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Add code to create ASTs.

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This commit is contained in:
Danila Fedorin 2019-06-04 20:45:06 -07:00
parent a6d381b697
commit 7bd6913ac5
10 changed files with 1289 additions and 7 deletions
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6
language.grammar
View File

@ -112,7 +112,7 @@ rule expr_case
; ;
rule expr_case_branches rule expr_case_branches
= expr_case_branches? expr_case_branch = expr_case_branch expr_case_branches?
; ;
rule expr_case_branch rule expr_case_branch
@ -126,8 +126,8 @@ rule pattern
; ;
rule patterns rule patterns
= pattern = lower_identifier
| patterns tkn_comma pattern | lower_identifier tkn_comma patterns
; ;
rule type rule type

2
src/ast.hpp
View File

@ -37,7 +37,7 @@ namespace lily {
struct ast_op : ast { struct ast_op : ast {
enum class op { enum class op {
add, add,
subtrct, subtract,
times, times,
divide divide
} op; } op;

13
src/error.hpp Normal file
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@ -0,0 +1,13 @@
#pragma once
#include <iostream>
#include <string>
namespace lily {
struct error {
std::string message;
error(std::string m) : message(std::move(m)) {}
void print() { std::cout << message << std::endl; }
};
}

11
src/function.hpp Normal file
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@ -0,0 +1,11 @@
#pragma once
#include <string>
#include <vector>
#include "ast.hpp"
namespace lily {
struct function {
std::vector<std::string> params;
ast_ptr body;
};
};

11
src/main.cpp Normal file
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@ -0,0 +1,11 @@
#include "ast.hpp"
#include "pattern.hpp"
#include "parser.hpp"
int main() {
try {
lily::parse("defn add x y = { x + y }");
} catch(lily::error& e) {
std::cout << e.message << std::endl;
}
}

657
src/parser.c Normal file
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@ -0,0 +1,657 @@
#include "parser.h"
#include <stdlib.h>
#include <string.h>
/* == Nonterminals to String == */
const char* pgs_nonterminal_name(long int nt) {
switch(nt) {
case PGS_NONTERMINAL_S: return "S";
case PGS_NONTERMINAL_PROGRAM: return "program";
case PGS_NONTERMINAL_DEFINITION: return "definition";
case PGS_NONTERMINAL_DATA_BODY: return "data_body";
case PGS_NONTERMINAL_DATA_ELEMS: return "data_elems";
case PGS_NONTERMINAL_DATA_ELEM: return "data_elem";
case PGS_NONTERMINAL_DATA_ELEM_TYPES: return "data_elem_types";
case PGS_NONTERMINAL_TYPE_BODY: return "type_body";
case PGS_NONTERMINAL_PARAMS: return "params";
case PGS_NONTERMINAL_DEFN_BODY: return "defn_body";
case PGS_NONTERMINAL_EXPR: return "expr";
case PGS_NONTERMINAL_EXPR_ADD: return "expr_add";
case PGS_NONTERMINAL_EXPR_MUL: return "expr_mul";
case PGS_NONTERMINAL_EXPR_APP: return "expr_app";
case PGS_NONTERMINAL_EXPR_APP_BOTTOM: return "expr_app_bottom";
case PGS_NONTERMINAL_EXPR_CURLY: return "expr_curly";
case PGS_NONTERMINAL_EXPR_LET: return "expr_let";
case PGS_NONTERMINAL_EXPR_LETREC: return "expr_letrec";
case PGS_NONTERMINAL_EXPR_CASE: return "expr_case";
case PGS_NONTERMINAL_EXPR_CASE_BRANCHES: return "expr_case_branches";
case PGS_NONTERMINAL_EXPR_CASE_BRANCH: return "expr_case_branch";
case PGS_NONTERMINAL_PATTERN: return "pattern";
case PGS_NONTERMINAL_PATTERNS: return "patterns";
case PGS_NONTERMINAL_TYPE: return "type";
default: return "";
}
}
/* == Generated Tables and Variables== */
#define PGS_MAX_TERMINAL 22
int lexer_skip_table[24] = {
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
long int lexer_state_table[46][256] = {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 13, 14, 19, 18, 16, 17, 0, 20, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 0, 0, 0, 15, 0, 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 3, 0, 4, 4, 5, 6, 4, 4, 4, 4, 7, 4, 4, 8, 4, 4, 9, 4, 4, 4, 4, 10, 4, 4, 4, 4, 4, 4, 11, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 0, 0, 0, 0, 0, 0, 0, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 0, 0, 0, 0, 23, 0, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
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{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
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{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 27, 25, 25, 25, 28, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
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{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 30, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 25, 31, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
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{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 44, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 45, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 25, 0, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
};
long int lexer_final_table[46] = {
0,0,2,3,3,3,3,3,3,3,3,13,14,15,16,17,18,21,20,22,23,1,4,2,3,3,3,3,3,10,3,12,3,19,3,3,3,8,3,11,5,7,3,6,3,9,
