREE (awk, name_dup);
+		return (ase_awk_nde_t*)nde;
+	}	
+	else 
+	{
+		/* named variable */
+		ase_awk_nde_var_t* nde;
+
+		nde = (ase_awk_nde_var_t*) ASE_AWK_MALLOC (
+			awk, ASE_SIZEOF(ase_awk_nde_var_t));
+		if (nde == ASE_NULL) 
+		{
+			ASE_AWK_FREE (awk, name_dup);
+			SETERRLIN (awk, ASE_AWK_ENOMEM, line);
+			return ASE_NULL;
+		}
+
+		if (awk->option & ASE_AWK_IMPLICIT) 
+		{
+			#if 0
+			if (awk->option & ASE_AWK_UNIQUEFN)
+			{
+			#endif
+				ase_bool_t iscur = ase_false;
+
+				/* the name should not conflict with a function name */
+				/* check if it is a builtin function */
+				if (ase_awk_getbfn (awk, name_dup, name_len) != ASE_NULL)
+				{
+					SETERRARG (awk, ASE_AWK_EBFNRED, line, name_dup, name_len);
+					goto exit_func;
+				}
+
+				/* check if it is an AWK function */
+				if (awk->tree.cur_afn.ptr != ASE_NULL)
+				{
+					iscur = (ase_strxncmp (
+						awk->tree.cur_afn.ptr, awk->tree.cur_afn.len, 
+						name_dup, name_len) == 0);
+				}
+
+				if (iscur || ase_map_get (awk->tree.afns, name_dup, name_len) != ASE_NULL) 
+				{
+					/* the function is defined previously */
+					SETERRARG (awk, ASE_AWK_EAFNRED, line, name_dup, name_len);
+					goto exit_func;
+				}
+
+				if (ase_map_get (awk->parse.afns, name_dup, name_len) != ASE_NULL)
+				{
+					/* is it one of the function calls found so far? */
+					SETERRARG (awk, ASE_AWK_EAFNRED, line, name_dup, name_len);
+					goto exit_func;
+				}
+			#if 0
+			}
+			#endif
+
+			nde->type = ASE_AWK_NDE_NAMED;
+			nde->line = line;
+			nde->next = ASE_NULL;
+			nde->id.name = name_dup;
+			nde->id.name_len = name_len;
+			nde->id.idxa = (ase_size_t)-1;
+			nde->idx = ASE_NULL;
+
+			/* collect unique instances of a named variables for reference */
+			if (ase_map_put (awk->parse.named,
+				name_dup, name_len, (void*)line) == ASE_NULL)
+			{
+				  SETERRLIN (awk, ASE_AWK_ENOMEM, line);
+				  goto exit_func;
+			}
+
+			return (ase_awk_nde_t*)nde;
+		}
+
+		/* undefined variable */
+		SETERRARG (awk, ASE_AWK_EUNDEF, line, name_dup, name_len);
+
+	exit_func:
+		ASE_AWK_FREE (awk, name_dup);
+		ASE_AWK_FREE (awk, nde);
+
+		return ASE_NULL;
+	}
+}
+#endif
 static ase_awk_nde_t* parse_primary_ident (ase_awk_t* awk, ase_size_t line)
 {
 	ase_char_t* name_dup;