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Implemented go to definition

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This commit is contained in:
Alexandros Naskos
2020-05-18 23:19:23 +03:00
parent acd85c0f39
commit b1ce06a80d
3 changed files with 139 additions and 50 deletions
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71
src/analysis.zig
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@@ -180,26 +180,42 @@ pub fn isPascalCase(name: []const u8) bool {
// ANALYSIS ENGINE
pub fn getDeclNameToken(tree: *ast.Tree, node: *ast.Node) ?ast.TokenIndex {
switch (node.id) {
.VarDecl => {
const vari = node.cast(ast.Node.VarDecl).?;
return vari.name_token;
},
.ParamDecl => {
const decl = node.cast(ast.Node.ParamDecl).?;
if (decl.name_token == null) return null;
return decl.name_token.?;
},
.FnProto => {
const func = node.cast(ast.Node.FnProto).?;
if (func.name_token == null) return null;
return func.name_token.?;
},
.ContainerField => {
const field = node.cast(ast.Node.ContainerField).?;
return field.name_token;
},
else => {},
}
return null;
}
fn getDeclName(tree: *ast.Tree, node: *ast.Node) ?[]const u8 {
return tree.tokenSlice(getDeclNameToken(tree, node) orelse return null);
}
/// Gets the child of node
pub fn getChild(tree: *ast.Tree, node: *ast.Node, name: []const u8) ?*ast.Node {
var index: usize = 0;
while (node.iterate(index)) |child| {
switch (child.id) {
.VarDecl => {
const vari = child.cast(ast.Node.VarDecl).?;
if (std.mem.eql(u8, tree.tokenSlice(vari.name_token), name)) return child;
},
.FnProto => {
const func = child.cast(ast.Node.FnProto).?;
if (func.name_token != null and std.mem.eql(u8, tree.tokenSlice(func.name_token.?), name)) return child;
},
.ContainerField => {
const field = child.cast(ast.Node.ContainerField).?;
if (std.mem.eql(u8, tree.tokenSlice(field.name_token), name)) return child;
},
else => {},
}
index += 1;
while (node.iterate(index)) |child| : (index += 1) {
const child_name = getDeclName(tree, child) orelse continue;
if (std.mem.eql(u8, child_name, name)) return child;
}
return null;
}
@@ -207,25 +223,8 @@ pub fn getChild(tree: *ast.Tree, node: *ast.Node, name: []const u8) ?*ast.Node {
/// Gets the child of slice
pub fn getChildOfSlice(tree: *ast.Tree, nodes: []*ast.Node, name: []const u8) ?*ast.Node {
for (nodes) |child| {
switch (child.id) {
.VarDecl => {
const vari = child.cast(ast.Node.VarDecl).?;
if (std.mem.eql(u8, tree.tokenSlice(vari.name_token), name)) return child;
},
.ParamDecl => {
const decl = child.cast(ast.Node.ParamDecl).?;
if (decl.name_token != null and std.mem.eql(u8, tree.tokenSlice(decl.name_token.?), name)) return child;
},
.FnProto => {
const func = child.cast(ast.Node.FnProto).?;
if (func.name_token != null and std.mem.eql(u8, tree.tokenSlice(func.name_token.?), name)) return child;
},
.ContainerField => {
const field = child.cast(ast.Node.ContainerField).?;
if (std.mem.eql(u8, tree.tokenSlice(field.name_token), name)) return child;
},
else => {},
}
const child_name = getDeclName(tree, child) orelse continue;
if (std.mem.eql(u8, child_name, name)) return child;
}
return null;
}