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//! Function-like macro expansion builder.
use crate::parsing::c::lex::tokens::*;
use crate::parsing::c::preprocess::synthesis::*;
use vyre::ir::{Expr, Node};
use super::arg_scan::emit_function_like_argument_scan;
use super::helpers::*;
use super::*;
pub(super) fn emit_function_like_replacement(
in_tok_types: &str,
macro_vals: &str,
macro_replacement_params: &str,
out_tok_types: &str,
macro_arg_starts: &str,
macro_arg_ends: &str,
num_tokens: Expr,
max_out_tokens: u32,
) -> Vec<Node> {
let mut nodes = emit_function_like_argument_scan(
in_tok_types,
macro_arg_starts,
macro_arg_ends,
num_tokens.clone(),
);
nodes.extend([
Node::let_bind("named_skip_repl", Expr::u32(0)),
Node::loop_for(
"named_repl_i",
Expr::u32(0),
Expr::var("named_repl_size"),
{
vec![Node::if_then_else(
Expr::eq(Expr::var("named_skip_repl"), Expr::u32(1)),
vec![Node::assign("named_skip_repl", Expr::u32(0))],
{
let mut repl = vec![
Node::let_bind(
"named_repl_offset",
Expr::add(Expr::var("named_macro_idx"), Expr::var("named_repl_i")),
),
Node::let_bind(
"named_repl_param",
Expr::load(macro_replacement_params, Expr::var("named_repl_offset")),
),
Node::let_bind(
"named_repl_tok",
Expr::load(macro_vals, Expr::var("named_repl_offset")),
),
];
repl.push(Node::if_then_else(
Expr::and(
Expr::eq(Expr::var("named_repl_tok"), Expr::u32(TOK_HASH)),
Expr::lt(
Expr::add(Expr::var("named_repl_i"), Expr::u32(1)),
Expr::var("named_repl_size"),
),
),
vec![
Node::let_bind(
"macro_stringify_next_offset",
Expr::add(
Expr::var("named_macro_idx"),
Expr::add(Expr::var("named_repl_i"), Expr::u32(1)),
),
),
Node::let_bind(
"macro_stringify_next_param",
Expr::load(
macro_replacement_params,
Expr::var("macro_stringify_next_offset"),
),
),
Node::if_then_else(
Expr::eq(
Expr::var("macro_stringify_next_param"),
Expr::u32(C_MACRO_REPLACEMENT_LITERAL),
),
emit_one_output_token(
out_tok_types,
Expr::var("named_repl_tok"),
max_out_tokens,
),
{
let mut stringify = vec![Node::if_then(
Expr::ge(
Expr::var("macro_stringify_next_param"),
Expr::var("named_param_count"),
),
vec![Node::trap(
Expr::var("macro_stringify_next_param"),
"function-like-stringification-parameter-out-of-range",
)],
)];
stringify.extend(emit_one_output_token(
out_tok_types,
Expr::u32(stringification_token_type()),
max_out_tokens,
));
stringify.push(Node::assign("named_skip_repl", Expr::u32(1)));
stringify
},
),
],
vec![Node::if_then_else(
Expr::eq(Expr::var("named_repl_tok"), Expr::u32(TOK_HASHHASH)),
{
let paste = vec![
Node::if_then(
Expr::eq(Expr::var("named_out_idx"), Expr::u32(0)),
vec![Node::trap(
Expr::var("named_repl_i"),
"function-like-token-paste-missing-left-token",
)],
),
Node::if_then(
Expr::ge(
Expr::add(Expr::var("named_repl_i"), Expr::u32(1)),
Expr::var("named_repl_size"),
),
vec![Node::trap(
Expr::var("named_repl_i"),
"function-like-token-paste-missing-right-token",
)],
),
Node::let_bind(
"macro_paste_next_offset",
Expr::add(
Expr::var("named_macro_idx"),
Expr::add(Expr::var("named_repl_i"), Expr::u32(1)),
),
),
Node::let_bind(
"macro_paste_next_param",
Expr::load(
macro_replacement_params,
Expr::var("macro_paste_next_offset"),
),
),
Node::let_bind("macro_paste_right_tok", Expr::u32(0)),
Node::let_bind("macro_paste_arg_start", Expr::u32(0)),
Node::let_bind("macro_paste_arg_end", Expr::u32(0)),
Node::if_then_else(
Expr::eq(
Expr::var("macro_paste_next_param"),
Expr::u32(C_MACRO_REPLACEMENT_LITERAL),
),
vec![Node::assign(
"macro_paste_right_tok",
Expr::load(
macro_vals,
