Seem to have fixed newlines and no-parentheses calls.

src/name_analysis/second_pass.rs

@@ -1,9 +1,10 @@
 use crate::ast::node::{
-    AssignmentStatement, BacktickString, Call, CompilationUnit, ConcreteUseStatement,
-    ConcreteUseStatementSuffix, DString, Expression, ExpressionList, ExpressionStatement, Function,
-    FunctionAliasBody, FunctionBlockBody, FunctionBody, FunctionEqualsBody, GenericParameters,
-    Identifier, IdentifierExpression, IdentifierOrFqn, LValue, LValueSuffix, Literal,
-    ModuleLevelDeclaration, ObjectIndex, Parameter, Parameters, PlatformFunction, PrimitiveType,
+    AnySpaceSuffixOperator, AssignmentStatement, BacktickString, BoundSuffixOperator, Call,
+    CompilationUnit, ConcreteUseStatement, ConcreteUseStatementSuffix, DString, Expression,
+    ExpressionList, ExpressionStatement, Function, FunctionAliasBody, FunctionBlockBody,
+    FunctionBody, FunctionEqualsBody, GenericParameters, Identifier, IdentifierExpression,
+    IdentifierOrFqn, LValue, LValueSuffix, Literal, ModuleLevelDeclaration,
+    NoNewlineSuffixOperator, ObjectIndex, Parameter, Parameters, PlatformFunction, PrimitiveType,
     ReturnType, StarUseStatement, Statement, SuffixExpression, SuffixOperator, TypeUse, TypedArray,
     UseStatement, UseStatementIdentifier, UseStatementPrefix, VariableDeclaration,
 };
@@ -676,20 +677,30 @@ fn na_p2_suffix_operator(
     diagnostics: &mut Vec<DmDiagnostic>,
 ) {
     match suffix_operator {
-        SuffixOperator::PlusPlus => {
-            // no-op
+        SuffixOperator::BoundSuffixOperator(bound_suffix) => {
+            match bound_suffix {
+                BoundSuffixOperator::PlusPlus => {
+                    // no-op
+                }
+                BoundSuffixOperator::MinusMinus => {
+                    // no-op
+                }
+            }
         }
-        SuffixOperator::MinusMinus => {
-            // no-op
-        }
-        SuffixOperator::ObjectProperty(_) => {
-            // no-op; props checked during type checking
-        }
-        SuffixOperator::ObjectIndex(object_index) => {
-            na_p2_object_index(object_index, symbol_table, diagnostics);
-        }
-        SuffixOperator::Call(call) => {
-            na_p2_call(call, symbol_table, diagnostics);
+        SuffixOperator::NoNewlineSuffixOperator(no_newline_suffix) => match no_newline_suffix {
+            NoNewlineSuffixOperator::ObjectIndex(object_index) => {
+                na_p2_object_index(object_index, symbol_table, diagnostics);
+            }
+            NoNewlineSuffixOperator::Call(call) => {
+                na_p2_call(call, symbol_table, diagnostics);
+            }
+        },
+        SuffixOperator::AnySpaceSuffixOperator(any_space_suffix) => {
+            match any_space_suffix {
+                AnySpaceSuffixOperator::ObjectProperty(_) => {
+                    // no-op; this is checked during type checking
+                }
+            }
         }
     }
 }

src/parser/ast.yaml

@@ -1160,13 +1160,23 @@ SuffixExpression:
 SuffixOperator:
   tree_enum:
     rules:
-      - PlusPlus:
-          child: false
-      - MinusMinus:
-          child: false
-      - ObjectProperty
+      - BoundSuffixOperator
+      - NoNewlineSuffixOperator
+      - AnySpaceSuffixOperator
+BoundSuffixOperator:
+  leaf_enum:
+    rules:
+      - PlusPlus
+      - MinusMinus
+NoNewlineSuffixOperator:
+  tree_enum:
+    rules:
       - ObjectIndex
       - Call
+AnySpaceSuffixOperator:
+  tree_enum:
+    rules:
+      - ObjectProperty
 ObjectProperty:
   struct:
     children:

src/parser/deimos.pest

@@ -260,7 +260,7 @@ FunctionTypeUse = {
 
 // Generic Arguments
 
-GenericArguments = {
+GenericArguments = !{
       "<"
     ~ TypeUseList
     ~ ">"
@@ -735,7 +735,8 @@ MultiplicativeOperator = {
     | Modulo
 }
 
-PrefixExpression = {
+// Compound-atomic because all prefix operators are bound immediately (i.e., no spaces).
+PrefixExpression = ${
       PrefixOperator*
     ~ SuffixExpression
 }
@@ -746,19 +747,31 @@ PrefixOperator = {
     | Negative
 }
 
-SuffixExpression = {
+SuffixExpression = ${
       PrimaryExpression
     ~ SuffixOperator*
 }
 
-SuffixOperator = {
+SuffixOperator = ${
+      BoundSuffixOperator
+    | ( " " | "\t" )* ~ NoNewlineSuffixOperator ~ ( " " | "\t" )*
+    | WHITESPACE* ~ AnySpaceSuffixOperator ~ WHITESPACE*
+}
+
+BoundSuffixOperator = {
       PlusPlus
     | MinusMinus
-    | ObjectProperty
-    | ObjectIndex
+}
+
+NoNewlineSuffixOperator = {
+      ObjectIndex
     | Call
 }
 
+AnySpaceSuffixOperator = {
+      ObjectProperty
+}
+
 ObjectProperty = {
       "."
     ~ Identifier
@@ -770,10 +783,10 @@ ObjectIndex = {
     ~ "]"
 }
 
-PrimaryExpression = {
+PrimaryExpression = !{
       Literal
-    | IdentifierExpression
     | FullyQualifiedName
+    | IdentifierExpression
     | Closure
     | ListExpression
     | ParenthesizedExpression
@@ -810,28 +823,29 @@ ParenthesesCall = {
     ~ Closure?
 }
 
-NonParenthesesCall = {
+NonParenthesesCall = ${
       TurboFish?
+    ~ ( " " | "\t" )*
     ~ (
           Closure
         | ExpressionList
-        | ExpressionList ~ Closure
+        | ExpressionList ~ ( " " | "\t" )* ~ Closure
       )
 }
 
-TurboFish = {
+TurboFish = ${
       "::"
     ~ GenericArguments
 }
 
-ExpressionList = {
+ExpressionList = !{
       Expression
     ~ ( "," ~ Expression )*
 }
 
 // Closure
 
-Closure = {
+Closure = !{
       "{"
     ~ ( ClosureParameters? ~ "->" )?
     ~ Statement*