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move Zcu.LazySrcLoc to std.zig.LazySrcLoc

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Part of an effort to ship more of the compiler in source form.
This commit is contained in:
Andrew Kelley
2024-02-26 20:35:26 -07:00
parent 4e2570baaf
commit f7143e18e3
10 changed files with 521 additions and 521 deletions
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542
src/Module.zig
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@@ -13,6 +13,7 @@ const BigIntConst = std.math.big.int.Const;
const BigIntMutable = std.math.big.int.Mutable;
const Target = std.Target;
const Ast = std.zig.Ast;
const LazySrcLoc = std.zig.LazySrcLoc;
/// Deprecated, use `Zcu`.
const Module = Zcu;
@@ -664,6 +665,101 @@ pub const Decl = struct {
if (decl.alignment != .none) return decl.alignment;
return decl.ty.abiAlignment(zcu);
}
/// Upgrade a `LazySrcLoc` to a `SrcLoc` based on the `Decl` provided.
pub fn toSrcLoc(decl: *Decl, lazy: LazySrcLoc, mod: *Module) SrcLoc {
return switch (lazy) {
.unneeded,
.entire_file,
.byte_abs,
.token_abs,
.node_abs,
=> .{
.file_scope = decl.getFileScope(mod),
.parent_decl_node = 0,
.lazy = lazy,
},
.byte_offset,
.token_offset,
.node_offset,
.node_offset_main_token,
.node_offset_initializer,
.node_offset_var_decl_ty,
.node_offset_var_decl_align,
.node_offset_var_decl_section,
.node_offset_var_decl_addrspace,
.node_offset_var_decl_init,
.node_offset_builtin_call_arg0,
.node_offset_builtin_call_arg1,
.node_offset_builtin_call_arg2,
.node_offset_builtin_call_arg3,
.node_offset_builtin_call_arg4,
.node_offset_builtin_call_arg5,
.node_offset_ptrcast_operand,
.node_offset_array_access_index,
.node_offset_slice_ptr,
.node_offset_slice_start,
.node_offset_slice_end,
.node_offset_slice_sentinel,
.node_offset_call_func,
.node_offset_field_name,
.node_offset_field_name_init,
.node_offset_deref_ptr,
.node_offset_asm_source,
.node_offset_asm_ret_ty,
.node_offset_if_cond,
.node_offset_bin_op,
.node_offset_bin_lhs,
.node_offset_bin_rhs,
.node_offset_switch_operand,
.node_offset_switch_special_prong,
.node_offset_switch_range,
.node_offset_switch_prong_capture,
.node_offset_switch_prong_tag_capture,
.node_offset_fn_type_align,
.node_offset_fn_type_addrspace,
.node_offset_fn_type_section,
.node_offset_fn_type_cc,
.node_offset_fn_type_ret_ty,
.node_offset_param,
.token_offset_param,
.node_offset_anyframe_type,
.node_offset_lib_name,
.node_offset_array_type_len,
.node_offset_array_type_sentinel,
.node_offset_array_type_elem,
.node_offset_un_op,
.node_offset_ptr_elem,
.node_offset_ptr_sentinel,
.node_offset_ptr_align,
.node_offset_ptr_addrspace,
.node_offset_ptr_bitoffset,
.node_offset_ptr_hostsize,
.node_offset_container_tag,
.node_offset_field_default,
.node_offset_init_ty,
.node_offset_store_ptr,
.node_offset_store_operand,
.node_offset_return_operand,
.for_input,
.for_capture_from_input,
.array_cat_lhs,
.array_cat_rhs,
=> .{
.file_scope = decl.getFileScope(mod),
.parent_decl_node = decl.src_node,
.lazy = lazy,
},
inline .call_arg,
.fn_proto_param,
=> |x| .{
.file_scope = decl.getFileScope(mod),
.parent_decl_node = mod.declPtr(x.decl).src_node,
.lazy = lazy,
},
};
}
};
/// This state is attached to every Decl when Module emit_h is non-null.
