Added few checks and more tests

Author: fan87

src/main/kotlin/me/fan87/regbex/Regbex.kt

@@ -460,10 +460,20 @@ class Regbex {
             if (it is IntInsnNode) {
                 return@thenCustomCheck it.operand == number
             }
+            if (it is LdcInsnNode) {
+                return@thenCustomCheck it.cst == number
+            }
             return@thenCustomCheck false
         }
     }
 
+    /**
+     * Expect a Ldc node with value [any]
+     */
+    fun thenLdc(any: Any) {
+        thenCustomCheck { it is LdcInsnNode && it == any }
+    }
+
 
 }
 

src/test/kotlin/GreedyTest.kt

@@ -57,4 +57,42 @@ class GreedyTest {
         assertTrue(matcher.next(0))
     }
 
+    @Test
+    internal fun greedyTestC() {
+        val instructions = InsnList().apply {
+            add(LdcInsnNode("A"))
+            add(LdcInsnNode("B"))
+            add(LdcInsnNode("C"))
+        }
+
+        val matcher = RegbexPattern {
+            thenLdcString()
+            thenOptional {
+                thenLdcStringEqual("B")
+            }
+            thenLdcString()
+        }.matcher(instructions)
+
+        assertTrue(matcher.next(0))
+    }
+
+    @Test
+    internal fun greedyTestD() {
+        val instructions = InsnList().apply {
+            add(LdcInsnNode("A"))
+            add(LdcInsnNode("B"))
+            add(LdcInsnNode("C"))
+        }
+
+        val matcher = RegbexPattern {
+            thenLdcString()
+            thenOptional {
+                thenLdcStringEqual("C")
+            }
+            thenLdcString()
+        }.matcher(instructions)
+
+        assertTrue(matcher.next(0))
+    }
+
 }