mirror of
https://github.com/simon987/Much-Assembly-Required-Frontend.git
synced 2025-04-19 10:36:42 +00:00
440 lines
13 KiB
JavaScript
440 lines
13 KiB
JavaScript
OPERAND_INVALID = -1;
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OPERAND_REG = 0;
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OPERAND_MEM_IMM = 1;
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OPERAND_MEM_REG = 2;
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OPERAND_IMM = 3;
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//Remove default syntax checker
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editor = ace.edit("editor");
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editor.session.setOption("useWorker", false);
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//Remove message
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editor.$blockScrolling = Infinity;
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var MarParserSyntax = {
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singleCharRegisters : [
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'a', 'b', 'c', 'd', 'x', 'y'
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],
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doubleCharRegisters : [
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'bp', 'sp'
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],
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doubleOperandInstructions : [
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'mov', 'add', 'sub', 'and', 'or', 'test', 'cmp', 'shl', 'shr', 'xor', 'rol', 'ror', 'sal', 'sar',
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'xchg', 'rcl', 'rcr'
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],
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singleOperandInstructions : [
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'push', 'mul', 'pop', 'div', 'neg', 'call', 'jnz', 'jg', 'jl', 'jge', 'jle', 'hwi', 'hwq', 'jz',
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'js', 'jns', 'ret', 'jmp', 'not', 'jc', 'jnc', 'jo', 'jno'
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],
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zeroOperandInstructions : [
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'ret', 'brk', 'nop'
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]
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};
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var MarParserRegExp = {
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allRegisters : new RegExp('^(' +
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MarParserSyntax.singleCharRegisters.concat(MarParserSyntax.doubleCharRegisters).join('|')
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+ ')$'),
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singleCharRegisters : new RegExp('^(' + MarParserSyntax.singleCharRegisters.join('|') + ')$'),
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doubleCharRegisters : new RegExp('^(' + MarParserSyntax.doubleCharRegisters.join('|') + ')$'),
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allInstructions : new RegExp('\\b(?:' +
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MarParserSyntax.doubleOperandInstructions.concat(MarParserSyntax.singleOperandInstructions).concat(MarParserSyntax.zeroOperandInstructions).join('|')
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+ ')\\b'),
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doubleOperandInstructions : new RegExp('\\b(?:' + MarParserSyntax.doubleOperandInstructions.join('|') + ')\\b'),
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singleOperandInstructions : new RegExp('\\b(?:' + MarParserSyntax.singleOperandInstructions.join('|') + ')\\b'),
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zeroOperandInstructions : new RegExp('\\b(?:' + MarParserSyntax.zeroOperandInstructions.join('|') + ')\\b'),
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};
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function removeComment(line) {
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if (line.indexOf(";") !== -1) {
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return line.substring(0, line.indexOf(";"));
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} else {
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return line;
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}
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}
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function checkForLabel(line, result) {
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line = removeComment(line);
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var match;
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if ((match = /\b\w*\b:/.exec(line)) !== null) {
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result.labels.push(match[0].substring(0, match[0].length - 1));
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}
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}
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function checkForSegmentDeclaration(line) {
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var tokens = getTokens(line);
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return tokens[0] !== undefined && (tokens[0].toLowerCase() === ".data" || tokens[0].toLowerCase() === ".text");
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}
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function checkForEQUInstruction(line, result, currentLine) {
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var tokens = getTokens(line);
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if (line.toLowerCase().indexOf(" equ ") !== -1 || tokens[1] !== undefined && tokens[1].toLowerCase() === "equ") {
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//Save as a label
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var num = Number(tokens[2]);
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if (!isNaN(num) && num === Math.floor(num)) {
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result.labels.push(tokens[0]);
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return true;
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} else {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Usage: constant_name EQU immediate_value",
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type: "error"
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});
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return true;
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}
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} else {
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return false;
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}
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}
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function getTokens(line) {
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var tokens = line.split(/\s+/);
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for (var i = 0; i < tokens.length; i++) {
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if (tokens[i] === "") {
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tokens.splice(i, 1);
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}
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}
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return tokens;
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}
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function removeLabel(line) {
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return line.replace(/\b\w*\b:/, "");
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}
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function checkForORGInstruction(line, result, currentLine) {
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line = removeComment(line);
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line = removeLabel(line);
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//Split string
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var tokens = getTokens(line);
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var mnemonic = tokens[0];
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if (mnemonic !== undefined && mnemonic.toLowerCase() === "org") {
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console.log(tokens);
