Add functions and a print function
This commit is contained in:
parent
86c2b13d1a
commit
8b60677123
@ -1 +1,3 @@
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print();
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let otus = "Hello, world!";
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let dotus = otus;
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print(dotus);
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@ -2,9 +2,10 @@ use std::collections::HashMap;
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use super::errors::CompilerError;
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use super::parser::{Expression, LiteralPattern, ParsedReid, Pattern, Position, Statement};
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use super::vm::VariableType;
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use super::vm::{BuiltinFunctionDef, FunctionDef, FunctionSignature, VariableType};
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type Variable = (HeapID, VariableType);
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pub type FuncID = usize;
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pub type HeapID = usize;
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pub type RegID = usize;
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@ -18,6 +19,7 @@ pub enum Command {
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AssignVariable(HeapID, RegID), // Assign variable from registery at RegID
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VarToReg(HeapID, RegID), // Bring Variable to registery at RegID
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StringLit(String), // Bring String Literal to Stack
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FunctionCall(FuncID), // Call Function at FuncID
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}
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pub struct Compiler {
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@ -40,11 +42,22 @@ impl Compiler {
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}
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}
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pub fn with_builtin_functions<T: Into<Vec<FunctionSignature>>>(mut self, list: T) -> Compiler {
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self.add_builtin_functions(list.into());
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self
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}
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pub fn compile(mut self) -> Result<CompiledReid, CompilerError> {
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self.handle_expression(self.parsed.0.clone())?;
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Ok(CompiledReid { list: self.list })
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}
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pub fn add_builtin_functions<T: Into<Vec<FunctionSignature>>>(&mut self, list: T) {
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for func in list.into() {
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self.root_scope.add_builtin_function(func);
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}
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}
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fn handle_expression(
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&mut self,
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exp: Expression,
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@ -62,7 +75,26 @@ impl Compiler {
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self.list.push(Command::EndScope);
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Ok(None)
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}
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Expression::FunctionCall(..) => Err(CompilerError::Fatal),
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Expression::FunctionCall(pos, name, args) => {
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let mut arguments = Vec::new();
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for expr in args {
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if let Some(vtype) = self.handle_expression(expr)? {
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arguments.push(vtype);
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} else {
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return Err(CompilerError::CanNotAssignVoidType);
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}
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}
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if let Some(func) = self
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.root_scope
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.find_function(&FunctionSignature::new(name.clone(), arguments.clone()))
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{
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self.list.push(Command::FunctionCall(func.0));
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Ok(None)
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} else {
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Err(CompilerError::FunctionNotFound(pos, name, arguments))
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}
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}
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Expression::ValueRef(_, val) => match val {
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Pattern::IdentPattern(pos, ident) => {
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if let Some(var) = self.root_scope.get(ident.clone()) {
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@ -123,6 +155,7 @@ impl Compiler {
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pub struct Scope {
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counter: HeapID,
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variables: HashMap<String, Variable>,
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functions: Vec<FunctionSignature>,
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inner_scope: Option<Box<Scope>>,
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}
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@ -141,6 +174,25 @@ impl Scope {
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}
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}
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fn find_function(&self, signature: &FunctionSignature) -> Option<(usize, &FunctionSignature)> {
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let mut found = None;
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for (idx, func) in self.functions.iter().enumerate() {
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if func == signature {
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found = Some((idx, func));
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}
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}
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found
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}
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fn add_builtin_function(&mut self, function: FunctionSignature) -> bool {
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if self.find_function(&function).is_some() {
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false
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} else {
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self.functions.push(function);
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true
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}
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}
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fn add_var(
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&mut self,
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pos: Position,
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@ -3,6 +3,8 @@ use std::fmt;
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use std::fmt::Display;
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use std::io;
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use super::vm::VariableType;
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#[derive(Debug)]
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pub enum GenericError {
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StdIOError(io::Error),
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@ -64,6 +66,7 @@ pub enum CompilerError {
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InvalidScopeExit(Position),
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LetFailed(Position, Box<CompilerError>),
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CanNotAssignVoidType,
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FunctionNotFound(Position, String, Vec<VariableType>),
