Merge pull request #11 from mist-go/working-go-compiler

Working go compiler
This commit is contained in:
2026-04-22 09:59:38 +02:00
committed by GitHub
20 changed files with 1615 additions and 46 deletions
Generated
+10
View File
@@ -17,6 +17,13 @@ version = "1.0.4"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801" checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
[[package]]
name = "codegen"
version = "0.1.0"
dependencies = [
"parser",
]
[[package]] [[package]]
name = "cpufeatures" name = "cpufeatures"
version = "0.2.17" version = "0.2.17"
@@ -78,6 +85,7 @@ checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
name = "mist" name = "mist"
version = "0.1.0" version = "0.1.0"
dependencies = [ dependencies = [
"codegen",
"parser", "parser",
"semantic", "semantic",
"serde", "serde",
@@ -160,6 +168,8 @@ name = "semantic"
version = "0.1.0" version = "0.1.0"
dependencies = [ dependencies = [
"parser", "parser",
"serde",
"serde_json",
] ]
[[package]] [[package]]
+1
View File
@@ -8,3 +8,4 @@ serde = { version = "1.0.228", features = ["serde_derive"] }
serde_json = "1.0.149" serde_json = "1.0.149"
parser = { path = "./parser" } parser = { path = "./parser" }
semantic = { path = "./semantic" } semantic = { path = "./semantic" }
codegen = { path = "./codegen" }
+248
View File
@@ -0,0 +1,248 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4
[[package]]
name = "block-buffer"
version = "0.10.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
dependencies = [
"generic-array",
]
[[package]]
name = "cfg-if"
version = "1.0.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
[[package]]
name = "codegen"
version = "0.1.0"
dependencies = [
"parser",
]
[[package]]
name = "cpufeatures"
version = "0.2.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
dependencies = [
"libc",
]
[[package]]
name = "crypto-common"
version = "0.1.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "78c8292055d1c1df0cce5d180393dc8cce0abec0a7102adb6c7b1eef6016d60a"
dependencies = [
"generic-array",
"typenum",
]
[[package]]
name = "digest"
version = "0.10.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
dependencies = [
"block-buffer",
"crypto-common",
]
[[package]]
name = "generic-array"
version = "0.14.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
dependencies = [
"typenum",
"version_check",
]
[[package]]
name = "itoa"
version = "1.0.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
[[package]]
name = "libc"
version = "0.2.185"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "52ff2c0fe9bc6cb6b14a0592c2ff4fa9ceb83eea9db979b0487cd054946a2b8f"
[[package]]
name = "memchr"
version = "2.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
[[package]]
name = "parser"
version = "0.1.0"
dependencies = [
"pest",
"pest_derive",
"serde",
"serde_json",
]
[[package]]
name = "pest"
version = "2.8.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e0848c601009d37dfa3430c4666e147e49cdcf1b92ecd3e63657d8a5f19da662"
dependencies = [
"memchr",
"ucd-trie",
]
[[package]]
name = "pest_derive"
version = "2.8.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "11f486f1ea21e6c10ed15d5a7c77165d0ee443402f0780849d1768e7d9d6fe77"
dependencies = [
"pest",
"pest_generator",
]
[[package]]
name = "pest_generator"
version = "2.8.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8040c4647b13b210a963c1ed407c1ff4fdfa01c31d6d2a098218702e6664f94f"
dependencies = [
"pest",
"pest_meta",
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "pest_meta"
version = "2.8.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "89815c69d36021a140146f26659a81d6c2afa33d216d736dd4be5381a7362220"
dependencies = [
"pest",
"sha2",
]
[[package]]
name = "proc-macro2"
version = "1.0.106"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
dependencies = [
"unicode-ident",
]
[[package]]
name = "quote"
version = "1.0.45"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
dependencies = [
"proc-macro2",
]
[[package]]
name = "serde"
version = "1.0.228"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
dependencies = [
"serde_core",
"serde_derive",
]
[[package]]
name = "serde_core"
version = "1.0.228"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
dependencies = [
"serde_derive",
]
[[package]]
name = "serde_derive"
version = "1.0.228"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "serde_json"
version = "1.0.149"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
dependencies = [
"itoa",
"memchr",
"serde",
"serde_core",
"zmij",
]
[[package]]
name = "sha2"
version = "0.10.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
dependencies = [
"cfg-if",
"cpufeatures",
"digest",
]
[[package]]
name = "syn"
version = "2.0.117"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
]
[[package]]
name = "typenum"
version = "1.20.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "40ce102ab67701b8526c123c1bab5cbe42d7040ccfd0f64af1a385808d2f43de"
