84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
// -*- C++ -*-
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/* Copyright © 2006-2011, Ondra Kamenik */
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%code requires
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{
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#include "location.hh"
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#define FMLA_LTYPE ogp::location_type
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}
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%code
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{
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#include "formula_parser.hh"
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#include <string>
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void fmla_error(std::string);
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int fmla_lex();
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extern ogp::FormulaParser* fparser;
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}
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%union
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{
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char* string;
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double dvalue;
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int integer;
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}
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%token EQUAL_SIGN
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%left YPLUS YMINUS
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%left YTIMES YDIVIDE
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%precedence YUMINUS YUPLUS
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%right YPOWER
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%token YEXP YLOG YSIN YCOS YTAN YSQRT YERF YERFC YDIFF
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%token <string> DNUMBER NAME
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%type <integer> expression
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%define api.prefix {fmla_}
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%locations
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%defines
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%define parse.error verbose
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%%
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root : equation_list
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| expression
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{fparser->add_formula($1);}
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;
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equation_list : equation_list equation | equation ;
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equation : expression EQUAL_SIGN expression ';'
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{fparser->add_formula(fparser->add_binary(ogp::code_t::MINUS,$1,$3));}
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| expression ';'
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{fparser->add_formula($1);}
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;
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expression : '(' expression ')' { $$ = $2;}
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| expression YPLUS expression {$$=fparser->add_binary(ogp::code_t::PLUS,$1,$3);}
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| expression YMINUS expression {$$=fparser->add_binary(ogp::code_t::MINUS,$1,$3);}
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| expression YTIMES expression {$$=fparser->add_binary(ogp::code_t::TIMES,$1,$3);}
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| expression YDIVIDE expression {$$=fparser->add_binary(ogp::code_t::DIVIDE,$1,$3);}
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| expression YPOWER expression {$$=fparser->add_binary(ogp::code_t::POWER,$1,$3);}
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| YMINUS expression %prec YUMINUS {$$=fparser->add_unary(ogp::code_t::UMINUS,$2);}
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| YPLUS expression %prec YUPLUS {$$ = $2;}
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| YSIN '(' expression ')' {$$=fparser->add_unary(ogp::code_t::SIN,$3);}
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| YCOS '(' expression ')' {$$=fparser->add_unary(ogp::code_t::COS,$3);}
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| YTAN '(' expression ')' {$$=fparser->add_unary(ogp::code_t::TAN,$3);}
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| YEXP '(' expression ')' {$$=fparser->add_unary(ogp::code_t::EXP,$3);}
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| YLOG '(' expression ')' {$$=fparser->add_unary(ogp::code_t::LOG,$3);}
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| YSQRT '(' expression ')' {$$=fparser->add_unary(ogp::code_t::SQRT,$3);}
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| YERF '(' expression ')' {$$=fparser->add_unary(ogp::code_t::ERF,$3);}
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| YERFC '(' expression ')' {$$=fparser->add_unary(ogp::code_t::ERFC,$3);}
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| YDIFF '(' expression ',' NAME ')' {$$=fparser->add_derivative($3, fparser->add_nulary($5));}
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| NAME {$$=fparser->add_nulary($1);}
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| DNUMBER {$$=fparser->add_nulary($1);}
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;
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%%
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void
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fmla_error(std::string s)
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{
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fparser->error(std::move(s));
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}
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