/** Class constructor. */
public SwitchStatement() {
if (!SectionInfo.in() && !FunctionInfo.in())
throw new NslContextException(EnumSet.of(NslContext.Section, NslContext.Function), "switch");
int lineNo = ScriptParser.tokenizer.lineno();
ScriptParser.tokenizer.matchOrDie('(');
this.switchExpression = Expression.matchComplex();
ScriptParser.tokenizer.matchOrDie(')');
ScriptParser.tokenizer.matchOrDie('{');
// Set non-null values so that the block statement can contain break statements.
CodeInfo.getCurrent().setBreakLabel(RelativeJump.Zero);
this.statementList = new ArrayList<Statement>();
this.casesList = new ArrayList<SwitchCaseStatement>();
this.defaultCase = null;
// Get the statements including case statements.
while (true) {
if (ScriptParser.tokenizer.match("case")) {
Statement statement = new SwitchCaseStatement();
if (this.defaultCase != null)
throw new NslException(
"The \"default\" case in a \"switch\" statement must be the last case", true);
this.casesList.add((SwitchCaseStatement) statement);
this.statementList.add(statement);
} else if (ScriptParser.tokenizer.match("default")) {
this.defaultCase = new SwitchDefaultCaseStatement();
this.statementList.add(this.defaultCase);
} else {
Statement statement = Statement.match();
if (statement == null) break;
this.statementList.add(statement);
}
}
// No cases?
if (this.casesList.isEmpty())
throw new NslException(
"A \"switch\" statement must have at least one \"case\" statement", true);
// Validate switch cases for jump instructions.
if (this.switchExpression instanceof JumpExpression)
((JumpExpression) this.switchExpression).checkSwitchCases(this.casesList, lineNo);
// Check the last statement is a break statement.
boolean noBreak = true;
if (!this.statementList.isEmpty()) {
Statement last = this.statementList.get(this.statementList.size() - 1);
if (last instanceof BlockStatement) last = ((BlockStatement) last).getLast();
if (last instanceof BreakStatement) noBreak = false;
}
if (noBreak)
throw new NslException("A \"switch\" statement must end with a \"break\" statement", true);
CodeInfo.getCurrent().setBreakLabel(null);
ScriptParser.tokenizer.matchOrDie('}');
}
/**
* Class constructor.
*
* @param returns the number of values to return
*/
public GetErrorLevelInstruction(int returns) {
if (!SectionInfo.in() && !FunctionInfo.in())
throw new NslContextException(EnumSet.of(NslContext.Section, NslContext.Function), name);
if (returns != 1) throw new NslReturnValueException(name, 1);
ArrayList<Expression> paramsList = Expression.matchList();
if (!paramsList.isEmpty()) throw new NslArgumentException(name, 0);
}
/**
* Class constructor.
*
* @param returns the number of values to return
*/
public FlushINIInstruction(int returns) {
if (!SectionInfo.in() && !FunctionInfo.in())
throw new NslContextException(EnumSet.of(NslContext.Section, NslContext.Function), name);
if (returns > 0) throw new NslReturnValueException(name);
ArrayList<Expression> paramsList = Expression.matchList();
if (paramsList.size() != 1) throw new NslArgumentException(name, 1);
this.iniFile = paramsList.get(0);
}
/**
* Class constructor.
*
* @param returns the number of values to return
*/
public LockWindowInstruction(int returns) {
if (!SectionInfo.in() && !FunctionInfo.in())
throw new NslContextException(EnumSet.of(NslContext.Section, NslContext.Function), name);
if (returns > 0) throw new NslReturnValueException(name);
ArrayList<Expression> paramsList = Expression.matchList();
if (paramsList.size() != 1) throw new NslArgumentException(name, 1);
this.value = paramsList.get(0);
if (!ExpressionType.isString(this.value))
throw new NslArgumentException(name, 1, ExpressionType.String);
}