integrated the parser into the actual service provided

Author: HarrySu123

conversion2025/testing.ipynb

@@ -82,13 +82,13 @@
    "source": [
     "import requests\n",
     "\n",
-    "data = \"x^2 + y^2 = z^2\"\n",
+    "data = \"$$x^2 + y^2$$ = z^2\"\n",
     "resp = requests.post(\"http://localhost:8080/process\", data=data)\n",
     "\n",
     "if resp.ok:\n",
     "    print(\"✅ Processed:\", resp.text)\n",
     "else:\n",
-    "    print(\"❌ Error:\", resp.status_code)"
+    "    print(\"❌ Error:\", resp.text)"
    ]
   }
  ],

conversion2025/tools/validator/README.md

@@ -0,0 +1,159 @@
+# Math Delimiter Validator
+
+A Scala-based validator for mathematical expressions in Markdown format. This tool validates the correct usage of single dollar signs (`$`) for inline math and double dollar signs (`$$`) for display math expressions.
+
+## Features
+
+- **Syntax Validation**: Parses Markdown content to ensure proper math delimiter pairing
+- **Semantic Validation**: Enforces rules like no newlines in inline math expressions
+- **HTTP Server**: REST API endpoint for validation services
+- **Markdown Reconstruction**: Ability to rebuild valid Markdown from parsed structure
+
+## Requirements
+
+- Scala 3.3.1
+- sbt 1.11.3
+- Java 8 or higher
+
+## Installation
+
+Clone the repository and navigate to the validator directory:
+
+```bash
+cd /home/jimbo/lambda/in2lambda/conversion2025/tools/validator
+```
+
+## Usage
+
+### Building the Project
+
+```bash
+sbt compile
+```
+
+### Running Tests
+
+```bash
+sbt test
+```
+
+### Starting the HTTP Server
+
+```bash
+sbt run
+```
+
+The server will start on `localhost:8080` with a POST endpoint at `/process`.
+
+### Programmatic Usage
+
+```scala
+import parser.*
+import Block.*
+
+// Parse markdown content
+val result = parser.parse("Hello $x + y = z$ world!")
+result match {
+  case Right(markdown) => 
+    // Validate the parsed content
+    if (validate_markdown(markdown)) {
+      println("Valid markdown!")
+      // Rebuild if needed
+      val rebuilt = rebuild_markdown(markdown)
+    } else {
+      println("Invalid markdown content")
+    }
+  case Left(error) => 
+    println(s"Parse error: $error")
+}
+```
+
+## Validation Rules
+
+### Inline Math (`$...$`)
+- Must be enclosed by single dollar signs
+- Cannot contain newline characters
+- Example: `$x + y = z$`
+
+### Display Math (`$$...$$`)
+- Must be enclosed by double dollar signs
+- Can contain newline characters
+- Should be on separate lines for proper formatting
+- Example:
+  ```
+  $$
+  E = mc^2
+  $$
+  ```
+
+### Text
+- Regular markdown text outside of math expressions
+- Dollar signs can be escaped with backslash (`\$`)
+
+## Project Structure
+
+```
+src/
+├── main/scala/
+│   ├── Main.scala          # HTTP server entry point
+│   ├── parser.scala        # Main parsing logic using Parsley
+│   ├── lexer.scala         # Lexical analysis definitions
+│   ├── syntax.scala        # AST definitions for markdown blocks
+│   └── semantic.scala      # Validation rules and markdown reconstruction
+└── test/scala/
+    └── MainTest.scala      # Comprehensive test suite
+```
+
+## Dependencies
+
+- **Parsley**: Parser combinator library for syntax analysis
+- **http4s**: HTTP server framework
+- **cats-effect**: Functional effects library
+- **munit**: Testing framework
+
+## API
+
+### POST /process
+
+Processes markdown content and returns validation results.
+
+**Request:**
+```
+Content-Type: text/plain
+Body: Raw markdown content
+```
+
+**Response:**
+```
+Content-Type: text/plain
+Body: Processed result
+```
+
+## Development
+
+### Adding New Validation Rules
+
+1. Define new error cases in `syntax.scala`
+2. Implement validation logic in `semantic.scala`
+3. Add corresponding tests in `MainTest.scala`
+
+### Extending the Parser
+
+Modify `parser.scala` and `lexer.scala` to support additional markdown constructs while maintaining compatibility with existing math delimiter rules.
+
+## Testing
+
+The test suite covers:
+- Valid and invalid syntax parsing
+- Semantic validation rules
+- Markdown reconstruction
+- Edge cases and error conditions
+
+Run specific test suites:
+```bash
+sbt "testOnly MainSpec"
+```
+
+## License
+
+This project is part of the in2lambda conversion tools.

conversion2025/tools/validator/src/main/scala/Main.scala

@@ -1,17 +1,31 @@
+package validator
+
 import cats.effect._
-import org.http4s._
+import org.http4s.{parser => _, _}
 import org.http4s.dsl.io._
 import org.http4s.ember.server.EmberServerBuilder
 import org.http4s.server.Router
 import com.comcast.ip4s.{Host, Port}
 
