wip: add structures to hold filtered stack graphs

Author: oppiliappan

stack-graphs/Cargo.toml

@@ -29,7 +29,7 @@ fxhash = "0.2"
 itertools = "0.10"
 libc = "0.2"
 lsp-positions = { version="0.3", path="../lsp-positions" }
-serde = { version="1.0", optional=true }
+serde = { version="1.0", optional=true, features = ["derive"] }
 serde_json = { version="1.0", optional=true }
 smallvec = { version="1.6", features=["union"] }
 thiserror = { version="1.0" }

stack-graphs/src/filtered_stack_graph.rs

@@ -0,0 +1,60 @@
+use serde::Deserialize;
+use serde::Serialize;
+
+pub struct FilteredStackGraph {
+    files: FilteredFiles,
+    nodes: FilteredNodes,
+    // edges: FilteredEdges,
+}
+
+#[derive(Serialize, Deserialize)]
+#[serde(transparent)]
+pub struct FilteredFiles {
+    data: Vec<String>,
+}
+
+#[derive(Serialize, Deserialize)]
+#[serde(transparent)]
+pub struct FilteredNodes {
+    data: Vec<FilteredNode>,
+}
+
+#[derive(Serialize, Deserialize)]
+#[serde(tag = "type")]
+pub enum FilteredNode {
+    #[serde(rename = "drop_scopes")]
+    DropScopes(FilteredDropScopesNode),
+    // #[serde(rename = "jump_to")]
+    // JumpTo(FilteredJumpToNode),
+
+    // #[serde(rename = "pop_scoped_symbol")]
+    // PopScopedSymbol(FilteredPopScopedSymbolNode),
+
+    // #[serde(rename = "pop_symbol")]
+    // PopSymbol(FilteredPopSymbolNode),
+
+    // #[serde(rename = "push_scoped_symbol")]
+    // PushScopedSymbol(FilteredPushScopedSymbolNode),
+
+    // #[serde(rename = "push_symbol")]
+    // PushSymbol(FilteredPushSymbolNode),
+
+    // #[serde(rename = "root")]
+    // Root(FilteredRootNode),
+
+    // #[serde(rename = "scope")]
+    // Scope(FilteredScopeNode),
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct FilteredNodeID {
+    file: String,
+    local_id: u32,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct FilteredDropScopesNode {
+    id: FilteredNodeID,
+    // source_info: FilteredSourceInfo
+    // debug_info: FilteredDebugInfo
+}

stack-graphs/src/json.rs

@@ -37,6 +37,9 @@ use crate::partial::ScopeStackVariable;
 use crate::partial::SymbolStackVariable;
 use crate::stitching::Database;
 
+#[path = "filtered_stack_graph.rs"]
+mod filtered_stack_graph;
+
 #[derive(Debug, Error)]
 #[error(transparent)]
 pub struct JsonError(#[from] serde_json::error::Error);