From 3a9e1c305b1ab080e77a2d6a405710fd1f20015e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bla=C5=BE=20Hrastnik?= <blaz@mxxn.io>
Date: Mon, 16 Aug 2021 13:37:50 +0900
Subject: [PATCH] Refactor types, add a Request trait

---
 helix-dap/src/client.rs |  28 +-
 helix-dap/src/lib.rs    |   2 +-
 helix-dap/src/types.rs  | 716 ++++++++++++++++++++++------------------
 3 files changed, 407 insertions(+), 339 deletions(-)

diff --git a/helix-dap/src/client.rs b/helix-dap/src/client.rs
index a0133d7d..5046159c 100644
--- a/helix-dap/src/client.rs
+++ b/helix-dap/src/client.rs
@@ -3,8 +3,8 @@ use crate::{
     types::*,
     Result,
 };
-use log::{error, info};
-use serde::{Deserialize, Serialize};
+pub use log::{error, info};
+use serde::Serialize;
 use serde_json::{from_value, to_value, Value};
 use std::{
     collections::HashMap,
@@ -208,7 +208,7 @@ impl Client {
     }
 
     pub async fn initialize(&mut self, adapter_id: String) -> Result<()> {
-        let args = InitializeArguments {
+        let args = requests::InitializeArguments {
             client_id: Some("hx".to_owned()),
             client_name: Some("helix".to_owned()),
             adapter_id,
@@ -262,7 +262,7 @@ impl Client {
         file: String,
         breakpoints: Vec<SourceBreakpoint>,
     ) -> Result<Option<Vec<Breakpoint>>> {
-        let args = SetBreakpointsArguments {
+        let args = requests::SetBreakpointsArguments {
             source: Source {
                 path: Some(file),
                 name: None,
@@ -280,7 +280,7 @@ impl Client {
         let response = self
             .request("setBreakpoints".to_owned(), to_value(args).ok())
             .await?;
-        let body: Option<SetBreakpointsResponseBody> = from_value(response.body.unwrap()).ok();
+        let body: Option<requests::SetBreakpointsResponse> = from_value(response.body.unwrap()).ok();
 
         Ok(body.map(|b| b.breakpoints).unwrap())
     }
@@ -291,13 +291,13 @@ impl Client {
     }
 
     pub async fn continue_thread(&mut self, thread_id: usize) -> Result<Option<bool>> {
-        let args = ContinueArguments { thread_id };
+        let args = requests::ContinueArguments { thread_id };
 
         let response = self
             .request("continue".to_owned(), to_value(args).ok())
             .await?;
 
-        let body: Option<ContinueResponseBody> = from_value(response.body.unwrap()).ok();
+        let body: Option<requests::ContinueResponse> = from_value(response.body.unwrap()).ok();
 
         Ok(body.map(|b| b.all_threads_continued).unwrap())
     }
@@ -306,7 +306,7 @@ impl Client {
         &mut self,
         thread_id: usize,
     ) -> Result<(Vec<StackFrame>, Option<usize>)> {
-        let args = StackTraceArguments {
+        let args = requests::StackTraceArguments {
             thread_id,
             start_frame: None,
             levels: None,
@@ -317,7 +317,7 @@ impl Client {
             .request("stackTrace".to_owned(), to_value(args).ok())
             .await?;
 
-        let body: StackTraceResponseBody = from_value(response.body.unwrap()).unwrap();
+        let body: requests::StackTraceResponse = from_value(response.body.unwrap()).unwrap();
 
         Ok((body.stack_frames, body.total_frames))
     }
@@ -325,25 +325,25 @@ impl Client {
     pub async fn threads(&mut self) -> Result<Vec<Thread>> {
         let response = self.request("threads".to_owned(), None).await?;
 
-        let body: ThreadsResponseBody = from_value(response.body.unwrap()).unwrap();
+        let body: requests::ThreadsResponse = from_value(response.body.unwrap()).unwrap();
 
         Ok(body.threads)
     }
 
     pub async fn scopes(&mut self, frame_id: usize) -> Result<Vec<Scope>> {
-        let args = ScopesArguments { frame_id };
+        let args = requests::ScopesArguments { frame_id };
 
         let response = self
             .request("scopes".to_owned(), to_value(args).ok())
             .await?;
 