[[package]]
name = "ucd-trie"
version = "0.1.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2896d95c02a80c6d6a5d6e953d479f5ddf2dfdb6a244441010e373ac0fb88971"
[[package]]
name = "unicode-ident"
version = "1.0.24"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
[[package]]
name = "version_check"
version = "0.9.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
[[package]]
name = "zmij"
version = "1.0.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
+7
View File
@@ -0,0 +1,7 @@
[package]
name = "codegen"
version = "0.1.0"
edition = "2024"
[dependencies]
parser = { path = "../parser" }
+359
View File
@@ -0,0 +1,359 @@
use parser::ast::{BinaryOp, Block, Expression, Postfix, Statement, TopLevel, TypeExpr, VarKind};
pub struct GoCodegen {
output: String,
indent: usize,
}
impl GoCodegen {
pub fn new() -> Self {
Self {
output: String::new(),
indent: 0,
}
}
fn indent_str(&self) -> String {
" ".repeat(self.indent)
}
fn add_indented(&mut self, s: &str) {
self.output.push_str(&format!("{}{}", self.indent_str(), s));
}
fn add(&mut self, s: &str) {
self.output.push_str(s);
}
fn addln(&mut self, s: &str) {
self.add(s);
self.add("\n");
}
fn add_indentedln(&mut self, s: &str) {
self.add_indented(s);
self.add("\n");
}
pub fn generate(&mut self, toplevels: &[TopLevel]) -> String {
for tl in toplevels {
self.generate_toplevel(tl);
}
self.output.clone()
}
fn generate_toplevel(&mut self, tl: &TopLevel) {
match tl {
TopLevel::Import(path) => {
let import_path = path.replace("\"", "");
if import_path.starts_with("./") || import_path.starts_with("/") {
self.addln(&format!("import \"{}\"", import_path));
} else {
self.addln(&format!("import \"{}\"", import_path));
}
self.addln("");
}
TopLevel::StructDecl {
export,
name,
fields,
} => {
let name = if *export { name } else { name };
self.addln(&format!("type {} struct {{", name));
self.indent += 1;
for (field_name, (_, ty)) in &fields.0 {
let go_ty = self.translate_type(ty);
self.addln(&format!("{} {}", field_name, go_ty));
}
self.indent -= 1;
self.addln("}\n");
}
TopLevel::FunctionDecl {
export,
name,
params,
return_type,
body,
} => {
let name = if *export {
format!("{}", name)
} else {
name.clone()
};
let params_str = params
.0
.iter()
.map(|(n, (_, t))| format!("{} {}", n, self.translate_type(t)))
.collect::<Vec<_>>()
.join(", ");
let ret_ty = return_type
.as_ref()
.map(|t| self.translate_type(t))
.unwrap_or_else(|| "".to_string());
if ret_ty.is_empty() {
self.addln(&format!("func {}({}) {{", name, params_str));
} else {
self.addln(&format!("func {}({}) {} {{", name, params_str, ret_ty));
}
self.indent += 1;
self.generate_block(body);
self.indent -= 1;
self.addln("}\n");
}
TopLevel::Package(pkg) => {
self.addln(&format!("package {}", pkg));
self.addln("");
}
}
}
fn translate_type(&self, ty: &TypeExpr) -> String {
match ty {
TypeExpr::Identifier(name) => match name.as_str() {
"int" => "int".to_string(),
"float" | "float64" => "float64".to_string(),
"float32" => "float32".to_string(),
"bool" => "bool".to_string(),
"string" => "string".to_string(),
"byte" => "byte".to_string(),
"rune" => "rune".to_string(),
_ => name.clone(),
},
}
}
fn generate_block(&mut self, block: &Block) {
for stmt in &block.0 {
self.generate_statement(stmt);
}
}
fn generate_statement(&mut self, stmt: &Statement) {
match stmt {
Statement::Expression(expr) => {
self.add_indentedln(&format!("{};", self.generate_expression(expr)));
}
Statement::Block(block) => {
self.add_indentedln("{");
self.indent += 1;
self.generate_block(block);
self.indent -= 1;
self.add_indentedln("}\n");
}
Statement::VarDecl { kind, name, init } => {
let go_kind = match kind {
VarKind::Let | VarKind::Const => "var",
VarKind::Var => "var",
};
let init_expr = init
.as_ref()
.map(|e| format!(" = {}", self.generate_expression(e)))
.unwrap_or_else(|| "".to_string());
self.add_indentedln(&format!("{} {}{};\n", go_kind, name, init_expr));
}
Statement::VarAssign { target, value } => {
self.add_indentedln(&format!(
"{} = {};\n",
self.generate_expression(target),
self.generate_expression(value)
));
}
Statement::If {
condition,
then_branch,
else_branch,
} => {
self.add_indented(&format!("if {} ", self.generate_expression(condition)));
self.generate_statement(then_branch);
if let Some(else_br) = else_branch {
self.add_indented("else ");
self.generate_statement(else_br);
}
}
Statement::While { condition, body } => {
self.add_indented(&format!("for {} ", self.generate_expression(condition)));
self.generate_statement(body);
}
Statement::For {
init,
condition,
update,
body,
} => {
let (kind, init_name, init_val) = init;
let init_expr = init_val
.as_ref()
.map(|e| format!(" = {}", self.generate_expression(e)))
.unwrap_or_else(|| "".to_string());
let init_str = format!("{} {}{}", self.var_kind_to_go(kind), init_name, init_expr);
