Refactor a bit

2015-08-03 21:03:30 +03:00
parent d76e177834
commit 7b206fdaf4
5 changed files with 119 additions and 85 deletions
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.preprocessor
+
+import com.intellij.openapi.util.TextRange
+import com.intellij.openapi.util.text.StringUtil
+import org.jetbrains.kotlin.psi.*
+
+data class Modification(val range: TextRange, val apply: (String) -> String)
+
+class CollectModificationsVisitor(evaluators: List<Evaluator>) : JetTreeVisitorVoid() {
+
+    val elementModifications: Map<Evaluator, MutableList<Modification>> =
+            evaluators.toMap(selector = { it }, transform = { arrayListOf<Modification>() })
+
+    override fun visitDeclaration(declaration: JetDeclaration) {
+        super.visitDeclaration(declaration)
+
+        val annotations = declaration.parseConditionalAnnotations()
+        val name = (declaration as? JetNamedDeclaration)?.nameAsSafeName ?: declaration.name
+
+        val declResults = arrayListOf<Pair<Evaluator, Boolean>>()
+        for ((evaluator, modifications) in elementModifications) {
+            val conditionalResult = evaluator(annotations)
+            declResults.add(evaluator to conditionalResult)
+
+            if (!conditionalResult)
+                modifications.add(Modification(declaration.textRange) { rangeText ->
+                    StringBuilder {
+                        append("/* Not available on $evaluator */")
+                        repeat(StringUtil.getLineBreakCount(rangeText)) { append("\n") }
+                    }.toString()
+                })
+            else {
+                val targetName = annotations.filterIsInstance<Conditional.TargetName>().singleOrNull()
+                if (targetName != null) {
+                    val placeholderName = (declaration as JetNamedDeclaration).nameAsName!!.asString()
+                    val realName = targetName.name
+                    modifications.add(Modification(declaration.textRange) { it.replace(placeholderName, realName) })
+                }
+            }
+
+        }
+        //println("declaration: ${declaration.javaClass.simpleName} $name${if (annotations.isNotEmpty()) ", annotations: ${annotations.joinToString { it.toString() }}, evaluation result: $declResults" else ""}")
+    }
+}
+
+fun List<Modification>.applyTo(sourceText: String): String {
+    return StringBuilder {
+        var prevIndex = 0
+        for ((range, transform) in this@applyTo) {
+            append(sourceText, prevIndex, range.startOffset)
+            append(transform(range.substring(sourceText)))
+            prevIndex = range.endOffset
+        }
+        append(sourceText, prevIndex, sourceText.length())
+    }.toString()
+}