Feature request: Advanced constructs #157

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1. Monniasza commented on Jun 16, 2020

   

   Monniasza

   on Jun 16, 2020

   Last edited by Monniasza

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   Strings must be now explicitly stated either by single or double quotation marks, otherwise, they will be treated as variables, which might cause errors.

   To create a new key, you must place '+' or '$' before the setter

   All other existing syntax will be preserved

   Functions

   • getVar(variable) - get a variable, starting here
   • getVarRoot(variable) - get a variable by the name, starting from root
     or key correspondingly. The first parameter is optional and is used to track the number of calls.
   • Variables belonging to the local node are obtained by simply typing their name.
   • To get variables from ancestors, use ##$...$ instead.
     regexp(pattern,string) - run regexp expression on a string
   • sin, cos, tan, log10, ln, log2, expE, exp10, mod, exp, sec, csc, sqrt, curt, root, log - math functions
   • getKey(...) :
     • 2 inputs: name, index - get a single key by index
     • 1 input: name - get all keys by name
     • 1 input: key - get key's value
     • no inputs - get all keys under all names
   • getKeyValue(...): Like getKey(...), but gets values, not the keys themselves.
   • setKey(...) :
     • 3 inputs: key name, index, value - set given key at the given index to the given value
     • 2 inputs: key, value: sets given a key to a given value
     • 2 inputs: keys, value: sets all given keys to a single value
     • 2 inputs: keys, values: sets keys to the corresponding values
     • 2 inputs: key name, values: sets keys under given name to the corresponding values
     • 2 inputs: key name, value: sets keys under given name to a single value
     • If you want to set multiple keys to a list, use setKeyDuplicate function
   • setKeyDuplicate(...):
     • 2 inputs: key name, value: sets keys under given name to a single value
     • 2 inputs: keys, value: sets all given keys to a single value
   • call(func, inputs): calls a function with given list of inputs
   • getKey(...) :
     • 2 inputs: name, index - get a single key by index
     • 1 input: name - get all keys by name
     • 1 input: key - get key's value
     • no inputs - get all keys under all names
   • getNodeValue(...): Like getNode(...), but gets values, not the nodes themselves.
   • setNode(...) :
     • 3 inputs: node name, index, value - set given node at the given index to the given value
     • 2 inputs: node, value: sets given a node to a given value
     • 2 inputs: nodes, value: sets all given nodes to a single value
     • 2 inputs: nodes, values: sets nodes to the corresponding values
     • 2 inputs: node name, values: sets nodes under given name to the corresponding values
     • 2 inputs: node name, value: sets nodes under given name to a single value
     • If you want to set multiple nodes to a list, use setKeyDuplicate function
   • setNodeDuplicate(...):
     • 2 inputs: node name, value: sets nodes under given name to a single value
     • 2 inputs: nodes, value: sets all given nodes to a single value
       Setter prefixes

   ---

   '$' as a modifier - creates a temporary variable
   '$$' as a modifier - creates a long-term variable, but it is removed after all scripts finish.

   Basic data types

   String, node, key, number, boolean, list, anonymous function

   Advanced data types

   Achieved through specialized functions.

   Operators

   • + adddition
   • - substraction
   • * multiplication
   • / division
   • ^ exponent
   • | OR
   • ! NOT
   • & AND
   • \ XOR
   • !| NOR
   • !& NAND
   • !\ XNOR
   • = equal
   • > more
   • < less
   • <= !> not more
   • >= !< not less
   • <> != not equal

   Grouping

   • () parentheses
   • <% ... %> code sections (they do not start a new node).
   • [[...]] - list

   Why double brackets?

   Double symbols are much rarer in the text - to say text explicitly, use quotation marks.

   Where?

   It will need a new file format - which distinguishes it from simpler patches.
   Suggestions for file extension:

   • mm - from 'module manager'
   • akp - from 'advanced kerbal patch'
   • kscript - from 'kerbal script'
   • kpscript - from 'kerbal patch script'

   Why?

   • KSP API is too complex for beginners
   • Existing capabilities are insufficient for extremely advanced users

   How?

   Existing patches should not be called 'scripts' - they will be more advanced form of data.

   Constructs

   • Define function: FUNCTIONDEF[...] <%...%>. Place inputs within square brackets, and in double curly brackets place code. The FUNCTIONDEF is a reserved name in this programming language (but not in CFG files). The first input names the function, following ones are input variable names.
   • Define anonymous function: FUNCTIONANONYM[...] <%...%>. Place inputs within square brackets, and in double curly brackets place code. The FUNCTIONANONYM is a reserved name in this programming language (but not in CFG files).
   • for($x = 0; #$x# < 10; @x += 1) - a 'for' loop
   • foreach($x = 0;@NODE[y]) <%...%> or foreach($x = 0;#key) <%...%>and - runs an action for every node or key
   • if(cond) <%...%> elseif(cond2) <%...%>} else <%...%>} - conditional statement
   • fornode(node) <%...%> - run given code for a given node
   • `try <%...%> catch($exc) <%...%> - if first block throws an error or exception, call second block

   '-' with text

   "qwertyuiop" - 3 = "qwertyu"
   3 - "qwertyuiop" = "rtyuiop"
   3 - "qwertyuiop" - 3 = "rtyu"

   Remove the last instance:
   "anobnoa" -< "no" = "anoba" Remove last instance
   "anobnoa" >- "no" = "abnoa" Remove first instance
   "anobnoa" - "no" = "aba" Remove all instances