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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,24 +1,157 @@ | ||
| use super::parser::IrStmt; | ||
| use std::collections::HashMap; | ||
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| use crate::Obj::Linkage; | ||
| use crate::IR::{Const, FnTy, FunctionType, Type, TypeMetadata, Var}; | ||
|
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| use crate::prelude::ir::*; | ||
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| use super::parser::{IrStmt, IrBlock}; | ||
| use super::lexer::Loc; | ||
| use super::IrError; | ||
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| /// semantic analaysiz for ir stmts | ||
| #[derive(Debug, Clone, PartialEq, Eq)] | ||
| pub struct IrSemnatic<'a> { | ||
| input: &'a Vec<IrStmt>, | ||
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| const_sigs: HashMap<String, Linkage>, | ||
| func_sigs: HashMap<String, (FunctionType, Linkage)>, | ||
| } | ||
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| impl<'a> IrSemnatic<'a> { | ||
| /// Creates an new ir semnatic analyzizer | ||
| pub fn new(exprs: &'a Vec<IrStmt>) -> Self { | ||
| Self { | ||
| input: exprs, | ||
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| const_sigs: HashMap::new(), | ||
| func_sigs: HashMap::new(), | ||
| } | ||
| } | ||
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| /// verifys the input | ||
| pub fn verify(&mut self) -> Result<(), IrError> { | ||
| todo!(); | ||
| for stmt in self.input { | ||
| match stmt { | ||
| IrStmt::Func { name, ret, args, body: _, scope, location } => self.add_func(name, *ret, args, scope, location)?, | ||
| IrStmt::Const { name, data: _, location, scope } => self.add_const(name, scope, location)? | ||
| } | ||
| } | ||
|
|
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| for stmt in self.input { | ||
| match stmt { | ||
| IrStmt::Func { name, ret, args, body, scope, location } => self.analizye_func(name, *ret, args, body, *scope, location)?, | ||
| IrStmt::Const { name, data, location, scope } => self.analyize_const(name, data, location, *scope)?, | ||
| } | ||
| } | ||
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| Ok(()) | ||
| } | ||
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| fn add_func(&mut self, name: &String, ret: TypeMetadata, args: &(HashMap<String, TypeMetadata>, bool), scope: &Linkage, loc: &Loc) -> Result<(), IrError> { | ||
| if self.func_sigs.contains_key(name) { | ||
| Err(IrError::DefinedTwice { | ||
| loc: loc.clone(), | ||
| name: name.to_owned() | ||
| })? | ||
| } | ||
|
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| let mut fun_args = vec![]; | ||
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| for (_, arg) in &args.0 { | ||
| fun_args.push( *arg ); | ||
| } | ||
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| let ty = FnTy(fun_args, ret); | ||
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| self.func_sigs.insert(name.to_owned(), (ty, *scope)); | ||
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| Ok(()) | ||
| } | ||
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| fn add_const(&mut self, name: &String, scope: &Linkage, loc: &Loc) -> Result<(), IrError> { | ||
| if self.func_sigs.contains_key(name) { | ||
| Err(IrError::DefinedTwice { | ||
| loc: loc.clone(), | ||
| name: name.to_owned() | ||
| })? | ||
| } | ||
|
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| self.const_sigs.insert(name.to_owned(), *scope); | ||
| Ok(()) | ||
| } | ||
|
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| fn analizye_func(&mut self, name: &String, ret: TypeMetadata, args: &(HashMap<String, TypeMetadata>, bool), body: &HashMap<String, IrBlock>, scope: Linkage, loc: &Loc) -> Result<(), IrError> { | ||
| let mut vars = HashMap::new(); | ||
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| let mut blocks = vec![]; | ||
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| for (name, ty) in &args.0 { | ||
| vars.insert(name.to_owned(), *ty); | ||
| } | ||
|
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| if Linkage::Extern == scope && body.len() > 0 { | ||
| Err(IrError::ExternFunWithBody { | ||
| name: name.to_owned(), | ||
| loc: loc.to_owned(), | ||
| })? | ||
| } | ||
|
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| for (name, block) in body { | ||
| if blocks.contains(name) { | ||
| Err(IrError::DefinedTwice { | ||
| loc: block.loc.to_owned(), | ||
| name: name.to_owned() | ||
| })? | ||
| } | ||
|
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| blocks.push(name.to_owned()); | ||
|
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| for node in &block.body { | ||
| let instr = &node.inst; | ||
| let loc = node.loc.to_owned(); | ||
|
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| let any = instr.as_any(); | ||
|
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| if let Some(node) = any.downcast_ref::<Return<Type>>() { | ||
| self.analiyze_ret_int(node, ret, loc)?; | ||
| } else if let Some(node) = any.downcast_ref::<Assign<Var, Const>>() { | ||
| self.analiyze_assign_const(node, loc)?; | ||
| } | ||
| } | ||
| } | ||
|
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| Ok(()) | ||
| } | ||
|
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| fn analiyze_ret_int(&mut self, node: &Return<Type>, fsig: TypeMetadata, loc: Loc) -> Result<(), IrError> { | ||
| let ret: TypeMetadata = node.inner1.into(); | ||
|
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| if ret != fsig { | ||
| Err(IrError::FuncWrongReturnTyoe { | ||
| expected: fsig, | ||
| found: ret, | ||
| loc: loc, | ||
| })? | ||
| } | ||
|
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| Ok(()) | ||
| } | ||
|
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| fn analiyze_assign_const(&mut self, node: &Assign<Var, Const>, loc: Loc) -> Result<(), IrError> { | ||
| let name = &node.inner2.name; | ||
| if !self.const_sigs.contains_key(name) { | ||
| Err(IrError::Unkown { | ||
| what: "const".to_owned(), | ||
| loc: loc, | ||
| name: name.to_owned(), | ||
| })? | ||
| } | ||
|
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| Ok(()) | ||
| } | ||
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| //Ok(()) | ||
| fn analyize_const(&mut self, _: &String, _: &Vec<u8>, _: &Loc, _: Linkage) -> Result<(), IrError> { | ||
| Ok(()) // what can go wrong on constants? | ||
| } | ||
| } | ||
| } |
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