2022-01-07 04:43:47 +01:00
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//! Types to support chaining operations (i.e. indexing and dotting).
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#![cfg(any(not(feature = "no_index"), not(feature = "no_object")))]
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2022-01-16 15:54:28 +01:00
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use super::{EvalState, GlobalRuntimeState, Target};
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2022-01-07 05:19:01 +01:00
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use crate::ast::{Expr, OpAssignment};
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use crate::types::dynamic::Union;
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use crate::{Dynamic, Engine, Module, Position, RhaiResult, RhaiResultOf, Scope, StaticVec, ERR};
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2022-01-07 04:43:47 +01:00
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use std::hash::Hash;
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#[cfg(feature = "no_std")]
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use std::prelude::v1::*;
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/// Method of chaining.
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#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
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pub enum ChainType {
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/// Indexing.
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#[cfg(not(feature = "no_index"))]
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Indexing,
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/// Dotting.
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#[cfg(not(feature = "no_object"))]
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Dotting,
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}
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impl From<&Expr> for ChainType {
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#[inline]
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fn from(expr: &Expr) -> Self {
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match expr {
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#[cfg(not(feature = "no_index"))]
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2022-02-08 02:02:15 +01:00
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Expr::Index(..) => Self::Indexing,
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2022-01-07 04:43:47 +01:00
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#[cfg(not(feature = "no_object"))]
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2022-02-08 02:02:15 +01:00
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Expr::Dot(..) => Self::Dotting,
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2022-01-07 04:43:47 +01:00
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expr => unreachable!("Expr::Index or Expr::Dot expected but gets {:?}", expr),
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}
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}
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}
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/// Value of a chaining argument.
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#[derive(Debug, Clone, Hash)]
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pub enum ChainArgument {
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/// Dot-property access.
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#[cfg(not(feature = "no_object"))]
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Property(Position),
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/// Arguments to a dot method call.
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/// Wrapped values are the arguments plus the [position][Position] of the first argument.
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///
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/// Since many dotted function calls have no arguments (e.g. `string.len()`), it is better to
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/// reduce the size of [`ChainArgument`] by using a boxed slice.
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#[cfg(not(feature = "no_object"))]
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MethodCallArgs(Option<Box<[Dynamic]>>, Position),
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/// Index value and [position][Position].
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#[cfg(not(feature = "no_index"))]
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IndexValue(Dynamic, Position),
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}
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impl ChainArgument {
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/// Return the index value.
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#[inline(always)]
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#[cfg(not(feature = "no_index"))]
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#[must_use]
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pub fn into_index_value(self) -> Option<Dynamic> {
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match self {
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2022-02-08 02:02:15 +01:00
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Self::IndexValue(value, ..) => Some(value),
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2022-01-07 04:43:47 +01:00
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#[cfg(not(feature = "no_object"))]
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_ => None,
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}
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}
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/// Return the list of method call arguments.
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///
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/// # Panics
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///
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/// Panics if the [`ChainArgument`] is not [`MethodCallArgs`][ChainArgument::MethodCallArgs].
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#[inline(always)]
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#[cfg(not(feature = "no_object"))]
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#[must_use]
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pub fn into_fn_call_args(self) -> (crate::FnArgsVec<Dynamic>, Position) {
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match self {
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Self::MethodCallArgs(None, pos) => (crate::FnArgsVec::new_const(), pos),
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Self::MethodCallArgs(Some(mut values), pos) => {
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(values.iter_mut().map(std::mem::take).collect(), pos)
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}
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x => unreachable!("ChainArgument::MethodCallArgs expected but gets {:?}", x),
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}
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}
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/// Return the [position][Position].
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#[inline(always)]
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#[must_use]
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#[allow(dead_code)]
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pub const fn position(&self) -> Position {
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match self {
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#[cfg(not(feature = "no_object"))]
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ChainArgument::Property(pos) => *pos,
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#[cfg(not(feature = "no_object"))]
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2022-02-08 02:02:15 +01:00
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ChainArgument::MethodCallArgs(.., pos) => *pos,
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2022-01-07 04:43:47 +01:00
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#[cfg(not(feature = "no_index"))]
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2022-02-08 02:02:15 +01:00
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ChainArgument::IndexValue(.., pos) => *pos,
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2022-01-07 04:43:47 +01:00
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}
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}
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/// Create n [`MethodCallArgs`][ChainArgument::MethodCallArgs].
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#[inline(always)]
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#[cfg(not(feature = "no_object"))]
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#[must_use]
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pub fn from_fn_call_args(values: crate::FnArgsVec<Dynamic>, pos: Position) -> Self {
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if values.is_empty() {
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Self::MethodCallArgs(None, pos)
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} else {
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Self::MethodCallArgs(Some(values.into_vec().into()), pos)
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}
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}
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/// Create an [`IndexValue`][ChainArgument::IndexValue].
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#[inline(always)]
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#[cfg(not(feature = "no_index"))]
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#[must_use]
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pub const fn from_index_value(value: Dynamic, pos: Position) -> Self {
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Self::IndexValue(value, pos)
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}
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}
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2022-01-07 05:19:01 +01:00
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impl Engine {
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/// Chain-evaluate a dot/index chain.
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/// [`Position`] in [`EvalAltResult`] is [`NONE`][Position::NONE] and must be set afterwards.
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fn eval_dot_index_chain_helper(
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&self,
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global: &mut GlobalRuntimeState,
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state: &mut EvalState,
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lib: &[&Module],
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this_ptr: &mut Option<&mut Dynamic>,
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target: &mut Target,
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root: (&str, Position),
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2022-01-25 05:24:30 +01:00
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parent: &Expr,
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2022-01-07 05:19:01 +01:00
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rhs: &Expr,
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terminate_chaining: bool,
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idx_values: &mut StaticVec<super::ChainArgument>,
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chain_type: ChainType,
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level: usize,
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new_val: Option<((Dynamic, Position), (Option<OpAssignment>, Position))>,
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) -> RhaiResultOf<(Dynamic, bool)> {
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2022-01-25 07:32:14 +01:00
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let _parent = parent;
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2022-01-07 05:19:01 +01:00
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let is_ref_mut = target.is_ref();
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let _terminate_chaining = terminate_chaining;
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// Pop the last index value
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let idx_val = idx_values.pop().unwrap();
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2022-01-25 05:24:30 +01:00
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#[cfg(feature = "debugging")]
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let scope = &mut Scope::new();
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2022-01-07 05:19:01 +01:00
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match chain_type {
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#[cfg(not(feature = "no_index"))]
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ChainType::Indexing => {
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2022-02-04 05:04:33 +01:00
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let pos = rhs.start_position();
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2022-01-07 05:19:01 +01:00
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let root_pos = idx_val.position();
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let idx_val = idx_val.into_index_value().expect("`ChainType::Index`");
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match rhs {
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// xxx[idx].expr... | xxx[idx][expr]...
