Don't define _FORTIFY_SOURCE on MinGW

[deliverable/binutils-gdb.git] / gdb / parser-defs.h

diff --git a/gdb/parser-defs.h b/gdb/parser-defs.h
index f2bb18fd9c74ab8a2bf9a87c2232d633721a72da..d6c3b068978efed010263ad85cdea2460344fd50 100644 (file)
--- a/gdb/parser-defs.h
+++ b/gdb/parser-defs.h
@@ -1,6 +1,6 @@
 /* Parser definitions for GDB.
 
 /* Parser definitions for GDB.
 

-   Copyright (C) 1986-2019 Free Software Foundation, Inc.
+   Copyright (C) 1986-2020 Free Software Foundation, Inc.

 
    Modified from expread.y by the Department of Computer Science at the
    State University of New York at Buffalo.
 
    Modified from expread.y by the Department of Computer Science at the
    State University of New York at Buffalo.


@@ -23,14 +23,15 @@
 #if !defined (PARSER_DEFS_H)
 #define PARSER_DEFS_H 1
 
 #if !defined (PARSER_DEFS_H)
 #define PARSER_DEFS_H 1
 

-#include "common/vec.h"

 #include "expression.h"
 #include "expression.h"

+#include "symtab.h"

 
 struct block;
 struct language_defn;
 struct internalvar;
 
 struct block;
 struct language_defn;
 struct internalvar;

+class innermost_block_tracker;

 
 

-extern int parser_debug;
+extern bool parser_debug;

 
 /* A class that can be used to build a "struct expression".  */
 
 
 /* A class that can be used to build a "struct expression".  */
 


@@ -76,6 +77,22 @@ struct expr_builder
   size_t expout_ptr;
 };
 
   size_t expout_ptr;
 };
 

+/* This is used for expression completion.  */
+
+struct expr_completion_state
+{
+  /* The index of the last struct expression directly before a '.' or
+     '->'.  This is set when parsing and is only used when completing a
+     field name.  It is -1 if no dereference operation was found.  */
+  int expout_last_struct = -1;
+
+  /* If we are completing a tagged type name, this will be nonzero.  */
+  enum type_code expout_tag_completion_type = TYPE_CODE_UNDEF;
+
+  /* The token for tagged type name completion.  */
+  gdb::unique_xmalloc_ptr<char> expout_completion_name;
+};
+

 /* An instance of this type is instantiated during expression parsing,
    and passed to the appropriate parser.  It holds both inputs to the
    parser, and result.  */
 /* An instance of this type is instantiated during expression parsing,
    and passed to the appropriate parser.  It holds both inputs to the
    parser, and result.  */


@@ -89,16 +106,54 @@ struct parser_state : public expr_builder
                struct gdbarch *gdbarch,
                const struct block *context_block,
                CORE_ADDR context_pc,
                struct gdbarch *gdbarch,
                const struct block *context_block,
                CORE_ADDR context_pc,

-               int comma)
+               int comma,
+               const char *input,
+               int completion,
+               innermost_block_tracker *tracker)

     : expr_builder (lang, gdbarch),
       expression_context_block (context_block),
       expression_context_pc (context_pc),
     : expr_builder (lang, gdbarch),
       expression_context_block (context_block),
       expression_context_pc (context_pc),

-      comma_terminates (comma)
+      comma_terminates (comma),
+      lexptr (input),
+      parse_completion (completion),
+      block_tracker (tracker)

   {
   }
 
   DISABLE_COPY_AND_ASSIGN (parser_state);
 
   {
   }
 
   DISABLE_COPY_AND_ASSIGN (parser_state);
 

+  /* Begin counting arguments for a function call,
+     saving the data about any containing call.  */
+
+  void start_arglist ()
+  {
+    m_funcall_chain.push_back (arglist_len);
+    arglist_len = 0;
+  }
+
+  /* Return the number of arguments in a function call just terminated,
+     and restore the data for the containing function call.  */
+
+  int end_arglist ()
+  {
+    int val = arglist_len;
+    arglist_len = m_funcall_chain.back ();
+    m_funcall_chain.pop_back ();
+    return val;
+  }
+
+  /* Mark the current index as the starting location of a structure
+     expression.  This is used when completing on field names.  */
+
+  void mark_struct_expression ();
+
+  /* Indicate that the current parser invocation is completing a tag.
+     TAG is the type code of the tag, and PTR and LENGTH represent the
+     start of the tag name.  */
+
+  void mark_completion_tag (enum type_code tag, const char *ptr, int length);
+
+

