feat(lsp): add call hierarchy support for TCL and MOM
Adds LSP call hierarchy support for TCL procedures and MOM events. A symbol index and identity logic underpin incoming and outgoing calls. LSP call hierarchy features are wired and changelog/README updated. - Implement data encoding for call hierarchy items and identity restoration - Wire LSP server to expose prepare_call_hierarchy, incoming_calls, and outgoing_calls - Add tests for cross-file calls and edge cases
This commit is contained in:
Christoph Brandau
@@ -51,8 +51,12 @@ from tools.inlay_hint import (
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)
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from tools.navigation import (
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SymbolIdentity,
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call_hierarchy_identity,
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call_hierarchy_items,
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definition_identities,
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incoming_call_hierarchy,
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matching_occurrences,
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outgoing_call_hierarchy,
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symbol_at_position,
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workspace_symbols,
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)
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@@ -629,6 +633,45 @@ def workspace_symbol(params: lsp.WorkspaceSymbolParams):
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return workspace_symbols(LSP_SERVER.navigation_snapshot(), params.query)
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@LSP_SERVER.feature(lsp.TEXT_DOCUMENT_PREPARE_CALL_HIERARCHY)
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def prepare_call_hierarchy(params: lsp.CallHierarchyPrepareParams):
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context = _navigation_context(params.text_document.uri, params.position)
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if context is None:
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return None
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indexes, _, _, identity = context
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items = call_hierarchy_items(identity, indexes)
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return items or None
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@LSP_SERVER.feature(lsp.CALL_HIERARCHY_INCOMING_CALLS)
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def incoming_calls(params: lsp.CallHierarchyIncomingCallsParams):
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identity = call_hierarchy_identity(params.item)
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if identity is None:
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return []
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indexes = LSP_SERVER.navigation_snapshot()
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return incoming_call_hierarchy(
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identity,
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indexes,
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definition_identities(indexes),
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)
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@LSP_SERVER.feature(lsp.CALL_HIERARCHY_OUTGOING_CALLS)
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def outgoing_calls(params: lsp.CallHierarchyOutgoingCallsParams):
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identity = call_hierarchy_identity(params.item)
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if identity is None:
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return []
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indexes = LSP_SERVER.navigation_snapshot()
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return outgoing_call_hierarchy(
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identity,
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indexes,
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definition_identities(indexes),
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)
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# **********************************************************
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# Linting features end here
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# **********************************************************
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@@ -704,6 +747,7 @@ def initialize(params: lsp.InitializeParams) -> lsp.InitializeResult:
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references_provider=True,
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rename_provider=lsp.RenameOptions(prepare_provider=True),
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workspace_symbol_provider=True,
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call_hierarchy_provider=True,
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)
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)
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@@ -1,10 +1,10 @@
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from __future__ import annotations
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from dataclasses import dataclass
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from pathlib import Path
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import lsprotocol.types as lsp
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from tclint.syntax_tree import BareWord, Command, List, Node, Script, VarSub
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from tclint.syntax_tree import Command, List, Node, Script, VarSub
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ROOT_NAMESPACE = "::"
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@@ -25,6 +25,8 @@ class SymbolOccurrence:
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symbol_kind: lsp.SymbolKind = lsp.SymbolKind.Variable
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container_name: str | None = None
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fallback_identity: SymbolIdentity | None = None
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caller: SymbolIdentity | None = None
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declaration_range: lsp.Range | None = None
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@dataclass(frozen=True)
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@@ -32,6 +34,7 @@ class FileSymbolIndex:
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path: str
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uri: str
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occurrences: tuple[SymbolOccurrence, ...]