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}
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impl CompilerError {
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@ -92,12 +95,35 @@ impl Display for CompilerError {
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CompilerError::LetFailed(pos, error) => {
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format!("Let statement failed at {}:\n {}", pos, error)
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}
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CompilerError::CanNotAssignVoidType => format!("Can not assign void type to variable"),
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CompilerError::CanNotAssignVoidType => format!("Can not assign void type here"),
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CompilerError::FunctionNotFound(pos, name, params) => format!(
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"Function with signature {}{} not found at {}",
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name,
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ParamList(params.clone()),
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pos
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),
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};
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write!(f, "{}", text)
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}
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}
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struct ParamList(Vec<VariableType>);
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impl Display for ParamList {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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let mut text = String::new();
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text += "(";
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for (idx, vtype) in self.0.iter().enumerate() {
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if idx > 0 {
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text += ", ";
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}
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text += &vtype.to_string();
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}
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text += ")";
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write!(f, "{}", text)
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}
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}
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#[derive(Debug)]
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pub enum RuntimePanic {
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Fatal,
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@ -109,4 +135,5 @@ pub enum RuntimePanic {
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InvalidHeapAddress,
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ValueNotInitialized,
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InvalidTypeAssign,
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InvalidFuncAddress,
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}
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22
src/main.rs
22
src/main.rs
@ -11,7 +11,7 @@ use std::path::Path;
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use compiler::Compiler;
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use parser::Parser;
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use vm::VirtualMachine;
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use vm::{BuiltinFunctionDef, BuiltinFunctions, Value, VariableType, VirtualMachine};
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fn main() {
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let path = Path::new("reid_src/test.reid");
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@ -20,15 +20,29 @@ fn main() {
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eprintln!("Syntax error: {}", error);
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std::process::exit(1);
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}
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dbg!(&parsed);
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let compiled = Compiler::from(parsed.unwrap()).compile();
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//dbg!(&parsed);
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let print = BuiltinFunctionDef::new(
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"print",
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vec![VariableType::TypeString],
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Box::new(move |args| {
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let Value::StringVal(string) = &args[0];
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println!("{}", string);
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}),
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);
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let builtin_functions = BuiltinFunctions(vec![print]);
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let compiled = Compiler::from(parsed.unwrap())
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.with_builtin_functions(builtin_functions.signatures())
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.compile();
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if let Err(error) = compiled {
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eprintln!("Compilation error: {}", error);
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std::process::exit(1);
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}
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dbg!(&compiled);
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//dbg!(&compiled);
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let mut vm = VirtualMachine::from(compiled.unwrap());
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vm.add_builtin_functions(builtin_functions);
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if let Err(error) = vm.run() {
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eprintln!("Runtime panic: {:#?}", error);
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std::process::exit(1);
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@ -257,10 +257,6 @@ impl<'a> Expect<'a> {
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other,
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)
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}
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fn get_expect<T: Into<String>>(&mut self, expectable: Expectable<T>) -> Expect {
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self.parser.expect(expectable)
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}
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}
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pub struct Expects<'a> {
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@ -74,6 +74,7 @@ impl Expression {
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Err(SyntaxError::ExpectedToken(parser.pos(), '}'))
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}
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} else if let Some(texts) = parser.expect_ident().and(Expectable::Static("(")).get() {
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let pos = parser.pos();
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let name = texts.get(0).unwrap();
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let mut arg_list = Vec::new();
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while {
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@ -95,7 +96,6 @@ impl Expression {
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}
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}
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} {}
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let pos = parser.pos();
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parser
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.expect_static(")")
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.get_or(SyntaxError::ExpectedToken(pos, ')'))?;
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101
src/vm/functions.rs
Normal file
101
src/vm/functions.rs
Normal file
@ -0,0 +1,101 @@
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use super::{Value, VariableType};
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#[derive(Debug, Clone)]
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pub struct FunctionSignature {
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pub name: String,
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pub parameters: Vec<VariableType>,
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}
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impl FunctionSignature {
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pub fn new<T: Into<String>>(name: T, params: Vec<VariableType>) -> FunctionSignature {