-        let body: ScopesResponseBody = from_value(response.body.unwrap()).unwrap();
+        let body: requests::ScopesResponse = from_value(response.body.unwrap()).unwrap();
 
         Ok(body.scopes)
     }
 
     pub async fn variables(&mut self, variables_reference: usize) -> Result<Vec<Variable>> {
-        let args = VariablesArguments {
+        let args = requests::VariablesArguments {
             variables_reference,
             filter: None,
             start: None,
@@ -355,7 +355,7 @@ impl Client {
             .request("variables".to_owned(), to_value(args).ok())
             .await?;
 
-        let body: VariablesResponseBody = from_value(response.body.unwrap()).unwrap();
+        let body: requests::VariablesResponse = from_value(response.body.unwrap()).unwrap();
 
         Ok(body.variables)
     }
diff --git a/helix-dap/src/lib.rs b/helix-dap/src/lib.rs
index 04d9ba8b..64cc87cc 100644
--- a/helix-dap/src/lib.rs
+++ b/helix-dap/src/lib.rs
@@ -3,7 +3,7 @@ mod transport;
 mod types;
 
 pub use client::Client;
-pub use transport::{Event, Payload, Request, Response, Transport};
+pub use transport::{Event, Payload, Response, Transport};
 pub use types::*;
 
