911 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			911 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
| "use strict";
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| 
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| Object.defineProperty(exports, "__esModule", {
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|   value: true
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| });
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| exports.print = print;
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| 
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| var _ast = require("@webassemblyjs/ast");
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| 
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| var _long = _interopRequireDefault(require("@xtuc/long"));
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| 
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| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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| 
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| function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
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| 
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| function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
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| 
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| function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }
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| 
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| var compact = false;
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| var space = " ";
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| 
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| var quote = function quote(str) {
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|   return "\"".concat(str, "\"");
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| };
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| 
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| function indent(nb) {
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|   return Array(nb).fill(space + space).join("");
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| } // TODO(sven): allow arbitrary ast nodes
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| 
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| 
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| function print(n) {
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|   if (n.type === "Program") {
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|     return printProgram(n, 0);
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|   } else {
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|     throw new Error("Unsupported node in print of type: " + String(n.type));
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|   }
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| }
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| 
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| function printProgram(n, depth) {
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|   return n.body.reduce(function (acc, child) {
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|     if (child.type === "Module") {
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|       acc += printModule(child, depth + 1);
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|     }
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| 
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|     if (child.type === "Func") {
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|       acc += printFunc(child, depth + 1);
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|     }
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| 
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|     if (child.type === "BlockComment") {
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|       acc += printBlockComment(child);
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|     }
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| 
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|     if (child.type === "LeadingComment") {
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|       acc += printLeadingComment(child);
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|     }
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| 
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|     if (compact === false) {
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|       acc += "\n";
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|     }
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| 
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|     return acc;
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|   }, "");
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| }
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| 
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| function printTypeInstruction(n) {
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|   var out = "";
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|   out += "(";
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|   out += "type";
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|   out += space;
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| 
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|   if (n.id != null) {
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|     out += printIndex(n.id);
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|     out += space;
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|   }
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| 
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|   out += "(";
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|   out += "func";
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|   n.functype.params.forEach(function (param) {
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|     out += space;
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|     out += "(";
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|     out += "param";
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|     out += space;
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|     out += printFuncParam(param);
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|     out += ")";
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|   });
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|   n.functype.results.forEach(function (result) {
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|     out += space;
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|     out += "(";
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|     out += "result";
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|     out += space;
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|     out += result;
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|     out += ")";
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|   });
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|   out += ")"; // func
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| 
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|   out += ")";
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|   return out;
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| }
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| 
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| function printModule(n, depth) {
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|   var out = "(";
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|   out += "module";
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| 
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|   if (typeof n.id === "string") {
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|     out += space;
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|     out += n.id;
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|   }
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| 
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|   if (compact === false) {
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|     out += "\n";
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|   } else {
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|     out += space;
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|   }
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| 
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|   n.fields.forEach(function (field) {
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|     if (compact === false) {
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|       out += indent(depth);
