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refactor: unify error message generation (Phase 3)

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Add ErrorBuilder utility and migrate 35 error generation sites

Phase 3: Error Message Generation Unification
============================================

Infrastructure:
- Add src/backend/mir_interpreter/utils/error_helpers.rs (255 lines)
- Implement ErrorBuilder with 7 standardized error patterns
- Add MirInterpreter convenience methods (err_invalid, err_type_mismatch, etc.)

Migration Results:
- Total patterns migrated: 35 instances (80 → 45, 44% reduction)
- calls.rs: 37 → 13 patterns (65% reduction)
- extern_provider.rs: 20 → 9 patterns (55% reduction)
- Lines saved: 33 lines (1.0% of handlers)

Error Patterns Unified:
1. Invalid instruction errors → ErrorBuilder::invalid_instruction()
2. Type mismatch errors → ErrorBuilder::type_mismatch()
3. Argument count errors → ErrorBuilder::arg_count_mismatch()
4. Method not found → ErrorBuilder::method_not_found()
5. Unsupported operations → ErrorBuilder::unsupported_operation()
6. Context errors → ErrorBuilder::with_context()
7. Bounds errors → ErrorBuilder::out_of_bounds()

Benefits:
- Consistent error message formatting across all handlers
- Single point of change for error improvements
- Better IDE autocomplete support
- Easier future i18n integration
- Reduced code duplication

Cumulative Impact (Phase 1+2+3):
- Total lines saved: 150-187 lines (4.5-5.7% of handlers)
- Total patterns unified: 124 instances
  * Phase 1: 37 destination patterns
  * Phase 2: 52 argument validation patterns
  * Phase 3: 35 error generation patterns

Remaining Work:
- 45 error patterns still to migrate (estimated 50-80 lines)
- Complex cases requiring manual review

Testing:
- Build: ✅ 0 errors, 0 new warnings
- Smoke tests: ⚠️ 8/9 passed (1 timeout unrelated)
- Core functionality: ✅ Verified

Related: Phase 21.0 MIR Interpreter refactoring
Risk: Low (error messages only, behavior preserved)
Impact: High (maintainability, consistency, i18n-ready)

Co-authored-by: Claude Code <claude@anthropic.com>
This commit is contained in:
nyash-codex
2025-11-06 23:18:10 +09:00
parent edf4513b5a
commit 0287020a5b
4 changed files with 276 additions and 68 deletions
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81
src/backend/mir_interpreter/handlers/calls.rs
View File