let cond_str = condition
.as_ref()
.map(|e| self.generate_expression(e))
.unwrap_or_else(|| "true".to_string());
let update_str = update
.as_ref()
.map(|s| self.generate_expression(&self.stmt_to_expr(s)))
.unwrap_or_else(|| "".to_string());
self.add_indented(&format!("for {}; {}; {} ", init_str, cond_str, update_str));
self.generate_statement(body);
}
Statement::Return(expr) => {
let ret_val = expr
.as_ref()
.map(|e| self.generate_expression(e))
.unwrap_or_else(|| "".to_string());
self.add_indentedln(&format!("return {};\n", ret_val));
}
Statement::Break => {
self.add_indentedln("break;\n");
}
Statement::Continue => {
self.add_indentedln("continue;\n");
}
}
}
fn stmt_to_expr(&self, stmt: &Statement) -> Expression {
match stmt {
Statement::Expression(e) => e.clone(),
_ => Expression::Identifier(String::new()),
}
}
fn var_kind_to_go(&self, kind: &VarKind) -> String {
match kind {
VarKind::Let | VarKind::Const => "var".to_string(),
VarKind::Var => "var".to_string(),
}
}
fn generate_expression(&self, expr: &Expression) -> String {
match expr {
Expression::Identifier(name) => name.clone(),
Expression::IntLiteral(n) => n.to_string(),
Expression::FloatLiteral(n) => n.to_string(),
Expression::BoolLiteral(b) => b.to_string(),
Expression::StringLiteral(s) => format!("\"{}\"", s),
Expression::Postfix { initial, postfixes } => {
let base = self.generate_expression(initial);
self.apply_postfixes(&base, postfixes)
}
}
}
fn apply_postfixes(&self, base: &str, postfixes: &[Postfix]) -> String {
let mut result = base.to_string();
for postfix in postfixes {
result = match postfix {
Postfix::FieldAccess(field) => format!("{}.{}", result, field),
Postfix::Call(args) => {
let args_str = args
.iter()
.map(|a| self.generate_expression(a))
.collect::<Vec<_>>()
.join(", ");
format!("{}({})", result, args_str)
}
Postfix::Index(idx) => format!("{}[{}]", result, self.generate_expression(idx)),
Postfix::Binary(op, rhs) => {
let op_str = match op {
BinaryOp::Plus => "+",
BinaryOp::Minus => "-",
BinaryOp::Multiply => "*",
BinaryOp::Divide => "/",
BinaryOp::Modulo => "%",
BinaryOp::Equal => "==",
BinaryOp::NotEqual => "!=",
BinaryOp::LessThan => "<",
BinaryOp::GreaterThan => ">",
BinaryOp::LessThanOrEqual => "<=",
BinaryOp::GreaterThanOrEqual => ">=",
};
format!("{} {} {}", result, op_str, self.generate_expression(rhs))
}
};
}
result
}
}
impl Default for GoCodegen {
fn default() -> Self {
Self::new()
}
}
#[cfg(test)]
mod tests {
use super::*;
use parser::ast::{Block, Expression, ParamList, Statement, TopLevel, TypeExpr};
use std::collections::HashMap;
#[test]
fn test_int_literal() {
let cg = GoCodegen::new();
let expr = Expression::IntLiteral(42);
let result = cg.generate_expression(&expr);
assert_eq!(result, "42");
}
#[test]
fn test_string_literal() {
let cg = GoCodegen::new();
let expr = Expression::StringLiteral("hello".to_string());
let result = cg.generate_expression(&expr);
assert_eq!(result, "\"hello\"");
}
#[test]
fn test_function_decl() {
let mut cg = GoCodegen::new();
let toplevel = TopLevel::FunctionDecl {
export: true,
name: "main".to_string(),
params: ParamList(HashMap::new()),
return_type: None,
body: Block(vec![Statement::Return(None)]),
};
cg.generate_toplevel(&toplevel);
let output = cg.output.clone();
assert!(output.contains("func main()"));
}
#[test]
fn test_struct_decl() {
let mut cg = GoCodegen::new();
let mut fields = HashMap::new();
fields.insert(
"x".to_string(),
(true, TypeExpr::Identifier("int".to_string())),
);
let toplevel = TopLevel::StructDecl {
export: true,
name: "Point".to_string(),
fields: ParamList(fields),
};
cg.generate_toplevel(&toplevel);
let output = cg.output.clone();
assert!(output.contains("type Point struct"));
assert!(output.contains("x int"));
}
#[test]
fn test_if_statement() {
let mut cg = GoCodegen::new();
let stmt = Statement::If {
condition: Expression::Identifier("x".to_string()),
then_branch: Box::new(Statement::Return(Some(Expression::IntLiteral(1)))),
else_branch: None,
};
cg.generate_statement(&stmt);
let output = cg.output.clone();
assert!(output.contains("if x"));
}
}
+9
View File
@@ -0,0 +1,9 @@
module mapgen
go 1.25.5
require (
golang.org/x/mod v0.35.0 // indirect
golang.org/x/sync v0.20.0 // indirect
golang.org/x/tools v0.44.0 // indirect
)
+6
View File
@@ -0,0 +1,6 @@
golang.org/x/mod v0.35.0 h1:Ww1D637e6Pg+Zb2KrWfHQUnH2dQRLBQyAtpr/haaJeM=
golang.org/x/mod v0.35.0/go.mod h1:+GwiRhIInF8wPm+4AoT6L0FA1QWAad3OMdTRx4tFYlU=
golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
golang.org/x/tools v0.44.0 h1:UP4ajHPIcuMjT1GqzDWRlalUEoY+uzoZKnhOjbIPD2c=
golang.org/x/tools v0.44.0/go.mod h1:KA0AfVErSdxRZIsOVipbv3rQhVXTnlU6UhKxHd1seDI=
+188
View File
@@ -0,0 +1,188 @@
package main
import (
"encoding/json"
"fmt"
"go/token"
"go/types"
"os"
"unicode"
"golang.org/x/tools/go/packages"
)
type TypeSymbol string
