2024-08-09 01:59:09 +00:00
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//! Virtual machine for running the abstract syntax tree.
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2024-08-09 00:58:56 +00:00
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use std::{
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2024-08-09 10:09:59 +00:00
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collections::{BTreeMap, HashMap},
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2024-08-09 00:58:56 +00:00
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error::Error,
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fmt::{self, Display, Formatter},
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};
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2024-08-05 02:15:31 +00:00
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2024-08-05 19:54:48 +00:00
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use crate::{
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2024-08-09 08:23:02 +00:00
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abstract_tree::BinaryOperator, parse, AbstractSyntaxTree, Analyzer, AnalyzerError,
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2024-08-09 07:00:48 +00:00
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BuiltInFunctionError, Identifier, Node, ParseError, Span, Statement, Value, ValueError,
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2024-08-05 19:54:48 +00:00
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};
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2024-08-05 04:40:51 +00:00
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pub fn run(
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input: &str,
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variables: &mut HashMap<Identifier, Value>,
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2024-08-07 23:03:50 +00:00
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) -> Result<Option<Value>, VmError> {
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2024-08-05 22:45:43 +00:00
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let abstract_syntax_tree = parse(input)?;
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2024-08-07 15:57:15 +00:00
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let analyzer = Analyzer::new(&abstract_syntax_tree, variables);
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2024-08-07 15:38:08 +00:00
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analyzer.analyze()?;
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2024-08-05 22:45:43 +00:00
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let mut vm = Vm::new(abstract_syntax_tree);
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2024-08-05 02:15:31 +00:00
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2024-08-05 04:40:51 +00:00
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vm.run(variables)
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2024-08-05 02:15:31 +00:00
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}
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2024-08-07 23:03:50 +00:00
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pub struct Vm {
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abstract_tree: AbstractSyntaxTree,
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2024-08-05 02:15:31 +00:00
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}
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2024-08-07 23:03:50 +00:00
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impl Vm {
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pub fn new(abstract_tree: AbstractSyntaxTree) -> Self {
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2024-08-07 15:38:08 +00:00
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Self { abstract_tree }
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2024-08-05 02:15:31 +00:00
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}
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2024-08-05 04:40:51 +00:00
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pub fn run(
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&mut self,
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variables: &mut HashMap<Identifier, Value>,
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2024-08-07 23:03:50 +00:00
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) -> Result<Option<Value>, VmError> {
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2024-08-05 02:15:31 +00:00
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let mut previous_value = None;
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2024-08-07 15:38:08 +00:00
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while let Some(node) = self.abstract_tree.nodes.pop_front() {
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2024-08-05 04:40:51 +00:00
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previous_value = self.run_node(node, variables)?;
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2024-08-05 02:15:31 +00:00
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}
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Ok(previous_value)
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}
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2024-08-05 04:40:51 +00:00
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fn run_node(
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&self,
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2024-08-09 07:00:48 +00:00
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node: Node<Statement>,
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2024-08-05 04:40:51 +00:00
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variables: &mut HashMap<Identifier, Value>,
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) -> Result<Option<Value>, VmError> {
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2024-08-09 07:00:48 +00:00
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match node.inner {
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Statement::Assignment {
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identifier,
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value_node,
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} => {
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let value_node_position = value_node.position;
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let value = if let Some(value) = self.run_node(*value_node, variables)? {
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2024-08-05 02:15:31 +00:00
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value
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} else {
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2024-08-05 04:40:51 +00:00
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return Err(VmError::ExpectedValue {
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2024-08-09 08:23:02 +00:00
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position: value_node_position,
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2024-08-05 04:40:51 +00:00
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});
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2024-08-05 02:15:31 +00:00
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};
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2024-08-09 08:23:02 +00:00
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2024-08-09 09:18:39 +00:00
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variables.insert(identifier.inner, value);
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2024-08-09 08:23:02 +00:00
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Ok(None)
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}
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Statement::BinaryOperation {
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left,
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operator,
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right,
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} => {
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let left_position = left.position;
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let left_value = if let Some(value) = self.run_node(*left, variables)? {
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value
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} else {
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return Err(VmError::ExpectedValue {
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2024-08-09 08:23:02 +00:00
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position: left_position,
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2024-08-05 04:40:51 +00:00
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});
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};
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2024-08-09 08:23:02 +00:00
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let right_position = right.position;
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let right_value = if let Some(value) = self.run_node(*right, variables)? {
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2024-08-05 04:40:51 +00:00
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value
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} else {
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return Err(VmError::ExpectedValue {
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2024-08-09 08:23:02 +00:00
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position: right_position,
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2024-08-05 04:40:51 +00:00
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});
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};
