/**
* Assembles the source code.
*
* @param var the variable to assign the value to
*/
@Override
public void assemble(Register var) throws IOException {
Expression varOrString = AssembleExpression.getRegisterOrExpression(this.string);
if (this.maxLen != null) {
Expression varOrMaxLen = AssembleExpression.getRegisterOrExpression(this.maxLen);
if (this.startOffset != null) {
Expression varOrStartOffset = AssembleExpression.getRegisterOrExpression(this.startOffset);
ScriptParser.writeLine(
name + " " + var + " " + varOrString + " " + varOrMaxLen + " " + varOrStartOffset);
varOrStartOffset.setInUse(false);
} else {
ScriptParser.writeLine(name + " " + var + " " + varOrString + " " + varOrMaxLen);
}
varOrMaxLen.setInUse(false);
} else {
ScriptParser.writeLine(name + " " + var + " " + varOrString);
}
varOrString.setInUse(false);
}
/** Assembles the source code. */
@Override
public void assemble() throws IOException {
Expression varOrIniFile = AssembleExpression.getRegisterOrExpression(this.iniFile);
ScriptParser.writeLine(name + " " + varOrIniFile);
varOrIniFile.setInUse(false);
}
/**
* Assembles the source code.
*
* @throws IOException
*/
@Override
public void assemble() throws IOException {
// Do not assemble anything if there are no cases!
if (this.casesList.isEmpty()) return;
// Give each case a label.
for (SwitchCaseStatement statement : this.casesList)
statement.setLabel(LabelList.getCurrent().getNext());
if (this.defaultCase != null) this.defaultCase.setLabel(LabelList.getCurrent().getNext());
Label gotoEnd = LabelList.getCurrent().getNext();
Label gotoStart = LabelList.getCurrent().getNext();
// Go to the jump table which is assembled after the switch case labels and
// statements.
ScriptParser.writeLine("Goto " + gotoStart);
// Using "break;" inside a switch jumps to the end.
Label parentBreak = CodeInfo.getCurrent().setBreakLabel(gotoEnd);
// Assemble all the statements inside the switch { }. This includes the
// case labels.
for (Statement statement : this.statementList) statement.assemble();
// Restore the parent break label.
CodeInfo.getCurrent().setBreakLabel(parentBreak);
// Label at the top of the jump table.
gotoStart.write();
// Jump instructions can jump directly to the case labels.
if (this.switchExpression instanceof JumpExpression) {
((JumpExpression) this.switchExpression).assemble(this.casesList);
}
// Other expressions we just assemble them if required and compare their
// result.
else {
Expression varOrSwitchExpression =
AssembleExpression.getRegisterOrExpression(this.switchExpression);
for (SwitchCaseStatement caseStatement : this.casesList) {
// Type is an integer; use IntCmp.
if (caseStatement.getMatch().getType().equals(ExpressionType.Integer)) {
ScriptParser.writeLine(
String.format(
"IntCmp %s %s %s",
varOrSwitchExpression, caseStatement.getMatch(), caseStatement.getLabel()));
}
// Type is a string; use StrCmp or StrCmpS (if special `` quotes were
// used).
else {
ScriptParser.writeLine(
String.format(
"StrCmp%s %s %s %s",
caseStatement.getMatch().getType().equals(ExpressionType.StringSpecial)
? "S"
: "",
varOrSwitchExpression,
caseStatement.getMatch(),
caseStatement.getLabel()));
}
}
varOrSwitchExpression.setInUse(false);
}
// Default case jump.
if (this.defaultCase != null) ScriptParser.writeLine("Goto " + this.defaultCase.getLabel());
gotoEnd.write();
}