type VarSymbol struct {
Export bool `json:"export"`
VarType TypeSymbol `json:"var_type"`
Name string `json:"name"`
}
type FunctionSymbol struct {
Export bool `json:"export"`
Name string `json:"name"`
Params map[string]VarSymbol `json:"params"`
ReturnTypes []TypeSymbol `json:"return_types"`
}
type StructSymbol struct {
Export bool `json:"export"`
Name string `json:"name"`
Fields map[string]VarSymbol `json:"fields"`
Methods map[string]FunctionSymbol `json:"methods"`
}
type TopLevelSymbolScope struct {
PackageName string `json:"package_name"`
Structs map[string]StructSymbol `json:"structs"`
Functions map[string]FunctionSymbol `json:"functions"`
}
func main() {
cfg := &packages.Config{
Mode: packages.NeedName |
packages.NeedTypes |
packages.NeedTypesInfo |
packages.NeedModule,
}
// you can expand this to multiple packages later
pkgs, err := packages.Load(cfg, "fmt")
if err != nil {
panic(err)
}
if packages.PrintErrors(pkgs) > 0 {
os.Exit(1)
}
// 🔑 FINAL RESULT: map[import_path]scope
result := make(map[string]TopLevelSymbolScope)
for _, pkg := range pkgs {
scopeData := TopLevelSymbolScope{
PackageName: pkg.Name, // e.g. "http"
Structs: make(map[string]StructSymbol),
Functions: make(map[string]FunctionSymbol),
}
scope := pkg.Types.Scope()
for _, name := range scope.Names() {
if !token.IsExported(name) {
continue
}
obj := scope.Lookup(name)
switch obj := obj.(type) {
case *types.Func:
scopeData.Functions[LowerFirst(name)] = buildFunction(obj)
case *types.TypeName:
if strct, ok := buildStruct(obj); ok {
scopeData.Structs[name] = strct
}
}
}
// 🔑 key = import path (e.g. "net/http")
result[pkg.PkgPath] = scopeData
}
out, err := json.MarshalIndent(result, "", " ")
if err != nil {
panic(err)
}
fmt.Println(string(out))
}
func LowerFirst(s string) string {
if s == "" {
return ""
}
r := []rune(s)
r[0] = unicode.ToLower(r[0])
return string(r)
}
func buildFunction(fn *types.Func) FunctionSymbol {
sig := fn.Type().(*types.Signature)
params := make(map[string]VarSymbol)
for i := 0; i < sig.Params().Len(); i++ {
p := sig.Params().At(i)
name := p.Name()
if name == "" {
name = fmt.Sprintf("param%d", i)
}
params[name] = VarSymbol{
Export: true,
Name: name,
VarType: TypeSymbol(p.Type().String()),
}
}
var returnTypes []TypeSymbol
for i := 0; i < sig.Results().Len(); i++ {
r := sig.Results().At(i)
returnTypes = append(returnTypes, TypeSymbol(r.Type().String()))
}
return FunctionSymbol{
Export: true, // already filtered before calling
Name: fn.Name(),
Params: params,
ReturnTypes: returnTypes,
}
}
func buildStruct(tn *types.TypeName) (StructSymbol, bool) {
underlying := tn.Type().Underlying()
strct, ok := underlying.(*types.Struct)
if !ok {
return StructSymbol{}, false
}
fields := make(map[string]VarSymbol)
for i := 0; i < strct.NumFields(); i++ {
f := strct.Field(i)
if !token.IsExported(f.Name()) {
continue
}
fields[f.Name()] = VarSymbol{
Export: true,
Name: f.Name(),
VarType: TypeSymbol(f.Type().String()),
}
}
methods := make(map[string]FunctionSymbol)
methodSet := types.NewMethodSet(tn.Type())
for i := 0; i < methodSet.Len(); i++ {
m := methodSet.At(i).Obj().(*types.Func)
if !token.IsExported(m.Name()) {
continue
}
methods[LowerFirst(m.Name())] = buildFunction(m)
}
return StructSymbol{
Export: true,
Name: tn.Name(),
Fields: fields,
Methods: methods,
}, true
}
+1
View File
@@ -31,6 +31,7 @@ pub enum BinaryOp {
#[derive(Debug, Clone, Serialize)] #[derive(Debug, Clone, Serialize)]
pub enum TopLevel { pub enum TopLevel {
Import(String), Import(String),
Package(String),
StructDecl { StructDecl {
export: bool, export: bool,
name: String, name: String,
+3 -1
View File
@@ -13,7 +13,9 @@ inner_str = @{ (!"\"" ~ ANY)* }
// ================= TOP LEVEL ================= // ================= TOP LEVEL =================
top_level = _{ import | function_decl | struct_decl } top_level = _{ import | function_decl | struct_decl | package }
package = { "package" ~ identifier ~ ";" }
export = { "export" } export = { "export" }
+4
View File
@@ -70,6 +70,10 @@ impl TopLevel {
let path = pair.into_inner().next().unwrap().as_str().to_string(); let path = pair.into_inner().next().unwrap().as_str().to_string();
Some(TopLevel::Import(path)) Some(TopLevel::Import(path))
} }
Rule::package => {
let name = pair.into_inner().next().unwrap().as_str().to_string();
Some(TopLevel::Package(name))
}
Rule::function_decl => { Rule::function_decl => {
let mut inner = pair.into_inner(); let mut inner = pair.into_inner();
+2
View File
@@ -5,3 +5,5 @@ edition = "2024"
[dependencies] [dependencies]
parser = { path = "../parser" } parser = { path = "../parser" }
serde = { version = "1.0.228", features = ["serde_derive"] }
serde_json = "1.0.149"
+149 -18
View File
@@ -6,13 +6,22 @@ use std::{
}, },
}; };
use crate::top_level::{FunctionSymbol, StructSymbol, TopLevelSymbolScope, TypeSymbol, VarSymbol}; use crate::top_level::{