Expr::var("macro_paste_next_offset"),
),
)],
{
let arg_start = selected_arg_bound(
macro_arg_starts,
Expr::var("macro_paste_next_param"),
);
let arg_end = selected_arg_bound(
macro_arg_ends,
Expr::var("macro_paste_next_param"),
);
vec![
Node::if_then(
Expr::ge(
Expr::var("macro_paste_next_param"),
Expr::var("named_param_count"),
),
vec![Node::trap(
Expr::var("macro_paste_next_param"),
"function-like-token-paste-parameter-out-of-range",
)],
),
Node::assign("macro_paste_arg_start", arg_start),
Node::assign("macro_paste_arg_end", arg_end),
Node::if_then(
Expr::ge(
Expr::var("macro_paste_arg_start"),
Expr::var("macro_paste_arg_end"),
),
vec![Node::trap(
Expr::var("macro_paste_next_param"),
"function-like-token-paste-empty-argument",
)],
),
Node::assign(
"macro_paste_right_tok",
Expr::load(
in_tok_types,
Expr::var("macro_paste_arg_start"),
),
),
]
},
),
Node::let_bind(
"macro_paste_left_tok",
Expr::load(
out_tok_types,
Expr::sub(
Expr::var("named_out_idx"),
Expr::u32(1),
),
),
),
Node::let_bind(
"macro_paste_synth_tok",
synthesized_paste_token(
Expr::var("macro_paste_left_tok"),
Expr::var("macro_paste_right_tok"),
),
),
Node::if_then(
Expr::eq(
Expr::var("macro_paste_synth_tok"),
Expr::u32(EMPTY_MACRO_SLOT),
),
vec![Node::trap(
Expr::var("macro_paste_right_tok"),
"function-like-token-paste-cannot-synthesize-token-type",
)],
),
Node::store(
out_tok_types,
Expr::sub(Expr::var("named_out_idx"), Expr::u32(1)),
Expr::var("macro_paste_synth_tok"),
),
Node::if_then(
Expr::ne(
Expr::var("macro_paste_next_param"),
Expr::u32(C_MACRO_REPLACEMENT_LITERAL),
),
vec![Node::loop_for(
"macro_paste_rhs_rest_rel",
Expr::u32(1),
num_tokens.clone(),
vec![Node::if_then(
Expr::lt(
Expr::add(
Expr::var("macro_paste_arg_start"),
Expr::var("macro_paste_rhs_rest_rel"),
),
Expr::var("macro_paste_arg_end"),
),
{
let mut copy = vec![Node::let_bind(
"macro_paste_rhs_rest_tok",
Expr::load(
in_tok_types,
Expr::add(
Expr::var("macro_paste_arg_start"),
Expr::var(
"macro_paste_rhs_rest_rel",
),
),
),
)];
copy.extend(emit_one_output_token(
out_tok_types,
Expr::var("macro_paste_rhs_rest_tok"),
max_out_tokens,
));
copy
},
)],
)],
),
Node::assign("named_skip_repl", Expr::u32(1)),
];
paste
},
{
let regular_literal = emit_one_output_token(
out_tok_types,
Expr::var("named_repl_tok"),
max_out_tokens,
);
let arg_start = selected_arg_bound(
macro_arg_starts,
Expr::var("named_repl_param"),
);
let arg_end = selected_arg_bound(
macro_arg_ends,
Expr::var("named_repl_param"),
);
vec![Node::if_then_else(
Expr::eq(
Expr::var("named_repl_param"),
Expr::u32(C_MACRO_REPLACEMENT_LITERAL),
),
regular_literal,
vec![
Node::if_then(
Expr::ge(
Expr::var("named_repl_param"),
Expr::var("named_param_count"),
),
vec![Node::trap(
Expr::var("named_repl_param"),
"function-like-macro-replacement-parameter-out-of-range",
)],
),
Node::let_bind("macro_sub_arg_start", arg_start),
Node::let_bind("macro_sub_arg_end", arg_end),
Node::loop_for(
"macro_sub_arg_rel",
Expr::u32(0),
num_tokens.clone(),
vec![Node::if_then(
Expr::lt(
Expr::add(
Expr::var("macro_sub_arg_start"),
Expr::var("macro_sub_arg_rel"),
),
Expr::var("macro_sub_arg_end"),
),
{
let mut copy = vec![Node::let_bind(
"macro_sub_arg_tok",
Expr::load(
in_tok_types,
Expr::add(
Expr::var("macro_sub_arg_start"),
Expr::var("macro_sub_arg_rel"),
),
),
)];
copy.extend(emit_one_output_token(
out_tok_types,
Expr::var("macro_sub_arg_tok"),
max_out_tokens,
));
copy
},
)],
),
],
)]
},
)],
));
repl
},
)]
},
),
Node::assign(
"named_i",
Expr::add(Expr::var("macro_close_idx"), Expr::u32(1)),
),
]);
nodes
}