Initial data commit

Task/Conditional-structures/Langur/conditional-structures-1.langur

@@ -0,0 +1,9 @@
+if .x == 0 {
+    ...
+} else if .x > 0 {
+    val .y = 100
+    ...
+} else {
+    val .y = 70
+    ...
+}

Task/Conditional-structures/Langur/conditional-structures-2.langur

@@ -0,0 +1 @@
+if(.x > .y: ...; .x < .y: ...; /* else */ ...)

Task/Conditional-structures/Langur/conditional-structures-3.langur

@@ -0,0 +1 @@
+if .x > .y: break

Task/Conditional-structures/Langur/conditional-structures-4.langur

@@ -0,0 +1,25 @@
+switch .x, .y, .z {
+    case true: ...
+        # any are true
+    case false, _: ...
+        # .x == false
+    case _, null, true: ...
+        # .y == null or .z == true
+    case xor _, true, true: ...
+        # .y == true xor .z == true
+}
+
+switch 0 {
+    case .x, .y: ...
+        # .x or .y equals 0
+    ...
+}
+
+given .x, .y, .z {
+    case true: ...
+        # all are true
+    case false, _: ...
+        # .x == false
+    case _, null, true: ...
+        # .y == null and .z == true
+}

Task/Conditional-structures/Langur/conditional-structures-5.langur

@@ -0,0 +1,7 @@
+given .x {
+    case true:
+        # implicit fallthrough
+    case null: 0
+        # no fallthrough
+    default: 1
+}

Task/Conditional-structures/Langur/conditional-structures-6.langur

@@ -0,0 +1,9 @@
+given .x {
+    case true:
+        if .y > 100 {
+            fallthrough
+        } else {
+            120
+        }
+    case false: ...
+}

Task/Conditional-structures/Langur/conditional-structures-7.langur

@@ -0,0 +1,4 @@
+given(.x, .y, .z;
+    true: ... ;     # all are equal to true
+    _, >= .z: ...;  # .y >= .z
+    ... )           # default