Allow duplicated switch cases.
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4b760d1d0f
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7dca916c45
@ -14,10 +14,17 @@ New features
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Enhancements
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------------
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### `switch` statement
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* `switch` cases can now include multiple values separated by `|`.
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* Duplicated `switch` cases are now allowed.
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* The error `ParseErrorType::DuplicatedSwitchCase` is deprecated.
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* Ranges in `switch` statements that are small (currently no more than 16 items) are unrolled if possible.
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### Others
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* `EvalContext::eval_expression_tree_raw` and `Expression::eval_with_context_raw` are added to allow for not rewinding the `Scope` at the end of a statements block.
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* A new `range` function variant that takes an exclusive range with a step.
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* Ranges in `switch` statements that are small (currently no more than 16 items) are unrolled if possible.
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Version 1.8.0
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@ -22,8 +22,8 @@ pub use script_fn::EncapsulatedEnviron;
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#[cfg(not(feature = "no_function"))]
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pub use script_fn::{ScriptFnDef, ScriptFnMetadata};
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pub use stmt::{
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ConditionalStmtBlock, OpAssignment, RangeCase, Stmt, StmtBlock, StmtBlockContainer,
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SwitchCases, TryCatchBlock,
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CaseBlocksList, ConditionalStmtBlock, OpAssignment, RangeCase, Stmt, StmtBlock,
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StmtBlockContainer, SwitchCasesCollection, TryCatchBlock,
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};
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#[cfg(not(feature = "no_float"))]
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@ -176,14 +176,14 @@ impl fmt::Debug for RangeCase {
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impl From<Range<INT>> for RangeCase {
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#[inline(always)]
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fn from(value: Range<INT>) -> Self {
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Self::ExclusiveInt(value, 0)
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Self::ExclusiveInt(value, usize::MAX)
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}
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}
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impl From<RangeInclusive<INT>> for RangeCase {
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#[inline(always)]
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fn from(value: RangeInclusive<INT>) -> Self {
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Self::InclusiveInt(value, 0)
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Self::InclusiveInt(value, usize::MAX)
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}
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}
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@ -256,14 +256,16 @@ impl RangeCase {
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}
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}
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pub type CaseBlocksList = smallvec::SmallVec<[usize; 1]>;
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/// _(internals)_ A type containing all cases for a `switch` statement.
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/// Exported under the `internals` feature only.
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#[derive(Debug, Clone, Hash)]
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pub struct SwitchCases {
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pub struct SwitchCasesCollection {
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/// List of [`ConditionalStmtBlock`]'s.
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pub blocks: StaticVec<ConditionalStmtBlock>,
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pub case_blocks: StaticVec<ConditionalStmtBlock>,
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/// Dictionary mapping value hashes to [`ConditionalStmtBlock`]'s.
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pub cases: BTreeMap<u64, usize>,
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pub cases: BTreeMap<u64, CaseBlocksList>,
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/// Statements block for the default case (there can be no condition for the default case).
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pub def_case: usize,
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/// List of range cases.
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@ -512,7 +514,7 @@ pub enum Stmt {
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/// 0) Hash table for (condition, block)
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/// 1) Default block
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/// 2) List of ranges: (start, end, inclusive, condition, statement)
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Switch(Box<(Expr, SwitchCases)>, Position),
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Switch(Box<(Expr, SwitchCasesCollection)>, Position),
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/// `while` expr `{` stmt `}` | `loop` `{` stmt `}`
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///
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/// If the guard expression is [`UNIT`][Expr::Unit], then it is a `loop` statement.
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@ -755,15 +757,18 @@ impl Stmt {
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Self::Switch(x, ..) => {
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let (expr, sw) = &**x;
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expr.is_pure()
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&& sw.cases.values().all(|&c| {
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let block = &sw.blocks[c];
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&& sw.cases.values().flat_map(|cases| cases.iter()).all(|&c| {
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let block = &sw.case_blocks[c];
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block.condition.is_pure() && block.statements.iter().all(Stmt::is_pure)
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})
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&& sw.ranges.iter().all(|r| {
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let block = &sw.blocks[r.index()];
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let block = &sw.case_blocks[r.index()];
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block.condition.is_pure() && block.statements.iter().all(Stmt::is_pure)
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})
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&& sw.blocks[sw.def_case].statements.iter().all(Stmt::is_pure)
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&& sw.case_blocks[sw.def_case]
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.statements
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.iter()
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.all(Stmt::is_pure)
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}
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// Loops that exit can be pure because it can never be infinite.