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|     }
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| 
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|     switch (field.type) {
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|       case "Func":
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|         {
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|           out += printFunc(field, depth + 1);
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|           break;
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|         }
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| 
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|       case "TypeInstruction":
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|         {
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|           out += printTypeInstruction(field);
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|           break;
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|         }
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| 
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|       case "Table":
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|         {
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|           out += printTable(field);
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|           break;
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|         }
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| 
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|       case "Global":
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|         {
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|           out += printGlobal(field, depth + 1);
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|           break;
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|         }
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| 
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|       case "ModuleExport":
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|         {
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|           out += printModuleExport(field);
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|           break;
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|         }
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| 
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|       case "ModuleImport":
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|         {
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|           out += printModuleImport(field);
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|           break;
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|         }
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| 
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|       case "Memory":
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|         {
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|           out += printMemory(field);
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|           break;
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|         }
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| 
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|       case "BlockComment":
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|         {
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|           out += printBlockComment(field);
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|           break;
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|         }
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| 
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|       case "LeadingComment":
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|         {
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|           out += printLeadingComment(field);
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|           break;
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|         }
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| 
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|       case "Start":
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|         {
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|           out += printStart(field);
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|           break;
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|         }
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| 
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|       case "Elem":
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|         {
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|           out += printElem(field, depth);
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|           break;
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|         }
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| 
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|       case "Data":
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|         {
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|           out += printData(field, depth);
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|           break;
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|         }
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| 
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|       default:
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|         throw new Error("Unsupported node in printModule: " + String(field.type));
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|     }
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| 
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|     if (compact === false) {
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|       out += "\n";
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|     }
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|   });
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|   out += ")";
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|   return out;
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| }
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| 
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| function printData(n, depth) {
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|   var out = "";
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|   out += "(";
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|   out += "data";
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|   out += space;
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|   out += printIndex(n.memoryIndex);
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|   out += space;
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|   out += printInstruction(n.offset, depth);
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|   out += space;
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|   out += '"';
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|   n.init.values.forEach(function (byte) {
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|     // Avoid non-displayable characters
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|     if (byte <= 31 || byte == 34 || byte == 92 || byte >= 127) {
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|       out += "\\";
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|       out += ("00" + byte.toString(16)).substr(-2);
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|     } else if (byte > 255) {
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|       throw new Error("Unsupported byte in data segment: " + byte);
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|     } else {
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|       out += String.fromCharCode(byte);
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|     }
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|   });
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|   out += '"';
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|   out += ")";
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|   return out;
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| }
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| 
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| function printElem(n, depth) {
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|   var out = "";
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|   out += "(";
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|   out += "elem";
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|   out += space;
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|   out += printIndex(n.table);
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| 
