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655
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####################################################################
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#
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# This file was generated using Parse::Yapp version 1.05.
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#
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# Don't edit this file, use source file instead.
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#
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# ANY CHANGE MADE HERE WILL BE LOST !
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#
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####################################################################
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package Parse::Yapp::Parse;
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use vars qw ( @ISA );
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use strict;
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@ISA= qw ( Parse::Yapp::Driver );
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use Parse::Yapp::Driver;
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#line 1 "YappParse.yp"
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# (c) Copyright Francois Desarmenien 1998-2001, all rights reserved.
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# (see COPYRIGHT in Parse::Yapp.pm pod section for use and distribution rights)
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#
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# Parse/Yapp/Parser.yp: Parse::Yapp::Parser.pm source file
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#
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# Use: yapp -m 'Parse::Yapp::Parse' -o Parse/Yapp/Parse.pm YappParse.yp
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#
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# to generate the Parser module.
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#
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#line 12 "YappParse.yp"
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require 5.004;
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30 |
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use Carp;
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32 |
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33 |
my($input,$lexlevel,@lineno,$nberr,$prec,$labelno);
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34 |
my($syms,$head,$tail,$token,$term,$nterm,$rules,$precterm,$start,$nullable);
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my($expect);
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36 |
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37 |
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38 |
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sub new {
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my($class)=shift;
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ref($class)
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and $class=ref($class);
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43 |
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44 |
my($self)=$class->SUPER::new( yyversion => '1.05',
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yystates =>
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[
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47 |
{#State 0
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48 |
ACTIONS => {
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49 |
"%%" => -6,
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50 |
'HEADCODE' => 3,
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51 |
'UNION' => 2,
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52 |
'TOKEN' => 5,
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53 |
'ASSOC' => 7,
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'START' => 6,
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'error' => 9,
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'TYPE' => 10,
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"\n" => 11,
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'EXPECT' => 13
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},
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GOTOS => {
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'head' => 1,
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62 |
'decls' => 12,
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'yapp' => 4,
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'decl' => 14,
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'headsec' => 8
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}
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},
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{#State 1
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69 |
ACTIONS => {
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70 |
'error' => 19,
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71 |
"%%" => 16,
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72 |
'IDENT' => 18
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},
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GOTOS => {
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75 |
'rules' => 15,
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'rulesec' => 20,
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'body' => 17
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}
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},
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80 |
{#State 2
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81 |
ACTIONS => {
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82 |
'CODE' => 21
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}
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},
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{#State 3
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ACTIONS => {
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"\n" => 22
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}
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},
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{#State 4
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91 |
ACTIONS => {
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'' => 23
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}
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94 |
},
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{#State 5
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ACTIONS => {
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97 |
"<" => 25
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},
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DEFAULT => -19,
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100 |
GOTOS => {
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101 |
'typedecl' => 24
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}
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103 |
},
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104 |
{#State 6
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ACTIONS => {
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'IDENT' => 26
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},
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GOTOS => {
