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# ddmd.parse

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

Source: parse.d

PREC[TOKMAX] `precedence`;
  Set operator `precedence` for each operator.
class `Parser`(AST): Lexer;
  this(Loc `loc`, AST.Module `_module`, const(char)[] `input`, bool `doDocComment`);
    Use this constructor for string mixins.

    Input: `loc` location in source file of mixin

  AST.Dsymbols* `parseAutoDeclarations`(StorageClass `storageClass`, const(char)* `comment`);
    Parse auto declarations of the form: `storageClass` ident = init, ident = init, ... ; and return the array of them. Starts with token on the first ident. Ends with scanner past closing ';'
  AST.Dsymbols* `parseBlock`(AST.Dsymbol* `pLastDecl`, PrefixAttributes!AST* `pAttrs` = null);
    Parse declarations after an align, protection, or extern decl.
  StorageClass `appendStorageClass`(StorageClass `storageClass`, StorageClass `stc`, bool `deprec` = false);
    Give error on redundant/conflicting storage class.

    TODO: remove deprecation in 2.068 and keep only error

  StorageClass `parseAttribute`(AST.Expressions** `pudas`);
    Parse attribute, lexer is on '@'.

    Input: `pudas` array of UDAs to append to

    Returns:
    storage class if a predefined attribute; also scanner remains on identifier. 0 if not a predefined attribute *`pudas` set if user defined attribute, scanner is past UDA *`pudas` NULL if not a user defined attribute
  StorageClass `parsePostfix`(StorageClass `storageClass`, AST.Expressions** `pudas`);
    Parse const/immutable/shared/inout/nothrow/pure postfix
  AST.Expression `parseConstraint`();
    Parse constraint. Constraint is of the form: if ( ConstraintExpression )
  AST.TemplateDeclaration `parseTemplateDeclaration`(bool `ismixin` = false);
    Parse a TemplateDeclaration.
  AST.TemplateParameters* `parseTemplateParameterList`(int `flag` = 0);
    Parse template parameter list.

    Input: `flag` 0: parsing "( list )" 1: parsing non-empty "list )"

  AST.Dsymbol `parseMixin`();
    Parse template mixin. mixin Foo; mixin Foo!(args); mixin a.b.c!(args).Foo!(args); mixin Foo!(args) identifier; mixin typeof(expr).identifier!(args);
  AST.Objects* `parseTemplateArguments`();
    Parse template arguments.

    Input: current token is opening '!'

    Output: current token is one after closing ')'

  AST.Objects* `parseTemplateArgumentList`();
    Parse template argument list.

    Input: current token is opening '(', or ',' for _traits

    Output: current token is one after closing ')'

  AST.Objects* `parseTemplateSingleArgument`();
    Parse single template argument, to support the syntax: foo!arg

    Input: current token is the arg

  AST.StaticAssert `parseStaticAssert`();
    Parse a static assertion. Current token is 'static'.
  AST.TypeQualified `parseTypeof`();
    Parse typeof(expression). Current token is on the 'typeof'.
  AST.Type `parseVector`();
    Parse _vector(type). Current token is on the '_vector'.
  LINK `parseLinkage`(AST.Identifiers** `pidents`, out CPPMANGLE `cppmangle`);

    Parse: extern (linkage) extern (C++, namespaces) The parser is on the 'extern' token.

  AST.Identifiers* `parseQualifiedIdentifier`(const(char)* `entity`);
    Parse ident1.ident2.ident3
    Parameters:

    const(char)* `entity` | what qualified identifier is expected to resolve into. Used only for better error message

