X-Git-Url: https://git.kianting.info/?a=blobdiff_plain;f=src%2Findex.ts;h=46c4a7205501d288c574df83980d0e910e4bfd63;hb=4fd4c8a4b69464bf1ac74af920175308656e6f6b;hp=55e3d65db7b9894c9aead54e69cfa73e657a1520;hpb=cda463d89022d09a5273b59bcd3e776f1127697a;p=clo

diff --git a/src/index.ts b/src/index.ts
index 55e3d65..46c4a72 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,38 +1,114 @@
 var fs = require('fs');
-
+import { argv, resourceUsage } from 'node:process';
 import * as tk from './tokenize.js';
+import * as util from 'util';
+import { drawEllipsePath, reduceRotation } from 'pdf-lib';
+import { isAnyArrayBuffer, isTypedArray } from 'node:util/types';
+import { error } from 'node:console';
+import { isUndefined } from 'node:util';
 
+/**
+ * debug reprensenting
+ */
+let repr = (x : any)=>{return util.inspect(x, {depth: null})};
 
+/**
+ * token tree type.
+ */
+type tkTree = tkTree[] | tk.Token
+
+/**
+ * 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: tkTree, y:tkTree): tkTree[] {
+    if (Array.isArray(x)){
+            return x.concat(y);
+    }else{
+        throw new Error("the tkTree can't be concated, because it's not an array.");
+        
+    }
+}
 
-let b : Array<tk.Token> = tk.tokenize("2+2");
+function slice(x: tkTree, index?:number, end?:number): tkTree[] {
+    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.");
+        
+    }
+}
 
+/**
+ * TokenMatcheePair for tokens' parser combinator
+ *  
+ * matched: the matched (now and before) tokens
+ * 
+ * remained: tokens to be matched
+ * 
+ * ast: abstract syntax tree
+ */
 export interface TokenMatcheePair {
     matched: tk.Token[]
     remained: tk.Token[]
+    ast : tkTree[]
+}
+
+/**
+ * convert a `tkTree` AST to S-expr string
+ * @param t the `tkTree`
+ * @returns S-expr String
+ */
+export function tkTreeToSExp(t: tkTree): string{
+    var str = "";
+
+    if (Array.isArray(t)){
+        let strArray = t.map((x)=>tkTreeToSExp(x));
+        str = "(" + strArray.join(" ") + ")";
+    }else{
+        if (t=== undefined){
+            str = "%undefined"
+        }else{
+            str = t.text;
+        }
+    }
+
+    return str;
 }
 
 /**
  * @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`.
  */
-export function match1token(t: tk.Token): (m: TokenMatcheePair) => tk.Maybe<TokenMatcheePair> {
+export function m1TType(typ: tk.TokenType):
+    (m: TokenMatcheePair) => tk.Maybe<TokenMatcheePair> {
     return (m: TokenMatcheePair) => {
         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 : tk.Some<TokenMatcheePair> = {
                 _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" };
@@ -40,7 +116,361 @@ export function match1token(t: tk.Token): (m: TokenMatcheePair) => tk.Maybe<Toke
     }
 };
 