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'ident' => 27
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}
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111 |
},
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112 |
{#State 7
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113 |
ACTIONS => {
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"<" => 25
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},
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DEFAULT => -19,
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GOTOS => {
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'typedecl' => 28
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}
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},
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121 |
{#State 8
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122 |
ACTIONS => {
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"%%" => 29
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}
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},
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126 |
{#State 9
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ACTIONS => {
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"\n" => 30
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}
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},
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131 |
{#State 10
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ACTIONS => {
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133 |
"<" => 25
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},
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DEFAULT => -19,
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GOTOS => {
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'typedecl' => 31
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}
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},
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140 |
{#State 11
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DEFAULT => -10
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},
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143 |
{#State 12
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ACTIONS => {
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"%%" => -7,
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146 |
'HEADCODE' => 3,
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147 |
'UNION' => 2,
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148 |
'TOKEN' => 5,
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149 |
'ASSOC' => 7,
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150 |
'START' => 6,
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'error' => 9,
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152 |
'TYPE' => 10,
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"\n" => 11,
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'EXPECT' => 13
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},
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GOTOS => {
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'decl' => 32
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}
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},
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{#State 13
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ACTIONS => {
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'NUMBER' => 33
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}
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},
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{#State 14
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166 |
DEFAULT => -9
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},
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168 |
{#State 15
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DEFAULT => -28
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},
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171 |
{#State 16
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172 |
DEFAULT => -26
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},
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{#State 17
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ACTIONS => {
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'TAILCODE' => 34
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},
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DEFAULT => -45,
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GOTOS => {
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180 |
'tail' => 35
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}
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182 |
},
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183 |
{#State 18
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ACTIONS => {
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":" => 36
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}
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},
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188 |
{#State 19
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189 |
ACTIONS => {
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190 |
";" => 37
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191 |
}
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192 |
},
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193 |
{#State 20
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194 |
ACTIONS => {
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195 |
'error' => 19,
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196 |
"%%" => 39,
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197 |
'IDENT' => 18
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198 |
},
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199 |
GOTOS => {
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200 |
'rules' => 38
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201 |
}
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202 |
},
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203 |
{#State 21
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204 |
ACTIONS => {
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205 |
"\n" => 40
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206 |
}
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207 |
},
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208 |
{#State 22
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209 |
DEFAULT => -14
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210 |
},
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211 |
{#State 23
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212 |
DEFAULT => -0
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213 |
},
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214 |
{#State 24
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215 |
ACTIONS => {
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216 |
'LITERAL' => 41,
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217 |
'IDENT' => 26
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218 |
},
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219 |
GOTOS => {
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220 |
'symlist' => 43,
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221 |
'ident' => 44,
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222 |
'symbol' => 42
