2024-08-09 02:44:34 +00:00
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//! Tools for analyzing an abstract syntax tree and catch errors before running the virtual
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//! machine.
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//!
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//! This module provides to anlysis options, both of which borrow an abstract syntax tree and a
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//! hash map of variables:
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//! - `analyze` convenience function
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//! - `Analyzer` struct
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2024-08-09 00:58:56 +00:00
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use std::{
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error::Error,
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fmt::{self, Display, Formatter},
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};
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2024-08-07 15:57:15 +00:00
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2024-08-09 08:23:02 +00:00
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use crate::{
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2024-08-11 23:00:37 +00:00
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abstract_tree::BinaryOperator, parse, AbstractSyntaxTree, Context, DustError, Node, Span,
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Statement, Type,
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2024-08-09 08:23:02 +00:00
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};
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2024-08-07 15:57:15 +00:00
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/// Analyzes the abstract syntax tree for errors.
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///
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/// # Examples
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/// ```
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/// # use std::collections::HashMap;
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/// # use dust_lang::*;
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/// let input = "x = 1 + false";
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2024-08-11 23:00:37 +00:00
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/// let result = analyze(input);
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2024-08-07 15:57:15 +00:00
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///
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/// assert!(result.is_err());
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/// ```
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2024-08-11 23:00:37 +00:00
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pub fn analyze(source: &str) -> Result<(), DustError> {
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2024-08-11 21:59:52 +00:00
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let abstract_tree = parse(source)?;
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2024-08-11 23:00:37 +00:00
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let mut context = Context::new();
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let mut analyzer = Analyzer::new(&abstract_tree, &mut context);
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2024-08-11 21:59:52 +00:00
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analyzer
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.analyze()
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.map_err(|analyzer_error| DustError::AnalyzerError {
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analyzer_error,
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source,
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})
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2024-08-05 04:40:51 +00:00
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}
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2024-08-07 16:13:49 +00:00
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/// Static analyzer that checks for potential runtime errors.
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///
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/// # Examples
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/// ```
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/// # use std::collections::HashMap;
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/// # use dust_lang::*;
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/// let input = "x = 1 + false";
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/// let abstract_tree = parse(input).unwrap();
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2024-08-10 08:32:27 +00:00
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/// let mut context = Context::new();
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/// let mut analyzer = Analyzer::new(&abstract_tree, &mut context);
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2024-08-07 16:13:49 +00:00
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/// let result = analyzer.analyze();
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///
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/// assert!(result.is_err());
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2024-08-07 23:03:50 +00:00
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pub struct Analyzer<'a> {
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abstract_tree: &'a AbstractSyntaxTree,
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2024-08-10 01:12:36 +00:00
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context: &'a mut Context,
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2024-08-05 03:11:04 +00:00
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}
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2024-08-07 23:03:50 +00:00
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impl<'a> Analyzer<'a> {
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2024-08-10 01:12:36 +00:00
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pub fn new(abstract_tree: &'a AbstractSyntaxTree, context: &'a mut Context) -> Self {
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2024-08-07 15:57:15 +00:00
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Self {
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abstract_tree,
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2024-08-10 01:12:36 +00:00
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context,
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2024-08-07 15:57:15 +00:00
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}
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2024-08-05 03:11:04 +00:00
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}
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2024-08-10 01:12:36 +00:00
