[vala/wip/genie: 715/716] genie: Extend "for" syntax
- From: Rico Tzschichholz <ricotz src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [vala/wip/genie: 715/716] genie: Extend "for" syntax
- Date: Thu, 7 Sep 2017 13:08:51 +0000 (UTC)
commit 247e932144b7f0df3ebdd947fd959a5b087f9dea
Author: vlad1777d <naumovvladislav mail ru>
Date: Sun Apr 30 14:19:49 2017 +0300
genie: Extend "for" syntax
https://bugzilla.gnome.org/show_bug.cgi?id=781966
tests/genie/for/for_with_ellipsis.gs | 501 ++++++++++++++++++++++++++++++++++
vala/valagenieparser.vala | 216 +++++++++++++--
2 files changed, 695 insertions(+), 22 deletions(-)
---
diff --git a/tests/genie/for/for_with_ellipsis.gs b/tests/genie/for/for_with_ellipsis.gs
new file mode 100644
index 0000000..68208b8
--- /dev/null
+++ b/tests/genie/for/for_with_ellipsis.gs
@@ -0,0 +1,501 @@
+/* --pkg="gee=0.8" needed
+Old syntax: "for var i = 1 to 10", "for var i = 1 ... 10"
+New syntax: "for i in 1 to 10", "for i in 1...10"
+*/
+
+init
+
+ old_syntax_int_up ()
+ old_syntax_int_down ()
+ old_syntax_var_up ()
+ old_syntax_var_down ()
+ old_syntax_int_up_ellipsis ()
+ old_syntax_int_down_ellipsis ()
+ old_syntax_var_up_ellipsis ()
+ old_syntax_var_down_ellipsis ()
+ old_syntax_int_up_zero_times ()
+ old_syntax_int_down_zero_times ()
+ old_syntax_var_up_zero_times ()
+ old_syntax_var_down_zero_times ()
+
+ new_syntax_int_up ()
+ new_syntax_int_down ()
+ new_syntax_var_up ()
+ new_syntax_var_down ()
+ new_syntax_int_up_ellipsis ()
+ new_syntax_int_down_ellipsis ()
+ new_syntax_var_up_ellipsis ()
+ new_syntax_var_down_ellipsis ()
+ new_syntax_int_up_zero_times ()
+ new_syntax_int_down_zero_times ()
+ new_syntax_var_up_zero_times ()
+ new_syntax_var_down_zero_times ()
+
+ new_syntax_up ()
+ new_syntax_down ()
+ new_syntax_up_ellipsis ()
+ new_syntax_down_ellipsis ()
+ new_syntax_up_zero_times ()
+ new_syntax_down_zero_times ()
+
+
+
+
+def old_syntax_int_up ()
+
+ var array_1 = new list of int
+
+ for a: int = 4 to 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def old_syntax_int_down ()
+
+ var array_1 = new list of int
+
+ for a: int = 8 downto 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def old_syntax_var_up ()
+
+ var array_1 = new list of int
+
+ for var a = 4 to 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def old_syntax_var_down ()
+
+ var array_1 = new list of int
+
+ for var a = 8 downto 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def old_syntax_int_up_ellipsis ()
+
+ var array_1 = new list of int
+
+ for a: int = 4 ... 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def old_syntax_int_down_ellipsis ()
+
+ var array_1 = new list of int
+
+ for a: int = 8 ... 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def old_syntax_var_up_ellipsis ()
+
+ var array_1 = new list of int
+
+ for var a = 4 ... 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def old_syntax_var_down_ellipsis ()
+
+ var array_1 = new list of int
+
+ for var a = 8 ... 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def old_syntax_int_up_zero_times ()
+
+ var array_1 = new list of int
+
+ for a: int = 8 to 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+def old_syntax_int_down_zero_times ()
+
+ var array_1 = new list of int
+
+ for a: int = 4 downto 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+def old_syntax_var_up_zero_times ()
+
+ var array_1 = new list of int
+
+ for var a = 8 to 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+def old_syntax_var_down_zero_times ()
+
+ var array_1 = new list of int
+
