const node_process_1 = require("node:process");
const tk = __importStar(require("./tokenize.js"));
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
* match one token type.
* */
const ttbm = m.remained[0];
if (ttbm.type == typ) {
- m.matched.push(ttbm);
- return {
+ 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.m1TType = m1TType;
;
-let toSome = tk.toSome;
-let thenDo = tk.thenDo;
-let orDo = tk.orDo;
+/**
+ * type int
+ */
+let tInt = m1TType(tk.TokenType.INT);
+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);
node_process_1.argv.forEach((val, index) => {
console.log(`${index}=${val}`);
});
-let commandInput = node_process_1.argv[2];
-let commandInputTokenized = tk.tokenize(commandInput);
-console.log(commandInputTokenized);
/**
- * matchee pair of commandInputTokenized
+ * like `m ==> f` in ocaml
+ * @param m matchee wrapped
+ * @param f matching function
+ * @returns wrapped result
*/
-let commandTPair = { matched: [],
- remained: commandInputTokenized };
-let tInt = m1TType(tk.TokenType.INT);
-let tFlo = m1TType(tk.TokenType.FLO);
-let tStr = m1TType(tk.TokenType.STR);
-function tBool(x) {
- let text = x.remained[0].text;
- if (text == "true" || text == "false") {
- return thenDo(toSome(x), m1TType(tk.TokenType.ID));
+function thenDo(m, f) {
+ if (m._tag == "None") {
+ return m;
}
else {
- return { _tag: "None" };
+ var a = f(m.value);
+ if (a._tag == "Some") {
+ a.value.ast = concat(m.value.ast, a.value.ast);
+ }
+ return a;
}
}
/**
- * define the right hand side of a grammar
- * eg. `LHS ::= a + b`
- * @param process the right hand side processing : eg. `a + b` in `LHS`
- * @param arrange define the order (0 starting) of the elements of the result.
- * ast. : eg. `a + c` is `1 0 2` `(+ a c)`
- * @returns the processed ast.
+ * like `f1 | f2` in regex
+ * @param f1 the first tried function
+ * @param f2 the second tried function
+ * @returns wrapped result
*/
-function gramRHS(process, arrange) {
- return (m) => {
- let result = process(m);
- console.log(`result ${result}`);
- if (result._tag == "None") {
- return result;
+function orDo(f1, f2) {
+ return (x) => {
+ let res1 = f1(x);
+ if (res1._tag == "Some") {
+ return res1;
}
else {
- let matched = result.value.matched;
- let return_array = Array(arrange.length);
- arrange.forEach((val, index) => {
- return_array[arrange[index]] = matched[index];
- });
- return return_array;
+ let res2 = f2(x);
+ return res2;
}
};
}
-var constParser = gramRHS((x) => { return thenDo(toSome(x), orDo(orDo(orDo(tInt, tFlo), tStr), tBool)); }, [0]);
-let tree = constParser(commandTPair);
-console.log(util.inspect(tree, { showHidden: true, depth: null }));
+/**
+ * aux function for midfix operator
+ * @param f function
+ * @param signal the rule name
+ * @returns
+ */
+let midfix = (f, signal) => (x) => {
+ var a = f(x);
+ if (a._tag == "Some") {
+ 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;
+};
+let circumfix = (f, signal) => (x) => {
+ var a = f(x);
+ if (a._tag == "Some") {
+ let inner = a.value.ast[a.value.ast.length - 2];
+ console.log("AST====" + repr(a.value.ast));
+ let ast_middle = [inner];
+ let new_ast = [ast_middle];
+ a.value.ast = new_ast;
+ console.log("+" + signal + "+" + repr(a));
+ }
+ return a;
+};
+/** fac1 = "(" expr ")" */
+let fac1 = circumfix((x) => thenDo(thenDo(thenDo(tk.toSome(x), tLParen), expr), tRParen), "fac1");
+let fac2 = tInt;
+let fac = orDo(fac1, fac2);
+/**
+ *
+ * term1 = fac (MUL | DIV) fac
+ */
+let term1 = midfix((x) => thenDo(thenDo(thenDo(tk.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) => thenDo(thenDo(thenDo(tk.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("(4-(3/4))"); //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(beta));
projects / clo / blobdiff