read input from file

This commit is contained in:
Sebastien Bourdeauducq 2020-03-29 13:27:00 +08:00
parent 10fd4d3c27
commit 05ac6fa2c1
2 changed files with 11 additions and 4 deletions

View File

@ -16,6 +16,7 @@ use std::error::Error;
use std::fmt;
use std::path::Path;
use std::collections::HashMap;
use std::fs;
#[derive(Debug)]
enum CompileErrorKind {
@ -54,7 +55,7 @@ struct CompileError {
impl fmt::Display for CompileError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Compilation error at {}: {}", self.location, self.kind)
write!(f, "{}, at {}", self.kind, self.location)
}
}
@ -282,16 +283,20 @@ impl<'ctx> CodeGen<'ctx> {
fn main() {
Target::initialize_all(&InitializationConfig::default());
let ast = match parser::parse_program("def foo(x: int32, y: int32) -> int32: return x + y") {
let program = match fs::read_to_string("test.py") {
Ok(program) => program,
Err(err) => { println!("Cannot open input file: {}", err); return; }
};
let ast = match parser::parse_program(&program) {
Ok(ast) => ast,
Err(err) => { println!("{}", err); return; }
Err(err) => { println!("Parse error: {}", err); return; }
};
let context = Context::create();
let mut codegen = CodeGen::new(&context);
match codegen.compile_toplevel(&ast.statements[0]) {
Ok(_) => (),
Err(err) => { println!("{}", err); return; }
Err(err) => { println!("Compilation error: {}", err); return; }
}
codegen.output();
}

2
test.py Normal file
View File

@ -0,0 +1,2 @@
def foo(x: int32, y: int32) -> int32:
return x + y