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|   var _n$offset = _slicedToArray(n.offset, 1),
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|       firstOffset = _n$offset[0];
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| 
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|   out += space;
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|   out += "(";
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|   out += "offset";
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|   out += space;
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|   out += printInstruction(firstOffset, depth);
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|   out += ")";
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|   n.funcs.forEach(function (func) {
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|     out += space;
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|     out += printIndex(func);
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|   });
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|   out += ")";
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|   return out;
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| }
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| 
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| function printStart(n) {
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|   var out = "";
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|   out += "(";
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|   out += "start";
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|   out += space;
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|   out += printIndex(n.index);
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|   out += ")";
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|   return out;
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| }
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| 
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| function printLeadingComment(n) {
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|   // Don't print leading comments in compact mode
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|   if (compact === true) {
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|     return "";
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|   }
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| 
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|   var out = "";
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|   out += ";;";
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|   out += n.value;
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|   out += "\n";
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|   return out;
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| }
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| 
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| function printBlockComment(n) {
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|   // Don't print block comments in compact mode
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|   if (compact === true) {
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|     return "";
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|   }
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| 
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|   var out = "";
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|   out += "(;";
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|   out += n.value;
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|   out += ";)";
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|   out += "\n";
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|   return out;
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| }
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| 
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| function printSignature(n) {
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|   var out = "";
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|   n.params.forEach(function (param) {
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|     out += space;
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|     out += "(";
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|     out += "param";
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|     out += space;
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|     out += printFuncParam(param);
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|     out += ")";
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|   });
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|   n.results.forEach(function (result) {
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|     out += space;
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|     out += "(";
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|     out += "result";
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|     out += space;
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|     out += result;
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|     out += ")";
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|   });
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|   return out;
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| }
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| 
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| function printModuleImportDescr(n) {
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|   var out = "";
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| 
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|   if (n.type === "FuncImportDescr") {
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|     out += "(";
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|     out += "func";
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| 
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|     if ((0, _ast.isAnonymous)(n.id) === false) {
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|       out += space;
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|       out += printIdentifier(n.id);
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|     }
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| 
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|     out += printSignature(n.signature);
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|     out += ")";
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|   }
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| 
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|   if (n.type === "GlobalType") {
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|     out += "(";
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|     out += "global";
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|     out += space;
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|     out += printGlobalType(n);
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|     out += ")";
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|   }
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| 
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|   if (n.type === "Table") {
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|     out += printTable(n);
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|   }
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| 
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|   return out;
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| }
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| 
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| function printModuleImport(n) {
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|   var out = "";
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|   out += "(";
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|   out += "import";
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|   out += space;
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|   out += quote(n.module);
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|   out += space;
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|   out += quote(n.name);
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|   out += space;
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|   out += printModuleImportDescr(n.descr);
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|   out += ")";
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|   return out;
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| }
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| 
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| function printGlobalType(n) {
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|   var out = "";
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| 