+ for var a = 4 downto 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+
+
+def new_syntax_int_up ()
+
+ var array_1 = new list of int
+
+ for a: int in 4 to 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def new_syntax_int_down ()
+
+ var array_1 = new list of int
+
+ for a: int in 8 downto 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def new_syntax_var_up ()
+
+ var array_1 = new list of int
+
+ for var a in 4 to 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def new_syntax_var_down ()
+
+ var array_1 = new list of int
+
+ for var a in 8 downto 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def new_syntax_int_up_ellipsis ()
+
+ var array_1 = new list of int
+
+ for a: int in 4 ... 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def new_syntax_int_down_ellipsis ()
+
+ var array_1 = new list of int
+
+ for a: int in 8 ... 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def new_syntax_var_up_ellipsis ()
+
+ var array_1 = new list of int
+
+ for var a in 4 ... 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def new_syntax_var_down_ellipsis ()
+
+ var array_1 = new list of int
+
+ for var a in 8 ... 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def new_syntax_int_up_zero_times ()
+
+ var array_1 = new list of int
+
+ for a: int in 8 to 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+def new_syntax_int_down_zero_times ()
+
+ var array_1 = new list of int
+
+ for a: int in 4 downto 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+def new_syntax_var_up_zero_times ()
+
+ var array_1 = new list of int
+
+ for var a in 8 to 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+def new_syntax_var_down_zero_times ()
+
+ var array_1 = new list of int
+
+ for var a in 4 downto 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+
+
+def new_syntax_up ()
+
+ var array_1 = new list of int
+
+ var c = 18 - 14
+
+ for a in c to 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def new_syntax_down ()
+
+ var array_1 = new list of int
+
+ c: int = 8
+
+ for a in c downto 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def new_syntax_up_ellipsis ()
+
+ var array_1 = new list of int
+
+ var c = 18 - 14
+
+ for a in c ... 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 4
+ assert array_1 [1] == 5
+ assert array_1 [2] == 6
+ assert array_1 [3] == 7
+ assert array_1 [4] == 8
+
+
+def new_syntax_down_ellipsis ()
+
+ var array_1 = new list of int
+
+ for a in 8 ... 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 5
+
+ assert array_1 [0] == 8
+ assert array_1 [1] == 7
+ assert array_1 [2] == 6
+ assert array_1 [3] == 5
+ assert array_1 [4] == 4
+
+
+def new_syntax_up_zero_times ()
+
+ var array_1 = new list of int
+
+ for a in 4 downto 8
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
+
+
+def new_syntax_down_zero_times ()
+
+ var array_1 = new list of int
+
+ for a in 8 to 4
+ array_1.add (a)
+
+ len_1: int = array_1.size
+ assert len_1 == 0
diff --git a/vala/valagenieparser.vala b/vala/valagenieparser.vala
index df4f66e..ed08cd7 100644
--- a/vala/valagenieparser.vala
+++ b/vala/valagenieparser.vala
@@ -1674,26 +1674,33 @@ public class Vala.Genie.Parser : CodeVisitor {
return expr;
}
-
- Statement get_for_statement_type () throws ParseError {
+ Statement parse_for_statement () throws ParseError {
var begin = get_location ();
- bool is_foreach = false;
+ bool to_downto_met = false;
+ bool in_met = false;
while (current () != TokenType.EOL && current () != TokenType.DO) {
next ();
+
if (accept (TokenType.IN)) {
- is_foreach = true;
- break;
+ in_met = true;
+ }
