115 lines
3.3 KiB
Rust
115 lines
3.3 KiB
Rust
#![feature(slice_patterns, box_patterns, box_syntax)]
|
|
#![feature(proc_macro)]
|
|
extern crate itertools;
|
|
#[macro_use]
|
|
extern crate lazy_static;
|
|
#[macro_use]
|
|
extern crate maplit;
|
|
|
|
#[macro_use]
|
|
extern crate schala_repl;
|
|
extern crate schala_codegen;
|
|
|
|
use itertools::Itertools;
|
|
use schala_repl::{ProgrammingLanguageInterface, EvalOptions, TraceArtifact, UnfinishedComputation, FinishedComputation};
|
|
|
|
macro_rules! bx {
|
|
($e:expr) => { Box::new($e) }
|
|
}
|
|
|
|
mod builtin;
|
|
|
|
mod tokenizing;
|
|
mod parsing;
|
|
mod typechecking;
|
|
mod eval;
|
|
|
|
use self::typechecking::{TypeContext};
|
|
|
|
pub struct Schala {
|
|
state: eval::State<'static>,
|
|
type_context: TypeContext
|
|
}
|
|
|
|
impl Schala {
|
|
pub fn new() -> Schala {
|
|
Schala {
|
|
state: eval::State::new(),
|
|
type_context: TypeContext::new(),
|
|
}
|
|
}
|
|
}
|
|
|
|
fn tokenizing_stage(_handle: &mut Schala, input: &str, comp: Option<&mut UnfinishedComputation>) -> Result<Vec<tokenizing::Token>, ()> {
|
|
let tokens = tokenizing::tokenize(input);
|
|
comp.map(|comp| {
|
|
let token_string = tokens.iter().map(|t| format!("{:?}<L:{},C:{}>", t.token_type, t.offset.0, t.offset.1)).join(", ");
|
|
comp.add_artifact(TraceArtifact::new("tokens", token_string));
|
|
});
|
|
Ok(tokenizing::tokenize(input))
|
|
}
|
|
|
|
fn parsing_stage(_handle: &mut Schala, input: Vec<tokenizing::Token>, comp: Option<&mut UnfinishedComputation>) -> Result<parsing::AST, parsing::ParseError> {
|
|
|
|
let (ast, trace) = parsing::parse(input);
|
|
comp.map(|comp| {
|
|
//TODO need to control which of these debug stages get added
|
|
comp.add_artifact(TraceArtifact::new_parse_trace(trace));
|
|
comp.add_artifact(TraceArtifact::new("ast", format!("{:#?}", ast)));
|
|
});
|
|
ast
|
|
}
|
|
|
|
fn symbol_table_stage(handle: &mut Schala, input: parsing::AST, comp: Option<&mut UnfinishedComputation>) -> Result<parsing::AST, String> {
|
|
match handle.type_context.add_top_level_types(&input) {
|
|
Ok(()) => {
|
|
let text = handle.type_context.debug_symbol_table();
|
|
comp.map(|comp| comp.add_artifact(TraceArtifact::new("symbol_table", text)));
|
|
Ok(input)
|
|
},
|
|
Err(msg) => Err(msg)
|
|
}
|
|
}
|
|
|
|
fn typechecking_stage(handle: &mut Schala, input: parsing::AST, comp: Option<&mut UnfinishedComputation>) -> Result<parsing::AST, String> {
|
|
match handle.type_context.type_check_ast(&input) {
|
|
Ok(ty) => {
|
|
comp.map(|comp| comp.add_artifact(TraceArtifact::new("type_check", format!("{:?}", ty))));
|
|
Ok(input)
|
|
},
|
|
Err(msg) => Err(msg)
|
|
}
|
|
}
|
|
|
|
fn eval_stage(handle: &mut Schala, input: parsing::AST, comp: Option<&mut UnfinishedComputation>) -> Result<String, String> {
|
|
let evaluation_outputs = handle.state.evaluate(input);
|
|
let text_output: Result<Vec<String>, String> = evaluation_outputs
|
|
.into_iter()
|
|
.collect();
|
|
|
|
let eval_output: Result<String, String> = text_output
|
|
.map(|v| { v.into_iter().intersperse(format!("\n")).collect() });
|
|
eval_output
|
|
}
|
|
|
|
impl ProgrammingLanguageInterface for Schala {
|
|
fn get_language_name(&self) -> String {
|
|
"Schala".to_string()
|
|
}
|
|
|
|
fn get_source_file_suffix(&self) -> String {
|
|
format!("schala")
|
|
}
|
|
|
|
fn execute_pipeline(&mut self, input: &str, options: &EvalOptions) -> FinishedComputation {
|
|
let mut chain = pass_chain![self, options;
|
|
tokenizing_stage,
|
|
parsing_stage,
|
|
symbol_table_stage,
|
|
typechecking_stage,
|
|
eval_stage
|
|
];
|
|
chain(input)
|
|
}
|
|
}
|