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nushell/crates/nu-protocol/src/value/mod.rs
WindSoilder 4f7f6a2932
Friendly error message for access beyond end (#6944) 
Adds `ShellError::AccessEmptyContent`
2022-10-29 19:47:50 +02:00

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Rust
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mod custom_value;
mod from;
mod from_value;
mod range;
mod stream;
mod unit;
use crate::ast::Operator;
use crate::ast::{CellPath, PathMember};
use crate::ShellError;
use crate::{did_you_mean, BlockId, Config, Span, Spanned, Type, VarId};
use byte_unit::ByteUnit;
use chrono::{DateTime, Duration, FixedOffset};
use chrono_humanize::HumanTime;
pub use custom_value::CustomValue;
use fancy_regex::Regex;
pub use from_value::FromValue;
use indexmap::map::IndexMap;
use nu_utils::get_system_locale;
use num_format::ToFormattedString;
pub use range::*;
use serde::{Deserialize, Serialize};
use std::{
borrow::Cow,
collections::HashMap,
fmt::{Display, Formatter, Result as FmtResult},
iter,
path::PathBuf,
{cmp::Ordering, fmt::Debug},
};
pub use stream::*;
pub use unit::*;
/// Core structured values that pass through the pipeline in Nushell.
// NOTE: Please do not reorder these enum cases without thinking through the
// impact on the PartialOrd implementation and the global sort order
#[derive(Debug, Serialize, Deserialize)]
pub enum Value {
Bool {
val: bool,
span: Span,
},
Int {
val: i64,
span: Span,
},
Float {
val: f64,
span: Span,
},
Filesize {
val: i64,
span: Span,
},
Duration {
val: i64,
span: Span,
},
Date {
val: DateTime<FixedOffset>,
span: Span,
},
Range {
val: Box<Range>,
span: Span,
},
String {
val: String,
span: Span,
},
Record {
cols: Vec<String>,
vals: Vec<Value>,
span: Span,
},
List {
vals: Vec<Value>,
span: Span,
},
Block {
val: BlockId,
captures: HashMap<VarId, Value>,
span: Span,
},
Nothing {
span: Span,
},
Error {
error: ShellError,
},
Binary {
val: Vec<u8>,
span: Span,
},
CellPath {
val: CellPath,
span: Span,
},
CustomValue {
val: Box<dyn CustomValue>,
span: Span,
},
}
impl Clone for Value {
fn clone(&self) -> Self {
match self {
Value::Bool { val, span } => Value::Bool {
val: *val,
span: *span,
},
Value::Int { val, span } => Value::Int {
val: *val,
span: *span,
},
Value::Filesize { val, span } => Value::Filesize {
val: *val,
span: *span,
},
Value::Duration { val, span } => Value::Duration {
val: *val,
span: *span,
},
Value::Date { val, span } => Value::Date {
val: *val,
span: *span,
},
Value::Range { val, span } => Value::Range {
val: val.clone(),
span: *span,
},
Value::Float { val, span } => Value::Float {
val: *val,
span: *span,
},
Value::String { val, span } => Value::String {
val: val.clone(),
span: *span,
},
Value::Record { cols, vals, span } => Value::Record {
cols: cols.clone(),
vals: vals.clone(),
span: *span,
},
Value::List { vals, span } => Value::List {
vals: vals.clone(),
span: *span,
},
Value::Block {
val,
captures,
span,
} => Value::Block {
val: *val,
captures: captures.clone(),
span: *span,
},
Value::Nothing { span } => Value::Nothing { span: *span },
Value::Error { error } => Value::Error {
error: error.clone(),
},
Value::Binary { val, span } => Value::Binary {
val: val.clone(),
span: *span,
},
Value::CellPath { val, span } => Value::CellPath {
val: val.clone(),
span: *span,
},
Value::CustomValue { val, span } => val.clone_value(*span),
}
}
}
impl Value {
/// Converts into string values that can be changed into string natively
pub fn as_string(&self) -> Result<String, ShellError> {
match self {
Value::Int { val, .. } => Ok(val.to_string()),
Value::Float { val, .. } => Ok(val.to_string()),
Value::String { val, .. } => Ok(val.to_string()),
Value::Binary { val, .. } => Ok(match std::str::from_utf8(val) {
Ok(s) => s.to_string(),
Err(_) => {
// println!("{:?}", e);
// println!("bytes: {}", pretty_hex::pretty_hex(&val));
// panic!("let's see it");
return Err(ShellError::CantConvert(
"string".into(),
"binary".into(),
self.span()?,
None,
));
}
}),
x => Err(ShellError::CantConvert(
"string".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_spanned_string(&self) -> Result<Spanned<String>, ShellError> {
match self {
Value::String { val, span } => Ok(Spanned {
item: val.to_string(),
span: *span,
}),
Value::Binary { val, span } => Ok(match std::str::from_utf8(val) {
Ok(s) => Spanned {
item: s.to_string(),
span: *span,
},
Err(_) => {
return Err(ShellError::CantConvert(
"string".into(),
"binary".into(),
self.span()?,
None,
))
}
}),
x => Err(ShellError::CantConvert(
"string".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_path(&self) -> Result<PathBuf, ShellError> {
match self {
Value::String { val, .. } => Ok(PathBuf::from(val)),
x => Err(ShellError::CantConvert(
"path".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_block(&self) -> Result<BlockId, ShellError> {
match self {
Value::Block { val, .. } => Ok(*val),
x => Err(ShellError::CantConvert(
"block".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_binary(&self) -> Result<&[u8], ShellError> {
match self {
Value::Binary { val, .. } => Ok(val),
Value::String { val, .. } => Ok(val.as_bytes()),
x => Err(ShellError::CantConvert(
"binary".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_record(&self) -> Result<(&[String], &[Value]), ShellError> {
match self {
Value::Record { cols, vals, .. } => Ok((cols, vals)),
x => Err(ShellError::CantConvert(
"record".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_list(&self) -> Result<&[Value], ShellError> {
match self {
Value::List { vals, .. } => Ok(vals),
x => Err(ShellError::CantConvert(
"list".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_bool(&self) -> Result<bool, ShellError> {
match self {
Value::Bool { val, .. } => Ok(*val),
x => Err(ShellError::CantConvert(
"boolean".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_float(&self) -> Result<f64, ShellError> {
match self {
Value::Float { val, .. } => Ok(*val),
Value::Int { val, .. } => Ok(*val as f64),
x => Err(ShellError::CantConvert(
"float".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
pub fn as_integer(&self) -> Result<i64, ShellError> {
match self {
Value::Int { val, .. } => Ok(*val),
x => Err(ShellError::CantConvert(
"integer".into(),
x.get_type().to_string(),
self.span()?,
None,
)),
}
}
/// Get the span for the current value
pub fn span(&self) -> Result<Span, ShellError> {
match self {
Value::Error { error } => Err(error.clone()),
Value::Bool { span, .. } => Ok(*span),
Value::Int { span, .. } => Ok(*span),
Value::Float { span, .. } => Ok(*span),
Value::Filesize { span, .. } => Ok(*span),
Value::Duration { span, .. } => Ok(*span),
Value::Date { span, .. } => Ok(*span),
Value::Range { span, .. } => Ok(*span),
Value::String { span, .. } => Ok(*span),
Value::Record { span, .. } => Ok(*span),
Value::List { span, .. } => Ok(*span),
Value::Block { span, .. } => Ok(*span),
Value::Nothing { span, .. } => Ok(*span),
Value::Binary { span, .. } => Ok(*span),
Value::CellPath { span, .. } => Ok(*span),
Value::CustomValue { span, .. } => Ok(*span),
}
}
/// Update the value with a new span
pub fn with_span(mut self, new_span: Span) -> Value {
match &mut self {
Value::Bool { span, .. } => *span = new_span,
Value::Int { span, .. } => *span = new_span,
Value::Float { span, .. } => *span = new_span,
Value::Filesize { span, .. } => *span = new_span,
Value::Duration { span, .. } => *span = new_span,
Value::Date { span, .. } => *span = new_span,
Value::Range { span, .. } => *span = new_span,
Value::String { span, .. } => *span = new_span,
Value::Record { span, .. } => *span = new_span,
Value::List { span, .. } => *span = new_span,
Value::Block { span, .. } => *span = new_span,
Value::Nothing { span, .. } => *span = new_span,
Value::Error { .. } => {}
Value::Binary { span, .. } => *span = new_span,
Value::CellPath { span, .. } => *span = new_span,
Value::CustomValue { span, .. } => *span = new_span,
}
self
}
/// Get the type of the current Value
pub fn get_type(&self) -> Type {
match self {
Value::Bool { .. } => Type::Bool,
Value::Int { .. } => Type::Int,
Value::Float { .. } => Type::Float,
Value::Filesize { .. } => Type::Filesize,
Value::Duration { .. } => Type::Duration,
Value::Date { .. } => Type::Date,
Value::Range { .. } => Type::Range,
Value::String { .. } => Type::String,
Value::Record { cols, vals, .. } => Type::Record(
cols.iter()
.zip(vals.iter())
.map(|(x, y)| (x.clone(), y.get_type()))
.collect(),
),
Value::List { vals, .. } => {
let mut ty = None;
for val in vals {
let val_ty = val.get_type();
match &ty {
Some(x) => {
if &val_ty != x {
ty = Some(Type::Any)
}
}
None => ty = Some(val_ty),
}
}
match ty {
Some(Type::Record(columns)) => Type::Table(columns),
Some(ty) => Type::List(Box::new(ty)),
None => Type::List(Box::new(ty.unwrap_or(Type::Any))),
}
}
Value::Nothing { .. } => Type::Nothing,
Value::Block { .. } => Type::Block,
Value::Error { .. } => Type::Error,
Value::Binary { .. } => Type::Binary,
Value::CellPath { .. } => Type::CellPath,
Value::CustomValue { val, .. } => Type::Custom(val.typetag_name().into()),
}
}
pub fn get_data_by_key(&self, name: &str) -> Option<Value> {
match self {
Value::Record { cols, vals, .. } => cols
.iter()
.zip(vals.iter())
.find(|(col, _)| col == &name)
.map(|(_, val)| val.clone()),
Value::List { vals, span } => {
let mut out = vec![];
for item in vals {
match item {
Value::Record { .. } => match item.get_data_by_key(name) {
Some(v) => out.push(v),
None => out.push(Value::nothing(*span)),
},
_ => out.push(Value::nothing(*span)),
}
}
if !out.is_empty() {
Some(Value::List {
vals: out,
span: *span,
})
} else {
None
}
}
_ => None,
}
}
/// Convert Value into string. Note that Streams will be consumed.
