(*
    BSD 2-Clause License

    Copyright (c) 2018-2019, Anton Krotov
    All rights reserved.
*)

MODULE ERRORS;

IMPORT C := CONSOLE, UTILS, mConst := CONSTANTS;


PROCEDURE HintMsg* (name: ARRAY OF CHAR; line, col, hint: INTEGER);
BEGIN
    IF hint = 0 THEN
        C.String("  hint ("); C.Int(line); C.String(":"); C.Int(col); C.String(") ");
        C.String("variable '"); C.String(name); C.StringLn("' never used")
    END
END HintMsg;


PROCEDURE WarningMsg* (line, col, warning: INTEGER);
BEGIN
    C.String("  warning ("); C.Int(line); C.String(":"); C.Int(col); C.String(") ");
    CASE warning OF
    |0: C.StringLn("passing a string value as a fixed array")
    |1: C.StringLn("endless FOR loop")
    END
END WarningMsg;


PROCEDURE ErrorMsg* (fname: ARRAY OF CHAR; line, col, errno: INTEGER);
VAR
    str: ARRAY 80 OF CHAR;

BEGIN
    C.Ln;
    C.String("  error  ("); C.Int(errno); C.String(") ("); C.Int(line); C.String(":"); C.Int(col); C.String(") ");

    CASE errno OF
    |  1: str := "missing 'H' or 'X'"
    |  2: str := "missing scale"
    |  3: str := "unclosed string"
    |  4: str := "illegal character"
    |  5: str := "string too long"
    |  6: str := "identifier too long"
    |  7: str := "number too long"
    |  8..12: str := "number too large"
    | 13: str := "real numbers not supported"

    | 21: str := "'MODULE' expected"
    | 22: str := "identifier expected"
    | 23: str := "module name does not match file name"
    | 24: str := "';' expected"
    | 25: str := "identifier does not match module name"
    | 26: str := "'.' expected"
    | 27: str := "'END' expected"
    | 28: str := "',', ';' or ':=' expected"
    | 29: str := "module not found"
    | 30: str := "multiply defined identifier"
    | 31: str := "recursive import"
    | 32: str := "'=' expected"
    | 33: str := "')' expected"
    | 34: str := "syntax error in expression"
    | 35: str := "'}' expected"
    | 36: str := "incompatible operand"
    | 37: str := "incompatible operands"
    | 38: str := "'RETURN' expected"
    | 39: str := "integer overflow"
    | 40: str := "floating point overflow"
    | 41: str := "not enough floating point registers; simplify expression"
    | 42: str := "out of range 0..255"
    | 43: str := "expression is not an integer"
    | 44: str := "out of range 0..MAXSET"
    | 45: str := "division by zero"
    | 46: str := "integer division by zero"
    | 47: str := "'OF' or ',' expected"
    | 48: str := "undeclared identifier"
    | 49: str := "type expected"
    | 50: str := "recursive type definition"
    | 51: str := "illegal value of constant"
    | 52: str := "not a record type"
    | 53: str := "':' expected"
    | 54: str := "need to import SYSTEM"
    | 55: str := "pointer type not defined"
    | 56: str := "out of range 0..MAXSET"
    | 57: str := "'TO' expected"
    | 58: str := "not a record type"
    | 59: str := "this expression cannot be a procedure"
    | 60: str := "identifier does not match procedure name"
    | 61: str := "illegally marked identifier"
    | 62: str := "expression should be constant"
    | 63: str := "not enough RAM"
    | 64: str := "'(' expected"
    | 65: str := "',' expected"
    | 66: str := "incompatible parameter"
    | 67: str := "'OF' expected"
    | 68: str := "type expected"
    | 69: str := "result type of procedure is not a basic type"
    | 70: str := "import not supported"
    | 71: str := "']' expected"
    | 72: str := "expression is not BOOLEAN"
    | 73: str := "not a record"
    | 74: str := "undefined record field"
    | 75: str := "not an array"
    | 76: str := "expression is not an integer"
    | 77: str := "not a pointer"
    | 78: str := "type guard not allowed"
    | 79: str := "not a type"
    | 80: str := "not a record type"
    | 81: str := "not a pointer type"
    | 82: str := "type guard not allowed"
    | 83: str := "index out of range"
    | 84: str := "dimension too large"
    | 85: str := "procedure must have level 0"
    | 86: str := "not a procedure"
    | 87: str := "incompatible expression (RETURN)"
    | 88: str := "'THEN' expected"
    | 89: str := "'DO' expected"
    | 90: str := "'UNTIL' expected"
    | 91: str := "incompatible assignment"
    | 92: str := "procedure call of a function"
    | 93: str := "not a variable"
    | 94: str := "read only variable"
    | 95: str := "invalid type of expression (CASE)"
    | 96: str := "':=' expected"
    | 97: str := "not INTEGER variable"
    | 98: str := "illegal value of constant (0)"
    | 99: str := "incompatible label"
    |100: str := "multiply defined label"
    |101: str := "too large parameter of WCHR"
    |102: str := "label expected"
    |103: str := "illegal value of constant"
    |104: str := "type too large"
    |105: str := "access to intermediate variables not allowed"
    |106: str := "qualified identifier expected"
    |107: str := "too large parameter of CHR"
    |108: str := "a variable or a procedure expected"
    |109: str := "expression should be constant"

    |111: str := "record [noalign] cannot have a base type"
    |112: str := "record [noalign] cannot be a base type"
    |113: str := "result type of procedure should not be REAL"
    |114: str := "identifiers 'lib_init' and 'version' are reserved"
    |115: str := "recursive constant definition"
    |116: str := "procedure too deep nested"

    |120: str := "too many formal parameters"

    |122: str := "negative divisor"
    |123: str := "illegal flag"
    |124: str := "unknown flag"
    |125: str := "flag not supported"
    END;
    C.StringLn(str);
    C.String("  file:  ");  C.StringLn(fname);
    UTILS.Exit(1)
END ErrorMsg;


PROCEDURE Error1 (s1: ARRAY OF CHAR);
BEGIN
    C.Ln;
    C.StringLn(s1);
    UTILS.Exit(1)
END Error1;


PROCEDURE Error3 (s1, s2, s3: ARRAY OF CHAR);
BEGIN
    C.Ln;
    C.String(s1); C.String(s2); C.StringLn(s3);
    UTILS.Exit(1)
END Error3;


PROCEDURE Error5 (s1, s2, s3, s4, s5: ARRAY OF CHAR);
BEGIN
    C.Ln;
    C.String(s1); C.String(s2); C.String(s3); C.String(s4); C.StringLn(s5);
    UTILS.Exit(1)
END Error5;


PROCEDURE WrongRTL* (ProcName: ARRAY OF CHAR);
BEGIN
    Error5("procedure ", mConst.RTL_NAME, ".", ProcName, " not found")
END WrongRTL;


PROCEDURE BadParam* (param: ARRAY OF CHAR);
BEGIN
    Error3("bad parameter: ", param, "")
END BadParam;


PROCEDURE FileNotFound* (Path, Name, Ext: ARRAY OF CHAR);
BEGIN
    Error5("file ", Path, Name, Ext, " not found")
END FileNotFound;


PROCEDURE Error* (n: INTEGER);
BEGIN
    CASE n OF
    |201: Error1("writing file error")
    |202: Error1("too many relocations")
    |203: Error1("size of program is too large")
    |204: Error1("size of variables is too large")
    |205: Error1("not enough parameters")
    |206: Error1("bad parameter <target>")
    |207: Error3('inputfile name extension must be "', mConst.FILE_EXT, '"')
    END
END Error;


END ERRORS.