Domain Languages

These are small, special purpose evaluators. More...

Functions
UStatus	ur_parseBlock (UThread *ut, UBuffer *blk, UIndex start, UIndex end, UIndex *parsePos, const UBuffer *ruleBlk, UStatus(*eval)(UThread *, const UCell *))
	Parse a block using the parse language. More...
UStatus	ur_parseString (UThread *ut, UBuffer *str, UIndex start, UIndex end, UIndex *parsePos, const UBuffer *ruleBlk, UStatus(*eval)(UThread *, const UCell *), int matchCase)
	Parse a string or binary using the parse language. More...

Detailed Description

These are small, special purpose evaluators.

Function Documentation

ur_parseBlock()

UStatus ur_parseBlock	(	UThread *	ut,
		UBuffer *	blk,
		UIndex	start,
		UIndex	end,
		UIndex *	parsePos,
		const UBuffer *	ruleBlk,
		UStatus(*)(UThread *, const UCell *)	eval
	)

Parse a block using the parse language.

Parameters

blk	Input to parse, which must be in thread storage.
start	Starting cell in input.
end	Ending cell in input.
parsePos	Index in input where parse ended.
ruleBlk	Rules in the parse language. This block must be held and remain unchanged during the parsing.
eval	Evaluator callback to do paren values in rule. The callback must return UR_OK/UR_THROW.

Returns

UR_OK or UR_THROW.

ur_parseString()

UStatus ur_parseString	(	UThread *	ut,
		UBuffer *	str,
		UIndex	start,
		UIndex	end,
		UIndex *	parsePos,
		const UBuffer *	ruleBlk,
		UStatus(*)(UThread *, const UCell *)	eval,
		int	matchCase
	)

Parse a string or binary using the parse language.

Note

UR_ENC_UTF8 strings are accepted but multi-byte characters are not handled.

Parameters

str	Input to parse, which must be in thread storage.
start	Starting character in input.
end	Ending character in input.
parsePos	Index in input where parse ended.
ruleBlk	Rules in the parse language. This block must be held and remain unchanged during the parsing.
eval	Evaluator callback to do paren values in rule. The callback must return UR_OK/UR_THROW.
matchCase	Use character case when comparing strings.

Returns

UR_OK or UR_THROW.