};
long int parse_state_table[98][48]= {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 4, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 4, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 26, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 27, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 35, 36, 0, 37, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 29, 30, 34, 38, 39, 0, 31, 32, 33, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 45, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 46, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 47, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 49, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 50, 51, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 52, 53, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 54, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 55, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 35, 36, 0, 37, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 56, 30, 34, 38, 39, 0, 31, 32, 33, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 57, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 35, 36, 0, 37, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 58, 30, 34, 38, 39, 0, 31, 32, 33, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 26, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 59, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 60, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 61, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 38, 39, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 63, 38, 39, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 39, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 65, 39, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 66, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 67, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 68, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 69, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 70, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 71, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 52, 53, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 52, 53, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 57, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 57, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 73, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 72, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 73, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 74, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 75, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 76, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 61, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 77, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 41, 40, 42, 0, 0, 0, 35, 36, 0, 37, 0, 0, 0, 43, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 78, 30, 34, 38, 39, 0, 31, 32, 33, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 79, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 84, 83, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 80, 81, 82, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 73, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 85, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 86, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 73, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 87, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 88, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 84, 83, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 89, 81, 82, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 90, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 91, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 73, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 92, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 94, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 93, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
{ 0, 0, 0, 94, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97, 0, },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
};
long int parse_action_table[98][24] = {
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 2, -1, -1, -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 16, -1, -1, -1, -1, -1, -1, },
{ 4, -1, -1, -1, -1, 4, 4, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 5, -1, -1, -1, -1, 5, 5, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 6, -1, -1, -1, -1, 6, 6, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, -1, 0, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 17, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 9, -1, -1, -1, 0, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 11, 0, -1, -1, 11, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 47, -1, 47, -1, 47, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 19, -1, 19, -1, 19, -1, -1, -1, 0, 0, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 20, -1, 20, -1, 20, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 21, -1, 21, -1, 21, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 22, -1, 22, -1, 22, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 25, -1, 25, -1, 25, -1, -1, -1, 25, 25, 0, 0, },