FunctionSymbol, JSONScope, StructSymbol, TopLevelSymbolScope, TypeSymbol, VarSymbol,
};
#[derive(Clone, Debug)] #[derive(Clone, Debug)]
pub enum TypeRef { pub enum TypeRef {
Struct(StructRef), Struct(StructRef),
Function(FunctionRef), Function(FunctionRef),
Int, Package(PackageRef),
Name(String),
}
#[derive(Clone, Debug)]
pub struct PackageRef {
pub name: String,
pub variables: HashMap<String, Arc<VarRef>>,
} }
#[derive(Clone, Debug)] #[derive(Clone, Debug)]
@@ -58,6 +67,17 @@ impl TopLevelHirScope {
scope.struct_ref(tlss, symbol); scope.struct_ref(tlss, symbol);
} }
for (_, symbol) in &tlss.imports {
scope.variables.insert(
symbol.package_name.clone(),
Arc::new(VarRef {
export: false,
name: symbol.package_name.clone(),
var_type: Arc::new(TypeRef::Package(PackageRef::from_tlss(symbol))),
}),
);
}
scope scope
} }
@@ -142,23 +162,15 @@ impl TopLevelHirScope {
if let Some(tlss_rf) = tlss.structs.get(&symbol.0) { if let Some(tlss_rf) = tlss.structs.get(&symbol.0) {
self.struct_ref(tlss, tlss_rf) self.struct_ref(tlss, tlss_rf)
} else { } else {
match symbol.0.as_str() { let var_ref = Arc::new(VarRef {
"int" => { export: false,
let var_ref = Arc::new(VarRef { name: symbol.0.clone(),
export: false, var_type: Arc::new(TypeRef::Name(symbol.0.clone())),
name: symbol.0.clone(), });
var_type: Arc::new(TypeRef::Int),
});
self.variables.insert(symbol.0.clone(), var_ref.clone()); self.variables.insert(symbol.0.clone(), var_ref.clone());
var_ref.var_type.clone() var_ref.var_type.clone()
}
_ => {
unimplemented!("{:?}", symbol)
}
}
} }
} }
} }
@@ -181,7 +193,126 @@ impl TypeRef {
match self { match self {
TypeRef::Function(f) => f.name.clone(), TypeRef::Function(f) => f.name.clone(),
TypeRef::Struct(s) => s.name.clone(), TypeRef::Struct(s) => s.name.clone(),
TypeRef::Int => "int".to_string(), TypeRef::Package(p) => p.name.clone(),
TypeRef::Name(n) => n.clone(),
} }
} }
} }
impl PackageRef {
pub fn from_tlss(json_scope: &JSONScope) -> Self {
let mut scope = Self {
name: json_scope.package_name.clone(),
variables: HashMap::new(),
};
for (token_name, symbol) in &json_scope.functions {
scope.function_ref(json_scope, token_name, symbol);
}
for (_, symbol) in &json_scope.structs {
scope.struct_ref(json_scope, symbol);
}
scope
}
pub fn function_ref(
&mut self,
json_scope: &JSONScope,
token_name: &String,
symbol: &FunctionSymbol,
) {
if self.variables.get(&symbol.name).is_none() {
let name = symbol.name.clone();
if let Some(_) = json_scope.functions.get(token_name) {
let rf = FunctionRef {
export: symbol.export,
name: name.clone(),
params: symbol
.params
.iter()
.map(|(name, v)| (name.clone(), self.var_ref(json_scope, v)))
.collect(),
return_type: symbol
.return_type
.clone()
.map(|rt| self.type_ref(json_scope, &rt)),
};
self.variables.insert(
token_name.clone(),
Arc::new(VarRef {
export: false,
name: name.clone(),
var_type: Arc::new(TypeRef::Function(rf)),
}),
);
} else {
unimplemented!()
}
}
}
pub fn struct_ref(&mut self, json_scope: &JSONScope, symbol: &StructSymbol) -> Arc<TypeRef> {
if let Some(rf) = self.variables.get(&symbol.name) {
rf.var_type.clone()
} else {
let name = symbol.name.clone();
let rf = Arc::new(TypeRef::Struct(StructRef {
export: symbol.export,
name: name.clone(),
fields: symbol
.fields
.iter()
.map(|(name, v)| (name.clone(), self.var_ref(json_scope, v)))
.collect(),
}));
self.variables.insert(
symbol.name.clone(),
Arc::new(VarRef {
export: symbol.export,
name: name.clone(),
var_type: rf.clone(),
}),
);
rf
}
}
pub fn var_ref(&mut self, json_scope: &JSONScope, symbol: &VarSymbol) -> Arc<VarRef> {
Arc::new(VarRef {
export: symbol.export,
var_type: self.type_ref(json_scope, &symbol.var_type),
name: symbol.name.clone(),
})
}
pub fn type_ref(&mut self, json_scope: &JSONScope, symbol: &TypeSymbol) -> Arc<TypeRef> {
if let Some(var_ref) = self.variables.get(&symbol.0) {
var_ref.var_type.clone()
} else {
if let Some(json_scope_rf) = json_scope.structs.get(&symbol.0) {
self.struct_ref(json_scope, json_scope_rf)
} else {
let var_ref = Arc::new(VarRef {
export: false,
name: symbol.0.clone(),
var_type: Arc::new(TypeRef::Name(symbol.0.clone())),
});
self.variables.insert(symbol.0.clone(), var_ref.clone());
var_ref.var_type.clone()
}
}
}
pub fn get_reference(&self, name: &String) -> Option<Arc<VarRef>> {
self.variables.get(name).cloned()
}
}
+6 -2
View File
@@ -14,13 +14,17 @@ pub mod top_level;
pub fn walk_ast(top_scope: Arc<Scope>, tl: &mut Vec<parser::ast::TopLevel>) { pub fn walk_ast(top_scope: Arc<Scope>, tl: &mut Vec<parser::ast::TopLevel>) {
for tl in tl { for tl in tl {
match tl { match tl {
parser::ast::TopLevel::Import(_) => unimplemented!(), parser::ast::TopLevel::Import(_) => {}
parser::ast::TopLevel::Package(_) => {}
parser::ast::TopLevel::FunctionDecl { parser::ast::TopLevel::FunctionDecl {
params, body, name, .. params, body, name, ..