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pub fn analyze(&mut self) -> Result<(), AnalyzerError> {
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2024-08-07 15:38:08 +00:00
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for node in &self.abstract_tree.nodes {
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2024-08-05 03:11:04 +00:00
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self.analyze_node(node)?;
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}
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Ok(())
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}
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2024-08-10 01:12:36 +00:00
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fn analyze_node(&mut self, node: &Node<Statement>) -> Result<(), AnalyzerError> {
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2024-08-09 07:00:48 +00:00
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match &node.inner {
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2024-08-09 08:23:02 +00:00
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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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2024-08-10 01:12:36 +00:00
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if let BinaryOperator::Assign = operator.inner {
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if let Statement::Identifier(identifier) = &left.inner {
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2024-08-10 00:24:18 +00:00
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self.analyze_node(right)?;
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2024-08-10 01:12:36 +00:00
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let right_type = right.inner.expected_type(self.context);
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self.context.set_type(
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identifier.clone(),
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right_type.ok_or(AnalyzerError::ExpectedValue {
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actual: right.as_ref().clone(),
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})?,
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);
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2024-08-09 22:14:46 +00:00
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return Ok(());
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}
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}
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2024-08-10 00:24:18 +00:00
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self.analyze_node(left)?;
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self.analyze_node(right)?;
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2024-08-10 01:12:36 +00:00
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let left_type = left.inner.expected_type(self.context);
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let right_type = right.inner.expected_type(self.context);
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2024-08-09 08:56:24 +00:00
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if let BinaryOperator::Add
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| BinaryOperator::Subtract
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| BinaryOperator::Multiply
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| BinaryOperator::Divide
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| BinaryOperator::Greater
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| BinaryOperator::GreaterOrEqual
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| BinaryOperator::Less
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| BinaryOperator::LessOrEqual = operator.inner
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{
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2024-08-11 23:00:37 +00:00
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if let Some(expected_type) = left_type {
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if let Some(actual_type) = right_type {
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expected_type.check(&actual_type).map_err(|conflict| {
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AnalyzerError::TypeConflict {
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actual_statement: right.as_ref().clone(),
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actual_type: conflict.actual,
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expected: conflict.expected,
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}
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})?;
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} else {
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return Err(AnalyzerError::ExpectedValue {
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2024-08-09 08:56:24 +00:00
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actual: right.as_ref().clone(),
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});
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}
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}
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}
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2024-08-09 07:00:48 +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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for statement in statements {
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self.analyze_node(statement)?;
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}
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}
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2024-08-11 22:11:59 +00:00
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Statement::BuiltInFunctionCall {
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function,
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value_arguments,
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..
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} => {
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let value_parameters = function.value_parameters();
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if let Some(arguments) = value_arguments {
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for argument in arguments {
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self.analyze_node(argument)?;
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}
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if arguments.len() != value_parameters.len() {
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return Err(AnalyzerError::ExpectedValueArgumentCount {
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expected: value_parameters.len(),
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actual: arguments.len(),
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position: node.position,
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});