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223 |
}
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224 |
},
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225 |
{#State 25
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226 |
ACTIONS => {
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227 |
'IDENT' => 45
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228 |
}
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229 |
},
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230 |
{#State 26
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231 |
DEFAULT => -4
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232 |
},
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233 |
{#State 27
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234 |
ACTIONS => {
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235 |
"\n" => 46
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236 |
}
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237 |
},
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238 |
{#State 28
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239 |
ACTIONS => {
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240 |
'LITERAL' => 41,
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241 |
'IDENT' => 26
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242 |
},
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243 |
GOTOS => {
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244 |
'symlist' => 47,
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|
245 |
'ident' => 44,
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|
246 |
'symbol' => 42
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247 |
}
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|
248 |
},
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249 |
{#State 29
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250 |
DEFAULT => -5
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251 |
},
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252 |
{#State 30
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253 |
DEFAULT => -18
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254 |
},
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255 |
{#State 31
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256 |
ACTIONS => {
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|
257 |
'IDENT' => 26
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258 |
},
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259 |
GOTOS => {
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260 |
'ident' => 48,
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261 |
'identlist' => 49
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262 |
}
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263 |
},
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264 |
{#State 32
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265 |
DEFAULT => -8
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266 |
},
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267 |
{#State 33
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268 |
ACTIONS => {
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269 |
"\n" => 50
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270 |
}
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271 |
},
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272 |
{#State 34
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273 |
DEFAULT => -46
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274 |
},
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275 |
{#State 35
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276 |
DEFAULT => -1
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277 |
},
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278 |
{#State 36
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279 |
ACTIONS => {
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280 |
'CODE' => 57,
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281 |
'LITERAL' => 41,
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282 |
'IDENT' => 26
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283 |
},
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284 |
DEFAULT => -35,
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285 |
GOTOS => {
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286 |
'rhselts' => 56,
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287 |
'rule' => 51,
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288 |
'code' => 52,
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289 |
'rhs' => 53,
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290 |
'ident' => 44,
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291 |
'rhselt' => 58,
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292 |
'rhss' => 55,
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293 |
'symbol' => 54
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294 |
}
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295 |
},
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296 |
{#State 37
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297 |
DEFAULT => -30
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|
298 |
},
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299 |
{#State 38
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300 |
DEFAULT => -27
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301 |
},
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302 |
{#State 39
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303 |
DEFAULT => -25
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|
304 |
},
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305 |
{#State 40
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306 |
DEFAULT => -15
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|
307 |
},
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308 |
{#State 41
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309 |
DEFAULT => -2
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|
310 |
},
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311 |
{#State 42
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312 |
DEFAULT => -22
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313 |
},
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314 |
{#State 43
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315 |
ACTIONS => {
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316 |
"\n" => 60,
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317 |
'LITERAL' => 41,
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318 |
'IDENT' => 26
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|
319 |
},
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320 |
GOTOS => {
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321 |
'ident' => 44,
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|
322 |
'symbol' => 59
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323 |
}
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|
324 |
},
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325 |
{#State 44
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326 |
DEFAULT => -3
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|
327 |
},
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328 |
{#State 45
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329 |
ACTIONS => {
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330 |
">" => 61
