assigning binary, octal, hex value to number

src/backend/binaryen/wasm_expr_gen.ts

@@ -297,7 +297,7 @@ export class WASMExpressionGen {
                 } else {
                     return FunctionalFuncs.generateStringForStructArrayStr(
                         this.module,
-                        processEscape(value.value as string),
+                        value.value as string,
                     );
                 }
             }
@@ -330,15 +330,8 @@ export class WASMExpressionGen {
     }
 
     private createStringRef(value: string): binaryen.ExpressionRef {
-        let str = value;
-        if (
-            (str.startsWith("'") && str.endsWith("'")) ||
-            (str.startsWith('"') && str.endsWith('"'))
-        ) {
-            str = str.substring(1, str.length - 1);
-        }
-        const ptr = this.wasmCompiler.generateRawString(str);
-        const len = UtilFuncs.utf16ToUtf8(str).length;
+        const ptr = this.wasmCompiler.generateRawString(value);
+        const len = UtilFuncs.utf16ToUtf8(value).length;
         return FunctionalFuncs.generateStringForStringref(
             this.module,
             this.module.i32.const(ptr),

src/expression.ts

@@ -7,7 +7,13 @@ import ts from 'typescript';
 import { ParserContext } from './frontend.js';
 import { ClosureEnvironment, FunctionScope } from './scope.js';
 import { Variable } from './variable.js';
-import { getCurScope, addSourceMapLoc, isTypeGeneric } from './utils.js';
+import {
+    getCurScope,
+    addSourceMapLoc,
+    isTypeGeneric,
+    processEscape,
+    decimalization,
+} from './utils.js';
 import {
     TSArray,
     TSFunction,
@@ -495,14 +501,16 @@ export default class ExpressionProcessor {
             }
             case ts.SyntaxKind.NumericLiteral: {
                 res = new NumberLiteralExpression(
-                    parseFloat((<ts.NumericLiteral>node).getText()),
+                    parseFloat(
+                        decimalization((<ts.NumericLiteral>node).getText()),
+                    ),
                 );
                 res.setExprType(this.typeResolver.generateNodeType(node));
                 break;
             }
             case ts.SyntaxKind.StringLiteral: {
                 res = new StringLiteralExpression(
-                    (<ts.StringLiteral>node).getText(),
+                    processEscape((<ts.StringLiteral>node).getText()),
                 );
                 res.setExprType(this.typeResolver.generateNodeType(node));
                 break;

src/utils.ts

@@ -401,21 +401,30 @@ export function addSourceMapLoc(irNode: Statement | Expression, node: ts.Node) {
     irNode.debugLoc = { line: line, character: character };
 }
 
+// The character '\' in the string got from API getText is not treated
+// as a escape character.
+/**
+ * @describe process escapes in a string
+ * @param str the raw string got from API getText
+ * @returns a new str
+ */
 export function processEscape(str: string) {
     const escapes1 = ['"', "'", '\\'];
     const escapes2 = ['n', 'r', 't', 'b', 'f'];
     const appendingStr = ['\n', '\r', '\t', '\b', '\f'];
     let newStr = '';
+    let code: string;
     for (let i = 0; i < str.length; i++) {
-        if (
-            str[i] == '\\' &&
-            i < str.length - 1 &&
-            (escapes1.includes(str[i + 1]) || escapes2.includes(str[i + 1]))
-        ) {
+        if (str[i] == '\\' && i < str.length - 1) {
             if (escapes1.includes(str[i + 1])) {
+                // binaryen will generate escape automaticlly for characters in escapes1
                 newStr += str[i + 1];
             } else if (escapes2.includes(str[i + 1])) {
                 newStr += appendingStr[escapes2.indexOf(str[i + 1])];
+            } else if (str[i + 1] == 'x') {
+                code = decimalizationInternal(str.substring(i + 2, i + 4), 16);
+                newStr += String.fromCharCode(parseFloat(code));
+                i += 2;
             }
             i += 1;
             continue;
@@ -428,6 +437,51 @@ export function processEscape(str: string) {
     return newStr;
 }
 
