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Working on main compiler pipeline 

Got rid of a bunch of confusingly-designed debugging infrastruture.
Need a better way to handle per-stage debug outputs (also I don't want
to be using stages at all long-term)
This commit is contained in:
Greg Shuflin 2021-10-14 00:03:51 -07:00
parent c3131a6d5e
commit 75b1f9cce5
7 changed files with 10 additions and 187 deletions
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10
schala-lang/language/src/debugging.rs
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@ -1,10 +0,0 @@
use crate::ast::*;
impl AST {
pub fn compact_debug(&self) -> String {
format!("{:?}", self)
}
pub fn expanded_debug(&self) -> String {
format!("{:#?}", self)
}
}

4
schala-lang/language/src/eval.rs
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@ -20,10 +20,6 @@ impl<'a> State<'a> {
State { values }
}
pub fn debug_print(&self) -> String {
format!("Values: {:?}", self.values)
}
fn new_frame(&'a self, items: &'a Vec<Node>, bound_vars: &BoundVars) -> State<'a> {
let mut inner_state = State {
values: self.values.new_scope(None),

1
schala-lang/language/src/lib.rs
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@ -24,7 +24,6 @@ macro_rules! bx {
mod util;
#[macro_use]
mod typechecking;
mod debugging;
mod tokenizing;
mod ast;

1
schala-lang/language/src/parsing.rs
View File

@ -267,6 +267,7 @@ impl Parser {
self.program()
}
#[allow(dead_code)]
pub fn format_parse_trace(&self) -> String {
let mut buf = String::new();
buf.push_str("Parse productions:\n");

