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40 lines
1.2 KiB
40 lines
1.2 KiB
use std::borrow::Cow;
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use std::error::Error;
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use thiserror::Error;
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use sexp::SourcePosition;
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use crate::asm::data::{Register};
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use crate::asm::data::literal::Label;
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use crate::asm::instr::Cond;
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/// csn_asm unified error type
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#[derive(Error, Debug)]
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pub enum CrsnError {
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#[error("S-expression parsing error: {0:?}")]
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Sexp(#[from] Box<sexp::Error>),
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#[error("Parse error: {0:?} at {1:?}")]
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Parse(Cow<'static, str>, SourcePosition),
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#[error("Parse error: {0:?} at {1:?}")]
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ParseOther(Box<dyn Error + Send + Sync>, SourcePosition),
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#[error("Assembler error: {0:?} at {1:?}")]
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Asm(AsmError, SourcePosition),
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}
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/// Error from the assembler stage (after parsing S-expressions and basic validation)
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#[derive(Error, Debug)]
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pub enum AsmError {
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#[error("Unknown instruction")]
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UnknownInstruction,
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#[error("Value provided as output argument")]
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ValueAsOutput,
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#[error("Discard (_) provided as input argument")]
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DiscardAsValue,
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#[error("Conditional branch already defined for \"{0}\"")]
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ConditionalAlreadyUsed(Cond),
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#[error("Label \"{0:?}\" not defined")]
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LabelNotDefined(Label),
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#[error("Bad register type: {0}")]
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BadRegisterType(Register),
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}
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