pub fn into_string(&self, separator: &str, config: &Config) -> String {
match self {
Value::Bool { val, .. } => val.to_string(),
Value::Int { val, .. } => val.to_string(),
Value::Float { val, .. } => val.to_string(),
Value::Filesize { val, .. } => format_filesize_from_conf(*val, config),
Value::Duration { val, .. } => format_duration(*val),
Value::Date { val, .. } => format!("{} ({})", val.to_rfc2822(), HumanTime::from(*val)),
Value::Range { val, .. } => {
format!(
"{}..{}",
val.from.into_string(", ", config),
val.to.into_string(", ", config)
)
}
Value::String { val, .. } => val.clone(),
Value::List { vals: val, .. } => format!(
"[{}]",
val.iter()
.map(|x| x.into_string(", ", config))
.collect::<Vec<_>>()
.join(separator)
),
Value::Record { cols, vals, .. } => format!(
"{{{}}}",
cols.iter()
.zip(vals.iter())
.map(|(x, y)| format!("{}: {}", x, y.into_string(", ", config)))
.collect::<Vec<_>>()
.join(separator)
),
Value::Block { val, .. } => format!("<Block {}>", val),
Value::Nothing { .. } => String::new(),
Value::Error { error } => format!("{:?}", error),
Value::Binary { val, .. } => format!("{:?}", val),
Value::CellPath { val, .. } => val.into_string(),
Value::CustomValue { val, .. } => val.value_string(),
}
}
/// Convert Value into string. Note that Streams will be consumed.
pub fn into_abbreviated_string(&self, config: &Config) -> String {
match self {
Value::Bool { val, .. } => val.to_string(),
Value::Int { val, .. } => val.to_string(),
Value::Float { val, .. } => val.to_string(),
Value::Filesize { val, .. } => format_filesize_from_conf(*val, config),
Value::Duration { val, .. } => format_duration(*val),
Value::Date { val, .. } => HumanTime::from(*val).to_string(),
Value::Range { val, .. } => {
format!(
"{}..{}",
val.from.into_string(", ", config),
val.to.into_string(", ", config)
)
}
Value::String { val, .. } => val.to_string(),
Value::List { ref vals, .. } => match &vals[..] {
[Value::Record { .. }, _end @ ..] => format!(
"[table {} row{}]",
vals.len(),
if vals.len() == 1 { "" } else { "s" }
),
_ => format!(
"[list {} item{}]",
vals.len(),
if vals.len() == 1 { "" } else { "s" }
),
},
Value::Record { cols, .. } => format!(
"{{record {} field{}}}",
cols.len(),
if cols.len() == 1 { "" } else { "s" }
),
Value::Block { val, .. } => format!("<Block {}>", val),
Value::Nothing { .. } => String::new(),
Value::Error { error } => format!("{:?}", error),
Value::Binary { val, .. } => format!("{:?}", val),
Value::CellPath { val, .. } => val.into_string(),
Value::CustomValue { val, .. } => val.value_string(),
}
}
/// Convert Value into a debug string
pub fn debug_value(&self) -> String {
format!("{:#?}", self)
}
/// Convert Value into string. Note that Streams will be consumed.
pub fn debug_string(&self, separator: &str, config: &Config) -> String {
match self {
Value::Bool { val, .. } => val.to_string(),
Value::Int { val, .. } => val.to_string(),
Value::Float { val, .. } => val.to_string(),
Value::Filesize { val, .. } => format_filesize_from_conf(*val, config),
Value::Duration { val, .. } => format_duration(*val),
Value::Date { val, .. } => format!("{:?}", val),
Value::Range { val, .. } => {
format!(
"{}..{}",
val.from.into_string(", ", config),
val.to.into_string(", ", config)
)
}
Value::String { val, .. } => val.clone(),
Value::List { vals: val, .. } => format!(
"[{}]",
val.iter()
.map(|x| x.into_string(", ", config))
.collect::<Vec<_>>()
.join(separator)
),
Value::Record { cols, vals, .. } => format!(
"{{{}}}",
cols.iter()
.zip(vals.iter())
.map(|(x, y)| format!("{}: {}", x, y.into_string(", ", config)))
.collect::<Vec<_>>()
.join(separator)
),
Value::Block { val, .. } => format!("<Block {}>", val),
Value::Nothing { .. } => String::new(),
Value::Error { error } => format!("{:?}", error),
Value::Binary { val, .. } => format!("{:?}", val),
Value::CellPath { val, .. } => val.into_string(),
Value::CustomValue { val, .. } => val.value_string(),
}
}
/// Check if the content is empty
pub fn is_empty(&self) -> bool {
match self {
Value::String { val, .. } => val.is_empty(),
Value::List { vals, .. } => vals.is_empty(),
Value::Record { cols, .. } => cols.is_empty(),
Value::Binary { val, .. } => val.is_empty(),
Value::Nothing { .. } => true,
_ => false,
}
}
pub fn is_nothing(&self) -> bool {
matches!(self, Value::Nothing { .. })
}
/// Create a new `Nothing` value
pub fn nothing(span: Span) -> Value {
Value::Nothing { span }
}
/// Follow a given column path into the value: for example accessing select elements in a stream or list
pub fn follow_cell_path(
self,
cell_path: &[PathMember],
insensitive: bool,
) -> Result<Value, ShellError> {
self.follow_cell_path_helper(cell_path, insensitive, true)
}
pub fn follow_cell_path_not_from_user_input(
self,
cell_path: &[PathMember],
insensitive: bool,
) -> Result<Value, ShellError> {
self.follow_cell_path_helper(cell_path, insensitive, false)
}
fn follow_cell_path_helper(
self,
cell_path: &[PathMember],
insensitive: bool,
from_user_input: bool,
) -> Result<Value, ShellError> {
let mut current = self;
for member in cell_path {
// FIXME: this uses a few extra clones for simplicity, but there may be a way
// to traverse the path without them
match member {
PathMember::Int {
val: count,
span: origin_span,
} => {
// Treat a numeric path member as `select <val>`
match &mut current {
Value::List { vals: val, .. } => {
if let Some(item) = val.get(*count) {
current = item.clone();
} else if val.is_empty() {
return Err(ShellError::AccessEmptyContent(*origin_span))
} else {
return Err(ShellError::AccessBeyondEnd(val.len() - 1, *origin_span));
}
}
Value::Binary { val, .. } => {
if let Some(item) = val.get(*count) {
current = Value::Int {
val: *item as i64,
span: *origin_span,
};
} else if val.is_empty() {
return Err(ShellError::AccessEmptyContent(*origin_span))
} else {
return Err(ShellError::AccessBeyondEnd(val.len() - 1, *origin_span));
}
}
Value::Range { val, .. } => {
if let Some(item) = val.clone().into_range_iter(None)?.nth(*count) {
current = item.clone();
} else {
return Err(ShellError::AccessBeyondEndOfStream(*origin_span));
}
}
Value::CustomValue { val, .. } => {
current = val.follow_path_int(*count, *origin_span)?;
}
x => {
return Err(ShellError::TypeMismatchGenericMessage {
err_message: format!("Can't access {} values with a row index. Try specifying a column name instead", x.get_type().to_shape()),
span: *origin_span, })
}
}
}
PathMember::String {
val: column_name,
span: origin_span,
} => match &mut current {
Value::Record { cols, vals, span } => {
let cols = cols.clone();
let span = *span;
// Make reverse iterate to avoid duplicate column leads to first value, actuall last value is expected.
