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/*
* Copyright (c) 2015 Andrew Kelley
*
* This file is part of zig, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#ifndef ZIG_PARSER_HPP
#define ZIG_PARSER_HPP
#include "list.hpp"
#include "buffer.hpp"
#include "tokenizer.hpp"
struct AstNode;
struct CodeGenNode;
enum NodeType {
NodeTypeRoot,
NodeTypeRootExportDecl,
NodeTypeFnProto,
NodeTypeFnDef,
NodeTypeFnDecl,
NodeTypeParamDecl,
NodeTypeType,
NodeTypeBlock,
NodeTypeExternBlock,
NodeTypeDirective,
NodeTypeReturnExpr,
NodeTypeBinOpExpr,
NodeTypeCastExpr,
NodeTypeNumberLiteral,
NodeTypeStringLiteral,
NodeTypeUnreachable,
NodeTypeSymbol,
NodeTypePrefixOpExpr,
NodeTypeFnCallExpr,
};
struct AstNodeRoot {
ZigList<AstNode *> top_level_decls;
};
enum FnProtoVisibMod {
FnProtoVisibModPrivate,
FnProtoVisibModPub,
FnProtoVisibModExport,
};
struct AstNodeFnProto {
ZigList<AstNode *> *directives;
FnProtoVisibMod visib_mod;
Buf name;
ZigList<AstNode *> params;
AstNode *return_type;
};
struct AstNodeFnDef {
AstNode *fn_proto;
AstNode *body;
};
struct AstNodeFnDecl {
AstNode *fn_proto;
};
struct AstNodeParamDecl {
Buf name;
AstNode *type;
};
enum AstNodeTypeType {
AstNodeTypeTypePrimitive,
AstNodeTypeTypePointer,
};
struct AstNodeType {
AstNodeTypeType type;
Buf primitive_name;
AstNode *child_type;
bool is_const;
};
struct AstNodeBlock {
ZigList<AstNode *> statements;
};
struct AstNodeReturnExpr {
// might be null in case of return void;
AstNode *expr;
};
enum BinOpType {
BinOpTypeInvalid,
// TODO: include assignment?
BinOpTypeBoolOr,
BinOpTypeBoolAnd,
BinOpTypeCmpEq,
BinOpTypeCmpNotEq,
BinOpTypeCmpLessThan,
BinOpTypeCmpGreaterThan,
BinOpTypeCmpLessOrEq,
BinOpTypeCmpGreaterOrEq,
BinOpTypeBinOr,
BinOpTypeBinXor,
BinOpTypeBinAnd,
BinOpTypeBitShiftLeft,
BinOpTypeBitShiftRight,
BinOpTypeAdd,
BinOpTypeSub,
BinOpTypeMult,
BinOpTypeDiv,
BinOpTypeMod,
};
struct AstNodeBinOpExpr {
AstNode *op1;
BinOpType bin_op;
AstNode *op2;
};
struct AstNodeFnCallExpr {
AstNode *fn_ref_expr;
ZigList<AstNode *> params;
};
struct AstNodeExternBlock {
ZigList<AstNode *> *directives;
ZigList<AstNode *> fn_decls;
};
struct AstNodeDirective {
Buf name;
Buf param;
};
struct AstNodeRootExportDecl {
Buf type;
Buf name;
ZigList<AstNode *> *directives;
};
struct AstNodeCastExpr {
AstNode *prefix_op_expr;
// if type is non-null, do cast, otherwise nothing
AstNode *type;
};
enum PrefixOp {
PrefixOpInvalid,
PrefixOpBoolNot,
PrefixOpBinNot,
PrefixOpNegation,
};
struct AstNodePrefixOpExpr {
PrefixOp prefix_op;
AstNode *primary_expr;
};
struct AstNode {
enum NodeType type;
AstNode *parent;
int line;
int column;
CodeGenNode *codegen_node;
union {
AstNodeRoot root;
AstNodeRootExportDecl root_export_decl;
AstNodeFnDef fn_def;
AstNodeFnDecl fn_decl;
AstNodeFnProto fn_proto;
AstNodeType type;
AstNodeParamDecl param_decl;
AstNodeBlock block;
AstNodeReturnExpr return_expr;
AstNodeBinOpExpr bin_op_expr;
AstNodeExternBlock extern_block;
AstNodeDirective directive;
AstNodeCastExpr cast_expr;
AstNodePrefixOpExpr prefix_op_expr;
AstNodeFnCallExpr fn_call_expr;
Buf number;
Buf string;
Buf symbol;
} data;
};
__attribute__ ((format (printf, 2, 3)))
void ast_token_error(Token *token, const char *format, ...);
// This function is provided by generated code, generated by parsergen.cpp
AstNode * ast_parse(Buf *buf, ZigList<Token> *tokens);
const char *node_type_str(NodeType node_type);
void ast_print(AstNode *node, int indent);
#endif
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