Package org.codehaus.groovy.transform.stc

Class TypeCheckingContext

java.lang.Object
org.codehaus.groovy.transform.stc.TypeCheckingContext
public class TypeCheckingContext extends Object

  • Field Details

    • visitor

      protected final StaticTypeCheckingVisitor visitor

    • source

      protected SourceUnit source

    • compilationUnit

      protected CompilationUnit compilationUnit

    • errorCollectors

      protected final LinkedList<ErrorCollector> errorCollectors

    • temporaryIfBranchTypeInformation

      protected Stack<Map<Object,List<ClassNode>>> temporaryIfBranchTypeInformation
      Stores information which is only valid in the "if" branch of an if-then-else statement. This is used when the if condition expression makes use of an instanceof check

    • delegationMetadata

      protected org.codehaus.groovy.transform.stc.DelegationMetadata delegationMetadata
      Whenever a method using a closure as argument (typically, "with") is detected, this list is updated with the receiver type of the with method.

    • isInStaticContext

      protected boolean isInStaticContext

    • lastImplicitItType

      protected ClassNode lastImplicitItType
      The type of the last encountered "it" implicit parameter.

    • methodsToBeVisited

      protected Set<MethodNode> methodsToBeVisited

    • ifElseForWhileAssignmentTracker

      protected Map<VariableExpression,List<ClassNode>> ifElseForWhileAssignmentTracker
      This field is used to track assignments in if/else branches, for loops and while loops. For example, in the following code: if (cond) { x = 1 } else { x = '123' } the inferred type of x after the if/else statement should be the LUB of int and String.

    • blockStatements2Types

      @Deprecated protected final IdentityHashMap<BlockStatement,Map<VariableExpression,List<ClassNode>>> blockStatements2Types
      Deprecated.
      This field used for type derivation Check IfStatement matched pattern: Object var1; if (!(var1 instanceOf Runnable)){ return } // Here var1 instance of Runnable

    • alreadyVisitedMethods

      protected Set<MethodNode> alreadyVisitedMethods

    • secondPassExpressions

      protected final LinkedHashSet<org.codehaus.groovy.transform.stc.SecondPassExpression> secondPassExpressions
      Some expressions need to be visited twice, because type information may be insufficient at some point. For example, for closure shared variables, we need a first pass to collect every type which is assigned to a closure shared variable, then a second pass to ensure that every method call on such a variable is made on a LUB.

    • closureSharedVariablesAssignmentTypes

      protected final Map<VariableExpression,List<ClassNode>> closureSharedVariablesAssignmentTypes
      A map used to store every type used in closure shared variable assignments. In a second pass, we will compute the LUB of each type and check that method calls on those variables are valid.

    • controlStructureVariables

      protected Map<Parameter,ClassNode> controlStructureVariables

    • reportedErrors

      protected final Set<Long> reportedErrors

    • enclosingClassNodes

      protected final LinkedList<ClassNode> enclosingClassNodes

    • enclosingMethods

      protected final LinkedList<MethodNode> enclosingMethods

    • enclosingMethodCalls

      protected final LinkedList<Expression> enclosingMethodCalls

    • enclosingBlocks

      @Deprecated protected final LinkedList<BlockStatement> enclosingBlocks
      Deprecated.

    • switchStatements

      protected final LinkedList<SwitchStatement> switchStatements

    • enclosingClosures

      protected final LinkedList<TypeCheckingContext.EnclosingClosure> enclosingClosures

    • enclosingBinaryExpressions

      protected final LinkedList<BinaryExpression> enclosingBinaryExpressions

  • Constructor Details

  • Method Details

    • getSource

      public SourceUnit getSource()

    • getCompilationUnit

      public CompilationUnit getCompilationUnit()

    • setCompilationUnit

      public void setCompilationUnit(CompilationUnit compilationUnit)

    • pushErrorCollector

      public ErrorCollector pushErrorCollector()

    • pushErrorCollector

      public void pushErrorCollector(ErrorCollector collector)

    • popErrorCollector

      public ErrorCollector popErrorCollector()

    • getErrorCollector

      public ErrorCollector getErrorCollector()

    • getErrorCollectors

      public List<ErrorCollector> getErrorCollectors()

    • pushTemporaryTypeInfo

      public void pushTemporaryTypeInfo()

    • popTemporaryTypeInfo

      public void popTemporaryTypeInfo()

    • pushEnclosingBinaryExpression

      public void pushEnclosingBinaryExpression(BinaryExpression binaryExpression)
      Pushes a binary expression into the binary expression stack.

