Package com.tonic.analysis.source.ast

Class ASTUtils

  • public final class ASTUtils
extends Object
    Visitor-backed helpers for traversing and querying AST nodes.

    • Method Detail

      • forEachStatement

        public static void forEachStatement​(Statement root,
                                    Consumer<Statement> action)
        Walks every statement under a root in depth-first order.
        Parameters:
        root - statement to walk
        action - invoked once per visited statement

      • collect

        public static <T extends Statement> List<T> collect​(Statement root,
                                                    Class<T> type)
        Collects the statements under a root that are instances of one type.
        Type Parameters:
        T - statement type collected
        Parameters:
        root - statement to walk
        type - type to match
        Returns:
        the matching statements in visit order

      • filter

        public static List<Statement> filter​(Statement root,
                                     Predicate<Statement> pred)
        Collects the statements under a root that satisfy a predicate.
        Parameters:
        root - statement to walk
        pred - test applied to each visited statement
        Returns:
        the accepted statements in visit order

      • forEachExpression

        public static void forEachExpression​(Statement root,
                                     Consumer<Expression> action)
        Walks every expression under a statement tree in depth-first order.
        Parameters:
        root - statement to walk
        action - invoked once per visited expression

      • collectExpressions

        public static <T extends Expression> List<T> collectExpressions​(Statement root,
                                                                Class<T> type)
        Collects the expressions in a statement tree that are instances of one type.
        Type Parameters:
        T - expression type collected
        Parameters:
        root - statement to walk
        type - type to match
        Returns:
        the matching expressions in visit order

      • filterExpressions

        public static List<Expression> filterExpressions​(Statement root,
                                                 Predicate<Expression> pred)
        Collects the expressions in a statement tree that satisfy a predicate.
        Parameters:
        root - statement to walk
        pred - test applied to each visited expression
        Returns:
        the accepted expressions in visit order