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2024-08-09 08:23:02 +00:00
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let result = match operator.inner {
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BinaryOperator::Add => left_value.add(&right_value),
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2024-08-09 08:56:24 +00:00
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BinaryOperator::And => left_value.and(&right_value),
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BinaryOperator::Divide => left_value.divide(&right_value),
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2024-08-09 11:15:09 +00:00
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BinaryOperator::Equal => Ok(Value::boolean(left_value == right_value)),
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BinaryOperator::Greater => left_value.greater_than(&right_value),
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BinaryOperator::GreaterOrEqual => {
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left_value.greater_than_or_equal(&right_value)
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}
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BinaryOperator::Less => left_value.less_than(&right_value),
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BinaryOperator::LessOrEqual => left_value.less_than_or_equal(&right_value),
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2024-08-09 11:02:55 +00:00
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BinaryOperator::Modulo => left_value.modulo(&right_value),
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2024-08-09 08:23:02 +00:00
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BinaryOperator::Multiply => left_value.multiply(&right_value),
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2024-08-09 08:56:24 +00:00
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BinaryOperator::Or => left_value.or(&right_value),
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2024-08-09 08:23:02 +00:00
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BinaryOperator::Subtract => left_value.subtract(&right_value),
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}
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.map_err(|value_error| VmError::ValueError {
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error: value_error,
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position: node.position,
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})?;
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2024-08-05 04:40:51 +00:00
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2024-08-09 08:23:02 +00:00
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Ok(Some(result))
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2024-08-05 04:40:51 +00:00
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}
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2024-08-09 15:41:23 +00:00
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Statement::Block(statements) => {
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let mut previous_value = None;
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for statement in statements {
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previous_value = self.run_node(statement, variables)?;
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}
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Ok(previous_value)
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}
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2024-08-07 22:24:25 +00:00
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Statement::BuiltInFunctionCall {
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function,
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type_arguments: _,
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value_arguments: value_nodes,
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} => {
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2024-08-07 22:46:40 +00:00
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let values = if let Some(nodes) = value_nodes {
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2024-08-07 22:24:25 +00:00
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let mut values = Vec::new();
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for node in nodes {
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let position = node.position;
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let value = if let Some(value) = self.run_node(node, variables)? {
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value
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} else {
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return Err(VmError::ExpectedValue { position });
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};
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values.push(value);
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}
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Some(values)
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} else {
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None
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};
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2024-08-09 05:43:58 +00:00
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let function_call_return =
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function
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.call(None, values)
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.map_err(|built_in_function_error| VmError::BuiltInFunctionError {
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error: built_in_function_error,
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position: node.position,
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})?;
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2024-08-07 22:24:25 +00:00
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2024-08-08 17:49:40 +00:00
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Ok(function_call_return)
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2024-08-07 22:24:25 +00:00
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}
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Statement::Constant(value) => Ok(Some(value.clone())),
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Statement::FunctionCall {
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function: function_node,
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2024-08-07 22:46:40 +00:00
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type_arguments: _,
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2024-08-07 22:24:25 +00:00
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value_arguments: value_parameter_nodes,
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} => {
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let function_position = function_node.position;
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let function_value =
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if let Some(value) = self.run_node(*function_node, variables)? {
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value
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} else {
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return Err(VmError::ExpectedValue {
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position: function_position,
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});
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};
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let function = if let Some(function) = function_value.as_function() {
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function
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} else {
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2024-08-09 00:58:56 +00:00
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return Err(VmError::ExpectedFunction {
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actual: function_value,
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2024-08-07 22:24:25 +00:00
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position: function_position,
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2024-08-09 00:58:56 +00:00
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});
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2024-08-07 22:24:25 +00:00
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};
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let value_parameters = if let Some(value_nodes) = value_parameter_nodes {
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let mut value_parameters = Vec::new();
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for node in value_nodes {
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let position = node.position;
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let value = if let Some(value) = self.run_node(node, variables)? {
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value
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} else {
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return Err(VmError::ExpectedValue { position });
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};
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value_parameters.push(value);
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}
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Some(value_parameters)
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} else {
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None
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};
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2024-08-07 23:03:50 +00:00
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Ok(function.clone().call(None, value_parameters, variables)?)