+import parser.*
+import validator.{validate_markdown, rebuild_markdown}
+
 object Main extends IOApp {
 
   val mathRoutes = HttpRoutes.of[IO] {
     case req @ POST -> Root / "process" =>
-      req.as[String].flatMap { input =>
-        val cleaned = input.trim.reverse // Example logic
-        Ok(s"Processed: $cleaned")
+      req.as[String].flatMap { input => 
+        parser.parse(input) match {
+          case Right(markdown) => 
+            if (validate_markdown(markdown)) {
+              val cleaned = rebuild_markdown(markdown)
+              Ok(s"Processed: $cleaned")
+            } else {
+              BadRequest("Invalid Markdown: validation failed")
+            }
+          case Left(error) => 
+            BadRequest(s"Parse error: ${error.toString}")
+        }
       }
   }
 

conversion2025/tools/validator/src/main/scala/lexer.scala

@@ -1,16 +1,22 @@
+package validator
+
 import parsley.Parsley
-import parsley.token.{Lexer, Basic}
+import parsley.token.{Lexer, Basic, Unicode}
 import parsley.token.descriptions.*
 import parsley.errors.combinator.*
 
 // Define the lexer with a custom lexical description
 object lexer {
 
     // Define the set of generic keywords
-    private val genericKeywords = Set(
+    private val genericOperators = Set(
         "$$", "$"
     )
 
+    // private val genericKeywords = Set(
+    //     "\\$"
+    // )
+
     // Define the lexical description
     private val desc = LexicalDesc.plain.copy(
         // Define how identifiers and symbols are recognized
@@ -21,8 +27,16 @@ object lexer {
 
         // Define how symbols are recognized
         symbolDesc = SymbolDesc.plain.copy(
-            hardOperators = genericKeywords
-        )
+            hardOperators = genericOperators,
+            // hardKeywords = genericKeywords
+        ),
+
+        // textDesc = TextDesc.plain.copy(
+        //     escapeSequences = EscapeDesc.plain.copy(
+        //         escBegin = '\\',
+        //         literals = Set('$')
+        //     )
+        // )
     )
 
     private val lexer = Lexer(desc)

conversion2025/tools/validator/src/main/scala/parser.scala

@@ -1,3 +1,5 @@
+package validator
+
 import parsley.quick.*
 import parsley.syntax.zipped.*
 import parsley.expr.chain
@@ -7,10 +9,8 @@ import parsley.errors.combinator.*
 
 import lexer.{fully, text}
 import lexer.implicits.implicitSymbol
-
 import Block.*
 
-
 object parser {
   def parse[Err: ErrorBuilder](input: String): Either[Err, MarkDown] = parser.parse(input).toEither
 

conversion2025/tools/validator/src/main/scala/semantic.scala

@@ -1,4 +1,5 @@
-import Block.*
+package validator
+import Block.* 
 
 // check that the inline math does not contain newlines
 def inline_check(math: String): Boolean = !math.contains('\n')

conversion2025/tools/validator/src/main/scala/syntax.scala

@@ -1,3 +1,4 @@
+package validator
 import parsley.generic
 
 // This file defines the lexer for parsing mathematical expressions in Markdown format.

conversion2025/tools/validator/src/test/scala/MainTest.scala

@@ -35,6 +35,21 @@ class MainSpec extends FunSuite {
     assertEquals(result, Right(MarkDown(List(Display("x+y=z")))))
   }
 
+  test("display math with newlines") {
+    val result = parser.parse("$$\nE = \nmc^2\n$$")
+    assertEquals(result, Right(MarkDown(List(Display("E = \nmc^2\n")))))
+  }
+
+  // test ("allow escaped dollar signs in inline math") {
+  //   val result = parser.parse("$ x + \\$y = z $")
+  //   assertEquals(result, Right(MarkDown(List(Inline("x + $y = z ")))))
+  // }
+
+  // test ("allow escaped dollar signs in display math") {
+  //   val result = parser.parse("$$ x + \\$y = z $$")
+  //   assertEquals(result, Right(MarkDown(List(Display("x + $y = z ")))))
+  // }
+
 
   // invalid tests
   test("missing closing inline math delimiter") {
@@ -84,16 +99,16 @@ class MainSpec extends FunSuite {
     assert(validate_markdown(markdown))
   }
 
+  test("allows display math with newlines") {
+    val markdown = MarkDown(List(Display("E = mc^2\n")))
+    assert(validate_markdown(markdown))
+  }
+
   // rebuilding markdown
   test("rebuild markdown from parsed structure") {
     val markdown = MarkDown(List(Text("Hello"), Inline("x + y"), Display("E = mc^2")))
     val rebuilt = rebuild_markdown(markdown)
     assertEquals(rebuilt, "Hello$x + y$\n$$\nE = mc^2\n$$\n")
   }
 
-  test("invalid thing") {
-    val string = "Hello world$!"
-    val result = parser.parse(string)
-    assertEquals(result, Left("yikes"))
-  }
 }