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ex_getln: Make use of new parser to color expressions

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Retires g:Nvim_color_expr callback.
This commit is contained in:
ZyX
2017-10-29 16:32:13 +03:00
parent 06bdc9ed83
commit b935a12dab
6 changed files with 152 additions and 19 deletions
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67
src/nvim/ex_getln.c
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@@ -66,6 +66,8 @@
#include "nvim/lib/kvec.h"
#include "nvim/api/private/helpers.h"
#include "nvim/highlight_defs.h"
#include "nvim/viml/parser/parser.h"
#include "nvim/viml/parser/expressions.h"
/*
* Variables shared between getcmdline(), redrawcmdline() and others.
@@ -2341,6 +2343,62 @@ void free_cmdline_buf(void)
enum { MAX_CB_ERRORS = 1 };
/// Color expression cmdline using built-in expressions parser
///
/// @param[in] colored_ccline Command-line to color.
/// @param[out] ret_ccline_colors What should be colored.
///
/// Always colors the whole cmdline.
static void color_expr_cmdline(const CmdlineInfo *const colored_ccline,
ColoredCmdline *const ret_ccline_colors)
FUNC_ATTR_NONNULL_ALL
{
ParserLine plines[] = {
{
.data = (const char *)colored_ccline->cmdbuff,
.size = STRLEN(colored_ccline->cmdbuff),
.allocated = false,
},
{ NULL, 0, false },
};
ParserLine *plines_p = plines;
ParserHighlight colors;
kvi_init(colors);
ParserState pstate;
viml_parser_init(
&pstate, parser_simple_get_line, &plines_p, &colors);
ExprAST east = viml_pexpr_parse(&pstate, kExprFlagsDisallowEOC);
viml_pexpr_free_ast(east);
viml_parser_destroy(&pstate);
kv_resize(ret_ccline_colors->colors, kv_size(colors));
size_t prev_end = 0;
for (size_t i = 0 ; i < kv_size(colors) ; i++) {
const ParserHighlightChunk chunk = kv_A(colors, i);
if (chunk.start.col != prev_end) {
kv_push(ret_ccline_colors->colors, ((CmdlineColorChunk) {
.start = prev_end,
.end = chunk.start.col,
.attr = 0,
}));
}
const int id = syn_name2id((const char_u *)chunk.group);
const int attr = (id == 0 ? 0 : syn_id2attr(id));
kv_push(ret_ccline_colors->colors, ((CmdlineColorChunk) {
.start = chunk.start.col,
.end = chunk.end_col,
.attr = attr,
}));
prev_end = chunk.end_col;
}
if (prev_end < (size_t)colored_ccline->cmdlen) {
kv_push(ret_ccline_colors->colors, ((CmdlineColorChunk) {
.start = prev_end,
.end = (size_t)colored_ccline->cmdlen,
.attr = 0,
}));
}
}
/// Color command-line
///
/// Should use built-in command parser or user-specified one. Currently only the
@@ -2422,13 +2480,8 @@ static bool color_cmdline(const CmdlineInfo *const colored_ccline,
tl_ret = try_leave(&tstate, &err);
can_free_cb = true;
} else if (colored_ccline->cmdfirstc == '=') {
try_enter(&tstate);
err_errmsg = N_(
"E5409: Unable to get g:Nvim_color_expr callback: %s");
dgc_ret = tv_dict_get_callback(&globvardict, S_LEN("Nvim_color_expr"),
&color_cb);
tl_ret = try_leave(&tstate, &err);
can_free_cb = true;
color_expr_cmdline(colored_ccline, ret_ccline_colors);
can_free_cb = false;
}
if (!tl_ret || !dgc_ret) {
goto color_cmdline_error;