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Difference between revisions of "SCI/Specifications/SCI in action/Parser"
SCI/Specifications/SCI in action/Parser (view source)
Revision as of 21:02, 18 January 2009
, 21:02, 18 January 2009Merging of the SCI documentation. Work in progress.
(Merging of the SCI documentation. Work in progress.) |
(Merging of the SCI documentation. Work in progress.) |
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==Said specs== | ==Said specs== | ||
To test what the player wanted to say, SCI compares <i>T</i><sub>π</sub> with a second tree, <i>T</i><sub>Σ</sub> , which is built from a so-called Said spec. A Said spec is a variable-sized block in SCI memory which consists of a set of byte-sized operators and special tokens (stored in the range 0xf0 to 0xf9) and word groups (in big-endian notation, so that they don't conflict with the operators); it is terminated by the special token 0xff. The meanings of the operators and special tokens are as follows: | To test what the player wanted to say, SCI compares <i>T</i><sub>π</sub> with a second tree, <i>T</i><sub>Σ</sub> , which is built from a so-called Said spec. A Said spec is a variable-sized block in SCI memory which consists of a set of byte-sized operators and special tokens (stored in the range 0xf0 to 0xf9) and word groups (in big-endian notation, so that they don't conflict with the operators); it is terminated by the special token 0xff. The meanings of the operators and special tokens are as follows: | ||
{| border="1" | |||
|Operator | |||
|Byte representation | |||
|Meaning | |||
|---- | |||
|, | |||
|f0 | |||
|"OR". Used to specify alternatives to words, such as "take, get". | |||
|---- | |||
|& | |||
|f1 | |||
|Unknown. Probably used for debugging. | |||
|---- | |||
|/ | |||
|f2 | |||
|Sentence part separator. Only two of these tokens may be used, since sentences are split into a maximum of three parts. | |||
|---- | |||
|( | |||
|f3 | |||
|Used together with ')' for grouping | |||
|---- | |||
|) | |||
|f4 | |||
|See '(' | |||
|---- | |||
|[ | |||
|f5 | |||
|Used together with ']' for optional grouping. "[a]" means "either <i>a</i> or nothing". | |||
|---- | |||
|] | |||
|f6 | |||
|See '['. | |||
|---- | |||
|# | |||
|f7 | |||
|Unknown assumed to have been used for debugging, if at all. | |||
|---- | |||
|< | |||
|f8 | |||
|Semantic reference operator (as in "get < up"). | |||
|---- | |||
|> | |||
|f9 | |||
|Instructs Said() not to claim the event passed to the previous Parse() call on a match. Used for succesive matching. | |||
|} | |||
==Notes== | ==Notes== | ||
<references/> | <references/> | ||