#[non_exhaustive]pub enum QasmSimError<'src> {
UnknownError(String),
InvalidToken {
source: &'src str,
lineno: usize,
startpos: usize,
endpos: Option<usize>,
token: Option<Tok>,
expected: Vec<String>,
},
UnexpectedEOF {
source: &'src str,
lineno: usize,
startpos: usize,
endpos: Option<usize>,
token: Option<Tok>,
expected: Vec<String>,
},
UnexpectedToken {
source: &'src str,
lineno: usize,
startpos: usize,
endpos: Option<usize>,
token: Option<Tok>,
expected: Vec<String>,
},
RedefinitionError {
source: &'src str,
symbol_name: String,
lineno: usize,
previous_lineno: usize,
},
LibraryNotFound {
source: &'src str,
libpath: String,
lineno: usize,
},
IndexOutOfBounds {
source: &'src str,
lineno: usize,
symbol_name: String,
index: usize,
size: usize,
},
SymbolNotFound {
source: &'src str,
lineno: usize,
symbol_name: String,
expected: QasmType,
},
WrongNumberOfParameters {
source: &'src str,
lineno: usize,
symbol_name: String,
are_registers: bool,
given: usize,
expected: usize,
},
UndefinedGate {
source: &'src str,
lineno: usize,
symbol_name: String,
},
TypeMismatch {
source: &'src str,
lineno: usize,
symbol_name: String,
expected: QasmType,
},
RegisterSizeMismatch {
source: &'src str,
lineno: usize,
symbol_name: String,
sizes: Vec<usize>,
},
}Expand description
Types of errors in QasmSim. QasmSim errors contain information about the error and the location in the source code where the error happens.
QasmSimError instances can be printed. They refer to the source code and
try to provide contextual information for fixing the problem.
Conversion between ParseError, RuntimeError and LinkerError is
possible thanks to the trait From is defined for the pair
(&'source str, T) (see alias SrcAndErr) for all the errors listed
above.
§Examples
The error type of simulate() is RuntimeError.
RuntimeError is a sourceless error in the sense it does not relate with
the concrete source code beyond the location in the AST at which the error
happens.
You can use map_err for for capturing the error and converting it
into a QasmSimError from its pairing with the source.
use qasmsim::{QasmSimError, parse_and_link, simulate};
let source = r#"
OPENQASM 2.0;
qreg q[2];
CX q[1], q[2]; // Notice we are indexing out of bounds here.
"#;
let program = parse_and_link(source)?;
let runtime_error = simulate(&program).expect_err("Index out of bounds");
let qasmsim_error = QasmSimError::from((source, runtime_error));Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
UnknownError(String)
A generic unknown error.
InvalidToken
Found an invalid token at some position.
Fields
UnexpectedEOF
Found an unexpected end of file.
Fields
UnexpectedToken
Found an unexpected token.
Fields
RedefinitionError
Found a redefinition of a register.
Fields
LibraryNotFound
The unability of linking a library.
Fields
IndexOutOfBounds
Use of register index that does not fit the register size.
Fields
SymbolNotFound
Use of an unknown/undeclared symbol.
Fields
WrongNumberOfParameters
The attempt of applying an operation passing the wrong number of parameters.
Fields
UndefinedGate
Use of a gate not previously defined.
Fields
TypeMismatch
Found an unexpected type of value.
Fields
RegisterSizeMismatch
Attempt of applying an operation to different sizes registers.
Trait Implementations§
Source§impl<'src> Clone for QasmSimError<'src>
impl<'src> Clone for QasmSimError<'src>
Source§fn clone(&self) -> QasmSimError<'src>
fn clone(&self) -> QasmSimError<'src>
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read more