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[[Category:SCI Pages]]
[[Official SCI Documentation]]<br />

<div align="center">
Chapter:
[[SCI Parser Programmer's Reference/Introduction|1]] |
[[SCI Parser Programmer's Reference/User Parse Trees|2]] |
[[SCI Parser Programmer's Reference/Said Specs|3]] |
[[SCI Parser Programmer's Reference/Said Syntax|4]] |
[[SCI Parser Programmer's Reference/Said Spec Trees|5]] |
[[SCI Parser Programmer's Reference/Tree Matching|6]] |
[[SCI Parser Programmer's Reference/Examples|7]] |
[[SCI Parser Programmer's Reference/Index|Index]]
</div><br />

<div align="center"><span style="font-size: 22pt">Said Syntax</span><br />
''Author: [[Pablo Ghenis]]''<br />
''Date: 21 July 1988 9:56:56 am''</div>

 

==<br /> Said syntax ==

Said-specs are written in a sub-language with its own syntax and operators to produce expressions not unlike those we use for arithmetic.

The main concept implemented by the "Said-er" is:

===<br /> VERB/DIRECT OBJECT/INDIRECT OBJECT ===

Note that the slash is a part of the description of a dobj or iobj, not a detached separator.

Each part can be made OPTIONAL by enclosing it in brackets. This is also true for any subpart. Thus 'look [ /rock ]' means a phrase with verb 'look' and an optional direct object that should be 'rock' if present. Note that the slash is INSIDE the brackets.

===<br /> MODIFIERS: ===

Signaled using "<", a given root can have multiple modifiers as in "sit down on bed" which can be specified by 'sit<down<on/bed' since the two prepositions are modifiers to the verb.

In general, adverbs and prepositions modify verbs, adjectives modify nouns or other adjectives and nouns modify other nouns.

===<br /> ALTERNATIVES: ===

Let's say we want to respond the same way to either
"start the car" and
"turn on the car"
this can be done with OR alternatives:
'start,(turn<on)/car'

The comma means "OR". Notice the parenthesis surrounding turn<on; they are required because "," has higher PRECEDENCE than "<". This is just like common arithmetic expressions, as in 2*3+4 versus 2*(3+4) where the parenthesis make the difference between getting 10 or 14 because "*" has higher precedence than "+"

==<br /> References ==

<references />

==<br /> Also See ==

*

 

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