} => { } => {
let rf = top_scope.get_reference(name).unwrap(); let rf = top_scope.get_reference(name).unwrap();
*name = rf.name.clone();
if name != "main" {
*name = rf.name.clone();
}
match &*rf.var_type { match &*rf.var_type {
hir::TypeRef::Function(f) => walk_param_list(&f.params, params), hir::TypeRef::Function(f) => walk_param_list(&f.params, params),
+34 -8
View File
@@ -17,8 +17,11 @@ pub enum Scope {
} }
impl Scope { impl Scope {
pub fn from_top(top_level: &Vec<parser::ast::TopLevel>) -> Arc<Self> { pub fn from_top(
let tl = TopLevelSymbolScope::from(top_level); path: &std::path::PathBuf,
top_level: &Vec<parser::ast::TopLevel>,
) -> Arc<Self> {
let tl = TopLevelSymbolScope::from(path, top_level);
Arc::new(Self::TopLevel(TopLevelHirScope::from_tlss(&tl))) Arc::new(Self::TopLevel(TopLevelHirScope::from_tlss(&tl)))
} }
@@ -52,12 +55,31 @@ impl LocalScope {
} }
pub fn get_reference(&self, name: &String) -> Option<Arc<VarRef>> { pub fn get_reference(&self, name: &String) -> Option<Arc<VarRef>> {
self.variables let rf = self
.variables
.lock() .lock()
.unwrap() .unwrap()
.get(name) .get(name)
.cloned() .cloned()
.or_else(|| self.parent.get_reference(name)) .or_else(|| self.parent.get_reference(name));
match rf {
Some(v) => Some(v),
None => {
let var_ref = Arc::new(VarRef {
export: false,
name: name.clone(),
var_type: Arc::new(TypeRef::Name(name.clone())),
});
self.variables
.lock()
.unwrap()
.insert(name.clone(), var_ref.clone());
Some(var_ref)
}
}
} }
pub fn with_block(self: &Arc<Self>, block: &mut parser::ast::Block) { pub fn with_block(self: &Arc<Self>, block: &mut parser::ast::Block) {
@@ -78,6 +100,9 @@ impl LocalScope {
); );
} }
} }
Statement::Expression(e) => {
self.get_type_from_expr(e);
}
_ => {} _ => {}
} }
} }
@@ -98,6 +123,11 @@ impl LocalScope {
*id = field.name.clone(); *id = field.name.clone();
current_type = field.var_type.clone(); current_type = field.var_type.clone();
} }
TypeRef::Package(p) => {
let var_ref = p.variables.get(id)?;
*id = var_ref.name.clone();
current_type = var_ref.var_type.clone();
}
_ => unimplemented!(), _ => unimplemented!(),
}, },
Postfix::Call(_args) => match &*current_type { Postfix::Call(_args) => match &*current_type {
@@ -120,22 +150,18 @@ impl LocalScope {
) -> Option<Arc<TypeRef>> { ) -> Option<Arc<TypeRef>> {
match expr { match expr {
ast::Expression::IntLiteral(_) => self ast::Expression::IntLiteral(_) => self
.parent
.get_reference(&"int".to_string()) .get_reference(&"int".to_string())
.map(|r| r.var_type.clone()), .map(|r| r.var_type.clone()),
ast::Expression::FloatLiteral(_) => self ast::Expression::FloatLiteral(_) => self
.parent
.get_reference(&"float".to_string()) .get_reference(&"float".to_string())
.map(|r| r.var_type.clone()), .map(|r| r.var_type.clone()),
ast::Expression::BoolLiteral(_) => self ast::Expression::BoolLiteral(_) => self
.parent
.get_reference(&"bool".to_string()) .get_reference(&"bool".to_string())
.map(|r| r.var_type.clone()), .map(|r| r.var_type.clone()),
ast::Expression::StringLiteral(_) => self ast::Expression::StringLiteral(_) => self
.parent
.get_reference(&"string".to_string()) .get_reference(&"string".to_string())
.map(|r| r.var_type.clone()), .map(|r| r.var_type.clone()),
+32 -6
View File
@@ -1,20 +1,23 @@
use std::collections::HashMap; use std::collections::HashMap;
use std::fs;
use std::path::PathBuf;
use parser::ast::TopLevel; use parser::ast::TopLevel;
use parser::ast::{ParamList, TypeExpr}; use parser::ast::{ParamList, TypeExpr};
use serde::{Deserialize, Serialize};
#[derive(Clone, Debug)] #[derive(Clone, Debug, Serialize, Deserialize)]
pub struct TypeSymbol(pub String); pub struct TypeSymbol(pub String);
#[derive(Clone, Debug)] #[derive(Clone, Debug, Serialize, Deserialize)]
pub struct VarSymbol { pub struct VarSymbol {
pub export: bool, pub export: bool,
pub var_type: TypeSymbol, pub var_type: TypeSymbol,
pub name: String, pub name: String,
} }
#[derive(Clone, Debug)] #[derive(Clone, Debug, Serialize, Deserialize)]
pub struct FunctionSymbol { pub struct FunctionSymbol {
pub export: bool, pub export: bool,
pub name: String, pub name: String,
@@ -22,7 +25,7 @@ pub struct FunctionSymbol {
pub return_type: Option<TypeSymbol>, pub return_type: Option<TypeSymbol>,
} }
#[derive(Clone, Debug)] #[derive(Clone, Debug, Serialize, Deserialize)]
pub struct StructSymbol { pub struct StructSymbol {
pub export: bool, pub export: bool,
pub name: String, pub name: String,
@@ -96,22 +99,45 @@ impl StructSymbol {
} }
} }
#[derive(Clone, Debug, Serialize, Deserialize)]
pub struct JSONScope {
pub structs: HashMap<String, StructSymbol>,
pub functions: HashMap<String, FunctionSymbol>,
pub package_name: String,
}
type JsonScopeMap = HashMap<String, JSONScope>;
#[derive(Clone, Debug)] #[derive(Clone, Debug)]