    • popEnclosingBinaryExpression

      public BinaryExpression popEnclosingBinaryExpression()
      Pops a binary expression from the binary expression stack.

    • getEnclosingBinaryExpression

      public BinaryExpression getEnclosingBinaryExpression()
      Returns the binary expression which is on the top of the stack, or null if there's no such element.

    • getEnclosingBinaryExpressionStack

      public List<BinaryExpression> getEnclosingBinaryExpressionStack()
      Returns the current stack of enclosing binary expressions. The first element is the top of the stack.

    • isTargetOfEnclosingAssignment

      public boolean isTargetOfEnclosingAssignment(Expression expression)

    • pushEnclosingClosureExpression

      public void pushEnclosingClosureExpression(ClosureExpression closureExpression)
      Pushes a closure expression into the closure expression stack.

    • popEnclosingClosure

      public TypeCheckingContext.EnclosingClosure popEnclosingClosure()
      Pops a closure expression from the closure expression stack.

    • getEnclosingClosure

      public TypeCheckingContext.EnclosingClosure getEnclosingClosure()
      Returns the closure expression which is on the top of the stack, or null if there's no such element.

    • getEnclosingClosureStack

      public List<TypeCheckingContext.EnclosingClosure> getEnclosingClosureStack()
      Returns the current stack of enclosing closure expressions. The first element is the top of the stack.

    • pushEnclosingClassNode

      public void pushEnclosingClassNode(ClassNode classNode)
      Pushes a class into the classes stack.

    • popEnclosingClassNode

      public ClassNode popEnclosingClassNode()
      Pops a class from the enclosing classes stack.

    • getEnclosingClassNode

      public ClassNode getEnclosingClassNode()
      Returns the class node which is on the top of the stack, or null if there's no such element.

    • getEnclosingClassNodes

      public List<ClassNode> getEnclosingClassNodes()
      Returns the current stack of enclosing classes. The first element is the top of the stack, that is to say the currently visited class.

    • pushEnclosingMethod

      public void pushEnclosingMethod(MethodNode methodNode)
      Pushes a method into the method stack.

    • popEnclosingMethod

      public MethodNode popEnclosingMethod()
      Pops a method from the enclosing methods stack.

    • getEnclosingMethod

      public MethodNode getEnclosingMethod()
      Returns the method node which is on the top of the stack, or null if there's no such element.

    • getEnclosingMethods

      public List<MethodNode> getEnclosingMethods()
      Returns the current stack of enclosing methods. The first element is the top of the stack, that is to say the last visited method.

    • pushEnclosingMethodCall

      public void pushEnclosingMethodCall(Expression call)
      Pushes a method call into the method call stack.
      Parameters:
      call - the call expression to be pushed, either a MethodCallExpression or a StaticMethodCallExpression

    • popEnclosingMethodCall

      public Expression popEnclosingMethodCall()
      Pops a method call from the enclosing method call stack.

    • getEnclosingMethodCall

      public Expression getEnclosingMethodCall()
      Returns the method call which is on the top of the stack, or null if there's no such element.

    • getEnclosingMethodCalls

      public List<Expression> getEnclosingMethodCalls()
      Returns the current stack of enclosing method calls. The first element is the top of the stack, that is to say the currently visited method call.

    • pushEnclosingSwitchStatement

      public void pushEnclosingSwitchStatement(SwitchStatement switchStatement)
      Pushes a switch statement into the switch statement stack.

    • popEnclosingSwitchStatement

      public SwitchStatement popEnclosingSwitchStatement()
      Pops a switch statement from the enclosing switch statements stack.

    • getEnclosingSwitchStatement

      public SwitchStatement getEnclosingSwitchStatement()
      Returns the switch statement which is on the top of the stack, or null if there's no such element.

    • getEnclosingSwitchStatements

      public List<SwitchStatement> getEnclosingSwitchStatements()
      Returns the current stack of enclosing switch statements. The first element is the top of the stack, that is to say the last visited switch statement.