simon987/Much-Assembly-Required
1
0
Fork 0
mirror of https://github.com/simon987/Much-Assembly-Required.git synced 2025-04-19 02:36:41 +00:00
Code Issues Projects Releases Wiki Activity

Refactor GetOperandType

Browse Source
This commit is contained in:
JJ 2019-10-06 20:31:18 -04:00
parent 638c5b3bb3
commit 7667cbfe0d
1 changed files with 53 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

115
Server/src/main/resources/static/js/editor.js vendored
View File

@ -175,6 +175,53 @@ function parseDWInstruction(line, result, currentLine) {
}
}
function isLabel(text, result) {
for (i = 0; i < result.labels.length; i++) {
if (text === result.labels[i]) {
return true;
}
}
}
function isImmediateOp(text, result) {
return (isLabel(text, result)
|| !isNaN(Number(text))
&& Number(text) === Math.floor(Number(text))
&& text.indexOf("o") === -1
&& text.indexOf("0e") !== 0);
}
function isMemoryOp(text) {
return text.startsWith("[") && text.endsWith("]");
}
function isRegisterOp(text) {
return new RegExp('^(a|b|c|d|x|y|bp|sp)$').test(text.toLowerCase());
}
function getOffsetOperandType(text) {
var offset = "";
if (isRegisterOp(text.substring(0, 2))) {
offset = text.substring(2);
} else if (isRegisterOp(text.substring(0, 1))) {
offset = text.substring(1);
} else {
return OPERAND_INVALID;
}
//Remove either ONE '+' or ONE '-' else the operand is invalid
//Credit: https://github.com/KevinRamharak
offset = offset.replace(/[+-]/, '');
offset = offset.trim();
if(offset === "" || isImmediateOp(offset, result)){
return OPERAND_MEM_REG;
}
return OPERAND_INVALID;
}
function getOperandType(text, result) {
@ -183,81 +230,25 @@ function getOperandType(text, result) {
return OPERAND_INVALID;
}
//Check IMM
if (!isNaN(Number(text)) && Number(text) === Math.floor(Number(text)) && text.indexOf("o") === -1
&& text.indexOf("0e") !== 0) {
if (isImmediateOp(text, result)) {
return OPERAND_IMM;
}
//Check REG
if (new RegExp('^(a|b|c|d|x|y|bp|sp)$').test(text.toLowerCase())) {
if (isRegisterOp(text)) {
return OPERAND_REG;
}
//Check Label
for (i = 0; i < result.labels.length; i++) {
if (text === result.labels[i]) {
return OPERAND_IMM;
}
}
//Check MEM_*
if (text.startsWith("[") && text.endsWith("]")) {
if (isMemoryOp(text)) {
text = text.replace("[", "").replace("]", "");
//Check MEM_IMM
if (!isNaN(Number(text)) && Number(text) === Math.floor(Number(text))) {
if(isImmediateOp(text, result)){
return OPERAND_MEM_IMM;
}
//Check MEM_Label
for (var i = 0; i < result.labels.length; i++) {
if (text === result.labels[i]) {
return OPERAND_MEM_IMM;
}
}
//Check for MEM_REG (+ x)
var expr = "";
if (new RegExp('^(bp|sp)$').test(text.toLowerCase().substring(0, 2).toLowerCase())) {
//Starts with 2-char register
expr = text.substring(2);
} else if (new RegExp('^(a|b|c|d|x|y)$').test(text.toLowerCase().substring(0, 1).toLowerCase())) {
//Starts with 1-char register
expr = text.substring(1);
} else {
return OPERAND_INVALID;
}
if (expr.replace(/\s+/g, '') === "") {
//No displacement specified
return OPERAND_MEM_REG;
}
//Remove white space
expr = expr.replace(/\s+/g, '');
//expr should now look like this: '+1' '-3' '+0x02' '+myLabel'
//Check for label
for (i = 0; i < result.labels.length; i++) {
if (expr.substring(1) === result.labels[i]) {
return OPERAND_MEM_REG;
}
}
//Remove either ONE '+' or ONE '-' else the operand is invalid
//Credit: https://github.com/KevinRamharak
expr = expr.replace(/[+-]/, '');
//Check for number
if (!isNaN(Number(expr)) && Number(expr) === Math.floor(Number(expr))) {
return OPERAND_MEM_REG;
}
return getOffsetOperandType(text);
}
return OPERAND_INVALID;
}
function parseInstruction(line, result, currentLine) {