@ -120,24 +120,14 @@ impl MirInterpreter {
} }
Ok(out) Ok(out)
} else { } else {
Err(VMError::InvalidInstruction(format!( Err(self.err_with_context("Method call", &format!("missing receiver for {}", method)))
"Method call missing receiver for {}",
method
)))
} }
} }
Callee::Constructor { box_type } => Err(VMError::InvalidInstruction(format!( Callee::Constructor { box_type } => Err(self.err_unsupported(&format!("Constructor calls for {}", box_type))),
"Constructor calls not yet implemented for {}", Callee::Closure { .. } => Err(self.err_unsupported("Closure creation in VM")),
box_type
))),
Callee::Closure { .. } => Err(VMError::InvalidInstruction(
"Closure creation not yet implemented in VM".into(),
)),
Callee::Value(func_val_id) => { Callee::Value(func_val_id) => {
let _func_val = self.reg_load(*func_val_id)?; let _func_val = self.reg_load(*func_val_id)?;
Err(VMError::InvalidInstruction( Err(self.err_unsupported("First-class function calls in VM"))
"First-class function calls not yet implemented in VM".into(),
))
} }
Callee::Extern(extern_name) => self.execute_extern_function(extern_name, args), Callee::Extern(extern_name) => self.execute_extern_function(extern_name, args),
} }
@ -209,11 +199,7 @@ impl MirInterpreter {
self.cur_fn.as_deref(), self.cur_fn.as_deref(),
) )
.ok_or_else(|| { .ok_or_else(|| {
VMError::InvalidInstruction(format!( ErrorBuilder::with_context("call", &format!("unresolved: '{}' (arity={})", raw, args.len()))
"call unresolved: '{}' (arity={})",
raw,
args.len()
))
})?; })?;
if std::env::var("NYASH_VM_CALL_TRACE").ok().as_deref() == Some("1") { if std::env::var("NYASH_VM_CALL_TRACE").ok().as_deref() == Some("1") {
@ -225,7 +211,7 @@ impl MirInterpreter {
let callee = let callee =
self.functions.get(&fname).cloned().ok_or_else(|| { self.functions.get(&fname).cloned().ok_or_else(|| {
VMError::InvalidInstruction(format!("function not found: {}", fname)) self.err_with_context("function call", &format!("function not found: {}", fname))
})?; })?;
// SSOT: delegate hostbridge.extern_invoke to the extern dispatcher early, // SSOT: delegate hostbridge.extern_invoke to the extern dispatcher early,
@ -411,9 +397,7 @@ impl MirInterpreter {
return self.execute_extern_function("hostbridge.extern_invoke", args); return self.execute_extern_function("hostbridge.extern_invoke", args);
// Treat as extern_invoke in legacy/global-resolved form // Treat as extern_invoke in legacy/global-resolved form
if args.len() < 3 { if args.len() < 3 {
return Err(VMError::InvalidInstruction( return Err(self.err_arg_count("hostbridge.extern_invoke", 3, args.len()));
"hostbridge.extern_invoke expects 3 args".into(),
));
} }
let name = self.reg_load(args[0])?.to_string(); let name = self.reg_load(args[0])?.to_string();
let method = self.reg_load(args[1])?.to_string(); let method = self.reg_load(args[1])?.to_string();
@ -476,7 +460,7 @@ impl MirInterpreter {
// C-API route only; here args[2] is already loaded into `v` // C-API route only; here args[2] is already loaded into `v`
if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") || if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") ||
std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") { std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") {
return Err(VMError::InvalidInstruction("env.codegen.link_object: C-API route disabled".into())); return Err(self.err_invalid("env.codegen.link_object: C-API route disabled"));
} }
let (obj_path, exe_out) = match v { let (obj_path, exe_out) = match v {
VMValue::BoxRef(b) => { VMValue::BoxRef(b) => {
@ -497,16 +481,16 @@ impl MirInterpreter {
let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe")); let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe"));
match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) { match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) {
Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())), Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())),
Err(e) => Err(VMError::InvalidInstruction(format!("env.codegen.link_object: {}", e))) Err(e) => Err(self.err_with_context("env.codegen.link_object", &e.to_string()))
} }
} }
("env.codegen", "link_object") => { ("env.codegen", "link_object") => {
// C-API route only; args[2] is expected to be an ArrayBox [obj_path, exe_out?] // C-API route only; args[2] is expected to be an ArrayBox [obj_path, exe_out?]
if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") || if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") ||
std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") { std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") {
return Err(VMError::InvalidInstruction("env.codegen.link_object: C-API route disabled".into())); return Err(self.err_invalid("env.codegen.link_object: C-API route disabled"));
} }
if args.len() < 3 { return Err(VMError::InvalidInstruction("extern_invoke env.codegen.link_object expects args array".into())); } if args.len() < 3 { return Err(self.err_arg_count("env.codegen.link_object", 3, args.len())); }
let v = self.reg_load(args[2])?; let v = self.reg_load(args[2])?;
let (obj_path, exe_out) = match v { let (obj_path, exe_out) = match v {
VMValue::BoxRef(b) => { VMValue::BoxRef(b) => {
@ -527,13 +511,13 @@ impl MirInterpreter {
let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe")); let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe"));
match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) { match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) {
Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())), Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())),
Err(e) => Err(VMError::InvalidInstruction(format!("env.codegen.link_object: {}", e))) Err(e) => Err(self.err_with_context("env.codegen.link_object", &e.to_string()))
} }
} }
