more uniform syntax

src/cozoscript.pest

@@ -173,8 +173,8 @@ literal = _{ null | boolean | number | string}
 // schema
 
 schema_clause = { (schema_put | schema_retract) ~ compound_ident ~ (simple_schema_def | nested_schema_def) }
-schema_put = {"put"}
-schema_retract = {"retract"}
+schema_put = {":put"}
+schema_retract = {":retract"}
 simple_schema_def = {":" ~ ident+ ~ ";"?}
 nested_schema_def = {"{" ~ (nested_schema_clause ~ ",")* ~ nested_schema_clause? ~ "}" ~ ";"?}
 nested_schema_clause = {compound_ident ~ ":" ~ ident+}
@@ -182,9 +182,9 @@ nested_schema_clause = {compound_ident ~ ":" ~ ident+}
 // tx
 
 tx_clause = { (tx_put | tx_retract_all | tx_retract )?  ~ ("@" ~ expr)? ~ tx_map ~ ";"? }
-tx_put = {"put"}
-tx_retract = {"retract"}
-tx_retract_all = {"retract_all"}
+tx_put = {":put"}
+tx_retract = {":retract"}
+tx_retract_all = {":retract_all"}
 tx_map = {"{" ~ (tx_pair ~ ",")* ~ tx_pair? ~ "}"}
 tx_pair = {tx_ident ~ ":" ~ (tx_list | tx_map | expr )}
 tx_list = {"[" ~ ((expr | tx_map) ~ ",")* ~ (expr | tx_map)?  ~ "]"}

tests/air_routes.rs

@@ -30,15 +30,15 @@ fn air_routes() -> Result<()> {
         r#"
         :schema
 
-        put country {
+        :put country {
             code: string unique,
             desc: string
         }
-        put continent {
+        :put continent {
             code: string unique,
             desc: string
         }
-        put airport {
+        :put airport {
             iata: string unique,
             icao: string index,
             city: string index,
@@ -51,12 +51,12 @@ fn air_routes() -> Result<()> {
             lat: float,
             lon: float
         }
-        put route {
+        :put route {
             src: ref,
             dst: ref,
             distance: int
         }
-        put geo {
+        :put geo {
             contains: ref many,
         }
     "#,

tests/simple.rs

@@ -29,7 +29,7 @@ fn simple() {
     db.run_script(
         r#"
         :schema
-        put person {
+        :put person {
             id: string unique,
             first_name: string index,
             last_name: string index,