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@ -904,8 +909,9 @@ impl Stmt {
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if !expr.walk(path, on_node) {
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return false;
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}
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for (.., &b) in &sw.cases {
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let block = &sw.blocks[b];
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for (.., blocks) in &sw.cases {
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for &b in blocks {
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let block = &sw.case_blocks[b];
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if !block.condition.walk(path, on_node) {
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return false;
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@ -916,8 +922,9 @@ impl Stmt {
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}
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}
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}
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}
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for r in &sw.ranges {
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let block = &sw.blocks[r.index()];
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let block = &sw.case_blocks[r.index()];
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if !block.condition.walk(path, on_node) {
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return false;
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@ -928,7 +935,7 @@ impl Stmt {
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}
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}
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}
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for s in &sw.blocks[sw.def_case].statements {
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for s in &sw.case_blocks[sw.def_case].statements {
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if !s.walk(path, on_node) {
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return false;
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}
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@ -3,7 +3,7 @@
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use super::{Caches, EvalContext, GlobalRuntimeState, Target};
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use crate::api::events::VarDefInfo;
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use crate::ast::{
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ASTFlags, BinaryExpr, Expr, Ident, OpAssignment, Stmt, SwitchCases, TryCatchBlock,
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ASTFlags, BinaryExpr, Expr, Ident, OpAssignment, Stmt, SwitchCasesCollection, TryCatchBlock,
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};
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use crate::func::get_hasher;
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use crate::types::dynamic::{AccessMode, Union};
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@ -393,8 +393,8 @@ impl Engine {
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Stmt::Switch(x, ..) => {
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let (
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expr,
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SwitchCases {
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blocks,
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SwitchCasesCollection {
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case_blocks,
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cases,
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def_case,
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ranges,
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@ -411,32 +411,49 @@ impl Engine {
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let hash = hasher.finish();
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// First check hashes
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if let Some(&case_block) = cases.get(&hash) {
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let case_block = &blocks[case_block];
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if let Some(case_blocks_list) = cases.get(&hash) {
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assert!(!case_blocks_list.is_empty());
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let cond_result = match case_block.condition {
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let mut result = Ok(None);
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for &index in case_blocks_list {
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let block = &case_blocks[index];
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let cond_result = match block.condition {
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Expr::BoolConstant(b, ..) => Ok(b),
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ref c => self
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.eval_expr(scope, global, caches, lib, this_ptr, c, level)
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.and_then(|v| {
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v.as_bool().map_err(|typ| {
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self.make_type_mismatch_err::<bool>(typ, c.position())
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self.make_type_mismatch_err::<bool>(
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typ,
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c.position(),
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)
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})
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}),
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};
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match cond_result {
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Ok(true) => Ok(Some(&case_block.statements)),
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Ok(false) => Ok(None),
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_ => cond_result.map(|_| None),
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Ok(true) => {
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result = Ok(Some(&block.statements));
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break;
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}
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Ok(false) => (),
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_ => {
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result = cond_result.map(|_| None);
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break;
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}
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}
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}
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result
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} else if value.is::<INT>() && !ranges.is_empty() {
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// Then check integer ranges
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let value = value.as_int().expect("`INT`");
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let mut result = Ok(None);
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for r in ranges.iter().filter(|r| r.contains(value)) {
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let block = &blocks[r.index()];
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let block = &case_blocks[r.index()];
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let cond_result = match block.condition {
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Expr::BoolConstant(b, ..) => Ok(b),
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@ -481,7 +498,7 @@ impl Engine {
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}
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} else if let Ok(None) = stmt_block_result {
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// Default match clause
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let def_case = &blocks[*def_case].statements;
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let def_case = &case_blocks[*def_case].statements;
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if !def_case.is_empty() {
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self.eval_stmt_block(
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@ -285,7 +285,7 @@ pub use parser::ParseState;
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#[cfg(feature = "internals")]
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pub use ast::{
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ASTFlags, ASTNode, BinaryExpr, ConditionalStmtBlock, Expr, FnCallExpr, FnCallHashes, Ident,
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OpAssignment, RangeCase, ScriptFnDef, Stmt, StmtBlock, SwitchCases, TryCatchBlock,
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OpAssignment, RangeCase, ScriptFnDef, Stmt, StmtBlock, SwitchCasesCollection, TryCatchBlock,
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};
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#[cfg(feature = "internals")]
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103
src/optimizer.rs
103
src/optimizer.rs
@ -1,7 +1,9 @@
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//! Module implementing the [`AST`] optimizer.
