Introduce Variable: Support extraction of string template fragments

#KT-2089 Fixed

idea/testData/refactoring/introduceVariable/stringTemplates/brokenEntryWithBlockExpr.kt

@@ -0,0 +1,3 @@
+fun foo(param: Int): String {
+    return "<selection>abc${pa</selection>ram}def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/brokenEntryWithBlockExpr.kt.conflicts

@@ -0,0 +1 @@
+Cannot find an expression to introduce

idea/testData/refactoring/introduceVariable/stringTemplates/brokenEntryWithExpr.kt

@@ -0,0 +1,3 @@
+fun foo(param: Int): String {
+    return "<selection>abc$pa</selection>ram"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/brokenEntryWithExpr.kt.conflicts

@@ -0,0 +1 @@
+Cannot find an expression to introduce

idea/testData/refactoring/introduceVariable/stringTemplates/brokenEscapeEntry.kt

@@ -0,0 +1,3 @@
+fun foo(a: Int): String {
+    return "<selection>abc$a\</selection>ndef"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/brokenEscapeEntry.kt.conflicts

@@ -0,0 +1 @@
+Cannot find an expression to introduce

idea/testData/refactoring/introduceVariable/stringTemplates/extractFalse.kt

@@ -0,0 +1,6 @@
+fun foo(param: Int): String {
+    val x = "xyfalsez"
+    val y = "xyFalsez"
+    val z = false
+    return "ab<selection>false</selection>def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/extractFalse.kt.after

@@ -0,0 +1,7 @@
+fun foo(param: Int): String {
+    val b = false
+    val x = "xy${b}z"
+    val y = "xyFalsez"
+    val z = false
+    return "ab${b}def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/extractIntegerLiteral.kt

@@ -0,0 +1,7 @@
+fun foo(param: Int): String {
+    val x = "a1234_"
+    val y = "-4123a"
+    val z = "+1243a"
+    val u = 123
+    return "ab<selection>123</selection>def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/extractIntegerLiteral.kt.after

@@ -0,0 +1,8 @@
+fun foo(param: Int): String {
+    val i = 123
+    val x = "a${i}4_"
+    val y = "-4${i}a"
+    val z = "+1243a"
+    val u = 123
+    return "ab${i}def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/extractTrue.kt

@@ -0,0 +1,6 @@
+fun foo(param: Int): String {
+    val x = "atrue123"
+    val x = "aTRUE123"
+    val z = true
+    return "ab<selection>true</selection>def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/extractTrue.kt.after

@@ -0,0 +1,7 @@
+fun foo(param: Int): String {
+    val b = true
+    val x = "a${b}123"
+    val x = "aTRUE123"
+    val z = true
+    return "ab${b}def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/fullContent.kt

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val x = "abc$a"
+    val y = "abc${a}"
+    val z = "abc{$a}def"
+    return "<selection>abc$a</selection>" + "def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/fullContent.kt.after

@@ -0,0 +1,7 @@
+fun foo(a: Int): String {
+    val s = "abc$a"
+    val x = s
+    val y = s
+    val z = "abc{$a}def"
+    return s + "def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/fullEntryWithBlockExpr.kt

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val x = "-${a + 1}"
+    val y = "x${a + 1}y"
+    val z = "x${a - 1}y"
+    return "abc<selection>${a + 1}</selection>def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/fullEntryWithBlockExpr.kt.after

@@ -0,0 +1,7 @@
+fun foo(a: Int): String {
+    val i = a + 1
+    val x = "-$i"
+    val y = "x${i}y"
+    val z = "x${a - 1}y"
+    return "abc${i}def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/fullEntryWithSimpleName.kt

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val x = "-$a"
+    val y = "x${a}y"
+    val z = "x$ay"
+    return "abc<selection>${a}</selection>def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/fullEntryWithSimpleName.kt.after

@@ -0,0 +1,7 @@
+fun foo(a: Int): String {
+    val a1 = a
+    val x = "-$a1"
+    val y = "x${a1}y"
+    val z = "x$ay"
+    return "abc${a1}def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/multipleEntriesWithPrefix.kt