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331 |
}
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|
332 |
},
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333 |
{#State 46
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334 |
DEFAULT => -13
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|
335 |
},
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|
336 |
{#State 47
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|
337 |
ACTIONS => {
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|
338 |
"\n" => 62,
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|
339 |
'LITERAL' => 41,
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|
340 |
'IDENT' => 26
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|
341 |
},
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|
342 |
GOTOS => {
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|
343 |
'ident' => 44,
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|
344 |
'symbol' => 59
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|
345 |
}
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|
346 |
},
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|
347 |
{#State 48
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|
348 |
DEFAULT => -24
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|
349 |
},
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|
350 |
{#State 49
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|
|
351 |
ACTIONS => {
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|
352 |
"\n" => 63,
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|
353 |
'IDENT' => 26
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|
354 |
},
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|
|
355 |
GOTOS => {
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|
|
356 |
'ident' => 64
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|
|
357 |
}
|
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|
358 |
},
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|
359 |
{#State 50
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|
360 |
DEFAULT => -17
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|
|
361 |
},
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|
362 |
{#State 51
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|
363 |
DEFAULT => -32
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|
|
364 |
},
|
|
|
365 |
{#State 52
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|
|
366 |
DEFAULT => -40
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|
|
367 |
},
|
|
|
368 |
{#State 53
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|
|
369 |
ACTIONS => {
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|
370 |
'PREC' => 66
|
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|
371 |
},
|
|
|
372 |
DEFAULT => -34,
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|
|
373 |
GOTOS => {
|
|
|
374 |
'prec' => 65
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|
|
375 |
}
|
|
|
376 |
},
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|
|
377 |
{#State 54
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|
|
378 |
DEFAULT => -39
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|
|
379 |
},
|
|
|
380 |
{#State 55
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|
|
381 |
ACTIONS => {
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|
382 |
"|" => 68,
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|
383 |
";" => 67
|
|
|
384 |
}
|
|
|
385 |
},
|
|
|
386 |
{#State 56
|
|
|
387 |
ACTIONS => {
|
|
|
388 |
'CODE' => 57,
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|
|
389 |
'LITERAL' => 41,
|
|
|
390 |
'IDENT' => 26
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|
|
391 |
},
|
|
|
392 |
DEFAULT => -36,
|
|
|
393 |
GOTOS => {
|
|
|
394 |
'code' => 52,
|
|
|
395 |
'ident' => 44,
|
|
|
396 |
'rhselt' => 69,
|
|
|
397 |
'symbol' => 54
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|
|
398 |
}
|
|
|
399 |
},
|
|
|
400 |
{#State 57
|
|
|
401 |
DEFAULT => -44
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|
|
402 |
},
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|
|
403 |
{#State 58
|
|
|
404 |
DEFAULT => -38
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|
|
405 |
},
|
|
|
406 |
{#State 59
|
|
|
407 |
DEFAULT => -21
|
|
|
408 |
},
|
|
|
409 |
{#State 60
|
|
|
410 |
DEFAULT => -11
|
|
|
411 |
},
|
|
|
412 |
{#State 61
|
|
|
413 |
DEFAULT => -20
|
|
|
414 |
},
|
|
|
415 |
{#State 62
|
|
|
416 |
DEFAULT => -12
|
|
|
417 |
},
|
|
|
418 |
{#State 63
|
|
|
419 |
DEFAULT => -16
|
|
|
420 |
},
|
|
|
421 |
{#State 64
|
|
|
422 |
DEFAULT => -23
|
|
|
423 |
},
|
|
|
424 |
{#State 65
|
|
|
425 |
ACTIONS => {
|
|
|
426 |
'CODE' => 57
|
|
|
427 |
},
|
|
|
428 |
DEFAULT => -42,
|
|
|
429 |
GOTOS => {
|
|
|
430 |
'code' => 70,
|
|
|
431 |
'epscode' => 71
|
|
|
432 |
}
|
|
|
433 |
},
|
|
|
434 |
{#State 66
|
|
|
435 |
ACTIONS => {
|
|
|
436 |
'LITERAL' => 41,
|
|
|
437 |
'IDENT' => 26
|
|
|
438 |
},
|
|
|
439 |
GOTOS => {
|
|
|
440 |
'ident' => 44,
|
|
|
441 |
'symbol' => 72
|
|
|
442 |
}
|
|
|
443 |
},
|
|
|
444 |
{#State 67
|
|
|
445 |
DEFAULT => -29
|
|
|
446 |
},
|
|
|
447 |
{#State 68
|
|
|
448 |
ACTIONS => {
|
|
|
449 |
'CODE' => 57,
|
|
|
450 |
'LITERAL' => 41,
|
|
|
451 |
'IDENT' => 26
|
|
|
452 |
},
|
|
|
453 |
DEFAULT => -35,
|
|
|
454 |
GOTOS => {
|
|
|
455 |
'rhselts' => 56,
|
|
|
456 |
'rule' => 73,
|
|
|
457 |
'code' => 52,
|
|
|
458 |
'rhs' => 53,
|
|
|
459 |
'ident' => 44,
|
|
|
460 |
'rhselt' => 58,
|
|
|
461 |
'symbol' => 54
|
|
|
462 |
}
|
|
|
463 |
},
|
|
|
464 |
{#State 69
|
|
|
465 |
DEFAULT => -37
|
|
|
466 |
},
|
|
|
467 |
{#State 70
|
|
|
468 |
DEFAULT => -43
|
|
|
469 |
},
|
|
|
470 |
{#State 71
|
|
|
471 |
DEFAULT => -33
|
|
|
472 |
},
|
|
|
473 |
{#State 72
|
|
|
474 |
DEFAULT => -41
|
|
|
475 |
},
|
|
|
476 |
{#State 73
|
|
|
477 |
DEFAULT => -31
|
|
|
478 |
}
|
|
|
479 |
],
|
|
|
480 |
yyrules =>
|
|
|
481 |
[
|
|
|
482 |
[#Rule 0
|
|
|
483 |
'$start', 2, undef
|
|
|
484 |
],
|
|
|
485 |
[#Rule 1
|
|
|
486 |
'yapp', 3, undef
|
|
|
487 |
],
|
|
|
488 |
[#Rule 2
|
|
|
489 |
'symbol', 1,
|
|
|
490 |
sub
|
|
|
491 |
#line 30 "YappParse.yp"
|
|
|
492 |
{
|
|
|
493 |
exists($$syms{$_[1][0]})
|
|
|
494 |
or do {
|
|
|
495 |
$$syms{$_[1][0]} = $_[1][1];
|
|
|
496 |
$$term{$_[1][0]} = undef;
|
|
|
497 |
};
|
|
|
498 |
$_[1]
|
|
|
499 |
}
|
|
|
500 |
],
|
|
|
501 |
[#Rule 3
|
|
|
502 |
'symbol', 1, undef
|
|
|
503 |
],
|
|
|
504 |
[#Rule 4
|
|
|
505 |
'ident', 1,
|
|
|
506 |
sub
|
|
|
507 |
#line 41 "YappParse.yp"
|
|
|
508 |
{
|
|
|
509 |
exists($$syms{$_[1][0]})
|
|
|
510 |
or do {
|
|
|
511 |
$$syms{$_[1][0]} = $_[1][1];
|
|
|
512 |
$$term{$_[1][0]} = undef;
|
|
|
513 |
};
|
|
|
514 |
$_[1]
|
|
|
515 |
}
|
|
|
516 |
],
|
|
|
517 |
[#Rule 5
|
|
|
518 |
'head', 2, undef
|
|
|
519 |
],
|
|
|
520 |
[#Rule 6
|
|
|
521 |
'headsec', 0, undef
|
|
|
522 |
],
|
|
|
523 |
[#Rule 7
|
|
|
524 |
'headsec', 1, undef
|
|
|
525 |
],
|
|
|
526 |
[#Rule 8
|
|
|
527 |
'decls', 2, undef
|
|
|
528 |
],
|
|
|
529 |
[#Rule 9
|
|
|
530 |
'decls', 1, undef
|
|
|
531 |
],
|
|
|
532 |
[#Rule 10
|
|
|
533 |
'decl', 1, undef
|
|
|
534 |
],
|
|
|
535 |
[#Rule 11
|
|
|
536 |
'decl', 4,
|
|
|
537 |
sub
|
|
|
538 |
#line 66 "YappParse.yp"
|
|
|
539 |
{
|
|
|
540 |
for (@{$_[3]}) {
|
|
|
541 |
my($symbol,$lineno)=@$_;
|
|
|
542 |
|
|
|
543 |
exists($$token{$symbol})
|
|
|
544 |
and do {
|
|
|
545 |
_SyntaxError(0,
|
|
|
546 |
"Token $symbol redefined: ".
