Interface AstNode

checker/cost.go:58–75

AstNode represents an AST node for the purpose of cost estimations.

// AstNode represents an AST node for the purpose of cost estimations.
type AstNode interface {
	// Path returns a field path through the provided type declarations to the type of the AstNode, or nil if the AstNode does not
	// represent type directly reachable from the provided type declarations.
	// The first path element is a variable. All subsequent path elements are one of: field name, '@items', '@keys', '@values'.
	Path() []string

	// Type returns the deduced type of the AstNode.
	Type() *types.Type

	// Expr returns the expression of the AstNode.
	Expr() ast.Expr

	// ComputedSize returns a size estimate of the AstNode derived from information available in the CEL expression.
	// For constants and inline list and map declarations, the exact size is returned. For concatenated list, strings
	// and bytes, the size is derived from the size estimates of the operands. nil is returned if there is no
	// computed size available.
	ComputedSize() *SizeEstimate
}

type astNode struct {
	path        []string