pub struct TopLevelSymbolScope { pub struct TopLevelSymbolScope {
pub imports: HashMap<String, JSONScope>,
pub structs: HashMap<String, StructSymbol>, pub structs: HashMap<String, StructSymbol>,
pub functions: HashMap<String, FunctionSymbol>, pub functions: HashMap<String, FunctionSymbol>,
} }
impl TopLevelSymbolScope { impl TopLevelSymbolScope {
pub fn from(top_level: &Vec<TopLevel>) -> Self { pub fn from(path: &PathBuf, top_level: &Vec<TopLevel>) -> Self {
let mut scope = TopLevelSymbolScope { let mut scope = TopLevelSymbolScope {
imports: HashMap::new(),
structs: HashMap::new(), structs: HashMap::new(),
functions: HashMap::new(), functions: HashMap::new(),
}; };
for top in top_level { for top in top_level {
match top { match top {
TopLevel::Import(_) => unimplemented!(), TopLevel::Import(package) => {
let json = fs::read(path.join("mist.map.json")).unwrap();
let json_scope_map: JsonScopeMap = serde_json::from_slice(&json).unwrap();
let json_scope = json_scope_map
.get(&package.replace("\"", ""))
.unwrap()
.clone();
scope
.imports
.insert(json_scope.package_name.clone(), json_scope);
}
TopLevel::Package(_) => {}
TopLevel::FunctionDecl { TopLevel::FunctionDecl {
export, export,
+95
View File
@@ -0,0 +1,95 @@
use std::{fs, path::PathBuf, process, time::Instant};
use serde::Deserialize;
#[derive(Deserialize)]
struct Config {
entry: String,
out_dir: String,
}
pub fn build() {
let start = Instant::now();
// 1. find project root
let root = find_project_root().unwrap_or_else(|| {
panic!("error: could not find project root (mist.json)");
});
println!("mistc build ({})", root.display());
// 2. load config
let config = load_config(&root);
let entry_path = root.join(&config.entry);
let out_dir = root.join(&config.out_dir);
println!(" → entry: {}", entry_path.display());
// 3. read entry file
let source = match fs::read_to_string(&entry_path) {
Ok(s) => s,
Err(e) => {
eprintln!("error: failed to read entry file\n {}", e);
process::exit(1);
}
};
println!(" → parsing...");
let mut ast = match parser::parse(&source) {
Ok(ast) => ast,
Err(e) => {
eprintln!("error: parse failed\n{}", e);
process::exit(1);
}
};
println!(" → type checking...");
semantic::walk_ast(semantic::scope::Scope::from_top(&root, &ast), &mut ast);
println!(" → generating Go code...");
let mut gc = codegen::GoCodegen::new();
let output = gc.generate(&ast);
// 4. ensure build dir
if let Err(e) = fs::create_dir_all(&out_dir) {
eprintln!("error: failed to create build dir\n {}", e);
process::exit(1);
}
let out_file = out_dir.join("main.go");
if let Err(e) = fs::write(&out_file, output) {
eprintln!("error: failed to write output\n {}", e);
process::exit(1);
}
let elapsed = start.elapsed();
println!(" ✓ built {}", out_file.display());
println!("build finished in {:.2?}", elapsed);
}
pub fn find_project_root() -> Option<PathBuf> {
let mut dir = std::env::current_dir().ok()?;
loop {
if dir.join("mist.json").exists() {
return Some(dir);
}
if !dir.pop() {
return None;
}
}
}
fn load_config(root: &std::path::Path) -> Config {
let content =
std::fs::read_to_string(root.join("mist.json")).expect("failed to read mist.json");
serde_json::from_str(&content).expect("invalid mist.json format")
}
+5 -7
View File
@@ -1,3 +1,5 @@
pub mod compiler;
use std::fs; use std::fs;
use std::path::PathBuf; use std::path::PathBuf;
use std::process; use std::process;
@@ -18,7 +20,7 @@ fn main() {
eprintln!("error: expected a file path\n usage: mist build"); eprintln!("error: expected a file path\n usage: mist build");
process::exit(1); process::exit(1);
} }
cmd_build(); compiler::build();
} }
"check" => { "check" => {
if args.len() < 3 { if args.len() < 3 {
@@ -48,17 +50,13 @@ fn main() {
} }
} }
pub fn cmd_build() {
unimplemented!("build command is not implemented yet");
}
fn cmd_check(path: &str) { fn cmd_check(path: &str) {
let source = read_ms_file(path); let source = read_ms_file(path);
match parser::parse(&source) { match parser::parse(&source) {
Ok(mut ast) => { Ok(mut ast) => {
println!("parse: ok"); println!("parse: ok");
walk_ast(semantic::scope::Scope::from_top(&ast), &mut ast); // walk_ast(semantic::scope::Scope::from_top(&ast), &mut ast);
println!("{:#?}", ast) println!("{:#?}", ast)
} }
@@ -73,7 +71,7 @@ fn cmd_parse(path: &str) {
let source = read_ms_file(path); let source = read_ms_file(path);
match parser::parse(&source) { match parser::parse(&source) {
Ok(mut ast) => { Ok(mut ast) => {
walk_ast(semantic::scope::Scope::from_top(&ast), &mut ast); // walk_ast(semantic::scope::Scope::from_top(&ast), &mut ast);
fs::write("output.json", serde_json::to_string_pretty(&ast).unwrap()).unwrap_or_else( fs::write("output.json", serde_json::to_string_pretty(&ast).unwrap()).unwrap_or_else(
|e| { |e| {
+450
View File
@@ -0,0 +1,450 @@
{
"fmt": {
"package_name": "fmt",
"structs": {},
"functions": {