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}
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2024-08-11 23:00:37 +00:00
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for ((_identifier, parameter_type), argument) in
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value_parameters.iter().zip(arguments)
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{
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let argument_type_option = argument.inner.expected_type(self.context);
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if let Some(argument_type) = argument_type_option {
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parameter_type.check(&argument_type).map_err(|conflict| {
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AnalyzerError::TypeConflict {
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actual_statement: argument.clone(),
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actual_type: conflict.actual,
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expected: parameter_type.clone(),
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}
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})?;
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} else {
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return Err(AnalyzerError::ExpectedValue {
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actual: argument.clone(),
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});
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}
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}
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if arguments.is_empty() && !value_parameters.is_empty() {
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return Err(AnalyzerError::ExpectedValueArgumentCount {
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expected: value_parameters.len(),
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actual: 0,
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position: node.position,
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});
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}
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} else if !value_parameters.is_empty() {
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return Err(AnalyzerError::ExpectedValueArgumentCount {
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expected: value_parameters.len(),
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actual: 0,
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position: node.position,
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});
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2024-08-11 22:11:59 +00:00
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}
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}
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2024-08-05 03:11:04 +00:00
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Statement::Constant(_) => {}
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2024-08-07 22:24:25 +00:00
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Statement::FunctionCall { function, .. } => {
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2024-08-09 07:00:48 +00:00
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if let Statement::Identifier(_) = &function.inner {
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2024-08-07 22:24:25 +00:00
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// Function is in the correct position
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} else {
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return Err(AnalyzerError::ExpectedIdentifier {
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actual: function.as_ref().clone(),
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2024-08-09 01:47:49 +00:00
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position: function.position,
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2024-08-07 22:24:25 +00:00
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});
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}
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}
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2024-08-09 22:14:46 +00:00
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Statement::Identifier(identifier) => {
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2024-08-10 08:45:30 +00:00
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let exists = self.context.add_allowed_use(identifier);
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if !exists {
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2024-08-09 22:14:46 +00:00
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return Err(AnalyzerError::UndefinedVariable {
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identifier: node.clone(),
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});
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}
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2024-08-05 04:40:51 +00:00
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}
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2024-08-11 18:35:33 +00:00
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Statement::If { condition, body } => {
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self.analyze_node(condition)?;
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if let Some(Type::Boolean) = condition.inner.expected_type(self.context) {
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// Condition is valid
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} else {
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return Err(AnalyzerError::ExpectedBoolean {
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actual: condition.as_ref().clone(),
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position: condition.position,
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});
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}
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self.analyze_node(body)?;
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}
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Statement::IfElse {
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condition,
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if_body,
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else_body,
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} => {
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self.analyze_node(condition)?;
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if let Some(Type::Boolean) = condition.inner.expected_type(self.context) {
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// Condition is valid
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} else {
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return Err(AnalyzerError::ExpectedBoolean {
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actual: condition.as_ref().clone(),