@@ -0,0 +1,5 @@
+fun foo(a: Int): String {
+    val x = "+cd$a:${a + 1}efg"
+    val y = "+cd$a${a + 1}efg"
+    return "ab<selection>cd$a:${a + 1}ef</selection>"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/multipleEntriesWithPrefix.kt.after

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val s = "cd$a:${a + 1}ef"
+    val x = "+${s}g"
+    val y = "+cd$a${a + 1}efg"
+    return "ab$s"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/multipleEntriesWithSubstring.kt

@@ -0,0 +1,5 @@
+fun foo(a: Int): String {
+    val x = "_c$a:${a + 1}d_"
+    val y = "_$a:${a + 1}d_"
+    return "ab<selection>c$a:${a + 1}d</selection>ef"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/multipleEntriesWithSubstring.kt.after

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val s = "c$a:${a + 1}d"
+    val x = "_${s}_"
+    val y = "_$a:${a + 1}d_"
+    return "ab${s}ef"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/multipleEntriesWithSuffix.kt

@@ -0,0 +1,5 @@
+fun foo(a: Int): String {
+    val x = "_ab$a:${a + 1}cd__"
+    val y = "_a$a:${a + 1}cd__"
+    return "<selection>ab$a:${a + 1}cd</selection>ef"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/multipleEntriesWithSuffix.kt.after

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val s = "ab$a:${a + 1}cd"
+    val x = "_${s}__"
+    val y = "_a$a:${a + 1}cd__"
+    return "${s}ef"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/rawTemplateWithSubstring.kt

@@ -0,0 +1,9 @@
+fun foo(a: Int): String {
+    val x = """_c$a
+    :${a + 1}d_"""
+    val y = "_$a:${a + 1}d_"
+    val z = """_c$a:${a + 1}d_"""
+    val u = "_c$a\n:${a + 1}d_"
+    return """ab<selection>c$a
+    :${a + 1}d</selection>ef"""
+}

idea/testData/refactoring/introduceVariable/stringTemplates/rawTemplateWithSubstring.kt.after

@@ -0,0 +1,9 @@
+fun foo(a: Int): String {
+    val s = """c$a
+    :${a + 1}d"""
+    val x = """_${s}_"""
+    val y = "_$a:${a + 1}d_"
+    val z = """_c$a:${a + 1}d_"""
+    val u = "_c$a\n:${a + 1}d_"
+    return """ab${s}ef"""
+}

idea/testData/refactoring/introduceVariable/stringTemplates/singleEntryPrefix.kt

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val x = "xabc$a"
+    val y = "${a}abcx"
+    val z = "xacb$a"
+    return "<selection>abc</selection>def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/singleEntryPrefix.kt.after

@@ -0,0 +1,7 @@
+fun foo(a: Int): String {
+    val s = "abc"
+    val x = "x$s$a"
+    val y = "${a}${s}x"
+    val z = "xacb$a"
+    return "${s}def"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/singleEntrySubstring.kt

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val x = "xcd$a"
+    val y = "${a}cdx"
+    val z = "xcf$a"
+    return "ab<selection>cd</selection>ef"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/singleEntrySubstring.kt.after

@@ -0,0 +1,7 @@
+fun foo(a: Int): String {
+    val s = "cd"
+    val x = "x$s$a"
+    val y = "${a}${s}x"
+    val z = "xcf$a"
+    return "ab${s}ef"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/singleEntrySuffix.kt

@@ -0,0 +1,6 @@
+fun foo(a: Int): String {
+    val x = "xdef$a"
+    val y = "${a}defx"
+    val z = "xddf$a"
+    return "abc<selection>def</selection>"
+}

idea/testData/refactoring/introduceVariable/stringTemplates/singleEntrySuffix.kt.after

@@ -0,0 +1,7 @@
+fun foo(a: Int): String {
+    val s = "def"
+    val x = "x$s$a"
+    val y = "${a}${s}x"
+    val z = "xddf$a"
+    return "abc$s"
+}