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if (tokens.length > 1) {
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var num = Number(tokens[1]);
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if (!isNaN(num) && num === Math.floor(num)) {
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return true;
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} else {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Invalid operand: " + tokens[1],
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type: "error"
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});
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return true
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}
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}
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} else {
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return false;
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}
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}
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function parseDWInstruction(line, result, currentLine) {
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line = line.trim();
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if (line.substr(0, 2).toLowerCase() === "dw") {
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var values = line.substr(2, line.length).split(/,(?=(?:[^"]*"[^"]*")*[^"]*$)/, -1);
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for (var i = 0; i < values.length; i++) {
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values[i] = values[i].trim();
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var tokens = getTokens(values[i]);
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if (tokens.length === 2 && getOperandType(tokens[0], result) === OPERAND_IMM &&
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tokens[1].toLowerCase().startsWith("dup(") && tokens[1].endsWith(")") &&
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getOperandType(tokens[1].substring(4, tokens[1].indexOf(")")), result) === OPERAND_IMM) {
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// console.log("DUp");
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} else if (values[i].startsWith("\"") && values[i].endsWith("\"")) {
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//Handle string
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} else if (getOperandType(values[i], result) === OPERAND_IMM) {
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// console.log("is Imm " + values[i]);
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} else {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Usage: DW IMM, IMM ...",
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type: "error"
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});
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return true;
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}
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}
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return true;
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} else {
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return false;
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}
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}
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function getOperandType(text, result) {
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text = text.trim();
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if (text === "") {
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return OPERAND_INVALID;
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}
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//Check IMM
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if (!isNaN(Number(text)) && Number(text) === Math.floor(Number(text)) && text.indexOf("o") === -1
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&& text.indexOf("0e") !== 0) {
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return OPERAND_IMM;
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}
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//Check REG
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if (MarParserRegExp.allRegisters.test(text.toLowerCase())) {
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return OPERAND_REG;
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}
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//Check Label
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for (i = 0; i < result.labels.length; i++) {
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if (text === result.labels[i]) {
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return OPERAND_IMM;
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}
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}
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//Check MEM_*
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if (text.startsWith("[") && text.endsWith("]")) {
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text = text.replace("[", "").replace("]", "");
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//Check MEM_IMM
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if (!isNaN(Number(text)) && Number(text) === Math.floor(Number(text))) {
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return OPERAND_MEM_IMM;
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}
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//Check MEM_Label
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for (var i = 0; i < result.labels.length; i++) {
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if (text === result.labels[i]) {
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return OPERAND_MEM_IMM;
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}
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}
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//Check for MEM_REG (+ x)
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var expr = "";
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if (MarParserRegExp.doubleCharRegisters.test(text.toLowerCase().substring(0, 2).toLowerCase())) {
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//Starts with 2-char register
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expr = text.substring(2);
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} else if (MarParserRegExp.singleCharRegisters.test(text.toLowerCase().substring(0, 1).toLowerCase())) {
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//Starts with 1-char register
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expr = text.substring(1);
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} else {
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return OPERAND_INVALID;
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}
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if (expr.replace(/\s+/g, '') === "") {
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//No displacement specified
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return OPERAND_MEM_REG;
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}
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//Remove white space
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expr = expr.replace(/\s+/g, '');
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//expr should now look like this: '+1' '-3' '+0x02' '+myLabel'
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//Check for label
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for (i = 0; i < result.labels.length; i++) {
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if (expr.substring(1) === result.labels[i]) {
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return OPERAND_MEM_REG;
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}
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}
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//Check for number
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if (!isNaN(Number(expr)) && Number(expr) === Math.floor(Number(expr))) {
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return OPERAND_MEM_REG;
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}
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}
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return OPERAND_INVALID;
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}
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function parseInstruction(line, result, currentLine) {