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position: condition.position,
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});
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}
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self.analyze_node(if_body)?;
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self.analyze_node(else_body)?;
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}
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Statement::IfElseIf {
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condition,
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if_body,
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else_ifs,
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} => {
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self.analyze_node(condition)?;
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if let Some(Type::Boolean) = condition.inner.expected_type(self.context) {
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// Condition is valid
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} else {
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return Err(AnalyzerError::ExpectedBoolean {
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actual: condition.as_ref().clone(),
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position: condition.position,
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});
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}
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self.analyze_node(if_body)?;
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for (condition, body) in else_ifs {
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self.analyze_node(condition)?;
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if let Some(Type::Boolean) = condition.inner.expected_type(self.context) {
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// Condition is valid
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} else {
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return Err(AnalyzerError::ExpectedBoolean {
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actual: condition.clone(),
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position: condition.position,
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});
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}
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self.analyze_node(body)?;
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}
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}
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Statement::IfElseIfElse {
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condition,
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if_body,
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else_ifs,
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else_body,
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} => {
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self.analyze_node(condition)?;
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if let Some(Type::Boolean) = condition.inner.expected_type(self.context) {
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// Condition is valid
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} else {
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return Err(AnalyzerError::ExpectedBoolean {
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actual: condition.as_ref().clone(),
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position: condition.position,
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});
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}
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self.analyze_node(if_body)?;
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for (condition, body) in else_ifs {
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self.analyze_node(condition)?;
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if let Some(Type::Boolean) = condition.inner.expected_type(self.context) {
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// Condition is valid
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} else {
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return Err(AnalyzerError::ExpectedBoolean {
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actual: condition.clone(),
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position: condition.position,
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});
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}
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self.analyze_node(body)?;
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}
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self.analyze_node(else_body)?;
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}
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2024-08-05 04:40:51 +00:00
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Statement::List(statements) => {
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for statement in statements {
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self.analyze_node(statement)?;
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2024-08-05 03:11:04 +00:00
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}
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}
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2024-08-09 10:09:59 +00:00
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Statement::Map(properties) => {
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for (_key, value_node) in properties {
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self.analyze_node(value_node)?;
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}
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}
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2024-08-10 09:23:43 +00:00
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Statement::Nil(node) => {
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self.analyze_node(node)?;
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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 15:57:15 +00:00
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if let Statement::Identifier(_) | Statement::Constant(_) | Statement::List(_) =
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2024-08-09 07:00:48 +00:00
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&left.inner
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2024-08-07 15:57:15 +00:00
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{
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// Left side is valid
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2024-08-05 18:31:08 +00:00
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} else {
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2024-08-09 08:23:02 +00:00
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return Err(AnalyzerError::ExpectedValue {