{ -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, -1, 0, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, 28, -1, 28, 0, 28, -1, -1, -1, 28, 28, 28, 28, },
{ -1, -1, 29, 29, 29, -1, -1, -1, -1, -1, -1, -1, 29, -1, 29, 29, 29, -1, -1, -1, 29, 29, 29, 29, },
{ -1, -1, 31, 31, 31, -1, -1, -1, -1, -1, -1, -1, 31, -1, 31, 31, 31, -1, -1, -1, 31, 31, 31, 31, },
{ -1, -1, 32, 32, 32, -1, -1, -1, -1, -1, -1, -1, 32, -1, 32, 32, 32, -1, -1, -1, 32, 32, 32, 32, },
{ -1, -1, 33, 33, 33, -1, -1, -1, -1, -1, -1, -1, 33, -1, 33, 33, 33, -1, -1, -1, 33, 33, 33, 33, },
{ -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, -1, 0, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 7, -1, -1, -1, -1, 7, 7, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 8, -1, -1, -1, -1, 8, 8, 8, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 15, -1, -1, -1, -1, 15, 15, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ 18, -1, -1, -1, -1, 18, 18, 18, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 30, 30, 30, -1, -1, -1, -1, -1, -1, -1, 30, -1, 30, 30, 30, -1, -1, -1, 30, 30, 30, 30, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 13, -1, 0, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 23, -1, 23, -1, 23, -1, -1, -1, 23, 23, 0, 0, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 24, -1, 24, -1, 24, -1, -1, -1, 24, 24, 0, 0, },
{ -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, 26, -1, 26, 0, 26, -1, -1, -1, 26, 26, 26, 26, },
{ -1, -1, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, 27, -1, 27, 0, 27, -1, -1, -1, 27, 27, 27, 27, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 34, 34, 34, -1, -1, -1, -1, -1, -1, -1, 34, -1, 34, 34, 34, -1, -1, -1, 34, 34, 34, 34, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 12, -1, -1, -1, 12, -1, -1, -1, -1, -1, },
{ -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, -1, 0, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 14, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 39, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 42, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, 43, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 36, -1, 36, -1, 36, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 35, 35, -1, -1, -1, -1, -1, -1, 35, -1, 35, -1, 35, -1, 35, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 37, -1, 37, -1, 37, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 38, -1, 38, -1, 38, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 40, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, 41, 41, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 41, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 45, -1, 0, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 44, -1, -1, -1, -1, },
{ -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, },
{ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 46, -1, -1, -1, -1, -1, -1, -1, },
};
pgs_item items[47] = {
{ 0, 1 },
{ 1, 1 },
{ 1, 2 },
{ 2, 4 },
{ 2, 4 },
{ 2, 4 },
{ 2, 5 },
{ 3, 3 },
{ 4, 1 },
{ 4, 3 },
{ 5, 1 },
{ 5, 4 },
{ 6, 1 },
{ 6, 3 },
{ 7, 3 },
{ 8, 1 },
{ 8, 2 },
{ 9, 3 },
{ 10, 1 },
{ 10, 1 },
{ 10, 1 },
{ 10, 1 },
{ 11, 3 },
{ 11, 3 },
{ 11, 1 },
{ 12, 3 },
{ 12, 3 },
{ 12, 1 },
{ 13, 1 },
{ 13, 2 },
{ 14, 1 },
{ 14, 1 },
{ 14, 1 },
{ 14, 3 },
{ 15, 3 },
{ 16, 6 },
{ 17, 6 },
{ 18, 6 },
{ 19, 1 },
{ 19, 2 },
{ 20, 3 },
{ 21, 1 },
{ 21, 1 },
{ 21, 4 },
{ 22, 1 },
{ 22, 3 },
{ 23, 1 },
};
/* == General Code == */
void pgs_state_init(pgs_state* s) {
s->error = PGS_NONE;
s->errbuff[0] = '\0';
}
void pgs_state_error(pgs_state* s, pgs_error e, const char* message) {
s->error = e;
strncpy(s->errbuff, message, PGS_MAX_ERROR_LENGTH);
}
/* == Lexing Code == */
pgs_error pgs_token_list_init(pgs_token_list* l) {
l->capacity = 8;
l->token_count = 0;
l->tokens = malloc(sizeof(*(l->tokens)) * l->capacity);
if(l->tokens == NULL) return PGS_MALLOC;
return PGS_NONE;
}
pgs_error pgs_token_list_append(pgs_token_list* l, long int terminal, size_t from, size_t to) {
if(l->capacity == l->token_count) {
pgs_token* new_tokens = realloc(l->tokens, sizeof(*new_tokens) * l->capacity * 2);
if(new_tokens == NULL) return PGS_MALLOC;
l->capacity *= 2;
l->tokens = new_tokens;
}
l->tokens[l->token_count].terminal = terminal;
l->tokens[l->token_count].from = from;
l->tokens[l->token_count].to = to + 1;
l->token_count++;
return PGS_NONE;
}
pgs_token* pgs_token_list_at(pgs_token_list* l, size_t i) {
return (i < l->token_count) ? &l->tokens[i] : NULL;
}
pgs_error pgs_token_list_at_id(pgs_token_list* l, size_t i) {
if(i < l->token_count) return l->tokens[i].terminal;
return 0;
}
void pgs_token_list_free(pgs_token_list* l) {
free(l->tokens);
}
