Initial commit

No parsing yet, but the execution is not bad

Commands:
- Print value
- Toggle terminal (switch between array and map)
- Filter command

Filters:
- Path filter

Path filters are compiled from a regex like AST

1 files changed, 38 insertions, 0 deletions

diff --git a/main/command.go b/main/command.go
new file mode 100644
index 0000000..560d3c3
--- /dev/null
+++ b/main/command.go
@@ -0,0 +1,38 @@
+package main
+
+type PrintValueCommand struct {}
+func (cmd PrintValueCommand) exec(state *ProgramState) {
+	state.out <- state.space
+}
+
+type ToggleTerminalCommand struct {}
+func (cmd ToggleTerminalCommand) exec(state *ProgramState) {
+	terminal, isTerminal := state.space.value.(TerminalValue)
+	if !isTerminal {
+		return
+	}
+	switch terminal {
+		case ArrayBegin:
+			state.space.value = MapBegin
+		case ArrayEnd:
+			state.space.value = MapEnd
+		case MapBegin:
+			state.space.value = ArrayBegin
+		case MapEnd:
+			state.space.value = ArrayEnd
+	}
+}
+
+type FilteredCommand struct {
+	filter Filter
+	command Command
+}
+func (cmd FilteredCommand) exec(state *ProgramState) {
+	if cmd.filter.exec(state) {
+		cmd.command.exec(state)
+	}
+}
+
+type Command interface {
+	exec(*ProgramState)
+}
\ No newline at end of file