feat(hcl): add additional queries

* index
* for expressions
* arithmetic and logical expressions
* escape sequences inside string template

queries/hcl/rainbow-delimiters.scm

@@ -2,10 +2,30 @@
   (tuple_start "[") @delimiter
   (tuple_end   "]") @delimiter @sentinel) @container
 
+(for_tuple_expr
+  (tuple_start "[") @delimiter
+  (tuple_end   "]") @delimiter @sentinel) @container
+
+(new_index
+  "[" @delimiter
+  "]" @delimiter @sentinel) @container
+
 (function_call
    "(" @delimiter
    ")" @delimiter @sentinel) @container
 
+(expression
+  "(" @delimiter
+  ")" @delimiter @sentinel) @container
+
+(binary_operation
+  "(" @delimiter
+  ")" @delimiter @sentinel) @container
+
+(unary_operation
+  "(" @delimiter
+  ")" @delimiter @sentinel) @container
+
 (block
   (block_start "{") @delimiter
   (block_end   "}") @delimiter @sentinel) @container
@@ -13,3 +33,15 @@
 (object
   (object_start "{") @delimiter
   (object_end   "}") @delimiter @sentinel) @container
+
+(for_object_expr
+  (object_start "{") @delimiter
+  (object_end   "}") @delimiter @sentinel) @container
+
+(template_interpolation
+  (template_interpolation_start) @delimiter
+  (template_interpolation_end) @delimiter @sentinel) @container
+
+(_
+  (template_directive_start) @delimiter
+  (template_directive_end) @delimiter @sentinel) @container

test/highlight/hcl/basic.tf

@@ -30,4 +30,43 @@ resource "provider_grant" "usage_grants" {
   roles     = [provider_role.role2.name]
 }
 
+resource "example" "binary_expressions" {
+  cond1 = (0*1) ? 1 : "foobar"
+  bin1  = ((!(1)+2)%3)*4
+}
+
+resource "example" "for_expressions" {
+  for1 = { for i, v in ["a", "a", "b"] : v => i... }
+  for2 = [ for k, v in x : "${k}-${v}" ]
+}
+
+variable "timestamp" {
+  type = string
+
+  validation {
+    # formatdate fails if the second argument is not a valid timestamp
+    condition     = can(formatdate("", var.timestamp))
+    error_message = "Hello, %{ if var.name != "" }${var.name}%{ else }unnamed%{ endif }!"
+  }
+}
+
+block {
+  sample = <<-EOT
+  %{ for ip in aws_instance.example[*].private_ip }
+  server ${ip}
+  %{ endfor }
+  EOT
+}
+
+resource "terraform_data" "cluster" {
+  # Replacement of any instance of the cluster requires re-provisioning
+  triggers_replace = aws_instance.cluster.[*].id
+
+  # Bootstrap script can run on any instance of the cluster
+  # So we just choose the first in this case
+  connection {
+    host = aws_instance.cluster.[0].public_ip
+  }
+}
+
 # vim:ft=hcl