pgs_error pgs_do_lex(pgs_state* s, pgs_token_list* list, const char* source) {
pgs_error error;
size_t index = 0;
long int final;
long int last_final;
long int last_final_index;
long int last_start;
long int state;
size_t length = strlen(source);
if((error = pgs_token_list_init(list))) return error;
while(!error && index < length) {
last_final = -1;
last_final_index = -1;
last_start = index;
state = 1;
while(index < length && state) {
state = lexer_state_table[state][(unsigned int) source[index]];
if((final = lexer_final_table[state])) {
last_final = final;
last_final_index = index;
}
if(state) index++;
}
if(last_final == -1) break;
if(lexer_skip_table[last_final]) continue;
error = pgs_token_list_append(list, last_final, last_start, last_final_index);
}
if(error == PGS_MALLOC) {
pgs_token_list_free(list);
} else if (index != length) {
pgs_state_error(s, PGS_BAD_CHARACTER, "Invalid character at position");
pgs_token_list_free(list);
return PGS_BAD_CHARACTER;
}
return PGS_NONE;
}
/* == Parsing Code == */
pgs_tree* pgs_create_tree_nonterminal(long int nonterminal, size_t child_count) {
pgs_tree* tree = malloc(sizeof(*tree));
pgs_tree** children = malloc(sizeof(*children) * child_count);
if(tree == NULL || children == NULL) {
free(tree);
return NULL;
}
tree->variant = PGS_TREE_NONTERMINAL;
tree->tree_data.nonterminal.nonterminal = nonterminal;
tree->tree_data.nonterminal.child_count = child_count;
tree->tree_data.nonterminal.children = children;
return tree;
}
pgs_tree* pgs_create_tree_terminal(pgs_token* t) {
pgs_tree* tree = malloc(sizeof(*tree));
if(tree == NULL) return NULL;
tree->variant = PGS_TREE_TERMINAL;
tree->tree_data.terminal.token = *t;
return tree;
}
void pgs_free_tree_nonterminal(pgs_tree* t) {
size_t i;
for(i = 0; i < t->tree_data.nonterminal.child_count; i++) {
pgs_free_tree(t->tree_data.nonterminal.children[i]);
}
free(t->tree_data.nonterminal.children);
free(t);
}
void pgs_free_tree_terminal(pgs_tree* t) {
free(t);
}
long int pgs_tree_table_index(pgs_tree* t) {
switch(t->variant) {
case PGS_TREE_TERMINAL:
return PGS_TREE_T(*t);
case PGS_TREE_NONTERMINAL:
return PGS_TREE_NT(*t) + 2 + PGS_MAX_TERMINAL;
}
}
void pgs_free_tree(pgs_tree* t) {
switch(t->variant) {
case PGS_TREE_TERMINAL: pgs_free_tree_terminal(t); break;
case PGS_TREE_NONTERMINAL: pgs_free_tree_nonterminal(t); break;
}
}
pgs_error pgs_parse_stack_init(pgs_parse_stack* s) {
s->capacity = 8;
s->size = 1;
s->data = malloc(sizeof(*(s->data)) * s->capacity);
if(s->data == NULL) return PGS_MALLOC;
s->data[0].tree = NULL;
s->data[0].state = 1;
return PGS_NONE;
}
pgs_error pgs_parse_stack_append(pgs_parse_stack* s, pgs_tree* tree, long int state) {
if(s->capacity == s->size) {
pgs_parse_stack_element* new_elements = realloc(s->data, sizeof(*new_elements) * s->capacity * 2);
if(new_elements == NULL) return PGS_MALLOC;
s->capacity *= 2;
s->data = new_elements;
}
s->data[s->size].tree = tree;
s->data[s->size].state = state;
s->size++;
return PGS_NONE;
}
pgs_error pgs_parse_stack_append_terminal(pgs_parse_stack* s, pgs_token* t) {
pgs_error error;
long int state;
pgs_tree* tree = pgs_create_tree_terminal(t);
if(tree == NULL) return PGS_MALLOC;
state = parse_state_table[pgs_parse_stack_top_state(s)][t->terminal];
error = pgs_parse_stack_append(s, tree, state);
if(error) {
pgs_free_tree_terminal(tree);
return error;
}
return PGS_NONE;
}
pgs_error pgs_parse_stack_append_nonterminal(pgs_parse_stack* s, long int id, size_t count) {
size_t i;
pgs_tree** child_array;
pgs_tree* new_tree;
child_array = malloc(sizeof(*child_array) * count);
new_tree = pgs_create_tree_nonterminal(id, 0);
if(child_array == NULL || new_tree == NULL) {
free(child_array);
return PGS_MALLOC;
}
for(i = 0; i < count; i++) {
child_array[i] = s->data[s->size - count + i].tree;
}
new_tree->tree_data.nonterminal.nonterminal = id;
new_tree->tree_data.nonterminal.child_count = count;
new_tree->tree_data.nonterminal.children = child_array;
s->size -= count;
s->data[s->size].tree = new_tree;
s->data[s->size].state = parse_state_table[pgs_parse_stack_top_state(s)][id + 2 + PGS_MAX_TERMINAL];
s->size++;
return PGS_NONE;
}
void pgs_parse_stack_free(pgs_parse_stack* s) {
size_t i;
for(i = 0; i < s->size; i++) {
free(s->data[i].tree);
}
free(s->data);
}
long int pgs_parse_stack_top_state(pgs_parse_stack* s) {
return s->data[s->size - 1].state;
}
pgs_tree* pgs_parse_stack_top_tree(pgs_parse_stack* s) {
return s->data[s->size - 1].tree;
}
#define PGS_PARSE_ERROR(label_name, error_name, code, text) \
error_name = code; \
pgs_state_error(s, error_name, text); \
goto label_name;
pgs_error pgs_do_parse(pgs_state* s, pgs_token_list* list, pgs_tree** into) {
pgs_error error;
pgs_parse_stack stack;
pgs_tree* top_tree;
long int top_state;
long int tree_table_index;
long int current_token_id;
long int action;
struct pgs_item_s* item;
pgs_token* current_token;
size_t index = 0;
if((error = pgs_parse_stack_init(&stack))) return error;
while(1) {
current_token_id = pgs_token_list_at_id(list, index);