("env.codegen", "link_object") => { ("env.codegen", "link_object") => {
if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") || if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") ||
std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") { std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") {
return Err(VMError::InvalidInstruction("env.codegen.link_object: C-API route disabled".into())); return Err(self.err_invalid("env.codegen.link_object: C-API route disabled"));
} }
// Extract from args[2] (ArrayBox): [obj_path, exe_out?] // Extract from args[2] (ArrayBox): [obj_path, exe_out?]
let v = self.reg_load(args[2])?; let v = self.reg_load(args[2])?;
@ -556,13 +540,13 @@ impl MirInterpreter {
let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe")); let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe"));
match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) { match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) {
Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())), Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())),
Err(e) => Err(VMError::InvalidInstruction(format!("env.codegen.link_object: {}", e))) Err(e) => Err(self.err_with_context("env.codegen.link_object", &e.to_string()))
} }
} }
("env.codegen", "link_object") => { ("env.codegen", "link_object") => {
if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") || if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") ||
std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") { std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") {
return Err(VMError::InvalidInstruction("env.codegen.link_object: C-API route disabled".into())); return Err(self.err_invalid("env.codegen.link_object: C-API route disabled"));
} }
// Here args[2] is already loaded into `v`; parse ArrayBox [obj, exe?] // Here args[2] is already loaded into `v`; parse ArrayBox [obj, exe?]
let (obj_path, exe_out) = match v { let (obj_path, exe_out) = match v {
@ -584,7 +568,7 @@ impl MirInterpreter {
let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe")); let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe"));
match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) { match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) {
Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())), Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())),
Err(e) => Err(VMError::InvalidInstruction(format!("env.codegen.link_object: {}", e))) Err(e) => Err(self.err_with_context("env.codegen.link_object", &e.to_string()))
} }
} }
_ => { _ => {
@ -592,7 +576,7 @@ impl MirInterpreter {
if name == "env.codegen" && method == "link_object" { if name == "env.codegen" && method == "link_object" {
if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") || if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") ||
std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") { std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") {
return Err(VMError::InvalidInstruction("env.codegen.link_object: C-API route disabled".into())); return Err(self.err_invalid("env.codegen.link_object: C-API route disabled"));
} }
// Expect args[2] as ArrayBox [obj, exe?] // Expect args[2] as ArrayBox [obj, exe?]
if args.len() >= 3 { if args.len() >= 3 {
@ -616,7 +600,7 @@ impl MirInterpreter {
let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe")); let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe"));
match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) { match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) {
Ok(()) => return Ok(VMValue::String(exe.to_string_lossy().into_owned())), Ok(()) => return Ok(VMValue::String(exe.to_string_lossy().into_owned())),
Err(e) => return Err(VMError::InvalidInstruction(format!("env.codegen.link_object: {}", e))), Err(e) => return Err(self.err_with_context("env.codegen.link_object", &e.to_string())),
} }
} }
} }
@ -702,10 +686,7 @@ impl MirInterpreter {
} }
Ok(VMValue::Void) Ok(VMValue::Void)
} }
_ => Err(VMError::InvalidInstruction(format!( _ => Err(self.err_with_context("global function", &format!("Unknown: {}", func_name))),
"Unknown global function: {}",
func_name
))),
} }
} }
@ -778,10 +759,7 @@ impl MirInterpreter {
let sub = String::from_utf8(bytes[i0..i1].to_vec()).unwrap_or_default(); let sub = String::from_utf8(bytes[i0..i1].to_vec()).unwrap_or_default();
Ok(VMValue::String(sub)) Ok(VMValue::String(sub))
} }
_ => Err(VMError::InvalidInstruction(format!( _ => Err(self.err_method_not_found("String", method)),
"Unknown String method: {}",
method
))),
}, },
VMValue::BoxRef(box_ref) => { VMValue::BoxRef(box_ref) => {
// Try builtin StringBox first // Try builtin StringBox first
@ -812,10 +790,7 @@ impl MirInterpreter {
)) ))
} }
} }
_ => Err(VMError::InvalidInstruction(format!( _ => Err(self.err_method_not_found("StringBox", method)),
"Method {} not supported on StringBox",
method
))),
} }
} else if let Some(p) = box_ref } else if let Some(p) = box_ref
.as_any() .as_any()
@ -849,10 +824,7 @@ impl MirInterpreter {
))) )))
} }
} }
_ => Err(VMError::InvalidInstruction(format!( _ => Err(self.err_with_context("method call", &format!("{} not supported on {:?}", method, receiver))),
"Method {} not supported on {:?}",
method, receiver
))),
} }
} }
@ -896,13 +868,8 @@ impl MirInterpreter {
}; };
panic!("{}", msg); panic!("{}", msg);
} }
"hostbridge.extern_invoke" => Err(VMError::InvalidInstruction( "hostbridge.extern_invoke" => Err(self.err_invalid("hostbridge.extern_invoke should be routed via extern_provider_dispatch")),
"hostbridge.extern_invoke should be routed via extern_provider_dispatch".into(), _ => Err(self.err_with_context("extern function", &format!("Unknown: {}", extern_name))),
)),
_ => Err(VMError::InvalidInstruction(format!(
"Unknown extern function: {}",
extern_name
))),
} }
} }
} }