+ if (accept (TokenType.TO) || accept (TokenType.DOWNTO) || accept
(TokenType.ELLIPSIS)) {
+ to_downto_met = true;
}
}
-
+
rollback (begin);
-
- if (is_foreach) {
- return parse_foreach_statement ();
- } else {
- return parse_for_statement ();
+
+ if (to_downto_met && in_met) {
+ return parse_for_statement_with_in_operator_and_range ();
+ }
+ else if (in_met) {
+ return parse_for_statement_with_in_operator_and_iterator ();
+ }
+ else {
+ return parse_for_statement_with_var_operator_and_range ();
}
}
@@ -1756,7 +1763,7 @@ public class Vala.Genie.Parser : CodeVisitor {
stmt = parse_do_statement ();
break;
case TokenType.FOR:
- stmt = get_for_statement_type ();
+ stmt = parse_for_statement ();
break;
case TokenType.BREAK:
stmt = parse_break_statement ();
@@ -1879,7 +1886,7 @@ public class Vala.Genie.Parser : CodeVisitor {
case TokenType.CASE: return parse_switch_statement ();
case TokenType.WHILE: return parse_while_statement ();
case TokenType.DO: return parse_do_statement ();
- case TokenType.FOR: return get_for_statement_type ();
+ case TokenType.FOR: return parse_for_statement ();
case TokenType.BREAK: return parse_break_statement ();
case TokenType.CONTINUE: return parse_continue_statement ();
case TokenType.RETURN: return parse_return_statement ();
@@ -2101,15 +2108,21 @@ public class Vala.Genie.Parser : CodeVisitor {
return new DoStatement (body, condition, get_src (begin));
}
-
- Statement parse_for_statement () throws ParseError {
+ /** Parses "for" statement of such view: "for var i = 1 to 10"
+ * (or: "for i: int = 1 to 10", "for i = 1 to 10")
+ */
+ Statement parse_for_statement_with_var_operator_and_range () throws ParseError {
var begin = get_location ();
Block block = null;
Expression initializer = null;
Expression condition = null;
Expression iterator = null;
+ Expression int_start_expr = null; // for dynamic analysis
bool is_expr;
string id;
+ int int_amount = 0; // for static analysis
+ int int_start = 0;
+ int int_end = 0;
expect (TokenType.FOR);
@@ -2145,12 +2158,18 @@ public class Vala.Genie.Parser : CodeVisitor {
if (variable_type != null) {
type_copy = variable_type.copy ();
}
- var local = parse_local_variable (type_copy, id);
+ var local = parse_local_variable (type_copy, id);
block.add_statement (new DeclarationStatement (local, local.source_reference));
}
-
+ prev ();
+ if (accept (TokenType.INTEGER_LITERAL)) { // for static analysis
+ int_start = int.parse (get_last_string());
+ int_amount += 1;
+ prev ();
+ }
+ next ();
if (accept (TokenType.TO)) {
/* create expression for condition and incrementing iterator */
@@ -2160,10 +2179,8 @@ public class Vala.Genie.Parser : CodeVisitor {
var right = parse_primary_expression ();
condition = new BinaryExpression (BinaryOperator.LESS_THAN_OR_EQUAL, left, right,
to_src);
-
iterator = new PostfixExpression (left, true, to_src);
- } else {
- expect (TokenType.DOWNTO);
+ } else if (accept (TokenType.DOWNTO)) {
var downto_begin = get_location ();
var downto_src = get_src (downto_begin);
/* create expression for condition and decrementing iterator */
@@ -2171,8 +2188,42 @@ public class Vala.Genie.Parser : CodeVisitor {
var right = parse_primary_expression ();
condition = new BinaryExpression (BinaryOperator.GREATER_THAN_OR_EQUAL, left, right,
downto_src);
-
iterator = new PostfixExpression (left, false, downto_src);
+ } else {
+ expect (TokenType.ELLIPSIS);
+ var ellipsis_begin = get_location ();
+ var ellipsis_src_ref = get_src (ellipsis_begin);
+ /* create expression for condition and decrementing iterator */
+ var left = new MemberAccess (null, id, ellipsis_src_ref);