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#![cfg(not(feature = "no_optimize"))]
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use crate::ast::{ASTFlags, Expr, OpAssignment, Stmt, StmtBlock, StmtBlockContainer, SwitchCases};
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use crate::ast::{
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ASTFlags, Expr, OpAssignment, Stmt, StmtBlock, StmtBlockContainer, SwitchCasesCollection,
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};
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use crate::engine::{KEYWORD_DEBUG, KEYWORD_EVAL, KEYWORD_FN_PTR, KEYWORD_PRINT, KEYWORD_TYPE_OF};
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use crate::eval::{Caches, GlobalRuntimeState};
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use crate::func::builtin::get_builtin_binary_op_fn;
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@ -524,8 +526,8 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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Stmt::Switch(x, pos) if x.0.is_constant() => {
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let (
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match_expr,
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SwitchCases {
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blocks,
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SwitchCasesCollection {
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case_blocks,
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cases,
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ranges,
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def_case,
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@ -538,25 +540,30 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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let hash = hasher.finish();
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// First check hashes
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if let Some(b) = cases.remove(&hash) {
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let mut b = mem::take(&mut blocks[b]);
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if let Some(case_blocks_list) = cases.get(&hash) {
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match &case_blocks_list[..] {
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[] => (),
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[index] => {
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let mut b = mem::take(&mut case_blocks[*index]);
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cases.clear();
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match b.condition {
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Expr::BoolConstant(true, ..) => {
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// Promote the matched case
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let statements: StmtBlockContainer = mem::take(&mut b.statements);
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let statements = optimize_stmt_block(statements, state, true, true, false);
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let statements =
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optimize_stmt_block(statements, state, true, true, false);
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*stmt = (statements, b.statements.span()).into();
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}
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ref mut condition => {
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// switch const { case if condition => stmt, _ => def } => if condition { stmt } else { def }
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optimize_expr(condition, state, false);
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let def_case = &mut blocks[*def_case].statements;
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let def_case = &mut case_blocks[*def_case].statements;
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let def_span = def_case.span_or_else(*pos, Position::NONE);
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let def_case: StmtBlockContainer = mem::take(def_case);
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let def_stmt = optimize_stmt_block(def_case, state, true, true, false);
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let def_stmt =
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optimize_stmt_block(def_case, state, true, true, false);
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*stmt = Stmt::If(
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(
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mem::take(condition),
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@ -572,6 +579,27 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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state.set_dirty();
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return;
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}
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_ => {
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for &index in case_blocks_list {
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let mut b = mem::take(&mut case_blocks[index]);
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match b.condition {
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Expr::BoolConstant(true, ..) => {
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// Promote the matched case
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let statements: StmtBlockContainer =
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mem::take(&mut b.statements);
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let statements =
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optimize_stmt_block(statements, state, true, true, false);
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*stmt = (statements, b.statements.span()).into();
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state.set_dirty();
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return;
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}
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_ => (),
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}
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}
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}
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}
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}
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// Then check ranges
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if value.is::<INT>() && !ranges.is_empty() {
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@ -580,16 +608,19 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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// Only one range or all ranges without conditions
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if ranges.len() == 1
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|| ranges.iter().all(|r| {
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matches!(blocks[r.index()].condition, Expr::BoolConstant(true, ..))
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matches!(
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case_blocks[r.index()].condition,
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Expr::BoolConstant(true, ..)
