org.problets.domain.model.control.selection
Class SwitchModel

java.lang.Object
  org.problets.domain.model.DomainModel
      org.problets.domain.model.control.ControlModel
          org.problets.domain.model.control.ConditionControl
              org.problets.domain.model.control.selection.Selection
                  org.problets.domain.model.control.selection.SwitchModel

All Implemented Interfaces:

java.lang.Cloneable

public class SwitchModel
extends Selection

Class: SwitchModel Purpose: Provides procedures to parse the switch cases and get the statement sequence by calling CaseModel. This class is also responsible for generating code and running the model

Field Summary

static int

IDENTITY

Fields inherited from class org.problets.domain.model.control.ConditionControl

INCORRECT_TYPE

Fields inherited from class org.problets.domain.model.control.ControlModel

ABORT_EXECUTION, BREAK_EXECUTION, CONTINUE_EXECUTION, END_EXECUTION, INFINITE_EXECUTION, RETURN_EXECUTION, RUN_TIME_ERROR_EXECUTION, SKIP_EXECUTION

Fields inherited from class org.problets.domain.model.DomainModel

BOOLEAN, BREAKPOINT, CHARACTER, DOUBLE_PRECISION_REAL, ERROR_TYPE, EVAL_STATUS, expACTION, expASSIGNMENT, expAUTO_DEALLOCATION, expCALL, expCONDITION, expDECLARATION, expDEREFERENCING, expDYNAMIC_ALLOCATION, expDYNAMIC_ALLOCATION_INITIALIZATION, expDYNAMIC_DEALLOCATION, expELSE_CLAUSE, expERROR, expEXECUTION, expIF_CLAUSE, expINITIALIZATION, expINPUT, expPARAMETER_PASSING, expPRINT, expQUESTIONABLE, expREFERENCING, expRETURN, expRUNTIME_ERROR, expSEMANTIC_ERROR, expSYNTAX_ERROR, expUPDATE, MAX_OBJECT_IDENTITY, MIN_OBJECT_IDENTITY, QUADRUPLE_PRECISION_REAL, RUNTIME_ERROR, SEMANTIC_ERROR, SIGNED_INTEGER, SIGNED_LONG, SIGNED_SHORT, SINGLE_PRECISION_REAL, SYNTAX_ERROR, UNDEFINED_TYPE, UNSIGNED_INTEGER, UNSIGNED_LONG, UNSIGNED_SHORT, WARNING

Constructor Summary

SwitchModel(ActivationRecord parent, HeapModel heap, java.lang.String in_template)
Constructor

Method Summary

ExecutionStatus	explainProcess(RunEnv runEnv, Behavior behavior, boolean stepFlag) public int explainProcess( RunEnv runEnv, Behavior behavior, boolean stepFlag) Extracts the cases from the caseVector and sends it to the explainProcess of CaseModel so that CaseModel can explain the case.
void	getCode(java.util.Vector codeText, OutputStream output) public void getCode(Vector codeText, OutputStream output) Generate the Switch clause and display it on the screen
java.lang.String	getNestedSwitchStatement(java.lang.String switchBody, int indexFinder) public void getNestedSwitchStatement(switchBody, indexFinder) Parses nested Switch clause within the main switch
static boolean	grade(java.lang.String template, java.lang.String studentCode) Grade is used for checking student's code compared to the actual code.
static boolean	gradeOld(java.lang.String template, java.lang.String studentCode) Grade is used for checking student's code compared to the actual code.
java.util.Vector	postProcessStatements(java.lang.String template) Post-processes the result of TemplateParser.getNextStatement() to correctly handle case, default, and nested switch statements

Methods inherited from class org.problets.domain.model.control.selection.Selection

main

Methods inherited from class org.problets.domain.model.control.ConditionControl

getPossibleErrors

Methods inherited from class org.problets.domain.model.control.ControlModel

getCodeLength, getName, getStartLineNumber

Methods inherited from class org.problets.domain.model.DomainModel

clone, getId, getIdName

Methods inherited from class java.lang.Object

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

Field Detail

IDENTITY

public static final int IDENTITY

See Also:

Constant Field Values

Constructor Detail

SwitchModel

public SwitchModel(ActivationRecord parent,
                   HeapModel heap,
                   java.lang.String in_template)

Constructor

Parameters:

parent - - the nested scope's parent activation record

heap - - the heap to be used

in_template - - the template to be parsed

Method Detail

postProcessStatements

public java.util.Vector postProcessStatements(java.lang.String template)

Post-processes the result of TemplateParser.getNextStatement() to correctly handle case, default, and nested switch statements

Parameters:

template - - complete switch template to be parsed

Returns:

vector of parsed statements from the switch

getNestedSwitchStatement

public java.lang.String getNestedSwitchStatement(java.lang.String switchBody,
                                                 int indexFinder)

public void getNestedSwitchStatement(switchBody, indexFinder) Parses nested Switch clause within the main switch

Parameters:

switchBody - - Current template for the switch clause

indexFinder - - Starting location of the nested switch

Returns:

Nested switch statement as a String

getCode

public void getCode(java.util.Vector codeText,
                    OutputStream output)

public void getCode(Vector codeText, OutputStream output) Generate the Switch clause and display it on the screen

Overrides:

getCode in class ControlModel

Parameters:

codeText - - a Vector that holds the code

output - - For outputting the code on the screen

explainProcess

public ExecutionStatus explainProcess(RunEnv runEnv,
                                      Behavior behavior,
                                      boolean stepFlag)

public int explainProcess( RunEnv runEnv, Behavior behavior, boolean stepFlag) Extracts the cases from the caseVector and sends it to the explainProcess of CaseModel so that CaseModel can explain the case. Only one case is sent to CaseModel explainProcess().

Overrides:

explainProcess in class ControlModel

Parameters:

runEnv - - Run Environment of the program

behavior - - behavior of the program

stepFlag - - execution flag

Returns:

status of the program

grade

public static boolean grade(java.lang.String template,
                            java.lang.String studentCode)

Grade is used for checking student's code compared to the actual code.

gradeOld

public static boolean gradeOld(java.lang.String template,
                               java.lang.String studentCode)

Grade is used for checking student's code compared to the actual code. - grade() supersedes this.