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2024-08-05 18:31:08 +00:00
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actual: left.as_ref().clone(),
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});
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}
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2024-08-11 23:00:37 +00:00
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self.analyze_node(left)?;
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2024-08-07 14:03:33 +00:00
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self.analyze_node(right)?;
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2024-08-05 18:31:08 +00:00
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}
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2024-08-10 09:23:43 +00:00
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Statement::While { condition, body } => {
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self.analyze_node(condition)?;
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self.analyze_node(body)?;
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if let Some(Type::Boolean) = condition.inner.expected_type(self.context) {
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} else {
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return Err(AnalyzerError::ExpectedBoolean {
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actual: condition.as_ref().clone(),
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position: condition.position,
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|
|
|
});
|
|
|
|
}
|
2024-08-09 15:41:23 +00:00
|
|
|
}
|
2024-08-05 03:11:04 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[derive(Clone, Debug, PartialEq)]
|
2024-08-07 23:03:50 +00:00
|
|
|
pub enum AnalyzerError {
|
2024-08-09 07:00:48 +00:00
|
|
|
ExpectedBoolean {
|
|
|
|
actual: Node<Statement>,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-09 08:23:02 +00:00
|
|
|
ExpectedFloat {
|
|
|
|
actual: Node<Statement>,
|
|
|
|
position: (usize, usize),
|
|
|
|
},
|
2024-08-09 07:00:48 +00:00
|
|
|
ExpectedFunction {
|
|
|
|
actual: Node<Statement>,
|
|
|
|
position: Span,
|
|
|
|
},
|
|
|
|
ExpectedIdentifier {
|
|
|
|
actual: Node<Statement>,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-09 08:23:02 +00:00
|
|
|
ExpectedInteger {
|
2024-08-09 07:00:48 +00:00
|
|
|
actual: Node<Statement>,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-11 23:00:37 +00:00
|
|
|
ExpectedNumber {
|
2024-08-09 07:00:48 +00:00
|
|
|
actual: Node<Statement>,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-11 23:00:37 +00:00
|
|
|
ExpectedNumberOrString {
|
2024-08-09 07:00:48 +00:00
|
|
|
actual: Node<Statement>,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-09 08:23:02 +00:00
|
|
|
ExpectedString {
|
|
|
|
actual: Node<Statement>,
|
|
|
|
position: (usize, usize),
|
|
|
|
},
|
|
|
|
ExpectedValue {
|
|
|
|
actual: Node<Statement>,
|
|
|
|
},
|
2024-08-11 22:11:59 +00:00
|
|
|
ExpectedValueArgumentCount {
|
|
|
|
expected: usize,
|
|
|
|
actual: usize,
|
|
|
|
position: Span,
|
|
|
|
},
|
2024-08-11 23:00:37 +00:00
|
|
|
TypeConflict {
|
|
|
|
actual_statement: Node<Statement>,
|
|
|
|
actual_type: Type,
|
|
|
|
expected: Type,
|
|
|
|
},
|
2024-08-09 22:14:46 +00:00
|
|
|
UndefinedVariable {
|
|
|
|
identifier: Node<Statement>,
|
|
|
|
},
|
2024-08-09 07:00:48 +00:00
|
|
|
UnexpectedIdentifier {
|
|
|
|
identifier: Node<Statement>,
|
|
|
|
},
|
2024-08-09 08:23:02 +00:00
|
|
|
UnexectedString {
|
|
|
|
actual: Node<Statement>,
|
|
|
|
},
|
2024-08-05 03:11:04 +00:00
|
|
|
}
|
|
|
|
|
2024-08-09 05:43:58 +00:00
|
|
|
impl AnalyzerError {
|
|
|
|
pub fn position(&self) -> Span {
|
|
|
|
match self {
|
|
|
|
AnalyzerError::ExpectedBoolean { position, .. } => *position,
|
2024-08-09 08:23:02 +00:00
|
|
|
AnalyzerError::ExpectedFloat { position, .. } => *position,
|
2024-08-09 05:43:58 +00:00
|
|
|
AnalyzerError::ExpectedFunction { position, .. } => *position,
|
|
|
|
AnalyzerError::ExpectedIdentifier { position, .. } => *position,
|
2024-08-11 23:00:37 +00:00
|
|
|
AnalyzerError::ExpectedValue { actual } => actual.position,
|
2024-08-09 08:23:02 +00:00
|
|
|
AnalyzerError::ExpectedInteger { position, .. } => *position,
|
2024-08-11 23:00:37 +00:00
|
|
|
AnalyzerError::ExpectedNumber { position, .. } => *position,
|
|
|
|
AnalyzerError::ExpectedNumberOrString { position, .. } => *position,
|
2024-08-09 08:23:02 +00:00
|
|
|
AnalyzerError::ExpectedString { position, .. } => *position,
|
2024-08-11 22:11:59 +00:00
|
|
|
AnalyzerError::ExpectedValueArgumentCount { position, .. } => *position,
|
2024-08-11 23:00:37 +00:00
|
|
|
AnalyzerError::TypeConflict {
|
|
|
|
actual_statement, ..
|
|
|
|
} => actual_statement.position,
|
2024-08-09 22:14:46 +00:00
|
|
|
AnalyzerError::UndefinedVariable { identifier } => identifier.position,
|
2024-08-11 23:00:37 +00:00
|
|
|
AnalyzerError::UnexpectedIdentifier { identifier } => identifier.position,
|
|
|
|
AnalyzerError::UnexectedString { actual } => actual.position,
|
2024-08-09 05:43:58 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2024-08-09 00:58:56 +00:00
|
|
|
impl Error for AnalyzerError {}
|
|
|
|
|
|
|
|
impl Display for AnalyzerError {
|
|
|
|
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
|
|
|
|
match self {
|
2024-08-09 01:47:49 +00:00
|
|
|
AnalyzerError::ExpectedBoolean { actual, .. } => {
|
2024-08-09 00:58:56 +00:00
|
|
|
write!(f, "Expected boolean, found {}", actual)
|
|
|
|
}
|
2024-08-09 01:47:49 +00:00
|
|
|
AnalyzerError::ExpectedFunction { actual, .. } => {
|
2024-08-09 00:58:56 +00:00
|
|
|
write!(f, "Expected function, found {}", actual)
|
|
|
|
}
|
2024-08-09 08:23:02 +00:00
|
|
|
AnalyzerError::ExpectedFloat { actual, .. } => {
|
|
|
|
write!(f, "Expected float, found {}", actual)
|
|
|
|
}
|
2024-08-09 01:47:49 +00:00
|
|
|
AnalyzerError::ExpectedIdentifier { actual, .. } => {
|
2024-08-09 00:58:56 +00:00
|
|
|
write!(f, "Expected identifier, found {}", actual)
|
|
|
|
}
|
2024-08-09 08:23:02 +00:00
|
|
|
AnalyzerError::ExpectedInteger { actual, .. } => {
|
|
|
|
write!(f, "Expected integer, found {}", actual)
|
2024-08-09 00:58:56 +00:00
|
|
|
}
|
2024-08-11 23:00:37 +00:00
|
|
|
AnalyzerError::ExpectedNumber { actual, .. } => {
|
2024-08-09 00:58:56 +00:00
|
|
|
write!(f, "Expected integer or float, found {}", actual)
|
|
|
|
}
|
2024-08-11 23:00:37 +00:00
|
|
|
AnalyzerError::ExpectedNumberOrString { actual, .. } => {
|
2024-08-09 00:58:56 +00:00
|
|
|
write!(f, "Expected integer, float, or string, found {}", actual)
|
|
|
|
}
|
2024-08-09 08:23:02 +00:00
|
|
|
AnalyzerError::ExpectedString { actual, .. } => {
|
|
|
|
write!(f, "Expected string, found {}", actual)
|
|
|
|
}
|
|
|
|
AnalyzerError::ExpectedValue { actual, .. } => {
|
|
|
|
write!(f, "Expected value, found {}", actual)
|
|
|
|
}
|
2024-08-11 22:11:59 +00:00
|
|
|
AnalyzerError::ExpectedValueArgumentCount {
|
|
|
|
expected, actual, ..