if let Some(found) = cols.iter().zip(vals.iter()).rev().find(|x| {
if insensitive {
x.0.to_lowercase() == column_name.to_lowercase()
} else {
x.0 == column_name
}
}) {
current = found.1.clone();
} else {
if from_user_input {
if let Some(suggestion) = did_you_mean(&cols, column_name) {
return Err(ShellError::DidYouMean(suggestion, *origin_span));
}
}
return Err(ShellError::CantFindColumn(*origin_span, span));
}
}
Value::List { vals, span } => {
let mut output = vec![];
let mut hasvalue = false;
let mut temp: Result<Value, ShellError> = Err(ShellError::NotFound(*span));
for val in vals {
temp = val.clone().follow_cell_path(
&[PathMember::String {
val: column_name.clone(),
span: *origin_span,
}],
insensitive,
);
if let Ok(result) = temp.clone() {
hasvalue = true;
output.push(result);
} else {
output.push(Value::Nothing { span: *span });
}
}
if hasvalue {
current = Value::List {
vals: output,
span: *span,
};
} else {
return temp;
}
}
Value::CustomValue { val, .. } => {
current = val.follow_path_string(column_name.clone(), *origin_span)?;
}
x => {
return Err(ShellError::IncompatiblePathAccess(
format!("{}", x.get_type()),
*origin_span,
))
}
},
}
}
Ok(current)
}
/// Follow a given column path into the value: for example accessing select elements in a stream or list
pub fn upsert_cell_path(
&mut self,
cell_path: &[PathMember],
callback: Box<dyn FnOnce(&Value) -> Value>,
) -> Result<(), ShellError> {
let orig = self.clone();
let new_val = callback(&orig.follow_cell_path(cell_path, false)?);
match new_val {
Value::Error { error } => Err(error),
new_val => self.upsert_data_at_cell_path(cell_path, new_val),
}
}
pub fn upsert_data_at_cell_path(
&mut self,
cell_path: &[PathMember],
new_val: Value,
) -> Result<(), ShellError> {
match cell_path.first() {
Some(path_member) => match path_member {
PathMember::String {
val: col_name,
span,
} => match self {
Value::List { vals, .. } => {
for val in vals.iter_mut() {
match val {
Value::Record { cols, vals, .. } => {
let mut found = false;
for col in cols.iter().zip(vals.iter_mut()) {
if col.0 == col_name {
found = true;
col.1.upsert_data_at_cell_path(
&cell_path[1..],
new_val.clone(),
)?
}
}
if !found {
if cell_path.len() == 1 {
cols.push(col_name.clone());
vals.push(new_val);
break;
} else {
let mut new_col = Value::Record {
cols: vec![],
vals: vec![],
span: new_val.span()?,
};
new_col.upsert_data_at_cell_path(
&cell_path[1..],
new_val,
)?;
vals.push(new_col);
break;
}
}
}
v => return Err(ShellError::CantFindColumn(*span, v.span()?)),
}
}
}
Value::Record { cols, vals, .. } => {
let mut found = false;
for col in cols.iter().zip(vals.iter_mut()) {
if col.0 == col_name {
found = true;
col.1
.upsert_data_at_cell_path(&cell_path[1..], new_val.clone())?
}
}
if !found {
if cell_path.len() == 1 {
cols.push(col_name.clone());
vals.push(new_val);
} else {
let mut new_col = Value::Record {
cols: vec![],
vals: vec![],
span: new_val.span()?,
};
new_col.upsert_data_at_cell_path(&cell_path[1..], new_val)?;
vals.push(new_col);
}
}
}
v => return Err(ShellError::CantFindColumn(*span, v.span()?)),
},
PathMember::Int { val: row_num, span } => match self {
Value::List { vals, .. } => {
if let Some(v) = vals.get_mut(*row_num) {
v.upsert_data_at_cell_path(&cell_path[1..], new_val)?
} else if vals.is_empty() {
return Err(ShellError::AccessEmptyContent(*span));
} else {
return Err(ShellError::AccessBeyondEnd(vals.len() - 1, *span));
}
}
v => return Err(ShellError::NotAList(*span, v.span()?)),
},
},
None => {
*self = new_val;
}
}
Ok(())
}
/// Follow a given column path into the value: for example accessing select elements in a stream or list
pub fn update_cell_path(
&mut self,
cell_path: &[PathMember],
callback: Box<dyn FnOnce(&Value) -> Value>,
) -> Result<(), ShellError> {
let orig = self.clone();
let new_val = callback(&orig.follow_cell_path(cell_path, false)?);
match new_val {
Value::Error { error } => Err(error),
new_val => self.update_data_at_cell_path(cell_path, new_val),
}
}
pub fn update_data_at_cell_path(
&mut self,
cell_path: &[PathMember],
new_val: Value,
) -> Result<(), ShellError> {
match cell_path.first() {
Some(path_member) => match path_member {
PathMember::String {
val: col_name,
span,
} => match self {
Value::List { vals, .. } => {
for val in vals.iter_mut() {
match val {
Value::Record {
cols,
vals,
span: v_span,
} => {
let mut found = false;
for col in cols.iter().zip(vals.iter_mut()) {
if col.0 == col_name {
found = true;
col.1.update_data_at_cell_path(
&cell_path[1..],
new_val.clone(),
)?
}
}
if !found {
return Err(ShellError::CantFindColumn(*span, *v_span));
}
}
v => return Err(ShellError::CantFindColumn(*span, v.span()?)),
}
}
}
Value::Record {
cols,
vals,
span: v_span,
} => {
let mut found = false;
for col in cols.iter().zip(vals.iter_mut()) {
if col.0 == col_name {
found = true;
col.1
.update_data_at_cell_path(&cell_path[1..], new_val.clone())?
}
}
if !found {
return Err(ShellError::CantFindColumn(*span, *v_span));
}
}
v => return Err(ShellError::CantFindColumn(*span, v.span()?)),
},
PathMember::Int { val: row_num, span } => match self {
Value::List { vals, .. } => {
if let Some(v) = vals.get_mut(*row_num) {
v.update_data_at_cell_path(&cell_path[1..], new_val)?
} else if vals.is_empty() {
return Err(ShellError::AccessEmptyContent(*span));
} else {
return Err(ShellError::AccessBeyondEnd(vals.len() - 1, *span));
}
}
v => return Err(ShellError::NotAList(*span, v.span()?)),
},
},
None => {
*self = new_val;
}
}
Ok(())
}
pub fn remove_data_at_cell_path(&mut self, cell_path: &[PathMember]) -> Result<(), ShellError> {
match cell_path.len() {
0 => Ok(()),
1 => {
let path_member = cell_path.first().expect("there is a first");
match path_member {
PathMember::String {
val: col_name,
span,
} => match self {
Value::List { vals, .. } => {
for val in vals.iter_mut() {
match val {
Value::Record {
cols,
vals,
span: v_span,
} => {
let mut found = false;
for (i, col) in cols.clone().iter().enumerate() {
if col == col_name {
cols.remove(i);
vals.remove(i);
found = true;
}
}
if !found {
return Err(ShellError::CantFindColumn(*span, *v_span));
}
}
v => return Err(ShellError::CantFindColumn(*span, v.span()?)),
}
}
Ok(())
}
Value::Record {
cols,
vals,
span: v_span,
} => {
let mut found = false;
for (i, col) in cols.clone().iter().enumerate() {
if col == col_name {
cols.remove(i);
vals.remove(i);
found = true;
}
}
if !found {
return Err(ShellError::CantFindColumn(*span, *v_span));
}
Ok(())
}
v => Err(ShellError::CantFindColumn(*span, v.span()?)),
},
PathMember::Int { val: row_num, span } => match self {
Value::List { vals, .. } => {
if vals.get_mut(*row_num).is_some() {
vals.remove(*row_num);
Ok(())
} else if vals.is_empty() {
Err(ShellError::AccessEmptyContent(*span))
} else {
Err(ShellError::AccessBeyondEnd(vals.len() - 1, *span))
}
}
v => Err(ShellError::NotAList(*span, v.span()?)),
},
}
}
_ => {
let path_member = cell_path.first().expect("there is a first");
match path_member {
PathMember::String {
val: col_name,
span,
} => match self {
Value::List { vals, .. } => {
for val in vals.iter_mut() {
match val {
Value::Record {
cols,
vals,
span: v_span,
} => {
let mut found = false;
for col in cols.iter().zip(vals.iter_mut()) {
if col.0 == col_name {
found = true;
col.1.remove_data_at_cell_path(&cell_path[1..])?