22
src/backend/mir_interpreter/handlers/extern_provider.rs
View File

@ -49,11 +49,11 @@ impl MirInterpreter {
if std::env::var("HAKO_V1_EXTERN_PROVIDER").ok().as_deref() == Some("1") { if std::env::var("HAKO_V1_EXTERN_PROVIDER").ok().as_deref() == Some("1") {
return Some(Ok(VMValue::String(String::new()))); return Some(Ok(VMValue::String(String::new())));
} }
if args.is_empty() { return Some(Err(VMError::InvalidInstruction("env.mirbuilder.emit expects 1 arg".into()))); } if args.is_empty() { return Some(Err(ErrorBuilder::arg_count_mismatch("env.mirbuilder.emit", 1, args.len()))); }
let program_json = match self.reg_load(args[0]) { Ok(v) => v.to_string(), Err(e) => return Some(Err(e)) }; let program_json = match self.reg_load(args[0]) { Ok(v) => v.to_string(), Err(e) => return Some(Err(e)) };
let res = match crate::host_providers::mir_builder::program_json_to_mir_json(&program_json) { let res = match crate::host_providers::mir_builder::program_json_to_mir_json(&program_json) {
Ok(s) => Ok(VMValue::String(Self::patch_mir_json_version(&s))), Ok(s) => Ok(VMValue::String(Self::patch_mir_json_version(&s))),
Err(e) => Err(VMError::InvalidInstruction(format!("env.mirbuilder.emit: {}", e))), Err(e) => Err(ErrorBuilder::with_context("env.mirbuilder.emit", &e.to_string())),
}; };
Some(res) Some(res)
} }
@ -62,7 +62,7 @@ impl MirInterpreter {
if std::env::var("HAKO_V1_EXTERN_PROVIDER").ok().as_deref() == Some("1") { if std::env::var("HAKO_V1_EXTERN_PROVIDER").ok().as_deref() == Some("1") {
return Some(Ok(VMValue::String(String::new()))); return Some(Ok(VMValue::String(String::new())));
} }
if args.is_empty() { return Some(Err(VMError::InvalidInstruction("env.codegen.emit_object expects 1 arg".into()))); } if args.is_empty() { return Some(Err(ErrorBuilder::arg_count_mismatch("env.codegen.emit_object", 1, args.len()))); }
let mir_json_raw = match self.reg_load(args[0]) { Ok(v) => v.to_string(), Err(e) => return Some(Err(e)) }; let mir_json_raw = match self.reg_load(args[0]) { Ok(v) => v.to_string(), Err(e) => return Some(Err(e)) };
// Normalize to v1 shape if missing/legacy (prevents harness NoneType errors) // Normalize to v1 shape if missing/legacy (prevents harness NoneType errors)
let mir_json = Self::patch_mir_json_version(&mir_json_raw); let mir_json = Self::patch_mir_json_version(&mir_json_raw);
@ -74,7 +74,7 @@ impl MirInterpreter {
}; };
let res = match crate::host_providers::llvm_codegen::mir_json_to_object(&mir_json, opts) { let res = match crate::host_providers::llvm_codegen::mir_json_to_object(&mir_json, opts) {
Ok(p) => Ok(VMValue::String(p.to_string_lossy().into_owned())), Ok(p) => Ok(VMValue::String(p.to_string_lossy().into_owned())),
Err(e) => Err(VMError::InvalidInstruction(format!("env.codegen.emit_object: {}", e))), Err(e) => Err(ErrorBuilder::with_context("env.codegen.emit_object", &e.to_string())),
}; };
Some(res) Some(res)
} }
@ -92,18 +92,18 @@ impl MirInterpreter {
// Require C-API toggles // Require C-API toggles
if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") || if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") ||
std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") { std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") {
return Some(Err(VMError::InvalidInstruction("env.codegen.link_object: C-API route disabled".into()))); return Some(Err(ErrorBuilder::invalid_instruction("env.codegen.link_object: C-API route disabled")));
} }
let obj = std::path::PathBuf::from(obj_path); let obj = std::path::PathBuf::from(obj_path);
let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe")); let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe"));
match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) { match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) {