@@ -1951,452 +2047,6 @@ pub const SrcLoc = struct {
}
};
/// This wraps a simple integer in debug builds so that later on we can find out
/// where in semantic analysis the value got set.
const TracedOffset = struct {
x: i32,
trace: std.debug.Trace = .{},
const want_tracing = build_options.value_tracing;
};
/// Resolving a source location into a byte offset may require doing work
/// that we would rather not do unless the error actually occurs.
/// Therefore we need a data structure that contains the information necessary
/// to lazily produce a `SrcLoc` as required.
/// Most of the offsets in this data structure are relative to the containing Decl.
/// This makes the source location resolve properly even when a Decl gets
/// shifted up or down in the file, as long as the Decl's contents itself
/// do not change.
pub const LazySrcLoc = union(enum) {
/// When this tag is set, the code that constructed this `LazySrcLoc` is asserting
/// that all code paths which would need to resolve the source location are
/// unreachable. If you are debugging this tag incorrectly being this value,
/// look into using reverse-continue with a memory watchpoint to see where the
/// value is being set to this tag.
unneeded,
/// Means the source location points to an entire file; not any particular
/// location within the file. `file_scope` union field will be active.
entire_file,
/// The source location points to a byte offset within a source file,
/// offset from 0. The source file is determined contextually.
/// Inside a `SrcLoc`, the `file_scope` union field will be active.
byte_abs: u32,
/// The source location points to a token within a source file,
/// offset from 0. The source file is determined contextually.
/// Inside a `SrcLoc`, the `file_scope` union field will be active.
token_abs: u32,
/// The source location points to an AST node within a source file,
/// offset from 0. The source file is determined contextually.
/// Inside a `SrcLoc`, the `file_scope` union field will be active.
node_abs: u32,
/// The source location points to a byte offset within a source file,
/// offset from the byte offset of the Decl within the file.
/// The Decl is determined contextually.
byte_offset: u32,
/// This data is the offset into the token list from the Decl token.
/// The Decl is determined contextually.
token_offset: u32,
/// The source location points to an AST node, which is this value offset
/// from its containing Decl node AST index.
/// The Decl is determined contextually.
node_offset: TracedOffset,
/// The source location points to the main token of an AST node, found
/// by taking this AST node index offset from the containing Decl AST node.
/// The Decl is determined contextually.
node_offset_main_token: i32,
/// The source location points to the beginning of a struct initializer.
/// The Decl is determined contextually.
node_offset_initializer: i32,
/// The source location points to a variable declaration type expression,
/// found by taking this AST node index offset from the containing
/// Decl AST node, which points to a variable declaration AST node. Next, navigate
/// to the type expression.
/// The Decl is determined contextually.
node_offset_var_decl_ty: i32,
/// The source location points to the alignment expression of a var decl.
/// The Decl is determined contextually.
node_offset_var_decl_align: i32,
/// The source location points to the linksection expression of a var decl.
/// The Decl is determined contextually.
node_offset_var_decl_section: i32,
/// The source location points to the addrspace expression of a var decl.
/// The Decl is determined contextually.
node_offset_var_decl_addrspace: i32,
/// The source location points to the initializer of a var decl.
/// The Decl is determined contextually.
node_offset_var_decl_init: i32,
/// The source location points to the first parameter of a builtin
/// function call, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a builtin call AST node. Next, navigate
/// to the first parameter.
/// The Decl is determined contextually.
node_offset_builtin_call_arg0: i32,
/// Same as `node_offset_builtin_call_arg0` except arg index 1.
node_offset_builtin_call_arg1: i32,
node_offset_builtin_call_arg2: i32,
node_offset_builtin_call_arg3: i32,
node_offset_builtin_call_arg4: i32,
node_offset_builtin_call_arg5: i32,
/// Like `node_offset_builtin_call_arg0` but recurses through arbitrarily many calls
/// to pointer cast builtins.
node_offset_ptrcast_operand: i32,
/// The source location points to the index expression of an array access
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to an array access AST node. Next, navigate
/// to the index expression.
/// The Decl is determined contextually.
node_offset_array_access_index: i32,
/// The source location points to the LHS of a slice expression
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a slice AST node. Next, navigate
/// to the sentinel expression.
/// The Decl is determined contextually.
node_offset_slice_ptr: i32,
/// The source location points to start expression of a slice expression
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a slice AST node. Next, navigate
/// to the sentinel expression.
/// The Decl is determined contextually.
node_offset_slice_start: i32,
/// The source location points to the end expression of a slice
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a slice AST node. Next, navigate
/// to the sentinel expression.
/// The Decl is determined contextually.
node_offset_slice_end: i32,
/// The source location points to the sentinel expression of a slice
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a slice AST node. Next, navigate
/// to the sentinel expression.
/// The Decl is determined contextually.
node_offset_slice_sentinel: i32,
/// The source location points to the callee expression of a function
/// call expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a function call AST node. Next, navigate
/// to the callee expression.
/// The Decl is determined contextually.
node_offset_call_func: i32,
/// The payload is offset from the containing Decl AST node.
/// The source location points to the field name of:
/// * a field access expression (`a.b`), or
/// * the callee of a method call (`a.b()`)
/// The Decl is determined contextually.
node_offset_field_name: i32,
/// The payload is offset from the containing Decl AST node.
/// The source location points to the field name of the operand ("b" node)
/// of a field initialization expression (`.a = b`)
/// The Decl is determined contextually.
node_offset_field_name_init: i32,
/// The source location points to the pointer of a pointer deref expression,
/// found by taking this AST node index offset from the containing
/// Decl AST node, which points to a pointer deref AST node. Next, navigate
/// to the pointer expression.
/// The Decl is determined contextually.
node_offset_deref_ptr: i32,
/// The source location points to the assembly source code of an inline assembly
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to inline assembly AST node. Next, navigate
/// to the asm template source code.
/// The Decl is determined contextually.
node_offset_asm_source: i32,
/// The source location points to the return type of an inline assembly
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to inline assembly AST node. Next, navigate
/// to the return type expression.
/// The Decl is determined contextually.
node_offset_asm_ret_ty: i32,
/// The source location points to the condition expression of an if
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to an if expression AST node. Next, navigate
/// to the condition expression.
/// The Decl is determined contextually.
node_offset_if_cond: i32,
/// The source location points to a binary expression, such as `a + b`, found
/// by taking this AST node index offset from the containing Decl AST node.
/// The Decl is determined contextually.
node_offset_bin_op: i32,
/// The source location points to the LHS of a binary expression, found
/// by taking this AST node index offset from the containing Decl AST node,
/// which points to a binary expression AST node. Next, navigate to the LHS.
/// The Decl is determined contextually.
node_offset_bin_lhs: i32,
/// The source location points to the RHS of a binary expression, found
/// by taking this AST node index offset from the containing Decl AST node,
/// which points to a binary expression AST node. Next, navigate to the RHS.
/// The Decl is determined contextually.
node_offset_bin_rhs: i32,
/// The source location points to the operand of a switch expression, found
/// by taking this AST node index offset from the containing Decl AST node,
/// which points to a switch expression AST node. Next, navigate to the operand.
/// The Decl is determined contextually.
node_offset_switch_operand: i32,
/// The source location points to the else/`_` prong of a switch expression, found
/// by taking this AST node index offset from the containing Decl AST node,
/// which points to a switch expression AST node. Next, navigate to the else/`_` prong.
/// The Decl is determined contextually.
node_offset_switch_special_prong: i32,
/// The source location points to all the ranges of a switch expression, found
/// by taking this AST node index offset from the containing Decl AST node,
/// which points to a switch expression AST node. Next, navigate to any of the
/// range nodes. The error applies to all of them.
/// The Decl is determined contextually.
node_offset_switch_range: i32,
/// The source location points to the capture of a switch_prong.
/// The Decl is determined contextually.
node_offset_switch_prong_capture: i32,
/// The source location points to the tag capture of a switch_prong.
/// The Decl is determined contextually.
node_offset_switch_prong_tag_capture: i32,
/// The source location points to the align expr of a function type
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a function type AST node. Next, navigate to
/// the calling convention node.
/// The Decl is determined contextually.
node_offset_fn_type_align: i32,
/// The source location points to the addrspace expr of a function type
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a function type AST node. Next, navigate to
/// the calling convention node.
/// The Decl is determined contextually.
node_offset_fn_type_addrspace: i32,
/// The source location points to the linksection expr of a function type
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a function type AST node. Next, navigate to
/// the calling convention node.
/// The Decl is determined contextually.
node_offset_fn_type_section: i32,
/// The source location points to the calling convention of a function type
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a function type AST node. Next, navigate to
/// the calling convention node.
/// The Decl is determined contextually.
node_offset_fn_type_cc: i32,
/// The source location points to the return type of a function type
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a function type AST node. Next, navigate to
/// the return type node.
/// The Decl is determined contextually.
node_offset_fn_type_ret_ty: i32,
node_offset_param: i32,
token_offset_param: i32,
/// The source location points to the type expression of an `anyframe->T`
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to a `anyframe->T` expression AST node. Next, navigate
/// to the type expression.
/// The Decl is determined contextually.
node_offset_anyframe_type: i32,
/// The source location points to the string literal of `extern "foo"`, found
/// by taking this AST node index offset from the containing
/// Decl AST node, which points to a function prototype or variable declaration
/// expression AST node. Next, navigate to the string literal of the `extern "foo"`.
/// The Decl is determined contextually.
node_offset_lib_name: i32,
/// The source location points to the len expression of an `[N:S]T`
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to an `[N:S]T` expression AST node. Next, navigate
/// to the len expression.
/// The Decl is determined contextually.
node_offset_array_type_len: i32,
/// The source location points to the sentinel expression of an `[N:S]T`
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to an `[N:S]T` expression AST node. Next, navigate
/// to the sentinel expression.
/// The Decl is determined contextually.
node_offset_array_type_sentinel: i32,
/// The source location points to the elem expression of an `[N:S]T`
/// expression, found by taking this AST node index offset from the containing
/// Decl AST node, which points to an `[N:S]T` expression AST node. Next, navigate
/// to the elem expression.
/// The Decl is determined contextually.
node_offset_array_type_elem: i32,
/// The source location points to the operand of an unary expression.
/// The Decl is determined contextually.
node_offset_un_op: i32,
/// The source location points to the elem type of a pointer.
/// The Decl is determined contextually.
node_offset_ptr_elem: i32,
/// The source location points to the sentinel of a pointer.
/// The Decl is determined contextually.
node_offset_ptr_sentinel: i32,
/// The source location points to the align expr of a pointer.
/// The Decl is determined contextually.
node_offset_ptr_align: i32,
/// The source location points to the addrspace expr of a pointer.
/// The Decl is determined contextually.
node_offset_ptr_addrspace: i32,
/// The source location points to the bit-offset of a pointer.
/// The Decl is determined contextually.
node_offset_ptr_bitoffset: i32,
/// The source location points to the host size of a pointer.
/// The Decl is determined contextually.
node_offset_ptr_hostsize: i32,
/// The source location points to the tag type of an union or an enum.
/// The Decl is determined contextually.
node_offset_container_tag: i32,
/// The source location points to the default value of a field.
/// The Decl is determined contextually.
node_offset_field_default: i32,
/// The source location points to the type of an array or struct initializer.
/// The Decl is determined contextually.
node_offset_init_ty: i32,
/// The source location points to the LHS of an assignment.
/// The Decl is determined contextually.
node_offset_store_ptr: i32,
/// The source location points to the RHS of an assignment.
/// The Decl is determined contextually.
node_offset_store_operand: i32,
/// The source location points to the operand of a `return` statement, or
/// the `return` itself if there is no explicit operand.
/// The Decl is determined contextually.
node_offset_return_operand: i32,
/// The source location points to a for loop input.
/// The Decl is determined contextually.
for_input: struct {
/// Points to the for loop AST node.
for_node_offset: i32,
/// Picks one of the inputs from the condition.
input_index: u32,
},
/// The source location points to one of the captures of a for loop, found
/// by taking this AST node index offset from the containing
/// Decl AST node, which points to one of the input nodes of a for loop.
/// Next, navigate to the corresponding capture.
/// The Decl is determined contextually.
for_capture_from_input: i32,
/// The source location points to the argument node of a function call.
call_arg: struct {
decl: Decl.Index,
/// Points to the function call AST node.
call_node_offset: i32,
/// The index of the argument the source location points to.
arg_index: u32,
},
fn_proto_param: struct {
decl: Decl.Index,
/// Points to the function prototype AST node.
fn_proto_node_offset: i32,
/// The index of the parameter the source location points to.
param_index: u32,
},
array_cat_lhs: ArrayCat,
array_cat_rhs: ArrayCat,
const ArrayCat = struct {
/// Points to the array concat AST node.
array_cat_offset: i32,
/// The index of the element the source location points to.
elem_index: u32,
};
pub const nodeOffset = if (TracedOffset.want_tracing) nodeOffsetDebug else nodeOffsetRelease;
noinline fn nodeOffsetDebug(node_offset: i32) LazySrcLoc {
var result: LazySrcLoc = .{ .node_offset = .{ .x = node_offset } };
result.node_offset.trace.addAddr(@returnAddress(), "init");
return result;
}
fn nodeOffsetRelease(node_offset: i32) LazySrcLoc {
return .{ .node_offset = .{ .x = node_offset } };
}
/// Upgrade to a `SrcLoc` based on the `Decl` provided.
pub fn toSrcLoc(lazy: LazySrcLoc, decl: *Decl, mod: *Module) SrcLoc {
return switch (lazy) {
.unneeded,
.entire_file,
.byte_abs,
.token_abs,
.node_abs,
=> .{
.file_scope = decl.getFileScope(mod),
.parent_decl_node = 0,
.lazy = lazy,
},
.byte_offset,
.token_offset,
.node_offset,
.node_offset_main_token,
.node_offset_initializer,
.node_offset_var_decl_ty,
.node_offset_var_decl_align,
.node_offset_var_decl_section,
.node_offset_var_decl_addrspace,
.node_offset_var_decl_init,
.node_offset_builtin_call_arg0,
.node_offset_builtin_call_arg1,
.node_offset_builtin_call_arg2,
.node_offset_builtin_call_arg3,
.node_offset_builtin_call_arg4,
.node_offset_builtin_call_arg5,
.node_offset_ptrcast_operand,
.node_offset_array_access_index,
.node_offset_slice_ptr,
.node_offset_slice_start,
.node_offset_slice_end,
.node_offset_slice_sentinel,
.node_offset_call_func,
.node_offset_field_name,
.node_offset_field_name_init,
.node_offset_deref_ptr,
.node_offset_asm_source,
.node_offset_asm_ret_ty,
.node_offset_if_cond,
.node_offset_bin_op,
.node_offset_bin_lhs,
.node_offset_bin_rhs,
.node_offset_switch_operand,
.node_offset_switch_special_prong,
.node_offset_switch_range,
.node_offset_switch_prong_capture,
.node_offset_switch_prong_tag_capture,
.node_offset_fn_type_align,
.node_offset_fn_type_addrspace,
.node_offset_fn_type_section,
.node_offset_fn_type_cc,
.node_offset_fn_type_ret_ty,
.node_offset_param,
.token_offset_param,
.node_offset_anyframe_type,
.node_offset_lib_name,
.node_offset_array_type_len,
.node_offset_array_type_sentinel,
.node_offset_array_type_elem,
.node_offset_un_op,
.node_offset_ptr_elem,
.node_offset_ptr_sentinel,
.node_offset_ptr_align,
.node_offset_ptr_addrspace,
.node_offset_ptr_bitoffset,
.node_offset_ptr_hostsize,
.node_offset_container_tag,
.node_offset_field_default,
.node_offset_init_ty,
.node_offset_store_ptr,
.node_offset_store_operand,
.node_offset_return_operand,
.for_input,
.for_capture_from_input,
.array_cat_lhs,
.array_cat_rhs,
=> .{
.file_scope = decl.getFileScope(mod),
.parent_decl_node = decl.src_node,
.lazy = lazy,
},
inline .call_arg,
.fn_proto_param,
=> |x| .{
.file_scope = decl.getFileScope(mod),
.parent_decl_node = mod.declPtr(x.decl).src_node,
.lazy = lazy,
},
};
}
};
pub const SemaError = error{ OutOfMemory, AnalysisFail };
pub const CompileError = error{
OutOfMemory,