+/**
+ * type int
+ */
+let tInt  = m1TType(tk.TokenType.INT);
+let tId  = m1TType(tk.TokenType.ID);
+
+
+let tAdd  = m1TType(tk.TokenType.I_ADD);
+let tSub = m1TType(tk.TokenType.I_SUB);
+let tMul  = m1TType(tk.TokenType.I_MUL);
+let tDiv = m1TType(tk.TokenType.I_DIV);
+let tLParen = m1TType(tk.TokenType.L_PAREN);
+let tRParen = m1TType(tk.TokenType.R_PAREN);
+let tComma = m1TType(tk.TokenType.COMMA);
+let toSome = tk.toSome;
+
+
+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 : tk.Maybe<TokenMatcheePair>, f : Function){
+    if (m._tag == "None"){
+        return m;
+    }else{
+        var a : tk.Maybe<TokenMatcheePair> = 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 : Function, f2 : Function){
+    return (x : TokenMatcheePair) =>{
+        let res1 : tk.Maybe<TokenMatcheePair> = f1(x);
+        if (res1._tag == "Some"){
+            return res1;
+        }else{
+            let res2 : tk.Maybe<TokenMatcheePair> = f2(x);
+            return res2;
+        }
+    } 
+}
+
+
+/**
+ * 
+ * @param m : the `MatcheePair` to be consumed.
+ * @returns if the length of `m.remained` >= 1; consumes the matchee by 1 token
+ *  and wraps it in `Some`,
+ * otherwise, returns `None`.
+ */
+export function matchAny(m: TokenMatcheePair): tk.Maybe<TokenMatcheePair> {
+    if (m.remained.length >= 1) {
+        return {
+            _tag: "Some", value: {
+                matched: m.matched.concat(m.remained[0]),
+                remained: m.remained.slice(1),
+                ast :  [m.remained[0]],
+            }
+        };
+    } else {
+        return { _tag: "None" };
+    }
+}
+
+/**
+ * Danger : Maybe it's not enough to work.
+* @description repeating matching function `f` 
+* zero or more times, like the asterisk `*` in regex `f*` . 
+* @param f : the function to be repeated 0+ times.
+* @returns:the combined function
+*/
+export function OnceOrMoreDo(f: Function): (x: TokenMatcheePair) =>
+    tk.Maybe<TokenMatcheePair> {
+    return (x) => {
+        var wrappedOldX: tk.Maybe<TokenMatcheePair> = { _tag: "Some", value: x };
+        var wrappedNewX: tk.Maybe<TokenMatcheePair> = wrappedOldX;
+
+        var counter = -1;
+
+        while (wrappedNewX._tag != "None") {
+            wrappedOldX = wrappedNewX;
+            wrappedNewX = thenDo(wrappedOldX, f);
+            counter += 1;
+
+        };
+
+        if (counter <= 0){
+            return { _tag: "None"};
+        }
+        let ast = wrappedOldX.value.ast ;
+        wrappedOldX.value.ast =ast.slice(ast.length-counter);
+        console.log(repr(wrappedOldX.value.ast));
+
+        return wrappedOldX; };
+}
+
+/**
+ * aux function for midfix operator
+ * @param f function
+ * @param signal the rule name
+ * @returns 
+ */
+let midfix = (f : Function, signal? : string) => (x : TokenMatcheePair)=>{
+    var a = f(x);
+    if (a._tag == "Some"){
+        let ast_tail : tkTree[] = 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;
+}
+
+let circumfix = (f : Function, signal? : string) => (x : TokenMatcheePair)=>{
+    var a : tk.Maybe<TokenMatcheePair> = f(x);
+    if (a._tag == "Some"){
+        console.log("$$$"+repr(a.value.ast));
+        let inner = a.value.ast[a.value.ast.length-2];
+        var ast_middle : tkTree[];
+        // the list should not be (%list) (%apply) (%lambda) etc.
+        if (Array.isArray(inner)){
+            if ('text' in inner[0]  && (inner[0].text.slice(0,1) != "%")){
+                ast_middle = inner;
+            }
+            else{
+                ast_middle = [inner];
+            }
+        }
+        else{
+            ast_middle = [inner];
+        }
+        let new_ast = [ast_middle];
+        a.value.ast = new_ast;
+    }
+    return a;
+}
+
+/** single1 = tInt | "(" expr ")"*/
+let single1 = circumfix((x : TokenMatcheePair) =>
+    thenDo(thenDo(thenDo(toSome(x), tLParen), expr), tRParen), "fac1");
+let single2= tInt;
+let single = orDo(single1, single2);
+
+/** args = single "," args | single */
+let args1 = (x: TokenMatcheePair)=>{
+    var ret = thenDo(thenDo(thenDo(toSome(x), single), tComma), args);
+    if (ret._tag == "Some"){
+        let retLength = ret.value.ast.length;
+        ret.value.ast = [[ret.value.ast[retLength-3]].concat(ret.value.ast[retLength-1])];
+        console.log("$$"+repr(ret.value.ast));
+    }
+    return ret;
+};
+
+let args2 = single;
+
+let args = orDo(args1, args2);