+ Expression right = null;
+ if (accept (TokenType.INTEGER_LITERAL)) { // for static analysis
+ prev ();
+ right = parse_primary_expression ();
+ int_end = int.parse (get_last_string());
+ int_amount += 1;
+ } else {
+ right = parse_primary_expression ();
+ }
+
+ if (int_amount >= 2) { // static analysis attempt
+ if (int_start <= int_end) {
+ condition = new BinaryExpression (BinaryOperator.LESS_THAN_OR_EQUAL,
left, right, ellipsis_src_ref);
+ iterator = new PostfixExpression (left, true, ellipsis_src_ref);
+ } else {
+ condition = new BinaryExpression
(BinaryOperator.GREATER_THAN_OR_EQUAL, left, right, ellipsis_src_ref);
+ iterator = new PostfixExpression (left, false, ellipsis_src_ref);
+ }
+ } else { // dynamic analysis
+ var first_lesser_second = new BinaryExpression
(BinaryOperator.LESS_THAN_OR_EQUAL, int_start_expr, right, ellipsis_src_ref);
+
+ var condition_if_increasing = new BinaryExpression
(BinaryOperator.LESS_THAN_OR_EQUAL, left, right, ellipsis_src_ref);
+ var condition_if_decreasing = new BinaryExpression
(BinaryOperator.GREATER_THAN_OR_EQUAL, left, right, ellipsis_src_ref);
+ condition = new ConditionalExpression (first_lesser_second,
condition_if_increasing, condition_if_decreasing, ellipsis_src_ref);
+
+ var iterator_if_increasing = new PostfixExpression (left, true,
ellipsis_src_ref);
+ var iterator_if_decreasing = new PostfixExpression (left, false,
ellipsis_src_ref);
+ iterator = new ConditionalExpression (first_lesser_second,
iterator_if_increasing, iterator_if_decreasing, ellipsis_src_ref);
+ }
}
if (!accept (TokenType.EOL)) {
@@ -2196,7 +2247,10 @@ public class Vala.Genie.Parser : CodeVisitor {
}
}
- Statement parse_foreach_statement () throws ParseError {
+ /** Parses "for" statement of such view: "for i in array_4"
+ * (or "for var i in array_4", or "for i: int in array_4")
+ */
+ Statement parse_for_statement_with_in_operator_and_iterator () throws ParseError {
var begin = get_location ();
DataType type = null;
string id = null;
@@ -2222,6 +2276,124 @@ public class Vala.Genie.Parser : CodeVisitor {
return new ForeachStatement (type, id, collection, body, src);
}
+ /** Parses "for" statement of such view: "for i in 1 to 10"
+ * (or "for var i in 1 to 10", or "for i: int in 1 to 10")
+ */
+ Statement parse_for_statement_with_in_operator_and_range() throws ParseError {
+ var begin = get_location ();
+ expect (TokenType.FOR);
+
+ Expression initializer = null;
+ Expression condition = null;
+ Expression iterator = null;
+ Expression variable = null;
+ SourceReference variable_src = null;
+ DataType variable_type = null;
+ string variable_id = null;
+ int int_amount = 0; // for static analysis
+ int to_downto_dots = 1; // to -> 1; downto -> -1; three dots -> 0
+ int int_start = 0; // for static check
+ int int_end = 0; // just declaration, it'll change later
+ Expression int_start_expr = null;
+ Expression int_end_expr = null;
+ var block = new Block (get_src (begin));
+
+ var int_type_symbol = new UnresolvedSymbol (null, "int", get_src (begin));
+ variable_type = new UnresolvedType.from_symbol (int_type_symbol, get_src (begin)); //
default value
+
+ if (accept (TokenType.VAR)) {
+ variable_src = get_src ( get_location () );
+ variable = parse_primary_expression (); // uses parse_simple_name (); for simple
names, returns MemberAccess
+ variable_id = get_last_string ();
+ } else {
+ variable_src = get_src ( get_location () ); // needed to build initializer
+ variable = parse_primary_expression ();
+ variable_id = get_last_string ();
+ if (accept (TokenType.COLON)) {