|
|
|
547 |
"Previously defined line $$syms{$symbol}",
|
|
|
548 |
$lineno);
|
|
|
549 |
next;
|
|
|
550 |
};
|
|
|
551 |
$$token{$symbol}=$lineno;
|
|
|
552 |
$$term{$symbol} = [ ];
|
|
|
553 |
}
|
|
|
554 |
undef
|
|
|
555 |
}
|
|
|
556 |
],
|
|
|
557 |
[#Rule 12
|
|
|
558 |
'decl', 4,
|
|
|
559 |
sub
|
|
|
560 |
#line 84 "YappParse.yp"
|
|
|
561 |
{
|
|
|
562 |
for (@{$_[3]}) {
|
|
|
563 |
my($symbol,$lineno)=@$_;
|
|
|
564 |
|
|
|
565 |
defined($$term{$symbol}[0])
|
|
|
566 |
and do {
|
|
|
567 |
_SyntaxError(1,
|
|
|
568 |
"Precedence for symbol $symbol redefined: ".
|
|
|
569 |
"Previously defined line $$syms{$symbol}",
|
|
|
570 |
$lineno);
|
|
|
571 |
next;
|
|
|
572 |
};
|
|
|
573 |
$$token{$symbol}=$lineno;
|
|
|
574 |
$$term{$symbol} = [ $_[1][0], $prec ];
|
|
|
575 |
}
|
|
|
576 |
++$prec;
|
|
|
577 |
undef
|
|
|
578 |
}
|
|
|
579 |
],
|
|
|
580 |
[#Rule 13
|
|
|
581 |
'decl', 3,
|
|
|
582 |
sub
|
|
|
583 |
#line 102 "YappParse.yp"
|
|
|
584 |
{ $start=$_[2][0]; undef }
|
|
|
585 |
],
|
|
|
586 |
[#Rule 14
|
|
|
587 |
'decl', 2,
|
|
|
588 |
sub
|
|
|
589 |
#line 103 "YappParse.yp"
|
|
|
590 |
{ push(@$head,$_[1]); undef }
|
|
|
591 |
],
|
|
|
592 |
[#Rule 15
|
|
|
593 |
'decl', 3,
|
|
|
594 |
sub
|
|
|
595 |
#line 104 "YappParse.yp"
|
|
|
596 |
{ undef }
|
|
|
597 |
],
|
|
|
598 |
[#Rule 16
|
|
|
599 |
'decl', 4,
|
|
|
600 |
sub
|
|
|
601 |
#line 106 "YappParse.yp"
|
|
|
602 |
{
|
|
|
603 |
for ( @{$_[3]} ) {
|
|
|
604 |
my($symbol,$lineno)=@$_;
|
|
|
605 |
|
|
|
606 |
exists($$nterm{$symbol})
|
|
|
607 |
and do {
|
|
|
608 |
_SyntaxError(0,
|
|
|
609 |
"Non-terminal $symbol redefined: ".