 use thiserror::Error;
diff --git a/helix-dap/src/types.rs b/helix-dap/src/types.rs
index 6b2d4975..3f7e3c43 100644
--- a/helix-dap/src/types.rs
+++ b/helix-dap/src/types.rs
@@ -1,324 +1,392 @@
-use serde::{Deserialize, Serialize};
-use serde_json::Value;
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ColumnDescriptor {
-    pub attribute_name: String,
-    pub label: String,
-    pub format: Option<String>,
-    #[serde(rename = "type")]
-    pub col_type: Option<String>,
-    pub width: Option<usize>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ExceptionBreakpointsFilter {
-    pub filter: String,
-    pub label: String,
-    pub description: Option<String>,
-    pub default: Option<bool>,
-    pub supports_condition: Option<bool>,
-    pub condition_description: Option<String>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct DebuggerCapabilities {
-    pub supports_configuration_done_request: Option<bool>,
-    pub supports_function_breakpoints: Option<bool>,
-    pub supports_conditional_breakpoints: Option<bool>,
-    pub supports_hit_conditional_breakpoints: Option<bool>,
-    pub supports_evaluate_for_hovers: Option<bool>,
-    pub supports_step_back: Option<bool>,
-    pub supports_set_variable: Option<bool>,
-    pub supports_restart_frame: Option<bool>,
-    pub supports_goto_targets_request: Option<bool>,
-    pub supports_step_in_targets_request: Option<bool>,
-    pub supports_completions_request: Option<bool>,
-    pub supports_modules_request: Option<bool>,
-    pub supports_restart_request: Option<bool>,
-    pub supports_exception_options: Option<bool>,
-    pub supports_value_formatting_options: Option<bool>,
-    pub supports_exception_info_request: Option<bool>,
-    pub support_terminate_debuggee: Option<bool>,
-    pub support_suspend_debuggee: Option<bool>,
-    pub supports_delayed_stack_trace_loading: Option<bool>,
-    pub supports_loaded_sources_request: Option<bool>,
-    pub supports_log_points: Option<bool>,
-    pub supports_terminate_threads_request: Option<bool>,
-    pub supports_set_expression: Option<bool>,
-    pub supports_terminate_request: Option<bool>,
-    pub supports_data_breakpoints: Option<bool>,
-    pub supports_read_memory_request: Option<bool>,
-    pub supports_write_memory_request: Option<bool>,
-    pub supports_disassemble_request: Option<bool>,
-    pub supports_cancel_request: Option<bool>,
-    pub supports_breakpoint_locations_request: Option<bool>,
-    pub supports_clipboard_context: Option<bool>,
-    pub supports_stepping_granularity: Option<bool>,
-    pub supports_instruction_breakpoints: Option<bool>,
-    pub supports_exception_filter_options: Option<bool>,
-    pub exception_breakpoint_filters: Option<Vec<ExceptionBreakpointsFilter>>,
-    pub completion_trigger_characters: Option<Vec<String>>,
-    pub additional_module_columns: Option<Vec<ColumnDescriptor>>,
-    pub supported_checksum_algorithms: Option<Vec<String>>,
-}
-
-impl std::ops::Deref for DebuggerCapabilities {
-    type Target = Option<bool>;
-
-    fn deref(&self) -> &Self::Target {
-        &self.supports_exception_options
-    }
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct InitializeArguments {
-    #[serde(rename = "clientID")]
-    pub client_id: Option<String>,
-    pub client_name: Option<String>,
-    #[serde(rename = "adapterID")]
-    pub adapter_id: String,
-    pub locale: Option<String>,
-    #[serde(rename = "linesStartAt1")]
-    pub lines_start_at_one: Option<bool>,
-    #[serde(rename = "columnsStartAt1")]
-    pub columns_start_at_one: Option<bool>,
-    pub path_format: Option<String>,
-    pub supports_variable_type: Option<bool>,
-    pub supports_variable_paging: Option<bool>,
-    pub supports_run_in_terminal_request: Option<bool>,
-    pub supports_memory_references: Option<bool>,
-    pub supports_progress_reporting: Option<bool>,
-    pub supports_invalidated_event: Option<bool>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct Checksum {
-    pub algorithm: String,
-    pub checksum: String,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct Source {
-    pub name: Option<String>,
-    pub path: Option<String>,
-    pub source_reference: Option<usize>,
-    pub presentation_hint: Option<String>,
-    pub origin: Option<String>,
-    pub sources: Option<Vec<Source>>,
-    pub adapter_data: Option<Value>,
-    pub checksums: Option<Vec<Checksum>>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct SourceBreakpoint {
-    pub line: usize,
-    pub column: Option<usize>,
-    pub condition: Option<String>,
-    pub hit_condition: Option<String>,
-    pub log_message: Option<String>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct SetBreakpointsArguments {
-    pub source: Source,
-    pub breakpoints: Option<Vec<SourceBreakpoint>>,
-    // lines is deprecated
-    pub source_modified: Option<bool>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct Breakpoint {
-    pub id: Option<usize>,
-    pub verified: bool,
-    pub message: Option<String>,
-    pub source: Option<Source>,
-    pub line: Option<usize>,
-    pub column: Option<usize>,
