pca006132
/
nac3
forked from M-Labs/nac3
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

added symbol resolver...

This commit is contained in:
pca006132 2021-06-28 14:48:04 +08:00
parent 7c9919256c
commit ed04cef431
11 changed files with 108 additions and 119 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
Cargo.lock generated
View File

@ -79,16 +79,6 @@ version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
[[package]]
name = "codespan-reporting"
version = "0.11.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3538270d33cc669650c4b093848450d380def10c331d38c768e34cac80576e6e"
dependencies = [
"termcolor",
"unicode-width",
]
[[package]]
name = "crunchy"
version = "0.2.2"
@ -221,6 +211,15 @@ dependencies = [
"proc-macro-hack",
]
[[package]]
name = "indoc"
version = "1.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e5a75aeaaef0ce18b58056d306c27b07436fbb34b8816c53094b76dd81803136"
dependencies = [
"unindent",
]
[[package]]
name = "indoc-impl"
version = "0.3.6"
@ -383,7 +382,7 @@ checksum = "b16bd47d9e329435e309c58469fe0791c2d0d1ba96ec0954152a5ae2b04387dc"
name = "nac3core"
version = "0.1.0"
dependencies = [
"codespan-reporting",
"indoc 1.0.3",
"inkwell",
"num-bigint 0.3.2",
"num-traits",
@ -600,7 +599,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bf6bbbe8f70d179260b3728e5d04eb012f4f0c7988e58c11433dd689cecaa72e"
dependencies = [
"ctor",
"indoc",
"indoc 0.3.6",
"inventory",
"libc",
"parking_lot",
@ -826,15 +825,6 @@ dependencies = [
"winapi",
]
[[package]]
name = "termcolor"
version = "1.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
dependencies = [
"winapi-util",
]
[[package]]
name = "tiny-keccak"
version = "2.0.2"
@ -896,12 +886,6 @@ dependencies = [
"unic-common",
]
[[package]]
name = "unicode-width"
version = "0.1.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
[[package]]
name = "unicode-xid"
version = "0.2.2"
@ -954,15 +938,6 @@ version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
[[package]]
name = "winapi-util"
version = "0.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
dependencies = [
"winapi",
]
[[package]]
name = "winapi-x86_64-pc-windows-gnu"
version = "0.4.0"

2
nac3core/Cargo.toml
View File

@ -9,5 +9,5 @@ num-bigint = "0.3"
num-traits = "0.2"
inkwell = { git = "https://github.com/TheDan64/inkwell", branch = "master", features = ["llvm10-0"] }
rustpython-parser = { git = "https://github.com/RustPython/RustPython", branch = "master" }
codespan-reporting = "0.11.1"
indoc = "1.0"

1
nac3core/src/lib.rs
View File

@ -4,6 +4,7 @@
extern crate num_bigint;
extern crate inkwell;
extern crate rustpython_parser;
extern crate indoc;
mod typecheck;

35
nac3core/src/typecheck/context/top_level_context.rs → nac3core/src/typecheck/context/global_context.rs
View File

@ -5,7 +5,7 @@ use std::rc::Rc;
/// Structure for storing top-level type definitions.
/// Used for collecting type signature from source code.
/// Can be converted to `InferenceContext` for type inference in functions.
pub struct TopLevelContext<'a> {
pub struct GlobalContext<'a> {
/// List of primitive definitions.
pub(super) primitive_defs: Vec<TypeDef<'a>>,
/// List of class definitions.
@ -16,61 +16,39 @@ pub struct TopLevelContext<'a> {
pub(super) var_defs: Vec<VarDef<'a>>,
/// Function name to signature mapping.
pub(super) fn_table: HashMap<&'a str, FnDef>,
/// Type name to type mapping.
pub(super) sym_table: HashMap<&'a str, Type>,
primitives: Vec<Type>,
variables: Vec<Type>,
}
impl<'a> TopLevelContext<'a> {
pub fn new(primitive_defs: Vec<TypeDef<'a>>) -> TopLevelContext {
let mut sym_table = HashMap::new();
impl<'a> GlobalContext<'a> {
pub fn new(primitive_defs: Vec<TypeDef<'a>>) -> GlobalContext {
let mut primitives = Vec::new();
for (i, t) in primitive_defs.iter().enumerate() {
primitives.push(TypeEnum::PrimitiveType(PrimitiveId(i)).into());
sym_table.insert(t.name, TypeEnum::PrimitiveType(PrimitiveId(i)).into());
}
TopLevelContext {
GlobalContext {
primitive_defs,
class_defs: Vec::new(),
parametric_defs: Vec::new(),
var_defs: Vec::new(),
fn_table: HashMap::new(),
sym_table,
primitives,
variables: Vec::new(),
}
}
pub fn add_class(&mut self, def: ClassDef<'a>) -> ClassId {
self.sym_table.insert(
def.base.name,
TypeEnum::ClassType(ClassId(self.class_defs.len())).into(),
);
self.class_defs.push(def);
ClassId(self.class_defs.len() - 1)
}
pub fn add_parametric(&mut self, def: ParametricDef<'a>) -> ParamId {
let params = def
.params
.iter()
.map(|&v| Rc::new(TypeEnum::TypeVariable(v)))
.collect();
self.sym_table.insert(
def.base.name,
TypeEnum::ParametricType(ParamId(self.parametric_defs.len()), params).into(),
);
self.parametric_defs.push(def);
ParamId(self.parametric_defs.len() - 1)
}
pub fn add_variable(&mut self, def: VarDef<'a>) -> VariableId {
self.sym_table.insert(
def.name,
TypeEnum::TypeVariable(VariableId(self.var_defs.len())).into(),
);
self.add_variable_private(def)
}
@ -128,9 +106,4 @@ impl<'a> TopLevelContext<'a> {
pub fn get_variable(&self, id: VariableId) -> Type {
self.variables.get(id.0).unwrap().clone()
}
pub fn get_type(&self, name: &str) -> Option<Type> {
// TODO: handle parametric types
self.sym_table.get(name).cloned()
}
}

