CONTEXT FREE GRAMMAR FOR GWANI PROGRAMMING LANGUAGE VERSION 1

Gwani programming language was developed by Qadi Abubakar Muhammad in 1423 A.H. (2002). The language was developed in order to provide a programming language in Hausa. The language belongs to the third generation of programmiung languages. There is a book written by the developer of the language on the language titled,’ Gwani a saukake, jagoran koyon Gwani’, which will soon be out.

Our company has embarked on the design of an interpreter for the language and the interpreter will soon be out in a disk with tutorials on learning how to program in Gwani.

There are thirty-nine reserve keywords in the language, by reserved means that a programmer cannot give them any other meaning apart from the one defined by the interpreter.

These reserved words are:

  1. BAYANI – a comment initialization keyword.

  2. GOGE – a keyword to delete a file or to clear screen.
  3. KULA – a keyword to declare variable.
  4. TAFI – function call.
  5. KIRA – call of a function or sub module.
  6. JEKA – unconditional jump.
  7. SASSARFA – delays operation for specific amount of time.
  8. SAUTI – makes sound using the internal speaker of the computer.
  9. GIRMA – dimensioning an array.
  10. SAKEGIRMA – redimensioning of an array.
  11. SHIGARDA – receives input from the keyboard.
  12. RUBUTA – displays text or argument on the monitor.
  13. MUDDIN – declaring while loop.
  14. KARSHE – end of program.
  15. LISSAFTA - expression assignment.
  16. BUDE - opens a unit or aided file
  17. RUFE - closes a unit or aided file
  18. KASANCEWAR - switch case for an argument
  19. FITA - Exits from a module
  20. DAKATA - temporarily halts operation
  21. ZANA - draws an object on the screen
  22. KUSURWARSIN - gets the sine or arcsine of an argument
  23. KUSURWARCOS - gets the cosine or arccosine of an argument
  24. KUSURWARTAN - gets the tan or arctan of an argument
  25. TAKAITA - rounds up a floating number to a specified digits
  26. TSARIN - declares a function
  27. KARSHEN - ends of a module or function
  28. DAUKO - receives an argument from a function
  29. BISAKURE - initialises on error declaration
  30. CIREKURE - set off the on error mode
  31. LAUNI - Sets the colours of text and the monitor
  32. RUBUTACIKIN - writes an argument into a text file
  33. SHIGARDAGA - gets an argument from a text file
  34. ANINI - reads a keey pressed
  35. INHAR - if..then..else statement
  36. SANYA - assigns value to a declared variable
  37. YANKE - converts a floating number to an integer
  38. JUYA - changes the polarity of a number
  39. TSARASK - reposition a cursor on the screen

BAYANI

  1. BAYANI ::= <TEXT STRING>/;

    2. GOGE

  2. GOGE ::= <FILESPECIFICATION>/<DRIVE>/;

  3. GOGE ::= ;

    4. KULA

  4. KULA ::= <VARIABLE NAME>/ HARAFI/;

  5. KULA ::= <VARIABLE NAME>/ ALKALAMI/;
  6. KULA ::=<VARIABLE NAME>/<0..9>/;
  7. KULA ::=<VARIABLE NAME>/ AMD/;
  8. KULA ::=<VARIABLE NAME>/ ZABI/;

    9. TAFI

  9. TAFI ::= <FUNCTION CALL ARGUMENT>/;

    10. KIRA

  10. KIRA ::=MTK NA/<FUNCTION NAME>/;

  11. KIRA ::=MTK NA/<FUNCTION NAME>/#/1/;
  12. KIRA ::=MTK NA/<FUNCTION NAME>/#/2/;

    13. JEKA

  13. JEKA ::=<LABEL>/DAWO/;

  14. JEKA ::=<LABEL>/CIGABA/;

    15. SASSARFA

  15. SASSARFA ::=<1..60>/;

    16. SAUTI

  16. SAUTI ::=<FREQUENCY>/<1..60>/;

    17. GIRMA

  17. GIRMA ::=<ARRAY NAME>/ [ / 1..100/ ] / HARAFI/;

  18. GIRMA ::=<ARRAY NAME>/ [ / 1..100/ ] / ALKALAMI/;
  19. GIRMA ::=<ARRAY NAME>/ [ / 1..100/ ] / AMD/;
  20. GIRMA ::=<ARRAY NAME>/ [ / 1..100/,/1..100/ ] / HARAFI/;
  21. GIRMA ::=<ARRAY NAME>/ [ / 1..100/,/1..100/ ] / ALKALAMI/;
  22. GIRMA ::=<ARRAY NAME>/ [ / 1..100/,/1..100/ ] / AMD/;