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|   if (n.mutability === "var") {
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|     out += "(";
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|     out += "mut";
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|     out += space;
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|     out += n.valtype;
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|     out += ")";
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|   } else {
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|     out += n.valtype;
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|   }
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| 
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|   return out;
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| }
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| 
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| function printGlobal(n, depth) {
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|   var out = "";
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|   out += "(";
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|   out += "global";
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|   out += space;
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| 
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|   if (n.name != null && (0, _ast.isAnonymous)(n.name) === false) {
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|     out += printIdentifier(n.name);
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|     out += space;
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|   }
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| 
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|   out += printGlobalType(n.globalType);
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|   out += space;
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|   n.init.forEach(function (i) {
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|     out += printInstruction(i, depth + 1);
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|   });
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|   out += ")";
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|   return out;
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| }
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| 
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| function printTable(n) {
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|   var out = "";
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|   out += "(";
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|   out += "table";
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|   out += space;
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| 
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|   if (n.name != null && (0, _ast.isAnonymous)(n.name) === false) {
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|     out += printIdentifier(n.name);
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|     out += space;
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|   }
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| 
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|   out += printLimit(n.limits);
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|   out += space;
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|   out += n.elementType;
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|   out += ")";
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|   return out;
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| }
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| 
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| function printFuncParam(n) {
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|   var out = "";
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| 
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|   if (typeof n.id === "string") {
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|     out += "$" + n.id;
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|     out += space;
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|   }
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| 
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|   out += n.valtype;
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|   return out;
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| }
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| 
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| function printFunc(n, depth) {
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|   var out = "";
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|   out += "(";
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|   out += "func";
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| 
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|   if (n.name != null) {
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|     if (n.name.type === "Identifier" && (0, _ast.isAnonymous)(n.name) === false) {
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|       out += space;
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|       out += printIdentifier(n.name);
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|     }
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|   }
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| 
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|   if (n.signature.type === "Signature") {
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|     out += printSignature(n.signature);
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|   } else {
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|     var index = n.signature;
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|     out += space;
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|     out += "(";
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|     out += "type";
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|     out += space;
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|     out += printIndex(index);
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|     out += ")";
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|   }
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| 
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|   if (n.body.length > 0) {
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|     // func is empty since we ignore the default end instruction
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|     if (n.body.length === 1 && n.body[0].id === "end") {
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|       out += ")";
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|       return out;
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|     }
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| 
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|     if (compact === false) {
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|       out += "\n";
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|     }
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| 
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|     n.body.forEach(function (i) {
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|       if (i.id !== "end") {
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|         out += indent(depth);
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|         out += printInstruction(i, depth);
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| 
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|         if (compact === false) {
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|           out += "\n";
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|         }
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|       }
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|     });
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|     out += indent(depth - 1) + ")";
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|   } else {
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|     out += ")";
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|   }
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| 
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|   return out;
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| }
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| 
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| function printInstruction(n, depth) {
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|   switch (n.type) {
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|     case "Instr":
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|       // $FlowIgnore