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Expr::Dot(x, term, x_pos) | Expr::Index(x, term, x_pos)
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if !_terminate_chaining =>
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{
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2022-01-25 05:24:30 +01:00
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#[cfg(feature = "debugging")]
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2022-02-03 04:56:08 +01:00
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self.run_debugger(scope, global, state, lib, this_ptr, _parent, level)?;
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2022-01-25 05:24:30 +01:00
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2022-01-07 05:19:01 +01:00
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let mut idx_val_for_setter = idx_val.clone();
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2022-02-04 05:04:33 +01:00
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let idx_pos = x.lhs.start_position();
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2022-01-07 05:19:01 +01:00
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let rhs_chain = rhs.into();
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let (try_setter, result) = {
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let mut obj = self.get_indexed_mut(
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global, state, lib, target, idx_val, idx_pos, false, true, level,
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)?;
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let is_obj_temp_val = obj.is_temp_value();
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let obj_ptr = &mut obj;
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match self.eval_dot_index_chain_helper(
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2022-01-25 05:24:30 +01:00
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global, state, lib, this_ptr, obj_ptr, root, rhs, &x.rhs, *term,
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2022-01-07 05:19:01 +01:00
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idx_values, rhs_chain, level, new_val,
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) {
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Ok((result, true)) if is_obj_temp_val => {
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(Some(obj.take_or_clone()), (result, true))
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}
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Ok(result) => (None, result),
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Err(err) => return Err(err.fill_position(*x_pos)),
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}
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};
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if let Some(mut new_val) = try_setter {
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// Try to call index setter if value is changed
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let hash_set =
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crate::ast::FnCallHashes::from_native(global.hash_idx_set());
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let args = &mut [target, &mut idx_val_for_setter, &mut new_val];
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let fn_name = crate::engine::FN_IDX_SET;
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if let Err(err) = self.exec_fn_call(
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2022-02-02 15:42:33 +01:00
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None, global, state, lib, fn_name, hash_set, args, is_ref_mut,
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true, root_pos, level,
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2022-01-07 05:19:01 +01:00
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) {
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// Just ignore if there is no index setter
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2022-02-08 02:02:15 +01:00
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if !matches!(*err, ERR::ErrorFunctionNotFound(..)) {
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2022-01-07 05:19:01 +01:00
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return Err(err);
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}
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}
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}
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Ok(result)
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}
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// xxx[rhs] op= new_val
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_ if new_val.is_some() => {
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2022-01-25 05:24:30 +01:00
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#[cfg(feature = "debugging")]
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2022-02-03 04:56:08 +01:00
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self.run_debugger(scope, global, state, lib, this_ptr, _parent, level)?;
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2022-01-25 05:24:30 +01:00
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2022-01-07 05:19:01 +01:00
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let ((new_val, new_pos), (op_info, op_pos)) = new_val.expect("`Some`");
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let mut idx_val_for_setter = idx_val.clone();
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let try_setter = match self.get_indexed_mut(
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global, state, lib, target, idx_val, pos, true, false, level,
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) {
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// Indexed value is a reference - update directly
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Ok(ref mut obj_ptr) => {
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self.eval_op_assignment(
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global, state, lib, op_info, op_pos, obj_ptr, root, new_val,
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2022-02-02 07:47:35 +01:00
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level,
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2022-01-07 05:19:01 +01:00
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)
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.map_err(|err| err.fill_position(new_pos))?;
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#[cfg(not(feature = "unchecked"))]
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self.check_data_size(obj_ptr, new_pos)?;
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None
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}
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// Can't index - try to call an index setter
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#[cfg(not(feature = "no_index"))]
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2022-02-08 02:02:15 +01:00
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Err(err) if matches!(*err, ERR::ErrorIndexingType(..)) => Some(new_val),
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2022-01-07 05:19:01 +01:00
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// Any other error
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Err(err) => return Err(err),
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};
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if let Some(mut new_val) = try_setter {
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// Try to call index setter
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let hash_set =
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crate::ast::FnCallHashes::from_native(global.hash_idx_set());
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let args = &mut [target, &mut idx_val_for_setter, &mut new_val];
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let fn_name = crate::engine::FN_IDX_SET;
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self.exec_fn_call(
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2022-02-02 15:42:33 +01:00
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None, global, state, lib, fn_name, hash_set, args, is_ref_mut,
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true, root_pos, level,
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2022-01-07 05:19:01 +01:00
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)?;
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}
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Ok((Dynamic::UNIT, true))
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}
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// xxx[rhs]
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2022-01-25 05:24:30 +01:00
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_ => {
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#[cfg(feature = "debugging")]
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2022-02-03 04:56:08 +01:00
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self.run_debugger(scope, global, state, lib, this_ptr, _parent, level)?;
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2022-01-25 05:24:30 +01:00
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self.get_indexed_mut(
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2022-01-07 05:19:01 +01:00
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global, state, lib, target, idx_val, pos, false, true, level,
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)
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2022-01-25 05:24:30 +01:00
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.map(|v| (v.take_or_clone(), false))
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}
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2022-01-07 05:19:01 +01:00
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}
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}
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#[cfg(not(feature = "no_object"))]
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ChainType::Dotting => {
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match rhs {
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// xxx.fn_name(arg_expr_list)
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Expr::FnCall(x, pos) if !x.is_qualified() && new_val.is_none() => {
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let crate::ast::FnCallExpr { name, hashes, .. } = x.as_ref();
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let call_args = &mut idx_val.into_fn_call_args();
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2022-01-25 05:24:30 +01:00
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#[cfg(feature = "debugging")]
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2022-02-03 04:56:08 +01:00
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let reset_debugger = self.run_debugger_with_reset(
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scope, global, state, lib, this_ptr, rhs, level,
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)?;
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2022-01-25 05:24:30 +01:00
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let result = self.make_method_call(
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2022-01-07 05:19:01 +01:00
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global, state, lib, name, *hashes, target, call_args, *pos, level,
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2022-01-25 05:24:30 +01:00
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);
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#[cfg(feature = "debugging")]
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global.debugger.reset_status(reset_debugger);
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result
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2022-01-07 05:19:01 +01:00
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}
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// xxx.fn_name(...) = ???
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2022-02-08 02:02:15 +01:00
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Expr::FnCall(..) if new_val.is_some() => {
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2022-01-07 05:19:01 +01:00
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unreachable!("method call cannot be assigned to")
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}
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// xxx.module::fn_name(...) - syntax error
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2022-02-08 02:02:15 +01:00
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Expr::FnCall(..) => {
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2022-01-07 05:19:01 +01:00
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unreachable!("function call in dot chain should not be namespace-qualified")
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}
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// {xxx:map}.id op= ???