}
}
if !found {
return Err(ShellError::CantFindColumn(*span, *v_span));
}
}
v => return Err(ShellError::CantFindColumn(*span, v.span()?)),
}
}
Ok(())
}
Value::Record {
cols,
vals,
span: v_span,
} => {
let mut found = false;
for col in cols.iter().zip(vals.iter_mut()) {
if col.0 == col_name {
found = true;
col.1.remove_data_at_cell_path(&cell_path[1..])?
}
}
if !found {
return Err(ShellError::CantFindColumn(*span, *v_span));
}
Ok(())
}
v => Err(ShellError::CantFindColumn(*span, v.span()?)),
},
PathMember::Int { val: row_num, span } => match self {
Value::List { vals, .. } => {
if let Some(v) = vals.get_mut(*row_num) {
v.remove_data_at_cell_path(&cell_path[1..])
} else if vals.is_empty() {
Err(ShellError::AccessEmptyContent(*span))
} else {
Err(ShellError::AccessBeyondEnd(vals.len() - 1, *span))
}
}
v => Err(ShellError::NotAList(*span, v.span()?)),
},
}
}
}
}
pub fn insert_data_at_cell_path(
&mut self,
cell_path: &[PathMember],
new_val: Value,
) -> Result<(), ShellError> {
match cell_path.first() {
Some(path_member) => match path_member {
PathMember::String {
val: col_name,
span,
} => match self {
Value::List { vals, .. } => {
for val in vals.iter_mut() {
match val {
Value::Record {
cols,
vals,
span: v_span,
} => {
for col in cols.iter().zip(vals.iter_mut()) {
if col.0 == col_name {
if cell_path.len() == 1 {
return Err(ShellError::ColumnAlreadyExists(
*span, *v_span,
));
} else {
return col.1.insert_data_at_cell_path(
&cell_path[1..],
new_val,
);
}
}
}
cols.push(col_name.clone());
vals.push(new_val.clone());
}
_ => {
return Err(ShellError::UnsupportedInput(
"table or record".into(),
*span,
))
}
}
}
}
Value::Record {
cols,
vals,
span: v_span,
} => {
for col in cols.iter().zip(vals.iter_mut()) {
if col.0 == col_name {
if cell_path.len() == 1 {
return Err(ShellError::ColumnAlreadyExists(*span, *v_span));
} else {
return col
.1
.insert_data_at_cell_path(&cell_path[1..], new_val);
}
}
}
cols.push(col_name.clone());
vals.push(new_val);
}
_ => {
return Err(ShellError::UnsupportedInput(
"table or record".into(),
*span,
))
}
},
PathMember::Int { val: row_num, span } => match self {
Value::List { vals, .. } => {
if let Some(v) = vals.get_mut(*row_num) {
v.insert_data_at_cell_path(&cell_path[1..], new_val)?
} else if vals.is_empty() {
return Err(ShellError::AccessEmptyContent(*span));
} else {
return Err(ShellError::AccessBeyondEnd(vals.len() - 1, *span));
}
}
v => return Err(ShellError::NotAList(*span, v.span()?)),
},
},
None => {
*self = new_val;
}
}
Ok(())
}
pub fn is_true(&self) -> bool {
matches!(self, Value::Bool { val: true, .. })
}
pub fn is_false(&self) -> bool {
matches!(self, Value::Bool { val: false, .. })
}
pub fn columns(&self) -> Vec<String> {
match self {
Value::Record { cols, .. } => cols.clone(),
_ => vec![],
}
}
pub fn string(val: impl Into<String>, span: Span) -> Value {
Value::String {
val: val.into(),
span,
}
}
pub fn binary(val: impl Into<Vec<u8>>, span: Span) -> Value {
Value::Binary {
val: val.into(),
span,
}
}
pub fn int(val: i64, span: Span) -> Value {
Value::Int { val, span }
}
pub fn float(val: f64, span: Span) -> Value {
Value::Float { val, span }
}
pub fn boolean(val: bool, span: Span) -> Value {
Value::Bool { val, span }
}
/// Note: Only use this for test data, *not* live data, as it will point into unknown source
/// when used in errors.
pub fn test_string(s: impl Into<String>) -> Value {
Value::String {
val: s.into(),
span: Span::test_data(),
}
}
/// Note: Only use this for test data, *not* live data, as it will point into unknown source
/// when used in errors.
pub fn test_int(val: i64) -> Value {
Value::Int {
val,
span: Span::test_data(),
}
}
/// Note: Only use this for test data, *not* live data, as it will point into unknown source
/// when used in errors.
pub fn test_float(val: f64) -> Value {
Value::Float {
val,
span: Span::test_data(),
}
}
/// Note: Only use this for test data, *not* live data, as it will point into unknown source
/// when used in errors.
pub fn test_bool(val: bool) -> Value {
Value::Bool {
val,
span: Span::test_data(),
}
}
/// Note: Only use this for test data, *not* live data, as it will point into unknown source
/// when used in errors.
pub fn test_filesize(val: i64) -> Value {
Value::Filesize {
val,
span: Span::test_data(),
}
}
/// Note: Only use this for test data, *not* live data, as it will point into unknown source
/// when used in errors.
pub fn test_nothing() -> Value {
Value::Nothing {
span: Span::test_data(),
}
}
/// Note: Only use this for test data, *not* live data, as it will point into unknown source
/// when used in errors.
pub fn test_record(cols: Vec<impl Into<String>>, vals: Vec<Value>) -> Value {
Value::Record {
cols: cols.into_iter().map(|s| s.into()).collect(),
vals,
span: Span::test_data(),
}
}
}
impl Default for Value {
fn default() -> Self {
Value::Nothing {
span: Span { start: 0, end: 0 },
}
}
}
impl PartialOrd for Value {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
// Compare two floating point numbers. The decision interval for equality is dynamically
// scaled as the value being compared increases in magnitude.
fn compare_floats(val: f64, other: f64) -> Option<Ordering> {
let prec = f64::EPSILON.max(val.abs() * f64::EPSILON);
if (other - val).abs() < prec {
return Some(Ordering::Equal);
}
val.partial_cmp(&other)
}
match (self, other) {
(Value::Bool { val: lhs, .. }, rhs) => match rhs {
Value::Bool { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::Int { .. } => Some(Ordering::Less),
Value::Float { .. } => Some(Ordering::Less),
Value::Filesize { .. } => Some(Ordering::Less),
Value::Duration { .. } => Some(Ordering::Less),
Value::Date { .. } => Some(Ordering::Less),
Value::Range { .. } => Some(Ordering::Less),
Value::String { .. } => Some(Ordering::Less),
Value::Record { .. } => Some(Ordering::Less),
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Int { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::Float { val: rhs, .. } => compare_floats(*lhs as f64, *rhs),
Value::Filesize { .. } => Some(Ordering::Less),
Value::Duration { .. } => Some(Ordering::Less),
Value::Date { .. } => Some(Ordering::Less),
Value::Range { .. } => Some(Ordering::Less),
Value::String { .. } => Some(Ordering::Less),
Value::Record { .. } => Some(Ordering::Less),
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Float { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { val: rhs, .. } => compare_floats(*lhs, *rhs as f64),
Value::Float { val: rhs, .. } => compare_floats(*lhs, *rhs),
Value::Filesize { .. } => Some(Ordering::Less),
Value::Duration { .. } => Some(Ordering::Less),
Value::Date { .. } => Some(Ordering::Less),
Value::Range { .. } => Some(Ordering::Less),
Value::String { .. } => Some(Ordering::Less),
Value::Record { .. } => Some(Ordering::Less),
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Filesize { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::Duration { .. } => Some(Ordering::Less),
Value::Date { .. } => Some(Ordering::Less),
Value::Range { .. } => Some(Ordering::Less),
Value::String { .. } => Some(Ordering::Less),
Value::Record { .. } => Some(Ordering::Less),
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Duration { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::Date { .. } => Some(Ordering::Less),
Value::Range { .. } => Some(Ordering::Less),
Value::String { .. } => Some(Ordering::Less),
Value::Record { .. } => Some(Ordering::Less),
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Date { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::Range { .. } => Some(Ordering::Less),
Value::String { .. } => Some(Ordering::Less),
Value::Record { .. } => Some(Ordering::Less),
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Range { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::String { .. } => Some(Ordering::Less),
Value::Record { .. } => Some(Ordering::Less),
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::String { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { .. } => Some(Ordering::Greater),
Value::String { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::Record { .. } => Some(Ordering::Less),
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(
Value::Record {
cols: lhs_cols,
vals: lhs_vals,
..
},
rhs,
) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { .. } => Some(Ordering::Greater),
Value::String { .. } => Some(Ordering::Greater),
Value::Record {
cols: rhs_cols,
vals: rhs_vals,
..
} => {
// reorder cols and vals to make more logically compare.
