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# dmd.frontend

Contains high-level interfaces for interacting with DMD as a library.
Authors:
Walter Bright
License:
Boost License 1.0

Source id.d

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

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

struct `Diagnostics`;
  Contains aggregated diagnostics information.
  immutable uint `errors`;
    Number of errors diagnosed
  immutable uint `warnings`;
    Number of warnings diagnosed
  immutable bool `hasErrors`();
    Returns:
    true if errors have been diagnosed
  immutable bool `hasWarnings`();
    Returns:
    true if warnings have been diagnosed
enum `ContractChecking`: CHECKENABLE;
  Indicates the checking state of various contracts.
  `default_`
    Initial value
  `disabled`
    Never do checking
  `enabled`
    Always do checking
  `enabledInSafe`
    Only do checking in @safe functions
struct `ContractChecks`;
  Indicates which contracts should be checked or not.
  ContractChecking `precondition`;
    Precondition checks (in contract).
  ContractChecking `invariant_`;
    Invariant checks.
  ContractChecking `postcondition`;
    Postcondition checks (out contract).
  ContractChecking `arrayBounds`;
    Array bound checks.
  ContractChecking `assert_`;
    Assert checks.
  ContractChecking `switchError`;
    Switch error checks.
void `deinitializeDMD`();
  Deinitializes the global variables of the DMD compiler.
  This can be used to restore the state set by initDMD to its original state. Useful if there's a need for multiple sessions of the DMD compiler in the same application.
void `addImport`(const(char)[] `path`);
  Add import path to the global.`path`.
  Parameters:

  const(char)[] `path` | import to add

void `addStringImport`(const(char)[] `path`);
  Add string import path to global.filePath.
  Parameters:

  const(char)[] `path` | string import to add

string `findDMDConfig`(const(char)[] `dmdFilePath`);
  Searches for a dmd.conf.
  Parameters:

  const(char)[] `dmdFilePath` | path to the current DMD executable

  Returns:
  full path to the found dmd.conf, null otherwise.
string `findLDCConfig`(const(char)[] `ldcFilePath`);
  Searches for a ldc2.conf.
  Parameters:

  const(char)[] `ldcFilePath` | path to the current LDC executable

  Returns:
  full path to the found ldc2.conf, null otherwise.
string `determineDefaultCompiler`();
  Detect the currently active compiler.
  Returns:
  full path to the executable of the found compiler, null otherwise.
auto `parseImportPathsFromConfig`(const(char)[] `iniFile`, const(char)[] `execDir`);
  Parses a dmd.conf or ldc2.conf config file and returns defined import paths.
  Parameters:

  const(char)[] `iniFile` | iniFile to parse imports from
  const(char)[] `execDir` | directory of the compiler binary

  Returns:
  forward range of import paths found in `iniFile`
auto `findImportPaths`();
  Finds a dmd.conf and parses it for import paths. This depends on the $DMD environment variable. If $DMD is set to ldmd, it will try to detect and parse a ldc2.conf instead.
  Returns:
  A forward range of normalized import paths.
  See Also:
  determineDefaultCompiler, parseImportPathsFromConfig
Tuple!(Module, "module_", Diagnostics, "diagnostics") `parseModule`(AST = ASTCodegen)(const(char)[] `fileName`, const(char)[] `code` = null);
  Parse a module from a string.
  Parameters:

  const(char)[] `fileName` | file to parse
  const(char)[] `code` | text to use instead of opening the file

  Returns:
  the parsed module object
void `fullSemantic`(Module `m`);
  Run full semantic analysis on a module.
string `prettyPrint`(Module `m`);
  Pretty print a module.
  Returns:
  Pretty printed module as string.
abstract class `DiagnosticReporter`;
  Interface for diagnostic reporting.
  abstract nothrow int `errorCount`();
    Returns:
    the number of errors that occurred during lexing or parsing.
  abstract nothrow int `warningCount`();
    Returns:
    the number of warnings that occurred during lexing or parsing.
  abstract nothrow int `deprecationCount`();
    Returns:
    the number of deprecations that occurred during lexing or parsing.
  abstract nothrow bool `error`(ref const Loc `loc`, const(char)* `format`, va_list `args`, const(char)* `p1`, const(char)* `p2`);
    Reports an error message.
    Parameters:

    Loc `loc` | Location of error
    const(char)* `format` | format string for error
    va_list `args` | printf-style variadic arguments
    const(char)* `p1` | additional message prefix
    const(char)* `p2` | additional message prefix

    Returns:
    false if the message should also be printed to stderr, true otherwise
  abstract nothrow bool `errorSupplemental`(ref const Loc `loc`, const(char)* `format`, va_list `args`, const(char)* `p1`, const(char)* `p2`);
    Reports additional details about an error message.
    Parameters:

    Loc `loc` | Location of error
    const(char)* `format` | format string for supplemental message
    va_list `args` | printf-style variadic arguments
    const(char)* `p1` | additional message prefix
    const(char)* `p2` | additional message prefix

    Returns:
    false if the message should also be printed to stderr, true otherwise
  abstract nothrow bool `warning`(ref const Loc `loc`, const(char)* `format`, va_list `args`, const(char)* `p1`, const(char)* `p2`);
    Reports a warning message.
    Parameters:

    Loc `loc` | Location of warning
    const(char)* `format` | format string for warning
    va_list `args` | printf-style variadic arguments
    const(char)* `p1` | additional message prefix
    const(char)* `p2` | additional message prefix

    Returns:
    false if the message should also be printed to stderr, true otherwise
  abstract nothrow bool `warningSupplemental`(ref const Loc `loc`, const(char)* `format`, va_list `args`, const(char)* `p1`, const(char)* `p2`);
    Reports additional details about a warning message.
    Parameters:

    Loc `loc` | Location of warning
    const(char)* `format` | format string for supplemental message
    va_list `args` | printf-style variadic arguments
    const(char)* `p1` | additional message prefix
    const(char)* `p2` | additional message prefix

    Returns:
    false if the message should also be printed to stderr, true otherwise
  abstract nothrow bool `deprecation`(ref const Loc `loc`, const(char)* `format`, va_list `args`, const(char)* `p1`, const(char)* `p2`);
    Reports a deprecation message.
    Parameters:

    Loc `loc` | Location of the deprecation
    const(char)* `format` | format string for the deprecation
    va_list `args` | printf-style variadic arguments
    const(char)* `p1` | additional message prefix
    const(char)* `p2` | additional message prefix

    Returns:
    false if the message should also be printed to stderr, true otherwise
  abstract nothrow bool `deprecationSupplemental`(ref const Loc `loc`, const(char)* `format`, va_list `args`, const(char)* `p1`, const(char)* `p2`);
    Reports additional details about a deprecation message.
    Parameters:

    Loc `loc` | Location of deprecation
    const(char)* `format` | format string for supplemental message
    va_list `args` | printf-style variadic arguments
    const(char)* `p1` | additional message prefix
    const(char)* `p2` | additional message prefix

    Returns:
    false if the message should also be printed to stderr, true otherwise
class `StderrDiagnosticReporter`: dmd.frontend.DiagnosticReporter;
  Diagnostic reporter which prints the diagnostic messages to stderr.
  This is usually the default diagnostic reporter.
  nothrow this(DiagnosticReporting `useDeprecated`);
    Initializes this object.
    Parameters:

    DiagnosticReporting `useDeprecated` | indicates how deprecation diagnostics should be handled

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