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FunctionSignature {
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name: name.into(),
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parameters: params,
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}
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}
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}
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impl PartialEq for FunctionSignature {
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fn eq(&self, other: &FunctionSignature) -> bool {
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if self.name == other.name && self.parameters.len() == other.parameters.len() {
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let mut found_difference = false;
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for (idx, t) in self.parameters.iter().enumerate() {
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if other.parameters[idx] != *t {
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found_difference = true;
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}
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}
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!found_difference
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} else {
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false
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}
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}
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}
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impl From<BuiltinFunctionDef> for FunctionSignature {
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fn from(from: BuiltinFunctionDef) -> FunctionSignature {
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from.signature
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}
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}
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pub enum FunctionDef {
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Builtin(BuiltinFunctionDef),
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}
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impl FunctionDef {
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fn get_signature(&self) -> &FunctionSignature {
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match self {
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FunctionDef::Builtin(func) => &func.signature,
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}
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}
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}
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impl PartialEq for FunctionDef {
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fn eq(&self, other: &FunctionDef) -> bool {
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self.get_signature() == other.get_signature()
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}
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}
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impl PartialEq<FunctionSignature> for FunctionDef {
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fn eq(&self, other: &FunctionSignature) -> bool {
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self.get_signature() == other
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}
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}
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pub struct BuiltinFunctionDef {
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pub signature: FunctionSignature,
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pub function: Box<dyn Fn(Vec<Value>)>,
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}
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impl BuiltinFunctionDef {
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pub fn new<T: Into<String>>(
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name: T,
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parameters: Vec<VariableType>,
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func: Box<dyn Fn(Vec<Value>)>,
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) -> BuiltinFunctionDef {
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BuiltinFunctionDef {
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signature: FunctionSignature {
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name: name.into(),
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parameters,
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},
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function: func,
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}
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}
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}
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pub struct BuiltinFunctions(pub Vec<BuiltinFunctionDef>);
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impl BuiltinFunctions {
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pub fn signatures(&self) -> Vec<FunctionSignature> {
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let mut signatures = Vec::new();
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for func in &self.0 {
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signatures.push(func.signature.clone());
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}
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signatures
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}
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}
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impl From<BuiltinFunctions> for Vec<BuiltinFunctionDef> {
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fn from(builtin: BuiltinFunctions) -> Self {
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builtin.0
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}
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}
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@ -1,14 +1,21 @@
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pub mod functions;
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use std::collections::HashMap;
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use std::fmt;
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use std::fmt::Display;
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use super::compiler::{Command, CompiledReid, HeapID};
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use super::errors::RuntimePanic;
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pub use functions::*;
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pub struct VirtualMachine {
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registry_stack: Vec<[Option<Value>; 8]>,
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registry: [Option<Value>; 8],
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stack: Vec<Value>,
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heap: HashMap<HeapID, AllocatedVar>,
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functions: Vec<FunctionDef>,
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position: usize,
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compiled: CompiledReid,
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@ -22,12 +29,19 @@ impl VirtualMachine {
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stack: Vec::new(),
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heap: HashMap::new(),
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functions: Vec::new(),
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position: 0,
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compiled,
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}
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}
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pub fn add_builtin_functions<T: Into<Vec<BuiltinFunctionDef>>>(&mut self, list: T) {
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for func in list.into() {
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self.functions.push(FunctionDef::Builtin(func));
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}
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}
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pub fn run(&mut self) -> Result<(), RuntimePanic> {
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let mut error = None;
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while error.is_none() {
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@ -60,19 +74,19 @@ impl VirtualMachine {
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match command {
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Command::InitializeVariable(heapid, vtype) => {
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self.heap.insert(heapid, AllocatedVar(vtype, None));