// more genral, if two record have same col and values,
// the order of cols shouldn't affect the equal property.
let (lhs_cols_ordered, lhs_vals_ordered) =
reorder_record_inner(lhs_cols, lhs_vals);
let (rhs_cols_ordered, rhs_vals_ordered) =
reorder_record_inner(rhs_cols, rhs_vals);
let result = lhs_cols_ordered.partial_cmp(&rhs_cols_ordered);
if result == Some(Ordering::Equal) {
lhs_vals_ordered.partial_cmp(&rhs_vals_ordered)
} else {
result
}
}
Value::List { .. } => Some(Ordering::Less),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::List { vals: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { .. } => Some(Ordering::Greater),
Value::String { .. } => Some(Ordering::Greater),
Value::Record { .. } => Some(Ordering::Greater),
Value::List { vals: rhs, .. } => lhs.partial_cmp(rhs),
Value::Block { .. } => Some(Ordering::Less),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Block { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { .. } => Some(Ordering::Greater),
Value::String { .. } => Some(Ordering::Greater),
Value::Record { .. } => Some(Ordering::Greater),
Value::List { .. } => Some(Ordering::Greater),
Value::Block { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::Nothing { .. } => Some(Ordering::Less),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Nothing { .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { .. } => Some(Ordering::Greater),
Value::String { .. } => Some(Ordering::Greater),
Value::Record { .. } => Some(Ordering::Greater),
Value::List { .. } => Some(Ordering::Greater),
Value::Block { .. } => Some(Ordering::Greater),
Value::Nothing { .. } => Some(Ordering::Equal),
Value::Error { .. } => Some(Ordering::Less),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Error { .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { .. } => Some(Ordering::Greater),
Value::String { .. } => Some(Ordering::Greater),
Value::Record { .. } => Some(Ordering::Greater),
Value::List { .. } => Some(Ordering::Greater),
Value::Block { .. } => Some(Ordering::Greater),
Value::Nothing { .. } => Some(Ordering::Greater),
Value::Error { .. } => Some(Ordering::Equal),
Value::Binary { .. } => Some(Ordering::Less),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::Binary { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { .. } => Some(Ordering::Greater),
Value::String { .. } => Some(Ordering::Greater),
Value::Record { .. } => Some(Ordering::Greater),
Value::List { .. } => Some(Ordering::Greater),
Value::Block { .. } => Some(Ordering::Greater),
Value::Nothing { .. } => Some(Ordering::Greater),
Value::Error { .. } => Some(Ordering::Greater),
Value::Binary { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::CellPath { .. } => Some(Ordering::Less),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::CellPath { val: lhs, .. }, rhs) => match rhs {
Value::Bool { .. } => Some(Ordering::Greater),
Value::Int { .. } => Some(Ordering::Greater),
Value::Float { .. } => Some(Ordering::Greater),
Value::Filesize { .. } => Some(Ordering::Greater),
Value::Duration { .. } => Some(Ordering::Greater),
Value::Date { .. } => Some(Ordering::Greater),
Value::Range { .. } => Some(Ordering::Greater),
Value::String { .. } => Some(Ordering::Greater),
Value::Record { .. } => Some(Ordering::Greater),
Value::List { .. } => Some(Ordering::Greater),
Value::Block { .. } => Some(Ordering::Greater),
Value::Nothing { .. } => Some(Ordering::Greater),
Value::Error { .. } => Some(Ordering::Greater),
Value::Binary { .. } => Some(Ordering::Greater),
Value::CellPath { val: rhs, .. } => lhs.partial_cmp(rhs),
Value::CustomValue { .. } => Some(Ordering::Less),
},
(Value::CustomValue { val: lhs, .. }, rhs) => lhs.partial_cmp(rhs),
}
}
}
impl PartialEq for Value {
fn eq(&self, other: &Self) -> bool {
self.partial_cmp(other).map_or(false, Ordering::is_eq)
}
}
impl Value {
pub fn add(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if let Some(val) = lhs.checked_add(*rhs) {
Ok(Value::Int { val, span })
} else {
Err(ShellError::OperatorOverflow(
"add operation overflowed".into(),
span,
))
}
}
(Value::Int { val: lhs, .. }, Value::Float { val: rhs, .. }) => Ok(Value::Float {
val: *lhs as f64 + *rhs,
span,
}),
(Value::Float { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Float {
val: *lhs + *rhs as f64,
span,
}),
(Value::Float { val: lhs, .. }, Value::Float { val: rhs, .. }) => Ok(Value::Float {
val: lhs + rhs,
span,
}),
(Value::String { val: lhs, .. }, Value::String { val: rhs, .. }) => Ok(Value::String {
val: lhs.to_string() + rhs,
span,
}),
(Value::Date { val: lhs, .. }, Value::Duration { val: rhs, .. }) => {
match lhs.checked_add_signed(chrono::Duration::nanoseconds(*rhs)) {
Some(val) => Ok(Value::Date { val, span }),
_ => Err(ShellError::OperatorOverflow(
"addition operation overflowed".into(),
span,
)),
}
}
(Value::Duration { val: lhs, .. }, Value::Duration { val: rhs, .. }) => {
if let Some(val) = lhs.checked_add(*rhs) {
Ok(Value::Duration { val, span })
} else {
Err(ShellError::OperatorOverflow(
"add operation overflowed".into(),
span,
))
}
}
(Value::Filesize { val: lhs, .. }, Value::Filesize { val: rhs, .. }) => {
if let Some(val) = lhs.checked_add(*rhs) {
Ok(Value::Filesize { val, span })
} else {
Err(ShellError::OperatorOverflow(
"add operation overflowed".into(),
span,
))
}
}
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::Plus, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn append(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::List { vals: lhs, .. }, Value::List { vals: rhs, .. }) => {
let mut lhs = lhs.clone();
let mut rhs = rhs.clone();
lhs.append(&mut rhs);
Ok(Value::List { vals: lhs, span })
}
(Value::List { vals: lhs, .. }, val) => {
let mut lhs = lhs.clone();
lhs.push(val.clone());
Ok(Value::List { vals: lhs, span })
}
(val, Value::List { vals: rhs, .. }) => {
let mut rhs = rhs.clone();
rhs.insert(0, val.clone());
Ok(Value::List { vals: rhs, span })
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn sub(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if let Some(val) = lhs.checked_sub(*rhs) {
Ok(Value::Int { val, span })
} else {
Err(ShellError::OperatorOverflow(
"subtraction operation overflowed".into(),
span,
))
}
}
(Value::Int { val: lhs, .. }, Value::Float { val: rhs, .. }) => Ok(Value::Float {
val: *lhs as f64 - *rhs,
span,
}),
(Value::Float { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Float {
val: *lhs - *rhs as f64,
span,
}),
(Value::Float { val: lhs, .. }, Value::Float { val: rhs, .. }) => Ok(Value::Float {
val: lhs - rhs,
span,
}),
(Value::Date { val: lhs, .. }, Value::Date { val: rhs, .. }) => {
let result = lhs.signed_duration_since(*rhs);
match result.num_nanoseconds() {
Some(v) => Ok(Value::Duration { val: v, span }),
None => Err(ShellError::OperatorOverflow(
"subtraction operation overflowed".into(),
span,
)),
}
}
(Value::Date { val: lhs, .. }, Value::Duration { val: rhs, .. }) => {
match lhs.checked_sub_signed(chrono::Duration::nanoseconds(*rhs)) {
Some(val) => Ok(Value::Date { val, span }),
_ => Err(ShellError::OperatorOverflow(
"subtraction operation overflowed".into(),
span,
)),
}
}
(Value::Duration { val: lhs, .. }, Value::Duration { val: rhs, .. }) => {
if let Some(val) = lhs.checked_sub(*rhs) {
Ok(Value::Duration { val, span })
} else {
Err(ShellError::OperatorOverflow(
"subtraction operation overflowed".into(),
span,
))
}
}
(Value::Filesize { val: lhs, .. }, Value::Filesize { val: rhs, .. }) => {
if let Some(val) = lhs.checked_sub(*rhs) {
Ok(Value::Filesize { val, span })
} else {
Err(ShellError::OperatorOverflow(
"add operation overflowed".into(),
span,
))
}
}
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::Minus, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn mul(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if let Some(val) = lhs.checked_mul(*rhs) {
Ok(Value::Int { val, span })
} else {
Err(ShellError::OperatorOverflow(
"multiply operation overflowed".into(),
span,
))
}
}
(Value::Int { val: lhs, .. }, Value::Float { val: rhs, .. }) => Ok(Value::Float {
val: *lhs as f64 * *rhs,
span,
}),
(Value::Float { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Float {
val: *lhs * *rhs as f64,
span,
}),
(Value::Float { val: lhs, .. }, Value::Float { val: rhs, .. }) => Ok(Value::Float {
val: lhs * rhs,
span,
}),
(Value::Int { val: lhs, .. }, Value::Filesize { val: rhs, .. }) => {
Ok(Value::Filesize {
val: *lhs * *rhs,
span,
})
}
(Value::Filesize { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
Ok(Value::Filesize {
val: *lhs * *rhs,
span,
})
}
(Value::Float { val: lhs, .. }, Value::Filesize { val: rhs, .. }) => {
Ok(Value::Filesize {
val: (*lhs * *rhs as f64) as i64,
span,
})
}
(Value::Filesize { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
Ok(Value::Filesize {
val: (*lhs as f64 * *rhs) as i64,
span,
})
}
(Value::Int { val: lhs, .. }, Value::Duration { val: rhs, .. }) => {
Ok(Value::Duration {
val: *lhs * *rhs,
span,
})
}
(Value::Duration { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
Ok(Value::Duration {
val: *lhs * *rhs,
span,
})
}
(Value::Duration { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
Ok(Value::Duration {
val: (*lhs as f64 * *rhs) as i64,
span,
})
}
(Value::Float { val: lhs, .. }, Value::Duration { val: rhs, .. }) => {
Ok(Value::Duration {
val: (*lhs * *rhs as f64) as i64,
span,
})
}
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::Multiply, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn div(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
if lhs % rhs == 0 {
Ok(Value::Int {
val: lhs / rhs,
span,
})
} else {
Ok(Value::Float {
val: (*lhs as f64) / (*rhs as f64),
span,
})
}
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Int { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Float {