+export function decimalization(value: string) {
+    let systemNumeration = 0;
+    if (value.length < 2) {
+        return value;
+    }
+    if (value[0] == '0') {
+        switch (value[1]) {
+            case 'b':
+            case 'B': {
+                systemNumeration = 2;
+                break;
+            }
+            case 'o':
+            case 'O': {
+                systemNumeration = 8;
+                break;
+            }
+            case 'x':
+            case 'X': {
+                systemNumeration = 16;
+                break;
+            }
+        }
+    }
+    if (systemNumeration == 0) {
+        return value;
+    }
+    return decimalizationInternal(
+        value.substring(2, value.length),
+        systemNumeration,
+    );
+}
+
+function decimalizationInternal(value: string, systemNumeration: number) {
+    let decimal = 0;
+    let num = 0;
+    let code = 0;
+    for (let i = 0; i < value.length; i++) {
+        code = value[i].charCodeAt(0);
+        num = code >= 65 && code <= 70 ? 10 + code - 65 : parseFloat(value[i]);
+        decimal = decimal * systemNumeration + num;
+    }
+    return decimal.toString();
+}
+
 /**
  * @describe create a new classScope based on classType information
  * @param originalClassScope the original ClassScope to be specialized

tests/samples/decimalization.ts

@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2023 Xiaomi Corporation.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+export function initNumberWithBinary() {
+    let value = 0b00101;    // 5
+    console.log(value);
+
+    value = 0B001010;        // 10
+    console.log(value);
+}
+
+export function initNumberWithOctal() {
+    let value = 0O000171;   // 64 + 56 + 1 = 121
+    console.log(value);
+
+    value = 0o0001710;       // 968
+    console.log(value);
+}
+
+export function initNumberWithHex() {
+    let value = 0x00AF1;    // 10 * 16^2 + 15 * 16 + 1 = 2801
+    console.log(value);
+
+    value = 0X00AF0;        // 2800
+    console.log(value);
+}

tests/samples/string_type.ts

@@ -125,4 +125,9 @@ export function templateString() {
     console.log(`${obj.du} is undefined`);
 }
 
+export function stringContainHex() {
+    let s: string = "\x41B\x43";
+    console.log(s);
+}
+
 

tools/validate/wamr/validation.json

@@ -3446,6 +3446,11 @@
                 "name": "templateString",
                 "args": [],
                 "result": "1 world\n11 world\nHello world Hello world\nhello is not 10\nhi x\n1 and Hello is x\n10\nhi\nhi is x\n10 is 10\n0 is 0\n10 is 10\n1,2\n2\n1 is 1\n[object Object] is object\nhi is hi\n0 is 0\nundefined is undefined"
+            },
+            {
+                "name": "stringContainHex",
+                "args": [],
+                "result": "ABC"
             }
         ]
     },
@@ -3595,7 +3600,7 @@
             {
                 "name": "JSONTest3",
                 "args": [],
-                "result": "42\n{\"result\":true,\"count\":42}\n{\"''''\\n\\r\\t\\\\1\":\"2\\\\n\"}"
+                "result": "42\n{\"result\":true,\"count\":42}\n{\"''''\\n\\r\\t\\\\1\":\"2\\n\"}"
             }
         ]
     },
@@ -4167,5 +4172,25 @@
                 "result": "a\nb"
             }
         ]
+    },
+    {
+        "module": "decimalization",
+        "entries": [
+            {
+                "name": "initNumberWithBinary",
+                "args": [],
+                "result": "5\n10"
+            },
+            {
+                "name": "initNumberWithOctal",
+                "args": [],
+                "result": "121\n968"
+            },
+            {
+                "name": "initNumberWithHex",
+                "args": [],
+                "result": "2801\n2800"
+            }
+        ]
     }
 ]