88 lines
2.5 KiB
Rust
88 lines
2.5 KiB
Rust
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//! Settings for [`Engine`]'s language options.
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use crate::Engine;
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#[cfg(feature = "no_std")]
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use std::prelude::v1::*;
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/// A type containing all language options for the [`Engine`].
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#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
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pub struct LanguageOptions {
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/// Is `if`-expression allowed?
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pub allow_if_expr: bool,
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/// Is `switch` expression allowed?
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pub allow_switch_expr: bool,
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/// Is statement-expression allowed?
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pub allow_stmt_expr: bool,
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/// Is anonymous function allowed?
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#[cfg(not(feature = "no_function"))]
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pub allow_anonymous_fn: bool,
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}
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impl LanguageOptions {
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/// Create a new [`Options`] with default values.
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#[inline(always)]
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pub const fn new() -> Self {
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Self {
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allow_if_expr: true,
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allow_switch_expr: true,
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allow_stmt_expr: true,
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allow_anonymous_fn: true,
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}
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}
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}
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impl Default for LanguageOptions {
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fn default() -> Self {
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Self::new()
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}
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}
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impl Engine {
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/// Is `if`-expression allowed?
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#[inline(always)]
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pub fn allow_if_expression(&self) -> bool {
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self.options.allow_if_expr
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}
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/// Set whether `if`-expression is allowed.
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#[inline(always)]
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pub fn set_allow_if_expression(&mut self, enable: bool) {
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self.options.allow_if_expr = enable;
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}
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/// Is `switch` expression allowed?
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#[inline(always)]
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pub fn allow_switch_expression(&self) -> bool {
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self.options.allow_switch_expr
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}
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/// Set whether `switch` expression is allowed.
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#[inline(always)]
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pub fn set_allow_switch_expression(&mut self, enable: bool) {
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self.options.allow_switch_expr = enable;
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}
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/// Is statement-expression allowed?
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#[inline(always)]
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pub fn allow_statement_expression(&self) -> bool {
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self.options.allow_stmt_expr
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}
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/// Set whether statement-expression is allowed.
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#[inline(always)]
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pub fn set_allow_statement_expression(&mut self, enable: bool) {
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self.options.allow_stmt_expr = enable;
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}
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/// Is anonymous function allowed?
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///
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/// Not available under `no_function`.
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#[cfg(not(feature = "no_function"))]
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#[inline(always)]
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pub fn allow_anonymous_fn(&self) -> bool {
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self.options.allow_anonymous_fn
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}
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/// Set whether anonymous function is allowed.
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///
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/// Not available under `no_function`.
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#[cfg(not(feature = "no_function"))]
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#[inline(always)]
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pub fn set_allow_anonymous_fn(&mut self, enable: bool) {
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self.options.allow_anonymous_fn = enable;
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}
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}
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