authorgravatar for pfg@pfg.pwpfg <pfg@pfg.pw> 2020-07-16 04:22:05-07:00
committergravatar for pfg@pfg.pwpfg <pfg@pfg.pw> 2020-07-16 04:22:05-07:00
log83a0073b68f905786caccf5ce7907b7e562096fd
treecbe72a43b927537d0af74313b2efcf4d520b492f
parente079fdeee78d37a50c4e2a9fafe77903d62dbc34

stage2: period and suffixop

1 files changed, 39 insertions(+), 0 deletions(-)

src-self-hosted/astgen.zig+39
......@@ -33,6 +33,8 @@ pub fn expr(mod: *Module, scope: *Scope, node: *ast.Node) InnerError!*zir.Inst {
3333 .GreaterOrEqual => return cmp(mod, scope, node.castTag(.GreaterOrEqual).?, .gte),
3434 .LessThan => return cmp(mod, scope, node.castTag(.LessThan).?, .lt),
3535 .LessOrEqual => return cmp(mod, scope, node.castTag(.LessOrEqual).?, .lte),
36 .Period => return field(mod, scope, node.castTag(.Period).?),
37 .SuffixOp => return suffixOp(mod, scope, node.castTag(.SuffixOp).?),
3638 .BoolNot => return boolNot(mod, scope, node.castTag(.BoolNot).?),
3739 else => return mod.failNode(scope, node, "TODO implement astgen.Expr for {}", .{@tagName(node.tag)}),
3840 }
......@@ -121,6 +123,43 @@ fn assign(mod: *Module, scope: *Scope, infix_node: *ast.Node.SimpleInfixOp) Inne
121123 }
122124}
123125
126/// Identifier nodes -> ZIR string instruction
127pub fn identifierString(mod: *Module, scope: *Scope, node: *ast.Node.Identifier) InnerError!*zir.Inst {
128 const tree = scope.tree();
129 const src = tree.token_locs[node.token].start;
130
131 var ident_name = tree.tokenSlice(node.token);
132 if (std.mem.startsWith(u8, ident_name, "@"))
133 ident_name = ident_name[2 .. ident_name.len - 1];
134
135 return mod.addZIRInst(scope, src, zir.Inst.Str, .{ .bytes = ident_name }, .{});
136}
137
138fn field(mod: *Module, scope: *Scope, node: *ast.Node.SimpleInfixOp) InnerError!*zir.Inst {
139 const tree = scope.tree();
140 const src = tree.token_locs[node.op_token].start;
141
142 const lhs = try expr(mod, scope, node.lhs);
143 const field_name = try identifierString(mod, scope, node.rhs.castTag(.Identifier).?);
144
145 const pointer = try mod.addZIRInst(scope, src, zir.Inst.FieldPtr, .{ .object_ptr = lhs, .field_name = field_name }, .{});
146 return mod.addZIRInst(scope, src, zir.Inst.Deref, .{ .ptr = pointer }, .{});
147}
148
149fn suffixOp(mod: *Module, scope: *Scope, node: *ast.Node.SuffixOp) InnerError!*zir.Inst {
150 switch (node.op) {
151 .Deref => {
152 const tree = scope.tree();
153 const src = tree.token_locs[node.rtoken].start;
154
155 const lhs = try expr(mod, scope, node.lhs);
156
157 return mod.addZIRInst(scope, src, zir.Inst.Deref, .{ .ptr = lhs }, .{});
158 },
159 else => return mod.failNode(scope, &node.base, "TODO implement astGenExpr for suffixOp {}", .{node.op}),
160 }
161}
162
124163fn add(mod: *Module, scope: *Scope, infix_node: *ast.Node.SimpleInfixOp) InnerError!*zir.Inst {
125164 const lhs = try expr(mod, scope, infix_node.lhs);
126165 const rhs = try expr(mod, scope, infix_node.rhs);