|
|
|
610 |
"Previously defined line $$syms{$symbol}",
|
|
|
611 |
$lineno);
|
|
|
612 |
next;
|
|
|
613 |
};
|
|
|
614 |
delete($$term{$symbol}); #not a terminal
|
|
|
615 |
$$nterm{$symbol}=undef; #is a non-terminal
|
|
|
616 |
}
|
|
|
617 |
}
|
|
|
618 |
],
|
|
|
619 |
[#Rule 17
|
|
|
620 |
'decl', 3,
|
|
|
621 |
sub
|
|
|
622 |
#line 122 "YappParse.yp"
|
|
|
623 |
{ $expect=$_[2][0]; undef }
|
|
|
624 |
],
|
|
|
625 |
[#Rule 18
|
|
|
626 |
'decl', 2,
|
|
|
627 |
sub
|
|
|
628 |
#line 123 "YappParse.yp"
|
|
|
629 |
{ $_[0]->YYErrok }
|
|
|
630 |
],
|
|
|
631 |
[#Rule 19
|
|
|
632 |
'typedecl', 0, undef
|
|
|
633 |
],
|
|
|
634 |
[#Rule 20
|
|
|
635 |
'typedecl', 3, undef
|
|
|
636 |
],
|
|
|
637 |
[#Rule 21
|
|
|
638 |
'symlist', 2,
|
|
|
639 |
sub
|
|
|
640 |
#line 130 "YappParse.yp"
|
|
|
641 |
{ push(@{$_[1]},$_[2]); $_[1] }
|
|
|
642 |
],
|
|
|
643 |
[#Rule 22
|
|
|
644 |
'symlist', 1,
|
|
|
645 |
sub
|
|
|
646 |
#line 131 "YappParse.yp"
|
|
|
647 |
{ [ $_[1] ] }
|
|
|
648 |
],
|
|
|
649 |
[#Rule 23
|
|
|
650 |
'identlist', 2,
|
|
|
651 |
sub
|
|
|
652 |
#line 134 "YappParse.yp"
|
|
|
653 |
{ push(@{$_[1]},$_[2]); $_[1] }
|
|
|
654 |
],
|
|
|
655 |
[#Rule 24
|
|
|
656 |
'identlist', 1,
|
|
|
657 |
sub
|
|
|
658 |
#line 135 "YappParse.yp"
|
|
|
659 |
{ [ $_[1] ] }
|
|
|
660 |
],
|
|
|
661 |
[#Rule 25
|
|
|
662 |
'body', 2,
|
|
|
663 |
sub
|
|
|
664 |
#line 140 "YappParse.yp"
|
|
|
665 |
{
|
|
|
666 |
$start
|
|
|
667 |
or $start=$$rules[1][0];
|
|
|
668 |
|
|
|
669 |
ref($$nterm{$start})
|
|
|
670 |
or _SyntaxError(2,"Start symbol $start not found ".
|
|
|
671 |
"in rules section",$_[2][1]);
|
|
|
672 |
|
|
|
673 |
$$rules[0]=[ '$start', [ $start, chr(0) ], undef, undef ];
|
|
|
674 |
}
|
|
|
675 |
],
|
|
|
676 |
[#Rule 26
|
|
|
677 |
'body', 1,
|
|
|
678 |
sub
|
|
|
679 |
#line 150 "YappParse.yp"
|
|
|
680 |
{ _SyntaxError(2,"No rules in input grammar",$_[1][1]); }
|
|
|
681 |
],
|
|
|
682 |
[#Rule 27
|
|
|
683 |
'rulesec', 2, undef
|
|
|
684 |
],
|
|
|
685 |
[#Rule 28
|
|
|
686 |
'rulesec', 1, undef
|
|
|
687 |
],
|
|
|
688 |
[#Rule 29
|
|
|
689 |
'rules', 4,
|
|
|
690 |
sub
|
|
|
691 |
#line 157 "YappParse.yp"
|
|
|
692 |
{ _AddRules($_[1],$_[3]); undef }
|
|
|
693 |
],
|
|
|
694 |
[#Rule 30
|
|
|
695 |
'rules', 2,
|
|
|
696 |
sub
|
|
|
697 |
#line 158 "YappParse.yp"
|
|
|
698 |
{ $_[0]->YYErrok }
|
|
