Examples with ParentSoyNode com.google.template.soy.soytree.SoyNode.ParentSoyNode used on opensource projects

Example 1 with ParentSoyNode

use of com.google.template.soy.soytree.SoyNode.ParentSoyNode in project closure-templates by google.

the class GenJsCodeVisitor method visitChildren.

@Override
protected void visitChildren(ParentSoyNode<?> node) {
    // initialize the output var.
    if (node.numChildren() == 0 || !canInitOutputVarVisitor.exec(node.getChild(0))) {
        jsCodeBuilder.initOutputVarIfNecessary();
    }
    // For children that are computed by GenJsExprsVisitor, try to process as many of them as we can
    // before adding to outputVar.
    // 
    // output += 'a' + 'b';
    // is preferable to
    // output += 'a';
    // output += 'b';
    // This is because it is actually easier for the jscompiler to optimize.
    List<CodeChunk.WithValue> consecChunks = new ArrayList<>();
    for (SoyNode child : node.getChildren()) {
        if (isComputableAsJsExprsVisitor.exec(child)) {
            consecChunks.addAll(genJsExprsVisitor.exec(child));
        } else {
            if (!consecChunks.isEmpty()) {
                jsCodeBuilder.addChunksToOutputVar(consecChunks);
                consecChunks.clear();
            }
            visit(child);
        }
    }
    if (!consecChunks.isEmpty()) {
        jsCodeBuilder.addChunksToOutputVar(consecChunks);
        consecChunks.clear();
    }
}

Example 2 with ParentSoyNode

use of com.google.template.soy.soytree.SoyNode.ParentSoyNode in project closure-templates by google.

the class MsgFuncGenerator method collectVarNameListAndToPyExprMap.

/**
 * Private helper to process and collect all variables used within this msg node for code
 * generation.
 *
 * @return A Map populated with all the variables used with in this message node, using {@link
 *     MsgPlaceholderInitialNode#genBasePhName}.
 */
private Map<PyExpr, PyExpr> collectVarNameListAndToPyExprMap() {
    Map<PyExpr, PyExpr> nodePyVarToPyExprMap = new LinkedHashMap<>();
    for (Map.Entry<String, MsgSubstUnitNode> entry : msgNode.getVarNameToRepNodeMap().entrySet()) {
        MsgSubstUnitNode substUnitNode = entry.getValue();
        PyExpr substPyExpr = null;
        if (substUnitNode instanceof MsgPlaceholderNode) {
            SoyNode phInitialNode = ((AbstractParentSoyNode<?>) substUnitNode).getChild(0);
            if (phInitialNode instanceof PrintNode || phInitialNode instanceof CallNode || phInitialNode instanceof RawTextNode) {
                substPyExpr = PyExprUtils.concatPyExprs(genPyExprsVisitor.exec(phInitialNode)).toPyString();
            }
            // when the placeholder is generated by HTML tags
            if (phInitialNode instanceof MsgHtmlTagNode) {
                substPyExpr = PyExprUtils.concatPyExprs(genPyExprsVisitor.execOnChildren((ParentSoyNode<?>) phInitialNode)).toPyString();
            }
        } else if (substUnitNode instanceof MsgPluralNode) {
            // Translates {@link MsgPluralNode#pluralExpr} into a Python lookup expression.
            // Note that {@code pluralExpr} represents the soy expression of the {@code plural} attr,
            // i.e. the {@code $numDrafts} in {@code {plural $numDrafts}...{/plural}}.
            substPyExpr = translateToPyExprVisitor.exec(((MsgPluralNode) substUnitNode).getExpr());
        } else if (substUnitNode instanceof MsgSelectNode) {
            substPyExpr = translateToPyExprVisitor.exec(((MsgSelectNode) substUnitNode).getExpr());
        }
        if (substPyExpr != null) {
            nodePyVarToPyExprMap.put(new PyStringExpr("'" + entry.getKey() + "'"), substPyExpr);
        }
    }
    return nodePyVarToPyExprMap;
}

Example 3 with ParentSoyNode

use of com.google.template.soy.soytree.SoyNode.ParentSoyNode in project closure-templates by google.

the class CombineConsecutiveRawTextNodesPass method visit.

private void visit(ParentSoyNode<?> node) {
    // The raw text node at the beginning of the current sequence
    int start = -1;
    int lastNonEmptyRawTextNode = -1;
    int i = 0;
    for (; i < node.numChildren(); i++) {
        SoyNode child = node.getChild(i);
        if (child instanceof RawTextNode) {
            RawTextNode childAsRawText = (RawTextNode) child;
            if (start == -1) {
                // drop empty raw text nodes at the prefix
                if (childAsRawText.getRawText().isEmpty()) {
                    node.removeChild(i);
                    i--;
                } else {
                    // mark the beginning of a sequence of nonempty raw text
                    start = i;
                    lastNonEmptyRawTextNode = i;
                }
            } else {
                if (!childAsRawText.getRawText().isEmpty()) {
                    lastNonEmptyRawTextNode = i;
                }
            }
        } else {
            i = mergeRange(node, start, lastNonEmptyRawTextNode, i);
            // reset
            start = -1;
            if (child instanceof ParentSoyNode) {
                // recurse
                visit((ParentSoyNode<?>) child);
            }
        // else do nothing since it cannot contain raw text nodes
        }
    }
    mergeRange(node, start, lastNonEmptyRawTextNode, i);
}

Example 4 with ParentSoyNode

use of com.google.template.soy.soytree.SoyNode.ParentSoyNode in project closure-templates by google.

the class CombineConsecutiveRawTextNodesPass method mergeRange.

// There is no generic type we could give to ParentSoyNode that wouldn't require unchecked casts
// either here or in our caller.  This is safe however since we are only adding or removing
// RawTextNodes and if we can remove a RawTextNode, we can also add one.
@SuppressWarnings("unchecked")
private int mergeRange(ParentSoyNode<?> parent, int start, int lastNonEmptyRawTextNode, int end) {
    checkArgument(start < end);
    if (start == -1 || end == start + 1) {
        return end;
    }
    // general case, there are N rawtextnodes to merge where n > 1
    // merge all the nodes together, then drop all the raw text nodes from the end
    RawTextNode newNode = RawTextNode.concat((List<RawTextNode>) parent.getChildren().subList(start, lastNonEmptyRawTextNode + 1));
    ((ParentSoyNode) parent).replaceChild(start, newNode);
    for (int i = end - 1; i > start; i--) {
        parent.removeChild(i);
    }
    return start + 1;
}