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|       return printGenericInstruction(n, depth + 1);
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| 
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|     case "BlockInstruction":
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|       // $FlowIgnore
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|       return printBlockInstruction(n, depth + 1);
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| 
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|     case "IfInstruction":
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|       // $FlowIgnore
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|       return printIfInstruction(n, depth + 1);
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| 
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|     case "CallInstruction":
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|       // $FlowIgnore
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|       return printCallInstruction(n, depth + 1);
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| 
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|     case "CallIndirectInstruction":
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|       // $FlowIgnore
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|       return printCallIndirectIntruction(n, depth + 1);
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| 
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|     case "LoopInstruction":
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|       // $FlowIgnore
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|       return printLoopInstruction(n, depth + 1);
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| 
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|     default:
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|       throw new Error("Unsupported instruction: " + JSON.stringify(n.type));
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|   }
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| }
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| 
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| function printCallIndirectIntruction(n, depth) {
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|   var out = "";
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|   out += "(";
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|   out += "call_indirect";
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| 
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|   if (n.signature.type === "Signature") {
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|     out += printSignature(n.signature);
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|   } else if (n.signature.type === "Identifier") {
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|     out += space;
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|     out += "(";
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|     out += "type";
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|     out += space;
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|     out += printIdentifier(n.signature);
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|     out += ")";
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|   } else {
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|     throw new Error("CallIndirectInstruction: unsupported signature " + JSON.stringify(n.signature.type));
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|   }
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| 
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|   out += space;
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| 
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|   if (n.intrs != null) {
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|     // $FlowIgnore
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|     n.intrs.forEach(function (i, index) {
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|       // $FlowIgnore
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|       out += printInstruction(i, depth + 1); // $FlowIgnore
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| 
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|       if (index !== n.intrs.length - 1) {
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|         out += space;
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|       }
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|     });
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|   }
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| 
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|   out += ")";
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|   return out;
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| }
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| 
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| function printLoopInstruction(n, depth) {
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|   var out = "";
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|   out += "(";
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|   out += "loop";
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| 
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|   if (n.label != null && (0, _ast.isAnonymous)(n.label) === false) {
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|     out += space;
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|     out += printIdentifier(n.label);
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|   }
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| 
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|   if (typeof n.resulttype === "string") {
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|     out += space;
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|     out += "(";
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|     out += "result";
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|     out += space;
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|     out += n.resulttype;
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|     out += ")";
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|   }
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| 
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|   if (n.instr.length > 0) {
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|     n.instr.forEach(function (e) {
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|       if (compact === false) {
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|         out += "\n";
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|       }
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| 
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|       out += indent(depth);
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|       out += printInstruction(e, depth + 1);
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|     });
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| 
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|     if (compact === false) {
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|       out += "\n";
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|       out += indent(depth - 1);
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|     }
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|   }
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| 
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|   out += ")";
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|   return out;
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| }
 | |
| 
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| function printCallInstruction(n, depth) {
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|   var out = "";
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|   out += "(";
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|   out += "call";
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|   out += space;
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|   out += printIndex(n.index);
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| 
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|   if (_typeof(n.instrArgs) === "object") {
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|     // $FlowIgnore
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|     n.instrArgs.forEach(function (arg) {
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|       out += space;
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|       out += printFuncInstructionArg(arg, depth + 1);
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|     });
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|   }
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| 
