add bnf

.gitignore

@@ -40,3 +40,5 @@ bin/
 
 ### Mac OS ###
 .DS_Store
+
+src/main/gen

.idea/gradle.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>

build.gradle.kts

@@ -11,6 +11,13 @@ repositories {
     mavenCentral()
 }
 
+// Include the generated files in the source set
+sourceSets {
+    main {
+        kotlin.srcDirs("src/main/gen")
+    }
+}
+
 // Configure Gradle IntelliJ Plugin
 // Read more: https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html
 intellij {

src/main/kotlin/ru/crabs/sjson/SJson.bnf

@@ -0,0 +1,32 @@
+{
+  parserClass="ru.crabs.sjson.parser.SJsonParser"
+
+  extends="com.intellij.extapi.psi.ASTWrapperPsiElement"
+
+  psiClassPrefix="SJson"
+  psiImplClassSuffix="Impl"
+  psiPackage="ru.crabs.sjson"
+  psiImplPackage="ru.crabs.sjson.impl"
+
+  elementTypeHolderClass="ru.crabs.sjson.SJsonTypes"
+  elementTypeClass="ru.crabs.sjson.SJsonElementType"
+  tokenTypeClass="ru.crabs.sjson.SJsonTokenType"
+
+  tokens = [
+    space='regexp:\s+'
+    string = "regexp:\"[^$][^\"]*\""
+    number = "regexp:\d*"
+  ]
+}
+
+root ::= object
+
+object ::= "{" (prop ",")* prop "}"
+array ::= "[" (item ",")* item "]"
+
+prop ::= pair | mixin
+pair ::= string ":" item
+mixin ::= var ":" item
+
+item ::= (object | array | var | string | number)
+var ::= "regexp:\"\$[^\"]*\""

src/main/kotlin/ru/crabs/sjson/SJsonTokenType.kt

@@ -0,0 +1,13 @@
+package ru.crabs.sjson
+
+import com.intellij.psi.tree.IElementType
+
+
+class SJsonTokenType(debugName: String) : IElementType(debugName, SJsonLanguage.INSTANCE) {
+
+    override fun toString(): String {
+        return "SimpleTokenType." + super.toString();
+    }
+}
+
+class SJsonElementType(debugName: String) : IElementType(debugName, SJsonLanguage.INSTANCE)

src/main/resources/examples/Config.sjson

@@ -0,0 +1,22 @@
+{
+  "@vars": {
+    "varName": "value"
+  },
+  "@mixins": {
+    "mixinNameObj": {
+      "name": "title"
+    },
+    "mixinNameArr": [
+      "title"
+    ]
+  },
+  "@template": {
+    "test": [
+      {
+        "$mixin": "$mixinName"
+      },
+      "$varName",
+      "$mixinNameArr"
+    ]
+  }
+}