178
schala-lang/language/src/schala.rs
View File

@ -4,12 +4,10 @@ use std::cell::RefCell;
use std::rc::Rc;
use std::collections::HashSet;
use itertools::Itertools;
use schala_repl::{ProgrammingLanguageInterface,
ComputationRequest, ComputationResponse,
LangMetaRequest, LangMetaResponse, GlobalOutputStats,
DebugResponse, DebugAsk};
use crate::{ast, reduced_ast, tokenizing, parsing, eval, typechecking, symbol_table, source_map};
LangMetaRequest, LangMetaResponse, GlobalOutputStats};
use crate::{reduced_ast, tokenizing, parsing, eval, typechecking, symbol_table, source_map};
pub type SymbolTableHandle = Rc<RefCell<symbol_table::SymbolTable>>;
pub type SourceMapHandle = Rc<RefCell<source_map::SourceMap>>;
@ -99,8 +97,9 @@ impl Schala {
self.resolver.resolve(&mut ast)?;
// Typechecking
let overall_type = self.type_context.typecheck(&ast)
.map_err(|err| format!("Type error: {}", err.msg))?;
// TODO typechecking not working
let _overall_type = self.type_context.typecheck(&ast)
.map_err(|err| format!("Type error: {}", err.msg));
// Reduce AST - this doesn't produce an error yet, but probably should
let symbol_table = self.symbol_table.borrow();
@ -119,31 +118,6 @@ impl Schala {
}
}
fn parsing(input: Vec<tokenizing::Token>, handle: &mut Schala, comp: Option<&mut PassDebugArtifact>) -> Result<ast::AST, String> {
use ParsingDebugType::*;
let ref mut parser = handle.active_parser;
parser.add_new_tokens(input);
let ast = parser.parse();
comp.map(|comp| {
let debug_format = comp.parsing.as_ref().unwrap_or(&CompactAST);
let debug_info = match debug_format {
CompactAST => match ast{
Ok(ref ast) => ast.compact_debug(),
Err(_) => "Error - see output".to_string(),
},
ExpandedAST => match ast{
Ok(ref ast) => ast.expanded_debug(),
Err(_) => "Error - see output".to_string(),
},
Trace => parser.format_parse_trace(),
};
comp.add_artifact(debug_info);
});
ast.map_err(|err| format_parse_error(err, &handle.source_reference))
}
fn format_parse_error(error: parsing::ParseError, source_reference: &SourceReference) -> String {
let line_num = error.token.location.line_num;
let ch = error.token.location.char_num;
@ -167,52 +141,6 @@ fn format_parse_error(error: parsing::ParseError, source_reference: &SourceRefer
)
}
fn symbol_table(input: ast::AST, handle: &mut Schala, comp: Option<&mut PassDebugArtifact>) -> Result<ast::AST, String> {
let () = handle.symbol_table.borrow_mut().add_top_level_symbols(&input)?;
comp.map(|comp| {
let debug = handle.symbol_table.borrow().debug_symbol_table();
comp.add_artifact(debug);
});
Ok(input)
}
fn scope_resolution(mut input: ast::AST, handle: &mut Schala, _com: Option<&mut PassDebugArtifact>) -> Result<ast::AST, String> {
let () = handle.resolver.resolve(&mut input)?;
Ok(input)
}
fn typechecking(input: ast::AST, handle: &mut Schala, comp: Option<&mut PassDebugArtifact>) -> Result<ast::AST, String> {
let result = handle.type_context.typecheck(&input);
comp.map(|comp| {
comp.add_artifact(match result {
Ok(ty) => ty.to_string(),
Err(err) => format!("Type error: {}", err.msg)
});
});
Ok(input)
}
fn ast_reducing(input: ast::AST, handle: &mut Schala, comp: Option<&mut PassDebugArtifact>) -> Result<reduced_ast::ReducedAST, String> {
let ref symbol_table = handle.symbol_table.borrow();
let output = reduced_ast::reduce(&input, symbol_table);
comp.map(|comp| comp.add_artifact(format!("{:?}", output)));
Ok(output)
}
fn eval(input: reduced_ast::ReducedAST, handle: &mut Schala, comp: Option<&mut PassDebugArtifact>) -> Result<String, String> {
comp.map(|comp| comp.add_artifact(handle.state.debug_print()));
let evaluation_outputs = handle.state.evaluate(input, true);
let text_output: Result<Vec<String>, String> = evaluation_outputs
.into_iter()
.collect();
let eval_output: Result<String, String> = text_output
.map(|v| { Iterator::intersperse(v.into_iter(), "\n".to_owned()).collect() });
eval_output
}
/// Represents lines of source code
struct SourceReference {
lines: Option<Vec<String>>
@ -232,24 +160,6 @@ impl SourceReference {
}
}
enum ParsingDebugType {
CompactAST,
ExpandedAST,
Trace
}
#[derive(Default)]
struct PassDebugArtifact {
parsing: Option<ParsingDebugType>,
artifacts: Vec<String>
}
impl PassDebugArtifact {
fn add_artifact(&mut self, artifact: String) {
self.artifacts.push(artifact)
}
}
fn stage_names() -> Vec<&'static str> {
vec![
"tokenizing",
@ -273,7 +183,7 @@ impl ProgrammingLanguageInterface for Schala {
}
fn run_computation(&mut self, request: ComputationRequest) -> ComputationResponse {
let ComputationRequest { source, debug_requests } = request;
let ComputationRequest { source, debug_requests: _ } = request;
self.source_reference.load_new_source(source);
let sw = Stopwatch::start_new();
@ -291,82 +201,6 @@ impl ProgrammingLanguageInterface for Schala {
}
}
// n.b. - old-style, overcomplicated `run_computation`. need to revamp the entire metadata system
/*
fn run_computation(&mut self, request: ComputationRequest) -> ComputationResponse {
struct PassToken<'a> {
schala: &'a mut Schala,
stage_durations: &'a mut Vec<(String, Duration)>,
sw: &'a Stopwatch,
debug_requests: &'a HashSet<DebugAsk>,
debug_responses: &'a mut Vec<DebugResponse>,
}
fn output_wrapper<Input, Output, F>(n: usize, func: F, input: Input, token: &mut PassToken) -> Result<Output, String>
where F: Fn(Input, &mut Schala, Option<&mut PassDebugArtifact>) -> Result<Output, String>
{
let stage_names = stage_names();
let cur_stage_name = stage_names[n];
let ask = token.debug_requests.iter().find(|ask| ask.is_for_stage(cur_stage_name));
let parsing = match ask {
Some(DebugAsk::ByStage { token, .. }) if cur_stage_name == "parsing" => Some(
token.as_ref().map(|token| match &token[..] {
"compact" => ParsingDebugType::CompactAST,
"expanded" => ParsingDebugType::ExpandedAST,
"trace" => ParsingDebugType::Trace,
_ => ParsingDebugType::CompactAST,
}).unwrap_or(ParsingDebugType::CompactAST)
),
_ => None,
};
let mut debug_artifact = ask.map(|_| PassDebugArtifact {
parsing, ..Default::default()
});
let output = func(input, token.schala, debug_artifact.as_mut());
//TODO I think this is not counting the time since the *previous* stage
token.stage_durations.push((cur_stage_name.to_string(), token.sw.elapsed()));
if let Some(artifact) = debug_artifact {
for value in artifact.artifacts.into_iter() {
let resp = DebugResponse { ask: ask.unwrap().clone(), value };
token.debug_responses.push(resp);
}
}
output
}
let ComputationRequest { source, debug_requests } = request;
self.source_reference.load_new_source(source);
let sw = Stopwatch::start_new();
let mut stage_durations = Vec::new();
let mut debug_responses = Vec::new();
let mut tok = PassToken { schala: self, stage_durations: &mut stage_durations, sw: &sw, debug_requests: &debug_requests, debug_responses: &mut debug_responses };
let main_output: Result<String, String> = Ok(source)
.and_then(|source| output_wrapper(0, tokenizing, source, &mut tok))
.and_then(|tokens| output_wrapper(1, parsing, tokens, &mut tok))
.and_then(|ast| output_wrapper(2, symbol_table, ast, &mut tok))
.and_then(|ast| output_wrapper(3, scope_resolution, ast, &mut tok))
.and_then(|ast| output_wrapper(4, typechecking, ast, &mut tok))
.and_then(|ast| output_wrapper(5, ast_reducing, ast, &mut tok))
.and_then(|reduced_ast| output_wrapper(6, eval, reduced_ast, &mut tok));
let total_duration = sw.elapsed();
let global_output_stats = GlobalOutputStats {
total_duration, stage_durations
};
ComputationResponse {
main_output,
global_output_stats,
debug_responses,
}
}
*/
fn request_meta(&mut self, request: LangMetaRequest) -> LangMetaResponse {
match request {
LangMetaRequest::StageNames => LangMetaResponse::StageNames(stage_names().iter().map(|s| s.to_string()).collect()),

1
schala-lang/language/src/symbol_table.rs
View File

@ -242,6 +242,7 @@ impl SymbolTable {
}
Ok(())
}
#[allow(dead_code)]
pub fn debug_symbol_table(&self) -> String {
let mut output = format!("Symbol table\n");
let mut sorted_symbols: Vec<(&FullyQualifiedSymbolName, &Symbol)> = self.symbol_path_to_symbol.iter().collect();

2
schala-lang/language/src/typechecking.rs
View File

@ -77,6 +77,7 @@ pub enum TypeConst {
}
impl TypeConst {
#[allow(dead_code)]
pub fn to_string(&self) -> String {
use self::TypeConst::*;
match self {
@ -107,6 +108,7 @@ macro_rules! ty {
//TODO find a better way to capture the to/from string logic
impl Type {
#[allow(dead_code)]
pub fn to_string(&self) -> String {
use self::Type::*;
match self {