More pretty printer

src/ast.ts

@@ -178,6 +178,8 @@ const infixOps: { [key: string]: string } = {
     pow: '^', eq: '==', neq: '!=', gt: '>', lt: '<', gte: '>=', lte: '<='
 };
 
+const isInfix = (a: AST) => a.kind === 'apply' && a.func.kind === 'variable' && a.args.length === 2 && infixOps[a.func.name];
+
 export function prettyPrint(ast: AST, indent = 0): string {
     const i = '  '.repeat(indent);
 
@@ -201,25 +203,33 @@ export function prettyPrint(ast: AST, indent = 0): string {
 
         case 'apply':
             // infix ops
-            if (ast.func.kind === 'variable' && ast.args.length === 2 && infixOps[ast.func.name]) {
+            if (isInfix(ast)) {
-               const left = prettyPrint(ast.args[0], indent);
+                const wrapIfNeeded = (a: AST) => {
-               const right = prettyPrint(ast.args[1], indent);
+                    const printed = prettyPrint(a, indent);
-               return `${left} ${infixOps[ast.func.name]} ${right}`;
+                    if (a.kind === 'apply' || a.kind === 'lambda' || a.kind === 'match' || a.kind === 'let') {
+                        return `(${printed})`;
+                    }
+                    return `${printed}`;
+
+                }
+                const left = wrapIfNeeded(ast.args[0]);
+                const right = wrapIfNeeded(ast.args[1]);
+                return `${left} ${infixOps[(ast.func as Variable).name]} ${right}`;
             }
 
             const func = prettyPrint(ast.func, indent);
             const args = ast.args.map(a => {
                 const printed = prettyPrint(a, indent);
-                if (a.kind === 'lambda' || a.kind === 'match' || a.kind === 'let' || a.kind === 'rebind') {
+                if (a.kind === 'lambda' || a.kind === 'match' || a.kind === 'let' || a.kind === 'rebind' || a.kind === 'apply') {
                     return `(${printed})`;
                 }
                 return printed;
             }).join(' ');
 
-            if (ast.func.kind === 'variable' || ast.func.kind === 'constructor') {
+            if (ast.func.kind === 'lambda' || ast.func.kind === 'match' || ast.func.kind === 'let') {
-            return `${func} ${args}`
+                return `(${func} ${args})`
             }
-            return `(${func} ${args})`
+            return `${func} ${args}`
 
         case 'let':
             const sep = indent === 0 ? '\n\n' : '\n';

src/cg/03-ui-components.cg

@@ -134,8 +134,8 @@ scrollable = config \
         | False \ []),
       ...(showHBar
         | True \ [ui.positioned {
-            x = c.h - 4,
+            x = hBarX,
-            y = hBarX,
+            y = c.h - 4,
             child = ui.rect { h = 4, w = hBarWidth, color = "rgba(255,255,255,0.3)", radius = 2 }
           }]
         | False \ [])

src/cg/06-textEditor.cg

@@ -1,3 +1,4 @@
+textEditorBuffers = [];
 textEditor = name \
   # defaults = {};
   # c = { ...defaults, ...config };