forked from M-Labs/nac3
process function arguments
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21fc3cf3e8
commit
710d87596a
124
src/main.rs
124
src/main.rs
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@ -1,18 +1,33 @@
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extern crate inkwell;
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extern crate rustpython_parser;
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use rustpython_parser::parser;
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use rustpython_parser::{ast, parser};
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use inkwell::OptimizationLevel;
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use inkwell::builder::Builder;
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use inkwell::context::Context;
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use inkwell::module::Module;
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use inkwell::targets::*;
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use inkwell::passes::PassManager;
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use inkwell::types;
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use crate::inkwell::types::BasicType;
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use std::error::Error;
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use std::fmt;
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use std::path::Path;
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#[derive(Debug)]
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struct CompileError;
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impl fmt::Display for CompileError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "Compilation error")
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}
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}
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impl Error for CompileError {}
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type CompileResult<T> = Result<T, CompileError>;
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struct CodeGen<'ctx> {
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context: &'ctx Context,
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module: Module<'ctx>,
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@ -20,26 +35,90 @@ struct CodeGen<'ctx> {
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}
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impl<'ctx> CodeGen<'ctx> {
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fn compile_sum(&self) {
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fn new(context: &'ctx Context) -> CodeGen<'ctx> {
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CodeGen {
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context,
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module: context.create_module("kernel"),
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builder: context.create_builder()
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}
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}
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fn get_basic_type(&self, name: &str) -> CompileResult<types::BasicTypeEnum<'ctx>> {
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match name {
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"int32" => Ok(self.context.i32_type().into()),
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"int64" => Ok(self.context.i64_type().into()),
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_ => Err(CompileError)
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}
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}
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fn compile_function_def(
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&mut self,
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name: &str,
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args: &ast::Parameters,
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body: &[ast::Statement],
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decorator_list: &[ast::Expression],
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returns: &Option<ast::Expression>,
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is_async: bool,
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) -> CompileResult<()> {
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if is_async {
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return Err(CompileError)
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}
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let args_type = args.args.iter().map(|val| {
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println!("{:?}", val.annotation);
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if let Some(annotation) = &val.annotation {
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if let ast::ExpressionType::Identifier { name } = &annotation.node {
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Ok(self.get_basic_type(&name)?)
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} else {
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Err(CompileError)
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}
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} else {
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Err(CompileError)
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}
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}).collect::<CompileResult<Vec<types::BasicTypeEnum>>>()?;
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let return_type = match returns {
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Some(ast::Located { location, node: ast::ExpressionType::Identifier { name }} )
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=> if name == "None" { None } else { Some(self.get_basic_type(name)?) },
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Some(_) => return Err(CompileError),
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None => None,
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};
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let i64_type = self.context.i64_type();
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let fn_type = i64_type.fn_type(&[i64_type.into(), i64_type.into(), i64_type.into()], false);
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let function = self.module.add_function("sum", fn_type, None);
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let fn_type = match return_type {
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Some(ty) => ty.fn_type(&args_type, false),
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None => self.context.void_type().fn_type(&args_type, false)
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};
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let function = self.module.add_function(name, fn_type, None);
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let basic_block = self.context.append_basic_block(function, "entry");
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self.builder.position_at_end(basic_block);
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let x = function.get_nth_param(0).unwrap().into_int_value();
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let y = function.get_nth_param(1).unwrap().into_int_value();
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let z = function.get_nth_param(2).unwrap().into_int_value();
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let sum = self.builder.build_int_add(x, y, "sum");
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let sum = self.builder.build_int_add(sum, z, "sum");
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self.builder.build_return(Some(&sum));
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Ok(())
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}
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Target::initialize_all(&InitializationConfig::default());
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fn compile_statement(&mut self, statement: &ast::Statement) -> CompileResult<()> {
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use ast::StatementType::*;
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match &statement.node {
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FunctionDef {
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is_async,
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name,
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args,
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body,
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decorator_list,
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returns,
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} => {
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self.compile_function_def(name, args, body, decorator_list, returns, *is_async)?;
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},
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Pass => (),
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_ => return Err(CompileError),
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}
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Ok(())
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}
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//let triple = TargetMachine::get_default_triple();
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fn output(&self) {
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let triple = TargetTriple::create("riscv32-none-linux-gnu");
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let target = Target::from_triple(&triple)
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.expect("couldn't create target from target triple");
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@ -61,19 +140,16 @@ impl<'ctx> CodeGen<'ctx> {
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}
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}
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fn main() -> Result<(), Box<dyn Error>> {
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let context = Context::create();
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let module = context.create_module("sum");
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let codegen = CodeGen {
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context: &context,
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module,
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builder: context.create_builder(),
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};
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codegen.compile_sum();
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Target::initialize_all(&InitializationConfig::default());
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let x = parser::parse_program("def foo(x: int): print('abc')");
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println!("{:?}", x);
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let ast = parser::parse_program("def foo(x: int32, y: int32) -> int32: return x + y")?;
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println!("AST: {:?}", ast);
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let context = Context::create();
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let mut codegen = CodeGen::new(&context);
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codegen.compile_statement(&ast.statements[0])?;
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codegen.output();
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Ok(())
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}
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