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)
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})
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{
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for r in ranges.iter().filter(|r| r.contains(value)) {
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let condition = mem::take(&mut blocks[r.index()].condition);
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let condition = mem::take(&mut case_blocks[r.index()].condition);
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match condition {
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Expr::BoolConstant(true, ..) => {
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// Promote the matched case
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let block = &mut blocks[r.index()];
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let block = &mut case_blocks[r.index()];
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let statements = mem::take(&mut *block.statements);
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let statements =
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optimize_stmt_block(statements, state, true, true, false);
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@ -599,13 +630,13 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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// switch const { range if condition => stmt, _ => def } => if condition { stmt } else { def }
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optimize_expr(&mut condition, state, false);
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let def_case = &mut blocks[*def_case].statements;
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let def_case = &mut case_blocks[*def_case].statements;
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let def_span = def_case.span_or_else(*pos, Position::NONE);
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let def_case: StmtBlockContainer = mem::take(def_case);
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let def_stmt =
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optimize_stmt_block(def_case, state, true, true, false);
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let statements = mem::take(&mut blocks[r.index()].statements);
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let statements = mem::take(&mut case_blocks[r.index()].statements);
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*stmt = Stmt::If(
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(
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@ -638,7 +669,7 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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}
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for r in &*ranges {
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let b = &mut blocks[r.index()];
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let b = &mut case_blocks[r.index()];
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let statements = mem::take(&mut *b.statements);
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*b.statements =
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optimize_stmt_block(statements, state, preserve_result, true, false);
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@ -659,7 +690,7 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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// Promote the default case
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state.set_dirty();
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let def_case = &mut blocks[*def_case].statements;
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let def_case = &mut case_blocks[*def_case].statements;
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let def_span = def_case.span_or_else(*pos, Position::NONE);
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let def_case: StmtBlockContainer = mem::take(def_case);
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let def_stmt = optimize_stmt_block(def_case, state, true, true, false);
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@ -669,8 +700,8 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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Stmt::Switch(x, ..) => {
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let (
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match_expr,
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SwitchCases {
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blocks,
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SwitchCasesCollection {
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case_blocks,
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cases,
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ranges,
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def_case,
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@ -681,7 +712,7 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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optimize_expr(match_expr, state, false);
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// Optimize blocks
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for b in blocks.iter_mut() {
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for b in case_blocks.iter_mut() {
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let statements = mem::take(&mut *b.statements);
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*b.statements =
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optimize_stmt_block(statements, state, preserve_result, true, false);
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@ -704,15 +735,31 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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}
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// Remove false cases
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cases.retain(|_, &mut block| match blocks[block].condition {
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Expr::BoolConstant(false, ..) => {
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state.set_dirty();
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false
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}
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let cases_len = cases.len();
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cases.retain(|_, list| {
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// Remove all entries that have false conditions
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list.retain(|index| match case_blocks[*index].condition {
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Expr::BoolConstant(false, ..) => false,
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_ => true,
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});
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// Remove all entries after a `true` condition