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document_range: lsp.Range | None = None
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@dataclass(frozen=True)
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@@ -105,6 +108,18 @@ def _name_range(node: Node, raw_name: str, *, variable_sub: bool = False) -> lsp
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)
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def _node_range(node: Node) -> lsp.Range | None:
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if node.pos is None or node.end_pos is None:
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return None
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return lsp.Range(
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start=lsp.Position(line=node.pos[0] - 1, character=node.pos[1] - 1),
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end=lsp.Position(
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line=node.end_pos[0] - 1,
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character=node.end_pos[1] - 1,
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),
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)
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def _proc_identity(raw_name: str, namespace: str) -> SymbolIdentity:
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return SymbolIdentity(kind="proc", name=_qualify(raw_name, namespace))
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@@ -251,8 +266,16 @@ def build_file_symbol_index(
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scope: _Scope,
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*,
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is_definition: bool,
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declaration_range: lsp.Range | None = None,
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) -> None:
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identity = _proc_identity(raw_name, scope.namespace)
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caller = None
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if not is_definition:
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caller = (
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SymbolIdentity(kind="proc", name=scope.proc_name)
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if scope.proc_name is not None
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else SymbolIdentity(kind="file", name=filepath)
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)
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occurrences.append(
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SymbolOccurrence(
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identity=identity,
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@@ -266,6 +289,8 @@ def build_file_symbol_index(
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is_definition=is_definition,
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symbol_kind=lsp.SymbolKind.Function,
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container_name=_container_name(identity),
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caller=caller,
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declaration_range=declaration_range,
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)
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)
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@@ -319,7 +344,13 @@ def build_file_symbol_index(
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if raw_name is None or not isinstance(body, Script):
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return
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add_proc(command.args[0], raw_name, scope, is_definition=True)
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add_proc(
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command.args[0],
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raw_name,
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scope,
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is_definition=True,
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declaration_range=_node_range(command),
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)
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proc_identity = _proc_identity(raw_name, scope.namespace)
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proc_namespace = _namespace_of(proc_identity.name)
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global_variables, namespace_variables = _scan_proc_imports(
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@@ -435,7 +466,12 @@ def build_file_symbol_index(
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walk_embedded(child, scope)
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walk_script(tree, _Scope(filepath=filepath))
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return FileSymbolIndex(path=filepath, uri=uri, occurrences=tuple(occurrences))
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return FileSymbolIndex(
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path=filepath,
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uri=uri,
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occurrences=tuple(occurrences),
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document_range=_node_range(tree),
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)
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def definition_identities(indexes: dict[str, FileSymbolIndex]) -> set[SymbolIdentity]:
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@@ -517,3 +553,215 @@ def workspace_symbols(
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)
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)
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return sorted(results, key=lambda symbol: symbol.name.casefold())
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_CALL_HIERARCHY_DATA_KIND = "nx-post-support.call-hierarchy"
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def _call_hierarchy_data(identity: SymbolIdentity) -> dict[str, str]:
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return {
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"source": _CALL_HIERARCHY_DATA_KIND,
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"kind": identity.kind,
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"name": identity.name,
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}
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def call_hierarchy_identity(item: lsp.CallHierarchyItem) -> SymbolIdentity | None:
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"""Restore the symbol identity carried by a call hierarchy item."""
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data = item.data
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if (
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not isinstance(data, dict)
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or data.get("source") != _CALL_HIERARCHY_DATA_KIND
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):
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return None
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kind = data.get("kind")
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name = data.get("name")
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if kind not in {"proc", "file"} or not isinstance(name, str):
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return None
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return SymbolIdentity(kind=kind, name=name)
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def _proc_definitions(
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indexes: dict[str, FileSymbolIndex],
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) -> dict[SymbolIdentity, list[tuple[FileSymbolIndex, SymbolOccurrence]]]:
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definitions: dict[
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SymbolIdentity, list[tuple[FileSymbolIndex, SymbolOccurrence]]
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] = {}
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for index in indexes.values():
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for occurrence in index.occurrences:
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if occurrence.is_definition and occurrence.identity.kind == "proc":
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definitions.setdefault(occurrence.identity, []).append(
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(index, occurrence)
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)
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return definitions
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def _unique_proc_definition(
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identity: SymbolIdentity,
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proc_definitions: dict[
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SymbolIdentity, list[tuple[FileSymbolIndex, SymbolOccurrence]]
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],
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) -> tuple[FileSymbolIndex, SymbolOccurrence] | None:
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matches = proc_definitions.get(identity, [])
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if len(matches) != 1:
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return None
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return matches[0]
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def _file_item(
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identity: SymbolIdentity,
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indexes: dict[str, FileSymbolIndex],
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) -> lsp.CallHierarchyItem | None:
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if identity.kind != "file":
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return None
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index = indexes.get(identity.name)
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if index is None:
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return None
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range_ = index.document_range or lsp.Range(
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start=lsp.Position(line=0, character=0),
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end=lsp.Position(line=0, character=0),
