74 lines
1.8 KiB
Rust
74 lines
1.8 KiB
Rust
use serde::{Deserialize, Serialize};
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use crate::{
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context::Context,
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error::{RuntimeError, ValidationError},
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identifier::Identifier,
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};
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use super::{AbstractNode, Evaluation, Type, TypeConstructor};
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#[derive(Clone, Debug, Eq, PartialEq, PartialOrd, Ord, Serialize, Deserialize)]
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pub struct StructureDefinition {
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name: Identifier,
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fields: Vec<(Identifier, TypeConstructor)>,
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}
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impl StructureDefinition {
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pub fn new(name: Identifier, fields: Vec<(Identifier, TypeConstructor)>) -> Self {
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Self { name, fields }
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}
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}
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impl AbstractNode for StructureDefinition {
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fn define_types(&self, context: &Context) -> Result<(), ValidationError> {
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let mut fields = Vec::with_capacity(self.fields.len());
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for (identifier, constructor) in &self.fields {
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let r#type = constructor.construct(&context)?;
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fields.push((identifier.clone(), r#type));
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}
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let struct_type = Type::Structure {
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name: self.name.clone(),
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fields,
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};
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context.set_type(self.name.clone(), struct_type)?;
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Ok(())
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}
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fn validate(&self, _: &Context, _: bool) -> Result<(), ValidationError> {
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Ok(())
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}
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fn evaluate(
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self,
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context: &Context,
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_manage_memory: bool,
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) -> Result<Option<Evaluation>, RuntimeError> {
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let mut fields = Vec::with_capacity(self.fields.len());
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for (identifier, constructor) in self.fields {
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let r#type = constructor.construct(&context)?;
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fields.push((identifier, r#type));
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}
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let struct_type = Type::Structure {
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name: self.name.clone(),
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fields,
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};
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context.set_type(self.name, struct_type)?;
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Ok(None)
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}
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fn expected_type(&self, _: &Context) -> Result<Option<Type>, ValidationError> {
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Ok(None)
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}
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}
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