private CommandTextInfo parseCommandText(ErrorReporter errorReporter) {
String commandTextWithoutPhnameAttr = this.commandText;
String commandText =
commandTextWithoutPhnameAttr
+ ((userSuppliedPlaceholderName != null)
? " phname=\"" + userSuppliedPlaceholderName + "\""
: "");
// Handle callee name not listed as an attribute.
Matcher ncnMatcher = NONATTRIBUTE_CALLEE_NAME.matcher(commandTextWithoutPhnameAttr);
String delCalleeName;
if (ncnMatcher.find()) {
delCalleeName = ncnMatcher.group(1);
if (!BaseUtils.isDottedIdentifier(delCalleeName)) {
errorReporter.report(sourceLocation, INVALID_DELEGATE_NAME, delCalleeName);
}
commandTextWithoutPhnameAttr =
commandTextWithoutPhnameAttr.substring(ncnMatcher.end()).trim();
} else {
delCalleeName = null;
errorReporter.report(sourceLocation, MISSING_CALLEE_NAME, commandText);
}
Map<String, String> attributes =
ATTRIBUTES_PARSER.parse(commandTextWithoutPhnameAttr, errorReporter, sourceLocation);
String variantExprText = attributes.get("variant");
ExprRootNode delCalleeVariantExpr;
if (variantExprText == null) {
delCalleeVariantExpr = null;
} else {
ExprNode expr =
new ExpressionParser(variantExprText, sourceLocation, errorReporter).parseExpression();
// If the variant is a fixed string, do a sanity check.
if (expr instanceof StringNode) {
String fixedVariantStr = ((StringNode) expr).getValue();
if (!BaseUtils.isIdentifier(fixedVariantStr)) {
errorReporter.report(sourceLocation, INVALID_VARIANT_EXPRESSION, variantExprText);
}
}
delCalleeVariantExpr = new ExprRootNode(expr);
}
DataAttribute dataAttrInfo =
parseDataAttributeHelper(attributes.get("data"), sourceLocation, errorReporter);
String allowemptydefaultAttr = attributes.get("allowemptydefault");
Boolean allowsEmptyDefault =
(allowemptydefaultAttr == null) ? null : allowemptydefaultAttr.equals("true");
return new CommandTextInfo(
commandText,
delCalleeName,
delCalleeVariantExpr,
allowsEmptyDefault,
dataAttrInfo,
userSuppliedPlaceholderName);
}
@Override
public String genBasePhName() {
if (userSuppliedPlaceholderName != null) {
return BaseUtils.convertToUpperUnderscore(userSuppliedPlaceholderName);
}
boolean isEndTag;
String baseLcTagName;
if (lcTagName.startsWith("/")) {
isEndTag = true;
baseLcTagName = lcTagName.substring(1);
} else {
isEndTag = false;
baseLcTagName = lcTagName;
}
String basePlaceholderName =
LC_TAG_NAME_TO_PLACEHOLDER_NAME_MAP.containsKey(baseLcTagName)
? LC_TAG_NAME_TO_PLACEHOLDER_NAME_MAP.get(baseLcTagName)
: baseLcTagName;
if (isEndTag) {
basePlaceholderName = "end_" + basePlaceholderName;
} else if (!isSelfEnding) {
basePlaceholderName = "start_" + basePlaceholderName;
}
return basePlaceholderName.toUpperCase();
}
/**
* Parses a 'requirecss' attribute value (for a Soy file or a template).
*
* @param requirecssAttr The 'requirecss' attribute value to parse.
* @return A list of required CSS namespaces parsed from the given attribute value.
*/
static ImmutableList<String> parseRequirecssAttr(
@Nullable String requirecssAttr, SourceLocation srcLoc) {
if (requirecssAttr == null) {
return ImmutableList.of();
}
String[] namespaces = requirecssAttr.trim().split("\\s*,\\s*");
for (String namespace : namespaces) {
if (!BaseUtils.isDottedIdentifier(namespace)) {
throw LegacyInternalSyntaxException.createWithMetaInfo(
"Invalid required CSS namespace name \"" + namespace + "\".", srcLoc);
}
}
return ImmutableList.copyOf(namespaces);
}
@Nullable
private String computePlaceholderName(ErrorReporter errorReporter) {
List<String> names = new ArrayList<>();
ImmutableList.Builder<StandaloneNode> transformedChildren = new ImmutableList.Builder<>();
for (StandaloneNode child : children) {
transformedChildren.add(extractPlaceholderName(child, names));
}
children = transformedChildren.build();
for (String name : names) {
if (!BaseUtils.isIdentifier(name)) {
errorReporter.report(sourceLocation, INVALID_PHNAME_ATTRIBUTE);
}
}
if (names.size() > 1) {
errorReporter.report(sourceLocation, MULTIPLE_PHNAME_ATTRIBUTES);
}
return Iterables.getFirst(names, null);
}
private CommandTextInfo buildCommandText() {
Preconditions.checkArgument(BaseUtils.isDottedIdentifier(delCalleeName));
String commandText = "";
commandText += delCalleeName;
if (dataAttribute.isPassingAllData()) {
commandText += " data=\"all\"";
} else if (dataAttribute.isPassingData()) {
assert dataAttribute.dataExpr() != null; // suppress warnings
commandText += " data=\"" + dataAttribute.dataExpr().toSourceString() + '"';
}
if (userSuppliedPlaceholderName != null) {
commandText += " phname=\"" + userSuppliedPlaceholderName + '"';
}
return new CommandTextInfo(
commandText,
delCalleeName,
delCalleeVariantExpr,
allowEmptyDefault,
dataAttribute,
userSuppliedPlaceholderName);
}