fluidattacks-blends-domain 0.28.0

Blends functional core: pure AST graph to syntax graph (no_std)
Documentation 
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use crate::{
    syntax::{
        builders::variable_declaration::build_variable_declaration_node,
        fields::swift::{pattern, property_declaration},
        SyntaxGraphArgs, SyntaxGraphError,
    },
    utilities::text_nodes::node_to_str,
    CodeGraph, NodeId,
};

pub fn reader(
    args: &mut SyntaxGraphArgs<'_>,
    n_id: NodeId,
) -> Result<Option<NodeId>, SyntaxGraphError> {
    let graph = args.ast_graph;

    let mut variable_id = args.required_field_alt(n_id, property_declaration::NAME)?;
    if graph.label_type(variable_id) == Some("pattern") {
        if let Some(identifier) = args.optional_field_alt(variable_id, pattern::BOUND_IDENTIFIER) {
            variable_id = identifier;
        }
    }
    let var_name = node_to_str(graph, variable_id);

    let value_id = args
        .optional_field_alt(n_id, property_declaration::VALUE)
        .or_else(|| args.optional_field_alt(n_id, property_declaration::COMPUTED_VALUE));

    build_variable_declaration_node(args, n_id, var_name, None, value_id, None, None).map(Some)
}