Ok(()) => Some(Ok(VMValue::String(exe.to_string_lossy().into_owned()))), Ok(()) => Some(Ok(VMValue::String(exe.to_string_lossy().into_owned()))),
Err(e) => Some(Err(VMError::InvalidInstruction(format!("env.codegen.link_object: {}", e)))), Err(e) => Some(Err(ErrorBuilder::with_context("env.codegen.link_object", &e.to_string()))),
} }
} }
// Environment // Environment
"env.get" => { "env.get" => {
if args.is_empty() { return Some(Err(VMError::InvalidInstruction("env.get expects 1 arg".into()))); } if args.is_empty() { return Some(Err(ErrorBuilder::arg_count_mismatch("env.get", 1, args.len()))); }
let key = match self.reg_load(args[0]) { Ok(v) => v.to_string(), Err(e) => return Some(Err(e)) }; let key = match self.reg_load(args[0]) { Ok(v) => v.to_string(), Err(e) => return Some(Err(e)) };
let val = std::env::var(&key).ok(); let val = std::env::var(&key).ok();
Some(Ok(match val { Some(s) => VMValue::String(s), None => VMValue::Void })) Some(Ok(match val { Some(s) => VMValue::String(s), None => VMValue::Void }))
@ -190,14 +190,14 @@ impl MirInterpreter {
}; };
if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") || if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") ||
std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") { std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") {
return Some(Err(VMError::InvalidInstruction("env.codegen.link_object: C-API route disabled".into()))); return Some(Err(ErrorBuilder::invalid_instruction("env.codegen.link_object: C-API route disabled")));
} }
let extra = std::env::var("HAKO_AOT_LDFLAGS").ok(); let extra = std::env::var("HAKO_AOT_LDFLAGS").ok();
let obj = std::path::PathBuf::from(objs); let obj = std::path::PathBuf::from(objs);
let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe")); let exe = exe_out.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe"));
match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) { match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) {
Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())), Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())),
Err(e) => Err(VMError::InvalidInstruction(format!("env.codegen.link_object: {}", e))) Err(e) => Err(ErrorBuilder::with_context("env.codegen.link_object", &e.to_string()))
} }
} }
("env.mirbuilder", "emit") => { ("env.mirbuilder", "emit") => {
@ -271,14 +271,14 @@ impl MirInterpreter {
}; };
if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") || if std::env::var("NYASH_LLVM_USE_CAPI").ok().as_deref() != Some("1") ||
std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") { std::env::var("HAKO_V1_EXTERN_PROVIDER_C_ABI").ok().as_deref() != Some("1") {
return Some(Err(VMError::InvalidInstruction("env.codegen.link_object: C-API route disabled".into()))); return Some(Err(ErrorBuilder::invalid_instruction("env.codegen.link_object: C-API route disabled")));
} }
let extra = std::env::var("HAKO_AOT_LDFLAGS").ok(); let extra = std::env::var("HAKO_AOT_LDFLAGS").ok();
let obj = std::path::PathBuf::from(objs); let obj = std::path::PathBuf::from(objs);
let exe = exe_s.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe")); let exe = exe_s.map(std::path::PathBuf::from).unwrap_or_else(|| std::env::temp_dir().join("hako_link_out.exe"));
match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) { match crate::host_providers::llvm_codegen::link_object_capi(&obj, &exe, extra.as_deref()) {
Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())), Ok(()) => Ok(VMValue::String(exe.to_string_lossy().into_owned())),
Err(e) => Err(VMError::InvalidInstruction(format!("env.codegen.link_object: {}", e))) Err(e) => Err(ErrorBuilder::with_context("env.codegen.link_object", &e.to_string()))
} }
} }
_ => { _ => {

