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LibJS: Parse assert clauses of in- and export statements

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Based on proposal: https://tc39.es/proposal-import-assertions
Since imports are not supported yet this is not functional.
This commit is contained in:
davidot 2021-12-20 15:29:25 +01:00 • committed by Linus Groh
parent 81312986fe
commit be3b806487
4 changed files with 124 additions and 17 deletions
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35
Userland/Libraries/LibJS/AST.h
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@ -217,6 +217,29 @@ private:
NonnullRefPtrVector<FunctionDeclaration> m_functions_hoistable_with_annexB_extension;
};
// 2.9 ModuleRequest Records, https://tc39.es/proposal-import-assertions/#sec-modulerequest-record
struct ModuleRequest {
struct Assertion {
String key;
String value;
};
ModuleRequest() = default;
explicit ModuleRequest(String specifier)
: module_specifier(move(specifier))
{
}
void add_assertion(String key, String value)
{
assertions.empend(move(key), move(value));
}
String module_specifier; // [[Specifier]]
Vector<Assertion> assertions; // [[Assertions]]
};
class ImportStatement final : public Statement {
public:
struct ImportEntry {
@ -224,9 +247,9 @@ public:
String local_name;
};
explicit ImportStatement(SourceRange source_range, StringView from_module, Vector<ImportEntry> entries = {})
explicit ImportStatement(SourceRange source_range, ModuleRequest from_module, Vector<ImportEntry> entries = {})
: Statement(source_range)
, m_module_request(from_module)
, m_module_request(move(from_module))
, m_entries(move(entries))
{
}
@ -238,14 +261,14 @@ public:
bool has_bound_name(StringView name) const;
private:
String m_module_request;
ModuleRequest m_module_request;
Vector<ImportEntry> m_entries;
};
class ExportStatement final : public Statement {
public:
struct ExportEntry {
enum Kind {
enum class Kind {
ModuleRequest,
LocalExport
} kind;
@ -253,13 +276,13 @@ public:
String export_name;
// Only if module request
String module_request;
ModuleRequest module_request;
// Has just one of ones below
String local_or_import_name;
ExportEntry(String export_name, String local_name)
: kind(LocalExport)
: kind(Kind::LocalExport)
, export_name(move(export_name))
, local_or_import_name(move(local_name))
{