Add equal-length constraints & implement UnaryExpressions (#35)

* add segLen help to lang std

* adding helpers functions to sketchConstraints

* update tokeniser tests because they were annoying me not being 100%

* compare async lexer with sync lexer instead

* add helper functions

* remove unneeded nesting

* update add ast modifier function for angledLine

* initial equal ast modification

It adds a tag to the primary line, and converts any secondary lines to angledLine, but doesn't reference the taged/primary line yet

* Update fn call with refernce to previous line using segLen

* add test for giveSketchFnCallTag

* fix excutor bug, executing call expression in array expression

* fix small issue in executor

* add CallExpressions to BinaryExpressions

* add unary Expressions

* tweaks to unaryExpression logic

* add recasting for unaryExpressions and CallExpressions in BinaryExpressions

* ensure pipe substitution info is passed down to unary expressions and others

* allow binary expressions in function argumentns

* inital setup, new way of organising sketch fn transforms

Starting with equal length

* overhaul equalLength button

* add equal length support for angledLine

* line with one variable supports signed legLength

* fix indentation when recasting long arrayExpressions in a pipeExpression

* improve modifyAst consision

* further modify ast tidy

* equalLength transfroms far angledLineOfXLength

* add transforms for line-yRelative

* add equal constraint for angledLineOfYLength

* quick test fix

* add equal length constrain transforms for lineTo

* add equal length constraints for angledLineToX

* add equalLength constraints for angledLineToY

* test tidy

* setup new vertical-horizontal constraints

* Add equal Length constraints for vertical/horizontal lines

* migrate old tests, and refactor callback tag

* tweaks and refactor horzVert component

* fix leg len with small negative leg length

src/Toolbar.tsx

@@ -2,6 +2,7 @@ import { useStore, toolTips } from './useStore'
 import { extrudeSketch, sketchOnExtrudedFace } from './lang/modifyAst'
 import { getNodePathFromSourceRange } from './lang/abstractSyntaxTree'
 import { HorzVert } from './components/Toolbar/HorzVert'
+import { Equal } from './components/Toolbar/Equal'
 
 export const Toolbar = () => {
   const {
@@ -152,7 +153,9 @@ export const Toolbar = () => {
         )
       })}
       <br></br>
-      <HorzVert />
+      <HorzVert horOrVert="horizontal" />
+      <HorzVert horOrVert="vertical" />
+      <Equal />
     </div>
   )
 }