71
nac3core/src/typecheck/context/inference_context.rs
View File

@ -1,22 +1,22 @@
use super::TopLevelContext;
use super::super::symbol_resolver::*;
use super::super::typedef::*;
use super::GlobalContext;
use std::boxed::Box;
use std::collections::HashMap;
struct ContextStack<'a> {
/// stack level, starts from 0
level: u32,
/// stack of variable definitions containing (id, def, level) where `def` is the original
/// definition in `level-1`.
var_defs: Vec<(usize, VarDef<'a>, u32)>,
/// stack of symbol definitions containing (name, level) where `level` is the smallest level
/// where the name is assigned a value
sym_def: Vec<(&'a str, u32)>,
}
pub struct InferenceContext<'a> {
/// top level context
top_level: TopLevelContext<'a>,
/// global context
global: GlobalContext<'a>,
/// per source symbol resolver
resolver: Box<dyn SymbolResolver>,
/// list of primitive instances
primitives: Vec<Type>,
@ -26,8 +26,6 @@ pub struct InferenceContext<'a> {
/// an identifier might be defined earlier but has no value (for some code path), thus not
/// readable.
sym_table: HashMap<&'a str, (Type, bool)>,
/// resolution function reference, that may resolve unbounded identifiers to some type
resolution_fn: Box<dyn FnMut(&str) -> Result<Type, String>>,
/// stack
stack: ContextStack<'a>,
}
@ -35,25 +33,21 @@ pub struct InferenceContext<'a> {
// non-trivial implementations here
impl<'a> InferenceContext<'a> {
/// return a new `InferenceContext` from `TopLevelContext` and resolution function.
pub fn new(
top_level: TopLevelContext,
resolution_fn: Box<dyn FnMut(&str) -> Result<Type, String>>,
) -> InferenceContext {
let primitives = (0..top_level.primitive_defs.len())
pub fn new(global: GlobalContext, resolver: Box<dyn SymbolResolver>) -> InferenceContext {
let primitives = (0..global.primitive_defs.len())
.map(|v| TypeEnum::PrimitiveType(PrimitiveId(v)).into())
.collect();
let variables = (0..top_level.var_defs.len())
let variables = (0..global.var_defs.len())
.map(|v| TypeEnum::TypeVariable(VariableId(v)).into())
.collect();
InferenceContext {
top_level,
global,
resolver,
primitives,
variables,
sym_table: HashMap::new(),
resolution_fn,
stack: ContextStack {
level: 0,
var_defs: Vec::new(),
sym_def: Vec::new(),
},
}
@ -61,7 +55,6 @@ impl<'a> InferenceContext<'a> {
/// execute the function with new scope.
/// variable assignment would be limited within the scope (not readable outside), and type
/// variable type guard would be limited within the scope.
/// returns the list of variables assigned within the scope, and the result of the function
pub fn with_scope<F, R>(&mut self, f: F) -> (Vec<&'a str>, R)
where
@ -70,15 +63,6 @@ impl<'a> InferenceContext<'a> {
self.stack.level += 1;
let result = f(self);
self.stack.level -= 1;
while !self.stack.var_defs.is_empty() {
let (_, _, level) = self.stack.var_defs.last().unwrap();
if *level > self.stack.level {
let (id, def, _) = self.stack.var_defs.pop().unwrap();
self.top_level.var_defs[id] = def;
} else {
break;
}
}
let mut poped_names = Vec::new();
while !self.stack.sym_def.is_empty() {
let (_, level) = self.stack.sym_def.last().unwrap();
@ -126,19 +110,16 @@ impl<'a> InferenceContext<'a> {
if *x {
Ok(t.clone())
} else {
Err("may not have value".into())
Err("unbounded identifier".into())
}
} else {
self.resolution_fn.as_mut()(name)
match self.resolver.get_symbol_type(name) {
Some(SymbolType::Identifier(t)) => Ok(t),
Some(SymbolType::TypeName(_)) => Err("is not a value".into()),
_ => Err("unbounded identifier".into()),
}
}
}
/// restrict the bound of a type variable by replacing its definition.
/// used for implementing type guard
pub fn restrict(&mut self, id: VariableId, mut def: VarDef<'a>) {
std::mem::swap(self.top_level.var_defs.get_mut(id.0).unwrap(), &mut def);
self.stack.var_defs.push((id.0, def, self.stack.level));
}
}
// trivial getters:
@ -151,22 +132,26 @@ impl<'a> InferenceContext<'a> {
}
pub fn get_fn_def(&self, name: &str) -> Option<&FnDef> {
self.top_level.fn_table.get(name)
self.global.fn_table.get(name)
}
pub fn get_primitive_def(&self, id: PrimitiveId) -> &TypeDef {
self.top_level.primitive_defs.get(id.0).unwrap()
self.global.primitive_defs.get(id.0).unwrap()
}
pub fn get_class_def(&self, id: ClassId) -> &ClassDef {
self.top_level.class_defs.get(id.0).unwrap()
self.global.class_defs.get(id.0).unwrap()
}
pub fn get_parametric_def(&self, id: ParamId) -> &ParametricDef {
self.top_level.parametric_defs.get(id.0).unwrap()
self.global.parametric_defs.get(id.0).unwrap()
}
pub fn get_variable_def(&self, id: VariableId) -> &VarDef {
self.top_level.var_defs.get(id.0).unwrap()
self.global.var_defs.get(id.0).unwrap()
}
pub fn get_type(&self, name: &str) -> Option<Type> {
self.top_level.get_type(name)
pub fn get_type(&self, name: &str) -> Result<Type, String> {
match self.resolver.get_symbol_type(name) {
Some(SymbolType::TypeName(t)) => Ok(t),
Some(SymbolType::Identifier(_)) => Err("not a type".into()),
_ => Err("unbounded identifier".into()),
}
}
}

