public IElementType advance_layer1() throws IOException {
LexerState saved;
if (lexerStateStack.size() > 0) {
if (!isRecording) {
saved = lexerStateStack.firstElement();
lexerStateStack.removeElementAt(0);
setLexerState(saved);
if (isValidToken(saved.currentElement)) {
// if (saved.currentElement.equals(HackTypes.T_UNRESOLVED_OP) ||
// saved.currentElement.equals(HackTypes.T_LPAREN))
// parensBalance++;
//
// if (saved.currentElement.equals(HackTypes.T_RPAREN))
// parensBalance--;
lastToken = saved.currentElement;
}
return saved.currentElement;
} else if (lexerStackPtr > -1 && lexerStateStack.size() > (lexerStackPtr + 1)) {
lexerStackPtr++;
saved = lexerStateStack.get(lexerStackPtr);
setLexerState(saved);
if (isValidToken(saved.currentElement)) {
// if (saved.currentElement.equals(HackTypes.T_UNRESOLVED_OP) ||
// saved.currentElement.equals(HackTypes.T_LPAREN))
// parensBalance++;
//
// if (saved.currentElement.equals(HackTypes.T_RPAREN))
// parensBalance--;
lastToken = saved.currentElement;
}
return saved.currentElement;
} else {
lexerStackPtr++;
}
} else if (isRecording) {
lexerStackPtr++;
}
IElementType iElementType = next_token();
if (isValidToken(iElementType)) {
if (iElementType.equals(HackTypes.T_UNRESOLVED_OP) || iElementType.equals(HackTypes.T_LPAREN))
parensBalance++;
if (iElementType.equals(HackTypes.T_RPAREN)) parensBalance--;
// Type List Resolution Looking Back
if (isTypeListAvailable) {
if (iElementType.equals(HackTypes.T_UNRESOLVED_LT)) {
iElementType = HackTypes.T_TYPELIST_LT;
} else if (iElementType.equals(HackTypes.T_IS_NOT_EQUAL) && yytext().charAt(0) == '<') {
yypushback(1);
iElementType = HackTypes.T_TYPELIST_LT;
} else if (iElementType.equals(HackTypes.T_SR)) {
yypushback(1);
iElementType = HackTypes.T_TYPELIST_GT;
} else if (iElementType.equals(HackTypes.T_GREATER)) {
iElementType = HackTypes.T_TYPELIST_GT;
} else if (iElementType.equals(HackTypes.T_EQUAL)
|| iElementType.equals(HackTypes.T_UNRESOLVED_OP)
|| iElementType.equals(HackTypes.T_LBRACE)
|| iElementType.equals(HackTypes.T_RBRACE)
|| iElementType.equals(HackTypes.T_SEMICOLON)) {
isTypeListAvailable = false;
}
}
if (HackTypes.tsInTypeListActivate.contains(iElementType)) {
isTypeListAvailable = true;
}
}
if (isRecording) {
LexerState lexerState = getLexerState();
lexerState.currentElement = iElementType;
lexerStateStack.add(lexerState);
}
if (isValidToken(iElementType)) {
lastToken = iElementType;
}
return iElementType;
}
private IElementType resolveLParen() throws IOException {
LexerState saved;
LexerState savedLastRParen = null;
saved = getLexerState();
int myParensBalance = parensBalance - 1;
isRecording = true;
int myIdx = lexerStackPtr;
int variable = 0;
for (IElementType iElementType1 = advance_layer2(false);
iElementType1 != null;
iElementType1 = advance_layer2(false)) {
if (parensBalance < myParensBalance) break;
if ((myParensBalance + 1) == parensBalance) {
if (iElementType1.equals(HackTypes.T_VARIABLE)) variable++;
}
if (iElementType1.equals(HackTypes.T_LAMBDA_ARROW)) {
if (parensBalance != myParensBalance) {
break;
}
if (savedLastRParen != null) savedLastRParen.currentElement = HackTypes.T_LAMBDA_CP;
setLexerState(saved);
if (myIdx > -1) {
lexerStateStack.get(myIdx).currentElement = HackTypes.T_LAMBDA_OP;
lexerStackPtr = myIdx;
}
return HackTypes.T_LAMBDA_OP;
} else if (iElementType1.equals(HackTypes.T_LAMBDA_OP)) {
break;
} else if (savedLastRParen == null) {
if (iElementType1.equals(HackTypes.T_FUNCTION) && myParensBalance + 1 == parensBalance) {
break;
} else if (myParensBalance == parensBalance && iElementType1.equals(HackTypes.T_RPAREN)) {
if (variable == 0) {
if (!lastToken4Resolver.equals(HackTypes.T_UNRESOLVED_OP)) break;
variable = 0;
}
savedLastRParen = lexerStateStack.get(lexerStackPtr);
}
}
isRecording = true;
}
setLexerState(saved);
if (myIdx > -1) {
lexerStateStack.get(myIdx).currentElement = HackTypes.T_LPAREN;
lexerStackPtr = myIdx;
}
return HackTypes.T_LPAREN;
}
