sv-parser/sv-parser-parser/src/expressions/expression_leftside_values.rs
2019-07-26 12:58:28 +09:00

90 lines
2.7 KiB
Rust

use crate::*;
// -----------------------------------------------------------------------------
#[packrat_parser]
#[parser]
pub(crate) fn net_lvalue(s: Span) -> IResult<Span, NetLvalue> {
alt((net_lvalue_identifier, net_lvalue_lvalue, net_lvalue_pattern))(s)
}
#[parser]
pub(crate) fn net_lvalue_identifier(s: Span) -> IResult<Span, NetLvalue> {
let (s, a) = ps_or_hierarchical_net_identifier(s)?;
let (s, b) = constant_select(s)?;
Ok((
s,
NetLvalue::Identifier(Box::new(NetLvalueIdentifier { nodes: (a, b) })),
))
}
#[parser]
pub(crate) fn net_lvalue_pattern(s: Span) -> IResult<Span, NetLvalue> {
let (s, a) = opt(assignment_pattern_expression_type)(s)?;
let (s, b) = assignment_pattern_net_lvalue(s)?;
Ok((
s,
NetLvalue::Pattern(Box::new(NetLvaluePattern { nodes: (a, b) })),
))
}
#[parser]
pub(crate) fn net_lvalue_lvalue(s: Span) -> IResult<Span, NetLvalue> {
let (s, a) = brace(list(symbol(","), net_lvalue))(s)?;
Ok((
s,
NetLvalue::Lvalue(Box::new(NetLvalueLvalue { nodes: (a,) })),
))
}
#[packrat_parser]
#[parser]
pub(crate) fn variable_lvalue(s: Span) -> IResult<Span, VariableLvalue> {
alt((
variable_lvalue_identifier,
variable_lvalue_lvalue,
variable_lvalue_pattern,
map(streaming_concatenation, |x| {
VariableLvalue::StreamingConcatenation(Box::new(x))
}),
))(s)
}
#[parser]
pub(crate) fn variable_lvalue_identifier(s: Span) -> IResult<Span, VariableLvalue> {
let (s, a) = opt(implicit_class_handle_or_package_scope)(s)?;
let (s, b) = hierarchical_variable_identifier(s)?;
let (s, c) = select(s)?;
Ok((
s,
VariableLvalue::Identifier(Box::new(VariableLvalueIdentifier { nodes: (a, b, c) })),
))
}
#[parser]
pub(crate) fn variable_lvalue_pattern(s: Span) -> IResult<Span, VariableLvalue> {
let (s, a) = opt(assignment_pattern_expression_type)(s)?;
let (s, b) = assignment_pattern_variable_lvalue(s)?;
Ok((
s,
VariableLvalue::Pattern(Box::new(VariableLvaluePattern { nodes: (a, b) })),
))
}
#[parser]
pub(crate) fn variable_lvalue_lvalue(s: Span) -> IResult<Span, VariableLvalue> {
let (s, a) = brace(list(symbol(","), variable_lvalue))(s)?;
Ok((
s,
VariableLvalue::Lvalue(Box::new(VariableLvalueLvalue { nodes: (a,) })),
))
}
#[parser]
pub(crate) fn nonrange_variable_lvalue(s: Span) -> IResult<Span, NonrangeVariableLvalue> {
let (s, a) = opt(implicit_class_handle_or_package_scope)(s)?;
let (s, b) = hierarchical_variable_identifier(s)?;
let (s, c) = nonrange_select(s)?;
Ok((s, NonrangeVariableLvalue { nodes: (a, b, c) }))
}