"append": {
"export": true,
"name": "Append",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"b": {
"export": true,
"var_type": "[]byte",
"name": "b"
}
},
"return_types": [
"[]byte"
]
},
"appendf": {
"export": true,
"name": "Appendf",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"b": {
"export": true,
"var_type": "[]byte",
"name": "b"
},
"format": {
"export": true,
"var_type": "string",
"name": "format"
}
},
"return_types": [
"[]byte"
]
},
"appendln": {
"export": true,
"name": "Appendln",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"b": {
"export": true,
"var_type": "[]byte",
"name": "b"
}
},
"return_types": [
"[]byte"
]
},
"errorf": {
"export": true,
"name": "Errorf",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"format": {
"export": true,
"var_type": "string",
"name": "format"
}
},
"return_types": [
"error"
]
},
"formatString": {
"export": true,
"name": "FormatString",
"params": {
"state": {
"export": true,
"var_type": "fmt.State",
"name": "state"
},
"verb": {
"export": true,
"var_type": "rune",
"name": "verb"
}
},
"return_types": [
"string"
]
},
"fprint": {
"export": true,
"name": "Fprint",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"w": {
"export": true,
"var_type": "io.Writer",
"name": "w"
}
},
"return_types": [
"int",
"error"
]
},
"fprintf": {
"export": true,
"name": "Fprintf",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"format": {
"export": true,
"var_type": "string",
"name": "format"
},
"w": {
"export": true,
"var_type": "io.Writer",
"name": "w"
}
},
"return_types": [
"int",
"error"
]
},
"fprintln": {
"export": true,
"name": "Fprintln",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"w": {
"export": true,
"var_type": "io.Writer",
"name": "w"
}
},
"return_types": [
"int",
"error"
]
},
"fscan": {
"export": true,
"name": "Fscan",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"r": {
"export": true,
"var_type": "io.Reader",
"name": "r"
}
},
"return_types": [
"int",
"error"
]
},
"fscanf": {
"export": true,
"name": "Fscanf",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"format": {
"export": true,
"var_type": "string",
"name": "format"
},
"r": {
"export": true,
"var_type": "io.Reader",
"name": "r"
}
},
"return_types": [
"int",
"error"
]
},
"fscanln": {
"export": true,
"name": "Fscanln",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"r": {
"export": true,
"var_type": "io.Reader",
"name": "r"
}
},
"return_types": [
"int",
"error"
]
},
"print": {
"export": true,
"name": "Print",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
}
},
"return_types": [
"int",
"error"
]
},
"printf": {
"export": true,
"name": "Printf",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"format": {
"export": true,
"var_type": "string",
"name": "format"
}
},
"return_types": [
"int",
"error"
]
},
"println": {
"export": true,
"name": "Println",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
}
},
"return_types": [
"int",
"error"
]
},
"scan": {
"export": true,
"name": "Scan",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
}
},
"return_types": [
"int",
"error"
]
},
"scanf": {
"export": true,
"name": "Scanf",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"format": {
"export": true,
"var_type": "string",
"name": "format"
}
},
"return_types": [
"int",
"error"
]
},
"scanln": {
"export": true,
"name": "Scanln",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
}
},
"return_types": [
"int",
"error"
]
},
"sprint": {
"export": true,
"name": "Sprint",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
}
},
"return_types": [
"string"
]
},
"sprintf": {
"export": true,
"name": "Sprintf",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"format": {
"export": true,
"var_type": "string",
"name": "format"
}
},
"return_types": [
"string"
]
},
"sprintln": {
"export": true,
"name": "Sprintln",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
}
},
"return_types": [
"string"
]
},
"sscan": {
"export": true,
"name": "Sscan",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"str": {
"export": true,
"var_type": "string",
"name": "str"
}
},
"return_types": [
"int",
"error"
]
},
"sscanf": {
"export": true,
"name": "Sscanf",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"format": {
"export": true,
"var_type": "string",
"name": "format"
},
"str": {
"export": true,
"var_type": "string",
"name": "str"
}
},
"return_types": [
"int",
"error"
]
},
"sscanln": {
"export": true,
"name": "Sscanln",
"params": {
"a": {
"export": true,
"var_type": "[]any",
"name": "a"
},
"str": {
"export": true,
"var_type": "string",
"name": "str"
}
},
"return_types": [
"int",
"error"
]
}
}
}
}
+6 -4
View File
@@ -1,5 +1,7 @@
export struct MyType { package main;
export x: int,
}
export function test(a: MyType) { } import "fmt";
function main() {
fmt.println("hello");
}