170 lines
7.2 KiB
Rust
170 lines
7.2 KiB
Rust
use super::{Type, UInstrInst, UInstruction, UProgram};
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use crate::common::{CompilerMsg, CompilerOutput, FileSpan};
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impl UProgram {
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pub fn validate(&self, output: &mut CompilerOutput) {
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for (id, f) in self.iter_fns() {
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self.validate_fn(
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&f.instructions,
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self.origins.get(id),
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&f.ret,
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output,
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true,
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false,
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);
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}
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}
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pub fn validate_fn(
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&self,
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instructions: &[UInstrInst],
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origin: FileSpan,
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ret: &Type,
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output: &mut CompilerOutput,
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needs_ret: bool,
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breakable: bool,
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) {
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let mut no_ret = true;
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for i in instructions {
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match &i.i {
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UInstruction::Mv { dst: dest, src } => {
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let dest = self.expect(dest.id);
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let src = self.expect(src.id);
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output.check_assign(self, &src.ty, &dest.ty, i.origin);
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}
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UInstruction::Ref { dst: dest, src } => {
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let dest = self.expect(dest.id);
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let src = self.expect(src.id);
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output.check_assign(self, &src.ty.clone().rf(), &dest.ty, i.origin);
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}
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UInstruction::LoadData { dst: dest, src } => {
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let dest = self.expect(dest.id);
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let src = self.expect(*src);
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output.check_assign(self, &src.ty, &dest.ty, i.origin);
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}
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UInstruction::LoadSlice { dst: dest, src } => {
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let dest = self.expect(dest.id);
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let src = self.expect(*src);
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let Type::Array(srcty, ..) = &src.ty else {
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todo!()
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};
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output.check_assign(self, &Type::Slice(srcty.clone()), &dest.ty, i.origin);
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}
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UInstruction::LoadFn { dst: dest, src } => todo!(),
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UInstruction::Call { dst: dest, f, args } => {
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let destty = &self.expect(dest.id).ty;
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let f = self.expect(f.id);
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let Type::Fn { args: argtys, ret } = &f.ty else {
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output.err(CompilerMsg {
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msg: format!("Type {} is not callable", self.type_name(&f.ty)),
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spans: vec![dest.origin],
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});
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continue;
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};
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output.check_assign(self, ret, destty, dest.origin);
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if args.len() != argtys.len() {
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output.err(CompilerMsg {
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msg: "Wrong number of arguments to function".to_string(),
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spans: vec![dest.origin],
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});
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}
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for (dst_ty, src) in argtys.iter().zip(args) {
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let src_var = self.expect(src.id);
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output.check_assign(self, &src_var.ty, dst_ty, src.origin);
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}
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}
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UInstruction::AsmBlock { instructions, args } => {
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for arg in args {
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// TODO: validate size with enabled targets
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// maybe should happen in lowering? but I think it could happen here
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// if let Some(size) = self.size_of_var(arg.var.id)
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// && size != 64
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// {
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// output.err(CompilerMsg {
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// msg: format!("asm block args must be size 64, is size {}", size),
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// spans: vec![arg.var.span],
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// });
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// }
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}
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}
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UInstruction::Ret { src } => {
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let srcty = &self.expect(src.id).ty;
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output.check_assign(self, srcty, ret, src.origin);
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no_ret = false;
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}
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UInstruction::Construct { dst: dest, fields } => {
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let dest_def = self.expect(dest.id);
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let sty = match &dest_def.ty {
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Type::Struct(sty) => sty,
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_ => {
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output.err(CompilerMsg {
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msg: format!(
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"Type {} cannot be constructed",
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self.type_name(&dest_def.ty)
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),
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spans: vec![dest.origin],
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});
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continue;
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}
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};
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let def = self.expect(sty.id);
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for (name, field) in &def.fields {
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if let Some(var) = fields.get(name) {
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let mut fty = &field.ty;
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if let Type::Generic { id } = fty {
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for (g, a) in def.generics.iter().zip(&sty.args) {
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if *g == *id {
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fty = a;
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}
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}
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}
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let ety = &self.expect(var.id).ty;
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output.check_assign(self, ety, fty, var.origin);
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} else {
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output.err(CompilerMsg {
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msg: format!("field '{}' missing from struct", name),
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spans: vec![dest.origin],
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});
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}
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}
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}
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UInstruction::If { cond, body } => {
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let cond = self.expect(cond.id);
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output.check_assign(self, &cond.ty, &Type::Bits(64), i.origin);
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self.validate_fn(body, origin, ret, output, false, breakable);
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}
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UInstruction::Loop { body } => {
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self.validate_fn(body, origin, ret, output, false, true);
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}
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UInstruction::Break => {
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if !breakable {
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output.err(CompilerMsg {
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msg: "Can't break here (outside of loop)".to_string(),
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spans: vec![i.origin],
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});
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}
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// TODO
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}
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UInstruction::Continue => {
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if !breakable {
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output.err(CompilerMsg {
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msg: "Can't continue here (outside of loop)".to_string(),
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spans: vec![i.origin],
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});
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}
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// TODO
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}
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}
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}
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if needs_ret && no_ret && *ret != Type::Unit {
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output.err(CompilerMsg {
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msg: format!(
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"Function implicitly returns () at the end, must return {}",
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self.type_name(ret)
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),
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spans: vec![origin],
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});
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}
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}
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}
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