public class MinusExpression extends UnaryOperExpression
Constructor | Description |
---|---|
MinusExpression(Rule rule,
ParseNode token,
Expression operand) |
Modifier and Type | Method | Description |
---|---|---|
void |
compile(org.objectweb.asm.MethodVisitor mv,
CompileContext compileContext) |
|
Object |
interpret(HelperAdapter helper) |
evaluate the expression by interpreting the expression tree
|
Type |
typeCheck(Type expected) |
ensure that all type references in the expression and its component expressions
can be resolved, that the type of the expression is well-defined and that it is
compatible with the type expected in the context in which it occurs.
|
getPos, getType
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
convertOper, writeTo
getBindings, getTypeGroup, rebox, toString
bind, getOperand
public MinusExpression(Rule rule, ParseNode token, Expression operand)
public Type typeCheck(Type expected) throws TypeException
Expression
typeCheck
in class Expression
expected
- the type expected for the expression in the contxet in which it occurs. this
may be void but should not be undefined at the point where type checking is performed.TypeException
- if a type check failure occurspublic Object interpret(HelperAdapter helper) throws ExecuteException
Expression
interpret
in class Expression
helper
- an execution context associated with the rule which contains a map of
current bindings for rule variables and another map of their declared types both of which
are indexed by variable name. This includes entries for the helper (name "-1"), the
recipient if the trigger method is not static (name "0") and the trigger method arguments
(names "1", ...)ExecuteException
- if an error occurs during executionpublic void compile(org.objectweb.asm.MethodVisitor mv, CompileContext compileContext) throws CompileException
compile
in class RuleElement
CompileException
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