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added the compiler

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This commit is contained in:
Andrew Segavac
2020-04-13 23:59:01 -06:00
parent 76c539cf5c
commit 084765744c
7 changed files with 321 additions and 16 deletions
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147
Cargo.lock generated
View File

@@ -102,6 +102,7 @@ dependencies = [
name = "boring-lang"
version = "0.1.0"
dependencies = [
"inkwell 0.1.0 (git+https://github.com/TheDan64/inkwell?branch=llvm7-0)",
"lalrpop 0.18.1 (registry+https://github.com/rust-lang/crates.io-index)",
"lalrpop-util 0.18.1 (registry+https://github.com/rust-lang/crates.io-index)",
"regex 1.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -117,6 +118,11 @@ name = "byteorder"
version = "1.3.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cc"
version = "1.0.50"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cfg-if"
version = "0.1.10"
@@ -233,6 +239,30 @@ dependencies = [
"libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "inkwell"
version = "0.1.0"
source = "git+https://github.com/TheDan64/inkwell?branch=llvm7-0#6929dadf09adb4b0458285999e33b0f6b173ce8e"
dependencies = [
"either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
"inkwell_internals 0.1.0 (git+https://github.com/TheDan64/inkwell?branch=llvm7-0)",
"libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
"llvm-sys 70.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"once_cell 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
"parking_lot 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
"regex 1.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "inkwell_internals"
version = "0.1.0"
source = "git+https://github.com/TheDan64/inkwell?branch=llvm7-0#6929dadf09adb4b0458285999e33b0f6b173ce8e"
dependencies = [
"proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
"quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
"syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "itertools"
version = "0.8.2"
@@ -283,6 +313,26 @@ name = "libc"
version = "0.2.68"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "llvm-sys"
version = "70.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)",
"lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
"regex 1.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
"semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "lock_api"
version = "0.3.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"scopeguard 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "log"
version = "0.4.8"
@@ -301,6 +351,11 @@ name = "new_debug_unreachable"
version = "1.0.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "once_cell"
version = "1.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "opaque-debug"
version = "0.2.3"
@@ -311,6 +366,28 @@ name = "ordermap"
version = "0.3.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "parking_lot"
version = "0.10.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"lock_api 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
"parking_lot_core 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "parking_lot_core"
version = "0.7.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
"cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)",
"redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
"smallvec 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "petgraph"
version = "0.4.13"
@@ -342,6 +419,14 @@ name = "precomputed-hash"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "proc-macro2"
version = "0.4.30"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "proc-macro2"
version = "1.0.10"
@@ -350,6 +435,14 @@ dependencies = [
"unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "quote"
version = "0.6.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "quote"
version = "1.0.3"
@@ -504,6 +597,24 @@ dependencies = [
"crossbeam-utils 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "scopeguard"
version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "semver"
version = "0.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "semver-parser"
version = "0.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "serde"
version = "1.0.106"
@@ -538,6 +649,11 @@ name = "siphasher"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "smallvec"
version = "1.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "string_cache"
version = "0.7.5"
@@ -574,6 +690,16 @@ name = "strsim"
version = "0.9.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "syn"
version = "0.15.44"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
"quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
"unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "syn"
version = "1.0.17"
@@ -607,6 +733,11 @@ name = "typenum"
version = "1.11.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "unicode-xid"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "unicode-xid"
version = "0.2.0"
@@ -653,6 +784,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum block-padding 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "fa79dedbb091f449f1f39e53edf88d5dbe95f895dae6135a8d7b881fb5af73f5"
"checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
"checksum byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
"checksum cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)" = "95e28fa049fda1c330bcf9d723be7663a899c4679724b34c81e9f5a326aab8cd"
"checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
"checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
"checksum constant_time_eq 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
@@ -669,21 +801,30 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
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"checksum hermit-abi 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "725cf19794cf90aa94e65050cb4191ff5d8fa87a498383774c47b332e3af952e"
"checksum inkwell 0.1.0 (git+https://github.com/TheDan64/inkwell?branch=llvm7-0)" = "<none>"
"checksum inkwell_internals 0.1.0 (git+https://github.com/TheDan64/inkwell?branch=llvm7-0)" = "<none>"
"checksum itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f56a2d0bc861f9165be4eb3442afd3c236d8a98afd426f65d92324ae1091a484"
"checksum lalrpop 0.18.1 (registry+https://github.com/rust-lang/crates.io-index)" = "de5e019883a6e9734d093f34216a3857160c6bc2a9a1ec196a177aaa737c74af"
"checksum lalrpop-util 0.18.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7d6e9bc1801eb54529fd6a020aaf9514e8193bb6b42d96d0fe7da99187efa93d"
"checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
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"checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
"checksum quote 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2bdc6c187c65bca4260c9011c9e3132efe4909da44726bad24cf7572ae338d7f"
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@@ -701,18 +842,24 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum regex 1.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "7f6946991529684867e47d86474e3a6d0c0ab9b82d5821e314b1ede31fa3a4b3"
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1
Cargo.toml
View File