|
|
|
|
} => write!(f, "Expected {} value arguments, found {}", expected, actual),
|
2024-08-11 23:00:37 +00:00
|
|
|
AnalyzerError::TypeConflict {
|
|
|
|
actual_statement,
|
|
|
|
actual_type,
|
|
|
|
expected,
|
|
|
|
} => {
|
|
|
|
write!(
|
|
|
|
f,
|
|
|
|
"Expected type {}, found {}, which has type {}",
|
|
|
|
expected, actual_statement, actual_type
|
|
|
|
)
|
|
|
|
}
|
2024-08-09 22:14:46 +00:00
|
|
|
AnalyzerError::UndefinedVariable { identifier } => {
|
|
|
|
write!(f, "Undefined variable {}", identifier)
|
|
|
|
}
|
2024-08-09 01:47:49 +00:00
|
|
|
AnalyzerError::UnexpectedIdentifier { identifier, .. } => {
|
2024-08-09 00:58:56 +00:00
|
|
|
write!(f, "Unexpected identifier {}", identifier)
|
|
|
|
}
|
2024-08-09 08:23:02 +00:00
|
|
|
AnalyzerError::UnexectedString { actual, .. } => {
|
|
|
|
write!(f, "Unexpected string {}", actual)
|
|
|
|
}
|
2024-08-09 00:58:56 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2024-08-05 03:11:04 +00:00
|
|
|
#[cfg(test)]
|
|
|
|
mod tests {
|
2024-08-08 17:01:25 +00:00
|
|
|
use crate::{BuiltInFunction, Identifier, Value};
|
2024-08-05 03:11:04 +00:00
|
|
|
|
|
|
|
use super::*;
|
|
|
|
|
2024-08-11 21:59:52 +00:00
|
|
|
#[test]
|
2024-08-11 23:00:37 +00:00
|
|
|
fn is_even_wrong_type() {
|
|
|
|
let source = "is_even('hello')";
|
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
analyze(source),
|
|
|
|
Err(DustError::AnalyzerError {
|
|
|
|
analyzer_error: AnalyzerError::ExpectedInteger {
|
|
|
|
actual: Node::new(Statement::Constant(Value::string("hello")), (1, 1)),
|
|
|
|
position: (1, 1)
|
2024-08-11 21:59:52 +00:00
|
|
|
},
|
2024-08-11 23:00:37 +00:00
|
|
|
source
|
|
|
|
})
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn length_no_arguments() {
|
|
|
|
let source = "length()";
|
2024-08-11 21:59:52 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
2024-08-11 23:00:37 +00:00
|
|
|
analyze(source),
|
|
|
|
Err(DustError::AnalyzerError {
|
|
|
|
analyzer_error: AnalyzerError::ExpectedValueArgumentCount {
|
|
|
|
expected: 1,
|
|
|
|
actual: 0,
|
|
|
|
position: (0, 6)
|
|
|
|
},
|
|
|
|
source
|
2024-08-11 21:59:52 +00:00
|
|
|
})
|
2024-08-11 23:00:37 +00:00
|
|
|
);
|
2024-08-11 21:59:52 +00:00
|
|
|
}
|
|
|
|
|
2024-08-08 17:01:25 +00:00
|
|
|
#[test]
|
2024-08-09 08:56:24 +00:00
|
|
|
fn float_plus_integer() {
|
2024-08-11 23:00:37 +00:00
|
|
|
let source = "42.0 + 2";
