wyal.util

Class Interpreter

java.lang.Object

wyal.util.Interpreter

public class Interpreter
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Interpreter.Environment
static class	Interpreter.Record
class	Interpreter.Result A result simply catches the result of a given boolean expression, and the environment which lead to that result.
static class	Interpreter.UndefinedException

Constructor Summary

Constructors

Constructor and Description
Interpreter(Domain domain, wybs.lang.NameResolver resolver, TypeInvariantExtractor extractor)

Method Summary

Modifier and Type	Method and Description
protected void	checkTypeInvariants(wybs.util.AbstractCompilationUnit.Tuple<WyalFile.VariableDeclaration> vars, Interpreter.Environment environment)
protected boolean	equals(Object lhs, Object rhs)
protected boolean	equalsArray(Object[] lhs, Object[] rhs)
protected boolean	equalsRecord(Interpreter.Record lhs, Interpreter.Record rhs)
Interpreter.Result	evaluate(WyalFile.Declaration.Assert a)
protected Object	evaluateAddition(WyalFile.Expr.Addition expr, Interpreter.Environment environment)
protected Object	evaluateArrayAccess(WyalFile.Expr.ArrayAccess expr, Interpreter.Environment environment)
protected Object	evaluateArrayGenerator(WyalFile.Expr.ArrayGenerator expr, Interpreter.Environment environment)
protected Object	evaluateArrayInitialiser(WyalFile.Expr.ArrayInitialiser expr, Interpreter.Environment environment)
protected Object	evaluateArrayLength(WyalFile.Expr.ArrayLength expr, Interpreter.Environment environment)
protected Object	evaluateArrayUpdate(WyalFile.Expr.ArrayUpdate expr, Interpreter.Environment environment)
protected Interpreter.Result	evaluateBlock(WyalFile.Stmt.Block block, Interpreter.Environment environment)
protected Interpreter.Result	evaluateCaseOf(WyalFile.Stmt.CaseOf stmt, Interpreter.Environment environment)
protected Object	evaluateConstant(WyalFile.Expr.Constant expr, Interpreter.Environment environment)
protected Object	evaluateDivision(WyalFile.Expr.Division expr, Interpreter.Environment environment)
protected boolean	evaluateEqual(WyalFile.Expr.Equal expr, Interpreter.Environment environment)
protected boolean	evaluateExistentialQuantifier(WyalFile.Expr.ExistentialQuantifier stmt, Interpreter.Environment environment)
protected Interpreter.Result	evaluateExists(WyalFile.Stmt.ExistentialQuantifier stmt, Interpreter.Environment environment)
protected Object	evaluateExpression(WyalFile.Expr expr, Interpreter.Environment environment)
protected Interpreter.Result	evaluateForAll(WyalFile.Stmt.UniversalQuantifier stmt, Interpreter.Environment environment)
protected boolean	evaluateGreaterThan(WyalFile.Expr.GreaterThan expr, Interpreter.Environment environment)
protected boolean	evaluateGreaterThanOrEqual(WyalFile.Expr.GreaterThanOrEqual expr, Interpreter.Environment environment)
protected Interpreter.Result	evaluateIfThen(WyalFile.Stmt.IfThen stmt, Interpreter.Environment environment)
protected Object	evaluateInvoke(WyalFile.Expr.Invoke expr, Interpreter.Environment environment)
protected Object	evaluateIs(WyalFile.Expr.Is expr, Interpreter.Environment environment)
protected boolean	evaluateLessThan(WyalFile.Expr.LessThan expr, Interpreter.Environment environment)
protected boolean	evaluateLessThanOrEqual(WyalFile.Expr.LessThanOrEqual expr, Interpreter.Environment environment)
protected boolean	evaluateLogicalAnd(WyalFile.Expr.LogicalAnd conjunct, Interpreter.Environment environment)
protected boolean	evaluateLogicalIff(WyalFile.Expr.LogicalIff expr, Interpreter.Environment environment)
protected boolean	evaluateLogicalImplication(WyalFile.Expr.LogicalImplication expr, Interpreter.Environment environment)
protected boolean	evaluateLogicalNot(WyalFile.Expr.LogicalNot expr, Interpreter.Environment environment)
protected boolean	evaluateLogicalOr(WyalFile.Expr.LogicalOr disjunct, Interpreter.Environment environment)
protected Object	evaluateMultiplication(WyalFile.Expr.Multiplication expr, Interpreter.Environment environment)
protected Object	evaluateNegation(WyalFile.Expr.Negation expr, Interpreter.Environment environment)
protected boolean	evaluateNotEqual(WyalFile.Expr.NotEqual expr, Interpreter.Environment environment)
protected Object	evaluateRecordAccess(WyalFile.Expr.RecordAccess expr, Interpreter.Environment environment)
protected Object	evaluateRecordInitialiser(WyalFile.Expr.RecordInitialiser expr, Interpreter.Environment environment)
protected Object	evaluateRecordUpdate(WyalFile.Expr.RecordUpdate expr, Interpreter.Environment environment)
protected Interpreter.Result	evaluateStatement(WyalFile.Stmt stmt, Interpreter.Environment environment)
protected Object	evaluateSubtraction(WyalFile.Expr.Subtraction expr, Interpreter.Environment environment)
protected boolean	evaluateUniversalQuantifier(WyalFile.Expr.UniversalQuantifier stmt, Interpreter.Environment environment)
protected Object	evaluateVariable(WyalFile.Expr.VariableAccess expr, Interpreter.Environment environment)
protected boolean	isInstance(Object value, WyalFile.Type type)
protected WyalFile.Declaration.Named	resolve(WyalFile.Expr.Invoke ivk)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Interpreter