   /* If this is nonzero, this block is used as the lexical context for
      symbol names.  */
 
   /* If this is nonzero, this block is used as the lexical context for
      symbol names.  */
 


@@ -114,6 +169,35 @@ struct parser_state : public expr_builder
   /* Nonzero means stop parsing on first comma (if not within parentheses).  */
 
   int comma_terminates;
   /* Nonzero means stop parsing on first comma (if not within parentheses).  */
 
   int comma_terminates;

+
+  /* During parsing of a C expression, the pointer to the next character
+     is in this variable.  */
+
+  const char *lexptr;
+
+  /* After a token has been recognized, this variable points to it.
+     Currently used only for error reporting.  */
+  const char *prev_lexptr = nullptr;
+
+  /* Number of arguments seen so far in innermost function call.  */
+
+  int arglist_len = 0;
+
+  /* True if parsing an expression to attempt completion.  */
+  int parse_completion;
+
+  /* Completion state is updated here.  */
+  expr_completion_state m_completion_state;
+
+  /* The innermost block tracker.  */
+  innermost_block_tracker *block_tracker;
+
+private:
+
+  /* Data structure for saving values of arglist_len for function calls whose
+     arguments contain other function calls.  */
+
+  std::vector<int> m_funcall_chain;

 };
 
 /* When parsing expressions we track the innermost block that was
 };
 
 /* When parsing expressions we track the innermost block that was


@@ -122,21 +206,12 @@ struct parser_state : public expr_builder
 class innermost_block_tracker
 {
 public:
 class innermost_block_tracker
 {
 public:

-  innermost_block_tracker ()
-    : m_types (INNERMOST_BLOCK_FOR_SYMBOLS),
+  innermost_block_tracker (innermost_block_tracker_types types
+                          = INNERMOST_BLOCK_FOR_SYMBOLS)
+    : m_types (types),

       m_innermost_block (NULL)
   { /* Nothing.  */ }
 
       m_innermost_block (NULL)
   { /* Nothing.  */ }
 

-  /* Reset the currently stored innermost block.  Usually called before
-     parsing a new expression.  As the most common case is that we only
-     want to gather the innermost block for symbols in an expression, this
-     becomes the default block tracker type.  */
-  void reset (innermost_block_tracker_types t = INNERMOST_BLOCK_FOR_SYMBOLS)
-  {
-    m_types = t;
-    m_innermost_block = NULL;
-  }
-

   /* Update the stored innermost block if the new block B is more inner
      than the currently stored block, or if no block is stored yet.  The
      type T tells us whether the block B was for a symbol or for a
   /* Update the stored innermost block if the new block B is more inner
      than the currently stored block, or if no block is stored yet.  The
      type T tells us whether the block B was for a symbol or for a


@@ -168,15 +243,6 @@ private:
   const struct block *m_innermost_block;
 };
 
   const struct block *m_innermost_block;
 };
 

-/* The innermost context required by the stack and register variables
-   we've encountered so far.  This is cleared by the expression
-   parsing functions before parsing an expression, and can queried
-   once the parse is complete.  */
-extern innermost_block_tracker innermost_block;
-
-/* Number of arguments seen so far in innermost function call.  */
-extern int arglist_len;
-

 /* A string token, either a char-string or bit-string.  Char-strings are
    used, for example, for the names of symbols.  */
 
 /* A string token, either a char-string or bit-string.  Char-strings are
    used, for example, for the names of symbols.  */
 


@@ -224,48 +290,15 @@ struct objc_class_str
     int theclass;
   };
 
     int theclass;
   };
 

-/* For parsing of complicated types.
-   An array should be preceded in the list by the size of the array.  */
-enum type_pieces
-  {
-    tp_end = -1, 
-    tp_pointer, 
-    tp_reference, 
-    tp_rvalue_reference,
-    tp_array, 
-    tp_function,
-    tp_function_with_arguments,
-    tp_const, 
-    tp_volatile, 
-    tp_space_identifier,
-    tp_type_stack,
-    tp_kind
-  };
-/* The stack can contain either an enum type_pieces or an int.  */
-union type_stack_elt
-  {
-    enum type_pieces piece;
-    int int_val;
-    struct type_stack *stack_val;
-    std::vector<struct type *> *typelist_val;
-  };
-
-/* The type stack is an instance of this structure.  */
-
-struct type_stack
-{
-  /* Elements on the stack.  */
-  std::vector<union type_stack_elt> elements;
-};
-

 /* Reverse an expression from suffix form (in which it is constructed)
    to prefix form (in which we can conveniently print or execute it).
 /* Reverse an expression from suffix form (in which it is constructed)
    to prefix form (in which we can conveniently print or execute it).