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2022-01-28 03:11:40 +01:00
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Expr::Property(x, pos) if target.is::<crate::Map>() && new_val.is_some() => {
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2022-01-25 05:24:30 +01:00
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#[cfg(feature = "debugging")]
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2022-02-03 04:56:08 +01:00
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self.run_debugger(scope, global, state, lib, this_ptr, rhs, level)?;
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2022-01-25 05:24:30 +01:00
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2022-01-28 03:11:40 +01:00
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let index = x.2.clone().into();
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2022-01-07 05:19:01 +01:00
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let ((new_val, new_pos), (op_info, op_pos)) = new_val.expect("`Some`");
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{
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let val_target = &mut self.get_indexed_mut(
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global, state, lib, target, index, *pos, true, false, level,
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)?;
|
|
|
|
self.eval_op_assignment(
|
|
|
|
global, state, lib, op_info, op_pos, val_target, root, new_val,
|
2022-02-02 07:47:35 +01:00
|
|
|
level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
.map_err(|err| err.fill_position(new_pos))?;
|
|
|
|
}
|
|
|
|
#[cfg(not(feature = "unchecked"))]
|
|
|
|
self.check_data_size(target.source(), new_pos)?;
|
|
|
|
Ok((Dynamic::UNIT, true))
|
|
|
|
}
|
|
|
|
// {xxx:map}.id
|
2022-01-28 03:11:40 +01:00
|
|
|
Expr::Property(x, pos) if target.is::<crate::Map>() => {
|
2022-01-25 05:24:30 +01:00
|
|
|
#[cfg(feature = "debugging")]
|
2022-02-03 04:56:08 +01:00
|
|
|
self.run_debugger(scope, global, state, lib, this_ptr, rhs, level)?;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
2022-01-28 03:11:40 +01:00
|
|
|
let index = x.2.clone().into();
|
2022-01-07 05:19:01 +01:00
|
|
|
let val = self.get_indexed_mut(
|
|
|
|
global, state, lib, target, index, *pos, false, false, level,
|
|
|
|
)?;
|
|
|
|
Ok((val.take_or_clone(), false))
|
|
|
|
}
|
|
|
|
// xxx.id op= ???
|
2022-01-28 03:11:40 +01:00
|
|
|
Expr::Property(x, pos) if new_val.is_some() => {
|
2022-01-25 05:24:30 +01:00
|
|
|
#[cfg(feature = "debugging")]
|
2022-02-03 04:56:08 +01:00
|
|
|
self.run_debugger(scope, global, state, lib, this_ptr, rhs, level)?;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
2022-01-28 03:11:40 +01:00
|
|
|
let ((getter, hash_get), (setter, hash_set), name) = x.as_ref();
|
2022-01-07 05:19:01 +01:00
|
|
|
let ((mut new_val, new_pos), (op_info, op_pos)) = new_val.expect("`Some`");
|
|
|
|
|
|
|
|
if op_info.is_some() {
|
|
|
|
let hash = crate::ast::FnCallHashes::from_native(*hash_get);
|
|
|
|
let args = &mut [target.as_mut()];
|
2022-02-08 02:02:15 +01:00
|
|
|
let (mut orig_val, ..) = self
|
2022-01-07 05:19:01 +01:00
|
|
|
.exec_fn_call(
|
2022-02-02 15:42:33 +01:00
|
|
|
None, global, state, lib, getter, hash, args, is_ref_mut, true,
|
|
|
|
*pos, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
.or_else(|err| match *err {
|
|
|
|
// Try an indexer if property does not exist
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorDotExpr(..) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
let prop = name.into();
|
|
|
|
self.get_indexed_mut(
|
|
|
|
global, state, lib, target, prop, *pos, false, true,
|
|
|
|
level,
|
|
|
|
)
|
|
|
|
.map(|v| (v.take_or_clone(), false))
|
|
|
|
.map_err(
|
|
|
|
|idx_err| match *idx_err {
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorIndexingType(..) => err,
|
2022-01-07 05:19:01 +01:00
|
|
|
_ => idx_err,
|
|
|
|
},
|
|
|
|
)
|
|
|
|
}
|
|
|
|
_ => Err(err),
|
|
|
|
})?;
|
|
|
|
|
|
|
|
self.eval_op_assignment(
|
|
|
|
global,
|
|
|
|
state,
|
|
|
|
lib,
|
|
|
|
op_info,
|
|
|
|
op_pos,
|
|
|
|
&mut (&mut orig_val).into(),
|
|
|
|
root,
|
|
|
|
new_val,
|
2022-02-02 07:47:35 +01:00
|
|
|
level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
.map_err(|err| err.fill_position(new_pos))?;
|
|
|
|
|
|
|
|
new_val = orig_val;
|
|
|
|
}
|
|
|
|
|
|
|
|
let hash = crate::ast::FnCallHashes::from_native(*hash_set);
|
|
|
|
let args = &mut [target.as_mut(), &mut new_val];
|
|
|
|
self.exec_fn_call(
|
2022-02-02 15:42:33 +01:00
|
|
|
None, global, state, lib, setter, hash, args, is_ref_mut, true, *pos,
|
2022-01-07 05:19:01 +01:00
|
|
|
level,
|
|
|
|
)
|
|
|
|
.or_else(|err| match *err {
|
|
|
|
// Try an indexer if property does not exist
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorDotExpr(..) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
let args = &mut [target, &mut name.into(), &mut new_val];
|
|
|
|
let fn_name = crate::engine::FN_IDX_SET;
|
|
|
|
let hash_set =
|
|
|
|
crate::ast::FnCallHashes::from_native(global.hash_idx_set());
|
|
|
|
let pos = Position::NONE;
|
|
|
|
|
|
|
|
self.exec_fn_call(
|
2022-02-02 15:42:33 +01:00
|
|
|
None, global, state, lib, fn_name, hash_set, args, is_ref_mut,
|
|
|
|
true, pos, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
.map_err(
|
|
|
|
|idx_err| match *idx_err {
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorIndexingType(..) => err,
|
2022-01-07 05:19:01 +01:00
|
|
|
_ => idx_err,
|
|
|
|
},
|
|
|
|
)
|
|
|
|
}
|
|
|
|
_ => Err(err),
|
|
|
|
})
|
|
|
|
}
|
|
|
|
// xxx.id
|
2022-01-28 03:11:40 +01:00
|
|
|
Expr::Property(x, pos) => {
|
2022-01-25 05:24:30 +01:00
|
|
|
#[cfg(feature = "debugging")]
|
2022-02-03 04:56:08 +01:00
|
|
|
self.run_debugger(scope, global, state, lib, this_ptr, rhs, level)?;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
2022-01-28 03:11:40 +01:00
|
|
|
let ((getter, hash_get), _, name) = x.as_ref();
|
2022-01-07 05:19:01 +01:00
|
|
|
let hash = crate::ast::FnCallHashes::from_native(*hash_get);
|
|
|
|
let args = &mut [target.as_mut()];
|
|
|
|
self.exec_fn_call(
|
2022-02-02 15:42:33 +01:00
|
|
|
None, global, state, lib, getter, hash, args, is_ref_mut, true, *pos,
|
2022-01-07 05:19:01 +01:00
|
|
|
level,
|
|
|
|
)
|
|
|
|
.map_or_else(
|
|
|
|
|err| match *err {
|
|
|
|
// Try an indexer if property does not exist
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorDotExpr(..) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
let prop = name.into();
|
|
|
|
self.get_indexed_mut(
|
|
|
|
global, state, lib, target, prop, *pos, false, true, level,
|
|
|
|
)
|
|
|
|
.map(|v| (v.take_or_clone(), false))
|
|
|
|
.map_err(|idx_err| {
|
|
|
|
match *idx_err {
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorIndexingType(..) => err,
|
2022-01-07 05:19:01 +01:00
|
|
|
_ => idx_err,
|
|
|
|
}
|
|
|
|
})
|
|
|
|
}
|
|
|
|
_ => Err(err),
|
|
|
|
},
|
|
|
|
// Assume getters are always pure
|
2022-02-08 02:02:15 +01:00
|
|
|
|(v, ..)| Ok((v, false)),
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
}
|
|
|
|
// {xxx:map}.sub_lhs[expr] | {xxx:map}.sub_lhs.expr
|
|
|
|
Expr::Index(x, term, x_pos) | Expr::Dot(x, term, x_pos)
|
|
|
|
if target.is::<crate::Map>() =>
|
|
|
|
{
|
2022-01-25 07:32:14 +01:00
|
|
|
let _node = &x.lhs;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
2022-01-07 05:19:01 +01:00
|
|
|
let val_target = &mut match x.lhs {
|
2022-01-28 03:11:40 +01:00
|
|
|
Expr::Property(ref p, pos) => {
|
2022-01-25 05:24:30 +01:00
|
|
|
#[cfg(feature = "debugging")]
|
2022-02-03 04:56:08 +01:00
|
|
|
self.run_debugger(
|
|
|
|
scope, global, state, lib, this_ptr, _node, level,
|
|
|
|
)?;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
2022-01-28 03:11:40 +01:00
|
|
|
let index = p.2.clone().into();
|
2022-01-07 05:19:01 +01:00
|
|
|
self.get_indexed_mut(
|
2022-01-28 03:11:40 +01:00
|
|
|
global, state, lib, target, index, pos, false, true, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)?