public Interpreter(Domain domain,
                   wybs.lang.NameResolver resolver,
                   TypeInvariantExtractor extractor)

Method Detail

evaluate

public Interpreter.Result evaluate(WyalFile.Declaration.Assert a)
                            throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateBlock

protected Interpreter.Result evaluateBlock(WyalFile.Stmt.Block block,
                                           Interpreter.Environment environment)
                                    throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateStatement

protected Interpreter.Result evaluateStatement(WyalFile.Stmt stmt,
                                               Interpreter.Environment environment)
                                        throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateIfThen

protected Interpreter.Result evaluateIfThen(WyalFile.Stmt.IfThen stmt,
                                            Interpreter.Environment environment)
                                     throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateCaseOf

protected Interpreter.Result evaluateCaseOf(WyalFile.Stmt.CaseOf stmt,
                                            Interpreter.Environment environment)
                                     throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateExists

protected Interpreter.Result evaluateExists(WyalFile.Stmt.ExistentialQuantifier stmt,
                                            Interpreter.Environment environment)

evaluateForAll

protected Interpreter.Result evaluateForAll(WyalFile.Stmt.UniversalQuantifier stmt,
                                            Interpreter.Environment environment)

evaluateExpression

protected Object evaluateExpression(WyalFile.Expr expr,
                                    Interpreter.Environment environment)
                             throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateConstant

protected Object evaluateConstant(WyalFile.Expr.Constant expr,
                                  Interpreter.Environment environment)

evaluateVariable

protected Object evaluateVariable(WyalFile.Expr.VariableAccess expr,
                                  Interpreter.Environment environment)

evaluateInvoke

protected Object evaluateInvoke(WyalFile.Expr.Invoke expr,
                                Interpreter.Environment environment)
                         throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

resolve

protected WyalFile.Declaration.Named resolve(WyalFile.Expr.Invoke ivk)

evaluateLogicalAnd

protected boolean evaluateLogicalAnd(WyalFile.Expr.LogicalAnd conjunct,
                                     Interpreter.Environment environment)
                              throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateLogicalOr

protected boolean evaluateLogicalOr(WyalFile.Expr.LogicalOr disjunct,
                                    Interpreter.Environment environment)
                             throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateLogicalNot

protected boolean evaluateLogicalNot(WyalFile.Expr.LogicalNot expr,
                                     Interpreter.Environment environment)
                              throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateLogicalImplication

protected boolean evaluateLogicalImplication(WyalFile.Expr.LogicalImplication expr,
                                             Interpreter.Environment environment)
                                      throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateLogicalIff

protected boolean evaluateLogicalIff(WyalFile.Expr.LogicalIff expr,
                                     Interpreter.Environment environment)
                              throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateExistentialQuantifier

protected boolean evaluateExistentialQuantifier(WyalFile.Expr.ExistentialQuantifier stmt,
                                                Interpreter.Environment environment)

