Added node types for left and right parentheses
This commit is contained in:
@@ -1,6 +1,8 @@
|
||||
package main
|
||||
|
||||
import "slices"
|
||||
import (
|
||||
"slices"
|
||||
)
|
||||
|
||||
type NodeType int
|
||||
|
||||
@@ -13,6 +15,8 @@ const (
|
||||
QUESTION
|
||||
PLUS
|
||||
ASSERTION
|
||||
LPAREN
|
||||
RPAREN
|
||||
)
|
||||
|
||||
var INFINITE_REPS int = -1 // Represents infinite reps eg. the end range in {5,}
|
||||
@@ -20,8 +24,8 @@ var INFINITE_REPS int = -1 // Represents infinite reps eg. the end range in {5,}
|
||||
type postfixNode struct {
|
||||
nodetype NodeType
|
||||
contents []rune // Contents of the node - the length of this would only be >1 if the node represents a character class
|
||||
startReps int // How many times the node should be repeated - used with numeric specifiers
|
||||
endReps int
|
||||
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
|
||||
}
|
||||
|
||||
// Creates a new escaped node - the given character is assumed to have been preceded by a backslash
|
||||
@@ -89,6 +93,10 @@ func newPostfixNode(contents ...rune) postfixNode {
|
||||
to_return.nodetype = CONCATENATE
|
||||
case '^', '$':
|
||||
to_return.nodetype = ASSERTION
|
||||
case '(':
|
||||
to_return.nodetype = LPAREN
|
||||
case ')':
|
||||
to_return.nodetype = RPAREN
|
||||
default:
|
||||
to_return.nodetype = CHARACTER
|
||||
}
|
||||
|
Reference in New Issue
Block a user