val: *lhs as f64 / *rhs,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Float { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Float {
val: *lhs / *rhs as f64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Float { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Float {
val: lhs / rhs,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Filesize { val: lhs, .. }, Value::Filesize { val: rhs, .. }) => {
if *rhs != 0 {
if lhs % rhs == 0 {
Ok(Value::Int {
val: lhs / rhs,
span,
})
} else {
Ok(Value::Float {
val: (*lhs as f64) / (*rhs as f64),
span,
})
}
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Filesize { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Filesize {
val: ((*lhs as f64) / (*rhs as f64)) as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Filesize { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Filesize {
val: (*lhs as f64 / rhs) as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Duration { val: lhs, .. }, Value::Duration { val: rhs, .. }) => {
if *rhs != 0 {
if lhs % rhs == 0 {
Ok(Value::Int {
val: lhs / rhs,
span,
})
} else {
Ok(Value::Float {
val: (*lhs as f64) / (*rhs as f64),
span,
})
}
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Duration { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Duration {
val: ((*lhs as f64) / (*rhs as f64)) as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Duration { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Duration {
val: ((*lhs as f64) / rhs) as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::Divide, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn floor_div(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Int {
val: (*lhs as f64 / *rhs as f64)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Int { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Int {
val: (*lhs as f64 / *rhs)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Float { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Int {
val: (*lhs / *rhs as f64)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Float { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Int {
val: (lhs / rhs)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Filesize { val: lhs, .. }, Value::Filesize { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Int {
val: (*lhs as f64 / *rhs as f64)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Filesize { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Filesize {
val: ((*lhs as f64) / (*rhs as f64))
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Filesize { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Filesize {
val: (*lhs as f64 / *rhs)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Duration { val: lhs, .. }, Value::Duration { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Int {
val: (*lhs as f64 / *rhs as f64)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Duration { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Duration {
val: (*lhs as f64 / *rhs as f64)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Duration { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Duration {
val: (*lhs as f64 / *rhs)
.max(std::i64::MIN as f64)
.min(std::i64::MAX as f64)
.floor() as i64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::Divide, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn lt(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
if let (Value::CustomValue { val: lhs, span }, rhs) = (self, rhs) {
return lhs.operation(*span, Operator::LessThan, op, rhs);
}
if !type_compatible(self.get_type(), rhs.get_type())
&& (self.get_type() != Type::Any)
&& (rhs.get_type() != Type::Any)
{
return Err(ShellError::TypeMismatch("compatible type".to_string(), op));
}
match self.partial_cmp(rhs) {
Some(ordering) => Ok(Value::Bool {
val: matches!(ordering, Ordering::Less),
span,
}),
None => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn lte(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
if let (Value::CustomValue { val: lhs, span }, rhs) = (self, rhs) {
return lhs.operation(*span, Operator::LessThanOrEqual, op, rhs);
}
if !type_compatible(self.get_type(), rhs.get_type())
&& (self.get_type() != Type::Any)
&& (rhs.get_type() != Type::Any)
{
return Err(ShellError::TypeMismatch("compatible type".to_string(), op));
}
match self.partial_cmp(rhs) {
Some(ordering) => Ok(Value::Bool {
val: matches!(ordering, Ordering::Less | Ordering::Equal),
span,
}),
None => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn gt(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
if let (Value::CustomValue { val: lhs, span }, rhs) = (self, rhs) {
return lhs.operation(*span, Operator::GreaterThan, op, rhs);
}
if !type_compatible(self.get_type(), rhs.get_type())
&& (self.get_type() != Type::Any)
&& (rhs.get_type() != Type::Any)
{
return Err(ShellError::TypeMismatch("compatible type".to_string(), op));
}
match self.partial_cmp(rhs) {
Some(ordering) => Ok(Value::Bool {
val: matches!(ordering, Ordering::Greater),
span,
}),
None => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn gte(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
if let (Value::CustomValue { val: lhs, span }, rhs) = (self, rhs) {
return lhs.operation(*span, Operator::GreaterThanOrEqual, op, rhs);
}
if !type_compatible(self.get_type(), rhs.get_type())
&& (self.get_type() != Type::Any)
&& (rhs.get_type() != Type::Any)
{
return Err(ShellError::TypeMismatch("compatible type".to_string(), op));
}
match self.partial_cmp(rhs) {
Some(ordering) => Ok(Value::Bool {
val: matches!(ordering, Ordering::Greater | Ordering::Equal),
span,
}),
None => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn eq(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
if let (Value::CustomValue { val: lhs, span }, rhs) = (self, rhs) {
return lhs.operation(*span, Operator::Equal, op, rhs);
}
match self.partial_cmp(rhs) {
Some(ordering) => Ok(Value::Bool {
val: matches!(ordering, Ordering::Equal),
span,
}),
None => match (self, rhs) {
(Value::Nothing { .. }, _) | (_, Value::Nothing { .. }) => {
Ok(Value::Bool { val: false, span })
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
},
}
}
pub fn ne(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
if let (Value::CustomValue { val: lhs, span }, rhs) = (self, rhs) {
return lhs.operation(*span, Operator::NotEqual, op, rhs);
}
match self.partial_cmp(rhs) {
Some(ordering) => Ok(Value::Bool {
val: !matches!(ordering, Ordering::Equal),
span,
}),
None => match (self, rhs) {
(Value::Nothing { .. }, _) | (_, Value::Nothing { .. }) => {
Ok(Value::Bool { val: true, span })
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
},
}
}
pub fn r#in(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(lhs, Value::Range { val: rhs, .. }) => Ok(Value::Bool {
val: rhs.contains(lhs),
span,
}),
(Value::String { val: lhs, .. }, Value::String { val: rhs, .. }) => Ok(Value::Bool {
val: rhs.contains(lhs),
span,
}),
(lhs, Value::List { vals: rhs, .. }) => Ok(Value::Bool {
val: rhs.contains(lhs),
span,
}),
(Value::String { val: lhs, .. }, Value::Record { cols: rhs, .. }) => Ok(Value::Bool {
val: rhs.contains(lhs),
span,
}),
(Value::String { .. } | Value::Int { .. }, Value::CellPath { val: rhs, .. }) => {
let val = rhs.members.iter().any(|member| match (self, member) {
(Value::Int { val: lhs, .. }, PathMember::Int { val: rhs, .. }) => {
*lhs == *rhs as i64
}
(Value::String { val: lhs, .. }, PathMember::String { val: rhs, .. }) => {
lhs == rhs
}
(Value::String { .. }, PathMember::Int { .. })
| (Value::Int { .. }, PathMember::String { .. }) => false,
_ => unreachable!(
"outer match arm ensures `self` is either a `String` or `Int` variant"
),
});
Ok(Value::Bool { val, span })
}
(Value::CellPath { val: lhs, .. }, Value::CellPath { val: rhs, .. }) => {
Ok(Value::Bool {
val: rhs
.members
.windows(lhs.members.len())
.any(|member_window| member_window == rhs.members),
span,
})
}
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::In, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn not_in(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(lhs, Value::Range { val: rhs, .. }) => Ok(Value::Bool {
val: !rhs.contains(lhs),
span,
}),
(Value::String { val: lhs, .. }, Value::String { val: rhs, .. }) => Ok(Value::Bool {
val: !rhs.contains(lhs),
span,
}),
(lhs, Value::List { vals: rhs, .. }) => Ok(Value::Bool {
val: !rhs.contains(lhs),
span,
}),
(Value::String { val: lhs, .. }, Value::Record { cols: rhs, .. }) => Ok(Value::Bool {
val: !rhs.contains(lhs),
span,
}),
(Value::String { .. } | Value::Int { .. }, Value::CellPath { val: rhs, .. }) => {
let val = rhs.members.iter().any(|member| match (self, member) {
(Value::Int { val: lhs, .. }, PathMember::Int { val: rhs, .. }) => {
*lhs != *rhs as i64
}
(Value::String { val: lhs, .. }, PathMember::String { val: rhs, .. }) => {
lhs != rhs
}
(Value::String { .. }, PathMember::Int { .. })
| (Value::Int { .. }, PathMember::String { .. }) => true,
_ => unreachable!(
"outer match arm ensures `self` is either a `String` or `Int` variant"
),
});
Ok(Value::Bool { val, span })
}
(Value::CellPath { val: lhs, .. }, Value::CellPath { val: rhs, .. }) => {
Ok(Value::Bool {
val: rhs
.members
.windows(lhs.members.len())
.all(|member_window| member_window != rhs.members),
span,
})
}
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::NotIn, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn regex_match(
&self,
op: Span,
rhs: &Value,
invert: bool,
span: Span,
) -> Result<Value, ShellError> {
match (self, rhs) {
(
Value::String { val: lhs, .. },
Value::String {
val: rhs,
span: rhs_span,
},
) => {
// We are leaving some performance on the table by compiling the regex every time.