|
|
|
|
}
|
|
|
|
// {xxx:map}.fn_name(arg_expr_list)[expr] | {xxx:map}.fn_name(arg_expr_list).expr
|
|
|
|
Expr::FnCall(ref x, pos) if !x.is_qualified() => {
|
|
|
|
let crate::ast::FnCallExpr { name, hashes, .. } = x.as_ref();
|
|
|
|
let call_args = &mut idx_val.into_fn_call_args();
|
2022-01-25 05:24:30 +01:00
|
|
|
|
|
|
|
#[cfg(feature = "debugging")]
|
2022-02-03 04:56:08 +01:00
|
|
|
let reset_debugger = self.run_debugger_with_reset(
|
|
|
|
scope, global, state, lib, this_ptr, _node, level,
|
|
|
|
)?;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
|
|
|
let result = self.make_method_call(
|
2022-01-07 05:19:01 +01:00
|
|
|
global, state, lib, name, *hashes, target, call_args, pos,
|
|
|
|
level,
|
2022-01-25 05:24:30 +01:00
|
|
|
);
|
|
|
|
|
|
|
|
#[cfg(feature = "debugging")]
|
|
|
|
global.debugger.reset_status(reset_debugger);
|
|
|
|
|
|
|
|
result?.0.into()
|
2022-01-07 05:19:01 +01:00
|
|
|
}
|
|
|
|
// {xxx:map}.module::fn_name(...) - syntax error
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::FnCall(..) => unreachable!(
|
2022-01-07 05:19:01 +01:00
|
|
|
"function call in dot chain should not be namespace-qualified"
|
|
|
|
),
|
|
|
|
// Others - syntax error
|
|
|
|
ref expr => unreachable!("invalid dot expression: {:?}", expr),
|
|
|
|
};
|
|
|
|
let rhs_chain = rhs.into();
|
|
|
|
|
|
|
|
self.eval_dot_index_chain_helper(
|
2022-01-25 05:24:30 +01:00
|
|
|
global, state, lib, this_ptr, val_target, root, rhs, &x.rhs, *term,
|
2022-01-07 05:19:01 +01:00
|
|
|
idx_values, rhs_chain, level, new_val,
|
|
|
|
)
|
|
|
|
.map_err(|err| err.fill_position(*x_pos))
|
|
|
|
}
|
|
|
|
// xxx.sub_lhs[expr] | xxx.sub_lhs.expr
|
|
|
|
Expr::Index(x, term, x_pos) | Expr::Dot(x, term, x_pos) => {
|
2022-01-25 07:32:14 +01:00
|
|
|
let _node = &x.lhs;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
2022-01-07 05:19:01 +01:00
|
|
|
match x.lhs {
|
|
|
|
// xxx.prop[expr] | xxx.prop.expr
|
2022-01-28 03:11:40 +01:00
|
|
|
Expr::Property(ref p, pos) => {
|
2022-01-25 05:24:30 +01:00
|
|
|
#[cfg(feature = "debugging")]
|
2022-02-03 04:56:08 +01:00
|
|
|
self.run_debugger(
|
|
|
|
scope, global, state, lib, this_ptr, _node, level,
|
|
|
|
)?;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
2022-01-28 03:11:40 +01:00
|
|
|
let ((getter, hash_get), (setter, hash_set), name) = p.as_ref();
|
2022-01-07 05:19:01 +01:00
|
|
|
let rhs_chain = rhs.into();
|
|
|
|
let hash_get = crate::ast::FnCallHashes::from_native(*hash_get);
|
|
|
|
let hash_set = crate::ast::FnCallHashes::from_native(*hash_set);
|
|
|
|
let mut arg_values = [target.as_mut(), &mut Dynamic::UNIT.clone()];
|
|
|
|
let args = &mut arg_values[..1];
|
|
|
|
|
|
|
|
// Assume getters are always pure
|
2022-02-08 02:02:15 +01:00
|
|
|
let (mut val, ..) = self
|
2022-01-07 05:19:01 +01:00
|
|
|
.exec_fn_call(
|
2022-02-02 15:42:33 +01:00
|
|
|
None, global, state, lib, getter, hash_get, args,
|
|
|
|
is_ref_mut, true, pos, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
.or_else(|err| match *err {
|
|
|
|
// Try an indexer if property does not exist
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorDotExpr(..) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
let prop = name.into();
|
|
|
|
self.get_indexed_mut(
|
2022-01-28 03:11:40 +01:00
|
|
|
global, state, lib, target, prop, pos, false, true,
|
|
|
|
level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
.map(|v| (v.take_or_clone(), false))
|
|
|
|
.map_err(
|
|
|
|
|idx_err| match *idx_err {
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorIndexingType(..) => err,
|
2022-01-07 05:19:01 +01:00
|
|
|
_ => idx_err,
|
|
|
|
},
|
|
|
|
)
|
|
|
|
}
|
|
|
|
_ => Err(err),
|
|
|
|
})?;
|
|
|
|
|
|
|
|
let val = &mut val;
|
|
|
|
|
|
|
|
let (result, may_be_changed) = self
|
|
|
|
.eval_dot_index_chain_helper(
|
|
|
|
global,
|
|
|
|
state,
|
|
|
|
lib,
|
|
|
|
this_ptr,
|
|
|
|
&mut val.into(),
|
|
|
|
root,
|
2022-01-25 05:24:30 +01:00
|
|
|
rhs,
|
2022-01-07 05:19:01 +01:00
|
|
|
&x.rhs,
|
|
|
|
*term,
|
|
|
|
idx_values,
|
|
|
|
rhs_chain,
|
|
|
|
level,
|
|
|
|
new_val,
|
|
|
|
)
|
|
|
|
.map_err(|err| err.fill_position(*x_pos))?;
|
|
|
|
|
|
|
|
// Feed the value back via a setter just in case it has been updated
|
|
|
|
if may_be_changed {
|
|
|
|
// Re-use args because the first &mut parameter will not be consumed
|
|
|
|
let mut arg_values = [target.as_mut(), val];
|
|
|
|
let args = &mut arg_values;
|
|
|
|
self.exec_fn_call(
|
2022-02-02 15:42:33 +01:00
|
|
|
None, global, state, lib, setter, hash_set, args,
|
|
|
|
is_ref_mut, true, pos, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
.or_else(
|
|
|
|
|err| match *err {
|
|
|
|
// Try an indexer if property does not exist
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorDotExpr(..) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
let args =
|
|
|
|
&mut [target.as_mut(), &mut name.into(), val];
|
|
|
|
let fn_name = crate::engine::FN_IDX_SET;