-    pub end_line: Option<usize>,
-    pub end_column: Option<usize>,
-    pub instruction_reference: Option<String>,
-    pub offset: Option<usize>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct SetBreakpointsResponseBody {
-    pub breakpoints: Option<Vec<Breakpoint>>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ContinueArguments {
-    pub thread_id: usize,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ContinueResponseBody {
-    pub all_threads_continued: Option<bool>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct StackFrameFormat {
-    pub parameters: Option<bool>,
-    pub parameter_types: Option<bool>,
-    pub parameter_names: Option<bool>,
-    pub parameter_values: Option<bool>,
-    pub line: Option<bool>,
-    pub module: Option<bool>,
-    pub include_all: Option<bool>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct StackTraceArguments {
-    pub thread_id: usize,
-    pub start_frame: Option<usize>,
-    pub levels: Option<usize>,
-    pub format: Option<StackFrameFormat>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct StackFrame {
-    pub id: usize,
-    pub name: String,
-    pub source: Option<Source>,
-    pub line: usize,
-    pub column: usize,
-    pub end_line: Option<usize>,
-    pub end_column: Option<usize>,
-    pub can_restart: Option<bool>,
-    pub instruction_pointer_reference: Option<String>,
-    pub module_id: Option<Value>,
-    pub presentation_hint: Option<String>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct StackTraceResponseBody {
-    pub total_frames: Option<usize>,
-    pub stack_frames: Vec<StackFrame>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct Thread {
-    pub id: usize,
-    pub name: String,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ThreadsResponseBody {
-    pub threads: Vec<Thread>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ScopesArguments {
-    pub frame_id: usize,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct Scope {
-    pub name: String,
-    pub presentation_hint: Option<String>,
-    pub variables_reference: usize,
-    pub named_variables: Option<usize>,
-    pub indexed_variables: Option<usize>,
-    pub expensive: bool,
-    pub source: Option<Source>,
-    pub line: Option<usize>,
-    pub column: Option<usize>,
-    pub end_line: Option<usize>,
-    pub end_column: Option<usize>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ScopesResponseBody {
-    pub scopes: Vec<Scope>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct ValueFormat {
-    pub hex: Option<bool>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct VariablesArguments {
-    pub variables_reference: usize,
-    pub filter: Option<String>,
-    pub start: Option<usize>,
-    pub count: Option<usize>,
-    pub format: Option<ValueFormat>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct VariablePresentationHint {
-    pub kind: Option<String>,
-    pub attributes: Option<Vec<String>>,
-    pub visibility: Option<String>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct Variable {
-    pub name: String,
-    pub value: String,
-    #[serde(rename = "type")]
-    pub data_type: Option<String>,
-    pub presentation_hint: Option<VariablePresentationHint>,
-    pub evaluate_name: Option<String>,
-    pub variables_reference: usize,
-    pub named_variables: Option<usize>,
-    pub indexed_variables: Option<usize>,
-    pub memory_reference: Option<String>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct VariablesResponseBody {
-    pub variables: Vec<Variable>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct OutputEventBody {
-    pub output: String,
-    pub category: Option<String>,
-    pub group: Option<String>,
-    pub line: Option<usize>,
-    pub column: Option<usize>,
-    pub variables_reference: Option<usize>,
-    pub source: Option<Source>,
-    pub data: Option<Value>,
-}
-
-#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct StoppedEventBody {
-    pub reason: String,
-    pub description: Option<String>,
-    pub thread_id: Option<usize>,
-    pub preserve_focus_hint: Option<bool>,
-    pub text: Option<String>,
-    pub all_threads_stopped: Option<bool>,
-    pub hit_breakpoint_ids: Option<Vec<usize>>,
-}
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+pub trait Request {
+    type Arguments: serde::de::DeserializeOwned + serde::Serialize;
+    type Result: serde::de::DeserializeOwned + serde::Serialize;
+    const COMMAND: &'static str;
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ColumnDescriptor {
+    pub attribute_name: String,
+    pub label: String,
+    pub format: Option<String>,
+    #[serde(rename = "type")]
+    pub col_type: Option<String>,
+    pub width: Option<usize>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ExceptionBreakpointsFilter {
+    pub filter: String,
+    pub label: String,
+    pub description: Option<String>,
+    pub default: Option<bool>,
+    pub supports_condition: Option<bool>,
+    pub condition_description: Option<String>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct DebuggerCapabilities {
