Rockingcool/kleingrep
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added fields to denote all the characters that an 'allChars' postfixNode _shouldn't_ represent (useful for inverting character classes)

Browse Source
This commit is contained in:
Aadhavan Srinivasan
2024-11-20 09:41:32 -05:00
parent b3ee1fe5e8
commit e882f41400
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
postfixNode.go
View File

@@ -26,7 +26,8 @@ type postfixNode struct {
contents []rune // Contents of the node - the length of this would only be >1 if the node represents a character class contents []rune // Contents of the node - the length of this would only be >1 if the node represents a character class
startReps int // Minimum number of times the node should be repeated - used with numeric specifiers startReps int // Minimum number of times the node should be repeated - used with numeric specifiers
endReps int // Maximum number of times the node should be repeated - used with numeric specifiers endReps int // Maximum number of times the node should be repeated - used with numeric specifiers
isDot bool // Whether or not the current node represents a 'dot' metacharacter allChars bool // Whether or not the current node represents all characters (eg. dot metacharacter)
except []rune // For inverted character classes, we match every unicode character _except_ a few. In this case, allChars is true and the exceptions are placed here.
} }
// Creates a new escaped node - the given character is assumed to have been preceded by a backslash // Creates a new escaped node - the given character is assumed to have been preceded by a backslash
@@ -115,7 +116,7 @@ func newPostfixDotNode() postfixNode {
toReturn.startReps = 1 toReturn.startReps = 1
toReturn.endReps = 1 toReturn.endReps = 1
toReturn.nodetype = CHARACTER toReturn.nodetype = CHARACTER
toReturn.isDot = true toReturn.allChars = true
toReturn.contents = []rune{ANY_CHAR} toReturn.contents = []rune{ANY_CHAR}
return toReturn return toReturn
} }