|
|
|
|
let hash_set =
|
|
|
|
crate::ast::FnCallHashes::from_native(
|
|
|
|
global.hash_idx_set(),
|
|
|
|
);
|
|
|
|
self.exec_fn_call(
|
2022-02-02 15:42:33 +01:00
|
|
|
None, global, state, lib, fn_name, hash_set,
|
|
|
|
args, is_ref_mut, true, pos, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
.or_else(|idx_err| match *idx_err {
|
2022-02-08 02:02:15 +01:00
|
|
|
ERR::ErrorIndexingType(..) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
// If there is no setter, no need to feed it back because
|
|
|
|
// the property is read-only
|
|
|
|
Ok((Dynamic::UNIT, false))
|
|
|
|
}
|
|
|
|
_ => Err(idx_err),
|
|
|
|
})
|
|
|
|
}
|
|
|
|
_ => Err(err),
|
|
|
|
},
|
|
|
|
)?;
|
|
|
|
}
|
|
|
|
|
|
|
|
Ok((result, may_be_changed))
|
|
|
|
}
|
|
|
|
// xxx.fn_name(arg_expr_list)[expr] | xxx.fn_name(arg_expr_list).expr
|
|
|
|
Expr::FnCall(ref f, pos) if !f.is_qualified() => {
|
|
|
|
let crate::ast::FnCallExpr { name, hashes, .. } = f.as_ref();
|
|
|
|
let rhs_chain = rhs.into();
|
|
|
|
let args = &mut idx_val.into_fn_call_args();
|
2022-01-25 05:24:30 +01:00
|
|
|
|
|
|
|
#[cfg(feature = "debugging")]
|
2022-02-03 04:56:08 +01:00
|
|
|
let reset_debugger = self.run_debugger_with_reset(
|
|
|
|
scope, global, state, lib, this_ptr, _node, level,
|
|
|
|
)?;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
|
|
|
let result = self.make_method_call(
|
2022-01-07 05:19:01 +01:00
|
|
|
global, state, lib, name, *hashes, target, args, pos, level,
|
2022-01-25 05:24:30 +01:00
|
|
|
);
|
|
|
|
|
|
|
|
#[cfg(feature = "debugging")]
|
|
|
|
global.debugger.reset_status(reset_debugger);
|
|
|
|
|
|
|
|
let val = &mut result?.0;
|
2022-01-07 05:19:01 +01:00
|
|
|
let target = &mut val.into();
|
|
|
|
|
|
|
|
self.eval_dot_index_chain_helper(
|
2022-01-25 05:24:30 +01:00
|
|
|
global, state, lib, this_ptr, target, root, rhs, &x.rhs, *term,
|
2022-01-07 05:19:01 +01:00
|
|
|
idx_values, rhs_chain, level, new_val,
|
|
|
|
)
|
|
|
|
.map_err(|err| err.fill_position(pos))
|
|
|
|
}
|
|
|
|
// xxx.module::fn_name(...) - syntax error
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::FnCall(..) => unreachable!(
|
2022-01-07 05:19:01 +01:00
|
|
|
"function call in dot chain should not be namespace-qualified"
|
|
|
|
),
|
|
|
|
// Others - syntax error
|
|
|
|
ref expr => unreachable!("invalid dot expression: {:?}", expr),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// Syntax error
|
2022-02-04 05:04:33 +01:00
|
|
|
_ => Err(ERR::ErrorDotExpr("".into(), rhs.start_position()).into()),
|
2022-01-07 05:19:01 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Evaluate a dot/index chain.
|
|
|
|
pub(crate) fn eval_dot_index_chain(
|
|
|
|
&self,
|
|
|
|
scope: &mut Scope,
|
|
|
|
global: &mut GlobalRuntimeState,
|
|
|
|
state: &mut EvalState,
|
|
|
|
lib: &[&Module],
|
|
|
|
this_ptr: &mut Option<&mut Dynamic>,
|
|
|
|
expr: &Expr,
|
|
|
|
level: usize,
|
|
|
|
new_val: Option<((Dynamic, Position), (Option<OpAssignment>, Position))>,
|
|
|
|
) -> RhaiResult {
|
|
|
|
let (crate::ast::BinaryExpr { lhs, rhs }, chain_type, term, op_pos) = match expr {
|
|
|
|
#[cfg(not(feature = "no_index"))]
|
|
|
|
Expr::Index(x, term, pos) => (x.as_ref(), ChainType::Indexing, *term, *pos),
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
|
|
|
Expr::Dot(x, term, pos) => (x.as_ref(), ChainType::Dotting, *term, *pos),
|
|
|
|
expr => unreachable!("Expr::Index or Expr::Dot expected but gets {:?}", expr),
|
|
|
|
};
|
|
|
|
|
|
|
|
let idx_values = &mut StaticVec::new_const();
|
|
|
|
|
|
|
|
self.eval_dot_index_chain_arguments(
|
|
|
|
scope, global, state, lib, this_ptr, rhs, term, chain_type, idx_values, 0, level,
|
|
|
|
)?;
|
|
|
|
|
|
|
|
let is_assignment = new_val.is_some();
|
|
|
|
|
|
|
|
match lhs {
|
|
|
|
// id.??? or id[???]
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::Variable(.., var_pos, x) => {
|
2022-01-25 05:24:30 +01:00
|
|
|
#[cfg(feature = "debugging")]
|
2022-02-03 04:56:08 +01:00
|
|
|
self.run_debugger(scope, global, state, lib, this_ptr, lhs, level)?;
|
2022-01-25 05:24:30 +01:00
|
|
|
|
2022-01-07 05:19:01 +01:00
|
|
|
#[cfg(not(feature = "unchecked"))]
|
|
|
|
self.inc_operations(&mut global.num_operations, *var_pos)?;
|
|
|
|
|
2022-02-08 02:02:15 +01:00
|
|
|
let (mut target, ..) =
|
2022-02-04 15:16:12 +01:00
|
|
|
self.search_namespace(scope, global, state, lib, this_ptr, lhs, level)?;
|
2022-01-07 05:19:01 +01:00
|
|
|
|
|
|
|
let obj_ptr = &mut target;
|
|
|
|
let root = (x.2.as_str(), *var_pos);
|
|
|
|
|
|
|
|
self.eval_dot_index_chain_helper(
|
2022-01-25 05:24:30 +01:00
|
|
|
global, state, lib, &mut None, obj_ptr, root, expr, rhs, term, idx_values,
|
2022-01-07 05:19:01 +01:00
|
|
|
chain_type, level, new_val,
|
|
|
|
)
|
2022-02-08 02:02:15 +01:00
|
|
|
.map(|(v, ..)| v)
|
2022-01-07 05:19:01 +01:00
|
|
|
.map_err(|err| err.fill_position(op_pos))
|
|
|
|
}
|
|
|
|
// {expr}.??? = ??? or {expr}[???] = ???
