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# dmd.lexer

Compiler implementation of the D programming language.
Authors:
Walter Bright
License:
Boost License 1.0

Source lexer.d

Documentation https://dlang.org/phobos/dmd_lexer.html

Coverage https://codecov.io/gh/dlang/dmd/src/master/src/dmd/lexer.d

class `Lexer`;
  this(const(char)* `filename`, const(char)* `base`, size_t `begoffset`, size_t `endoffset`, bool `doDocComment`, bool `commentToken`, DiagnosticReporter `diagnosticReporter`);
    Creates a Lexer for the source code base[begoffset..endoffset+1]. The last character, base[endoffset], must be null (0) or EOF (0x1A).
    Parameters:

    const(char)* `filename` | used for error messages
    const(char)* `base` | source code, must be terminated by a null (0) or EOF (0x1A) character
    size_t `begoffset` | starting offset into base[]
    size_t `endoffset` | the last offset to read into base[]
    bool `doDocComment` | handle documentation comments
    bool `commentToken` | comments become TOK.comment's
    DiagnosticReporter `diagnosticReporter` | the diagnostic reporter to use

  final bool `errors`();
    Returns:
    true if any errors occurred during lexing or parsing.
  pure nothrow @safe Token* `allocateToken`();
    Returns:
    a newly allocated Token.
  final TOK `peekNext`();
    Look ahead at next token's value.
  final TOK `peekNext2`();
    Look 2 tokens ahead at value.
  final void `scan`(Token* `t`);
    Turn next token in buffer into a token.
  final Token* `peekPastParen`(Token* `tk`);
    tk is on the opening (. Look ahead and return token that is past the closing ).
  static const(char)* `combineComments`(const(char)* `c1`, const(char)* `c2`, bool `newParagraph`);
    Combine two document comments into one, separated by an extra newline if newParagraph is true.

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