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dbg!("Initialized new variable to heap", &self.heap);
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//dbg!("Initialized new variable to heap", &self.heap);
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Ok(())
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}
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Command::BeginScope => {
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self.registry_stack.push(self.registry.clone());
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self.registry = Default::default();
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dbg!("Begun new scope");
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//dbg!("Begun new scope");
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Ok(())
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}
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Command::EndScope => {
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if let Some(reg) = self.registry_stack.pop() {
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self.registry = reg;
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dbg!("Scope ended");
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//dbg!("Scope ended");
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Ok(())
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} else {
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Err(RuntimePanic::ScopeStackUnderflow)
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@ -81,7 +95,7 @@ impl VirtualMachine {
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Command::Pop(regid) => {
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if let Some(val) = self.stack.pop() {
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self.registry[regid] = Some(val);
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dbg!("Registry popped", regid, &self.stack, &self.registry);
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//dbg!("Registry popped", regid, &self.stack, &self.registry);
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Ok(())
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} else {
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Err(RuntimePanic::StackUnderflow)
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@ -91,7 +105,7 @@ impl VirtualMachine {
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if let Some(reg) = &self.registry[regid] {
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if self.stack.len() < usize::MAX {
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self.stack.push(reg.clone());
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dbg!("Registry pushed", regid, &self.stack);
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//dbg!("Registry pushed", regid, &self.stack);
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Ok(())
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} else {
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Err(RuntimePanic::StackOverflow)
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@ -104,7 +118,7 @@ impl VirtualMachine {
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if let Some(reg) = &self.registry[regid] {
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if let Some(var) = self.heap.get_mut(&heapid) {
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var.try_set(Some(reg.clone()))?;
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dbg!("Variable assigned", heapid, regid, &self.heap);
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//dbg!("Variable assigned", heapid, regid, &self.heap);
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Ok(())
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} else {
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Err(RuntimePanic::InvalidHeapAddress)
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@ -117,7 +131,7 @@ impl VirtualMachine {
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if let Some(var) = self.heap.get(&heapid) {
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if let Some(val) = &var.1 {
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self.registry[regid] = Some(val.clone());
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dbg!("Variable pushed to registry", heapid, regid, &self.registry);
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//dbg!("Variable pushed to registry", heapid, regid, &self.registry);
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Ok(())
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} else {
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Err(RuntimePanic::ValueNotInitialized)
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@ -129,12 +143,32 @@ impl VirtualMachine {
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Command::StringLit(string) => {
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if self.stack.len() < usize::MAX {
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self.stack.push(Value::StringVal(string.clone()));
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dbg!("String literal added to stack", string, &self.stack);
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//dbg!("String literal added to stack", string, &self.stack);
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Ok(())
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} else {
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Err(RuntimePanic::StackOverflow)
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}
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}
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Command::FunctionCall(funcid) => {
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if self.functions.len() <= funcid {
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Err(RuntimePanic::InvalidFuncAddress)
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} else {
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match &self.functions[funcid] {
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FunctionDef::Builtin(f) => {
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let mut params = Vec::new();
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for _ in 0..f.signature.parameters.len() {
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if let Some(val) = self.stack.pop() {
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params.push(val);
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} else {
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return Err(RuntimePanic::StackUnderflow);
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}
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}
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(f.function)(params);
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}
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}
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Ok(())
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}
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}
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}
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}
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}
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@ -157,14 +191,8 @@ impl AllocatedVar {
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}
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq, Eq)]
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pub enum VariableType {
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TypeString,
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}
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#[derive(Clone, Debug, PartialEq, Eq)]
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enum Value {
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pub enum Value {
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StringVal(String),
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}
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@ -175,3 +203,16 @@ impl Value {
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}
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq, Eq)]
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pub enum VariableType {
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TypeString,
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}
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impl ToString for VariableType {
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fn to_string(&self) -> String {
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match self {
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VariableType::TypeString => "String".to_string(),
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}
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}
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}
|
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