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Replace dedicated vector literal syntax builtins
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This commit is contained in:
kayomn 2023-08-13 14:27:03 +01:00
parent 0fbdc001d4
commit 016165b6a6
3 changed files with 72 additions and 85 deletions
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2
debug/app.ona
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@ -1,7 +1,7 @@
# Test comment.
pos = [10, 20, 0.3]
pos = @vec3(10, 20, 0.3)
options = {
.title = "Afterglow",

93
source/ona/kym.zig
View File

@ -24,6 +24,8 @@ pub const RuntimeEnv = struct {
const Builtin = enum {
import,
print,
vec2,
vec3,
};
const Constant = union (enum) {
@ -110,19 +112,6 @@ pub const RuntimeEnv = struct {
});
},
.vector2_literal => |literal| {
try self.compile_expression(chunk, literal.y_expression.*);
try self.compile_expression(chunk, literal.x_expression.*);
try chunk.opcodes.push_one(.push_vector2);
},
.vector3_literal => |literal| {
try self.compile_expression(chunk, literal.z_expression.*);
try self.compile_expression(chunk, literal.y_expression.*);
try self.compile_expression(chunk, literal.x_expression.*);
try chunk.opcodes.push_one(.push_vector3);
},
.table_literal => |fields| {
if (fields.values.len > coral.math.max_int(@typeInfo(u32).Int)) {
return error.OutOfMemory;
@ -182,15 +171,33 @@ pub const RuntimeEnv = struct {
.builtin => |builtin| {
coral.debug.assert(builtin.len != 0);
const decoded_builtin = @as(?Builtin, switch (builtin[0]) {
'i' => if (coral.io.ends_with(builtin, "mport")) .import else null,
'p' => if (coral.io.ends_with(builtin, "rint")) .print else null,
else => null,
});
switch (builtin[0]) {
'i' => {
if (coral.io.ends_with(builtin, "mport")) {
return chunk.opcodes.push_one(.{.push_builtin = .import});
}
},
try chunk.opcodes.push_one(.{.push_builtin = decoded_builtin orelse {
return chunk.env.raise(error.BadSyntax, "unknown builtin");
}});
'p' => {
if (coral.io.ends_with(builtin, "rint")) {
return chunk.opcodes.push_one(.{.push_builtin = .print});
}
},
'v' => {
if (coral.io.ends_with(builtin, "ec2")) {
return chunk.opcodes.push_one(.{.push_builtin = .vec2});
}
if (coral.io.ends_with(builtin, "ec3")) {
return chunk.opcodes.push_one(.{.push_builtin = .vec3});
}
},
else => {},
}
return chunk.env.raise(error.BadSyntax, "unknown builtin");
},
.local_get => |local_get| {
@ -417,6 +424,8 @@ pub const RuntimeEnv = struct {
const builtin_syscall = try self.env.new_syscall(switch (push_builtin) {
.import => syscall_import,
.print => syscall_print,
.vec2 => syscall_vec2,
.vec3 => syscall_vec3,
});
errdefer self.env.discard(builtin_syscall);
@ -990,7 +999,7 @@ pub const RuntimeEnv = struct {
const frame = self.frames.peek() orelse return self.raise(error.IllegalState, "stack underflow");
if (index < frame.arg_count) {
if (self.locals.values[frame.locals_top - (1 + index)]) |local| {
if (self.locals.values[(frame.locals_top - frame.arg_count) + index]) |local| {
return self.acquire(local);
}
}
@ -1566,3 +1575,43 @@ fn syscall_print(env: *RuntimeEnv) RuntimeError!?*RuntimeRef {
return null;
}
fn syscall_vec2(env: *RuntimeEnv) RuntimeError!?*RuntimeRef {
const x = decode: {
const value = try env.expect(try env.acquire_arg(0));
defer env.discard(value);
break: decode @as(f32, @floatCast(try env.unbox_float(value)));
};
if (try env.acquire_arg(1)) |y| {
defer env.discard(y);
return env.new_vector2(x, @floatCast(try env.unbox_float(y)));
}
return env.new_vector2(x, x);
}
fn syscall_vec3(env: *RuntimeEnv) RuntimeError!?*RuntimeRef {
const x = decode: {
const value = try env.expect(try env.acquire_arg(0));
defer env.discard(value);
break: decode @as(f32, @floatCast(try env.unbox_float(value)));
};
if (try env.acquire_arg(1)) |y| {
defer env.discard(y);
const z = try env.expect(try env.acquire_arg(2));
defer env.discard(z);
return env.new_vector3(x, @floatCast(try env.unbox_float(y)), @floatCast(try env.unbox_float(z)));
}
return env.new_vector3(x, x, x);
}

62
source/ona/kym/Ast.zig
View File

@ -60,17 +60,6 @@ pub const Expression = union (enum) {
argument_expressions: List,
},
vector2_literal: struct {
x_expression: *Expression,
y_expression: *Expression,
},
vector3_literal: struct {
x_expression: *Expression,
y_expression: *Expression,
z_expression: *Expression,
},
pub const BinaryOperator = enum {
addition,
subtraction,
@ -368,57 +357,6 @@ fn parse_factor(self: *Self) ParseError!Expression {
break: parse .{.builtin = builtin};
},
.symbol_bracket_left => {
self.tokenizer.skip_newlines();
var expressions = [3]?*Expression{null, null, null};
var size = @as(u2, 0);
while (true) {
if (size == expressions.len) {
return self.report("vector literals cannot contain more than 3 elements");
}
expressions[size] = try coral.io.allocate_one(allocator, try self.parse_expression());
size += 1;
switch (self.tokenizer.token) {
.symbol_comma => {
self.tokenizer.skip_newlines();
continue;
},
.symbol_bracket_right => {
self.tokenizer.skip_newlines();
break;
},
else => return self.report("expected `,` or `]` after vector literal element expression"),
}
}
break: parse switch (size) {
0, 1 => return self.report("vector literals must contain at least 2 elements"),
2 => .{
.vector2_literal = .{
.x_expression = expressions[0] orelse unreachable,
.y_expression = expressions[1] orelse unreachable,
},
},
3 => .{
.vector3_literal = .{
.x_expression = expressions[0] orelse unreachable,
.y_expression = expressions[1] orelse unreachable,
.z_expression = expressions[2] orelse unreachable,
},
},
};
},
.symbol_brace_left => {
var table_literal = Expression.TableLiteral.make(allocator);