    23. SAKEGIRMA

  23. SAKEGIRMA ::=<ARRAY NAME>/ [ / 1..100/ ] / HARAFI/;

  24. SAKEGIRMA ::=<ARRAY NAME>/ [ / 1..100/ ] / ALKALAMI/;
  25. SAKEGIRMA ::=<ARRAY NAME>/ [ / 1..100/ ] / AMD/;
  26. SAKEGIRMA ::=<ARRAY NAME>/ [ / 1..100/,/1..100/ ] / HARAFI/;
  27. SAKEGIRMA ::=<ARRAY NAME>/ [ / 1..100/,/1..100/ ] / ALKALAMI/;
  28. SAKEGIRMA ::=<ARRAY NAME>/ [ / 1..100/,/1..100/ ] / AMD/;

    29. SHIGARDA

  29. SHIGARDA ::=<VARIABLE>/;

    30. RUBUTA

  30. RUBUTA ::= **/"/<TEXT STRING>/"/;

  31. RUBUTA ::=*/ /"/<TEXT STRING>/"/,/<VARIABLE>/;
  32. RUBUTA ::=*/ /"/<TEXT STRING>/"/,/<0..9>/;
  33. RUBUTA ::=/* /<VARIABLE>/,/"/<TEXT STRING>/"/;
  34. RUBUTA ::=/* /<0..9>/,/"/<TEXT STRING>/"/;
  35. RUBUTA ::=// /<VARIABLE>/;

    36. MUDDIN

  36. MUDDIN ::= <VARIABLE>/</<VARIABLE>/;

  37. MUDDIN ::= <VARIABLE>/>/<VARIABLE>/;
  38. MUDDIN ::= <VARIABLE>/=/<VARIABLE>/;
  39. MUDDIN ::= <VARIABLE>/<>/<VARIABLE>/;
  40. MUDDIN ::= <VARIABLE>/<=/<VARIABLE>/;
  41. MUDDIN ::= <VARIABLE>/>=/<VARIABLE>/;

    42. MAIMAITA

  42. MAIMAITA ::=<LABEL>/;

    43. KARSHE

  43. KARSHE ::= ;

    44. LISSAFTA

  44. LISSAFTA ::= **/<VARIABLE>/+/<VARIABLE>/<VARIABLE>/;

  45. LISSAFTA ::= **/<VARIABLE>/*/<VARIABLE>/<VARIABLE>/;
  46. LISSAFTA ::= **/<VARIABLE>/ / /<VARIABLE>/<VARIABLE>/;
  47. LISSAFTA ::= **/<VARIABLE>/-/<VARIABLE>/<VARIABLE>/;
  48. LISSAFTA ::= **/<VARIABLE>/%/<VARIABLE>/<VARIABLE>/;
  49. LISSAFTA ::= */ /<VARIABLE>/+/<0..9>/<VARIABLE>/;
  50. LISSAFTA ::= */ /<VARIABLE>/*/<0..9>/<VARIABLE>/;
  51. LISSAFTA ::= */ /<VARIABLE>/ / /<0..9>/<VARIABLE>/;
  52. LISSAFTA ::= */ /<VARIABLE>/-/<0..9>/<VARIABLE>/;
  53. LISSAFTA ::= */ /<VARIABLE>/%/<0..9>/<VARIABLE>/;
  54. LISSAFTA ::= /*/<0..9>/+/<VARIABLE>/<VARIABLE>/;
  55. LISSAFTA ::= /*/<0..9>/*/<VARIABLE>/<VARIABLE>/;
  56. LISSAFTA ::= /*/<0..9>/ / /<VARIABLE>/<VARIABLE>/;
  57. LISSAFTA ::= /*/<0..9>/-/<VARIABLE>/<VARIABLE>/;
  58. LISSAFTA ::=/*/<0..9>/%/<VARIABLE>/<VARIABLE>/;
  59. LISSAFTA ::= // /<0..9>/+/<0..9>/<VARIABLE>/;
  60. LISSAFTA ::= // /<0..9>/*/<0..9>/<VARIABLE>/;
  61. LISSAFTA ::= // /<0..9>/ / /<0..9>/<VARIABLE>/;
  62. LISSAFTA ::= // /<0..9>/-/<0..9>/<VARIABLE>/;
  63. LISSAFTA ::=// /<0..9>/%/<0..9>/<VARIABLE>/;

