Complete redo of content indexing and querying (#517)

Complete redo of data store Introduces live queries and live templates
2023-10-03 14:16:33 +02:00
parent 7af98e7c7b
commit 0313565610
200 changed files with 4675 additions and 4363 deletions
@@ -0,0 +1,119 @@
+@top Program { Expression }
+
+@precedence {
+  mulop @left
+  addop @left
+  binop @left
+  and @left
+  or @left
+}
+
+@skip {
+  space
+}
+
+commaSep<content> { content ("," content)* }
+
+kw<term> { @specialize[@name={term}]<Identifier, term> }
+
+
+Query {
+    TagIdentifier ( WhereClause | LimitClause | OrderClause | SelectClause | RenderClause )*
+}
+
+WhereClause { kw<"where"> Expression }
+LimitClause { kw<"limit"> Expression }
+OrderClause { Order commaSep<OrderBy> }
+OrderBy { Expression OrderDirection? }
+SelectClause { kw<"select"> commaSep<Select> }
+RenderClause { kw<"render"> PageRef }
+
+Select { Identifier | Expression kw<"as"> Identifier }
+
+OrderDirection {
+ OrderKW
+}
+
+Value { Number | String | Bool | Regex | kw<"null"> | List }
+
+Attribute {
+  LVal "." Identifier
+}
+
+Call {
+  Identifier "(" commaSep<Expression> ")" | Identifier "(" ")"
+}
+
+LVal {
+  Identifier
+| Attribute
+}
+
+ParenthesizedExpression { "(" Expression ")" }
+
+LogicalExpression {
+Expression !and kw<"and"> Expression
+| Expression !or kw<"or"> Expression
+}
+
+Expression {
+  Value
+| LVal
+| ParenthesizedExpression
+| LogicalExpression 
+| BinExpression
+| Call
+}
+
+BinExpression {
+  Expression !binop "<" Expression
+| Expression !binop "<=" Expression
+| Expression !binop "=" Expression
+| Expression !binop "!=" Expression
+| Expression !binop ">=" Expression
+| Expression !binop ">" Expression
+| Expression !binop "=~" Expression
+| Expression !binop "!=~" Expression
+| Expression !binop InKW Expression
+
+| Expression !mulop "*" Expression
+| Expression !mulop "/" Expression
+| Expression !mulop "%" Expression
+| Expression !addop "+" Expression
+| Expression !addop "-" Expression
+}
+
+List { "[" commaSep<Expression> "]" }
+
+
+Bool {
+  BooleanKW
+}
+
+
+@tokens {
+  space { std.whitespace+ }
+
+  TagIdentifier { @asciiLetter (@asciiLetter | @digit | "-" | "_" | "/" )* }
+
+  Identifier { @asciiLetter (@asciiLetter | @digit | "-" | "_")* }
+
+  String {
+    ("\"" | "“" | "”") ![\"”“]* ("\"" | "“" | "”")
+  }
+  PageRef {
+    "[" "[" ![\]]* "]" "]"
+  }
+  Order { "order by" }
+  Regex { "/" ( ![/\\\n\r] | "\\" _ )* "/"? }
+
+  Number { std.digit+ }
+
+  BooleanKW { "true" | "false" }
+
+  InKW { "in" }
+
+  OrderKW { "asc" | "desc" }
+
+  @precedence { Order, BooleanKW, InKW, OrderKW, Identifier, Number }
+}