evaluateUniversalQuantifier

protected boolean evaluateUniversalQuantifier(WyalFile.Expr.UniversalQuantifier stmt,
                                              Interpreter.Environment environment)

evaluateEqual

protected boolean evaluateEqual(WyalFile.Expr.Equal expr,
                                Interpreter.Environment environment)
                         throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateNotEqual

protected boolean evaluateNotEqual(WyalFile.Expr.NotEqual expr,
                                   Interpreter.Environment environment)
                            throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

equals

protected boolean equals(Object lhs,
                         Object rhs)

equalsArray

protected boolean equalsArray(Object[] lhs,
                              Object[] rhs)

equalsRecord

protected boolean equalsRecord(Interpreter.Record lhs,
                               Interpreter.Record rhs)

evaluateLessThan

protected boolean evaluateLessThan(WyalFile.Expr.LessThan expr,
                                   Interpreter.Environment environment)
                            throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateLessThanOrEqual

protected boolean evaluateLessThanOrEqual(WyalFile.Expr.LessThanOrEqual expr,
                                          Interpreter.Environment environment)
                                   throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateGreaterThan

protected boolean evaluateGreaterThan(WyalFile.Expr.GreaterThan expr,
                                      Interpreter.Environment environment)
                               throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateGreaterThanOrEqual

protected boolean evaluateGreaterThanOrEqual(WyalFile.Expr.GreaterThanOrEqual expr,
                                             Interpreter.Environment environment)
                                      throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateNegation

protected Object evaluateNegation(WyalFile.Expr.Negation expr,
                                  Interpreter.Environment environment)
                           throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateAddition

protected Object evaluateAddition(WyalFile.Expr.Addition expr,
                                  Interpreter.Environment environment)
                           throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateSubtraction

protected Object evaluateSubtraction(WyalFile.Expr.Subtraction expr,
                                     Interpreter.Environment environment)
                              throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateMultiplication

protected Object evaluateMultiplication(WyalFile.Expr.Multiplication expr,
                                        Interpreter.Environment environment)
                                 throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateDivision

protected Object evaluateDivision(WyalFile.Expr.Division expr,
                                  Interpreter.Environment environment)
                           throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateIs

protected Object evaluateIs(WyalFile.Expr.Is expr,
                            Interpreter.Environment environment)
                     throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateArrayAccess

protected Object evaluateArrayAccess(WyalFile.Expr.ArrayAccess expr,
                                     Interpreter.Environment environment)
                              throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateArrayLength

protected Object evaluateArrayLength(WyalFile.Expr.ArrayLength expr,
                                     Interpreter.Environment environment)
                              throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateArrayInitialiser

protected Object evaluateArrayInitialiser(WyalFile.Expr.ArrayInitialiser expr,
                                          Interpreter.Environment environment)
                                   throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateArrayGenerator

protected Object evaluateArrayGenerator(WyalFile.Expr.ArrayGenerator expr,
                                        Interpreter.Environment environment)
                                 throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateArrayUpdate

protected Object evaluateArrayUpdate(WyalFile.Expr.ArrayUpdate expr,
                                     Interpreter.Environment environment)
                              throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateRecordInitialiser

protected Object evaluateRecordInitialiser(WyalFile.Expr.RecordInitialiser expr,
                                           Interpreter.Environment environment)
                                    throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateRecordAccess

protected Object evaluateRecordAccess(WyalFile.Expr.RecordAccess expr,
                                      Interpreter.Environment environment)
                               throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

evaluateRecordUpdate

protected Object evaluateRecordUpdate(WyalFile.Expr.RecordUpdate expr,
                                      Interpreter.Environment environment)
                               throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException

isInstance

protected boolean isInstance(Object value,
                             WyalFile.Type type)
                      throws wybs.lang.NameResolver.ResolutionError,
                             Interpreter.UndefinedException

Throws:

wybs.lang.NameResolver.ResolutionError

Interpreter.UndefinedException

checkTypeInvariants

protected void checkTypeInvariants(wybs.util.AbstractCompilationUnit.Tuple<WyalFile.VariableDeclaration> vars,
                                   Interpreter.Environment environment)
                            throws Interpreter.UndefinedException

Throws:

Interpreter.UndefinedException