X-Git-Url: https://git.kianting.info/?a=blobdiff_plain;f=src%2Findex.ts;h=44aa79282788f7f8fd28679017ceb114c49c3149;hb=c3dc58d74afa6b298d84bad90d63c027a32a954a;hp=60e74871dc96261bf3ddcb2eb4d3b332952f8f57;hpb=fed01e9044149985b3df74a9225ce68805b8f478;p=clo

diff --git a/src/index.ts b/src/index.ts
index 60e7487..44aa792 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,190 +1,68 @@
 var fs = require('fs');
-import jsTokens from "js-tokens";
-import * as util from 'util';
+var argv : any = require('minimist')(process.argv.slice(2));
+
+import * as parser from "./parser.js";
 
 /**
- * 
- * # REPRESENTATION
- */
-/**
- * convert a `tkTree` AST to S-expr string
- * @param t the `tkTree`
- * @returns S-expr String
+ * help for inputing `--help` parameter.
  */
-export function tkTreeToSExp(t: tkTree): string{
-    var str = "";
+export let helpDesc =
+`
+clo: clo INPUT_FILE --output-js OUTPUT_JS_FILE
 
-    if (Array.isArray(t)){
-        let strArray = t.map((x)=>tkTreeToSExp(x));
-        str = "(" + strArray.join(" ") + ")";
-    }else{
-        if (t=== undefined){
-            str = "%undefined"
-        }else{
-            str = t.value;
-        }
-    }
+\ta little typesetter powered by TypeScript/Javascript.
 
-    return str;
-}
+## Arguments
+INPUT_FILE\tan input .clo file
 
-/**inspect the inner of the representation. */
-let repr = (x : any)=>{return util.inspect(x, {depth: null})};
-/**
- * 
- * # TYPES
- */
+## Parameters
+---
+--output-js\tgenerated the output middle JS file
 
-/**
- * TokenPair for tokens' parser combinator
- *
- * matched: the matched (now and before) tokens
- * 
- * remained: tokens to be matched
- * 
- * ast: abstract syntax tree
- */
-export interface TokenPair {
-    matched: jsTokens.Token[]
-    remained: jsTokens.Token[]
-    ast : tkTree[]
-}
-export type Some<T> = { _tag: "Some"; value: T };
-export type None = { _tag: "None" };
-export type Maybe<T> = Some<T> | None;
 
-type Token = jsTokens.Token;
-type tkTree = Token | tkTree[];
+Report bugs to: clo@kianting.info
+clo home page: <https://kianting.info/wiki/w/Project:Clo>
+`
 
-/**
- * 
- * # PARSER UNITS
- */
-function toSome<T>(x:T): Maybe<T>{
-    return {_tag: "Some", value: x};
-}
+processArgv(argv, helpDesc);
 
 /**
- * like `m ==> f` in ocaml
- * @param m matchee wrapped
- * @param f matching function
- * @returns wrapped result
+ * processing the passed `argv` (arguments)
  */
-function thenDo(m : Maybe<TokenPair>, f : Function){
-    if (m._tag == "None"){
-        return m;
-    }else{
-        var a : Maybe<TokenPair> = f(m.value);
-        if (a._tag == "Some"){
-            a.value.ast = m.value.ast.concat(a.value.ast);
-        }
 
-        return a;
-    }
-}
-/**
- * 
- * @param m : the `TokenPair` 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: TokenPair): Maybe<TokenPair> {
-    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" };
-    }
-}
+export function processArgv(argv : any, helpDesc : string){
+    let inputFile : string[] = argv['_'];
+    let outputJSFile : string | true = argv['output-js'];
 
-/**
- * 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 : TokenPair) =>{
-        let res1 : Maybe<TokenPair> = f1(x);
-        if (res1._tag == "Some"){
-            return res1;
-        }else{
-            let res2 : Maybe<TokenPair> = f2(x);
-            return res2;
-        }
-    } 
-}
+    let NoInputFile : boolean = (inputFile.length == 0);
+    let NoOutputJSFile : boolean = (outputJSFile === undefined || outputJSFile == true);
+    let helpTriggered : boolean = argv['help'];
 
-/**
- * like regex [^c]
- * @param f input token function. one token only.
- * @returns combined finction
- */
-function notDo(f : Function){
-    return (x : TokenPair) =>{
-        let res1 : Maybe<TokenPair> = f(x);
-        if (res1._tag == "Some"){
-            return {_tag:"None"};
-        }else{
-            let res2 = matchAny(x);
-            return res2;
-        }
-    } 
-}
-
-function matchToken(typeName : string, value? : string):
- (t : TokenPair) => Maybe<TokenPair>{
-    return (t)=>{
-        let headToken = t.remained[0];
-        if (headToken.type != typeName){
-            return {_tag:"None"};
-        }else{
-            if (value === undefined || value == headToken.value){
-                let newTokenPair = {
-                    matched: t.matched.concat(headToken),
-                    remained: t.remained.slice(1),
-                    ast : [headToken]
-                };
-                return {_tag : "Some", value : newTokenPair};
-            }else{
-                return {_tag:"None"};
-            }
-        };
+    if (inputFile.length > 1){
+        console.log("Sorry, the input file should be only one.");
     }
-};
 
+    /** output --help */
+    if (helpTriggered || NoInputFile || NoOutputJSFile){
+        console.log(helpDesc);
+    }else{
+        fs.readFile(inputFile[0], 'utf8', (err : Error, inputText : string) => {
+            if (err) throw err;
 
-/**
- * 
- * # TEST
- */
-const tokens = Array.from(jsTokens(
-`import foo from\t 'bar';
-import * as util  from 'util';
+            let tree = parser.inputTextToTree(inputText);
 
+            let output = parser.treeToJS(tree);
 
-花非花，霧\\{非霧 。{{foo();}}下
-一句`));
+            fs.writeFile(outputJSFile, output , (err : Error) => {
+                if (err) throw err;
+              });
 
-console.log("RESULT="+repr(tokens));
+          }); 
+    }
+
+}
 
 
-var mainTokenPair : TokenPair = {
-    matched : [] ,
-    remained : tokens,
-    ast : []};
 
-let a = thenDo(thenDo(toSome(mainTokenPair), matchToken('IdentifierName')),
-        notDo(matchToken('Punctuator', ';')));
 
 
-console.log("RESULT="+repr(a));
-if (a._tag == "Some"){
-    console.log("SEXP="+tkTreeToSExp(a.value.ast));
-}