Class ExecutionContext
- java.lang.Object
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- org.apache.pdfbox.pdmodel.common.function.type4.ExecutionContext
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public class ExecutionContext extends java.lang.Object
Makes up the execution context, holding the available operators and the execution stack.
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Constructor Summary
Constructors Constructor Description ExecutionContext(Operators operatorSet)
Creates a new execution context.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Operators
getOperators()
Returns the operator set used by this execution context.java.util.Stack<java.lang.Object>
getStack()
Returns the stack used by this execution context.int
popInt()
Pops a value of type int from the stack.java.lang.Number
popNumber()
Pops a number (int or real) from the stack.float
popReal()
Pops a number from the stack and returns it as a real value.
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Field Detail
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operators
private final Operators operators
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stack
private final java.util.Stack<java.lang.Object> stack
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Constructor Detail
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ExecutionContext
public ExecutionContext(Operators operatorSet)
Creates a new execution context.- Parameters:
operatorSet
- the operator set
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Method Detail
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getStack
public java.util.Stack<java.lang.Object> getStack()
Returns the stack used by this execution context.- Returns:
- the stack
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getOperators
public Operators getOperators()
Returns the operator set used by this execution context.- Returns:
- the operator set
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popNumber
public java.lang.Number popNumber()
Pops a number (int or real) from the stack. If it's neither data type, a ClassCastException is thrown.- Returns:
- the number
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popInt
public int popInt()
Pops a value of type int from the stack. If the value is not of type int, a ClassCastException is thrown.- Returns:
- the int value
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popReal
public float popReal()
Pops a number from the stack and returns it as a real value. If the value is not of a numeric type, a ClassCastException is thrown.- Returns:
- the real value
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