belka/elna
1
0
Fork 0
Code Issues 5 Pull Requests Releases Activity

Provide record initialization syntax

Browse Source
This commit is contained in:
Eugen Wissner
2025-02-13 22:54:47 +01:00
parent 62d9398772
commit c564847c6b
7 changed files with 115 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

116
source.elna
View File

@ -1,68 +1,113 @@
const
SEEK_SET* = 0; SEEK_CUR* = 1; SEEK_END* = 2;
SEEK_SET* = 0
SEEK_CUR* = 1
SEEK_END* = 2
TOKEN_IDENTIFIER* = 1; TOKEN_IF* = 2; TOKEN_THEN* = 3; TOKEN_ELSE* = 4; TOKEN_ELSIF* = 5;
TOKEN_WHILE* = 6; TOKEN_DO* = 7; TOKEN_PROC* = 8; TOKEN_BEGIN* = 9; TOKEN_END* = 10;
TOKEN_EXTERN* = 11; TOKEN_CONST* = 12; TOKEN_VAR* = 13; TOKEN_ARRAY* = 14; TOKEN_OF* = 15;
TOKEN_TYPE* = 16; TOKEN_RECORD* = 17; TOKEN_UNION* = 18; TOKEN_POINTER* = 19; TOKEN_TO* = 20;
TOKEN_BOOLEAN* = 21; TOKEN_NIL* = 22; TOKEN_AND* = 23; TOKEN_OR* = 24; TOKEN_NOT* = 25;
TOKEN_RETURN* = 26; TOKEN_CAST* = 27; TOKEN_AS* = 28; TOKEN_SIZEOF* = 29;
TOKEN_LEFT_PAREN* = 30; TOKEN_RIGHT_PAREN* = 31; TOKEN_LEFT_SQUARE* = 32;
TOKEN_RIGHT_SQUARE* = 33; TOKEN_GREATER_EQUAL* = 34; TOKEN_LESS_EQUAL* = 35;
TOKEN_GREATER_THAN* = 36; TOKEN_LESS_THAN* = 37; TOKEN_NOT_EQUAL* = 38; TOKEN_EQUAL* = 39;
TOKEN_SEMICOLON* = 40; TOKEN_DOT* = 41; TOKEN_COMMA* = 42;
TOKEN_PLUS* = 43; TOKEN_MINUS* = 44; TOKEN_MULTIPLICATION* = 45; TOKEN_DIVISION* = 46;
TOKEN_REMAINDER* = 47; TOKEN_ASSIGNMENT* = 48; TOKEN_COLON* = 49; TOKEN_HAT* = 50;
TOKEN_AT* = 51; TOKEN_COMMENT* = 52; TOKEN_INTEGER* = 53; TOKEN_WORD* = 54;
TOKEN_CHARACTER* = 55; TOKEN_STRING* = 56; TOKEN_DEFER* = 57;
TOKEN_IDENTIFIER* = 1
TOKEN_IF* = 2
TOKEN_THEN* = 3
TOKEN_ELSE* = 4
TOKEN_ELSIF* = 5
TOKEN_WHILE* = 6
TOKEN_DO* = 7
TOKEN_PROC* = 8
TOKEN_BEGIN* = 9
TOKEN_END* = 10
TOKEN_EXTERN* = 11
TOKEN_CONST* = 12
TOKEN_VAR* = 13
TOKEN_ARRAY* = 14
TOKEN_OF* = 15
TOKEN_TYPE* = 16
TOKEN_RECORD* = 17
TOKEN_UNION* = 18
TOKEN_POINTER* = 19
TOKEN_TO* = 20
TOKEN_BOOLEAN* = 21
TOKEN_NIL* = 22
TOKEN_AND* = 23
TOKEN_OR* = 24
TOKEN_NOT* = 25
TOKEN_RETURN* = 26
TOKEN_CAST* = 27
TOKEN_AS* = 28
TOKEN_SIZEOF* = 29
TOKEN_LEFT_PAREN* = 30
TOKEN_RIGHT_PAREN* = 31
TOKEN_LEFT_SQUARE* = 32
TOKEN_RIGHT_SQUARE* = 33
TOKEN_GREATER_EQUAL* = 34
TOKEN_LESS_EQUAL* = 35
TOKEN_GREATER_THAN* = 36
TOKEN_LESS_THAN* = 37
TOKEN_NOT_EQUAL* = 38
TOKEN_EQUAL* = 39
TOKEN_SEMICOLON* = 40
TOKEN_DOT* = 41
TOKEN_COMMA* = 42
TOKEN_PLUS* = 43
TOKEN_MINUS* = 44
TOKEN_MULTIPLICATION* = 45
TOKEN_DIVISION* = 46
TOKEN_REMAINDER* = 47
TOKEN_ASSIGNMENT* = 48
TOKEN_COLON* = 49
TOKEN_HAT* = 50
TOKEN_AT* = 51
TOKEN_COMMENT* = 52
TOKEN_INTEGER* = 53
TOKEN_WORD* = 54
TOKEN_CHARACTER* = 55
TOKEN_STRING* = 56
TOKEN_DEFER* = 57
type
Position* = record
line: Word;
column: Word
end,
end
Location* = record
first: Position;
last: Position
end,
end
SourceCode = record
position: Position;
text: String
end,
end
TokenValue* = union
int_value: Int;
string_value: pointer to Char;
string: String;
boolean_value: Bool;
char_value: Char
end,
end
Token* = record
kind: Int;
value: TokenValue;
location: Location
end,
end
FILE* = record
dummy: Int
end,
end
CommandLine* = record
input: pointer to Char;
tokenize: Bool;
syntax_tree: Bool
end,
end
Literal* = record
value: Int
end,
end
ConstantDefinition* = record
name: pointer to Char;
body: pointer to Literal
end,
end
ConstantPart* = record
elements: pointer to pointer to ConstantDefinition;
count: Word
end,
end
Program* = record
constants: ConstantPart
end;
end
(*
External procedures.
@ -173,18 +218,14 @@ begin
return c = ' ' or c = '\n' or c = '\t'
end
proc open_substring(string: String, start: Word) -> String;
begin
string.ptr := string.ptr + start;
string.length := string.length - start;
return string
end
proc substring(string: String, start: Word, count: Word) -> String;
begin
string.ptr := string.ptr + start;
string.length := count;
return string
return String(string.ptr + start, count)
end
proc open_substring(string: String, start: Word) -> String;
begin
return substring(string, start, string.length - start)
end
proc string_dup(origin: String) -> String;
@ -193,9 +234,8 @@ var
begin
copy := cast(malloc(origin.length) as pointer to Char);
strncpy(copy, origin.ptr, origin.length);
origin.ptr := copy;
return origin
return String(copy, origin.length)
end
(*