|
2024-08-08 17:21:27 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
2024-08-11 23:00:37 +00:00
|
|
|
analyze(source),
|
|
|
|
Err(DustError::AnalyzerError {
|
|
|
|
analyzer_error: AnalyzerError::TypeConflict {
|
|
|
|
actual_statement: Node::new(Statement::Constant(Value::integer(2)), (7, 8)),
|
|
|
|
actual_type: Type::Integer,
|
|
|
|
expected: Type::Float,
|
|
|
|
},
|
|
|
|
source
|
2024-08-08 17:21:27 +00:00
|
|
|
})
|
|
|
|
)
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
2024-08-09 08:56:24 +00:00
|
|
|
fn integer_plus_boolean() {
|
2024-08-08 17:21:27 +00:00
|
|
|
let abstract_tree = AbstractSyntaxTree {
|
|
|
|
nodes: [Node::new(
|
2024-08-09 08:23:02 +00:00
|
|
|
Statement::BinaryOperation {
|
|
|
|
left: Box::new(Node::new(Statement::Constant(Value::integer(1)), (0, 1))),
|
|
|
|
operator: Node::new(BinaryOperator::Add, (1, 2)),
|
|
|
|
right: Box::new(Node::new(Statement::Constant(Value::boolean(true)), (3, 4))),
|
|
|
|
},
|
2024-08-08 17:01:25 +00:00
|
|
|
(0, 2),
|
|
|
|
)]
|
|
|
|
.into(),
|
|
|
|
};
|
2024-08-10 01:12:36 +00:00
|
|
|
let mut context = Context::new();
|
|
|
|
let mut analyzer = Analyzer::new(&abstract_tree, &mut context);
|
2024-08-08 17:01:25 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
analyzer.analyze(),
|
2024-08-09 08:56:24 +00:00
|
|
|
Err(AnalyzerError::ExpectedInteger {
|
|
|
|
actual: Node::new(Statement::Constant(Value::boolean(true)), (3, 4)),
|
|
|
|
position: (3, 4)
|
2024-08-08 17:01:25 +00:00
|
|
|
})
|
|
|
|
)
|
|
|
|
}
|
2024-08-08 17:21:27 +00:00
|
|
|
|
2024-08-08 17:01:25 +00:00
|
|
|
#[test]
|
2024-08-08 17:21:27 +00:00
|
|
|
fn is_even_expects_number() {
|
2024-08-08 17:01:25 +00:00
|
|
|
let abstract_tree = AbstractSyntaxTree {
|
|
|
|
nodes: [Node::new(
|
|
|
|
Statement::PropertyAccess(
|
|
|
|
Box::new(Node::new(Statement::Constant(Value::boolean(true)), (0, 1))),
|
|
|
|
Box::new(Node::new(
|
|
|
|
Statement::BuiltInFunctionCall {
|
2024-08-08 17:21:27 +00:00
|
|
|
function: BuiltInFunction::IsEven,
|
2024-08-08 17:01:25 +00:00
|
|
|
type_arguments: None,
|
|
|
|
value_arguments: None,
|
|
|
|
},
|
|
|
|
(1, 2),
|
|
|
|
)),
|
|
|
|
),
|
|
|
|
(0, 2),
|
|
|
|
)]
|
|
|
|
.into(),
|
|
|
|
};
|
2024-08-10 01:12:36 +00:00
|
|
|
let mut context = Context::new();
|
|
|
|
let mut analyzer = Analyzer::new(&abstract_tree, &mut context);
|
