libropkg: implement package list expression parsing

libropkg/include/ropkg/pkg-expr.h

@@ -0,0 +1,51 @@
+#ifndef ROPKG_PKG_EXPR_H_
+#define ROPKG_PKG_EXPR_H_
+
+#include <ropkg/misc.h>
+#include <ropkg/status.h>
+
+enum ropkg_pkg_expr_type {
+	ROPKG_PKG_EXPR_NODE_PKG,
+	ROPKG_PKG_EXPR_NODE_AND,
+	ROPKG_PKG_EXPR_NODE_OR,
+	ROPKG_PKG_EXPR_NODE_GROUP,
+};
+
+enum ropkg_comparison_op;
+
+struct ropkg_version;
+
+struct ropkg_pkg_expr;
+struct ropkg_pkg_expr_pkg;
+struct ropkg_pkg_expr_and;
+struct ropkg_pkg_expr_or;
+
+ROPKG_API void ropkg_pkg_expr_destroy(struct ropkg_pkg_expr *expr);
+
+ROPKG_API b_result
+ropkg_pkg_expr_parse(const char *s, struct ropkg_pkg_expr **out);
+
+ROPKG_API enum ropkg_pkg_expr_type ropkg_pkg_expr_get_type(
+	const struct ropkg_pkg_expr *expr);
+
+ROPKG_API struct ropkg_pkg_expr_pkg *ropkg_pkg_expr_pkg_create(void);
+ROPKG_API const char *ropkg_pkg_expr_pkg_get_name(
+	const struct ropkg_pkg_expr_pkg *expr);
+ROPKG_API enum ropkg_comparison_op ropkg_pkg_expr_pkg_get_version_predicate(
+	const struct ropkg_pkg_expr_pkg *expr);
+ROPKG_API const struct ropkg_version *ropkg_pkg_expr_pkg_get_version(
+	const struct ropkg_pkg_expr_pkg *expr);
+
+ROPKG_API struct ropkg_pkg_expr_and *ropkg_pkg_expr_and_create(void);
+ROPKG_API const struct ropkg_pkg_expr *ropkg_pkg_expr_and_get_left_node(
+	const struct ropkg_pkg_expr_and *expr);
+ROPKG_API const struct ropkg_pkg_expr *ropkg_pkg_expr_and_get_right_node(
+	const struct ropkg_pkg_expr_and *expr);
+
+ROPKG_API struct ropkg_pkg_expr_or *ropkg_pkg_expr_or_create(void);
+ROPKG_API const struct ropkg_pkg_expr *ropkg_pkg_expr_or_get_left_node(
+	const struct ropkg_pkg_expr_or *expr);
+ROPKG_API const struct ropkg_pkg_expr *ropkg_pkg_expr_or_get_right_node(
+	const struct ropkg_pkg_expr_or *expr);
+
+#endif