top_tree = pgs_parse_stack_top_tree(&stack);
top_state = pgs_parse_stack_top_state(&stack);
if(top_tree) {
tree_table_index = pgs_tree_table_index(top_tree);
if(tree_table_index == PGS_MAX_TERMINAL + 2) break;
}
action = parse_action_table[top_state][current_token_id];
if(action == -1) {
PGS_PARSE_ERROR(error_label, error, PGS_BAD_TOKEN, "Unexpected token at position");
} else if(action == 0) {
current_token = pgs_token_list_at(list, index);
if(index >= (list->token_count)) {
PGS_PARSE_ERROR(error_label, error, PGS_EOF_SHIFT, "Unexpected end of file");
}
error = pgs_parse_stack_append_terminal(&stack, current_token);
if(error) goto error_label;
index++;
} else {
item = &items[action - 1];
error = pgs_parse_stack_append_nonterminal(&stack, item->left_id, item->right_count);
}
}
if(index != list->token_count) {
PGS_PARSE_ERROR(error_label, error, PGS_BAD_TOKEN, "Unexpected token at position");
}
*into = stack.data[stack.size - 1].tree;
stack.size -= 1;
error_label:
pgs_parse_stack_free(&stack);
return error;
}
/* == Glue Code == */
pgs_error pgs_do_all(pgs_state* state, pgs_tree** into, const char* string) {
pgs_error error;
pgs_token_list tokens;
pgs_state_init(state);
*into = NULL;
if((error = pgs_do_lex(state, &tokens, string))) {
if(error == PGS_MALLOC) {
pgs_state_error(state, error, "Failure to allocate memory while lexing");
}
return error;
}
if((error = pgs_do_parse(state, &tokens, into))) {
if(error == PGS_MALLOC) {
pgs_state_error(state, error, "Failure to allocate memory while lexing");
}
}
pgs_token_list_free(&tokens);
return error;
}

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extern "C" {
#include "parser.h"
}
#include "parser.hpp"
#include "pattern.hpp"
namespace lily {
std::string tree_str(pgs_tree* tree, const char* source) {
size_t from = PGS_TREE_T_FROM(*tree);
size_t to = PGS_TREE_T_TO(*tree);
return std::string(source + from, to - from);
}
static ast_ptr expr_tree(pgs_tree*, const char*);
static ast_ptr expr_app_bottom(pgs_tree* base, const char* source) {
if(PGS_TREE_NT_COUNT(*base) == 2) {
return expr_tree(PGS_TREE_NT_CHILD(*base, 1), source);
} else {
pgs_tree* child = PGS_TREE_NT_CHILD(*base, 0);
if(isdigit(source[PGS_TREE_T_FROM(*child)])) {
return ast_ptr(new ast_num(atoi(source + PGS_TREE_T_FROM(*child))));
} else {
return ast_ptr(new ast_var(tree_str(child, source)));
}
}
}
static ast_ptr expr_app(pgs_tree* app, const char* source) {
ast_ptr into;
ast_ptr* into_ptr = &into;
while(PGS_TREE_NT_COUNT(*app) > 1) {
ast_app* new_app = new ast_app(nullptr, nullptr);
*into_ptr = ast_ptr(new_app);
into_ptr = &new_app->left;
new_app->right = expr_app_bottom(PGS_TREE_NT_CHILD(*app, 1), source);
app = PGS_TREE_NT_CHILD(*app, 0);
}
*into_ptr = expr_app_bottom(PGS_TREE_NT_CHILD(*app, 0), source);
return into;
}
static ast_ptr expr_mul(pgs_tree* mul, const char* source) {
if(PGS_TREE_NT_COUNT(*mul) == 1) {
return expr_app(PGS_TREE_NT_CHILD(*mul, 0), source);
} else {
pgs_tree* left = PGS_TREE_NT_CHILD(*mul, 0);
pgs_tree* right = PGS_TREE_NT_CHILD(*mul, 2);
pgs_tree* op = PGS_TREE_NT_CHILD(*mul, 1);
enum ast_op::op o =
source[PGS_TREE_T_FROM(*op)] == '*' ? ast_op::op::times : ast_op::op::divide;
ast_ptr aleft = expr_mul(left, source);
ast_ptr aright = expr_app(right, source);
return ast_ptr(new ast_op(o, std::move(aleft), std::move(aright)));
}
}
static ast_ptr expr_add(pgs_tree* add, const char* source) {
if(PGS_TREE_NT_COUNT(*add) == 1) {
return expr_mul(PGS_TREE_NT_CHILD(*add, 0), source);
} else {
pgs_tree* left = PGS_TREE_NT_CHILD(*add, 0);
pgs_tree* right = PGS_TREE_NT_CHILD(*add, 2);
pgs_tree* op = PGS_TREE_NT_CHILD(*add, 1);
enum ast_op::op o =
source[PGS_TREE_T_FROM(*op)] == '+' ? ast_op::op::add : ast_op::op::subtract;
ast_ptr aleft = expr_add(left, source);
ast_ptr aright = expr_mul(right, source);
return ast_ptr(new ast_op(o, std::move(aleft), std::move(aright)));
}
}
template <typename T, int Offset>
static ast_ptr expr_let(pgs_tree* let, const char* source) {
std::string name = tree_str(PGS_TREE_NT_CHILD(*let, Offset + 1), source);
ast_ptr eq_expr = expr_tree(PGS_TREE_NT_CHILD(*PGS_TREE_NT_CHILD(*let, Offset + 3), 1), source);
ast_ptr in_expr = expr_tree(PGS_TREE_NT_CHILD(*PGS_TREE_NT_CHILD(*let, Offset + 5), 1), source);
return ast_ptr(new T(name, std::move(eq_expr), std::move(in_expr)));
}
static pattern_ptr pattern_tree(pgs_tree* tree, const char* source) {
if(PGS_TREE_NT_COUNT(*tree) == 1) {
std::string new_str = tree_str(PGS_TREE_NT_CHILD(*tree, 0), source);
if(isupper(new_str[0])) return pattern_ptr(new pattern_cons(new_str));
else return pattern_ptr(new pattern_var(new_str));
} else {
std::string cons_name = tree_str(PGS_TREE_NT_CHILD(*tree, 0), source);
pattern_cons* new_pattern = new pattern_cons(cons_name);
pattern_ptr ptr = pattern_ptr(new_pattern);
pgs_tree* patterns = PGS_TREE_NT_CHILD(*tree, 2);
while(PGS_TREE_NT_COUNT(*patterns) > 1) {
new_pattern->vnames.push_back(tree_str(PGS_TREE_NT_CHILD(*tree, 0), source));
patterns = PGS_TREE_NT_CHILD(*tree, 2);
