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@ -3,6 +3,7 @@ use crate::{
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vm::{BindingOpcode, Opcode}, |
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Context, JsNativeError, JsResult, |
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}; |
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use boa_ast::operations::annex_b_function_declarations_names; |
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use boa_ast::{ |
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declaration::Binding, |
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expression::Identifier, |
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@ -19,9 +20,6 @@ use boa_ast::{
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}; |
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use boa_interner::{JStrRef, Sym}; |
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#[cfg(feature = "annex-b")] |
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use boa_ast::operations::annex_b_function_declarations_names; |
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use super::{Operand, ToJsString}; |
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/// `GlobalDeclarationInstantiation ( script, env )`
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@ -33,34 +31,16 @@ use super::{Operand, ToJsString};
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/// - [ECMAScript reference][spec]
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///
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/// [spec]: https://tc39.es/ecma262/#sec-globaldeclarationinstantiation
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#[cfg(not(feature = "annex-b"))] |
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#[allow(clippy::unnecessary_wraps)] |
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#[allow(clippy::ptr_arg)] |
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pub(crate) fn global_declaration_instantiation_context( |
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_annex_b_function_names: &mut Vec<Identifier>, |
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_script: &Script, |
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_env: &Scope, |
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_context: &mut Context, |
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) -> JsResult<()> { |
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Ok(()) |
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} |
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/// `GlobalDeclarationInstantiation ( script, env )`
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///
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/// This diverges from the specification by separating the context from the compilation process.
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/// Many steps are skipped that are done during bytecode compilation.
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///
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/// More information:
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/// - [ECMAScript reference][spec]
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///
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/// [spec]: https://tc39.es/ecma262/#sec-globaldeclarationinstantiation
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#[cfg(feature = "annex-b")] |
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pub(crate) fn global_declaration_instantiation_context( |
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annex_b_function_names: &mut Vec<Identifier>, |
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script: &Script, |
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env: &Scope, |
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context: &mut Context, |
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) -> JsResult<()> { |
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if cfg!(not(feature = "annex-b")) { |
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return Ok(()); |
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} |
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// SKIP: 1. Let lexNames be the LexicallyDeclaredNames of script.
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// SKIP: 2. Let varNames be the VarDeclaredNames of script.
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// SKIP: 3. For each element name of lexNames, do
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@ -198,11 +178,11 @@ pub(crate) fn global_declaration_instantiation_context(
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///
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/// [spec]: https://tc39.es/ecma262/#sec-evaldeclarationinstantiation
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pub(crate) fn eval_declaration_instantiation_context( |
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#[allow(unused, clippy::ptr_arg)] annex_b_function_names: &mut Vec<Identifier>, |
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annex_b_function_names: &mut Vec<Identifier>, |
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body: &Script, |
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#[allow(unused)] strict: bool, |
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#[allow(unused)] var_env: &Scope, |
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#[allow(unused)] lex_env: &Scope, |
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strict: bool, |
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var_env: &Scope, |
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lex_env: &Scope, |
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context: &mut Context, |
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) -> JsResult<()> { |
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// SKIP: 3. If strict is false, then
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@ -234,18 +214,19 @@ pub(crate) fn eval_declaration_instantiation_context(
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.into()); |
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} |
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if cfg!(not(feature = "annex-b")) { |
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return Ok(()); |
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} |
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// 2. Let varDeclarations be the VarScopedDeclarations of body.
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#[cfg(feature = "annex-b")] |
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let var_declarations = var_scoped_declarations(body); |
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// SKIP: 8. Let functionsToInitialize be a new empty List.
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// 9. Let declaredFunctionNames be a new empty List.
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#[cfg(feature = "annex-b")] |
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let mut declared_function_names = Vec::new(); |
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// 10. For each element d of varDeclarations, in reverse List order, do
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#[cfg(feature = "annex-b")] |
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for declaration in var_declarations.iter().rev() { |
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// a. If d is not either a VariableDeclaration, a ForBinding, or a BindingIdentifier, then
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// a.i. Assert: d is either a FunctionDeclaration, a GeneratorDeclaration, an AsyncFunctionDeclaration, or an AsyncGeneratorDeclaration.
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@ -272,7 +253,6 @@ pub(crate) fn eval_declaration_instantiation_context(
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// 11. NOTE: Annex B.3.2.3 adds additional steps at this point.
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// 11. If strict is false, then
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#[cfg(feature = "annex-b")] |
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if !strict { |
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let lexically_declared_names = lexically_declared_names(body); |
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@ -608,7 +588,7 @@ impl ByteCompiler<'_> {
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pub(crate) fn eval_declaration_instantiation( |
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&mut self, |
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body: &Script, |
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#[allow(unused_variables)] strict: bool, |
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strict: bool, |
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var_env: &Scope, |
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bindings: EvalDeclarationBindings, |
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) { |
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@ -1049,8 +1029,7 @@ impl ByteCompiler<'_> {
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// 27. If hasParameterExpressions is false, then
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// 28. Else,
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#[allow(unused_variables, unused_mut)] |
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let (mut instantiated_var_names, mut variable_scope) = |
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let (instantiated_var_names, variable_scope) = |
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if let Some(scope) = scopes.parameters_scope() { |
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// a. NOTE: A separate Environment Record is needed to ensure that closures created by
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// expressions in the formal parameter list do not have
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@ -1060,7 +1039,7 @@ impl ByteCompiler<'_> {
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let scope_index = self.push_scope(scope); |
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self.emit_with_varying_operand(Opcode::PushScope, scope_index); |
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let mut variable_scope = self.lexical_scope.clone(); |
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let variable_scope = self.lexical_scope.clone(); |
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// d. Let instantiatedVarNames be a new empty List.
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let mut instantiated_var_names = Vec::new(); |
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@ -1136,6 +1115,7 @@ impl ByteCompiler<'_> {
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// 29. If strict is false, then
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#[cfg(feature = "annex-b")] |
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if !strict { |
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let mut instantiated_var_names = instantiated_var_names; |
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// a. For each FunctionDeclaration f that is directly contained in the StatementList
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// of a Block, CaseClause, or DefaultClause, do
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for f in annex_b_function_declarations_names(body) { |
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José Julián Espina
1 month ago