    64. BUDE

  64. BUDE ::= TAGANKUSURWA/<LABEL>/;

  65. BUDE ::= TAGANLAUNI/<LABEL>/;
  66. BUDE ::= TAGANRAGOWA/<LABEL>/;
  67. BUDE ::= TAGANKALMA/<LABEL>/;
    68. >RUFE

  68. RUFE ::= TAGANKUSURWA/;

  69. RUFE ::= TAGANLAUNI/;
  70. RUFE ::= TAGANRAGOWA/;
  71. RUFE ::= TAGANKALMA/;

    72. KASANCEWAR

  72. KASANCEWAR ::=<VARIABLE>

    73. /<CASE1>/:/<STATEMENT 1>/;

    .

    .

    /<CASE n>/:/<STATEMENT n/;

    / SAURAN/:/DEFAULT STATEMENT/;

    <LABEL>/FITA/<LABEL>/;

    FITA

  73. FITA ::=FITA/<LABEL>/;

    74. DAKATA

  74. DAKATA ::=;

    75. ZANA

  75. ZANA ::=<ANGLE>/<LENGTH OF DRAWING>/<TINTING COEFFICIENT>/;

    76. KUSURWARSIN

  76. KUSURWARSIN ::=<0..360>/<VARIABLE>/;
  77. KUSURWARSIN ::=<VARIABLE>/<VARIABLE>/;

    78. KUSURWARCOS

  78. KUSURWARCOS ::=<0..360>/<VARIABLE>/;

  79. KUSURWARCOS ::=<VARIABLE>/<VARIABLE>/;

    80. KUSURWARTAN

  80. KUSURWARTAN ::=<0..360>/<VARIABLE>/;

  81. KUSURWARTAN ::=<VARIABLE>/<VARIABLE>/;

    82. TAKAITA

  82. TAKAITA ::=<VARIABLE>/<DECIMAL PLACES>/;

    83. TSARIN

  83. TSARIN :;=<FUNCTION NAME>/(/<VARIABLE>/)/(/<VARIABLE>/)/<LABEL>/;

    84. KARSHEN

  84. KARSHEN ::=<FUNCTION NAME>/;

    85. DAUKO

  85. DAUKO/(/<VARIABLE/)/(/<VARIABLE>/)/DAGA/<FUNCTION NAME>/;

    86. BISAKURE

  86. BISAKURE ::=<LABEL>/<LABEL>/;

    87. CIREKURE

  87. CIREKURE ::=;

    88. LAUNI

  88. LAUNI ::=<COLOUR>/<COLOUR>/;

    89. DA

  89. <VARIABLE>/&/<VARIABLE>

    90. KO

  90. <VARIABLE>/ /<VARIABLE>

    91. BABU

  91. !<VARIABLE>

    92. RUBUTACIKIN

  92. RUBUTACIKIN ::=<PATH>/*/"/<TEXT STRING>/"/;

  93. RUBUTACIKIN ::=<PATH>/ / /"/<VARIABLE>/"/;
  94. RUBUTACIKIN ::=<PATH>/ / /"/<VARIABLE>/"/;

    95. SHIGARDAGA

  95. SHIGARDAGA ::=<PATH>/*/;

  96. SHIGARDAGA ::=<PATH>/ / /;

    97. ANINI

  97. ANINI ::=;

    98. INHAR..TO..KOKUMA

  98. INHAR ::=<CONDITION>/TO/<STATEMENT1>/;

  99. INHAR ::=<CONDITION>/TO/<STATEMENT 1>/KOKUMA/<STATEMENT 2>/;

    100. SANYA

  100. SANYA ::=<VARIABLE>/=/<CONSTANT>/;

    101. YANKE

  101. YANKE ::=<VARIABLE>/;

    102. JUYA

  102. JUYA ::=<VARIABLE>/;

    103. TSARASK

  103. TSARASK ::=<1..24>/<1..78>/;
Sayi takardar da ke koyar da rubuta aiki cikin Gwani bugi nan
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