-
-
Notifications
You must be signed in to change notification settings - Fork 733
/
Copy pathutil.odin
83 lines (74 loc) · 3.54 KB
/
util.odin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
package regex_vm
/*
(c) Copyright 2024 Feoramund <[email protected]>.
Made available under Odin's BSD-3 license.
List of contributors:
Feoramund: Initial implementation.
*/
Opcode_Iterator :: struct {
code: Program,
pc: int,
}
iterate_opcodes :: proc(iter: ^Opcode_Iterator) -> (opcode: Opcode, pc: int, ok: bool) {
if iter.pc >= len(iter.code) {
return
}
opcode = iter.code[iter.pc]
pc = iter.pc
ok = true
switch opcode {
case .Match: iter.pc += size_of(Opcode)
case .Match_And_Exit: iter.pc += size_of(Opcode)
case .Byte: iter.pc += size_of(Opcode) + size_of(u8)
case .Rune: iter.pc += size_of(Opcode) + size_of(rune)
case .Rune_Class: iter.pc += size_of(Opcode) + size_of(u8)
case .Rune_Class_Negated: iter.pc += size_of(Opcode) + size_of(u8)
case .Wildcard: iter.pc += size_of(Opcode)
case .Jump: iter.pc += size_of(Opcode) + size_of(u16)
case .Split: iter.pc += size_of(Opcode) + 2 * size_of(u16)
case .Save: iter.pc += size_of(Opcode) + size_of(u8)
case .Assert_Start: iter.pc += size_of(Opcode)
case .Assert_End: iter.pc += size_of(Opcode)
case .Assert_Word_Boundary: iter.pc += size_of(Opcode)
case .Assert_Non_Word_Boundary: iter.pc += size_of(Opcode)
case .Multiline_Start_Open: iter.pc += size_of(Opcode)
case .Multiline_Start_Close: iter.pc += size_of(Opcode)
case .Wait_For_Byte: iter.pc += size_of(Opcode) + size_of(u8)
case .Wait_For_Rune: iter.pc += size_of(Opcode) + size_of(rune)
case .Wait_For_Rune_Class: iter.pc += size_of(Opcode) + size_of(u8)
case .Wait_For_Rune_Class_Negated: iter.pc += size_of(Opcode) + size_of(u8)
case .Match_All_And_Escape: iter.pc += size_of(Opcode)
case .Assert_Multiline_End: iter.pc += size_of(Opcode)
case:
panic("Invalid opcode found in RegEx program.")
}
return
}
opcode_to_name :: proc(opcode: Opcode) -> (str: string) {
switch opcode {
case .Match: str = "Match"
case .Match_And_Exit: str = "Match_And_Exit"
case .Byte: str = "Byte"
case .Rune: str = "Rune"
case .Rune_Class: str = "Rune_Class"
case .Rune_Class_Negated: str = "Rune_Class_Negated"
case .Wildcard: str = "Wildcard"
case .Jump: str = "Jump"
case .Split: str = "Split"
case .Save: str = "Save"
case .Assert_Start: str = "Assert_Start"
case .Assert_End: str = "Assert_End"
case .Assert_Word_Boundary: str = "Assert_Word_Boundary"
case .Assert_Non_Word_Boundary: str = "Assert_Non_Word_Boundary"
case .Multiline_Start_Open: str = "Multiline_Open"
case .Multiline_Start_Close: str = "Multiline_Close"
case .Wait_For_Byte: str = "Wait_For_Byte"
case .Wait_For_Rune: str = "Wait_For_Rune"
case .Wait_For_Rune_Class: str = "Wait_For_Rune_Class"
case .Wait_For_Rune_Class_Negated: str = "Wait_For_Rune_Class_Negated"
case .Match_All_And_Escape: str = "Match_All_And_Escape"
case .Assert_Multiline_End: str = "Assert_Multiline_End"
case: str = "<UNKNOWN>"
}
return
}