text stringlengths 0 234 |
|---|
if Current_Char /= What then |
raise Parsing_Error |
with "Expecting '" & What & "' got '" & Current_Char & "'"; |
else |
Next_Char; |
end if; |
end Expect; |
function Remaining return String is |
begin |
return Buffer (Cursor .. Buffer'Last); |
end Remaining; |
Level : Natural := 0; |
function Indent return String is |
use Ada.Strings.Fixed; |
begin |
return (Level * 3) * " "; |
end Indent; |
procedure Down_Level is |
begin |
Level := Level + 1; |
end Down_Level; |
procedure Up_Level is |
begin |
Level := Level - 1; |
end Up_Level; |
procedure Ecco (X : String) is |
begin |
if Verbose then |
Ada.Text_Io.Put_Line (Indent |
& "Calling " |
& X & "[" & Remaining & "]" |
& "'" & Current_Char & "'"); |
Down_Level; |
end if; |
end Ecco; |
procedure Fine is |
begin |
if Verbose then |
Up_Level; |
Ada.Text_Io.Put_Line (Indent & "done " & "[" & Remaining & "]" |
& "'" & Current_Char & "'"); |
end if; |
end Fine; |
procedure Advance (N : Positive) is |
begin |
Cursor := Cursor + N - 1; |
Next_Char; |
end Advance; |
function Parse_Expr return Node_Access; |
-- function Parse_Identifier return Bounded_ID is |
-- use Ada.Strings.Maps; |
-- use Bounded_IDs; |
-- |
-- Result : Bounded_ID; |
-- ID_Chars : constant Character_Set := |
-- To_Set (Character_Range'('a', 'z')) or |
-- To_Set (Character_Range'('A', 'Z')) or |
-- To_Set (Character_Range'('0', '9')) or |
-- To_Set ('.') or |
-- To_Set ('_'); |
-- begin |
-- Ecco ("ID"); |
-- |
-- while Is_In (Current_Char, ID_Chars) loop |
-- Result := Result & Current_Char; |
-- Next_Char (Skip_Spaces => False); |
-- end loop; |
-- |
-- if Current_Char = ' ' then |
-- Next_Char; |
-- end if; |
-- |
-- Fine; |
-- return Result; |
-- end Parse_Identifier; |
procedure Parse_Parameter_List (Parameters : out Parameter_Array; |
N_Params : out Natural) |
is |
begin |
Ecco ("par-list"); |
if Current_Char = ')' then |
N_Params := 0; |
else |
N_Params := 1; |
Parameters (1) := Parse_Expr; |
while Current_Char = ',' loop |
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