}
new_pattern->vnames.push_back(tree_str(PGS_TREE_NT_CHILD(*tree, 0), source));
return ptr;
}
}
static ast_case::branch expr_branch(pgs_tree* c, const char* source) {
ast_case::branch branch;
branch.pattern = pattern_tree(PGS_TREE_NT_CHILD(*c, 0), source);
branch.expr = expr_tree(PGS_TREE_NT_CHILD(*PGS_TREE_NT_CHILD(*c, 2), 1), source);
return branch;
}
static ast_ptr expr_case(pgs_tree* c, const char* source) {
ast_case* new_case = new ast_case();
ast_ptr case_ptr = ast_ptr(new_case);
new_case->of = expr_tree(PGS_TREE_NT_CHILD(*c, 1), source);
pgs_tree* branches = PGS_TREE_NT_CHILD(*c, 4);
while(PGS_TREE_NT_COUNT(*branches) == 2) {
pgs_tree* branch = PGS_TREE_NT_CHILD(*branches, 0);
branches = PGS_TREE_NT_CHILD(*branches, 1);
new_case->branches.push_back(expr_branch(branch, source));
}
new_case->branches.push_back(expr_branch(PGS_TREE_NT_CHILD(*branches, 0), source));
return case_ptr;
}
static ast_ptr expr_tree(pgs_tree* body, const char* source) {
pgs_tree* expr = PGS_TREE_NT_CHILD(*body, 0);
int type = PGS_TREE_NT(*expr);
if(type == PGS_NONTERMINAL_EXPR_ADD) {
return expr_add(expr, source);
} else if(type == PGS_NONTERMINAL_EXPR_LET) {
return expr_let<ast_let, 0>(expr, source);
} else if(type == PGS_NONTERMINAL_EXPR_LETREC) {
return expr_let<ast_letrec, 1>(expr, source);
} else if(type == PGS_NONTERMINAL_EXPR_CASE) {
return expr_case(expr, source);
}
throw error("unknown expression type");
}
static void collect_params(std::vector<std::string>& into, pgs_tree* def, const char* source) {
if(PGS_TREE_NT_COUNT(*def) == 5) {
pgs_tree* params = PGS_TREE_NT_CHILD(*def, 2);
do {
pgs_tree* param = PGS_TREE_NT_CHILD(*def, 0);
params =
(PGS_TREE_NT_COUNT(*def) == 2) ? PGS_TREE_NT_CHILD(*def, 1) : nullptr;
size_t from = PGS_TREE_T_FROM(*param);
size_t to = PGS_TREE_T_TO(*param);
std::string new_string =
std::string(source + from, to - from);
into.push_back(new_string);
} while(params);
}
}
static void add_definition(program& prog, pgs_tree* def, const char* source) {
char kw = source[PGS_TREE_T_FROM(*PGS_TREE_NT_CHILD(*def, 0))];
if(kw == 'd') {
function new_function;
collect_params(new_function.params, def, source);
new_function.body = expr_tree(PGS_TREE_NT_CHILD(*PGS_TREE_NT_CHILD(*def, PGS_TREE_NT_COUNT(*def) - 1), 1), source);
} else if(kw == 't') {
// skip for now
} else {
// skip for now
}
}
static program_ptr build_program(pgs_tree* tree, const char* source) {
program_ptr prog = std::make_unique<program>();
pgs_tree* program = PGS_TREE_NT_CHILD(*tree, 0);
do {
pgs_tree* definition = PGS_TREE_NT_CHILD(*program, 0);
program =
(PGS_TREE_NT_COUNT(*tree) == 2) ? PGS_TREE_NT_CHILD(*tree, 1) : nullptr;
add_definition(*prog, definition, source);
} while(program);
return prog;
}
program_ptr parse(std::string s) {
pgs_state state;
pgs_tree* into;
pgs_error err;
pgs_state_init(&state);
if((err = pgs_do_all(&state, &into, s.c_str())) != PGS_NONE) {
throw error("failed to parse input string");
}
program_ptr prog = build_program(into, s.c_str());
pgs_free_tree(into);
return prog;
}
}

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#include <stdlib.h>
#include <string.h>
/* == Nonterminal ID Definitions == */
#define PGS_NONTERMINAL_S 0
#define PGS_NONTERMINAL_PROGRAM 1
#define PGS_NONTERMINAL_DEFINITION 2
#define PGS_NONTERMINAL_DATA_BODY 3
#define PGS_NONTERMINAL_DATA_ELEMS 4
#define PGS_NONTERMINAL_DATA_ELEM 5
#define PGS_NONTERMINAL_DATA_ELEM_TYPES 6
#define PGS_NONTERMINAL_TYPE_BODY 7
#define PGS_NONTERMINAL_PARAMS 8
#define PGS_NONTERMINAL_DEFN_BODY 9
#define PGS_NONTERMINAL_EXPR 10
#define PGS_NONTERMINAL_EXPR_ADD 11
#define PGS_NONTERMINAL_EXPR_MUL 12
#define PGS_NONTERMINAL_EXPR_APP 13
#define PGS_NONTERMINAL_EXPR_APP_BOTTOM 14
#define PGS_NONTERMINAL_EXPR_CURLY 15
#define PGS_NONTERMINAL_EXPR_LET 16
#define PGS_NONTERMINAL_EXPR_LETREC 17
#define PGS_NONTERMINAL_EXPR_CASE 18
#define PGS_NONTERMINAL_EXPR_CASE_BRANCHES 19
#define PGS_NONTERMINAL_EXPR_CASE_BRANCH 20
#define PGS_NONTERMINAL_PATTERN 21
#define PGS_NONTERMINAL_PATTERNS 22
#define PGS_NONTERMINAL_TYPE 23
#define PGS_TREE_T(tree) ((tree).tree_data.terminal.token.terminal)
#define PGS_TREE_T_FROM(tree) ((tree).tree_data.terminal.token.from)
#define PGS_TREE_T_TO(tree) ((tree).tree_data.terminal.token.to)
#define PGS_TREE_NT(tree) ((tree).tree_data.nonterminal.nonterminal)
#define PGS_TREE_NT_COUNT(tree) ((tree).tree_data.nonterminal.child_count)
#define PGS_TREE_NT_CHILD(tree, n) ((tree).tree_data.nonterminal.children[n])
#define PGS_TREE_IS_NT(tree, type) (((tree).variant == PGS_TREE_NONTERMINAL) && (PGS_TREE_NT(tree) == (type)))
/**
* Converts a nonterminal value to a string.
* @param nt the nonterminal ID.
* @return the name for the nonterminal.
*/
const char* pgs_nonterminal_name(long int nt);
/* == Generated Data Definitions == */
/**
* A grammar item. A lot of the information collected by the parser
* generate is not carried into the source code, which leaves items
* as simply a nonterminal ID and the size of the right hand side.
