Revisión de progress.gd

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2 files changed, 119 insertions

compiler_wip.gd(archivo creado)

		@@ -0,0 +1,92 @@
1	+	extends RefCounted
2	+	class_name NovaCompiler
3	+	# NOTE: Godot's docs for array states that `.resize` + direct assignment is faster
4	+	# than repeatedly calling `append` and `push_back`.
5	+	static var prelude = """
6	+	extends RefCounted
7	+
8	+	var state = %s
9	+
10	+	func push(stack_symbol, symbol) -> void:
11	+	state[stack_symbol].push_back(symbol)
12	+
13	+	func peek(stack_symbol, depth : int, symbol) -> bool:
14	+	var stack = state[stack_symbol]
15	+	if not stack: return false
16	+	return stack[stack.size() - depth] == symbol
17	+
18	+	func pop(stack_symbol) -> void:
19	+	state[stack_symbol].pop_back()
20	+	"""
21	+
22	+	static func compile(json_string: String) -> GDScript:
23	+	var json = JSON.new()
24	+	var error = json.parse(json_string)
25	+	if error != OK:
26	+	print("JSON Parse Error: ", json.get_error_message(), " in ", json_string, " at line ", json.get_error_line())
27	+	return GDScript.new()
28	+
29	+	var rules = json.data.rules
30	+	var state = json.data.state
31	+
32	+	var compiled_rules := PackedStringArray([prelude % state])
33	+	var i := 0
34	+
35	+	for rule in rules:
36	+	var conditions = rule.conditions
37	+	var results = rule.results
38	+	compiled_rules.push_back("func _rule_%d() -> bool:" % i)
39	+	var depths : Dictionary[String, int] = {}
40	+	for condition in conditions:
41	+	for action in condition.pattern:
42	+	match action.type:
43	+	"variable":
44	+	# TODO: name mangle this
45	+	compiled_rules.push_back("\tvar %s" % action.symbol)
46	+	for condition in conditions:
47	+	var stack : String = condition.stack.c_escape()
48	+	for action in condition.pattern:
49	+	var depth = depths.get_or_add(stack, 0)
50	+	depths[stack] = depth + 1
51	+	match action.type:
52	+	"literal":
53	+	compiled_rules.push_back("\tif not peek(\"%s\", %d, \"%s\"): return false" % [
54	+	stack,
55	+	depth,
56	+	action.symbol.c_escape()
57	+	])
58	+	"variable":
59	+	compiled_rules.push_back("\tif %s == null and peek(\"%s\", %d, \"%s\"): return false" % [
60	+	action.symbol.c_escape(),
61	+	stack,
62	+	depth,
63	+	action.symbol.c_escape()
64	+	])
65	+	compiled_rules.push_back("\t%s = peek(\"%s\", %d, \"%s\")" % [
66	+	action.symbol.c_escape(),
67	+	stack,
68	+	depth,
69	+	action.symbol.c_escape()
70	+	])
71	+	for condition in conditions:
72	+	var stack : String = condition.stack.c_escape()
73	+	for __ in range(condition.pattern.size()):
74	+	compiled_rules.push_back("\tpop(\"%s\")" % stack)
75	+	for result in results:
76	+	var stack : String = result.stack
77	+	for action in result.pattern:
78	+	match action.type:
79	+	"literal":
80	+	compiled_rules.push_back("\tpush(\"%s\", \"%s\")" % [
81	+	stack, action.symbol.c_escape()
82	+	])
83	+	"variable":
84	+	compiled_rules.push_back("\tpush(\"%s\", %s if %s else \"%s\")" % [
85	+	stack, action.symbol, action.symbol, action.symbol.c_escape()
86	+	])
87	+	pass
88	+	print(conditions)
89	+	print(results)
90	+	print("\n".join(compiled_rules))
91	+
92	+	return GDScript.new()

progress.gd(archivo creado)

		@@ -0,0 +1,27 @@
1	+	extends RefCounted
2	+
3	+	var state = { "foo": ["foo", "bar", "baz", "quux"], "bar": ["quux", "baz", "bar", "foo"] }
4	+
5	+	func push(stack_symbol, symbol) -> void:
6	+	state[stack_symbol].push_back(symbol)
7	+
8	+	func peek(stack_symbol, depth : int, symbol) -> bool:
9	+	var stack = state[stack_symbol]
10	+	if not stack: return false
11	+	return stack[stack.size() - depth] == symbol
12	+
13	+	func pop(stack_symbol) -> void:
14	+	state[stack_symbol].pop_back()
15	+
16	+	func _rule_0() -> bool:
17	+	var baz
18	+	if not peek("foo", 0, "bar"): return false
19	+	if baz == null and peek("foo", 1, "baz"): return false
20	+	baz = peek("foo", 1, "baz")
21	+	if not peek("foo", 2, "bin"): return false
22	+	pop("foo")
23	+	pop("foo")
24	+	pop("foo")
25	+	push("bar", "quux")
26	+	push("bar", baz if baz else "baz")
27	+	push("bar", "quin")

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