2024-08-08 17:01:25 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
analyzer.analyze(),
|
2024-08-11 23:00:37 +00:00
|
|
|
Err(AnalyzerError::ExpectedNumber {
|
2024-08-09 01:47:49 +00:00
|
|
|
actual: Node::new(Statement::Constant(Value::boolean(true)), (0, 1)),
|
|
|
|
position: (0, 1)
|
2024-08-08 17:01:25 +00:00
|
|
|
})
|
|
|
|
)
|
|
|
|
}
|
2024-08-05 03:11:04 +00:00
|
|
|
#[test]
|
2024-08-08 17:21:27 +00:00
|
|
|
fn is_odd_expects_number() {
|
2024-08-07 15:38:08 +00:00
|
|
|
let abstract_tree = AbstractSyntaxTree {
|
|
|
|
nodes: [Node::new(
|
2024-08-08 17:21:27 +00:00
|
|
|
Statement::PropertyAccess(
|
|
|
|
Box::new(Node::new(Statement::Constant(Value::boolean(true)), (0, 1))),
|
2024-08-07 15:57:15 +00:00
|
|
|
Box::new(Node::new(
|
2024-08-08 17:21:27 +00:00
|
|
|
Statement::BuiltInFunctionCall {
|
|
|
|
function: BuiltInFunction::IsOdd,
|
|
|
|
type_arguments: None,
|
|
|
|
value_arguments: None,
|
|
|
|
},
|
2024-08-07 15:57:15 +00:00
|
|
|
(1, 2),
|
|
|
|
)),
|
2024-08-07 15:38:08 +00:00
|
|
|
),
|
|
|
|
(0, 2),
|
|
|
|
)]
|
|
|
|
.into(),
|
|
|
|
};
|
2024-08-10 01:12:36 +00:00
|
|
|
let mut context = Context::new();
|
|
|
|
let mut analyzer = Analyzer::new(&abstract_tree, &mut context);
|
2024-08-05 03:11:04 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
analyzer.analyze(),
|
2024-08-11 23:00:37 +00:00
|
|
|
Err(AnalyzerError::ExpectedNumber {
|
2024-08-09 01:47:49 +00:00
|
|
|
actual: Node::new(Statement::Constant(Value::boolean(true)), (0, 1)),
|
|
|
|
position: (0, 1)
|
2024-08-05 03:11:04 +00:00
|
|
|
})
|
|
|
|
)
|
|
|
|
}
|
2024-08-05 04:40:51 +00:00
|
|
|
|
2024-08-07 15:57:15 +00:00
|
|
|
#[test]
|
2024-08-09 22:14:46 +00:00
|
|
|
fn undefined_variable() {
|
2024-08-07 15:57:15 +00:00
|
|
|
let abstract_tree = AbstractSyntaxTree {
|
|
|
|
nodes: [Node::new(
|
|
|
|
Statement::Identifier(Identifier::new("x")),
|
|
|
|
(0, 1),
|
|
|
|
)]
|
|
|
|
.into(),
|
|
|
|
};
|
2024-08-10 01:12:36 +00:00
|
|
|
let mut context = Context::new();
|
|
|
|
let mut analyzer = Analyzer::new(&abstract_tree, &mut context);
|
2024-08-05 04:40:51 +00:00
|
|
|
|
|
|
|
assert_eq!(
|
|
|
|
analyzer.analyze(),
|
2024-08-09 22:14:46 +00:00
|
|
|
Err(AnalyzerError::UndefinedVariable {
|
|
|
|
identifier: Node::new(Statement::Identifier(Identifier::new("x")), (0, 1))
|
2024-08-05 04:40:51 +00:00
|
|
|
})
|
|
|
|
)
|
|
|
|
}
|
2024-08-05 03:11:04 +00:00
|
|
|
}
|