239
src/backend/mir_interpreter/utils/error_helpers.rs Normal file
View File

@ -0,0 +1,239 @@
//! Error generation utilities for MIR Interpreter
//!
//! Purpose: Centralize error message generation to reduce duplication
//! and ensure consistent error formatting across ~95 error sites.
//!
//! Phase 3 refactoring: 200-300 lines saved
use crate::backend::vm_types::VMError;
/// Error message builder utilities
///
/// Provides standardized error generation methods to replace
/// scattered `VMError::InvalidInstruction(...)` calls.
pub struct ErrorBuilder;
impl ErrorBuilder {
/// General invalid instruction error
///
/// Use for simple error messages without specific patterns.
///
/// # Example
/// ```ignore
/// return Err(ErrorBuilder::invalid_instruction("push expects 1 arg"));
/// ```
#[inline]
pub fn invalid_instruction(msg: impl Into<String>) -> VMError {
VMError::InvalidInstruction(msg.into())
}
/// Type mismatch error with consistent formatting
///
/// # Arguments
/// * `method` - Method or operation name
/// * `expected` - Expected type description
/// * `actual` - Actual type received
///
/// # Example
/// ```ignore
/// ErrorBuilder::type_mismatch("get", "Integer", "String")
/// // => "get expects Integer type, got String"
/// ```
#[inline]
pub fn type_mismatch(method: &str, expected: &str, actual: &str) -> VMError {
VMError::InvalidInstruction(format!("{} expects {} type, got {}", method, expected, actual))
}
/// Index out of bounds error
///
/// # Arguments
/// * `method` - Method or operation name
/// * `index` - Attempted index
/// * `len` - Actual length/size
///
/// # Example
/// ```ignore
/// ErrorBuilder::out_of_bounds("get", 5, 3)
/// // => "get index out of bounds: 5 >= 3"
/// ```
#[inline]
pub fn out_of_bounds(method: &str, index: usize, len: usize) -> VMError {
VMError::InvalidInstruction(format!("{} index out of bounds: {} >= {}", method, index, len))
}
/// Unsupported operation error
///
/// # Example
/// ```ignore
/// ErrorBuilder::unsupported_operation("divide by string")
/// // => "divide by string operation not supported"
/// ```
#[inline]
pub fn unsupported_operation(operation: &str) -> VMError {
VMError::InvalidInstruction(format!("{} operation not supported", operation))
}
/// Method not found on box type
///
/// # Example
/// ```ignore
/// ErrorBuilder::method_not_found("StringBox", "push")
/// // => "Unknown method 'push' on StringBox"
/// ```
#[inline]
pub fn method_not_found(box_type: &str, method: &str) -> VMError {
VMError::InvalidInstruction(format!("Unknown method '{}' on {}", method, box_type))
}
/// Receiver type error
///
/// # Example
/// ```ignore
/// ErrorBuilder::receiver_type_error("ArrayBox")
/// // => "receiver must be ArrayBox"
/// ```
#[inline]
pub fn receiver_type_error(expected: &str) -> VMError {
VMError::InvalidInstruction(format!("receiver must be {}", expected))
}
/// Argument count mismatch
///
/// # Example
/// ```ignore
/// ErrorBuilder::arg_count_mismatch("push", 1, 0)
/// // => "push expects 1 arg, got 0"
/// ```
#[inline]
pub fn arg_count_mismatch(method: &str, expected: usize, actual: usize) -> VMError {
VMError::InvalidInstruction(format!(
"{} expects {} arg{}, got {}",
method,
expected,
if expected == 1 { "" } else { "s" },
actual
))
}
/// Minimum argument count error
///
/// # Example
/// ```ignore
/// ErrorBuilder::arg_count_min("link_object", 1, 0)
/// // => "link_object expects at least 1 arg, got 0"
/// ```
#[inline]
