From 1644bbec6161ec971a2ba3c213ce285b995cac22 Mon Sep 17 00:00:00 2001
From: Stefano Brivio <sbrivio@redhat.com>
Date: Thu, 1 Jun 2023 11:04:38 +0200
Subject: cooker: OP_CALL and OP_COPY stuff

...mostly.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
 cooker/parse.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 83 insertions(+), 9 deletions(-)

(limited to 'cooker/parse.c')

diff --git a/cooker/parse.c b/cooker/parse.c
index acb6810..64901f5 100644
--- a/cooker/parse.c
+++ b/cooker/parse.c
@@ -12,18 +12,11 @@
 #include "calls.h"
 #include "cooker.h"
 #include "gluten.h"
+#include "call.h"
 #include "match.h"
 #include "emit.h"
 #include "util.h"
 
-#include "calls/net.h"
-
-static void handle_call(struct gluten_ctx *g, JSON_Value *value)
-{
-	(void)g;
-	(void)value;
-}
-
 static void handle_inject(struct gluten_ctx *g, JSON_Value *value)
 {
 	(void)g;
@@ -64,7 +57,7 @@ struct rule_parser {
 	void (*fn)(struct gluten_ctx *g, JSON_Value *value);
 } parsers[] = {
 	{ "match",	handle_matches },
-	{ "call",	handle_call },
+	{ "call",	handle_calls },
 	{ "inject",	handle_inject },
 	{ "limit",	handle_limit },
 	{ "return",	handle_return },
@@ -73,6 +66,87 @@ struct rule_parser {
 	{ NULL, NULL },
 };
 
+/**
+ * value_get_num() - Get numeric value from description matching JSON input
+ * @desc:	Description of possible values from model
+ * @value:	JSON value
+ *
+ * Return: numeric value
+ */
+long long value_get_num(struct num *desc, JSON_Value *value)
+{
+	const char *s = NULL;
+	long long n;
+
+	if (desc) {
+		s = json_value_get_string(value);
+		for (; desc->name && s && strcmp(s, desc->name); desc++);
+		if (s && !desc->name)
+			die("   Invalid value %s", s);
+
+		n = desc->value;
+	}
+
+	if (!s) {
+		if (json_value_get_type(value) != JSONNumber)
+			die("   Invalid value type");
+
+		n = json_value_get_number(value);
+	}
+
+	return n;
+}
+
+/**
+ * value_get() - Get generic value from description matching JSON input
+ * @desc:	Description of possible values from model
+ * @type:	Data type from model
+ * @value:	JSON value
+ * @out:	Corresponding bytecode value, set on return
+ */
+void value_get(union desc desc, enum type type, JSON_Value *value,
+	       union value *out)
+{
+	if (TYPE_IS_NUM(type))
+		out->v_num = value_get_num(desc.d_num, value);
+}
+
+/**
+ * select_field() - Select field based on value and description
+ * @g:		gluten context
+ * @pos:	Index of syscall argument being parsed
+ * @s:		Possible selection choices
+ * @v:		Selector value
+ *
+ * Return: pointer to field, NULL if selector refers to a different argument
+ */
+struct field *select_field(struct gluten_ctx *g, int pos,
+			   struct select *s, union value v)
+{
+	if (TYPE_IS_NUM(s->field->type)) {
+		struct select_num *d_num;
+
+		for (d_num = s->desc.d_num; d_num->target.f.type; d_num++) {
+			if (d_num->value == v.v_num) {
+				if (d_num->target.pos == pos)
+					return &d_num->target.f;
+
+				if (g) {
+					pos = d_num->target.pos;
+					g->selected_arg[pos] = &d_num->target;
+				}
+
+				return NULL;
+			}
+		}
+
+		if (!d_num->target.f.type)
+			die("   No match for numeric selector %i", v.v_num);
+	}
+
+	die("   not supported yet");
+}
+
 /**
  * parse_block() - Parse a transformation block with rules
  * @g:		gluten context
-- 
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