rebuild parser

[clo] / src / index.js

diff --git a/src/index.js b/src/index.js
index fb887701725ab7261a7bda6b47b78fa15babc3a5..bd62a482ca9328e21b9ae296d7f4ba8554582df3 100644 (file)
--- a/src/index.js
+++ b/src/index.js
@@ -23,39 +23,176 @@ var __importStar = (this && this.__importStar) || function (mod) {
     return result;
 };
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.match1token = void 0;
+exports.m1TType = void 0;
 var fs = require('fs');
+const node_process_1 = require("node:process");
 const tk = __importStar(require("./tokenize.js"));
-let b = tk.tokenize("2+2");
+const util = __importStar(require("util"));
+/**
+ * debug reprensenting
+ */
+let repr = (x) => { return util.inspect(x, { depth: null }); };
+/**
+ * concated 2 `tkTree`s
+ * @param x the array to be concated
+ * @param y the item or array to ve concated
+ * @returns concated tkTree array, or thrown error if can't be concated.
+ */
+function concat(x, y) {
+    if (Array.isArray(x)) {
+        return x.concat(y);
+    }
+    else {
+        throw new Error("the tkTree can't be concated, because it's not an array.");
+    }
+}
+function slice(x, index, end) {
+    if (Array.isArray(x)) {
+        return x.slice(index, end);
+    }
+    else {
+        throw new Error("the tkTree can't be concated, because it's not an array.");
+    }
+}
 /**
  * @description
- * it returns a function which test if the first char of the `remained` part of
- *  the argument of the function is `c`, if it's true, update the `MatchedPair` wrapped
+ * match one token type.
+ *
+ * it returns a function which test if the type of first token of the `remained` part of
+ *  the argument of the function is `typ` , if it's true, update the `TokenMatcheePair` wrapped
  * in `Some`. Otherwise, it returns `None`.
- *  * @param t : the char to be test.
- * @returns the updated `MatchedPair` wrapped in `Some(x)` or `None`.
+ *  * @param typ : the type to be test.
+ * @returns the updated `TokenMatcheePair` wrapped in `Some(x)` or `None`.
  */
-function match1token(t) {
+function m1TType(typ) {
     return (m) => {
         if (m.remained.length == 0) {
             return { _tag: "None" };
         }
-        const tokenToBeMatched = m.remained[0];
-        if (tokenToBeMatched === t) {
-            m.matched.push(tokenToBeMatched);
-            return {
+        /**
+         * token to be matched
+         * */
+        const ttbm = m.remained[0];
+        if (ttbm.type == typ) {
+            let new_matched = m.matched.concat(ttbm);
+            let result = {
                 _tag: "Some", value: {
-                    matched: m.matched,
-                    remained: m.remained.slice(1)
+                    matched: new_matched,
+                    remained: m.remained.slice(1),
+                    ast: ([ttbm]),
                 }
             };
+            return result;
         }
         else {
             return { _tag: "None" };
         }
     };
 }
-exports.match1token = match1token;
+exports.m1TType = m1TType;
 ;
-let c = tk.toSome(b);
-console.log(thenDo(c, match1token(tk.tokenize("+")[0])));
+/**
+ * type int
+ */
+let tInt = m1TType(tk.TokenType.INT);
+let tAdd = m1TType(tk.TokenType.I_ADD);
+let tMul = m1TType(tk.TokenType.I_MUL);
+node_process_1.argv.forEach((val, index) => {
+    console.log(`${index}=${val}`);
+});
+/**
+ * like `m ==> f` in ocaml
+ * @param m matchee wrapped
+ * @param f matching function
+ * @returns wrapped result
+ */
+function thenDo(m, f) {
+    if (m._tag == "None") {
+        return m;
+    }
+    else {
+        var a = f(m.value);
+        if (a._tag == "Some") {
+            a.value.ast = concat(m.value.ast, a.value.ast);
+        }
+        return a;
+    }
+}
+/**
+ * like `f1 | f2` in regex
+ * @param f1 the first tried function
+ * @param f2 the second tried function
+ * @returns wrapped result
+ */
+function orDo(f1, f2) {
+    return (x) => {
+        let res1 = f1(x);
+        if (res1._tag == "Some") {
+            return res1;
+        }
+        else {
+            let res2 = f2(x);
+            return res2;
+        }
+    };
+}
+let midfix = (f, signal) => (x) => {
+    var a = f(x);
+    if (a._tag == "Some") {
+        let ast_head = slice(a.value.ast, 0, a.value.ast.length - 3);
+        let ast_tail = slice(a.value.ast, a.value.ast.length - 3);
+        let new_ast = [ast_tail];
+        a.value.ast = new_ast;
+        console.log("+" + signal + "+" + repr(a));
+    }
+    return a;
+};
+/**
+ *
+ * fac1 = int MUL int
+ */
+//let fac1 = midfix((x : TokenMatcheePair)=>
+//            thenDo(thenDo(thenDo(tk.toSome(x), tInt), tMul), tInt));
+let fac1 = (x) => {
+    let a = midfix((x) => thenDo(thenDo(thenDo(tk.toSome(x), tInt), tMul), tInt), "fac1")(x);
+    return a;
+};
+/**
+ *
+ * fac2 = int MUL int
+ */
+let fac2 = tInt;
+/**
+ * fac = fac1 | fac2
+ */
+let fac = orDo(fac1, fac2);
+/**
+ *
+ * expr1 = fac ADD fac
+ */
+let expr1 = midfix((x) => thenDo(thenDo(thenDo(tk.toSome(x), fac), tAdd), fac), "expr1");
+/**
+ * expr2 = fac
+ */
+let expr2 = fac;
+/**
+ * expr = expr1 | expr2
+ */
+let expr = orDo(expr1, expr2);
+let tokens = tk.tokenize("2+3"); //tk.tokenize(argv[2]);
+let tokensFiltered = tokens.filter((x) => {
+    return (x.type != tk.TokenType.NL
+        && x.type != tk.TokenType.SP);
+});
+let wrappedTokens = tk.toSome({
+    matched: [],
+    remained: tokensFiltered,
+    ast: []
+});
+let beta = expr({
+    matched: [],
+    remained: tokensFiltered,
+    ast: []
+});
+console.log(repr(wrappedTokens));
+console.log(repr(beta));