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add some helper methods to LighterAST

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This commit is contained in:
peter
2016-07-21 18:54:28 +02:00
parent cd3e872465
commit aa812cce53
1 changed files with 25 additions and 0 deletions
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platform/core-api/src/com/intellij/lang/LighterAST.java
+25
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@@ -15,7 +15,11 @@
*/
package com.intellij.lang;
import com.intellij.openapi.util.Condition;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.TokenSet;
import com.intellij.util.CharTable;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
@@ -46,4 +50,25 @@ public abstract class LighterAST {
public abstract List<LighterASTNode> getChildren(@NotNull final LighterASTNode parent);
public abstract void disposeChildren(@NotNull List<LighterASTNode> children);
@Nullable
public LighterASTNode findChildByType(@Nullable LighterASTNode node, @NotNull final IElementType type) {
if (node == null) return null;
return ContainerUtil.find(getChildren(node), new Condition<LighterASTNode>() {
@Override
public boolean value(LighterASTNode node) {
return node.getTokenType() == type;
}
});
}
@NotNull
public List<LighterASTNode> findChildrenByType(@NotNull LighterASTNode node, @NotNull final TokenSet types) {
return ContainerUtil.filter(getChildren(node), new Condition<LighterASTNode>() {
@Override
public boolean value(LighterASTNode node) {
return types.contains(node.getTokenType());
}
});
}
}