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2024-08-07 22:24:25 +00:00
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}
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2024-08-09 04:49:17 +00:00
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Statement::Identifier(identifier) => {
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if let Some(value) = variables.get(&identifier) {
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Ok(Some(value.clone()))
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} else {
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Err(VmError::UndefinedIdentifier {
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identifier,
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position: node.position,
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})
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}
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}
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2024-08-05 04:40:51 +00:00
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Statement::List(nodes) => {
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let values = nodes
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.into_iter()
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.map(|node| {
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2024-08-07 19:47:37 +00:00
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let span = node.position;
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2024-08-05 04:40:51 +00:00
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if let Some(value) = self.run_node(node, variables)? {
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Ok(value)
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} else {
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Err(VmError::ExpectedValue { position: span })
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}
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})
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2024-08-07 23:03:50 +00:00
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.collect::<Result<Vec<Value>, VmError>>()?;
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2024-08-05 04:40:51 +00:00
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Ok(Some(Value::list(values)))
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}
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2024-08-09 10:09:59 +00:00
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Statement::Map(nodes) => {
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let mut values = BTreeMap::new();
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for (identifier, value_node) in nodes {
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let position = value_node.position;
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let value = if let Some(value) = self.run_node(value_node, variables)? {
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value
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} else {
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return Err(VmError::ExpectedValue { position });
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};
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values.insert(identifier.inner, value);
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}
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Ok(Some(Value::map(values)))
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}
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2024-08-09 15:41:23 +00:00
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Statement::Nil(node) => {
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let _return = self.run_node(*node, variables)?;
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Ok(None)
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}
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2024-08-05 18:31:08 +00:00
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Statement::PropertyAccess(left, right) => {
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2024-08-07 19:47:37 +00:00
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let left_span = left.position;
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2024-08-07 22:24:25 +00:00
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let left_value = if let Some(value) = self.run_node(*left, variables)? {
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2024-08-05 18:31:08 +00:00
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value
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} else {
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return Err(VmError::ExpectedValue {
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position: left_span,
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});
