adding Parse_Data record definition

This commit is contained in:
hyung-hwan 2021-12-03 06:38:20 +00:00
parent 390d642ed5
commit e5157250fe
2 changed files with 37 additions and 4 deletions

View File

@ -185,16 +185,16 @@ package body H3.Compilers is
end Pop_Inclusion;
-- -------------------------------------------------------------------
procedure Parse_Ident (C: in out Compiler) is
begin
if C.Tk.Buf.Equals(LB_CLASS) then
null;
Push_Parse_State (C, PS_CLASS_1);
elsif C.Tk.Buf.Equals(LB_FUN) then
null;
Push_Parse_State (C, PS_FUN_1);
else
-- probably a command name or a variable name?
null;
Push_Parse_State (C, PS_PLAIN_STATEMENT_START);
end if;
end Parse_Ident;
@ -208,6 +208,11 @@ package body H3.Compilers is
null;
end Parse_Class_2;
-- -------------------------------------------------------------------
procedure Parse_Plain_Statement_Start (C: in out Compiler) is
begin
null;
end Parse_Plain_Statement_Start;
-- -------------------------------------------------------------------
procedure Parse_Start (C: in out Compiler) is
@ -292,10 +297,15 @@ package body H3.Compilers is
case C.Prs.States(C.Prs.Top).Current is
when PS_START =>
Parse_Start (C);
when PS_INCLUDE_TARGET =>
Parse_Include_Target (C);
when PS_INCLUDE_TERMINATOR =>
Parse_Include_Terminator (C);
when PS_PLAIN_STATEMENT_START =>
Parse_Plain_Statement_Start (C);
when others =>
raise Syntax_Error with "unknown parser state"; -- TODO: change this...
end case;

View File

@ -94,11 +94,34 @@ private
PS_INCLUDE_TERMINATOR,
PS_CLASS_1,
PS_CLASS_2
PS_CLASS_2,
PS_FUN_1,
PS_FUN_2,
PS_PLAIN_STATEMENT_START
);
type Parse_Data_Code is (
PD_VOID,
PD_STATEMENT,
PD_ASSIGNMENT
);
type Parse_Data(Code: Parse_Data_Code := PD_VOID) is record
case Code is
when PD_VOID =>
null;
when PD_STATEMENT =>
Cmd_Name: S.Elastic_String;
when PD_ASSIGNMENT =>
Var_Name: S.Elastic_String;
end case;
end record;
type Parse_State is record
Current: Parse_State_Code := PS_START;
Data: Parse_Data;
end record;
type Parse_State_Array is array(System_Index range<>) of Parse_State;