-   Ordinarily this always returns -1.  However, if EXPOUT_LAST_STRUCT
+   Ordinarily this always returns -1.  However, if LAST_STRUCT

    is not -1 (i.e., we are trying to complete a field name), it will
    return the index of the subexpression which is the left-hand-side
    is not -1 (i.e., we are trying to complete a field name), it will
    return the index of the subexpression which is the left-hand-side

-   of the struct operation at EXPOUT_LAST_STRUCT.  */
+   of the struct operation at LAST_STRUCT.  */

 
 

-extern int prefixify_expression (struct expression *expr);
+extern int prefixify_expression (struct expression *expr,
+                                int last_struct = -1);

 
 extern void write_exp_elt_opcode (struct expr_builder *, enum exp_opcode);
 
 
 extern void write_exp_elt_opcode (struct expr_builder *, enum exp_opcode);
 


@@ -296,36 +329,9 @@ extern void write_exp_msymbol (struct expr_builder *,
 
 extern void write_dollar_variable (struct parser_state *, struct stoken str);
 
 
 extern void write_dollar_variable (struct parser_state *, struct stoken str);
 

-extern void mark_struct_expression (struct expr_builder *);
-

 extern const char *find_template_name_end (const char *);
 
 extern const char *find_template_name_end (const char *);
 

-extern void start_arglist (void);
-
-extern int end_arglist (void);
-
-extern char *copy_name (struct stoken);
-
-extern void insert_type (enum type_pieces);
-
-extern void push_type (enum type_pieces);
-
-extern void push_type_int (int);
-
-extern void insert_type_address_space (struct expr_builder *, char *);
-
-extern enum type_pieces pop_type (void);
-
-extern int pop_type_int (void);
-
-extern struct type_stack *get_type_stack (void);
-
-extern struct type_stack *append_type_stack (struct type_stack *to,
-                                            struct type_stack *from);
-
-extern void push_type_stack (struct type_stack *stack);
-
-extern void push_typelist (std::vector<struct type *> *typelist);
+extern std::string copy_name (struct stoken);

 
 extern int dump_subexp (struct expression *, struct ui_file *, int);
 
 
 extern int dump_subexp (struct expression *, struct ui_file *, int);
 


@@ -344,23 +350,11 @@ extern int operator_check_standard (struct expression *exp, int pos,
 
 extern const char *op_name_standard (enum exp_opcode);
 
 
 extern const char *op_name_standard (enum exp_opcode);
 

-extern struct type *follow_types (struct type *);
-
-extern type_instance_flags follow_type_instance_flags ();
-
-extern void null_post_parser (expression_up *, int);
+extern void null_post_parser (expression_up *, int, int,
+                             innermost_block_tracker *);

 
 extern bool parse_float (const char *p, int len,
                         const struct type *type, gdb_byte *data);
 
 extern bool parse_float (const char *p, int len,
                         const struct type *type, gdb_byte *data);

-
-/* During parsing of a C expression, the pointer to the next character
-   is in this variable.  */
-
-extern const char *lexptr;
-
-/* After a token has been recognized, this variable points to it.
-   Currently used only for error reporting.  */
-extern const char *prev_lexptr;

 \f
 /* These codes indicate operator precedences for expression printing,
    least tightly binding first.  */
 \f
 /* These codes indicate operator precedences for expression printing,
    least tightly binding first.  */


@@ -456,8 +450,5 @@ extern void parser_fprintf (FILE *, const char *, ...) ATTRIBUTE_PRINTF (2, 3);
 
 extern int exp_uses_objfile (struct expression *exp, struct objfile *objfile);
 
 
 extern int exp_uses_objfile (struct expression *exp, struct objfile *objfile);
 

-extern void mark_completion_tag (enum type_code, const char *ptr,
-                                int length);
-

 #endif /* PARSER_DEFS_H */
 
 #endif /* PARSER_DEFS_H */