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touched evaluator code

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hyung-hwan 2014-02-11 09:35:44 +00:00
parent cbf8d0e54e
commit 9a426594a3
4 changed files with 477 additions and 383 deletions
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850
lib/h2-scheme-execute-evaluate.adb
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4
lib/h2-scheme-execute.adb
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@ -80,7 +80,7 @@ procedure Execute (Interp: in out Interpreter_Record) is
if Is_Cons(O) then
Reload_Frame (Interp, Opcode_Grouped_Call, O);
else
Pop_Frame (Interp);
Pop_Frame (Interp); -- no <expression> to evaluate
end if;
else
O := Get_Cdr(O); -- next <clause> list
@ -96,7 +96,7 @@ procedure Execute (Interp: in out Interpreter_Record) is
if Is_Cons(O) then
Reload_Frame (Interp, Opcode_Grouped_Call, O);
else
Pop_Frame (Interp);
Pop_Frame (Interp); -- no <expression> to evaluate
end if;
else
Switch_Frame (Interp.Stack, Opcode_Evaluate_Object, Get_Car(R), Nil_Pointer);

1
lib/h2-scheme.adb
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@ -1863,6 +1863,7 @@ end if;
Interp.Self := Aliased_Interp'Unchecked_Access;
end;
Interp.State := 0;
Interp.Storage_Pool := Storage_Pool;
Interp.Symbol_Table := Nil_Pointer;

5
lib/h2-scheme.ads
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@ -163,6 +163,7 @@ package H2.Scheme is
-- represents the value that can be stored in this field.
type Object_Flags is mod 2 ** 4;
Syntax_Object: constant Object_Flags := Object_Flags'(2#0001#);
Syntax_Checked: constant Object_Flags := Object_Flags'(2#0010#);
type Syntax_Code is (
And_Syntax,
@ -503,9 +504,13 @@ private
Data: Top_Array(1 .. 100) := (others => null);
end record;
type Interpreter_State is mod 2 ** 4;
Force_Syntax_Check: constant Interpreter_State := Interpreter_State'(2#0001#);
--type Interpreter_Record is tagged limited record
type Interpreter_Record is limited record
Self: Interpreter_Pointer := Interpreter_Record'Unchecked_Access; -- Current instance's pointer
State: Interpreter_State := 0; -- Internal housekeeping state
Storage_Pool: Storage_Pool_Pointer := null;
Trait: Option_Record(Trait_Option);