4
nac3core/src/typecheck/context/mod.rs
View File

@ -1,4 +1,4 @@
mod inference_context;
mod top_level_context;
mod global_context;
pub use inference_context::InferenceContext;
pub use top_level_context::TopLevelContext;
pub use global_context::GlobalContext;

4
nac3core/src/typecheck/inference_core.rs
View File

@ -168,11 +168,11 @@ pub fn resolve_call(
#[cfg(test)]
mod tests {
use super::*;
use super::super::context::TopLevelContext;
use super::super::context::GlobalContext;
use super::super::primitives::*;
use std::rc::Rc;
fn get_inference_context(ctx: TopLevelContext) -> InferenceContext {
fn get_inference_context(ctx: GlobalContext) -> InferenceContext {
InferenceContext::new(ctx, Box::new(|_| Err("unbounded identifier".into())))
}

31
nac3core/src/typecheck/location.rs Normal file
View File

@ -0,0 +1,31 @@
use rustpython_parser::ast;
use std::vec::Vec;
#[derive(Clone, Copy, PartialEq)]
pub struct FileID(u32);
#[derive(Clone, Copy, PartialEq)]
pub enum Location {
CodeRange(FileID, ast::Location),
Builtin
}
pub struct FileRegistry {
files: Vec<String>,
}
impl FileRegistry {
pub fn new() -> FileRegistry {
FileRegistry { files: Vec::new() }
}
pub fn add_file(&mut self, path: &str) -> FileID {
let index = self.files.len() as u32;
self.files.push(path.to_owned());
FileID(index)
}
pub fn query_file(&self, id: FileID) -> &str {
&self.files[id.0 as usize]
}
}

5
nac3core/src/typecheck/mod.rs
View File

@ -1,6 +1,7 @@
pub mod context;
pub mod inference_core;
pub mod location;
pub mod magic_methods;
pub mod primitives;
pub mod symbol_resolver;
pub mod typedef;
pub mod context;

4
nac3core/src/typecheck/primitives.rs
View File

@ -78,7 +78,7 @@ fn impl_order(def: &mut TypeDef, ty: &Type) {
def.methods.insert("__ge__", fun);
}
pub fn basic_ctx() -> TopLevelContext<'static> {
pub fn basic_ctx() -> GlobalContext<'static> {
let primitives = [
TypeDef {
name: "bool",
@ -102,7 +102,7 @@ pub fn basic_ctx() -> TopLevelContext<'static> {
},
]
.to_vec();
let mut ctx = TopLevelContext::new(primitives);
let mut ctx = GlobalContext::new(primitives);
let b = ctx.get_primitive(BOOL_TYPE);
let b_def = ctx.get_primitive_def_mut(BOOL_TYPE);

23
nac3core/src/typecheck/symbol_resolver.rs Normal file
View File

@ -0,0 +1,23 @@
use super::typedef::Type;
use super::location::Location;
pub enum SymbolType {
TypeName(Type),
Identifier(Type),
}
pub enum SymbolValue<'a> {
I32(i32),
I64(i64),
Double(f64),
Bool(bool),
Tuple(&'a [SymbolValue<'a>]),
Bytes(&'a [u8]),
}
pub trait SymbolResolver {
fn get_symbol_type(&self, str: &str) -> Option<SymbolType>;
fn get_symbol_value(&self, str: &str) -> Option<SymbolValue>;
fn get_symbol_location(&self, str: &str) -> Option<Location>;
// handle function call etc.
}