Commit 27b00a8788aec21df582dcae38a976edb90bb818 | lib/zig/pek

author	Meghan Denny <hello@nektro.net> 2021-08-05 03:05:31 -07:00
committer	Meghan Denny <hello@nektro.net> 2021-08-05 03:05:31 -07:00
log	27b00a8788aec21df582dcae38a976edb90bb818
tree	8c36ec93fe4914f528cad8bd09b5848fd123ca48
parent	19e2662de8b0c9a2e2be28a06cb66f84d961fbf8

3 files changed, 35 insertions(+), 1 deletions(-)

src/astgen.zig+12

...	...	@@ -8,6 +8,7 @@ pub const Value = union(enum) {
8	8	element: Element,
9	9	attr: Attr,
10	10	string: []const u8,
	11	replacement: []const []const u8,
11	12	};
12	13
13	14	pub const Element = struct {
...	...	@@ -103,9 +104,20 @@ const Parser = struct {
103	104	if (self.tokens[self.index] == .string) {
104	105	return Value{ .string = self.eat(.string) };
105	106	}
	107	if (self.tryEatSymbol("{")) {
	108	return Value{ .replacement = self.doReplacement() };
	109	}
106	110	return Value{ .element = self.doElement() };
107	111	}
108	112
	113	pub fn doReplacement(comptime self: *Parser) []const []const u8 {
	114	var ret: []const []const u8 = &.{};
	115	while (!self.tryEatSymbol("}")) {
	116	ret = ret ++ &[_][]const u8{self.eat(.word)};
	117	}
	118	return ret;
	119	}
	120
109	121	fn eat(comptime self: *Parser, comptime typ: std.meta.Tag(Token)) []const u8 {
110	122	defer self.index += 1;
111	123	return @field(self.tokens[self.index], @tagName(typ));

src/lib.zig+14

...	...	@@ -64,6 +64,20 @@ pub fn compile(writer: anytype, comptime value: astgen.Value, data: anytype, ind
64	64	.string => \|v\| {
65	65	try writer.writeAll(v[1 .. v.len - 1]);
66	66	},
	67	.replacement => \|v\| {
	68	const x = @field(data, v[0]);
	69	if (v.len == 1) {
	70	const TO = @TypeOf(x);
	71
	72	if (comptime std.meta.trait.isZigString(TO)) {
	73	try writer.print("{s}", .{x});
	74	return;
	75	}
	76	@compileError("pek: compile: unsupported type: " ++ @typeName(TO));
	77	} else {
	78	try compile(writer, astgen.Value{ .replacement = v[1..] }, x, indent, flag1);
	79	}
	80	},
67	81	else => unreachable,
68	82	}
69	83	}

src/main.zig+9-1

...	...	@@ -12,6 +12,8 @@ const example_document =
12	12	\\ h1("Pek Example")
13	13	\\ hr
14	14	\\ p("This is an example HTML document written in "a[href="https://github.com/nektro/zig-pek"]("Pek")".")
	15	\\ p("Pek is written by "{author}".")
	16	\\ p("Her favorite plant is the "{favorite flower})
15	17	\\ )
16	18	\\)
17	19	;
...	...	@@ -21,6 +23,12 @@ pub fn main() !void {
21	23	std.debug.print("\n", .{});
22	24
23	25	const doc = comptime pek.parse(example_document);
24		try pek.compile(std.io.getStdErr().writer(), doc, .{}, 0, false);
	26	const data = .{
	27	.author = "Meghan D",
	28	.favorite = .{
	29	.flower = "Sunflower",
	30	},
	31	};
	32	try pek.compile(std.io.getStdErr().writer(), doc, data, 0, false);
25	33	std.debug.print("\n", .{});
26	34	}