|
|
|
|
_ if is_assignment => unreachable!("cannot assign to an expression"),
|
|
|
|
// {expr}.??? or {expr}[???]
|
|
|
|
expr => {
|
|
|
|
let value = self.eval_expr(scope, global, state, lib, this_ptr, expr, level)?;
|
|
|
|
let obj_ptr = &mut value.into();
|
2022-02-04 05:04:33 +01:00
|
|
|
let root = ("", expr.start_position());
|
2022-01-07 05:19:01 +01:00
|
|
|
self.eval_dot_index_chain_helper(
|
2022-01-25 05:24:30 +01:00
|
|
|
global, state, lib, this_ptr, obj_ptr, root, expr, rhs, term, idx_values,
|
|
|
|
chain_type, level, new_val,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
2022-02-08 02:02:15 +01:00
|
|
|
.map(|(v, ..)| if is_assignment { Dynamic::UNIT } else { v })
|
2022-01-07 05:19:01 +01:00
|
|
|
.map_err(|err| err.fill_position(op_pos))
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Evaluate a chain of indexes and store the results in a [`StaticVec`].
|
|
|
|
/// [`StaticVec`] is used to avoid an allocation in the overwhelming cases of
|
|
|
|
/// just a few levels of indexing.
|
|
|
|
fn eval_dot_index_chain_arguments(
|
|
|
|
&self,
|
|
|
|
scope: &mut Scope,
|
|
|
|
global: &mut GlobalRuntimeState,
|
|
|
|
state: &mut EvalState,
|
|
|
|
lib: &[&Module],
|
|
|
|
this_ptr: &mut Option<&mut Dynamic>,
|
|
|
|
expr: &Expr,
|
|
|
|
terminate_chaining: bool,
|
|
|
|
parent_chain_type: ChainType,
|
|
|
|
idx_values: &mut StaticVec<super::ChainArgument>,
|
|
|
|
size: usize,
|
|
|
|
level: usize,
|
|
|
|
) -> RhaiResultOf<()> {
|
|
|
|
#[cfg(not(feature = "unchecked"))]
|
|
|
|
self.inc_operations(&mut global.num_operations, expr.position())?;
|
|
|
|
|
|
|
|
let _parent_chain_type = parent_chain_type;
|
|
|
|
|
|
|
|
match expr {
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::FnCall(x, ..) if _parent_chain_type == ChainType::Dotting && !x.is_qualified() => {
|
2022-01-07 05:19:01 +01:00
|
|
|
let crate::ast::FnCallExpr {
|
|
|
|
args, constants, ..
|
|
|
|
} = x.as_ref();
|
|
|
|
|
|
|
|
let (values, pos) = args.iter().try_fold(
|
|
|
|
(crate::FnArgsVec::with_capacity(args.len()), Position::NONE),
|
|
|
|
|(mut values, mut pos), expr| -> RhaiResultOf<_> {
|
|
|
|
let (value, arg_pos) = self.get_arg_value(
|
2022-02-02 15:42:33 +01:00
|
|
|
scope, global, state, lib, this_ptr, expr, constants, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)?;
|
|
|
|
if values.is_empty() {
|
|
|
|
pos = arg_pos;
|
|
|
|
}
|
|
|
|
values.push(value.flatten());
|
|
|
|
Ok((values, pos))
|
|
|
|
},
|
|
|
|
)?;
|
|
|
|
|
|
|
|
idx_values.push(super::ChainArgument::from_fn_call_args(values, pos));
|
|
|
|
}
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::FnCall(..) if _parent_chain_type == ChainType::Dotting => {
|
2022-01-07 05:19:01 +01:00
|
|
|
unreachable!("function call in dot chain should not be namespace-qualified")
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::Property(.., pos) if _parent_chain_type == ChainType::Dotting => {
|
2022-01-28 03:11:40 +01:00
|
|
|
idx_values.push(super::ChainArgument::Property(*pos))
|
2022-01-07 05:19:01 +01:00
|
|
|
}
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::Property(..) => unreachable!("unexpected Expr::Property for indexing"),
|
2022-01-07 05:19:01 +01:00
|
|
|
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::Index(x, term, ..) | Expr::Dot(x, term, ..) if !terminate_chaining => {
|
2022-01-07 05:19:01 +01:00
|
|
|
let crate::ast::BinaryExpr { lhs, rhs, .. } = x.as_ref();
|
|
|
|
|
|
|
|
// Evaluate in left-to-right order
|
|
|
|
let lhs_arg_val = match lhs {
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::Property(.., pos) if _parent_chain_type == ChainType::Dotting => {
|
2022-01-28 03:11:40 +01:00
|
|
|
super::ChainArgument::Property(*pos)
|
2022-01-07 05:19:01 +01:00
|
|
|
}
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::Property(..) => unreachable!("unexpected Expr::Property for indexing"),
|
2022-01-07 05:19:01 +01:00
|
|
|
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::FnCall(x, ..)
|
2022-01-07 05:19:01 +01:00
|
|
|
if _parent_chain_type == ChainType::Dotting && !x.is_qualified() =>
|
|
|
|
{
|
|
|
|
let crate::ast::FnCallExpr {
|
|
|
|
args, constants, ..
|
|
|
|
} = x.as_ref();
|
|
|
|
|
|
|
|
let (values, pos) = args.iter().try_fold(
|
|
|
|
(crate::FnArgsVec::with_capacity(args.len()), Position::NONE),
|
|
|
|
|(mut values, mut pos), expr| -> RhaiResultOf<_> {
|
|
|
|
let (value, arg_pos) = self.get_arg_value(
|
2022-02-02 15:42:33 +01:00
|
|
|
scope, global, state, lib, this_ptr, expr, constants, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)?;
|
|
|
|
if values.is_empty() {
|
|
|
|
pos = arg_pos
|
|
|
|
}
|
|
|
|
values.push(value.flatten());
|
|
|
|
Ok((values, pos))
|
|
|
|
},
|
|
|
|
)?;
|
|
|
|
super::ChainArgument::from_fn_call_args(values, pos)
|
|
|
|
}
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Expr::FnCall(..) if _parent_chain_type == ChainType::Dotting => {
|
2022-01-07 05:19:01 +01:00
|
|
|
unreachable!("function call in dot chain should not be namespace-qualified")
|
|
|
|
}
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
|
|
|
expr if _parent_chain_type == ChainType::Dotting => {
|
|
|
|
unreachable!("invalid dot expression: {:?}", expr);
|
|
|
|
}
|
|
|
|
#[cfg(not(feature = "no_index"))]
|
|
|
|
_ if _parent_chain_type == ChainType::Indexing => self
|
|
|
|
.eval_expr(scope, global, state, lib, this_ptr, lhs, level)
|
|
|
|
.map(|v| {
|
2022-02-04 05:04:33 +01:00
|
|
|
super::ChainArgument::from_index_value(
|
|
|
|
v.flatten(),
|
|
|
|
lhs.start_position(),
|
|
|
|
)
|
2022-01-07 05:19:01 +01:00
|
|
|
})?,
|
|
|
|
expr => unreachable!("unknown chained expression: {:?}", expr),
|
|
|
|
};
|
|
|
|
|
|
|
|
// Push in reverse order
|
|
|
|
let chain_type = expr.into();
|
|
|
|
|
|
|
|
self.eval_dot_index_chain_arguments(
|
|
|
|
scope, global, state, lib, this_ptr, rhs, *term, chain_type, idx_values, size,
|
|
|
|
level,
|
|
|
|
)?;
|
|
|
|
|
|
|
|
idx_values.push(lhs_arg_val);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
|
|
|
_ if _parent_chain_type == ChainType::Dotting => {
|
|
|
|
unreachable!("invalid dot expression: {:?}", expr);
|
|
|
|
}
|
|
|
|
#[cfg(not(feature = "no_index"))]
|
|
|
|
_ if _parent_chain_type == ChainType::Indexing => idx_values.push(
|
|
|
|
self.eval_expr(scope, global, state, lib, this_ptr, expr, level)
|
|
|
|
.map(|v| {
|
2022-02-04 05:04:33 +01:00
|
|
|
super::ChainArgument::from_index_value(v.flatten(), expr.start_position())
|
2022-01-07 05:19:01 +01:00
|
|
|
})?,
|
|
|
|
),
|
|
|
|
_ => unreachable!("unknown chained expression: {:?}", expr),
|
|
|
|
}
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Get the value at the indexed position of a base type.