    Returns:
    array of identifiers with actual qualified one stored last
  AST.Condition `parseDebugCondition`();
    Parse a debug conditional
  AST.Condition `parseVersionCondition`();
    Parse a version conditional
  AST.Condition `parseStaticIfCondition`();
    static if (expression) body else body Current token is 'static'.
  AST.Dsymbol `parseCtor`(PrefixAttributes!AST* `pAttrs`);
    Parse a constructor definition: this(parameters) { body } or postblit: this(this) { body } or constructor template: this(templateparameters)(parameters) { body } Current token is 'this'.
  AST.Dsymbol `parseDtor`(PrefixAttributes!AST* `pAttrs`);
    Parse a destructor definition: ~this() { body } Current token is '~'.
  AST.Dsymbol `parseStaticCtor`(PrefixAttributes!AST* `pAttrs`);
    Parse a static constructor definition: static this() { body } Current token is 'static'.
  AST.Dsymbol `parseStaticDtor`(PrefixAttributes!AST* `pAttrs`);
    Parse a static destructor definition: static ~this() { body } Current token is 'static'.
  AST.Dsymbol `parseSharedStaticCtor`(PrefixAttributes!AST* `pAttrs`);
    Parse a shared static constructor definition: shared static this() { body } Current token is 'shared'.
  AST.Dsymbol `parseSharedStaticDtor`(PrefixAttributes!AST* `pAttrs`);
    Parse a shared static destructor definition: shared static ~this() { body } Current token is 'shared'.
  AST.Dsymbol `parseInvariant`(PrefixAttributes!AST* `pAttrs`);
    Parse an invariant definition: invariant() { body } Current token is 'invariant'.
  AST.Dsymbol `parseUnitTest`(PrefixAttributes!AST* `pAttrs`);
    Parse a unittest definition: unittest { body } Current token is 'unittest'.
  AST.Dsymbol `parseNew`(PrefixAttributes!AST* `pAttrs`);
    Parse a new definition: new(parameters) { body } Current token is 'new'.
  AST.Dsymbol `parseDelete`(PrefixAttributes!AST* `pAttrs`);
    Parse a delete definition: delete(parameters) { body } Current token is 'delete'.
  AST.Parameters* `parseParameters`(int* `pvarargs`, AST.TemplateParameters** `tpl` = null);
    Parse parameter list.
  AST.EnumDeclaration `parseEnum`();
  AST.Dsymbol `parseAggregate`();
    Parse struct, union, interface, class.
  AST.BaseClasses* `parseBaseClasses`();
  AST.Type `parseBasicType2`(AST.Type `t`);
    Parse things that follow the initial type `t`. `t` * `t` [] `t` [type] `t` [expression] `t` [expression .. expression] `t` function `t` delegate
  AST.Dsymbols* `parseDeclarations`(bool `autodecl`, PrefixAttributes!AST* `pAttrs`, const(char)* `comment`);
    Parse Declarations. These can be: 1. declarations at global/class level 2. declarations at statement level Return array of Declaration *'s.
  AST.FuncDeclaration `parseContracts`(AST.FuncDeclaration `f`);
    Parse contracts following function declaration.
  void `checkDanglingElse`(Loc `elseloc`);
  ParseForeachRet!(isStatic, isDecl) `parseForeach`(bool isStatic, bool isDecl)(Loc `loc`, ParseForeachArgs!(isStatic, isDecl) `args`);
    Parses foreach statements, static foreach statements and static foreach declarations. The template parameter isStatic is `true`, iff a static foreach should be parsed. If isStatic is `true`, isDecl can be `true` to indicate that a static foreach declaration should be parsed.
  AST.Statement `parseStatement`(int `flags`, const(char)** `endPtr` = null, Loc* `pEndloc` = null);

    Input: `flags` PSxxxx

    Output: `pEndloc` if { ... statements ... }, store location of closing brace, otherwise loc of last token of statement

  AST.Initializer `parseInitializer`();
    Parse initializer for variable declaration.
  AST.Expression `parseDefaultInitExp`();
    Parses default argument initializer expression that is an assign expression, with special handling for __FILE__, _FILE_DIR__, __LINE__, __MODULE__, __FUNCTION__, and __PRETTY_FUNCTION__.
  bool `isDeclaration`(Token* `t`, NeedDeclaratorId `needId`, TOK `endtok`, Token** `pt`);
    Determine if the scanner is sitting on the start of a declaration.
    Parameters:

    Output: if *`pt` is not NULL, it is set to the ending token, which would be `endtok`

  bool `skipParens`(Token* `t`, Token** `pt`);
    Skip parens, brackets.

    Input: `t` is on opening (

    Output: *`pt` is set to closing token, which is ')' on success

    Returns:
    `true` successful `false` some parsing error
  bool `skipAttributes`(Token* `t`, Token** `pt`);
    Skip attributes.

    Input: `t` is on a candidate attribute

    Output: *`pt` is set to first non-attribute token on success

    Returns:
    `true` successful `false` some parsing error
  AST.Expression `parsePrimaryExp`();
    Expression Parser
  AST.Expressions* `parseArguments`();
    Collect argument list. Assume current token is ',', '(' or '['.
  AST.Expression `parseNewExp`(AST.Expression `thisexp`);
  void `addComment`(AST.Dsymbol `s`, const(char)* `blockComment`);

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