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};
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2024-08-07 19:47:37 +00:00
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let right_span = right.position;
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2024-08-05 18:31:08 +00:00
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2024-08-07 22:24:25 +00:00
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if let (Some(list), Statement::Constant(value)) =
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2024-08-09 07:00:48 +00:00
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(left_value.as_list(), &right.inner)
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2024-08-05 19:54:48 +00:00
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{
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2024-08-05 18:58:58 +00:00
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if let Some(index) = value.as_integer() {
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2024-08-05 19:54:48 +00:00
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let value = list.get(index as usize).cloned();
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2024-08-05 18:58:58 +00:00
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2024-08-05 19:54:48 +00:00
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return Ok(value);
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2024-08-05 18:58:58 +00:00
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}
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}
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2024-08-07 22:24:25 +00:00
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if let (
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value,
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Statement::BuiltInFunctionCall {
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function,
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2024-08-07 22:46:40 +00:00
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type_arguments: _,
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value_arguments: value_argument_nodes,
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2024-08-07 22:24:25 +00:00
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},
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2024-08-09 07:00:48 +00:00
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) = (left_value, right.inner)
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2024-08-07 22:24:25 +00:00
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{
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2024-08-07 22:39:28 +00:00
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let mut value_arguments = Vec::new();
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2024-08-07 22:24:25 +00:00
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2024-08-07 22:39:28 +00:00
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value_arguments.push(value);
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2024-08-07 22:24:25 +00:00
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2024-08-07 22:39:28 +00:00
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if let Some(value_nodes) = value_argument_nodes {
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2024-08-07 22:24:25 +00:00
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for node in value_nodes {
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let position = node.position;
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let value = if let Some(value) = self.run_node(node, variables)? {
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value
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} else {
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return Err(VmError::ExpectedValue { position });
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};
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value_arguments.push(value);
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}
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2024-08-07 22:39:28 +00:00
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}
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2024-08-07 22:24:25 +00:00
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2024-08-09 05:43:58 +00:00
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let function_call_return = function.call(None, Some(value_arguments)).map_err(
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|built_in_function_error| VmError::BuiltInFunctionError {
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error: built_in_function_error,
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position: right_span,
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},
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)?;