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if let Some(n) = list
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.iter()
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.find(|&&index| match case_blocks[index].condition {
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Expr::BoolConstant(true, ..) => true,
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_ => false,
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})
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{
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list.truncate(n + 1);
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}
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// Remove if no entry left
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!list.is_empty()
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});
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if cases.len() != cases_len {
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state.set_dirty();
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}
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// Remove false ranges
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ranges.retain(|r| match blocks[r.index()].condition {
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ranges.retain(|r| match case_blocks[r.index()].condition {
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Expr::BoolConstant(false, ..) => {
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state.set_dirty();
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false
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@ -720,20 +767,20 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
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_ => true,
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});
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let def_stmt_block = &mut blocks[*def_case].statements;
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let def_stmt_block = &mut case_blocks[*def_case].statements;
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let def_block = mem::take(&mut **def_stmt_block);
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**def_stmt_block = optimize_stmt_block(def_block, state, preserve_result, true, false);
|
||||
|
||||
// Remove unused block statements
|
||||
for index in 0..blocks.len() {
|
||||
for index in 0..case_blocks.len() {
|
||||
if *def_case == index
|
||||
|| cases.values().any(|&n| n == index)
|
||||
|| cases.values().flat_map(|c| c.iter()).any(|&n| n == index)
|
||||
|| ranges.iter().any(|r| r.index() == index)
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
let b = &mut blocks[index];
|
||||
let b = &mut case_blocks[index];
|
||||
|
||||
if !b.statements.is_empty() {
|
||||
b.statements = StmtBlock::NONE;
|
||||
|
@ -3,8 +3,9 @@
|
||||
use crate::api::events::VarDefInfo;
|
||||
use crate::api::options::LangOptions;
|
||||
use crate::ast::{
|
||||
ASTFlags, BinaryExpr, ConditionalStmtBlock, Expr, FnCallExpr, FnCallHashes, Ident,
|
||||
OpAssignment, RangeCase, ScriptFnDef, Stmt, StmtBlockContainer, SwitchCases, TryCatchBlock,
|
||||
ASTFlags, BinaryExpr, CaseBlocksList, ConditionalStmtBlock, Expr, FnCallExpr, FnCallHashes,
|
||||
Ident, OpAssignment, RangeCase, ScriptFnDef, Stmt, StmtBlockContainer, SwitchCasesCollection,
|
||||
TryCatchBlock,
|
||||
};
|
||||
use crate::engine::{Precedence, KEYWORD_THIS, OP_CONTAINS};
|
||||
use crate::eval::GlobalRuntimeState;
|
||||
@ -1054,11 +1055,11 @@ impl Engine {
|
||||
}
|
||||
}
|
||||
|
||||
let mut blocks = StaticVec::<ConditionalStmtBlock>::new();
|
||||
let mut cases = BTreeMap::<u64, usize>::new();
|
||||
let mut case_blocks = StaticVec::<ConditionalStmtBlock>::new();
|
||||
let mut cases = BTreeMap::<u64, CaseBlocksList>::new();
|
||||
let mut ranges = StaticVec::<RangeCase>::new();
|
||||
let mut def_pos = Position::NONE;
|
||||
let mut def_stmt = None;
|
||||
let mut def_stmt_pos = Position::NONE;
|
||||
let mut def_stmt_index = None;
|
||||
|
||||
loop {
|
||||
const MISSING_RBRACE: &str = "to end this switch block";
|
||||
@ -1074,8 +1075,8 @@ impl Engine {
|
||||
.into_err(*pos),
|
||||
)
|
||||
}
|
||||
(Token::Underscore, pos) if def_stmt.is_none() => {
|
||||
def_pos = *pos;
|
||||
(Token::Underscore, pos) if def_stmt_index.is_none() => {
|
||||
def_stmt_pos = *pos;
|
||||
eat_token(input, Token::Underscore);
|
||||
|
||||
let (if_clause, if_pos) = match_token(input, Token::If);
|
||||
@ -1086,10 +1087,8 @@ impl Engine {
|
||||
|
||||
(Default::default(), Expr::BoolConstant(true, Position::NONE))
|
||||
}
|
||||
(Token::Underscore, pos) => return Err(PERR::DuplicatedSwitchCase.into_err(*pos)),
|
||||
|
||||
_ if def_stmt.is_some() => {
|
||||
return Err(PERR::WrongSwitchDefaultCase.into_err(def_pos))
|
||||
_ if def_stmt_index.is_some() => {
|
||||
return Err(PERR::WrongSwitchDefaultCase.into_err(def_stmt_pos))
|
||||
}
|
||||
|
||||
_ => {
|
||||
@ -1143,8 +1142,8 @@ impl Engine {
|
||||
let need_comma = !stmt.is_self_terminated();
|
||||
let has_condition = !matches!(condition, Expr::BoolConstant(true, ..));
|
||||
|
||||
blocks.push((condition, stmt).into());
|
||||
let index = blocks.len() - 1;
|
||||
case_blocks.push((condition, stmt).into());
|
||||
let index = case_blocks.len() - 1;
|
||||
|
||||
if !case_expr_list.is_empty() {
|
||||
for expr in case_expr_list {
|
||||
@ -1170,7 +1169,10 @@ impl Engine {
|
||||
for n in r {
|
||||
let hasher = &mut get_hasher();
|
||||
Dynamic::from_int(n).hash(hasher);
|
||||
cases.entry(hasher.finish()).or_insert(index);
|
||||
cases
|
||||
.entry(hasher.finish())
|
||||
.and_modify(|cases| cases.push(index))
|
||||
.or_insert_with(|| [index].into());
|
||||
}
|
||||
} else {
|
||||
// Other range
|
||||
@ -1189,13 +1191,13 @@ impl Engine {
|
||||
value.hash(hasher);
|
||||
let hash = hasher.finish();
|
||||
|
||||
if cases.contains_key(&hash) {
|
||||
return Err(PERR::DuplicatedSwitchCase.into_err(expr.start_position()));
|
||||
}
|
||||
cases.insert(hash, index);
|
||||
cases
|
||||
.entry(hash)
|
||||
.and_modify(|cases| cases.push(index))
|
||||
.or_insert_with(|| [index].into());
|
||||
}
|
||||
} else {
|
||||
def_stmt = Some(index);
|
||||
def_stmt_index = Some(index);
|
||||
}
|
||||
|
||||
match input.peek().expect(NEVER_ENDS) {
|
||||
@ -1221,13 +1223,13 @@ impl Engine {
|
||||
}
|
||||
}
|
||||
|
||||
let def_case = def_stmt.unwrap_or_else(|| {
|
||||
blocks.push(Default::default());
|
||||
blocks.len() - 1
|
||||
let def_case = def_stmt_index.unwrap_or_else(|| {
|
||||
case_blocks.push(Default::default());
|
||||
case_blocks.len() - 1
|
||||
});
|
||||
|
||||
let cases = SwitchCases {
|
||||
blocks,
|
||||
let cases = SwitchCasesCollection {
|
||||
case_blocks,
|
||||
cases,
|
||||
def_case,
|
||||
ranges,
|
||||
|
@ -97,6 +97,14 @@ pub enum ParseErrorType {
|
||||
/// A map definition has duplicated property names. Wrapped value is the property name.