*/
struct pgs_item_s {
/** The nonterminal that this item is reduced to. */
long int left_id;
/**
* The size of the item body, used to pop off
* the correct number of states from the stack.
*/
size_t right_count;
};
typedef struct pgs_item_s pgs_item;
/* == General Definitions == */
#define PGS_MAX_ERROR_LENGTH 255
/**
* The types of errors that can occur while the
* entire parsing process.
*/
enum pgs_error_e {
/** No error occured. */
PGS_NONE = 0,
/** An allocation failed. */
PGS_MALLOC,
/** A token couldn't be recognized. */
PGS_BAD_CHARACTER,
/** A tree couldn't be recognized. */
PGS_BAD_TOKEN,
/** End of file reached where it was not expected */
PGS_EOF_SHIFT
};
/**
* State used to report errors and their corresponding
* messages.
*/
struct pgs_state_s {
/** The error code. */
enum pgs_error_e error;
/** The error message. */
char errbuff[PGS_MAX_ERROR_LENGTH];
};
typedef enum pgs_error_e pgs_error;
typedef struct pgs_state_s pgs_state;
/**
* Initializes a state with no error.
* @param s the state to initialize.
*/
void pgs_state_init(pgs_state* s);
/**
* Sets the state to have an error.
* @param s the state to initialize.
* @param err the error message to return.
*/
void pgs_state_error(pgs_state* s, pgs_error err, const char* message);
/* == Lexing Definitions ==*/
/**
* A token produced by lexing.
*/
struct pgs_token_s {
/** The ID of the terminal. */
long int terminal;
/** The index at which the token starts. */
size_t from;
/** The index at which the next token begins. */
size_t to;
};
/**
* A dynamic list of tokens produced while lexing.
*/
struct pgs_token_list_s {
/** The size of the currently allocated block of tokens */
size_t capacity;
/** The number of tokens in the list. */
size_t token_count;
/** The token data array. */
struct pgs_token_s* tokens;
};
typedef struct pgs_token_s pgs_token;
typedef struct pgs_token_list_s pgs_token_list;
/**
* Initializes a token list.
* @param l the list to initialize.
* @return any errors that occured while initializing the list.
*/
pgs_error pgs_token_list_init(pgs_token_list* l);
/**
* Appends a token to the list.
* @param terminal the ID of the terminal to append.
* @param from the index at which the token begins.
* @param to the index at which the next token begins.
*/
pgs_error pgs_token_list_append(pgs_token_list* l, long int terminal, size_t from, size_t to);
/**
* Returns a token at the given index.
* @param l the list to return a token from.
* @param i the index from which to return a token.
* @return a token, or NULL if the index is out of bounds.
*/
pgs_token* pgs_token_list_at(pgs_token_list* l, size_t i);
/**
* Returns a token ID at the given index.
* @param l the list to return an ID from.
* @param i the index from which to return an ID.
* @return returns an ID, or 0, which represents EOF.
*/
pgs_error pgs_token_list_at_id(pgs_token_list* l, size_t i );
/**
* Frees a list of tokens. Since the tokens are owned by the list,
* they are invalidated after this call too.
* @param l the list to free.
*/
void pgs_token_list_free(pgs_token_list* l);
/**
* Performs a lexing operation.
* @param s the state to populate with error text, if necessary.
* @param list the list of tokens to initialize and populate.
* @param source the string to lex.
* @return the error, if any, that occured during this process.
*/
pgs_error pgs_do_lex(pgs_state* s, pgs_token_list* list, const char* source);
/* == Parsing Definitions == */
/**
* Enum that represents the variant of a parse tree,
* which is either a nonterminal with chilren, or a
* terminal with a token.
*/
enum pgs_tree_variant_e {
PGS_TREE_TERMINAL,
PGS_TREE_NONTERMINAL
};
/**
* The data of a terminal tree.
*/
struct pgs_tree_terminal_s {
/** The token this tree holds. */
pgs_token token;
};
/**
* The data of a nonterminal tree.
*/
struct pgs_tree_nonterminal_s {
/**
* The nonterminal ID.
*/
long int nonterminal;
/**
* The number of children this tree has.
*/
size_t child_count;
/**
* The array of child pointers, allocated dynamically
* depending on the item that reduced to this nonterminal.
*/
struct pgs_tree_s** children;
};
/**
* A general struct for a tree, which is either a terminal
* or a nonterminal.
*/
struct pgs_tree_s {
/** The variant of the tree. */
enum pgs_tree_variant_e variant;
union {
/** The terminal variant of this tree. */
struct pgs_tree_terminal_s terminal;
/** The nonterminal variant of this tree. */
struct pgs_tree_nonterminal_s nonterminal;
} tree_data;
};
/**
* An element on the parse stack, which holds
* both a tree node and a state. In theory,
* the stack is actually items followed by states,
* but since one always comes after the other,
* and since both need to be looked up fast,
* we put them on a stack in parallel.
*/
struct pgs_parse_stack_element_s {
/** The tree on the stack */
struct pgs_tree_s* tree;
/** The state on the stack */
long int state;
};
/**
* A parse stack. The PDA automaton
* has to maintain this stack, where it gradually
* assembles a tree.