// Small regexes compile in microseconds, and the simplicity of this approach currently
// outweighs the performance costs. Revisit this if it ever becomes a bottleneck.
let regex = Regex::new(rhs)
.map_err(|e| ShellError::UnsupportedInput(format!("{e}"), *rhs_span))?;
let is_match = regex.is_match(lhs);
Ok(Value::Bool {
val: if invert {
!is_match.unwrap_or(false)
} else {
is_match.unwrap_or(true)
},
span,
})
}
(Value::CustomValue { val: lhs, span }, rhs) => lhs.operation(
*span,
if invert {
Operator::NotRegexMatch
} else {
Operator::RegexMatch
},
op,
rhs,
),
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn starts_with(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::String { val: lhs, .. }, Value::String { val: rhs, .. }) => Ok(Value::Bool {
val: lhs.starts_with(rhs),
span,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::StartsWith, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn ends_with(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::String { val: lhs, .. }, Value::String { val: rhs, .. }) => Ok(Value::Bool {
val: lhs.ends_with(rhs),
span,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::EndsWith, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn bit_shl(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Int {
span,
val: *lhs << rhs,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::ShiftLeft, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn bit_shr(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Int {
span,
val: *lhs >> rhs,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::ShiftRight, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn bit_or(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Int {
span,
val: *lhs | rhs,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::BitOr, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn bit_xor(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Int {
span,
val: *lhs ^ rhs,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::BitXor, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn bit_and(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Int {
span,
val: *lhs & rhs,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::BitAnd, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn modulo(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Int {
val: lhs % rhs,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Int { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Float {
val: *lhs as f64 % *rhs,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Float { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if *rhs != 0 {
Ok(Value::Float {
val: *lhs % *rhs as f64,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::Float { val: lhs, .. }, Value::Float { val: rhs, .. }) => {
if *rhs != 0.0 {
Ok(Value::Float {
val: lhs % rhs,
span,
})
} else {
Err(ShellError::DivisionByZero(op))
}
}
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::Modulo, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn and(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Bool { val: lhs, .. }, Value::Bool { val: rhs, .. }) => Ok(Value::Bool {
val: *lhs && *rhs,
span,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::And, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn or(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Bool { val: lhs, .. }, Value::Bool { val: rhs, .. }) => Ok(Value::Bool {
val: *lhs || *rhs,
span,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::Or, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
pub fn pow(&self, op: Span, rhs: &Value, span: Span) -> Result<Value, ShellError> {
match (self, rhs) {
(Value::Int { val: lhs, .. }, Value::Int { val: rhs, .. }) => {
if let Some(val) = lhs.checked_pow(*rhs as u32) {
Ok(Value::Int { val, span })
} else {
Err(ShellError::OperatorOverflow(
"pow operation overflowed".into(),
span,
))
}
}
(Value::Int { val: lhs, .. }, Value::Float { val: rhs, .. }) => Ok(Value::Float {
val: (*lhs as f64).powf(*rhs),
span,
}),
(Value::Float { val: lhs, .. }, Value::Int { val: rhs, .. }) => Ok(Value::Float {
val: lhs.powf(*rhs as f64),
span,
}),
(Value::Float { val: lhs, .. }, Value::Float { val: rhs, .. }) => Ok(Value::Float {
val: lhs.powf(*rhs),
span,
}),
(Value::CustomValue { val: lhs, span }, rhs) => {
lhs.operation(*span, Operator::Pow, op, rhs)
}
_ => Err(ShellError::OperatorMismatch {
op_span: op,
lhs_ty: self.get_type(),
lhs_span: self.span()?,
rhs_ty: rhs.get_type(),
rhs_span: rhs.span()?,
}),
}
}
}
fn reorder_record_inner(cols: &[String], vals: &[Value]) -> (Vec<String>, Vec<Value>) {
let mut kv_pairs =
iter::zip(cols.to_owned(), vals.to_owned()).collect::<Vec<(String, Value)>>();
kv_pairs.sort_by(|a, b| {
a.0.partial_cmp(&b.0)
.expect("Columns should support compare")
});
let (mut cols, mut vals) = (vec![], vec![]);
for (col, val) in kv_pairs {
cols.push(col);
vals.push(val);
}
(cols, vals)
}
/// Create a Value::Record from a spanned hashmap
impl From<Spanned<HashMap<String, Value>>> for Value {
fn from(input: Spanned<HashMap<String, Value>>) -> Self {
let span = input.span;
let (cols, vals) = input
.item
.into_iter()
.fold((vec![], vec![]), |mut acc, (k, v)| {
acc.0.push(k);
acc.1.push(v);
acc
});
Value::Record { cols, vals, span }
}
}
fn type_compatible(a: Type, b: Type) -> bool {
if a == b {
return true;
}
matches!((a, b), (Type::Int, Type::Float) | (Type::Float, Type::Int))
}
/// Create a Value::Record from a spanned indexmap
impl From<Spanned<IndexMap<String, Value>>> for Value {
fn from(input: Spanned<IndexMap<String, Value>>) -> Self {
let span = input.span;
let (cols, vals) = input
.item
.into_iter()
.fold((vec![], vec![]), |mut acc, (k, v)| {
acc.0.push(k);
acc.1.push(v);
acc
});
Value::Record { cols, vals, span }
}
}
/// Is the given year a leap year?
#[allow(clippy::nonminimal_bool)]
pub fn is_leap_year(year: i32) -> bool {
(year % 4 == 0) && (year % 100 != 0 || (year % 100 == 0 && year % 400 == 0))
}
#[derive(Clone, Copy)]
enum TimePeriod {
Nanos(i64),
Micros(i64),
Millis(i64),
Seconds(i64),
Minutes(i64),
Hours(i64),
Days(i64),
Weeks(i64),
Months(i64),
Years(i64),
}
impl TimePeriod {
fn to_text(self) -> Cow<'static, str> {
match self {
Self::Nanos(n) => format!("{}ns", n).into(),
Self::Micros(n) => format!("{}µs", n).into(),
Self::Millis(n) => format!("{}ms", n).into(),
Self::Seconds(n) => format!("{}sec", n).into(),
Self::Minutes(n) => format!("{}min", n).into(),
Self::Hours(n) => format!("{}hr", n).into(),
Self::Days(n) => format!("{}day", n).into(),
Self::Weeks(n) => format!("{}wk", n).into(),
Self::Months(n) => format!("{}month", n).into(),
Self::Years(n) => format!("{}yr", n).into(),
}
}
}
impl Display for TimePeriod {
fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
write!(f, "{}", self.to_text())
}
}
pub fn format_duration(duration: i64) -> String {
// Attribution: most of this is taken from chrono-humanize-rs. Thanks!
