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use nu_protocol::hir::*;
use nu_protocol::UnspannedPathMember;
use nu_source::{Spanned, SpannedItem};
pub fn expression_to_flat_shape(e: &SpannedExpression) -> Vec<Spanned<FlatShape>> {
match &e.expr {
Expression::Block(exprs) => shapes(exprs),
Expression::Subexpression(exprs) => shapes(exprs),
Expression::FilePath(_) => vec![FlatShape::Path.spanned(e.span)],
Expression::Garbage => vec![FlatShape::Garbage.spanned(e.span)],
Expression::List(exprs) => {
let mut output = vec![];
for expr in exprs.iter() {
output.append(&mut expression_to_flat_shape(expr));
}
output
}
Expression::Table(headers, cells) => {
let mut output = vec![];
for header in headers.iter() {
output.append(&mut expression_to_flat_shape(header));
}
for row in cells {
for cell in row {
output.append(&mut expression_to_flat_shape(cell));
}
}
output
}
Expression::FullColumnPath(exprs) => {
let mut output = vec![];
output.append(&mut expression_to_flat_shape(&exprs.head));
for member in exprs.tail.iter() {
if let UnspannedPathMember::String(_) = &member.unspanned {
output.push(FlatShape::StringMember.spanned(member.span));
}
}
output
}
Expression::Command => vec![FlatShape::InternalCommand.spanned(e.span)],
Expression::Literal(Literal::Bare(_)) => vec![FlatShape::BareMember.spanned(e.span)],
Expression::Literal(Literal::ColumnPath(_)) => vec![FlatShape::Path.spanned(e.span)],
Expression::Literal(Literal::GlobPattern(_)) => {
vec![FlatShape::GlobPattern.spanned(e.span)]
}
Expression::Literal(Literal::Number(_)) => vec![FlatShape::Int.spanned(e.span)],
Expression::Literal(Literal::Operator(_)) => vec![FlatShape::Operator.spanned(e.span)],
Expression::Literal(Literal::Size(number, unit)) => vec![FlatShape::Size {
number: number.span,
unit: unit.span,
}
.spanned(e.span)],
Expression::Literal(Literal::String(_)) => vec![FlatShape::String.spanned(e.span)],
Expression::ExternalWord => vec![FlatShape::ExternalWord.spanned(e.span)],
Expression::ExternalCommand(_) => vec![FlatShape::ExternalCommand.spanned(e.span)],
Expression::Synthetic(_) => vec![FlatShape::BareMember.spanned(e.span)],
Expression::Variable(_, _) => vec![FlatShape::Variable.spanned(e.span)],
Expression::Binary(binary) => {
let mut output = vec![];
output.append(&mut expression_to_flat_shape(&binary.left));
output.append(&mut expression_to_flat_shape(&binary.op));
output.append(&mut expression_to_flat_shape(&binary.right));
output
}
Expression::Range(range) => {
let mut output = vec![];
if let Some(left) = &range.left {
output.append(&mut expression_to_flat_shape(left));
}
output.push(
match &range.operator.item {
RangeOperator::Inclusive => FlatShape::DotDot,
RangeOperator::RightExclusive => FlatShape::DotDotLeftAngleBracket,
}
.spanned(&range.operator.span),
);
if let Some(right) = &range.right {
output.append(&mut expression_to_flat_shape(right));
}
output
}
Expression::Boolean(_) => vec![FlatShape::Keyword.spanned(e.span)],
}
}
pub fn shapes(commands: &Block) -> Vec<Spanned<FlatShape>> {
let mut output = vec![];
for group in &commands.block {
for pipeline in &group.pipelines {
for command in &pipeline.list {
match command {
ClassifiedCommand::Internal(internal) => {
output.append(&mut expression_to_flat_shape(&internal.args.head));
if let Some(positionals) = &internal.args.positional {
for positional_arg in positionals {
output.append(&mut expression_to_flat_shape(positional_arg));
}
}
if let Some(named) = &internal.args.named {
for (_, named_arg) in named.iter() {
match named_arg {
NamedValue::PresentSwitch(span) => {
output.push(FlatShape::Flag.spanned(*span));
}
NamedValue::Value(span, expr) => {
output.push(FlatShape::Flag.spanned(*span));
output.append(&mut expression_to_flat_shape(expr));
}
_ => {}
}
}
}
}
ClassifiedCommand::Expr(expr) => {
output.append(&mut expression_to_flat_shape(expr))
}
ClassifiedCommand::Dynamic(call) => {
output.append(&mut expression_to_flat_shape(&call.head));
if let Some(positionals) = &call.positional {
for positional_arg in positionals {
output.append(&mut expression_to_flat_shape(positional_arg));
}
}
if let Some(named) = &call.named {
for (_, named_arg) in named.iter() {
match named_arg {
NamedValue::PresentSwitch(span) => {
output.push(FlatShape::Flag.spanned(*span));
}
NamedValue::Value(span, expr) => {
output.push(FlatShape::Flag.spanned(*span));
output.append(&mut expression_to_flat_shape(expr));
}
_ => {}
}
}
}
}
_ => {}
}
}
}
}
output
}