From e14eb17aa665f6e4800e025de7ddf5ee0f24f90b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bart=C5=82omiej=20Przemys=C5=82aw=20Pluta?=
 <noreply.git@mx.bartlomiejpluta.com>
Date: Sat, 7 Mar 2020 21:37:13 +0100
Subject: [PATCH] Migrate matchers to Kotlin

---
 .../kotlin/io/smnp/data/signature/Matcher.kt  | 106 ++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 src/main/kotlin/io/smnp/data/signature/Matcher.kt

diff --git a/src/main/kotlin/io/smnp/data/signature/Matcher.kt b/src/main/kotlin/io/smnp/data/signature/Matcher.kt
new file mode 100644
index 0000000..3e7a491
--- /dev/null
+++ b/src/main/kotlin/io/smnp/data/signature/Matcher.kt
@@ -0,0 +1,106 @@
+package io.smnp.data.signature
+
+import io.smnp.data.enumeration.DataType
+import io.smnp.data.model.Value
+
+class Matcher(val type: DataType?, val matcher: (Value) -> Boolean, val string: String) {
+
+    fun match(value: Value): Boolean =
+        (type != null && type == value.type && matcher(value)) || (type == null) && matcher(value)
+
+    infix fun and(matcher: Matcher): Matcher {
+        if (type != matcher.type) {
+            throw RuntimeException("Matchers' supported type are different to each other: $type != ${matcher.type}")
+        }
+
+        val string = "[${this.string} and ${matcher.string}]"
+        return Matcher(type, { this.match(it) && matcher.match(it) }, string)
+    }
+
+    infix fun or(matcher: Matcher): Matcher {
+        if (type != matcher.type) {
+            throw RuntimeException("Matchers' supported type are different to each other: $type != ${matcher.type}")
+        }
+
+        val string = "[${this.string} and ${matcher.string}]"
+        return Matcher(type, { this.match(it) || matcher.match(it) }, string)
+    }
+
+    override fun equals(other: Any?) = toString() == other.toString()
+
+    override fun toString() = string
+
+    companion object {
+        fun mapOfMatchers(keyMatchers: List<Matcher>, valueMatchers: List<Matcher>): Matcher {
+            return Matcher(
+                DataType.MAP,
+                {
+                    (it.value!! as Map<Value, Value>).entries.all { (k, v) ->
+                        keyMatchers.any { m -> m.match(k) } && valueMatchers.any { m ->
+                            m.match(
+                                v
+                            )
+                        }
+                    }
+                },
+                "map<${keyMatchers.joinToString(", ") { it.toString() }}><${valueMatchers.joinToString(", ") { it.toString() }}>"
+            )
+        }
+
+        fun recursiveListMatcher(matcher: Matcher): Matcher {
+            if (matcher.type == DataType.LIST) {
+                throw RuntimeException("Passed matcher will be handling non-list types, so it cannot have supported type of ${DataType.LIST}")
+            }
+
+            fun match(value: Value): Boolean {
+                if (value.type != DataType.LIST) {
+                    return matcher.match(value)
+                }
+
+                return (value.value!! as List<Value>).all { match(it) }
+            }
+
+            return Matcher(
+                DataType.LIST,
+                { match(it) },
+                "[LIST OF $matcher]"
+            )
+        }
+
+        fun listOfMatchers(vararg matchers: Matcher): Matcher {
+            return Matcher(
+                DataType.LIST,
+                { list -> (list.value as List<Value>).all { item -> matchers.any { it.match(item) } } },
+                "list<${matchers.joinToString(", ") { it.toString() }}>"
+            )
+        }
+
+        fun listOf(vararg types: DataType): Matcher {
+            return Matcher(
+                DataType.LIST,
+                { list -> (list.value as List<Value>).all { it.type in types } },
+                "list<${types.joinToString(", ") { it.name.toLowerCase() }}>"
+            )
+        }
+
+        fun allTypes(): Matcher {
+            return Matcher(null, { it.type != DataType.VOID }, "any")
+        }
+
+        fun ofTypes(vararg types: DataType): Matcher {
+            return Matcher(null, { it.type in types }, "<${types.joinToString(", ") { it.name.toLowerCase() }}>")
+        }
+
+        fun ofType(type: DataType): Matcher {
+            return Matcher(null, { it.type == type }, type.name.toLowerCase())
+        }
+
+        fun oneOf(vararg matchers: Matcher): Matcher {
+            return Matcher(
+                null,
+                { value -> matchers.any { matcher -> matcher.match(value) } },
+                "<${matchers.joinToString(", ") { it.toString() }}>"
+            )
+        }
+    }
+}
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