// expr_stmt: expression_list
// expression_list: expression ( "," expression )* [","]
// assignment_stmt: (target_list "=")+ (expression_list | yield_expression)
// augmented_assignment_stmt ::= target augop (expression_list | yield_expression)
// augop: '+=' | '-=' | '*=' | '/=' | '%=' | '**=' | '>>=' | '<<=' | '&=' | '^=' | '|=' | '//='
private Statement ParseExprStmt() {
Expression ret = ParseTestListAsExpr();
if (ret is ErrorExpression) {
NextToken();
}
if (PeekToken(TokenKind.Assign)) {
return FinishAssignments(ret);
} else {
PythonOperator op = GetAssignOperator(PeekToken());
if (op != PythonOperator.None) {
NextToken();
Expression rhs;
if (MaybeEat(TokenKind.KeywordYield)) {
rhs = ParseYieldExpression();
} else {
rhs = ParseTestListAsExpr();
}
string assignError = ret.CheckAugmentedAssign();
if (assignError != null) {
ReportSyntaxError(assignError);
}
AugmentedAssignStatement aug = new AugmentedAssignStatement(op, ret, rhs);
aug.SetLoc(_globalParent, ret.StartIndex, GetEnd());
return aug;
} else {
Statement stmt = new ExpressionStatement(ret);
stmt.SetLoc(_globalParent, ret.IndexSpan);
return stmt;
}
}
}
// expr_stmt: expression_list
// expression_list: expression ( "," expression )* [","]
// assignment_stmt: (target_list "=")+ (expression_list | yield_expression)
// augmented_assignment_stmt ::= target augop (expression_list | yield_expression)
// augop: '+=' | '-=' | '*=' | '/=' | '%=' | '**=' | '>>=' | '<<=' | '&=' | '^=' | '|=' | '//='
private Statement ParseExprStmt() {
Expression ret = ParseTestListAsExpr(false);
if (ret is ErrorExpression) {
NextToken();
}
if (PeekToken(TokenKind.Assign)) {
return FinishAssignments(ret);
} else {
PythonOperator op = GetAssignOperator(PeekToken());
if (op != PythonOperator.None) {
NextToken();
Expression rhs;
if (MaybeEat(TokenKind.KeywordYield)) {
rhs = ParseYieldExpression();
} else {
rhs = ParseTestListAsExpr(false);
}
if (ret is ListExpression || ret is TupleExpression) {
ReportSyntaxError(ret.Start, ret.End, "illegal expression for augmented assignment");
}
AugmentedAssignStatement aug = new AugmentedAssignStatement(op, ret, rhs);
aug.SetLoc(ret.Start, GetEnd());
return aug;
} else {
Statement stmt = new ExpressionStatement(ret);
stmt.SetLoc(ret.Span);
return stmt;
}
}
}