|
|
|
|
/// [`Position`] in [`EvalAltResult`] may be [`NONE`][Position::NONE] and should be set afterwards.
|
|
|
|
fn get_indexed_mut<'t>(
|
|
|
|
&self,
|
|
|
|
global: &mut GlobalRuntimeState,
|
|
|
|
state: &mut EvalState,
|
|
|
|
lib: &[&Module],
|
|
|
|
target: &'t mut Dynamic,
|
|
|
|
idx: Dynamic,
|
2022-01-13 11:13:27 +01:00
|
|
|
pos: Position,
|
2022-01-07 05:19:01 +01:00
|
|
|
add_if_not_found: bool,
|
|
|
|
use_indexers: bool,
|
|
|
|
level: usize,
|
|
|
|
) -> RhaiResultOf<Target<'t>> {
|
|
|
|
#[cfg(not(feature = "unchecked"))]
|
|
|
|
self.inc_operations(&mut global.num_operations, Position::NONE)?;
|
|
|
|
|
|
|
|
let mut idx = idx;
|
|
|
|
let _add_if_not_found = add_if_not_found;
|
|
|
|
|
|
|
|
match target {
|
|
|
|
#[cfg(not(feature = "no_index"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Dynamic(Union::Array(arr, ..)) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
// val_array[idx]
|
|
|
|
let index = idx
|
|
|
|
.as_int()
|
2022-01-13 11:13:27 +01:00
|
|
|
.map_err(|typ| self.make_type_mismatch_err::<crate::INT>(typ, pos))?;
|
|
|
|
let len = arr.len();
|
2022-01-16 15:54:28 +01:00
|
|
|
let arr_idx = super::calc_index(len, index, true, || {
|
2022-01-15 03:24:08 +01:00
|
|
|
ERR::ErrorArrayBounds(len, index, pos).into()
|
|
|
|
})?;
|
2022-01-07 05:19:01 +01:00
|
|
|
|
2022-01-13 11:13:27 +01:00
|
|
|
Ok(arr.get_mut(arr_idx).map(Target::from).unwrap())
|
2022-01-07 05:19:01 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(not(feature = "no_index"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Dynamic(Union::Blob(arr, ..)) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
// val_blob[idx]
|
|
|
|
let index = idx
|
|
|
|
.as_int()
|
2022-01-13 11:13:27 +01:00
|
|
|
.map_err(|typ| self.make_type_mismatch_err::<crate::INT>(typ, pos))?;
|
|
|
|
let len = arr.len();
|
2022-01-16 15:54:28 +01:00
|
|
|
let arr_idx = super::calc_index(len, index, true, || {
|
2022-01-15 03:24:08 +01:00
|
|
|
ERR::ErrorArrayBounds(len, index, pos).into()
|
|
|
|
})?;
|
2022-01-07 05:19:01 +01:00
|
|
|
|
2022-01-13 11:13:27 +01:00
|
|
|
let value = arr.get(arr_idx).map(|&v| (v as crate::INT).into()).unwrap();
|
2022-01-07 05:19:01 +01:00
|
|
|
|
|
|
|
Ok(Target::BlobByte {
|
|
|
|
source: target,
|
|
|
|
value,
|
|
|
|
index: arr_idx,
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(not(feature = "no_object"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Dynamic(Union::Map(map, ..)) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
// val_map[idx]
|
|
|
|
let index = idx.read_lock::<crate::ImmutableString>().ok_or_else(|| {
|
2022-01-13 11:13:27 +01:00
|
|
|
self.make_type_mismatch_err::<crate::ImmutableString>(idx.type_name(), pos)
|
2022-01-07 05:19:01 +01:00
|
|
|
})?;
|
|
|
|
|
|
|
|
if _add_if_not_found && !map.contains_key(index.as_str()) {
|
|
|
|
map.insert(index.clone().into(), Dynamic::UNIT);
|
|
|
|
}
|
|
|
|
|
|
|
|
Ok(map
|
|
|
|
.get_mut(index.as_str())
|
|
|
|
.map(Target::from)
|
|
|
|
.unwrap_or_else(|| Target::from(Dynamic::UNIT)))
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(not(feature = "no_index"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Dynamic(Union::Int(value, ..))
|
2022-01-07 05:19:01 +01:00
|
|
|
if idx.is::<crate::ExclusiveRange>() || idx.is::<crate::InclusiveRange>() =>
|
|
|
|
{
|
|
|
|
// val_int[range]
|
|
|
|
const BITS: usize = std::mem::size_of::<crate::INT>() * 8;
|
|
|
|
|
|
|
|
let (shift, mask) = if let Some(range) = idx.read_lock::<crate::ExclusiveRange>() {
|
|
|
|
let start = range.start;
|
|
|
|
let end = range.end;
|
|
|
|
|
2022-01-16 15:54:28 +01:00
|
|
|
let start = super::calc_index(BITS, start, false, || {
|
2022-01-15 03:24:08 +01:00
|
|
|
ERR::ErrorBitFieldBounds(BITS, start, pos).into()
|
2022-01-13 11:13:27 +01:00
|
|
|
})?;
|
2022-01-16 15:54:28 +01:00
|
|
|
let end = super::calc_index(BITS, end, false, || {
|
2022-01-15 03:24:08 +01:00
|
|
|
ERR::ErrorBitFieldBounds(BITS, end, pos).into()
|
2022-01-13 11:13:27 +01:00
|
|
|
})?;
|
|
|
|
|
|
|
|
if end <= start {
|
2022-01-07 05:19:01 +01:00
|
|
|
(0, 0)
|
2022-01-13 11:13:27 +01:00
|
|
|
} else if end == BITS && start == 0 {
|
2022-01-07 05:19:01 +01:00
|
|
|
// -1 = all bits set
|
|
|
|
(0, -1)
|
|
|
|
} else {
|
|
|
|
(
|
|
|
|
start as u8,
|
|
|
|
// 2^bits - 1
|
2022-01-13 15:51:56 +01:00
|
|
|
(((2 as crate::UNSIGNED_INT).pow((end - start) as u32) - 1)
|
|
|
|
as crate::INT)
|
2022-01-13 11:13:27 +01:00
|
|
|
<< start,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
|
|
|
}
|
|
|
|
} else if let Some(range) = idx.read_lock::<crate::InclusiveRange>() {
|
|
|
|
let start = *range.start();
|
|
|
|
let end = *range.end();
|
|
|
|
|
2022-01-16 15:54:28 +01:00
|
|
|
let start = super::calc_index(BITS, start, false, || {
|
2022-01-15 03:24:08 +01:00
|
|
|
ERR::ErrorBitFieldBounds(BITS, start, pos).into()
|
2022-01-13 11:13:27 +01:00
|
|
|
})?;
|
2022-01-16 15:54:28 +01:00
|
|
|
let end = super::calc_index(BITS, end, false, || {
|
2022-01-15 03:24:08 +01:00
|
|
|
ERR::ErrorBitFieldBounds(BITS, end, pos).into()
|
2022-01-13 11:13:27 +01:00
|
|
|
})?;
|
|
|
|
|
|
|
|
if end < start {
|
2022-01-07 05:19:01 +01:00
|
|
|
(0, 0)
|
2022-01-13 11:13:27 +01:00
|
|
|
} else if end == BITS - 1 && start == 0 {
|
2022-01-07 05:19:01 +01:00
|
|
|
// -1 = all bits set
|
|
|
|
(0, -1)
|
|
|
|
} else {
|
|
|
|
(
|
|
|
|
start as u8,
|
|
|
|
// 2^bits - 1
|
2022-01-13 15:51:56 +01:00
|
|
|
(((2 as crate::UNSIGNED_INT).pow((end - start + 1) as u32) - 1)
|
|
|
|
as crate::INT)
|
2022-01-07 05:19:01 +01:00
|
|
|
<< start,
|
|
|
|
)
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
unreachable!("Range or RangeInclusive expected but gets {:?}", idx);
|
|
|
|
};
|
|
|
|
|
|
|
|
let field_value = (*value & mask) >> shift;
|
|
|
|
|
|
|
|
Ok(Target::BitField {
|
|
|
|
source: target,
|
|
|
|
value: field_value.into(),
|
|
|
|
mask,
|
|
|
|
shift,
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(not(feature = "no_index"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Dynamic(Union::Int(value, ..)) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
// val_int[idx]
|
|
|
|
let index = idx
|
|
|
|
.as_int()
|
2022-01-13 11:13:27 +01:00
|
|
|
.map_err(|typ| self.make_type_mismatch_err::<crate::INT>(typ, pos))?;
|
2022-01-07 05:19:01 +01:00
|
|
|
|
|
|
|
const BITS: usize = std::mem::size_of::<crate::INT>() * 8;
|
|
|
|
|
2022-01-16 15:54:28 +01:00
|
|
|
let bit = super::calc_index(BITS, index, true, || {
|
2022-01-15 03:24:08 +01:00
|
|
|
ERR::ErrorBitFieldBounds(BITS, index, pos).into()
|
2022-01-13 11:13:27 +01:00
|
|
|
})?;
|
|
|
|
|
|
|
|
let bit_value = (*value & (1 << bit)) != 0;
|
2022-01-07 05:19:01 +01:00
|
|
|
|
|
|
|
Ok(Target::Bit {
|
|
|
|
source: target,
|
|
|
|
value: bit_value.into(),
|
2022-01-13 11:13:27 +01:00
|
|
|
bit: bit as u8,
|
2022-01-07 05:19:01 +01:00
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(not(feature = "no_index"))]
|
2022-02-08 02:02:15 +01:00
|
|
|
Dynamic(Union::Str(s, ..)) => {
|
2022-01-07 05:19:01 +01:00
|
|
|
// val_string[idx]
|
|
|
|
let index = idx
|
|
|
|
.as_int()
|
2022-01-13 11:13:27 +01:00
|
|
|
.map_err(|typ| self.make_type_mismatch_err::<crate::INT>(typ, pos))?;
|
2022-01-07 05:19:01 +01:00
|
|
|
|
|
|
|
let (ch, offset) = if index >= 0 {
|
|
|
|
let offset = index as usize;
|
|
|
|
(
|
|
|
|
s.chars().nth(offset).ok_or_else(|| {
|
|
|
|
let chars_len = s.chars().count();
|
2022-01-13 11:13:27 +01:00
|
|
|
ERR::ErrorStringBounds(chars_len, index, pos)
|
2022-01-07 05:19:01 +01:00
|
|
|
})?,
|
|
|
|
offset,
|
|
|
|
)
|
|
|
|
} else if let Some(abs_index) = index.checked_abs() {
|
|
|
|
let offset = abs_index as usize;
|
|
|
|
(
|
|
|
|
// Count from end if negative
|
|
|
|
s.chars().rev().nth(offset - 1).ok_or_else(|| {
|
|
|
|
let chars_len = s.chars().count();
|
2022-01-13 11:13:27 +01:00
|
|
|
ERR::ErrorStringBounds(chars_len, index, pos)
|
2022-01-07 05:19:01 +01:00
|
|
|
})?,
|
|
|
|
offset,
|
|
|
|
)
|
|
|
|
} else {
|
|
|
|
let chars_len = s.chars().count();
|
2022-01-13 11:13:27 +01:00
|
|
|
return Err(ERR::ErrorStringBounds(chars_len, index, pos).into());
|
2022-01-07 05:19:01 +01:00
|
|
|
};
|
|
|
|
|
|
|
|
Ok(Target::StringChar {
|
|
|
|
source: target,
|
|
|
|
value: ch.into(),
|
|
|
|
index: offset,
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
_ if use_indexers => {
|
|
|
|
let args = &mut [target, &mut idx];
|
|
|
|
let hash_get = crate::ast::FnCallHashes::from_native(global.hash_idx_get());
|
2022-01-17 14:51:04 +01:00
|
|
|
let fn_name = crate::engine::FN_IDX_GET;
|
|
|
|
let pos = Position::NONE;
|
|
|
|
|
2022-01-07 05:19:01 +01:00
|
|
|
self.exec_fn_call(
|
2022-02-02 15:42:33 +01:00
|
|
|
None, global, state, lib, fn_name, hash_get, args, true, true, pos, level,
|
2022-01-07 05:19:01 +01:00
|
|
|
)
|
2022-02-08 02:02:15 +01:00
|
|
|
.map(|(v, ..)| v.into())
|
2022-01-07 05:19:01 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
_ => Err(ERR::ErrorIndexingType(
|
|
|
|
format!(
|
|
|
|
"{} [{}]",
|
|
|
|
self.map_type_name(target.type_name()),
|
|
|
|
self.map_type_name(idx.type_name())
|
|
|
|
),
|
|
|
|
Position::NONE,
|
|
|
|
)
|
|
|
|
.into()),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|