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## org.statcato.calculator
Class MathExpParserComplete

    java.lang.Object
      org.statcato.calculator.MathExpParserComplete

    public class MathExpParserComplete

extends java.lang.Object

A parser for mathematical expressions using the recurive descent algorithm. Acceptable expressions are defined by the following grammar:

E -> T { ("+" | "-") T}
T -> F { ("*" | "/") F}
F -> P {"^" F}
P -> v | "(" E ")" | "-" T | func_name"(" E ")" | Cx | "'" L "'"
L -> column_label

where expressions enclosed by { } can appear zero or more times.

Since:
  1.0
Version:
  %I%, %G%
Author:
  Margaret Yau

Constructor Summary
`MathExpParserComplete(Spreadsheet sp)`

Method Summary
`java.lang.String` | `getError()` Returns error message from the scanner.
`CompUnit` | `parse(java.lang.String exp, boolean isRadian)` Parses the given expression.
`CompUnit` | `S()` Parses a statement.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### MathExpParserComplete

    public MathExpParserComplete(Spreadsheet sp)

Method Detail

### parse

    public CompUnit parse(java.lang.String exp,
                          boolean isRadian)

  Parses the given expression.

  Parameters:
    `exp` - expression in string
    `isRadian` - boolean value of whether radians are used

### getError

    public java.lang.String getError()

  Returns error message from the scanner.

  Returns:
    error string

### S

    public CompUnit S()

  Parses a statement. S->E

  Returns:
    the value of a statement

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