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lpmessages.pas
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lpmessages.pas
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{
Author: Niels A.D
Project: Lape (https://github.com/nielsAD/lape)
License: GNU Lesser GPL (http://www.gnu.org/licenses/lgpl.html)
Lape exceptions.
}
unit lpmessages;
{$I lape.inc}
interface
uses
SysUtils,
lptypes;
type
lpException = class(Exception)
protected
FDocPos: TDocPos;
FError: lpString;
FStackTrace: lpString;
FHint: lpString;
public
property DocPos: TDocPos read FDocPos;
property Error: lpString read FError;
property Hint: lpString read FHint;
property StackTrace: lpString read FStackTrace;
constructor Create(AMessage: lpString; ADocPos: TDocPos; AStackTrace: lpString = ''; AHint: lpString = '');
end;
const
lpeCannotEvalPreprocessorFunc = 'Cannot evalulate preprocessor function "%s"';
lpeArrayLengthsDontMatch = 'Length of arrays (%s) don''t match';
lpeAssertionFailure = 'Assertion failure';
lpeAssertionFailureMsg = 'Assertion failure: %s';
lpeBlockExpected = 'Block expected';
lpeCannotAssign = 'Target cannot be assigned to';
lpeCannotBreak = 'Cannot break out of this statement';
lpeCannotContinue = 'Cannot use continue in this context';
lpeCannotEvalConst = 'Cannot be evaluated as constant';
lpeCannotEvalConstProc = 'Procedures cannot be used for constant evaluation';
lpeCannotEvalRunTime = 'Cannot be evaluated at runtime';
lpeCannotFallthrough = 'Cannot use fallthrough in this context';
lpeCannotInvoke = 'Cannot invoke identifier';
lpeCannotMixStaticOverload = 'Cannot mix static with non-static method overload';
lpeCannotOverload = 'Cannot overload function';
lpeCannotOverload2 = 'Cannot overload "%s" with a "%s"';
lpeCannotOverloadOperator = 'Cannot overload operator "%s"';
lpeCannotOverrideOperator = 'Cannot override operator "%s" with types "%s" and "%s"';
lpeClosingParenthesisExpected = 'Closing parenthesis expected';
lpeClosingBracketExpected = 'Closing bracket expected';
lpeConditionalNotClosed = 'Conditional statement not properly closed';
lpeConstantExpected = 'Constant expression expected';
lpeDeclarationOutOfScope = 'Declaration "%s" out of scope';
lpeDefaultParamInProperties = 'Properties do not support default parameters';
lpeDefaultToMoreThanOne = 'Runtime default value can only be assigned to one variable';
lpeDuplicateDeclaration = 'Duplicate declaration "%s"';
lpeDuplicateHashBucket = 'Duplicate hash bucket with "%s" and "%s"';
lpeErrorScanningString = '%s while scanning string literal';
lpeExceptionAt = '%s at line %d, column %d';
lpeExceptionIn = '%s in "%s"';
lpeExceptionInFile = '%s in file "%s"';
lpeExpected = '%s expected';
lpeExpectedAssignOperator = 'Expected assign operator';
lpeExpectedArray = 'Array expected';
lpeExpectedArrayOfType = 'Array expected of type "%s"';
lpeExpectedBoolExpression = 'Boolean expression expected';
lpeExpectedDynamicArray = 'Dynamic array expected';
lpeExpectedNormalMethod = 'Normal method expected';
lpeExpectedPointerType = 'Pointer type expected';
lpeExpectedIndexValue = 'Expected at least one index value';
lpeExpectedOther = 'Found unexpected token "%s", expected "%s"';
lpeExpressionExpected = 'Expression expected';
lpeExpectedEnum = 'Enum expected';
lpeFileNotFound = 'File "%s" not found';
lpeImpossible = 'It''s impossible!';
lpeIncompatibleAssignment = 'Can''t assign "%s" to "%s"';
lpeIncompatibleOperator = 'Operator "%s" is not supported for type';
lpeIncompatibleOperator1 = 'Operator "%s" not compatible with "%s"';
lpeIncompatibleOperator2 = 'Operator "%s" not compatible with types "%s" and "%s"';
lpeInvalidAssignment = 'Invalid assignment';
lpeInvalidCast = 'Invalid cast';
lpeInvalidCaseStatement = 'Invalid case statement';
lpeInvalidCondition = 'Invalid condition';
lpeInvalidCompareMethod = 'Invalid compare method';
lpeInvalidEvaluation = 'Invalid evaluation';
lpeInvalidForward = 'Forwarded declaration "%s" not resolved';
lpeInvalidLabel = 'Invalid label';