+    pub supports_configuration_done_request: Option<bool>,
+    pub supports_function_breakpoints: Option<bool>,
+    pub supports_conditional_breakpoints: Option<bool>,
+    pub supports_hit_conditional_breakpoints: Option<bool>,
+    pub supports_evaluate_for_hovers: Option<bool>,
+    pub supports_step_back: Option<bool>,
+    pub supports_set_variable: Option<bool>,
+    pub supports_restart_frame: Option<bool>,
+    pub supports_goto_targets_request: Option<bool>,
+    pub supports_step_in_targets_request: Option<bool>,
+    pub supports_completions_request: Option<bool>,
+    pub supports_modules_request: Option<bool>,
+    pub supports_restart_request: Option<bool>,
+    pub supports_exception_options: Option<bool>,
+    pub supports_value_formatting_options: Option<bool>,
+    pub supports_exception_info_request: Option<bool>,
+    pub support_terminate_debuggee: Option<bool>,
+    pub support_suspend_debuggee: Option<bool>,
+    pub supports_delayed_stack_trace_loading: Option<bool>,
+    pub supports_loaded_sources_request: Option<bool>,
+    pub supports_log_points: Option<bool>,
+    pub supports_terminate_threads_request: Option<bool>,
+    pub supports_set_expression: Option<bool>,
+    pub supports_terminate_request: Option<bool>,
+    pub supports_data_breakpoints: Option<bool>,
+    pub supports_read_memory_request: Option<bool>,
+    pub supports_write_memory_request: Option<bool>,
+    pub supports_disassemble_request: Option<bool>,
+    pub supports_cancel_request: Option<bool>,
+    pub supports_breakpoint_locations_request: Option<bool>,
+    pub supports_clipboard_context: Option<bool>,
+    pub supports_stepping_granularity: Option<bool>,
+    pub supports_instruction_breakpoints: Option<bool>,
+    pub supports_exception_filter_options: Option<bool>,
+    pub exception_breakpoint_filters: Option<Vec<ExceptionBreakpointsFilter>>,
+    pub completion_trigger_characters: Option<Vec<String>>,
+    pub additional_module_columns: Option<Vec<ColumnDescriptor>>,
+    pub supported_checksum_algorithms: Option<Vec<String>>,
+}
+
+impl std::ops::Deref for DebuggerCapabilities {
+    type Target = Option<bool>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.supports_exception_options
+    }
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Checksum {
+    pub algorithm: String,
+    pub checksum: String,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Source {
+    pub name: Option<String>,
+    pub path: Option<String>,
+    pub source_reference: Option<usize>,
+    pub presentation_hint: Option<String>,
+    pub origin: Option<String>,
+    pub sources: Option<Vec<Source>>,
+    pub adapter_data: Option<Value>,
+    pub checksums: Option<Vec<Checksum>>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct SourceBreakpoint {
+    pub line: usize,
+    pub column: Option<usize>,
+    pub condition: Option<String>,
+    pub hit_condition: Option<String>,
+    pub log_message: Option<String>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Breakpoint {
+    pub id: Option<usize>,
+    pub verified: bool,
+    pub message: Option<String>,
+    pub source: Option<Source>,
+    pub line: Option<usize>,
+    pub column: Option<usize>,
+    pub end_line: Option<usize>,
+    pub end_column: Option<usize>,
+    pub instruction_reference: Option<String>,
+    pub offset: Option<usize>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct StackFrameFormat {
+    pub parameters: Option<bool>,
+    pub parameter_types: Option<bool>,
+    pub parameter_names: Option<bool>,
+    pub parameter_values: Option<bool>,
+    pub line: Option<bool>,
+    pub module: Option<bool>,
+    pub include_all: Option<bool>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct StackFrame {
+    pub id: usize,
+    pub name: String,
+    pub source: Option<Source>,
+    pub line: usize,
+    pub column: usize,
+    pub end_line: Option<usize>,
+    pub end_column: Option<usize>,
+    pub can_restart: Option<bool>,
+    pub instruction_pointer_reference: Option<String>,
+    pub module_id: Option<Value>,
+    pub presentation_hint: Option<String>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Thread {
+    pub id: usize,
+    pub name: String,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Scope {
+    pub name: String,
+    pub presentation_hint: Option<String>,
+    pub variables_reference: usize,
+    pub named_variables: Option<usize>,
+    pub indexed_variables: Option<usize>,
+    pub expensive: bool,
+    pub source: Option<Source>,
+    pub line: Option<usize>,
+    pub column: Option<usize>,
+    pub end_line: Option<usize>,
+    pub end_column: Option<usize>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ValueFormat {
+    pub hex: Option<bool>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct VariablePresentationHint {
+    pub kind: Option<String>,
+    pub attributes: Option<Vec<String>>,
+    pub visibility: Option<String>,
+}
+
+#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Variable {
+    pub name: String,
+    pub value: String,
+    #[serde(rename = "type")]
+    pub data_type: Option<String>,