|
699 |
],
|
|
|
700 |
[#Rule 31
|
|
|
701 |
'rhss', 3,
|
|
|
702 |
sub
|
|
|
703 |
#line 161 "YappParse.yp"
|
|
|
704 |
{ push(@{$_[1]},$_[3]); $_[1] }
|
|
|
705 |
],
|
|
|
706 |
[#Rule 32
|
|
|
707 |
'rhss', 1,
|
|
|
708 |
sub
|
|
|
709 |
#line 162 "YappParse.yp"
|
|
|
710 |
{ [ $_[1] ] }
|
|
|
711 |
],
|
|
|
712 |
[#Rule 33
|
|
|
713 |
'rule', 3,
|
|
|
714 |
sub
|
|
|
715 |
#line 165 "YappParse.yp"
|
|
|
716 |
{ push(@{$_[1]}, $_[2], $_[3]); $_[1] }
|
|
|
717 |
],
|
|
|
718 |
[#Rule 34
|
|
|
719 |
'rule', 1,
|
|
|
720 |
sub
|
|
|
721 |
#line 166 "YappParse.yp"
|
|
|
722 |
{
|
|
|
723 |
my($code)=undef;
|
|
|
724 |
|
|
|
725 |
defined($_[1])
|
|
|
726 |
and $_[1][-1][0] eq 'CODE'
|
|
|
727 |
and $code = ${pop(@{$_[1]})}[1];
|
|
|
728 |
|
|
|
729 |
push(@{$_[1]}, undef, $code);
|
|
|
730 |
|
|
|
731 |
$_[1]
|
|
|
732 |
}
|
|
|
733 |
],
|
|
|
734 |
[#Rule 35
|
|
|
735 |
'rhs', 0, undef
|
|
|
736 |
],
|
|
|
737 |
[#Rule 36
|
|
|
738 |
'rhs', 1, undef
|
|
|
739 |
],
|
|
|
740 |
[#Rule 37
|
|
|
741 |
'rhselts', 2,
|
|
|
742 |
sub
|
|
|
743 |
#line 183 "YappParse.yp"
|
|
|
744 |
{ push(@{$_[1]},$_[2]); $_[1] }
|
|
|
745 |
],
|
|
|
746 |
[#Rule 38
|
|
|
747 |
'rhselts', 1,
|
|
|
748 |
sub
|
|
|
749 |
#line 184 "YappParse.yp"
|
|
|
750 |
{ [ $_[1] ] }
|
|
|
751 |
],
|
|
|
752 |
[#Rule 39
|
|
|
753 |
'rhselt', 1,
|
|
|
754 |
sub
|
|
|
755 |
#line 187 "YappParse.yp"
|
|
|
756 |
{ [ 'SYMB', $_[1] ] }
|
|
|
757 |
],
|
|
|
758 |
[#Rule 40
|
|
|
759 |
'rhselt', 1,
|
|
|
760 |
sub
|
|
|
761 |
#line 188 "YappParse.yp"
|
|
|
762 |
{ [ 'CODE', $_[1] ] }
|
|
|
763 |
],
|
|
|
764 |
[#Rule 41
|
|
|
765 |
'prec', 2,
|
|
|
766 |
sub
|
|
|
767 |
#line 192 "YappParse.yp"
|
|
|
768 |
{
|
|
|
769 |
defined($$term{$_[2][0]})
|
|
|
770 |
or do {
|
|
|
771 |
_SyntaxError(1,"No precedence for symbol $_[2][0]",
|
|
|
772 |
$_[2][1]);
|
|
|
773 |
return undef;
|
|
|
774 |
};
|
|
|
775 |
|
|
|
776 |
++$$precterm{$_[2][0]};
|
|
|
777 |
$$term{$_[2][0]}[1];
|
|
|
778 |
}
|
|
|
779 |
],
|
|
|
780 |
[#Rule 42
|
|
|
781 |
'epscode', 0,
|
|
|
782 |
sub
|
|
|
783 |
#line 205 "YappParse.yp"
|
|
|
784 |
{ undef }
|
|
|
785 |
],
|
|
|
786 |
[#Rule 43
|
|
|
787 |
'epscode', 1,
|
|
|
788 |
sub
|
|
|
789 |
#line 206 "YappParse.yp"
|
|
|
790 |
{ $_[1] }
|
|
|
791 |
],
|
|
|
792 |
[#Rule 44
|
|
|
793 |
'code', 1,
|
|
|
794 |
sub
|
|
|
795 |
#line 209 "YappParse.yp"