lpeInvalidIndex = 'Invalid index "%s"';
lpeInvalidIterator = 'Variable cannot be used for iteration';
lpeInvalidJump = 'Invalid jump';
lpeInvalidOpenArrayElement = 'Invalid open array element (%s) (index: %d)';
lpeInvalidOperator = 'Operator "%s" expects %d parameters';
lpeInvalidDictionaryOperation = 'Invalid operation (%s) on dictionary';
lpeInvalidRange = 'Expression is not a valid range';
lpeInvalidUnionType = 'Invalid union type';
lpeInvalidValueForType = 'Invalid value for type "%s"';
lpeInvalidWithReference = 'Invalid with-reference';
lpeLostClosingParenthesis = 'Found closing parenthesis without matching opening parenthesis';
lpeLostConditional = 'Found conditional without matching opening statement';
lpeMethodOfObjectExpected = 'Expected method of object';
lpeNoDefaultForParam = 'No default value for parameter %d found';
lpeNoForwardMatch = 'Forwarded declaration doesn''t match';
lpeNoMatchingProperty = 'No matching property found';
lpeNoProperty = 'Don''t know which property to call with params (%s)';
lpeNoOverloadedMethod = 'Don''t know which overloaded method to call with params (%s)';
lpeNeedMoreBuckets = 'Need more hash buckets (currently %d)';
lpeOperatorExpected = 'Operator expected';
lpeOperatorRequiredForType = 'Operator "%s" is required for type "%s"';
lpeOutOfStackRange = 'Out of stack range';
lpeOutOfTypeRange = 'Out of type range';
lpeOutOfTypeRange1 = 'Out of type range (value:%d, low:%d, high:%d)';
lpeOutOfTypeRangeLow = 'Out of type range (value:%d, low:%d)';
lpeOutOfTypeRangeHigh = 'Out of type range (value:%d, high:%d)';
lpeOutsideExceptBlock = 'Can only be used in an except block';
lpeIndexOutOfRange = 'Index out of range (index:%d, low:%d, high:%d)';
lpeIndexOutOfRangeLow = 'Index out of range (index:%d, low:%d)';
lpeIndexOutOfRangeHigh = 'Index out of range (index:%d, high:%d)';
lpeParentOutOfScope = 'Parent declaration is out of scope';
lpeExpectedProperty = 'Property has to be of a type';
lpeRuntime = 'Runtime error: "%s"';
lpeStatementNotAllowed = 'Statement not allowed here';
lpeStaticMethodExpected = 'Variable expected. "%s" is not a static method';
lpeTooMuchParameters = 'Too many parameters found';
lpeTypeExpected = 'Type expected';
lpeUnClosedComment = 'Unclosed comment';
lpeUnExpectedToken = 'Found unexpected token "%s"';
lpeUnknownDeclaration = 'Unknown declaration "%s"';
lpeUnknownDeclarationOpenArray = 'Unknown declaration in open array (index: %d)';
lpeUnknownDirective = 'Unknown compiler directive';
lpeUnknownOC = 'Unknown opcode';
lpeUnknownParent = 'Cannot find parent declaration';
lpeUserDefinedError = 'User defined error: "%s"';
lpeVariableExpected = 'Variable expected';
lpeVariableOfTypeExpected = 'Expected variable of type "%s", got "%s"';
lpeWrongNumberParams = 'Wrong number of parameters found, expected %d';
lpeScriptMethodExpected = 'Script method expected';
lpeMethodDeclarationParenthesesExpected = 'Missing parentheses in function declaration';
lphVariableNotUsed = 'Variable "%s" not used';
lphParameterNotUsed = 'Parameter "%s" not used';
lphParamterNotSet = 'Parameter "%s" not set';
lphResultNotSet = 'Result not set';
lphDeprecatedMethod = 'Method "%s" is deprecated';
lphDeprecatedMethodHint = 'Method "%s" is deprecated "%s"';
lphUnImplementedMethod = 'Method "%s" is not implemented';
lphExperimentalMethod = 'Method "%s" is experimental';
lphDuplicateLocalName = 'Local declaration "%s" exists globally';
lphUserDefined = 'User defined hint: "%s"';
lphExpectedParameters = 'Expected parameters for "%s":' + LineEnding + '> %s';
lphAvailableMethods = 'Available "%s" methods:' + LineEnding;
procedure LapeException(Msg: lpString; Hint: String = ''); overload;
procedure LapeException(Msg: lpString; DocPos: TDocPos; Hint: String = ''); overload;
procedure LapeException(Msg: lpString; DocPos: array of TLapeBaseDeclClass; Hint: String = ''); overload;
procedure LapeExceptionFmt(Msg: lpString; Args: array of const; Hint: String = ''); overload;