// https://gitlab.com/imp/chrono-humanize-rs/-/blob/master/src/humantime.rs
const DAYS_IN_YEAR: i64 = 365;
const DAYS_IN_MONTH: i64 = 30;
let (sign, duration) = if duration >= 0 {
(1, duration)
} else {
(-1, -duration)
};
let dur = Duration::nanoseconds(duration);
/// Split this a duration into number of whole years and the remainder
fn split_years(duration: Duration) -> (Option<i64>, Duration) {
let years = duration.num_days() / DAYS_IN_YEAR;
let remainder = duration - Duration::days(years * DAYS_IN_YEAR);
normalize_split(years, remainder)
}
/// Split this a duration into number of whole months and the remainder
fn split_months(duration: Duration) -> (Option<i64>, Duration) {
let months = duration.num_days() / DAYS_IN_MONTH;
let remainder = duration - Duration::days(months * DAYS_IN_MONTH);
normalize_split(months, remainder)
}
/// Split this a duration into number of whole weeks and the remainder
fn split_weeks(duration: Duration) -> (Option<i64>, Duration) {
let weeks = duration.num_weeks();
let remainder = duration - Duration::weeks(weeks);
normalize_split(weeks, remainder)
}
/// Split this a duration into number of whole days and the remainder
fn split_days(duration: Duration) -> (Option<i64>, Duration) {
let days = duration.num_days();
let remainder = duration - Duration::days(days);
normalize_split(days, remainder)
}
/// Split this a duration into number of whole hours and the remainder
fn split_hours(duration: Duration) -> (Option<i64>, Duration) {
let hours = duration.num_hours();
let remainder = duration - Duration::hours(hours);
normalize_split(hours, remainder)
}
/// Split this a duration into number of whole minutes and the remainder
fn split_minutes(duration: Duration) -> (Option<i64>, Duration) {
let minutes = duration.num_minutes();
let remainder = duration - Duration::minutes(minutes);
normalize_split(minutes, remainder)
}
/// Split this a duration into number of whole seconds and the remainder
fn split_seconds(duration: Duration) -> (Option<i64>, Duration) {
let seconds = duration.num_seconds();
let remainder = duration - Duration::seconds(seconds);
normalize_split(seconds, remainder)
}
/// Split this a duration into number of whole milliseconds and the remainder
fn split_milliseconds(duration: Duration) -> (Option<i64>, Duration) {
let millis = duration.num_milliseconds();
let remainder = duration - Duration::milliseconds(millis);
normalize_split(millis, remainder)
}
/// Split this a duration into number of whole seconds and the remainder
fn split_microseconds(duration: Duration) -> (Option<i64>, Duration) {
let micros = duration.num_microseconds().unwrap_or_default();
let remainder = duration - Duration::microseconds(micros);
normalize_split(micros, remainder)
}
/// Split this a duration into number of whole seconds and the remainder
fn split_nanoseconds(duration: Duration) -> (Option<i64>, Duration) {
let nanos = duration.num_nanoseconds().unwrap_or_default();
let remainder = duration - Duration::nanoseconds(nanos);
normalize_split(nanos, remainder)
}
fn normalize_split(
wholes: impl Into<Option<i64>>,
remainder: Duration,
) -> (Option<i64>, Duration) {
let wholes = wholes.into().map(i64::abs).filter(|x| *x > 0);
(wholes, remainder)
}
let mut periods = vec![];
let (years, remainder) = split_years(dur);
if let Some(years) = years {
periods.push(TimePeriod::Years(years));
}
let (months, remainder) = split_months(remainder);
if let Some(months) = months {
periods.push(TimePeriod::Months(months));
}
let (weeks, remainder) = split_weeks(remainder);
if let Some(weeks) = weeks {
periods.push(TimePeriod::Weeks(weeks));
}
let (days, remainder) = split_days(remainder);
if let Some(days) = days {
periods.push(TimePeriod::Days(days));
}
let (hours, remainder) = split_hours(remainder);
if let Some(hours) = hours {
periods.push(TimePeriod::Hours(hours));
}
let (minutes, remainder) = split_minutes(remainder);
if let Some(minutes) = minutes {
periods.push(TimePeriod::Minutes(minutes));
}
let (seconds, remainder) = split_seconds(remainder);
if let Some(seconds) = seconds {
periods.push(TimePeriod::Seconds(seconds));
}
let (millis, remainder) = split_milliseconds(remainder);
if let Some(millis) = millis {
periods.push(TimePeriod::Millis(millis));
}
let (micros, remainder) = split_microseconds(remainder);
if let Some(micros) = micros {
periods.push(TimePeriod::Micros(micros));
}
let (nanos, _remainder) = split_nanoseconds(remainder);
if let Some(nanos) = nanos {
periods.push(TimePeriod::Nanos(nanos));
}
if periods.is_empty() {
periods.push(TimePeriod::Seconds(0));
}
// let last = periods.pop().map(|last| last.to_text().to_string());
let text = periods
.into_iter()
.map(|p| p.to_text().to_string())
.collect::<Vec<String>>();
// if let Some(last) = last {
// text.push(format!("and {}", last));
// }
format!(
"{}{}",
if sign == -1 { "-" } else { "" },
text.join(" ").trim()
)
}
pub fn format_filesize_from_conf(num_bytes: i64, config: &Config) -> String {
// We need to take into account config.filesize_metric so, if someone asks for KB
// filesize_metric is true, return KiB
format_filesize(
num_bytes,
config.filesize_format.as_str(),
config.filesize_metric,
)
}
pub fn format_filesize(num_bytes: i64, format_value: &str, filesize_metric: bool) -> String {
// Allow the user to specify how they want their numbers formatted
let filesize_format_var = get_filesize_format(format_value, filesize_metric);
let byte = byte_unit::Byte::from_bytes(num_bytes as u128);
let adj_byte =
if filesize_format_var.0 == byte_unit::ByteUnit::B && filesize_format_var.1 == "auto" {
byte.get_appropriate_unit(!filesize_metric)
} else {
byte.get_adjusted_unit(filesize_format_var.0)
};
match adj_byte.get_unit() {
byte_unit::ByteUnit::B => {
let locale = get_system_locale();
let locale_byte = adj_byte.get_value() as u64;
let locale_byte_string = locale_byte.to_formatted_string(&locale);
if filesize_format_var.1 == "auto" {
format!("{} B", locale_byte_string)
} else {
locale_byte_string
}
}
_ => adj_byte.format(1),
}
}
fn get_filesize_format(format_value: &str, filesize_metric: bool) -> (ByteUnit, &str) {
match format_value {
"b" => (byte_unit::ByteUnit::B, ""),
"kb" => {
if filesize_metric {
(byte_unit::ByteUnit::KiB, "")
} else {
(byte_unit::ByteUnit::KB, "")
}
}
"kib" => (byte_unit::ByteUnit::KiB, ""),
"mb" => {
if filesize_metric {
(byte_unit::ByteUnit::MiB, "")
} else {
(byte_unit::ByteUnit::MB, "")
}
}
"mib" => (byte_unit::ByteUnit::MiB, ""),
"gb" => {
if filesize_metric {
(byte_unit::ByteUnit::GiB, "")
} else {
(byte_unit::ByteUnit::GB, "")
}
}
"gib" => (byte_unit::ByteUnit::GiB, ""),
"tb" => {
if filesize_metric {
(byte_unit::ByteUnit::TiB, "")
} else {
(byte_unit::ByteUnit::TB, "")
}
}
"tib" => (byte_unit::ByteUnit::TiB, ""),
"pb" => {
if filesize_metric {
(byte_unit::ByteUnit::PiB, "")
} else {
(byte_unit::ByteUnit::PB, "")
}
}
"pib" => (byte_unit::ByteUnit::PiB, ""),
"eb" => {
if filesize_metric {
(byte_unit::ByteUnit::EiB, "")
} else {
(byte_unit::ByteUnit::EB, "")
}
}
"eib" => (byte_unit::ByteUnit::EiB, ""),
"zb" => {
if filesize_metric {
(byte_unit::ByteUnit::ZiB, "")
} else {
(byte_unit::ByteUnit::ZB, "")
}
}
"zib" => (byte_unit::ByteUnit::ZiB, ""),
_ => (byte_unit::ByteUnit::B, "auto"),
}
}
#[cfg(test)]
mod tests {
use super::{Span, Value};
mod is_empty {
use super::*;
#[test]
fn test_string() {
let value = Value::string("", Span::unknown());
assert!(value.is_empty());
}
#[test]
fn test_list() {
let list_with_no_values = Value::List {
vals: vec![],
span: Span::unknown(),
};
let list_with_one_empty_string = Value::List {
vals: vec![Value::string("", Span::unknown())],
span: Span::unknown(),
};
assert!(list_with_no_values.is_empty());
assert!(!list_with_one_empty_string.is_empty());
}
#[test]
fn test_record() {
let no_columns_nor_cell_values = Value::Record {
cols: vec![],
vals: vec![],
span: Span::unknown(),
};
let one_column_and_one_cell_value_with_empty_strings = Value::Record {
cols: vec![String::from("")],
vals: vec![Value::string("", Span::unknown())],
span: Span::unknown(),
};
let one_column_with_a_string_and_one_cell_value_with_empty_string = Value::Record {
cols: vec![String::from("column")],
vals: vec![Value::string("", Span::unknown())],
span: Span::unknown(),
};
let one_column_with_empty_string_and_one_value_with_a_string = Value::Record {
cols: vec![String::from("")],
vals: vec![Value::string("text", Span::unknown())],
span: Span::unknown(),
};
assert!(no_columns_nor_cell_values.is_empty());
assert!(!one_column_and_one_cell_value_with_empty_strings.is_empty());
assert!(!one_column_with_a_string_and_one_cell_value_with_empty_string.is_empty());
assert!(!one_column_with_empty_string_and_one_value_with_a_string.is_empty());
}
}
}
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