@Nullable
private Pair<String, String> parseAttribute() {
ZenCodingToken token = nextToken();
if (!(token instanceof IdentifierToken)) {
return null;
}
final String name = ((IdentifierToken) token).getText();
myIndex++;
token = nextToken();
if (token != ZenCodingTokens.EQ) {
return new Pair<String, String>(name, "");
}
myIndex++;
final StringBuilder attrValueBuilder = new StringBuilder();
String value;
do {
token = nextToken();
value =
token != null && token == ZenCodingTokens.SHARP
? token.toString()
: getAttributeValueByToken(token);
if (value != null) {
attrValueBuilder.append(value);
myIndex++;
}
} while (value != null);
return new Pair<String, String>(name, attrValueBuilder.toString());
}
@SuppressWarnings("unchecked")
@NotNull
private List<Pair<String, String>> parseSelectors() {
final List<Pair<String, String>> result = new ArrayList<Pair<String, String>>();
int classAttrPosition = -1;
int idAttrPosition = -1;
final StringBuilder classAttrBuilder = new StringBuilder();
final StringBuilder idAttrBuilder = new StringBuilder();
while (true) {
final List<Pair<String, String>> attrList = parseSelector();
if (attrList == null) {
if (classAttrPosition != -1) {
result.set(
classAttrPosition, new Pair<String, String>(CLASS, classAttrBuilder.toString()));
}
if (idAttrPosition != -1) {
result.set(idAttrPosition, new Pair<String, String>(ID, idAttrBuilder.toString()));
}
return result;
}
for (Pair<String, String> attr : attrList) {
if (CLASS.equals(attr.first)) {
if (classAttrBuilder.length() > 0) {
classAttrBuilder.append(' ');
}
classAttrBuilder.append(attr.second);
if (classAttrPosition == -1) {
classAttrPosition = result.size();
result.add(attr);
}
} else if (ID.equals(attr.first)) {
if (idAttrBuilder.length() > 0) {
idAttrBuilder.append(' ');
}
idAttrBuilder.append(attr.second);
if (idAttrPosition == -1) {
idAttrPosition = result.size();
result.add(attr);
}
} else {
result.add(attr);
}
}
}
}
@Nullable
private static List<ZenCodingToken> lex(@NotNull String text) {
text += MARKER;
final List<ZenCodingToken> result = new ArrayList<ZenCodingToken>();
boolean inQuotes = false;
boolean inApostrophes = false;
int bracesStack = 0;
StringBuilder builder = new StringBuilder();
for (int i = 0; i < text.length(); i++) {
final char c = text.charAt(i);
if (inQuotes) {
builder.append(c);
if (c == '"') {
inQuotes = false;
result.add(new StringLiteralToken(builder.toString()));
builder = new StringBuilder();
}
continue;
}
if (inApostrophes) {
builder.append(c);
if (c == '\'') {
inApostrophes = false;
result.add(new StringLiteralToken(builder.toString()));
builder = new StringBuilder();
}
continue;
}
if (bracesStack > 0) {
builder.append(c);
if (c == '}') {
bracesStack--;
if (bracesStack == 0) {
result.add(new TextToken(builder.toString()));
builder = new StringBuilder();
}
} else if (c == '{') {
bracesStack++;
}
continue;
}
if (DELIMS.indexOf(c) < 0) {
builder.append(c);
} else {
// handle special case: ul+ template
if (c == '+' && (i == text.length() - 2 || text.charAt(i + 1) == ')')) {
builder.append(c);
continue;
}
if (builder.length() > 0) {
final String tokenText = builder.toString();
final int n = parseNonNegativeInt(tokenText);
if (n >= 0) {
result.add(new NumberToken(n));
} else {
result.add(new IdentifierToken(tokenText));
}
builder = new StringBuilder();
}
if (c == '"') {
inQuotes = true;
builder.append(c);
} else if (c == '\'') {
inApostrophes = true;
builder.append(c);
} else if (c == '{') {
bracesStack = 1;
builder.append(c);
} else if (c == '(') {
result.add(ZenCodingTokens.OPENING_R_BRACKET);
} else if (c == ')') {
result.add(ZenCodingTokens.CLOSING_R_BRACKET);
} else if (c == '[') {
result.add(ZenCodingTokens.OPENING_SQ_BRACKET);
} else if (c == ']') {
result.add(ZenCodingTokens.CLOSING_SQ_BRACKET);
} else if (c == '=') {
result.add(ZenCodingTokens.EQ);
} else if (c == '.') {
result.add(ZenCodingTokens.DOT);
} else if (c == '#') {
result.add(ZenCodingTokens.SHARP);
} else if (c == ',') {
result.add(ZenCodingTokens.COMMA);
} else if (c == ' ') {
result.add(ZenCodingTokens.SPACE);
} else if (c == '|') {
result.add(ZenCodingTokens.PIPE);
} else if (c != MARKER) {
result.add(new OperationToken(c));
}
}
}
if (bracesStack != 0 || inQuotes || inApostrophes) {
return null;
}
return result;
}