mighty

commit 67a49ea1fb8b528515d10112a90f12a30ff0aff4
parent ef651a5ed314db795fe0573e45d482f78c66193f
Author: citbl <citbl@citbl.org>
Date:   Sun, 24 May 2026 15:07:49 +1000

wip

Diffstat:
M
mtcl/lexer.lua
 | 
5
+++--
M
mtcl/parser.lua
 | 
75
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------

2 files changed, 70 insertions(+), 10 deletions(-)
diff --git a/mtcl/lexer.lua b/mtcl/lexer.lua
@@ -1,6 +1,6 @@
 local lexer = {
 	tokens = {},
-	file = "",
+	file = "---",
 	line = 1,
 	col = 1,
 }
@@ -82,7 +82,7 @@ TK = {
 	LIT_INT = "a int",
 }
 
-Token = { kind = TK.IDK, file = "", line = 0, col = 0 }
+Token = { kind = TK.IDK, lexeme = "", file = "", line = 0, col = 0 }
 
 local function print_token(t)
 	print(
@@ -111,6 +111,7 @@ end
 
 function lexer:lex(file, src)
 	local i = 1
+	self.file = file
 
 	local function next()
 		if i + 1 <= #src then
diff --git a/mtcl/parser.lua b/mtcl/parser.lua
@@ -1,19 +1,78 @@
-local parser = { file, src, tokens }
+local parser = { pos = 1 }
+local ast = require("ast")
+local node = {}
+
+function parser:peek()
+	return self.tokens[self.pos] or 0
+end
+
+function parser:advance()
+	self.pos = self.pos + 1
+end
+
+function parser:swallow(word)
+	local current = self.tokens[self.pos]
+	if current == word then
+		parser:advance()
+	else
+		unhandled(current, "EXPECT: " .. word)
+	end
+end
+
+function parser:parse_function()
+	print("parse function" .. self.pos)
+end
+
+function parser:parse_use()
+	print("parse use" .. self.pos)
+	self:swallow("use")
+end
+
+function unhandled(token, extramsg)
+	print(
+		token.file
+			.. " at L"
+			.. token.line
+			.. ":"
+			.. token.col
+			.. "\n\t UNHANDLED TOKEN "
+			.. token.lexeme
+			.. "\t "
+			.. (extramsg or "")
+	)
+end
+
+function parser:parse_program()
+	while self:peek() ~= 0 do
+		local token = self:peek()
+		local word = token.lexeme
+		print("peek:", word)
+		if word == "use" then
+			self:parse_use()
+		elseif word == "fx" then
+			self:parse_function()
+		else
+			unhandled(token)
+			break
+		end
+		self:advance()
+	end
+end
 
 function parser:parse(file, src, tokens)
-	--
 	self.file = file
 	self.src = src
 	self.tokens = tokens
-
+	self.pos = 1
 	local i = 1
 
-	while i <= #tokens do
-		local t = tokens[i]
-		t2 = tokens[i + 1] or 0
+	self:parse_program()
 
-		i = i + 1
-	end
+	-- while i <= #tokens do
+	-- 	local t = tokens[i]
+	-- 	t2 = tokens[i + 1] or 0
+	-- 	i = i + 1
+	-- end
 end
 
 return parser