Initial Dever 0.0.1

test/rust/fixtures/core.dever

@@ -0,0 +1,74 @@
+type Row {
+  name: Text
+  count: Int
+}
+
+sign(value: Int < 0) (answer: Int) pure {
+  answer = -1
+}
+sign(value: 0) (answer: Int) pure {
+  answer = 0
+}
+sign(value: Int > 0) (answer: Int) pure {
+  answer = 1
+}
+
+main() (answer: Int) {
+  answer = sum([10, 20, 11]) + sign(3)
+}
+
+copyCheck() (answer: Bool) {
+  original = Row { name = "初始"
+    count = 1 }
+  changed = original
+  changed.name = "修改"
+  answer = original.name == "初始" and changed.name == "修改"
+}
+
+join(first: Text, second: Text) (answer: Text) pure {
+  answer = first + second
+}
+
+textCheck() (answer: Text) {
+  value = "雪"
+  joined = join(value, value)
+  answer = joined + value
+}
+
+increment(value: Int) (answer: Int) pure {
+  answer = value + 1
+}
+
+overflowCheck() (answer: Int) {
+  answer = increment(9223372036854775807)
+}
+
+change(value: Row) (answer: Row) {
+  value.name = value.name + "新"
+  answer = value
+}
+
+pair(value: Int) (count: Int, name: Text) pure {
+  count = value
+  name = "雪"
+}
+
+total(values: List<Int>) (answer: Int) pure {
+  answer = sum(values)
+}
+
+verify() (answer: Bool) {
+  original = Row { name = "雪"
+    count = 1 }
+  changed = change(original)
+  values = [1, 2, 3]
+  result = pair(42)
+  decimal = 1 / 8
+  floating = 1.5e0 + 2.0e0
+  skipped = false and overflowCheck() > 0
+  answer = main() == 42 and copyCheck() and textCheck() == "雪雪雪" and original.name == "雪" and changed.name == "雪新" and total(values) == 6 and sum(values) == 6 and result.count == 42 and result.name == "雪" and decimal == 0.125 and floating == 3.5e0 and not skipped and length("雪山") == 2 and sign(-3) == -1 and sign(0) == 0
+}
+
+arithmetic(value: Int) (answer: Int) pure {
+  answer = (value * 3 + 7) // 2
+}