+
+
+/** callees = "(" args ")" | "(" ")" */
+
+
+let callees1 = circumfix((x : TokenMatcheePair) =>
+    thenDo(thenDo(thenDo(toSome(x), tLParen), args), tRParen), "callees1");
+let callees2 = (x: TokenMatcheePair)=>{
+    let ret = thenDo(thenDo(toSome(x), tLParen), tRParen);
+    if (ret._tag == "Some"){
+        let new_ast : tkTree[] = [[]];
+        ret.value.ast = new_ast;
+    }
+    
+    return ret};
+
+let callees = orDo(callees1, callees2);
+
+
+
+/** %apply R combinating token */
+let applyToken = {
+    text: "%apply",
+    type: tk.TokenType.ID,
+    col: 0,
+    ln: 0,
+}
+
+/** facAux = callees facAux |  callees */
+let facAux1 = (x: TokenMatcheePair)=>{
+    var ret = thenDo(thenDo(toSome(x), callees), facAux);
+    if (ret._tag == "Some"){
+        console.log("1232345"+repr(tkTreeToSExp(ret.value.ast[ret.value.ast.length-1])));
+    let last1  = ret.value.ast[ret.value.ast.length-1];
+    let last2  = ret.value.ast[ret.value.ast.length-2];
+
+    
+    let b : tkTree[] = [applyToken];
+    ret.value.ast = [b.concat([last2, last1])];
+    console.log("11111"+repr(tkTreeToSExp(ret.value.ast)));
+
+    };
+
+return ret;}
+let facAux2 = callees;
+let facAux =  orDo(facAux1, facAux2);
+
+
+
+/** fac = single facAux | single
+ * Issue1 to be fixed.
+ */
+let fac1 = (x: TokenMatcheePair)=>{
+    var ret = thenDo(thenDo(toSome(x), single),facAux);
+    if(ret._tag == "Some"){
+        console.log("777"+repr(tkTreeToSExp(ret.value.ast)));
+        ret.value.ast = [applyToken, ret.value.ast[ret.value.ast.length-2],
+                        ret.value.ast[ret.value.ast.length-1]];
+        ret.value.ast;
+        rearrangeTree(ret.value.ast);
+        console.log("888"+repr(tkTreeToSExp(ret.value.ast)));
+
+    }
+
+    return ret;};
+let fac2 = single;
+let fac = orDo(fac1, fac2);
+
+
+/**
+ * rearrangeTree : for applyToken subtree from right-combination to 
+ * left-combination
+ * @input x a ast
+ * @return another ast
+ */
+function rearrangeTree(x: any) : any {
+    
+        if (x !== undefined){
+            for (var i=1;i<x.length;i++){
+                rearrangeTree(x[i]);
+            }
+            console.log("@@"+repr(x[0]));
+
+            if (x[0] == applyToken){
+                if (Array.isArray(x[2]) && x[2][0] == applyToken){
+                    let rl = rearrangeTree(x[2][1]);
+                    let rr = rearrangeTree(x[2][2]);
+                    let l = rearrangeTree(x[1]);
+                    x[0] = applyToken;
+                    x[1] = [applyToken, l, rl];
+                    x[2] = rr;
+                    console.log("@@=="+repr(x));
+
+                    return x;
+                }
+                else{
+                    x[0] = applyToken;
+                    x[1] = rearrangeTree(x[1]);
+                    x[2] = rearrangeTree(x[2]);
+                    console.log("@@=="+repr(x));
+
+
+                    return x;
+                }
+            }
+
+            return x;
+        }
+    }
+        
+
+
+
+/**
+ * 
+ * term1 = fac (MUL | DIV) fac
+ */
+
+let term1 = midfix((x : TokenMatcheePair)=>
+            thenDo(thenDo(thenDo(toSome(x), fac), orDo(tMul,tDiv)), fac), "term1");
+
+            
+/**
+ * 
+ * term2 = int MUL int
+ */
+let term2 = fac;
+
+/**
+ * term = term1 | term2
+ */
+let term = orDo(term1, term2);
+ 
+
+/**
+ * 
+ * expr1 = term ADD term
+ */
+let expr1 = midfix((x : TokenMatcheePair)=>
+                thenDo(thenDo(thenDo(toSome(x), term), orDo(tAdd,tSub)), term), "expr1");
+/**
+ * expr2 = term
+ */
+let expr2 = term;
+
+/**
+ * expr = expr1 | expr2
+ */
+let expr = orDo(expr1, expr2);
+
+
+
+let tokens = tk.tokenize("1");
+let tokens2 = tk.tokenize("1(2)");
+let tokens3 = tk.tokenize("1(2)(3)");
+let tokens4 = tk.tokenize("2()(4)(5,6)(7,8,9,10)");
+
+//let tokens = tk.tokenize("(4-(3/4))");
+//tk.tokenize(argv[2]);
+
+let tokensFiltered = tokens4.filter(
+    (x)=>{return (x.type != tk.TokenType.NL
+            && x.type != tk.TokenType.SP)});
+
+
+
+let beta = expr({
+        matched : [] ,
+        remained : tokensFiltered,
+        ast : []});
+
+
+
+if (beta._tag == "Some"){
+    beta.value.ast = rearrangeTree(beta.value.ast);
+    console.log(tkTreeToSExp(beta.value.ast));
+
+}
 
+console.log("RESULT="+repr(beta));
 
-let c = tk.toSome(b);
-console.log(thenDo(c,match1token(tk.tokenize("+")[0])));
\ No newline at end of file