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line = removeComment(line);
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line = removeLabel(line);
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var tokens = getTokens(line);
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var mnemonic = tokens[0];
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if (mnemonic === undefined || mnemonic === "") {
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return; //Line is empty
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}
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if (!parseDWInstruction(line, result, currentLine)) {
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if (MarParserRegExp.allInstructions.test(mnemonic.toLowerCase())) {
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if (line.indexOf(",") !== -1) {
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//2 Operands
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var strO1 = line.substring(line.indexOf(mnemonic) + mnemonic.length, line.indexOf(','));
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var strO2 = line.substring(line.indexOf(',') + 1).trim();
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//Validate operand number
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if (!MarParserRegExp.doubleOperandInstructions.test(mnemonic.toLowerCase())) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: mnemonic + " instruction with 2 operands is illegal",
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type: "error"
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});
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return;
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}
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//Validate operand type
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var o1Type = getOperandType(strO1, result);
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var o2Type = getOperandType(strO2, result);
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if (o1Type === OPERAND_INVALID) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Invalid operand: " + strO1,
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type: "error"
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});
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return;
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}
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if (o2Type === OPERAND_INVALID) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Invalid operand: " + strO2,
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type: "error"
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});
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return;
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}
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//Check for illegal operand combos:
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if (o1Type === OPERAND_IMM) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Destination operand can't be an immediate value",
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type: "error"
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});
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}
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} else if (tokens.length > 1) {
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//1 Operand
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strO1 = line.substring(line.indexOf(mnemonic) + mnemonic.length).trim();
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//Validate operand number
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if (!MarParserRegExp.singleOperandInstructions.test(mnemonic.toLowerCase())) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: mnemonic + " instruction with 1 operand is illegal",
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type: "error"
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});
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return;
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}
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//Validate operand type
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if (getOperandType(strO1, result) === OPERAND_INVALID) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Invalid operand: " + strO1,
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type: "error"
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});
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}
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} else {
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//No operand
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if (!MarParserRegExp.zeroOperandInstructions.test(mnemonic.toLowerCase())) {
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//Validate operand number
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: mnemonic + " instruction with no operand is illegal",
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type: "error"
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});
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}
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}
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} else {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Unknown mnemonic: " + mnemonic,
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type: "error"
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});
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}
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}
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}
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function parse() {
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var text = ace.edit("editor").getValue();
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var lines = text.split("\n");
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var result = {
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labels: [],
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annotations: []
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};
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//Pass 1 of 2: Save label names
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for (var currentLine = 0; currentLine < lines.length; currentLine++) {
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checkForLabel(lines[currentLine], result);
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}
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//Pass 2 of 2: Check instructions
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for (currentLine = 0; currentLine < lines.length; currentLine++) {
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if (!checkForSegmentDeclaration(lines[currentLine]) &&
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!checkForEQUInstruction(lines[currentLine], result, currentLine) &&
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!checkForORGInstruction(lines[currentLine], result, currentLine)) {
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parseInstruction(lines[currentLine], result, currentLine);
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}
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}
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//Set icons
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editor.getSession().setAnnotations(result.annotations);
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}
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function gameClick() {
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document.getElementById("editorBtns").setAttribute("style", "display: none");
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document.getElementById("gameBtns").setAttribute("style", "");
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}
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function editorClick() {
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document.getElementById("editorBtns").setAttribute("style", "");
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document.getElementById("gameBtns").setAttribute("style", "display: none");
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}
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editor.on("change", parse);
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