|
||||
DuplicatedProperty(String),
|
||||
/// A `switch` case is duplicated.
|
||||
///
|
||||
/// # Deprecated
|
||||
///
|
||||
/// This error variant is deprecated. It never occurs and will be removed in the next major version.
|
||||
#[deprecated(
|
||||
since = "1.9.0",
|
||||
note = "This error variant is deprecated. It never occurs and will be removed in the next major version."
|
||||
)]
|
||||
DuplicatedSwitchCase,
|
||||
/// A variable name is duplicated. Wrapped value is the variable name.
|
||||
DuplicatedVariable(String),
|
||||
@ -211,6 +219,7 @@ impl fmt::Display for ParseErrorType {
|
||||
Self::FnDuplicatedParam(s, arg) => write!(f, "Duplicated parameter {} for function {}", arg, s),
|
||||
|
||||
Self::DuplicatedProperty(s) => write!(f, "Duplicated property for object map literal: {}", s),
|
||||
#[allow(deprecated)]
|
||||
Self::DuplicatedSwitchCase => f.write_str("Duplicated switch case"),
|
||||
Self::DuplicatedVariable(s) => write!(f, "Duplicated variable name: {}", s),
|
||||
|
||||
|
@ -32,7 +32,6 @@ fn test_switch() -> Result<(), Box<EvalAltResult>> {
|
||||
)?,
|
||||
'a'
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
engine.eval_with_scope::<bool>(&mut scope, "switch x { 1 => (), 2 => 'a', 42 => true }")?,
|
||||
true
|
||||
@ -98,6 +97,16 @@ fn test_switch() -> Result<(), Box<EvalAltResult>> {
|
||||
3
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
engine.eval_with_scope::<INT>(&mut scope, "switch 42 { 42 => 123, 42 => 999 }")?,
|
||||
123
|
||||
);
|
||||
|
||||
assert_eq!(
|
||||
engine.eval_with_scope::<INT>(&mut scope, "switch x { 42 => 123, 42 => 999 }")?,
|
||||
123
|
||||
);
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
@ -105,13 +114,6 @@ fn test_switch() -> Result<(), Box<EvalAltResult>> {
|
||||
fn test_switch_errors() -> Result<(), Box<EvalAltResult>> {
|
||||
let engine = Engine::new();
|
||||
|
||||
assert!(matches!(
|
||||
*engine
|
||||
.compile("switch x { 1 => 123, 1 => 42 }")
|
||||
.expect_err("should error")
|
||||
.0,
|
||||
ParseErrorType::DuplicatedSwitchCase
|
||||
));
|
||||
assert!(matches!(
|
||||
*engine
|
||||
.compile("switch x { _ => 123, 1 => 42 }")
|
||||
@ -159,23 +161,22 @@ fn test_switch_condition() -> Result<(), Box<EvalAltResult>> {
|
||||
9
|
||||
);
|
||||
|
||||
assert!(matches!(
|
||||
*engine
|
||||
.compile(
|
||||
assert_eq!(
|
||||
engine.eval_with_scope::<INT>(
|
||||
&mut scope,
|
||||
"
|
||||
switch x {
|
||||
21 if x < 40 => 1,
|
||||
21 if x == 10 => 10,
|
||||
42 if x < 40 => 1,
|
||||
42 if x > 40 => 7,
|
||||
0 if x < 100 => 2,
|
||||
1 => 3,
|
||||
42 if x == 10 => 10,
|
||||
_ => 9
|
||||
}
|
||||
"
|
||||
)
|
||||
.expect_err("should error")
|
||||
.0,
|
||||
ParseErrorType::DuplicatedSwitchCase
|
||||
));
|
||||
)?,
|
||||
7
|
||||
);
|
||||
|
||||
assert!(matches!(
|
||||
*engine
|
||||
|
Loading…
Reference in New Issue
Block a user