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rustc: Add pprust::variant_to_str

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This commit is contained in:
Brian Anderson 2012-01-25 17:22:08 -08:00
parent 1586cce0ea
commit b7b8455e54
1 changed files with 39 additions and 17 deletions
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56
src/comp/syntax/print/pprust.rs
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@ -137,6 +137,24 @@ fn attribute_to_str(attr: ast::attribute) -> str {
be to_str(attr, print_attribute);
}
fn variant_to_str(var: ast::variant) -> str {
be to_str(var, print_variant);
}
#[test]
fn test_variant_to_str() {
let var = ast_util::respan(ast_util::dummy_sp(), {
name: "principle_skinner",
attrs: [],
args: [],
id: 0,
disr_expr: none
});
let varstr = variant_to_str(var);
assert varstr == "principle_skinner";
}
fn cbox(s: ps, u: uint) { s.boxes += [pp::consistent]; pp::cbox(s.s, u); }
fn box(s: ps, u: uint, b: pp::breaks) { s.boxes += [b]; pp::box(s.s, u, b); }
@ -436,23 +454,7 @@ fn print_item(s: ps, &&item: @ast::item) {
maybe_print_comment(s, v.span.lo);
print_outer_attributes(s, v.node.attrs);
ibox(s, indent_unit);
word(s.s, v.node.name);
if vec::len(v.node.args) > 0u {
popen(s);
fn print_variant_arg(s: ps, arg: ast::variant_arg) {
print_type(s, arg.ty);
}
commasep(s, consistent, v.node.args, print_variant_arg);
pclose(s);
}
alt v.node.disr_expr {
some(d) {
space(s.s);
word_space(s, "=");
print_expr(s, d);
}
_ {}
}
print_variant(s, v);
word(s.s, ",");
end(s);
maybe_print_trailing_comment(s, v.span, none::<uint>);
@ -510,6 +512,26 @@ fn print_item(s: ps, &&item: @ast::item) {
s.ann.post(ann_node);
}
fn print_variant(s: ps, v: ast::variant) {
word(s.s, v.node.name);
if vec::len(v.node.args) > 0u {
popen(s);
fn print_variant_arg(s: ps, arg: ast::variant_arg) {
print_type(s, arg.ty);
}
commasep(s, consistent, v.node.args, print_variant_arg);
pclose(s);
}
alt v.node.disr_expr {
some(d) {
space(s.s);
word_space(s, "=");
print_expr(s, d);
}
_ {}
}
}
fn print_ty_method(s: ps, m: ast::ty_method) {
hardbreak_if_not_bol(s);
cbox(s, indent_unit);