procedure LapeExceptionFmt(Msg: lpString; Args: array of const; DocPos: TDocPos; Hint: String = ''); overload;
procedure LapeExceptionFmt(Msg: lpString; Args: array of const; DocPos: array of TLapeBaseDeclClass; Hint: String = ''); overload;
procedure LapeExceptionRuntime(e: lpException; StackTrace: lpString); overload;
procedure LapeExceptionRuntime(e: Exception; StackTrace: lpString; DocPos: TDocPos); overload;
// reraise exception with a different docpos
procedure LapeExceptionReraise(e: lpException; DocPos: TDocPos); overload;
procedure LapeExceptionReraise(e: lpException; DocPos: array of TLapeBaseDeclClass); overload;
function FormatLocation(Msg: lpString; DocPos: TDocPos): lpString;
implementation
constructor lpException.Create(AMessage: lpString; ADocPos: TDocPos; AStackTrace: lpString; AHint: lpString);
begin
if (ADocPos.Col <> NullDocPos.Col) and (ADocPos.Line <> NullDocPos.Line) then
inherited Create(string(FormatLocation(AMessage, ADocPos)))
else
inherited Create(string(AMessage));
FDocPos := ADocPos;
FError := AMessage;
FStackTrace := AStackTrace;
FHint := AHint;
end;
procedure LapeExceptionRuntime(e: lpException; StackTrace: lpString);
begin
raise lpException.Create(Format(lpeRuntime, [e.Error]), e.DocPos, StackTrace);
end;
procedure LapeExceptionRuntime(e: Exception; StackTrace: lpString; DocPos: TDocPos);
begin
raise lpException.Create(Format(lpeRuntime, [e.Message]), DocPos, StackTrace);
end;
procedure LapeExceptionReraise(e: lpException; DocPos: TDocPos);
begin
raise lpException.Create(e.Error, DocPos, e.StackTrace, e.Hint);
end;
procedure LapeExceptionReraise(e: lpException; DocPos: array of TLapeBaseDeclClass);
var
i: Integer;
NewDocPos: TDocPos;
begin
NewDocPos := NullDocPos;
for i := 0 to High(DocPos) do
if (DocPos[i] <> nil) and
(DocPos[i].DocPos.Col <> NullDocPos.Col) and
(DocPos[i].DocPos.Line <> NullDocPos.Line) then
begin
NewDocPos := DocPos[i].DocPos;
Break;
end;
raise lpException.Create(e.Error, NewDocPos, e.StackTrace, e.Hint);
end;
function FormatLocation(Msg: lpString; DocPos: TDocPos): lpString;
begin
Result := Msg;
if (DocPos.Line > 0) and (DocPos.Col > 0) then
Result := Format(lpString(lpeExceptionAt), [Result, DocPos.Line, DocPos.Col]);
if (DocPos.FileName <> '') then
Result := Format(lpString(lpeExceptionInFile), [Result, DocPos.FileName]);
end;
{$IF DEFINED(Delphi) AND (CompilerVersion <= 21.00)}
function ReturnAddress: Pointer;
asm
MOV EAX, [EBP+4]
end;
{$IFEND}
procedure _LapeException(Msg: lpString; DocPos: TDocPos; Hint: String = ''); inline;
begin
raise lpException.Create(Msg, DocPos, '', Hint) at {$IFDEF FPC}get_caller_addr(get_frame){$ELSE}ReturnAddress{$ENDIF};
end;
procedure LapeException(Msg: lpString; Hint: String);
begin
_LapeException(Msg, NullDocPos, Hint);
end;
procedure LapeException(Msg: lpString; DocPos: TDocPos; Hint: String);
begin
_LapeException(Msg, DocPos, Hint);
end;
procedure LapeException(Msg: lpString; DocPos: array of TLapeBaseDeclClass; Hint: String);
var
i: Integer;
begin
for i := 0 to High(DocPos) do
if (DocPos[i] <> nil) and
(DocPos[i].DocPos.Col <> NullDocPos.Col) and
(DocPos[i].DocPos.Line <> NullDocPos.Line)
then
begin
_LapeException(Msg, DocPos[i].DocPos, Hint);
Exit;
end;
_LapeException(Msg, NullDocPos, Hint);
end;
procedure LapeExceptionFmt(Msg: lpString; Args: array of const; Hint: String);
begin
_LapeException(Format(Msg, Args), NullDocPos);
end;
procedure LapeExceptionFmt(Msg: lpString; Args: array of const; DocPos: TDocPos; Hint: String);
begin
_LapeException(Format(Msg, Args), DocPos, Hint);
end;
procedure LapeExceptionFmt(Msg: lpString; Args: array of const; DocPos: array of TLapeBaseDeclClass; Hint: String);
var
i: Integer;
begin
Msg := Format(Msg, Args);
for i := 0 to High(DocPos) do
if (DocPos[i] <> nil) and
(DocPos[i].DocPos.Col <> NullDocPos.Col) and
(DocPos[i].DocPos.Line <> NullDocPos.Line)
then
begin
_LapeException(Msg, DocPos[i].DocPos, Hint);
Exit;
end;
_LapeException(Msg, NullDocPos, Hint);
end;
end.