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2024-08-07 22:24:25 +00:00
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2024-08-08 17:49:40 +00:00
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return Ok(function_call_return);
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2024-08-07 22:24:25 +00:00
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}
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2024-08-05 18:58:58 +00:00
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Err(VmError::ExpectedIdentifierOrInteger {
|
|
|
|
position: right_span,
|
|
|
|
})
|
2024-08-05 18:31:08 +00:00
|
|
|
}
|
2024-08-05 02:15:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[derive(Clone, Debug, PartialEq)]
|
2024-08-07 23:03:50 +00:00
|
|
|
pub enum VmError {
|
|
|
|
AnaylyzerError(AnalyzerError),
|
2024-08-05 02:15:31 +00:00
|
|
|
ParseError(ParseError),
|
2024-08-09 04:49:17 +00:00
|
|
|
ValueError {
|
|
|
|
error: ValueError,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-05 04:40:51 +00:00
|
|
|
|
|
|
|
// Anaylsis Failures
|
|
|
|
// These should be prevented by running the analyzer before the VM
|
2024-08-09 05:43:58 +00:00
|
|
|
BuiltInFunctionError {
|
|
|
|
error: BuiltInFunctionError,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-09 04:49:17 +00:00
|
|
|
ExpectedIdentifier {
|
|
|
|
position: Span,
|
|
|
|
},
|
|
|
|
ExpectedIdentifierOrInteger {
|
|
|
|
position: Span,
|
|
|
|
},
|
|
|
|
ExpectedInteger {
|
|
|
|
position: Span,
|
|
|
|
},
|
|
|
|
ExpectedFunction {
|
|
|
|
actual: Value,
|
|
|
|
position: Span,
|
|
|
|
},
|
|
|
|
ExpectedList {
|
|
|
|
position: Span,
|
|
|
|
},
|
|
|
|
ExpectedValue {
|
|
|
|
position: Span,
|
|
|
|
},
|
|
|
|
UndefinedIdentifier {
|
|
|
|
identifier: Identifier,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-07 22:24:25 +00:00
|
|
|
}
|
|
|
|
|
2024-08-09 05:43:58 +00:00
|
|
|
impl VmError {
|
|
|
|
pub fn position(&self) -> Span {
|
|
|
|
match self {
|
|
|
|
Self::AnaylyzerError(analyzer_error) => analyzer_error.position(),
|
|
|
|
Self::ParseError(parse_error) => parse_error.position(),
|
|
|
|
Self::ValueError { position, .. } => *position,
|
|
|
|
Self::BuiltInFunctionError { position, .. } => *position,
|
|
|
|
Self::ExpectedIdentifier { position } => *position,
|
|
|
|
Self::ExpectedIdentifierOrInteger { position } => *position,
|
|
|
|
Self::ExpectedInteger { position } => *position,
|
|
|
|
Self::ExpectedFunction { position, .. } => *position,
|
|
|
|
Self::ExpectedList { position } => *position,
|
|
|
|
Self::ExpectedValue { position } => *position,
|
|
|
|
Self::UndefinedIdentifier { position, .. } => *position,
|
|
|
|
}
|
2024-08-07 22:24:25 +00:00
|
|
|
}
|
2024-08-05 02:15:31 +00:00
|
|
|
}
|
|
|
|
|
2024-08-07 23:03:50 +00:00
|
|
|
impl From<AnalyzerError> for VmError {
|
|
|
|
fn from(error: AnalyzerError) -> Self {
|
2024-08-07 15:38:08 +00:00
|
|
|
Self::AnaylyzerError(error)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2024-08-07 23:03:50 +00:00
|
|
|
impl From<ParseError> for VmError {
|
2024-08-05 04:40:51 +00:00
|
|
|
fn from(error: ParseError) -> Self {
|
|
|
|
Self::ParseError(error)
|
2024-08-05 02:15:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2024-08-09 00:58:56 +00:00
|
|
|
impl Error for VmError {
|
|
|
|
fn source(&self) -> Option<&(dyn Error + 'static)> {
|
|
|
|
match self {
|
|
|
|
Self::AnaylyzerError(analyzer_error) => Some(analyzer_error),
|
|
|
|
Self::ParseError(parse_error) => Some(parse_error),
|
2024-08-09 04:31:38 +00:00
|
|
|
Self::ValueError { error, .. } => Some(error),
|
2024-08-09 05:43:58 +00:00
|
|
|
Self::BuiltInFunctionError { error, .. } => Some(error),
|
2024-08-09 00:58:56 +00:00
|
|
|
_ => None,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Display for VmError {
|
|
|
|
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
|
|
|
|
match self {
|
|
|
|
Self::AnaylyzerError(analyzer_error) => write!(f, "{}", analyzer_error),
|
|
|
|
Self::ParseError(parse_error) => write!(f, "{}", parse_error),
|
2024-08-09 04:31:38 +00:00
|
|
|
Self::ValueError { error, .. } => write!(f, "{}", error),
|
2024-08-09 05:43:58 +00:00
|
|
|
Self::BuiltInFunctionError { error, .. } => {
|
|
|
|
write!(f, "{}", error)
|
2024-08-09 00:58:56 +00:00
|
|
|
}
|
|
|
|
Self::ExpectedFunction { actual, position } => {
|
|
|
|
write!(
|
|
|
|
f,
|
|
|
|
"Expected a function, but got: {} at position: {:?}",
|
|
|
|
actual, position
|
|
|
|
)
|
|
|
|
}
|
|
|
|
Self::ExpectedIdentifier { position } => {
|
|
|
|
write!(f, "Expected an identifier at position: {:?}", position)
|
|
|
|
}
|
|
|
|
Self::ExpectedIdentifierOrInteger { position } => {
|
|
|
|
write!(
|
|
|
|
f,
|
|
|
|
"Expected an identifier or integer at position: {:?}",
|
|
|
|
position
|
|
|
|
)
|
|
|
|
}
|
|
|
|
Self::ExpectedInteger { position } => {
|
|
|
|
write!(f, "Expected an integer at position: {:?}", position)
