ellipsis-expression.h File Reference

#include "token/ellipsis-tlist.h"

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Functions
ellipsis‿token *	ellipsis‿expression‿evaluate (ellipsis‿token‿list *)
bool	ellipsis‿expression‿make_integer (ellipsis‿token *t)
void	ellipsis‿expression‿resolve_defined (ellipsis‿token‿list *in, ellipsis‿token‿list *out)

Function Documentation

ellipsis‿expression‿evaluate()

ellipsis‿token * ellipsis‿expression‿evaluate

(

ellipsis‿token‿list *

expr

)

This function uses a trick to ensure that only operators of the same priority appear on the same level of parenthesis. It consists of surrounding the expression with a large number of matching pairs of parenthesis and then surrounding operators by anti-matching pairs. For example an expression with addition and multiplication

a * b + c

is then replaced by

(...(( a )*( b ))+(( c ))...) ^^^ * has priority 1 ^^^^^ + has priority 2

(...(( a )*( b ))+(( c ))...) ^^^^^^^^^^^ inner expression (...( ab )+(( c ))...) ^^^^^^^^^^^^^^^^^^^^^ outer expression

start inner defer anchor at level 1

DEFER_TYPE needs a semicolon

defer needs braces and a semicolon

defer needs braces and a semicolon

defer needs braces and a semicolon

end inner defer anchor, level 1

References ellipsis‿expression‿recurse(), ellipsis‿token‿list‿all(), ellipsis‿token‿list‿append(), ellipsis‿token‿list‿close(), ellipsis‿token‿list‿destroy(), exp_signed, exp_unsigned, ellipsis‿token::next, and punctuator.

Referenced by _Atomic(), ellipsis‿macros‿cb‿evaluate(), and evaluate_expression().

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ellipsis‿expression‿make_integer()

bool ellipsis‿expression‿make_integer

(

ellipsis‿token *

t

)

References ellipsis‿str32‿dup, exp_signed, exp_unsigned, and numeral.

Referenced by ellipsis‿directive‿line_common(), and ellipsis‿expression‿prefix().

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ellipsis‿expression‿resolve_defined()

void ellipsis‿expression‿resolve_defined	(	ellipsis‿token‿list *	in,
		ellipsis‿token‿list *	out
	)

start inner defer anchor at level 1

defer needs braces and a semicolon

start inner defer anchor at level 2

defer needs braces and a semicolon

end inner defer anchor, level 2

start inner defer anchor at level 2

defer needs braces and a semicolon

end inner defer anchor, level 2

end inner defer anchor, level 1

References ellipsis‿token::callback, ellipsis‿token::cat, ellipsis‿token::contents, ellipsis‿macros‿find(), ellipsis‿macros‿functions_find(), ellipsis‿str32‿delete(), ellipsis‿token‿list‿all(), ellipsis‿token‿list‿append(), ellipsis‿token‿list‿close(), ellipsis‿token‿list‿collect_call(), ellipsis‿token‿list‿destroy(), ellipsis‿token‿list‿pop(), ellipsis‿token‿list‿top(), ELLIPSIS_CONTRACT, exp_signed, and ellipsis‿str32::length.

Referenced by ellipsis‿macros‿cb‿evaluate(), and evaluate_expression().

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