mps-aspect-intentions

name	mps-aspect-intentions
description	Use when defining or editing MPS intentions (the Alt+Enter context-action aspect) — adding `IntentionDeclaration` roots, parameterized or surround-with variants, description/isApplicable/execute blocks, child-filter functions, factory-initialized AST splicing, or debugging why an intention is not offered. Lives in the language's `intentions` model and uses `jetbrains.mps.lang.intentions`.
type	reference

MPS Intentions Aspect

Intentions are user-invoked transformations shown in the Alt+Enter popup on a node. They are the canonical way to offer optional refactorings (wrap, convert, introduce, preview) alongside quick-fixes. Authoring lives in <lang>/languageModels/intentions.mps, language jetbrains.mps.lang.intentions.

Critical Directives

• Edit intention roots through MPS MCP tools (mps_mcp_insert_root_node_from_json, mps_mcp_update_node, mps_mcp_parse_java_and_insert). Do not hand-edit serialized .mps files.
• The intentions model must list every language used in any block body as a used language. In particular, the add new initialized(...) surface syntax requires jetbrains.mps.lang.actions — add it with mps_mcp_model_used_language(kind="language"). Plain (non-NF_*) variants like parent.role.add new(C) do not need this import.
• Use n as C (MPS SNodeTypeCastExpression with asCast=true) — never a Java (C) n cast.
• Use () instead of whenever either operand might be .