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Make indentation adjustable (hardcode 4 spaces for now)

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This commit is contained in:
Noam Preil 2020-09-08 14:08:40 -04:00
parent 58502b8bfe
commit ce29fc0947
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GPG Key ID: FC347E7C85BE8238
1 changed files with 8 additions and 5 deletions
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13
src/codegen/c.zig
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@ -11,6 +11,8 @@ const C = link.File.C;
const Decl = Module.Decl;
const mem = std.mem;
const indentation = " ";
/// Maps a name from Zig source to C. Currently, this will always give the same
/// output for any given input, sometimes resulting in broken identifiers.
fn map(allocator: *std.mem.Allocator, name: []const u8) ![]const u8 {
@ -87,6 +89,7 @@ fn genArray(file: *C, decl: *Decl) !void {
if (tv.val.cast(Value.Payload.Bytes)) |payload|
if (tv.ty.sentinel()) |sentinel|
if (sentinel.toUnsignedInt() == 0)
// TODO: static by default
try file.constants.writer().print("const char *const {} = \"{}\";\n", .{ name, payload.data })
else
return file.fail(decl.src(), "TODO byte arrays with non-zero sentinels", .{})
@ -166,7 +169,7 @@ fn genArg(ctx: *Context) !?[]u8 {
}
fn genRetVoid(ctx: *Context) !?[]u8 {
try ctx.file.main.writer().print(" return;\n", .{});
try ctx.file.main.writer().print(indentation ++ "return;\n", .{});
return null;
}
@ -182,7 +185,7 @@ fn genIntCast(ctx: *Context, inst: *Inst.UnOp) !?[]u8 {
const name = try ctx.name();
const from = ctx.inst_map.get(op) orelse
return ctx.file.fail(ctx.decl.src(), "Internal error in C backend: intCast argument not found in inst_map", .{});
try writer.writeAll(" const ");
try writer.writeAll(indentation ++ "const ");
try renderType(ctx, writer, inst.base.ty);
try writer.print(" {} = (", .{name});
try renderType(ctx, writer, inst.base.ty);
@ -193,7 +196,7 @@ fn genIntCast(ctx: *Context, inst: *Inst.UnOp) !?[]u8 {
fn genCall(ctx: *Context, inst: *Inst.Call) !?[]u8 {
const writer = ctx.file.main.writer();
const header = ctx.file.header.writer();
try writer.writeAll(" ");
try writer.writeAll(indentation);
if (inst.func.castTag(.constant)) |func_inst| {
if (func_inst.val.cast(Value.Payload.Function)) |func_val| {
const target = func_val.func.owner_decl;
@ -242,13 +245,13 @@ fn genBreak(ctx: *Context, inst: *Inst.NoOp) !?[]u8 {
}
fn genUnreach(ctx: *Context, inst: *Inst.NoOp) !?[]u8 {
try ctx.file.main.writer().writeAll(" zig_unreachable();\n");
try ctx.file.main.writer().writeAll(indentation ++ "zig_unreachable();\n");
return null;
}
fn genAsm(ctx: *Context, as: *Inst.Assembly) !?[]u8 {
const writer = ctx.file.main.writer();
try writer.writeAll(" ");
try writer.writeAll(indentation);
for (as.inputs) |i, index| {
if (i[0] == '{' and i[i.len - 1] == '}') {
const reg = i[1 .. i.len - 1];