Update to Version 8.4.2 | Read HISTORY.md

https://github.com/kataras/iris/blob/master/HISTORY.md#fr-15-september-2017--v842

Former-commit-id: 0ee4cc1d93ef7f26e5d402fdfbe07062aff5b08c

mvc/activator/methodfunc/func_lexer.go

@@ -0,0 +1,89 @@
+package methodfunc
+
+import (
+	"unicode"
+)
+
+const (
+	tokenBy       = "By"
+	tokenWildcard = "Wildcard" // should be followed by "By",
+)
+
+// word lexer, not characters.
+type lexer struct {
+	words []string
+	cur   int
+}
+
+func newLexer(s string) *lexer {
+	l := new(lexer)
+	l.reset(s)
+	return l
+}
+
+func (l *lexer) reset(trailing string) {
+	l.cur = -1
+	var words []string
+	if trailing != "" {
+		end := len(trailing)
+		start := -1
+
+		for i, n := 0, end; i < n; i++ {
+			c := rune(trailing[i])
+			if unicode.IsUpper(c) {
+				// it doesn't count the last uppercase
+				if start != -1 {
+					end = i
+					words = append(words, trailing[start:end])
+				}
+				start = i
+				continue
+			}
+			end = i + 1
+		}
+
+		if end > 0 && len(trailing) >= end {
+			words = append(words, trailing[start:end])
+		}
+	}
+
+	l.words = words
+}
+
+func (l *lexer) next() (w string) {
+	cur := l.cur + 1
+
+	if w = l.peek(cur); w != "" {
+		l.cur++
+	}
+
+	return
+}
+
+func (l *lexer) skip() {
+	if cur := l.cur + 1; cur < len(l.words) {
+		l.cur = cur
+	} else {
+		l.cur = len(l.words) - 1
+	}
+}
+
+func (l *lexer) peek(idx int) string {
+	if idx < len(l.words) {
+		return l.words[idx]
+	}
+	return ""
+}
+
+func (l *lexer) peekNext() (w string) {
+	return l.peek(l.cur + 1)
+}
+
+func (l *lexer) peekPrev() (w string) {
+	if l.cur > 0 {
+		cur := l.cur - 1
+		w = l.words[cur]
+	}
+
+	return w
+}