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minor fixes for script optimization, exporting of attr_name, script layout tweak

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This commit is contained in:
Vern Paxson 2023-12-04 16:48:19 -08:00
parent c3762ba9d3
commit a927d61e59
3 changed files with 30 additions and 4 deletions
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29
src/parse.y
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@ -132,6 +132,10 @@ std::string zeek::detail::current_module = GLOBAL_MODULE_NAME;
bool is_export = false; // true if in an export {} block
// Used to temporarily turn off "is_export". A stack because the need
// to do so can nest.
std::vector<bool> hold_is_export;
// When parsing an expression for the debugger, where to put the result
// (obviously not reentrant).
extern Expr* g_curr_debug_expr;
@ -586,7 +590,10 @@ expr:
if ( IsArithmetic($1->GetType()->Tag()) )
{
ExprPtr sum = make_intrusive<AddExpr>(lhs, rhs);
// Script optimization assumes that each AST
// node is distinct, hence the call to
// Duplicate() here.
ExprPtr sum = make_intrusive<AddExpr>(lhs->Duplicate(), rhs);
if ( sum->GetType()->Tag() != tag1 )
sum = make_intrusive<ArithCoerceExpr>(sum, tag1);
@ -1584,8 +1591,24 @@ lambda_body:
;
anonymous_function:
TOK_FUNCTION begin_lambda conditional_list lambda_body
{ $$ = $4; }
TOK_FUNCTION
{
// "is_export" is used in some contexts to determine
// whether a given newly seen identifier is a global.
// We're about parse a lambda body, for which all of
// the new identifiers should be locals, not globals,
// so we need to turn off "is_export" here. We use
// a stack because lambdas can have additional lambdas
// inside their bodies.
hold_is_export.push_back(is_export);
is_export = false;
}
begin_lambda conditional_list lambda_body
{
is_export = hold_is_export.back();
hold_is_export.pop_back();
$$ = $5;
}
;
begin_lambda: