std.zig.parser now parses for loops
parent
e24409ebe0
commit
7dd55a8007
150
std/zig/ast.zig
150
std/zig/ast.zig
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@ -20,12 +20,15 @@ pub const Node = struct {
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FnProto,
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ParamDecl,
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Block,
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Payload,
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ErrorPayload,
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ValuePayload,
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ValueIndexPayload,
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Else,
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Switch,
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SwitchCase,
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SwitchElse,
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While,
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For,
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InfixOp,
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PrefixOp,
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SuffixOp,
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@ -61,12 +64,15 @@ pub const Node = struct {
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Id.FnProto => @fieldParentPtr(NodeFnProto, "base", base).iterate(index),
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Id.ParamDecl => @fieldParentPtr(NodeParamDecl, "base", base).iterate(index),
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Id.Block => @fieldParentPtr(NodeBlock, "base", base).iterate(index),
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Id.Payload => @fieldParentPtr(NodePayload, "base", base).iterate(index),
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Id.ErrorPayload => @fieldParentPtr(NodeErrorPayload, "base", base).iterate(index),
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Id.ValuePayload => @fieldParentPtr(NodeValuePayload, "base", base).iterate(index),
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Id.ValueIndexPayload => @fieldParentPtr(NodeValueIndexPayload, "base", base).iterate(index),
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Id.Else => @fieldParentPtr(NodeSwitch, "base", base).iterate(index),
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Id.Switch => @fieldParentPtr(NodeSwitch, "base", base).iterate(index),
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Id.SwitchCase => @fieldParentPtr(NodeSwitchCase, "base", base).iterate(index),
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Id.SwitchElse => @fieldParentPtr(NodeSwitchElse, "base", base).iterate(index),
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Id.While => @fieldParentPtr(NodeWhile, "base", base).iterate(index),
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Id.For => @fieldParentPtr(NodeFor, "base", base).iterate(index),
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Id.InfixOp => @fieldParentPtr(NodeInfixOp, "base", base).iterate(index),
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Id.PrefixOp => @fieldParentPtr(NodePrefixOp, "base", base).iterate(index),
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Id.SuffixOp => @fieldParentPtr(NodeSuffixOp, "base", base).iterate(index),
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@ -103,12 +109,15 @@ pub const Node = struct {
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Id.FnProto => @fieldParentPtr(NodeFnProto, "base", base).firstToken(),
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Id.ParamDecl => @fieldParentPtr(NodeParamDecl, "base", base).firstToken(),
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Id.Block => @fieldParentPtr(NodeBlock, "base", base).firstToken(),
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Id.Payload => @fieldParentPtr(NodePayload, "base", base).firstToken(),
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Id.ErrorPayload => @fieldParentPtr(NodeErrorPayload, "base", base).firstToken(),
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Id.ValuePayload => @fieldParentPtr(NodeValuePayload, "base", base).firstToken(),
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Id.ValueIndexPayload => @fieldParentPtr(NodeValueIndexPayload, "base", base).firstToken(),
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Id.Else => @fieldParentPtr(NodeSwitch, "base", base).firstToken(),
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Id.Switch => @fieldParentPtr(NodeSwitch, "base", base).firstToken(),
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Id.SwitchCase => @fieldParentPtr(NodeSwitchCase, "base", base).firstToken(),
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Id.SwitchElse => @fieldParentPtr(NodeSwitchElse, "base", base).firstToken(),
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Id.While => @fieldParentPtr(NodeWhile, "base", base).firstToken(),
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Id.For => @fieldParentPtr(NodeFor, "base", base).firstToken(),
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Id.InfixOp => @fieldParentPtr(NodeInfixOp, "base", base).firstToken(),
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Id.PrefixOp => @fieldParentPtr(NodePrefixOp, "base", base).firstToken(),
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Id.SuffixOp => @fieldParentPtr(NodeSuffixOp, "base", base).firstToken(),
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@ -145,12 +154,15 @@ pub const Node = struct {
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Id.FnProto => @fieldParentPtr(NodeFnProto, "base", base).lastToken(),
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Id.ParamDecl => @fieldParentPtr(NodeParamDecl, "base", base).lastToken(),
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Id.Block => @fieldParentPtr(NodeBlock, "base", base).lastToken(),
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Id.Payload => @fieldParentPtr(NodePayload, "base", base).lastToken(),
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Id.ErrorPayload => @fieldParentPtr(NodeErrorPayload, "base", base).lastToken(),
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Id.ValuePayload => @fieldParentPtr(NodeValuePayload, "base", base).lastToken(),
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Id.ValueIndexPayload => @fieldParentPtr(NodeValueIndexPayload, "base", base).lastToken(),
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Id.Else => @fieldParentPtr(NodeElse, "base", base).lastToken(),
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Id.Switch => @fieldParentPtr(NodeSwitch, "base", base).lastToken(),
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Id.SwitchCase => @fieldParentPtr(NodeSwitchCase, "base", base).lastToken(),
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Id.SwitchElse => @fieldParentPtr(NodeSwitchElse, "base", base).lastToken(),
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Id.While => @fieldParentPtr(NodeWhile, "base", base).lastToken(),
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Id.For => @fieldParentPtr(NodeFor, "base", base).lastToken(),
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Id.InfixOp => @fieldParentPtr(NodeInfixOp, "base", base).lastToken(),
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Id.PrefixOp => @fieldParentPtr(NodePrefixOp, "base", base).lastToken(),
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Id.SuffixOp => @fieldParentPtr(NodeSuffixOp, "base", base).lastToken(),
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@ -557,27 +569,82 @@ pub const NodeBlock = struct {
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}
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};
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pub const NodePayload = struct {
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pub const NodeErrorPayload = struct {
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base: Node,
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lpipe: Token,
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is_ptr: bool,
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symbol: &NodeIdentifier,
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error_symbol: &NodeIdentifier,
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rpipe: Token,
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pub fn iterate(self: &NodePayload, index: usize) ?&Node {
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pub fn iterate(self: &NodeErrorPayload, index: usize) ?&Node {
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var i = index;
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if (i < 1) return &self.symbol.base;
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if (i < 1) return &self.error_symbol.base;
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i -= 1;
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return null;
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}
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pub fn firstToken(self: &NodePayload) Token {
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pub fn firstToken(self: &NodeErrorPayload) Token {
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return self.lpipe;
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}
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pub fn lastToken(self: &NodePayload) Token {
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pub fn lastToken(self: &NodeErrorPayload) Token {
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return self.rpipe;
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}
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};
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pub const NodeValuePayload = struct {
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base: Node,
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lpipe: Token,
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is_ptr: bool,
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value_symbol: &NodeIdentifier,
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rpipe: Token,
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pub fn iterate(self: &NodeValuePayload, index: usize) ?&Node {
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var i = index;
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if (i < 1) return &self.value_symbol.base;
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i -= 1;
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return null;
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}
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pub fn firstToken(self: &NodeValuePayload) Token {
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return self.lpipe;
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}
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pub fn lastToken(self: &NodeValuePayload) Token {
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return self.rpipe;
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}
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};
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pub const NodeValueIndexPayload = struct {
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base: Node,
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lpipe: Token,
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is_ptr: bool,
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value_symbol: &NodeIdentifier,
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index_symbol: ?&NodeIdentifier,
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rpipe: Token,
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pub fn iterate(self: &NodeValueIndexPayload, index: usize) ?&Node {
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var i = index;
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if (i < 1) return &self.value_symbol.base;
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i -= 1;
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if (self.index_symbol) |index_symbol| {
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if (i < 1) return &index_symbol.base;
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i -= 1;
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}
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return null;
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}
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pub fn firstToken(self: &NodeValueIndexPayload) Token {
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return self.lpipe;
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}
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pub fn lastToken(self: &NodeValueIndexPayload) Token {
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return self.rpipe;
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}
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};
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@ -585,7 +652,7 @@ pub const NodePayload = struct {
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pub const NodeElse = struct {
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base: Node,
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else_token: Token,
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payload: ?&NodePayload,
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payload: ?&NodeErrorPayload,
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body: &Node,
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pub fn iterate(self: &NodeElse, index: usize) ?&Node {
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@ -642,7 +709,7 @@ pub const NodeSwitch = struct {
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pub const NodeSwitchCase = struct {
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base: Node,
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items: ArrayList(&Node),
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payload: ?&NodePayload,
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payload: ?&NodeValuePayload,
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expr: &Node,
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pub fn iterate(self: &NodeSwitchCase, index: usize) ?&Node {
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@ -694,7 +761,7 @@ pub const NodeWhile = struct {
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inline_token: ?Token,
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while_token: Token,
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condition: &Node,
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payload: ?&NodePayload,
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payload: ?&NodeValuePayload,
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continue_expr: ?&Node,
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body: &Node,
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@"else": ?&NodeElse,
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@ -747,6 +814,59 @@ pub const NodeWhile = struct {
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}
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};
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pub const NodeFor = struct {
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base: Node,
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label: ?Token,
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inline_token: ?Token,
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for_token: Token,
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array_expr: &Node,
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payload: ?&NodeValueIndexPayload,
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body: &Node,
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@"else": ?&NodeElse,
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pub fn iterate(self: &NodeFor, index: usize) ?&Node {
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var i = index;
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if (i < 1) return self.array_expr;
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i -= 1;
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if (self.payload) |payload| {
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if (i < 1) return &payload.base;
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i -= 1;
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}
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if (i < 1) return self.body;
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i -= 1;
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if (self.@"else") |@"else"| {
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if (i < 1) return &@"else".base;
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i -= 1;
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}
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return null;
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}
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pub fn firstToken(self: &NodeFor) Token {
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if (self.label) |label| {
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return label;
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}
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if (self.inline_token) |inline_token| {
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return inline_token;
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}
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return self.for_token;
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}
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pub fn lastToken(self: &NodeFor) Token {
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if (self.@"else") |@"else"| {
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return @"else".body.lastToken();
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}
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return self.body.lastToken();
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}
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};
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pub const NodeInfixOp = struct {
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base: Node,
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op_token: Token,
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@ -781,7 +901,7 @@ pub const NodeInfixOp = struct {
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BitXor,
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BoolAnd,
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BoolOr,
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Catch: ?&NodePayload,
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Catch: ?&NodeErrorPayload,
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Div,
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EqualEqual,
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ErrorUnion,
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@ -170,7 +170,9 @@ pub const Parser = struct {
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FieldInitListCommaOrEnd: ListSave(&ast.NodeFieldInitializer),
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FieldListCommaOrEnd: &ast.NodeContainerDecl,
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SwitchCaseOrEnd: ListSave(&ast.NodeSwitchCase),
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Payload: &?&ast.NodePayload,
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ErrorPayload: &?&ast.NodeErrorPayload,
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ValuePayload: &?&ast.NodeValuePayload,
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ValueIndexPayload: &?&ast.NodeValueIndexPayload,
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SwitchCaseCommaOrEnd: ListSave(&ast.NodeSwitchCase),
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SwitchCaseItem: &ArrayList(&ast.Node),
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SwitchCaseItemCommaOrEnd: &ArrayList(&ast.Node),
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@ -769,7 +771,7 @@ pub const Parser = struct {
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stack.append(State { .UnwrapExpressionEnd = dest_ptr }) catch unreachable;
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try stack.append(State { .Expression = DestPtr { .Field = &node.rhs } });
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try stack.append(State { .Payload = &node.op.Catch });
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try stack.append(State { .ErrorPayload = &node.op.Catch });
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continue;
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},
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Token.Id.QuestionMarkQuestionMark => {
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@ -1471,7 +1473,15 @@ pub const Parser = struct {
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continue;
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},
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Token.Id.Keyword_for => {
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@panic("TODO: inline for");
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stack.append(State {
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.For = LoopCtx {
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.label = null,
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.inline_token = null,
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.loop_token = token,
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.dest_ptr = dest_ptr,
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}
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}) catch unreachable;
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continue;
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},
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Token.Id.Keyword_switch => {
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const node = try arena.create(ast.NodeSwitch);
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@ -1614,7 +1624,7 @@ pub const Parser = struct {
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try list_state.list.append(node);
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stack.append(State { .SwitchCaseCommaOrEnd = list_state }) catch unreachable;
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try stack.append(State { .Expression = DestPtr{ .Field = &node.expr } });
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try stack.append(State { .Payload = &node.payload });
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try stack.append(State { .ValuePayload = &node.payload });
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const maybe_else = self.getNextToken();
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if (maybe_else.id == Token.Id.Keyword_else) {
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@ -1681,7 +1691,7 @@ pub const Parser = struct {
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*dest = node;
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stack.append(State { .Expression = DestPtr { .Field = &node.body } }) catch unreachable;
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try stack.append(State { .Payload = &node.payload });
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try stack.append(State { .ErrorPayload = &node.payload });
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},
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State.WhileContinueExpr => |dest| {
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@ -1696,7 +1706,26 @@ pub const Parser = struct {
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try stack.append(State { .Expression = DestPtr { .NullableField = dest } });
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},
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State.Payload => |dest| {
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State.ErrorPayload => |dest| {
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const lpipe = self.getNextToken();
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if (lpipe.id != Token.Id.Pipe) {
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self.putBackToken(lpipe);
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continue;
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}
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const error_symbol = (try self.eatToken(&stack, Token.Id.Identifier)) ?? continue;
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const rpipe = (try self.eatToken(&stack, Token.Id.Pipe)) ?? continue;
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const node = try arena.create(ast.NodeErrorPayload);
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*node = ast.NodeErrorPayload {
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.base = self.initNode(ast.Node.Id.ErrorPayload),
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.lpipe = lpipe,
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.error_symbol = try self.createIdentifier(arena, error_symbol),
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.rpipe = rpipe
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};
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*dest = node;
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},
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State.ValuePayload => |dest| {
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const lpipe = self.getNextToken();
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if (lpipe.id != Token.Id.Pipe) {
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self.putBackToken(lpipe);
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@ -1713,14 +1742,56 @@ pub const Parser = struct {
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}
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};
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const ident = (try self.eatToken(&stack, Token.Id.Identifier)) ?? continue;
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const value_symbol = (try self.eatToken(&stack, Token.Id.Identifier)) ?? continue;
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const rpipe = (try self.eatToken(&stack, Token.Id.Pipe)) ?? continue;
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const node = try arena.create(ast.NodePayload);
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*node = ast.NodePayload {
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.base = self.initNode(ast.Node.Id.Payload),
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const node = try arena.create(ast.NodeValuePayload);
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*node = ast.NodeValuePayload {
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.base = self.initNode(ast.Node.Id.ValuePayload),
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.lpipe = lpipe,
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.is_ptr = is_ptr,
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.symbol = try self.createIdentifier(arena, ident),
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.value_symbol = try self.createIdentifier(arena, value_symbol),
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.rpipe = rpipe
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};
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*dest = node;
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},
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State.ValueIndexPayload => |dest| {
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const lpipe = self.getNextToken();
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if (lpipe.id != Token.Id.Pipe) {
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self.putBackToken(lpipe);
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continue;
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}
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const is_ptr = blk: {
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const asterik = self.getNextToken();
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if (asterik.id == Token.Id.Asterisk) {
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break :blk true;
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} else {
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self.putBackToken(asterik);
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break :blk false;
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}
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};
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const value_symbol = (try self.eatToken(&stack, Token.Id.Identifier)) ?? continue;
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const index_symbol = blk: {
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const comma = self.getNextToken();
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if (comma.id != Token.Id.Comma) {
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self.putBackToken(comma);
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break :blk null;
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}
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const symbol = (try self.eatToken(&stack, Token.Id.Identifier)) ?? continue;
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break :blk try self.createIdentifier(arena, symbol);
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};
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const rpipe = (try self.eatToken(&stack, Token.Id.Pipe)) ?? continue;
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const node = try arena.create(ast.NodeValueIndexPayload);
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*node = ast.NodeValueIndexPayload {
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.base = self.initNode(ast.Node.Id.ValueIndexPayload),
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.lpipe = lpipe,
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.is_ptr = is_ptr,
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.value_symbol = try self.createIdentifier(arena, value_symbol),
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.index_symbol = index_symbol,
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.rpipe = rpipe
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};
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*dest = node;
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@ -1986,13 +2057,32 @@ pub const Parser = struct {
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stack.append(State { .Else = &node.@"else" }) catch unreachable;
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try stack.append(State { .Expression = DestPtr { .Field = &node.body } });
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try stack.append(State { .WhileContinueExpr = &node.continue_expr });
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try stack.append(State { .Payload = &node.payload });
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try stack.append(State { .ValuePayload = &node.payload });
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try stack.append(State { .ExpectToken = Token.Id.RParen });
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try stack.append(State { .Expression = DestPtr { .Field = &node.condition } });
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try stack.append(State { .ExpectToken = Token.Id.LParen });
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},
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State.For => |ctx| {
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const node = try arena.create(ast.NodeFor);
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*node = ast.NodeFor {
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.base = self.initNode(ast.Node.Id.For),
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.label = ctx.label,
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.inline_token = ctx.inline_token,
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.for_token = ctx.loop_token,
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.array_expr = undefined,
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.payload = null,
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.body = undefined,
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.@"else" = null,
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};
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ctx.dest_ptr.store(&node.base);
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stack.append(State { .Else = &node.@"else" }) catch unreachable;
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try stack.append(State { .Expression = DestPtr { .Field = &node.body } });
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try stack.append(State { .ValueIndexPayload = &node.payload });
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try stack.append(State { .ExpectToken = Token.Id.RParen });
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try stack.append(State { .Expression = DestPtr { .Field = &node.array_expr } });
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try stack.append(State { .ExpectToken = Token.Id.LParen });
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},
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State.Block => |block| {
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@ -2071,7 +2161,9 @@ pub const Parser = struct {
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ast.Node.Id.EnumTag,
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ast.Node.Id.ParamDecl,
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ast.Node.Id.Block,
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ast.Node.Id.Payload,
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ast.Node.Id.ErrorPayload,
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ast.Node.Id.ValuePayload,
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ast.Node.Id.ValueIndexPayload,
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||||
ast.Node.Id.Switch,
|
||||
ast.Node.Id.SwitchCase,
|
||||
ast.Node.Id.SwitchElse,
|
||||
|
@ -2087,6 +2179,15 @@ pub const Parser = struct {
|
|||
|
||||
n = while_node.body;
|
||||
},
|
||||
ast.Node.Id.For => {
|
||||
const for_node = @fieldParentPtr(ast.NodeFor, "base", n);
|
||||
if (for_node.@"else") |@"else"| {
|
||||
n = @"else".base;
|
||||
continue;
|
||||
}
|
||||
|
||||
n = for_node.body;
|
||||
},
|
||||
ast.Node.Id.Else => {
|
||||
const else_node = @fieldParentPtr(ast.NodeElse, "base", n);
|
||||
n = else_node.body;
|
||||
|
@ -2982,10 +3083,33 @@ pub const Parser = struct {
|
|||
try stack.append(RenderState { .Expression = rhs });
|
||||
}
|
||||
},
|
||||
ast.Node.Id.Payload => {
|
||||
const payload = @fieldParentPtr(ast.NodePayload, "base", base);
|
||||
ast.Node.Id.ErrorPayload => {
|
||||
const payload = @fieldParentPtr(ast.NodeErrorPayload, "base", base);
|
||||
try stack.append(RenderState { .Text = "|"});
|
||||
try stack.append(RenderState { .Expression = &payload.symbol.base });
|
||||
try stack.append(RenderState { .Expression = &payload.error_symbol.base });
|
||||
try stack.append(RenderState { .Text = "|"});
|
||||
},
|
||||
ast.Node.Id.ValuePayload => {
|
||||
const payload = @fieldParentPtr(ast.NodeValuePayload, "base", base);
|
||||
try stack.append(RenderState { .Text = "|"});
|
||||
try stack.append(RenderState { .Expression = &payload.value_symbol.base });
|
||||
|
||||
if (payload.is_ptr) {
|
||||
try stack.append(RenderState { .Text = "*"});
|
||||
}
|
||||
|
||||
try stack.append(RenderState { .Text = "|"});
|
||||
},
|
||||
ast.Node.Id.ValueIndexPayload => {
|
||||
const payload = @fieldParentPtr(ast.NodeValueIndexPayload, "base", base);
|
||||
try stack.append(RenderState { .Text = "|"});
|
||||
|
||||
if (payload.index_symbol) |index_symbol| {
|
||||
try stack.append(RenderState { .Expression = &index_symbol.base });
|
||||
try stack.append(RenderState { .Text = ", "});
|
||||
}
|
||||
|
||||
try stack.append(RenderState { .Expression = &payload.value_symbol.base });
|
||||
|
||||
if (payload.is_ptr) {
|
||||
try stack.append(RenderState { .Text = "*"});
|
||||
|
@ -3303,6 +3427,48 @@ pub const Parser = struct {
|
|||
try stack.append(RenderState { .Expression = while_node.condition });
|
||||
try stack.append(RenderState { .Text = "(" });
|
||||
},
|
||||
ast.Node.Id.For => {
|
||||
const for_node = @fieldParentPtr(ast.NodeFor, "base", base);
|
||||
if (for_node.label) |label| {
|
||||
try stream.print("{}: ", self.tokenizer.getTokenSlice(label));
|
||||
}
|
||||
|
||||
if (for_node.inline_token) |inline_token| {
|
||||
try stream.print("{} ", self.tokenizer.getTokenSlice(inline_token));
|
||||
}
|
||||
|
||||
try stream.print("{} ", self.tokenizer.getTokenSlice(for_node.for_token));
|
||||
|
||||
if (for_node.@"else") |@"else"| {
|
||||
try stack.append(RenderState { .Expression = &@"else".base });
|
||||
|
||||
if (for_node.body.id == ast.Node.Id.Block) {
|
||||
try stack.append(RenderState { .Text = " " });
|
||||
} else {
|
||||
try stack.append(RenderState { .Text = "\n" });
|
||||
}
|
||||
}
|
||||
|
||||
if (for_node.body.id == ast.Node.Id.Block) {
|
||||
try stack.append(RenderState { .Expression = for_node.body });
|
||||
try stack.append(RenderState { .Text = " " });
|
||||
} else {
|
||||
try stack.append(RenderState { .Indent = indent });
|
||||
try stack.append(RenderState { .Expression = for_node.body });
|
||||
try stack.append(RenderState.PrintIndent);
|
||||
try stack.append(RenderState { .Indent = indent + indent_delta });
|
||||
try stack.append(RenderState { .Text = "\n" });
|
||||
}
|
||||
|
||||
if (for_node.payload) |payload| {
|
||||
try stack.append(RenderState { .Expression = &payload.base });
|
||||
try stack.append(RenderState { .Text = " " });
|
||||
}
|
||||
|
||||
try stack.append(RenderState { .Text = ")" });
|
||||
try stack.append(RenderState { .Expression = for_node.array_expr });
|
||||
try stack.append(RenderState { .Text = "(" });
|
||||
},
|
||||
|
||||
ast.Node.Id.StructField,
|
||||
ast.Node.Id.UnionTag,
|
||||
|
@ -4022,10 +4188,10 @@ test "zig fmt: for" {
|
|||
\\ continue;
|
||||
\\
|
||||
\\ const res = for (a) |v, i| {
|
||||
\\ breal v;
|
||||
\\ break v;
|
||||
\\ } else {
|
||||
\\ unreachable;
|
||||
\\ }
|
||||
\\ };
|
||||
\\
|
||||
\\ var num: usize = 0;
|
||||
\\ inline for (a) |v, i| {
|
||||
|
|
Loading…
Reference in New Issue