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)
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selection_range = lsp.Range(start=range_.start, end=range_.start)
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return lsp.CallHierarchyItem(
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name=Path(index.path).name,
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kind=lsp.SymbolKind.File,
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uri=index.uri,
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range=range_,
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selection_range=selection_range,
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detail=str(Path(index.path).parent),
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data=_call_hierarchy_data(identity),
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)
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def _call_hierarchy_item(
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identity: SymbolIdentity,
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indexes: dict[str, FileSymbolIndex],
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proc_definitions: dict[
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SymbolIdentity, list[tuple[FileSymbolIndex, SymbolOccurrence]]
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],
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) -> lsp.CallHierarchyItem | None:
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if identity.kind == "file":
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return _file_item(identity, indexes)
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definition = _unique_proc_definition(identity, proc_definitions)
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if definition is None:
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return None
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index, occurrence = definition
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basename = _basename(identity.name)
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symbol_kind = (
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lsp.SymbolKind.Event
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if basename.startswith("MOM_")
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else lsp.SymbolKind.Function
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)
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return lsp.CallHierarchyItem(
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name=_display_name(identity),
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kind=symbol_kind,
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uri=index.uri,
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range=occurrence.declaration_range or occurrence.range,
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selection_range=occurrence.range,
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detail=Path(index.path).name,
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data=_call_hierarchy_data(identity),
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)
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def call_hierarchy_items(
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identity: SymbolIdentity,
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indexes: dict[str, FileSymbolIndex],
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) -> list[lsp.CallHierarchyItem]:
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"""Build the hierarchy item for one unambiguous workspace procedure."""
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item = _call_hierarchy_item(identity, indexes, _proc_definitions(indexes))
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return [item] if item is not None else []
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def _range_key(range_: lsp.Range) -> tuple[int, int, int, int]:
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return (
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range_.start.line,
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range_.start.character,
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range_.end.line,
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range_.end.character,
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)
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def _item_key(item: lsp.CallHierarchyItem) -> tuple[str, str, int, int]:
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return (
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item.name.casefold(),
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item.uri,
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item.selection_range.start.line,
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item.selection_range.start.character,
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)
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def incoming_call_hierarchy(
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identity: SymbolIdentity,
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indexes: dict[str, FileSymbolIndex],
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definitions: set[SymbolIdentity],
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) -> list[lsp.CallHierarchyIncomingCall]:
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"""Return statically resolved workspace procedures that call ``identity``."""
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proc_definitions = _proc_definitions(indexes)
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if _unique_proc_definition(identity, proc_definitions) is None:
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return []
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grouped: dict[SymbolIdentity, list[lsp.Range]] = {}
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for _, occurrence in matching_occurrences(identity, indexes, definitions):
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if occurrence.is_definition or occurrence.caller is None:
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continue
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caller = occurrence.caller
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if caller.kind == "proc" and (
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_unique_proc_definition(caller, proc_definitions) is None
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):
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continue
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grouped.setdefault(caller, []).append(occurrence.range)
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results = []
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for caller, ranges in grouped.items():
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item = _call_hierarchy_item(caller, indexes, proc_definitions)
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if item is not None:
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results.append(
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lsp.CallHierarchyIncomingCall(
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from_=item,
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from_ranges=sorted(ranges, key=_range_key),
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)
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)
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return sorted(results, key=lambda call: _item_key(call.from_))
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def outgoing_call_hierarchy(
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identity: SymbolIdentity,
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indexes: dict[str, FileSymbolIndex],
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definitions: set[SymbolIdentity],
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) -> list[lsp.CallHierarchyOutgoingCall]:
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"""Return statically resolved workspace procedures called by ``identity``."""
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proc_definitions = _proc_definitions(indexes)
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if identity.kind == "proc":
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if _unique_proc_definition(identity, proc_definitions) is None:
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return []
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elif identity.kind == "file":
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if identity.name not in indexes:
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return []
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else:
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return []
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grouped: dict[SymbolIdentity, list[lsp.Range]] = {}
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for index in indexes.values():
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for occurrence in index.occurrences:
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if occurrence.is_definition or occurrence.caller != identity:
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continue
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callee = resolve_identity(occurrence, definitions)
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if _unique_proc_definition(callee, proc_definitions) is None:
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continue
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grouped.setdefault(callee, []).append(occurrence.range)
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results = []
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for callee, ranges in grouped.items():
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item = _call_hierarchy_item(callee, indexes, proc_definitions)
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if item is not None:
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results.append(
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lsp.CallHierarchyOutgoingCall(
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to=item,
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from_ranges=sorted(ranges, key=_range_key),
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)
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)
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return sorted(results, key=lambda call: _item_key(call.to))
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