From e01cb693bc5737792e2b37abfd98d2d8f81bac4d Mon Sep 17 00:00:00 2001
From: Akshay Nair <phenax5@gmail.com>
Date: Thu, 10 Aug 2023 22:45:00 +0530
Subject: feat: adds simple evaluator

---
 src/parse-expr.ts | 66 -------------------------------------------------------
 1 file changed, 66 deletions(-)
 delete mode 100644 src/parse-expr.ts

(limited to 'src/parse-expr.ts')

diff --git a/src/parse-expr.ts b/src/parse-expr.ts
deleted file mode 100644
index 1c5c08f..0000000
--- a/src/parse-expr.ts
+++ /dev/null
@@ -1,66 +0,0 @@
-import { Enum, constructors, match } from './utils/adt'
-import * as P from './utils/parser-comb'
-
-export type Expr = Enum<{
-  Call: { name: string; args: Expr[] }
-  Identifier: string
-  VarIdentifier: string
-  LiteralString: string
-}>
-
-export const Expr = constructors<Expr>()
-
-const whitespace = P.regex(/^\s*/)
-const consumeWhitespace = <A>(p: P.Parser<A>): P.Parser<A> =>
-  P.between(whitespace, p, whitespace)
-const comma = consumeWhitespace(P.string(','))
-const parens = <A>(p: P.Parser<A>): P.Parser<A> =>
-  P.between(P.string('('), p, P.string(')'))
-const identifierParser = P.regex(/^[a-z][a-z0-9_-]*/i)
-const varIdentifierParser = P.regex(/^--[a-z][a-z0-9-]*/i)
-const singleQuote = P.string("'")
-const doubleQuote = P.string('"')
-
-const identifierExprParser = P.map(identifierParser, Expr.Identifier)
-const varIdentifierExprParser = P.map(varIdentifierParser, Expr.VarIdentifier)
-
-const callExprParser = (input: string) =>
-  P.map(
-    P.zip2(
-      consumeWhitespace(identifierParser),
-      parens(consumeWhitespace(P.sepBy(exprParser, comma)))
-    ),
-    ([name, args]) => Expr.Call({ name, args })
-  )(input)
-
-const stringLiteralParser: P.Parser<Expr> = P.map(
-  P.or([
-    P.between(singleQuote, P.regex(/^[^']*/), singleQuote),
-    P.between(doubleQuote, P.regex(/^[^"]*/), doubleQuote),
-  ]),
-  Expr.LiteralString
-)
-
-const exprParser: P.Parser<Expr> = P.or([
-  stringLiteralParser,
-  varIdentifierExprParser,
-  callExprParser,
-  identifierExprParser,
-])
-
-const multiExprParser = P.many1(exprParser)
-
-export const parse = (input: string): Array<Expr> => {
-  const res = multiExprParser(input.trim())
-  return match(res, {
-    Ok: ({ value, input }) => {
-      if (input) {
-        throw new Error(`Input not consumed completely here brosky: "${input}"`)
-      }
-      return value
-    },
-    Err: ({ error, input }) => {
-      throw new Error(`${error}.\n Left input: ${input.slice(0, 20)}...`)
-    },
-  })
-}
-- 
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