|
|
|
|
}
|
|
|
|
Self::ExpectedList { position } => {
|
|
|
|
write!(f, "Expected a list at position: {:?}", position)
|
|
|
|
}
|
|
|
|
Self::ExpectedValue { position } => {
|
|
|
|
write!(f, "Expected a value at position: {:?}", position)
|
|
|
|
}
|
2024-08-09 04:49:17 +00:00
|
|
|
Self::UndefinedIdentifier {
|
|
|
|
identifier,
|
|
|
|
position,
|
|
|
|
} => {
|
|
|
|
write!(
|
|
|
|
f,
|
|
|
|
"Undefined identifier: {} at position: {:?}",
|
|
|
|
identifier, position
|
|
|
|
)
|
|
|
|
}
|
2024-08-09 00:58:56 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2024-08-05 02:15:31 +00:00
|
|
|
#[cfg(test)]
|
|
|
|
mod tests {
|
|
|
|
use super::*;
|
|
|
|
|
2024-08-09 11:15:09 +00:00
|
|
|
#[test]
|
|
|
|
fn map_equal() {
|
2024-08-09 15:41:23 +00:00
|
|
|
let input = "{ y = 'foo', } == { y = 'foo', }";
|
2024-08-09 11:15:09 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(true)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn integer_equal() {
|
|
|
|
let input = "42 == 42";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(true)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
2024-08-09 11:02:55 +00:00
|
|
|
#[test]
|
|
|
|
fn modulo() {
|
|
|
|
let input = "42 % 2";
|
|
|
|
|
|
|
|
assert_eq!(run(input, &mut HashMap::new()), Ok(Some(Value::integer(0))));
|
|
|
|
}
|
|
|
|
|
2024-08-09 10:46:24 +00:00
|
|
|
#[test]
|
|
|
|
fn divide() {
|
|
|
|
let input = "42 / 2";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::integer(21)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
2024-08-09 07:00:48 +00:00
|
|
|
#[test]
|
|
|
|
fn less_than() {
|
|
|
|
let input = "2 < 3";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(true)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn less_than_or_equal() {
|
|
|
|
let input = "42 <= 42";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(true)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn greater_than() {
|
|
|
|
let input = "2 > 3";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(false)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn greater_than_or_equal() {
|
|
|
|
let input = "42 >= 42";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(true)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
2024-08-09 03:28:47 +00:00
|
|
|
#[test]
|
|
|
|
fn integer_saturating_add() {
|
|
|
|
let input = "9223372036854775807 + 1";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::integer(i64::MAX)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn integer_saturating_sub() {
|
|
|
|
let input = "-9223372036854775808 - 1";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::integer(i64::MIN)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn multiply() {
|
|
|
|
let input = "2 * 3";
|
|
|
|
|
|
|
|
assert_eq!(run(input, &mut HashMap::new()), Ok(Some(Value::integer(6))));
|
|
|
|
}
|
|
|
|
|
2024-08-07 14:50:19 +00:00
|
|
|
#[test]
|
|
|
|
fn boolean() {
|
|
|
|
let input = "true";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(true)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
2024-08-05 19:54:48 +00:00
|
|
|
#[test]
|
|
|
|
fn is_even() {
|
2024-08-07 22:24:25 +00:00
|
|
|
let input = "42.is_even()";
|
2024-08-05 19:54:48 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(true)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn is_odd() {
|
2024-08-07 22:24:25 +00:00
|
|
|
let input = "42.is_odd()";
|
2024-08-05 19:54:48 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
run(input, &mut HashMap::new()),
|
|
|
|
Ok(Some(Value::boolean(false)))
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
2024-08-05 18:58:58 +00:00
|
|
|
#[test]
|
2024-08-07 22:24:25 +00:00
|
|
|
fn length() {
|
|
|
|
let input = "[1, 2, 3].length()";
|
2024-08-05 18:58:58 +00:00
|
|
|
|
2024-08-07 22:24:25 +00:00
|
|
|
assert_eq!(run(input, &mut HashMap::new()), Ok(Some(Value::integer(3))));
|
2024-08-05 18:58:58 +00:00
|
|
|
}
|
|
|
|
|
2024-08-05 18:31:08 +00:00
|
|
|
#[test]
|
2024-08-07 22:24:25 +00:00
|
|
|
fn list_access() {
|
|
|
|
let input = "[1, 2, 3].1";
|
2024-08-05 18:31:08 +00:00
|
|
|
|
2024-08-07 22:24:25 +00:00
|
|
|
assert_eq!(run(input, &mut HashMap::new()), Ok(Some(Value::integer(2))));
|
2024-08-05 18:31:08 +00:00
|
|
|
}
|
|
|
|
|
2024-08-05 02:15:31 +00:00
|
|
|
#[test]
|
|
|
|
fn add() {
|
|
|
|
let input = "1 + 2";
|
|
|
|
|
2024-08-05 04:40:51 +00:00
|
|
|
assert_eq!(run(input, &mut HashMap::new()), Ok(Some(Value::integer(3))));
|
2024-08-05 02:15:31 +00:00
|
|
|
}
|
2024-08-05 03:11:04 +00:00
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn add_multiple() {
|
2024-08-05 04:40:51 +00:00
|
|
|
let input = "1 + 2 + 3";
|
2024-08-05 03:11:04 +00:00
|
|
|
|
2024-08-05 04:40:51 +00:00
|
|
|
assert_eq!(run(input, &mut HashMap::new()), Ok(Some(Value::integer(6))));
|
2024-08-05 03:11:04 +00:00
|
|
|
}
|
2024-08-05 02:15:31 +00:00
|
|
|
}
|