Function return value

the return statement signals the running program to exit the current function and return to the caller

Format:

return value

Input:

Output:

Conditional properties that reference this function:

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return v

  then "if" map at time (t + 1) = "if" map at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return v

  then 'while stack' at time (t + 1) = 'while stack' at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return v

  then Class Map at time (t + 1) = Class Map at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return c
  • c is constant

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return c
  • c is a variable

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then the expression at time (t + 1) = rex

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then expression state at time (t + 1) = "begin_expr"

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then the line at time (t + 1) = i

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then the tab at time (t + 1) = j

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then Variables Map at time (t + 1) = Variables Map at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then stack at time (t + 1) = stack at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then Value Stack at time (t + 1) = [ ]

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then parent stack at time (t + 1) = [ ]

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then arguments stack at time (t + 1) = [ ]

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "not_expr"

  then Control Map at time (t + 1) = Control Map at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then Variables Map at time (t + 1) = varis

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then the line at time (t + 1) = line

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then the tab at time (t + 1) = tab

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then expression state at time (t + 1) = "call_returned"

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then parent stack at time (t + 1) = parent_stack

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then Control Map at time (t + 1) = control_map

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then stack at time (t + 1) = rest

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then Value Stack at time (t + 1) = value_stack

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then arguments stack at time (t + 1) = arg_stack

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • stack at time t = [ program context with variables: varis and expression state: (expression state with parent stack: parent_stack arguments: arg_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • expression state at time t = "end_expr"

  then Return Value at time (t + 1) = Return Value at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • expression state at time t = "end_expr"

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return (function call with name: name and arguments: args)
  • expression state at time t = "end_expr"

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return v

  then Class Map at time (t + 1) = Class Map at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return c
  • c is constant

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return c
  • c is a variable

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ ]

  then Expression Stack at time (t + 1) = [ [ rex, [ ] ], [ ] ]

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ ]

  then Value Stack at time (t + 1) = [ [ ], [ ] ]

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ ]

  then the line at time (t + 1) = i

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ ]

  then the tab at time (t + 1) = j

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ ]

  then Variables Map at time (t + 1) = Variables Map at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ ]

  then Context Stack at time (t + 1) = Context Stack at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ ]

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ ]

  then Control Map at time (t + 1) = Control Map at time t

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Context Stack at time t = [ program context with variables: vars and expression state: (expression state with expression stack: expr_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • Expression Stack at time t = [ [ ], [ ] ]

  then Variables Map at time (t + 1) = vars

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Context Stack at time t = [ program context with variables: vars and expression state: (expression state with expression stack: expr_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • Expression Stack at time t = [ [ ], [ ] ]

  then the line at time (t + 1) = line

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Context Stack at time t = [ program context with variables: vars and expression state: (expression state with expression stack: expr_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • Expression Stack at time t = [ [ ], [ ] ]

  then the tab at time (t + 1) = tab

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Context Stack at time t = [ program context with variables: vars and expression state: (expression state with expression stack: expr_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • Expression Stack at time t = [ [ ], [ ] ]

  then Control Map at time (t + 1) = control_map

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Context Stack at time t = [ program context with variables: vars and expression state: (expression state with expression stack: expr_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • Expression Stack at time t = [ [ ], [ ] ]

  then Context Stack at time (t + 1) = rest

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Context Stack at time t = [ program context with variables: vars and expression state: (expression state with expression stack: expr_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • Expression Stack at time t = [ [ ], [ ] ]

  then Expression Stack at time (t + 1) = expr_stack

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Context Stack at time t = [ program context with variables: vars and expression state: (expression state with expression stack: expr_stack values: value_stack line: line tab: tab) and control map: control_map, rest ]
  • Expression Stack at time t = [ [ ], [ ] ]

  then Value Stack at time (t + 1) = value_stack

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ [ ], [ ] ]
  • Value Stack at time t = [ [ value, [ ] ], [ ] ]

  then Return Value at time (t + 1) = [ value, [ ] ]

  (link)

• if the following are true:

  • the line at time t = i
  • the tab at time t = j
  • statement at line i, tab j = return rex
  • Expression Stack at time t = [ [ ], [ ] ]

  then Python Object Store at time (t + 1) = Python Object Store at time t

  (link)

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