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Class to parse the contents of a stream containing text data.
Source position: classesh.inc line 1619
type TParser = class(TObject) |
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public |
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constructor Create(); |
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Creates a new parser instance. |
destructor Destroy; override; |
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Destroys the parser instance. |
procedure CheckToken(); |
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Checks whether the token if of the given type. |
procedure CheckTokenSymbol(); |
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Checks whether the token equals the given symbol |
procedure Error(); |
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Raises an EParserError exception with the given message |
procedure ErrorFmt(); |
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Raises an EParserError exception and formats the message. |
procedure ErrorStr(); |
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Raises an EParserError exception with the given message |
procedure HexToBinary(); |
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Writes hexadecimal data to a stream. |
function NextToken; |
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Reads the next token and returns its type. |
function SourcePos; |
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Returns the current position in the stream. |
function TokenComponentIdent; |
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Returns the path of a subcomponent starting from the current token. |
function TokenFloat; |
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Returns the current token as a float. |
function TokenInt; |
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Returns the current token as an integer. |
function TokenString; |
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Returns the current token as a string. |
function TokenWideString; |
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Returns the current token as a widestring |
function TokenSymbolIs(); |
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Returns True if the token equals the given symbol. |
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The type of a float token. |
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property SourceLine: Integer; [r] |
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Current source line number. |
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The type of the current token. |
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end; |
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Class to parse the contents of a stream containing text data. |
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Base class of all classes. |
This class breaks a stream of text data in tokens. Its primary use is to help reading the contents of a form file (usually a file with dfm, xfm or lfm extension), and for this reason it isn't suitable to be used as a general parser.
The parser is always positioned on a certain token, whose type is stored in the Token property. Various methods are provided to obtain the token value in the desired format.
To advance to the next token, invoke NextToken method.
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The type of the current token. |
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Reads the next token and returns its type. |