Initial project import

tools/v/vlib/regex/regex_complex_test.v

@@ -0,0 +1,54 @@
+import regex
+
+fn test_complex_matching001() {
+	tmp_text := r"@[export:'something']
+const (
+some_const   = [1114111, 127, 2047, 65535, 1114111]!
+
+)
+
+@[export:'something_empty']
+const (
+empty_const   = ()
+)
+"
+	query := r'\[export:\S+\]\sconst\s\(\s+\S+\s{3}=\s\('
+	mut re := regex.regex_opt(query) or { panic(err) }
+	mut a := re.find_all(tmp_text)
+	assert a == [88, 140]
+}
+
+fn test_complex_matching002() {
+	text := '<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="v_app_name">V0</string>
+    <!-- comment -->
+    <string name="v_lib_name">v1</string>
+    <string name="v_lib_name2">v2</string>
+</resources>
+'
+
+	mut re := regex.regex_opt(r'.*<resources>.+<string name="v_lib_name">([^<]+)') or { panic(err) }
+
+	start, end := re.match_string(text)
+	if start >= 0 && re.groups.len > 0 {
+		// check that we have obtained our 'v1' value
+		assert text#[re.groups[0]..re.groups[1]] == 'v1'
+		return
+	}
+	assert false
+}
+
+fn test_complex_matching003() {
+	text := 'abcdefgt1234abcd<tag name="mio_tag">value</tag>'
+
+	mut re := regex.regex_opt(r'\w*<tag\s*name\s*="mio_tag">([^<]+)') or { panic(err) }
+
+	start, end := re.match_string(text)
+	if start >= 0 && re.groups.len > 0 {
+		println('found ${text#[start..end]}')
+		println('group: ${text#[re.groups[0]..re.groups[1]]}')
+		return
+	}
+	assert false
+}