@@ -13,3 +13,4 @@ features = ["lexer"]
[dependencies]
lalrpop-util = "0.18.1"
regex = "1"
inkwell = { git = "https://github.com/TheDan64/inkwell", branch = "llvm7-0" }

1
Dockerfile
View File

@@ -1,3 +1,4 @@
FROM rust:1.39
RUN apt update && apt-get install -y llvm clang
WORKDIR /code

26
src/ast.rs
View File

@@ -5,19 +5,19 @@ pub enum Operator {
Div,
Plus,
Minus,
Gt,
Gte,
Lt,
Lte,
Eq,
Mod,
Exp,
FloorDiv,
// Gt,
// Gte,
// Lt,
// Lte,
// Eq,
// Mod,
// Exp,
// FloorDiv,
}
pub struct LiteralInt {
pub value: i32
pub value: i64
}
// pub struct LiteralString {
@@ -28,9 +28,15 @@ pub struct Identifier {
pub name: String
}
pub struct FunctionCall {
pub name: Identifier,
pub arguments: Vec<Box<Expression>>,
}
pub enum Expression {
LiteralInt(LiteralInt),
// LiteralString(LiteralString),
FunctionCall(FunctionCall),
Identifier(Identifier),
Op(Box<Expression>, Operator, Box<Expression>),
}
@@ -58,6 +64,6 @@ pub struct Function {
// }
pub struct Program {
pub struct Module {
pub functions: Vec<Function>,
}

125
src/compiler.rs Normal file
View File

@@ -0,0 +1,125 @@
use std::collections::HashMap;
use std::mem;
use std::convert::TryInto;
use inkwell::builder::Builder;
use inkwell::context::Context;
use inkwell::module::Module;
use inkwell::values::{BasicValueEnum, FunctionValue, IntValue};
use crate::ast;
type Scope<'ctx> = HashMap<String, BasicValueEnum<'ctx>>;
pub struct ModuleCodeGen<'ctx> {
context: &'ctx Context,
module: Module<'ctx>,
builder: Builder<'ctx>,
scope: Scope<'ctx>,
}
impl<'ctx> ModuleCodeGen<'ctx> {
pub fn new(context: &'ctx Context, name: String) -> Self {
return ModuleCodeGen{
context: context,
module: context.create_module(&name),
builder: context.create_builder(),
scope: Scope::new(),
}
}
pub fn gen_literal_int(&mut self, literal_int: ast::LiteralInt) -> IntValue<'ctx> {
self.context.i64_type().const_int(unsafe { mem::transmute::<i64, u64>(literal_int.value) }, true)
}
pub fn gen_op_expression(&mut self, scope: &Scope<'ctx>, lhs: Box<ast::Expression>, op: ast::Operator, rhs: Box<ast::Expression>) -> IntValue<'ctx> {
let lhs_result = self.gen_expression(scope, lhs);
let rhs_result = self.gen_expression(scope, rhs);
self.gen_op_int(lhs_result, rhs_result, op)
}
pub fn gen_op_int(&mut self, lhs: IntValue<'ctx>, rhs: IntValue<'ctx>, op: ast::Operator) -> IntValue<'ctx> {
match op {
ast::Operator::Plus => self.builder.build_int_add(lhs, rhs, "add"),
ast::Operator::Minus => self.builder.build_int_sub(lhs, rhs, "sub"),
ast::Operator::Mul => self.builder.build_int_mul(lhs, rhs, "mul"),
ast::Operator::Div => self.builder.build_int_signed_div(lhs, rhs, "div"),
}
}
pub fn gen_expression(&mut self, scope: &Scope<'ctx>, expression: Box<ast::Expression>) -> IntValue<'ctx> {
match *expression {
ast::Expression::LiteralInt(literal_int) => self.gen_literal_int(literal_int),
ast::Expression::Identifier(identifier) => {
match scope[&identifier.name] {
BasicValueEnum::IntValue(value) => value,
_ => panic!("function returned type other than int, no types yet"),
}
},
ast::Expression::FunctionCall(function_call) => self.gen_function_call(scope, function_call),
ast::Expression::Op(lhs, op, rhs) => self.gen_op_expression(scope, lhs, op, rhs),
}
}
pub fn gen_function_call(&mut self, scope: &Scope<'ctx>, function_call: ast::FunctionCall) -> IntValue<'ctx> {
println!("Calling function: {}", &function_call.name.name);
let fn_value = self.module.get_function(&function_call.name.name).unwrap();
let mut arguments = Vec::new();
for expression in function_call.arguments.into_iter() {
arguments.push(BasicValueEnum::IntValue(self.gen_expression(scope, expression)));
}
let result = self.builder.build_call(fn_value, &arguments, &function_call.name.name)
.try_as_basic_value()
.left()
.unwrap();
match result {
BasicValueEnum::IntValue(value) => value,
_ => panic!("function returned type other than int, no types yet"),
}
}
// Generates a FunctionValue for an `ast::Function`. This does not genereate a body,
// that task is left to the `gen_function` function. The reason this is split
// between two functions is that first all signatures are generated and then all bodies. This
// allows bodies to reference `FunctionValue` wherever they are declared in the file.
pub fn gen_signature(&mut self, function: &ast::Function) -> FunctionValue {
let mut args = Vec::new();
for _ in &function.arguments {
args.push(self.context.i64_type().into());
}
let fn_type = self.context.i64_type().fn_type(&args, false);
println!("Adding function: {}", &function.name.name);
let fn_value = self.module.add_function(&function.name.name, fn_type, None);
fn_value
}
pub fn gen_function(&mut self, function: ast::Function) {
let fn_value = self.module.get_function(&function.name.name).unwrap();
let basic_block = self.context.append_basic_block(fn_value, "entry");
self.builder.position_at_end(basic_block);
let mut scope = self.scope.clone();
for (i, param) in function.arguments.into_iter().enumerate() {
scope.insert(param.name.name, fn_value.get_nth_param(i.try_into().unwrap()).unwrap());
}
let body = function.block;
let return_value = self.gen_expression(&scope, body.expression);
self.builder.build_return(Some(&return_value));
}
pub fn gen_module(&mut self, module: ast::Module) {
// generate all signatures before the fuction bodies
for function in &module.functions {
self.gen_signature(&function);
}
for function in module.functions {
self.gen_function(function);
}
}
pub fn dump(&self) -> String {
self.module.print_to_string().to_string()
}
}