+    pub presentation_hint: Option<VariablePresentationHint>,
+    pub evaluate_name: Option<String>,
+    pub variables_reference: usize,
+    pub named_variables: Option<usize>,
+    pub indexed_variables: Option<usize>,
+    pub memory_reference: Option<String>,
+}
+
+pub mod requests {
+    use super::*;
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct InitializeArguments {
+        #[serde(rename = "clientID")]
+        pub client_id: Option<String>,
+        pub client_name: Option<String>,
+        #[serde(rename = "adapterID")]
+        pub adapter_id: String,
+        pub locale: Option<String>,
+        #[serde(rename = "linesStartAt1")]
+        pub lines_start_at_one: Option<bool>,
+        #[serde(rename = "columnsStartAt1")]
+        pub columns_start_at_one: Option<bool>,
+        pub path_format: Option<String>,
+        pub supports_variable_type: Option<bool>,
+        pub supports_variable_paging: Option<bool>,
+        pub supports_run_in_terminal_request: Option<bool>,
+        pub supports_memory_references: Option<bool>,
+        pub supports_progress_reporting: Option<bool>,
+        pub supports_invalidated_event: Option<bool>,
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct SetBreakpointsArguments {
+        pub source: Source,
+        pub breakpoints: Option<Vec<SourceBreakpoint>>,
+        // lines is deprecated
+        pub source_modified: Option<bool>,
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct SetBreakpointsResponse {
+        pub breakpoints: Option<Vec<Breakpoint>>,
+    }
+
+    #[derive(Debug)]
+    pub enum SetBreakpoints {}
+
+    impl Request for SetBreakpoints {
+        type Arguments = SetBreakpointsArguments;
+        type Result = SetBreakpointsResponse;
+        const COMMAND: &'static str = "setBreakpoints";
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct ContinueArguments {
+        pub thread_id: usize,
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct ContinueResponse {
+        pub all_threads_continued: Option<bool>,
+    }
+
+    #[derive(Debug)]
+    pub enum Continue {}
+
+    impl Request for Continue {
+        type Arguments = ContinueArguments;
+        type Result = ContinueResponse;
+        const COMMAND: &'static str = "continue";
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct StackTraceArguments {
+        pub thread_id: usize,
+        pub start_frame: Option<usize>,
+        pub levels: Option<usize>,
+        pub format: Option<StackFrameFormat>,
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct StackTraceResponse {
+        pub total_frames: Option<usize>,
+        pub stack_frames: Vec<StackFrame>,
+    }
+
+    #[derive(Debug)]
+    pub enum StackTrace {}
+
+    impl Request for StackTrace {
+        type Arguments = StackTraceArguments;
+        type Result = StackTraceResponse;
+        const COMMAND: &'static str = "stackTrace";
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct ThreadsResponse {
+        pub threads: Vec<Thread>,
+    }
+
+    #[derive(Debug)]
+    pub enum Threads {}
+
+    impl Request for Threads {
+        type Arguments = ();
+        type Result = ThreadsResponse;
+        const COMMAND: &'static str = "threads";
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct ScopesArguments {
+        pub frame_id: usize,
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct ScopesResponse {
+        pub scopes: Vec<Scope>,
+    }
+
+    #[derive(Debug)]
+    pub enum Scopes {}
+
+    impl Request for Scopes {
+        type Arguments = ScopesArguments;
+        type Result = ScopesResponse;
+        const COMMAND: &'static str = "scopes";
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct VariablesArguments {
+        pub variables_reference: usize,
+        pub filter: Option<String>,
+        pub start: Option<usize>,
+        pub count: Option<usize>,
+        pub format: Option<ValueFormat>,
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct VariablesResponse {
+        pub variables: Vec<Variable>,
+    }
+
+    #[derive(Debug)]
+    pub enum Variables {}
+
+    impl Request for Variables {
+        type Arguments = VariablesArguments;
+        type Result = VariablesResponse;
+        const COMMAND: &'static str = "scopes";
+    }
+}
+
+// Events
+
+pub mod events {
+    use super::*;
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct Output {
+        pub output: String,
+        pub category: Option<String>,
+        pub group: Option<String>,
+        pub line: Option<usize>,
+        pub column: Option<usize>,
+        pub variables_reference: Option<usize>,
+        pub source: Option<Source>,
+        pub data: Option<Value>,
+    }
+
+    #[derive(Debug, PartialEq, Clone, Deserialize, Serialize)]
+    #[serde(rename_all = "camelCase")]
+    pub struct Stopped {
+        pub reason: String,
+        pub description: Option<String>,
+        pub thread_id: Option<usize>,
+        pub preserve_focus_hint: Option<bool>,
+        pub text: Option<String>,
+        pub all_threads_stopped: Option<bool>,
+        pub hit_breakpoint_ids: Option<Vec<usize>>,
+    }
+}