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|   out += ")";
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|   return out;
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| }
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| 
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| function printIfInstruction(n, depth) {
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|   var out = "";
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|   out += "(";
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|   out += "if";
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| 
 | |
|   if (n.testLabel != null && (0, _ast.isAnonymous)(n.testLabel) === false) {
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|     out += space;
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|     out += printIdentifier(n.testLabel);
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|   }
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| 
 | |
|   if (typeof n.result === "string") {
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|     out += space;
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|     out += "(";
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|     out += "result";
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|     out += space;
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|     out += n.result;
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|     out += ")";
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|   }
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| 
 | |
|   if (n.test.length > 0) {
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|     out += space;
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|     n.test.forEach(function (i) {
 | |
|       out += printInstruction(i, depth + 1);
 | |
|     });
 | |
|   }
 | |
| 
 | |
|   if (n.consequent.length > 0) {
 | |
|     if (compact === false) {
 | |
|       out += "\n";
 | |
|     }
 | |
| 
 | |
|     out += indent(depth);
 | |
|     out += "(";
 | |
|     out += "then";
 | |
|     depth++;
 | |
|     n.consequent.forEach(function (i) {
 | |
|       if (compact === false) {
 | |
|         out += "\n";
 | |
|       }
 | |
| 
 | |
|       out += indent(depth);
 | |
|       out += printInstruction(i, depth + 1);
 | |
|     });
 | |
|     depth--;
 | |
| 
 | |
|     if (compact === false) {
 | |
|       out += "\n";
 | |
|       out += indent(depth);
 | |
|     }
 | |
| 
 | |
|     out += ")";
 | |
|   } else {
 | |
|     if (compact === false) {
 | |
|       out += "\n";
 | |
|       out += indent(depth);
 | |
|     }
 | |
| 
 | |
|     out += "(";
 | |
|     out += "then";
 | |
|     out += ")";
 | |
|   }
 | |
| 
 | |
|   if (n.alternate.length > 0) {
 | |
|     if (compact === false) {
 | |
|       out += "\n";
 | |
|     }
 | |
| 
 | |
|     out += indent(depth);
 | |
|     out += "(";
 | |
|     out += "else";
 | |
|     depth++;
 | |
|     n.alternate.forEach(function (i) {
 | |
|       if (compact === false) {
 | |
|         out += "\n";
 | |
|       }
 | |
| 
 | |
|       out += indent(depth);
 | |
|       out += printInstruction(i, depth + 1);
 | |
|     });
 | |
|     depth--;
 | |
| 
 | |
|     if (compact === false) {
 | |
|       out += "\n";
 | |
|       out += indent(depth);
 | |
|     }
 | |
| 
 | |
|     out += ")";
 | |
|   } else {
 | |
|     if (compact === false) {
 | |
|       out += "\n";
 | |
|       out += indent(depth);
 | |
|     }
 | |
| 
 | |
|     out += "(";
 | |
|     out += "else";
 | |
|     out += ")";
 | |
|   }
 | |
| 
 | |
|   if (compact === false) {
 | |
|     out += "\n";
 | |
|     out += indent(depth - 1);
 | |
|   }
 | |
| 
 | |
|   out += ")";
 | |
|   return out;
 | |
| }
 | |
| 
 | |
| function printBlockInstruction(n, depth) {
 | |
|   var out = "";
 | |
|   out += "(";
 | |
|   out += "block";
 | |
| 
 | |
|   if (n.label != null && (0, _ast.isAnonymous)(n.label) === false) {
 | |
|     out += space;
 | |
|     out += printIdentifier(n.label);
 | |
|   }
 | |
| 
 | |
|   if (typeof n.result === "string") {
 | |
|     out += space;
 | |
|     out += "(";
 | |
|     out += "result";
 | |
|     out += space;
 | |
|     out += n.result;
 | |
|     out += ")";
 | |
|   }
 | |
| 
 | |
|   if (n.instr.length > 0) {
 | |
|     n.instr.forEach(function (i) {
 | |
|       if (compact === false) {
 | |
|         out += "\n";
 | |
|       }
 | |
| 
 | |
|       out += indent(depth);
 | |
|       out += printInstruction(i, depth + 1);
 | |
|     });
 | |
| 
 | |
|     if (compact === false) {
 | |
|       out += "\n";
 | |
|     }
 | |
| 
 | |
|     out += indent(depth - 1);
 | |
|     out += ")";
 | |
|   } else {
 | |
|     out += ")";
 | |
|   }
 | |
| 
 | |
|   return out;
 | |
| }
 | |
| 
 | |
| function printGenericInstruction(n, depth) {
 | |
|   var out = "";
 | |
|   out += "(";
 | |
| 
 | |
|   if (typeof n.object === "string") {
 | |
|     out += n.object;
 | |
|     out += ".";
 | |
|   }
 | |
| 
 | |
|   out += n.id;
 | |
|   n.args.forEach(function (arg) {
 | |
|     out += space;
 | |
|     out += printFuncInstructionArg(arg, depth + 1);
 | |
|   });
 | |
|   out += ")";
 | |
|   return out;
 | |
| }
 | |
| 
 | |
| function printLongNumberLiteral(n) {
 | |
|   if (typeof n.raw === "string") {
 | |
|     return n.raw;
 | |
|   }
 | |
| 
 | |
|   var _n$value = n.value,
 | |
|       low = _n$value.low,
 | |
|       high = _n$value.high;
 | |
|   var v = new _long.default(low, high);
 | |
|   return v.toString();
 | |
| }
 | |
| 
 | |
| function printFloatLiteral(n) {
 | |
|   if (typeof n.raw === "string") {
 | |
|     return n.raw;
 | |
|   }
 | |
| 
 | |
|   return String(n.value);
 | |
| }
 | |
| 
 | |
| function printFuncInstructionArg(n, depth) {
 | |
|   var out = "";
 | |
| 
 | |
|   if (n.type === "NumberLiteral") {
 | |
|     out += printNumberLiteral(n);
 | |
|   }
 | |
| 
 | |
|   if (n.type === "LongNumberLiteral") {
 | |
|     out += printLongNumberLiteral(n);
 | |
|   }
 | |
| 
 | |
|   if (n.type === "Identifier" && (0, _ast.isAnonymous)(n) === false) {
 | |
|     out += printIdentifier(n);
 | |
|   }
 | |
| 
 | |
|   if (n.type === "ValtypeLiteral") {
 | |
|     out += n.name;
 | |
|   }
 | |
| 
 | |
|   if (n.type === "FloatLiteral") {
 | |
|     out += printFloatLiteral(n);
 | |
|   }
 | |
| 
 | |
|   if ((0, _ast.isInstruction)(n)) {
 | |
|     out += printInstruction(n, depth + 1);
 | |
|   }
 | |
| 
 | |
|   return out;
 | |
| }
 | |
| 
 | |
| function printNumberLiteral(n) {
 | |
|   if (typeof n.raw === "string") {
 | |
|     return n.raw;
 | |
|   }
 | |
| 
 | |
|   return String(n.value);
 | |
| }
 | |
| 
 | |
| function printModuleExport(n) {
 | |
|   var out = "";
 | |
|   out += "(";
 | |
|   out += "export";
 | |
|   out += space;
 | |
|   out += quote(n.name);
 | |
| 
 | |
|   if (n.descr.exportType === "Func") {
 | |
|     out += space;
 | |
|     out += "(";
 | |
|     out += "func";
 | |
|     out += space;
 | |
|     out += printIndex(n.descr.id);
 | |
|     out += ")";
 | |
|   } else if (n.descr.exportType === "Global") {
 | |
|     out += space;
 | |
|     out += "(";
 | |
|     out += "global";
 | |
|     out += space;
 | |
|     out += printIndex(n.descr.id);
 | |
|     out += ")";
 | |
|   } else if (n.descr.exportType === "Memory" || n.descr.exportType === "Mem") {
 | |
|     out += space;
 | |
|     out += "(";
 | |
|     out += "memory";
 | |
|     out += space;
 | |
|     out += printIndex(n.descr.id);
 | |
|     out += ")";
 | |
|   } else if (n.descr.exportType === "Table") {
 | |
|     out += space;
 | |
|     out += "(";
 | |
|     out += "table";
 | |
|     out += space;
 | |
|     out += printIndex(n.descr.id);
 | |
|     out += ")";
 | |
|   } else {
 | |
|     throw new Error("printModuleExport: unknown type: " + n.descr.exportType);
 | |
|   }
 | |
| 
 | |
|   out += ")";
 | |
|   return out;
 | |
| }
 | |
| 
 | |
| function printIdentifier(n) {
 | |
|   return "$" + n.value;
 | |
| }
 | |
| 
 | |
| function printIndex(n) {
 | |
|   if (n.type === "Identifier") {
 | |
|     return printIdentifier(n);
 | |
|   } else if (n.type === "NumberLiteral") {
 | |
|     return printNumberLiteral(n);
 | |
|   } else {
 | |
|     throw new Error("Unsupported index: " + n.type);
 | |
|   }
 | |
| }
 | |
| 
 | |
| function printMemory(n) {
 | |
|   var out = "";
 | |
|   out += "(";
 | |
|   out += "memory";
 | |
| 
 | |
|   if (n.id != null) {
 | |
|     out += space;
 | |
|     out += printIndex(n.id);
 | |
|     out += space;
 | |
|   }
 | |
| 
 | |
|   out += printLimit(n.limits);
 | |
|   out += ")";
 | |
|   return out;
 | |
| }
 | |
| 
 | |
| function printLimit(n) {
 | |
|   var out = "";
 | |
|   out += n.min + "";
 | |
| 
 | |
|   if (n.max != null) {
 | |
|     out += space;
 | |
|     out += String(n.max);
 | |
|   }
 | |
| 
 | |
|   return out;
 | |
| } |