11
src/grammar.lalrpop
View File

@@ -6,13 +6,17 @@ grammar;
pub LiteralInt: ast::LiteralInt = {
r"[0-9]+" => ast::LiteralInt{value: i32::from_str(<>).unwrap()}
r"[0-9]+" => ast::LiteralInt{value: i64::from_str(<>).unwrap()}
};
pub Identifier: ast::Identifier = {
r"[A-Za-z][A-Za-z0-9_]*" => ast::Identifier{name: <>.to_string()}
};
pub FunctionCall: ast::FunctionCall = {
<i:Identifier> "(" <args:Comma<Expression>> ")" => ast::FunctionCall{name:i, arguments: args}
}
pub Expression: Box<ast::Expression> = {
<l:Expression> "+" <r:Factor> => Box::new(ast::Expression::Op(l, ast::Operator::Plus, r)),
<l:Expression> "-" <r:Factor> => Box::new(ast::Expression::Op(l, ast::Operator::Minus, r)),
@@ -28,6 +32,7 @@ pub Factor: Box<ast::Expression> = {
pub Term: Box<ast::Expression> = {
LiteralInt => Box::new(ast::Expression::LiteralInt(<>)),
Identifier => Box::new(ast::Expression::Identifier(<>)),
<FunctionCall> => Box::new(ast::Expression::FunctionCall(<>)),
"(" <Expression> ")",
}
@@ -44,8 +49,8 @@ pub Function: ast::Function = {
}
pub Program: ast::Program = {
<fs:Function*> => ast::Program{functions: fs}
pub Module: ast::Module = {
<fs:Function*> => ast::Module{functions: fs}
}

26
src/main.rs
View File

@@ -3,8 +3,26 @@ mod ast;
lalrpop_mod!(pub grammar); // synthesized by LALRPOP
mod compiler;
use inkwell::context::Context;
fn main() {
println!("Hello, world!");
let module_ast = grammar::ModuleParser::new().parse("
fn add(a, b) {
a + b
}
fn subtract(a, b) {
a - b
}
fn main() {
add(4, subtract(5, 2))
}
").unwrap();
let context = Context::create();
let mut code_gen = compiler::ModuleCodeGen::new(&context, "main".to_string());
code_gen.gen_module(module_ast);
println!("{}", code_gen.dump());
}
@@ -32,6 +50,8 @@ fn grammar() {
assert!(grammar::FunctionParser::new().parse("fn add(a, b) { a + }").is_err());
assert!(grammar::FunctionParser::new().parse("fn add(a, b)").is_err());
assert!(grammar::ProgramParser::new().parse("fn add(a, b) { a + b }").is_ok());
assert!(grammar::ProgramParser::new().parse("fn add(a, b) { a + b } fn subtract(a, b) { a - b }").is_ok());
assert!(grammar::FunctionCallParser::new().parse("foo(1, 2)").is_ok());
assert!(grammar::ModuleParser::new().parse("fn add(a, b) { a + b }").is_ok());
assert!(grammar::ModuleParser::new().parse("fn add(a, b) { a + b } fn subtract(a, b) { a - b }").is_ok());
}