+ variable_type = parse_type (true, true);
+ }
+ }
+
+ expect (TokenType.IN);
+
+ var before_int = get_location (); // int_start
+ if ( accept (TokenType.INTEGER_LITERAL) ) {
+ rollback (before_int);
+ int_start_expr = parse_primary_expression ();
+ int_start = int.parse (get_last_string());
+ int_amount += 1;
+ }
+ else {
+ int_start_expr = parse_primary_expression ();
+ }
+
+ var to_begins = get_location ();
+ var to_src = get_src (to_begins);
+ if (accept (TokenType.TO)) {
+ to_downto_dots = 1;
+ } else if (accept (TokenType.DOWNTO)) {
+ to_downto_dots = -1;
+ } else {
+ expect (TokenType.ELLIPSIS);
+ to_downto_dots = 0;
+ }
+
+ before_int = get_location (); // int_end
+ if ( accept (TokenType.INTEGER_LITERAL) ) {
+ rollback (before_int);
+ int_end_expr = parse_primary_expression ();
+ int_end = int.parse (get_last_string());
+ int_amount += 1;
+ } else {
+ int_end_expr = parse_primary_expression ();
+ }
+
+ if (to_downto_dots == 1) {
+ condition = new BinaryExpression (BinaryOperator.LESS_THAN_OR_EQUAL, variable,
int_end_expr, to_src);
+ iterator = new PostfixExpression (variable, true, to_src);
+ } else if (to_downto_dots == -1) {
+ condition = new BinaryExpression (BinaryOperator.GREATER_THAN_OR_EQUAL, variable,
int_end_expr, to_src);
+ iterator = new PostfixExpression (variable, false, to_src);
+ } else { // to_downto_dots == 0
+ if (int_amount >= 2) { // static analysis attempt
+ if (int_start <= int_end) {
+ condition = new BinaryExpression (BinaryOperator.LESS_THAN_OR_EQUAL,
variable, int_end_expr, to_src);
+ iterator = new PostfixExpression (variable, true, to_src);
+ } else {
+ condition = new BinaryExpression
(BinaryOperator.GREATER_THAN_OR_EQUAL, variable, int_end_expr, to_src);
+ iterator = new PostfixExpression (variable, false, to_src);
+ }
+ } else { // dynamic analysis
+ var first_lesser_second = new BinaryExpression
(BinaryOperator.LESS_THAN_OR_EQUAL, int_start_expr, int_end_expr, to_src);
+
+ var condition_if_increasing = new BinaryExpression
(BinaryOperator.LESS_THAN_OR_EQUAL, variable, int_end_expr, to_src);
+ var condition_if_decreasing = new BinaryExpression
(BinaryOperator.GREATER_THAN_OR_EQUAL, variable, int_end_expr, to_src);
+ condition = new ConditionalExpression (first_lesser_second,
condition_if_increasing, condition_if_decreasing, to_src);
+
+ var iterator_if_increasing = new PostfixExpression (variable, true, to_src);
+ var iterator_if_decreasing = new PostfixExpression (variable, false, to_src);
+ iterator = new ConditionalExpression (first_lesser_second,
iterator_if_increasing, iterator_if_decreasing, to_src);
+ }
+ }
+
+ initializer = new Assignment (variable, int_start_expr, AssignmentOperator.SIMPLE,
variable_src);
+ var initializer_2 = new MemberInitializer(variable_id, initializer); // hack: this instead
of "initializer" corrected error
+ var variable_class = new LocalVariable (variable_type.copy(), variable_id, initializer_2 as
Expression, get_src (begin) );
+ block.add_statement (new DeclarationStatement (variable_class,
variable_class.source_reference));
+
+ if (!accept (TokenType.EOL)) {
+ expect (TokenType.DO);
+ }
+
+ var src = get_src (begin);
+ var body = parse_embedded_statement ();
+ var statement = new ForStatement (condition, body, src);
+ statement.add_initializer (initializer);
+ statement.add_iterator (iterator);
+ block.add_statement (statement);
+ return block;
+ }
+
Statement parse_break_statement () throws ParseError {
var begin = get_location ();
expect (TokenType.BREAK);
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