*/
struct pgs_parse_stack_s {
/** The number of stack elements currently allocated. */
size_t capacity;
/** The current number of stack elements. */
size_t size;
/** The stack element array. */
struct pgs_parse_stack_element_s* data;
};
typedef enum pgs_tree_variant_e pgs_tree_variant;
typedef struct pgs_tree_terminal_s pgs_tree_terminal;
typedef struct pgs_tree_nontermnal_s pgs_tree_nonterminal;
typedef struct pgs_tree_s pgs_tree;
typedef struct pgs_parse_stack_element_s pgs_parse_stack_element;
typedef struct pgs_parse_stack_s pgs_parse_stack;
/**
* Allocates and initialzie a parse tree node that is a nonterminal with the given
* ID and the given child count.
* @param nonterminal the nonterminal ID of this tree.
* @param chil_count the number of chilren that this tree has.
* @return the newly allocated tree, or NULL if a malloc failure occured.
*/
pgs_tree* pgs_create_tree_nonterminal(long int nonterminal, size_t child_count);
/**
* Allocates and initialize a parse tree node that is a terminal with the given token.
* @param t the token to initialize this tree with. The token need not be valid after this call.
* @return the newly allocated tree, or NULL if a malloc failure occured.
*/
pgs_tree* pgs_create_tree_terminal(pgs_token* t);
/**
* Frees a nonterminal tree.
* @tree the tree to free.
*/
void pgs_free_tree_nonterminal(pgs_tree* tree);
/**
* Frees a terminal tree.
* @tree the tree to free.
*/
void pgs_free_tree_terminal(pgs_tree* tree);
/**
* Computes the parser_action_table index for the given tree.
* @param tree the tree for which to compute the index.
* @return the index.
*/
long int pgs_tree_table_index(pgs_tree* tree);
/**
* Frees a tree.
* @param tree the tree to free.
*/
void pgs_free_tree(pgs_tree* tree);
/**
* Initialzies a parse stack.
* @param s the parse stack to initialize.
* @return the result of the initialization.
*/
pgs_error pgs_parse_stack_init(pgs_parse_stack* s);
/**
* Appends (pushes) a new tree and state to the stack.
* @param s the stack to append to.
* @param tree the tree to append.
* @param state the state to append.
* @return the result of the append.
*/
pgs_error pgs_parse_stack_append(pgs_parse_stack* s, pgs_tree* tree, long int state);
/**
* Appends a given token to the stack, by initializing a new parse tree noe.
* @param s the stack to append to.
* @param t the token for which to construct a tree and compute a new state.
* @return the result of the append.
*/
pgs_error pgs_parse_stack_append_terminal(pgs_parse_stack* s, pgs_token* t);
/**
* Appends a given item to the stack, by popping the correct number of items
* and creating a new nonterminal tree node in their place. A new state is also
* computed from the nonterminal ID.
* @param s the stack to append to.
* @param id the nonterminal ID to create.
* @param count the number of children to pop.
* @return the result of the append.
*/
pgs_error pgs_parse_stack_append_nonterminal(pgs_parse_stack* s, long int id, size_t count);
/**
* Gets the state on the top of the stack.
* @param s the stack for which to get a state.
* @return the state on the top of the stack.
*/
long int pgs_parse_stack_top_state(pgs_parse_stack* s);
/**
* Gets the tree on the top of the stack.
* @param s the stack for which to get a tree.
* @return the tree on the top of the stack.
*/
pgs_tree* pgs_parse_stack_top_tree(pgs_parse_stack* s);
/**
* Frees a parse stack, also freeing all the trees.
* @param s the stack to free.
*/
void pgs_parse_stack_free(pgs_parse_stack* s);
/**
* Takes the given tokens, and attempts to convert them into a parse tree.
* @param s the state used for storing errors.
* @param list the list of tokens, already filled.
* @param into the tree pointer pointer into which a new tree will be stored.
* @return the error, if any, that occured.
*/
pgs_error pgs_do_parse(pgs_state* s, pgs_token_list* list, pgs_tree** into);
/* == Glue == */
/**
* Attempts to parse tokens from the given string into the given tree.
* @param state the state to initialize with error information, if necessary.
* @param into the tree to build into.
* @param string the string from which to read.
* @return the error, if any, that occured.
*/
pgs_error pgs_do_all(pgs_state* state, pgs_tree** into, const char* string);

16
src/parser.hpp Normal file
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@ -0,0 +1,16 @@
#pragma once
#include <string>
#include <map>
#include "error.hpp"
#include "ast.hpp"
#include "function.hpp"
namespace lily {
struct program {
std::map<std::string, function> functions;
};
typedef std::unique_ptr<program> program_ptr;
program_ptr parse(std::string s);
}

6
src/pattern.hpp
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@ -5,12 +5,12 @@
namespace lily { namespace lily {
struct pattern { struct pattern {
virtual ~pattern(); virtual ~pattern() = default;
}; };
typedef std::unique_ptr<pattern> pattern_ptr; typedef std::unique_ptr<pattern> pattern_ptr;
struct pattern_var { struct pattern_var : pattern {
std::string name; std::string name;
pattern_var(std::string n) : pattern_var(std::string n) :
@ -18,7 +18,7 @@ namespace lily {
~pattern_var() = default; ~pattern_var() = default;
}; };
struct pattern_cons { struct pattern_cons : pattern {
std::string name; std::string name;
std::vector<std::string> vnames; std::vector<std::string> vnames;