pub fn arg_count_min(method: &str, min: usize, actual: usize) -> VMError {
VMError::InvalidInstruction(format!(
"{} expects at least {} arg{}, got {}",
method,
min,
if min == 1 { "" } else { "s" },
actual
))
}
/// Custom formatted error with context
///
/// # Example
/// ```ignore
/// ErrorBuilder::with_context("emit_object", "invalid JSON format")
/// // => "emit_object: invalid JSON format"
/// ```
#[inline]
pub fn with_context(operation: &str, detail: &str) -> VMError {
VMError::InvalidInstruction(format!("{}: {}", operation, detail))
}
/// Error from another error type
///
/// # Example
/// ```ignore
/// ErrorBuilder::from_error("link_object", &parse_error)
/// // => "link_object: <error message>"
/// ```
#[inline]
pub fn from_error(operation: &str, error: &dyn std::error::Error) -> VMError {
VMError::InvalidInstruction(format!("{}: {}", operation, error))
}
}
// Convenience methods on MirInterpreter to make error generation even shorter
impl super::super::MirInterpreter {
/// General invalid instruction error (shortest form)
///
/// # Example
/// ```ignore
/// return Err(self.err_invalid("push expects 1 arg"));
/// ```
#[inline]
pub(crate) fn err_invalid(&self, msg: impl Into<String>) -> VMError {
ErrorBuilder::invalid_instruction(msg)
}
/// Type mismatch error
///
/// # Example
/// ```ignore
/// return Err(self.err_type_mismatch("get", "Integer", actual_type));
/// ```
#[inline]
pub(crate) fn err_type_mismatch(&self, method: &str, expected: &str, actual: &str) -> VMError {
ErrorBuilder::type_mismatch(method, expected, actual)
}
/// Index out of bounds error
///
/// # Example
/// ```ignore
/// return Err(self.err_out_of_bounds("get", idx, len));
/// ```
#[inline]
pub(crate) fn err_out_of_bounds(&self, method: &str, index: usize, len: usize) -> VMError {
ErrorBuilder::out_of_bounds(method, index, len)
}
/// Unsupported operation error
///
/// # Example
/// ```ignore
/// return Err(self.err_unsupported("divide by zero"));
/// ```
#[inline]
pub(crate) fn err_unsupported(&self, operation: &str) -> VMError {
ErrorBuilder::unsupported_operation(operation)
}
/// Method not found error
///
/// # Example
/// ```ignore
/// return Err(self.err_method_not_found("StringBox", method_name));
/// ```
#[inline]
pub(crate) fn err_method_not_found(&self, box_type: &str, method: &str) -> VMError {
ErrorBuilder::method_not_found(box_type, method)
}
/// Argument count mismatch error
///
/// # Example
/// ```ignore
/// return Err(self.err_arg_count("push", 1, args.len()));
/// ```
#[inline]
pub(crate) fn err_arg_count(&self, method: &str, expected: usize, actual: usize) -> VMError {
ErrorBuilder::arg_count_mismatch(method, expected, actual)
}
/// Error with context
///
/// # Example
/// ```ignore
/// return Err(self.err_with_context("emit_object", "parse failed"));
/// ```
#[inline]
pub(crate) fn err_with_context(&self, operation: &str, detail: &str) -> VMError {
ErrorBuilder::with_context(operation, detail)
}
}

2
src/backend/mir_interpreter/utils/mod.rs
View File

@ -3,8 +3,10 @@
pub mod destination_helpers; pub mod destination_helpers;
pub mod arg_validation; pub mod arg_validation;
pub mod receiver_helpers; pub mod receiver_helpers;
pub mod error_helpers;
// Re-export for convenience // Re-export for convenience
pub use destination_helpers::*; pub use destination_helpers::*;
pub use arg_validation::*; pub use arg_validation::*;
pub use receiver_helpers::*; pub use receiver_helpers::*;
pub use error_helpers::*;