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viml/parser/expressions: Highlight prefix separately from number

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Should make accidental octals more visible.
This commit is contained in:
ZyX
2017-10-16 00:30:55 +03:00
parent 5e92ee6565
commit fe81380bf5
2 changed files with 128 additions and 2 deletions
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17
src/nvim/viml/parser/expressions.c
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@@ -1042,6 +1042,7 @@ void viml_pexpr_free_ast(ExprAST ast)
//
// NVimRegister -> SpecialChar
// NVimNumber -> Number
// NVimNumberPrefix -> SpecialChar
// NVimFloat -> NVimNumber
//
// NVimNestingParenthesis -> NVimParenthesis
@@ -1842,6 +1843,14 @@ static const int want_node_to_lexer_flags[] = {
[kENodeArgumentSeparator] = kELFlagForbidScope,
};
/// Number of characters to highlight as NumberPrefix depending on the base
static const uint8_t base_to_prefix_length[] = {
[2] = 2,
[8] = 1,
[10] = 0,
[16] = 2,
};
/// Parse one VimL expression
///
/// @param pstate Parser state.
@@ -2632,7 +2641,13 @@ viml_pexpr_parse_figure_brace_closing_error:
} else {
NEW_NODE_WITH_CUR_POS(cur_node, kExprNodeInteger);
cur_node->data.num.value = cur_token.data.num.val.integer;
HL_CUR_TOKEN(Number);
const uint8_t prefix_length = base_to_prefix_length[
cur_token.data.num.base];
viml_parser_highlight(pstate, cur_token.start, prefix_length,
HL(NumberPrefix));
viml_parser_highlight(
pstate, shifted_pos(cur_token.start, prefix_length),
cur_token.len - prefix_length, HL(Number));
}
want_node = kENodeOperator;
*top_node_p = cur_node;