|
|
|
796 |
{ $_[1] }
|
|
|
797 |
],
|
|
|
798 |
[#Rule 45
|
|
|
799 |
'tail', 0, undef
|
|
|
800 |
],
|
|
|
801 |
[#Rule 46
|
|
|
802 |
'tail', 1,
|
|
|
803 |
sub
|
|
|
804 |
#line 215 "YappParse.yp"
|
|
|
805 |
{ $tail=$_[1] }
|
|
|
806 |
]
|
|
|
807 |
],
|
|
|
808 |
@_);
|
|
|
809 |
bless($self,$class);
|
|
|
810 |
}
|
|
|
811 |
|
|
|
812 |
#line 218 "YappParse.yp"
|
|
|
813 |
|
|
|
814 |
sub _Error {
|
|
|
815 |
my($value)=$_[0]->YYCurval;
|
|
|
816 |
|
|
|
817 |
my($what)= $token ? "input: '$$value[0]'" : "end of input";
|
|
|
818 |
|
|
|
819 |
_SyntaxError(1,"Unexpected $what",$$value[1]);
|
|
|
820 |
}
|
|
|
821 |
|
|
|
822 |
sub _Lexer {
|
|
|
823 |
|
|
|
824 |
#At EOF
|
|
|
825 |
pos($$input) >= length($$input)
|
|
|
826 |
and return('',[ undef, -1 ]);
|
|
|
827 |
|
|
|
828 |
#In TAIL section
|
|
|
829 |
$lexlevel > 1
|
|
|
830 |
and do {
|
|
|
831 |
my($pos)=pos($$input);
|
|
|
832 |
|
|
|
833 |
$lineno[0]=$lineno[1];
|
|
|
834 |
$lineno[1]=-1;
|
|
|
835 |
pos($$input)=length($$input);
|
|
|
836 |
return('TAILCODE',[ substr($$input,$pos), $lineno[0] ]);
|
|
|
837 |
};
|
|
|
838 |
|
|
|
839 |
#Skip blanks
|
|
|
840 |
$lexlevel == 0
|
|
|
841 |
? $$input=~m{\G((?:
|
|
|
842 |
[\t\ ]+ # Any white space char but \n
|
|
|
843 |
| \#[^\n]* # Perl like comments
|
|
|
844 |
| /\*.*?\*/ # C like comments
|
|
|
845 |
)+)}xsgc
|
|
|
846 |
: $$input=~m{\G((?:
|
|
|
847 |
\s+ # any white space char
|
|
|
848 |
| \#[^\n]* # Perl like comments
|
|
|
849 |
| /\*.*?\*/ # C like comments
|
|
|
850 |
)+)}xsgc
|
|
|
851 |
and do {
|
|
|
852 |
my($blanks)=$1;
|
|
|
853 |
|
|
|
854 |
#Maybe At EOF
|
|
|
855 |
pos($$input) >= length($$input)
|
|
|
856 |
and return('',[ undef, -1 ]);
|
|
|
857 |
|
|
|
858 |
$lineno[1]+= $blanks=~tr/\n//;
|
|
|
859 |
};
|
|
|
860 |
|
|
|
861 |
$lineno[0]=$lineno[1];
|
|
|
862 |
|
|
|
863 |
$$input=~/\G([A-Za-z_][A-Za-z0-9_]*)/gc
|
|
|
864 |
and return('IDENT',[ $1, $lineno[0] ]);
|
|
|
865 |
|
|
|
866 |
$$input=~/\G('(?:[^'\\]|\\\\|\\'|\\)+?')/gc
|
|
|
867 |
and do {
|
|
|
868 |
$1 eq "'error'"
|
|
|
869 |
and do {
|
|
|
870 |
_SyntaxError(0,"Literal 'error' ".
|
|
|
871 |
"will be treated as error token",$lineno[0]);
|
|
|
872 |
return('IDENT',[ 'error', $lineno[0] ]);
|
|
|
873 |
};
|
|
|
874 |
return('LITERAL',[ $1, $lineno[0] ]);
|
|
|
875 |
};
|
|
|
876 |
|
|
|
877 |
$$input=~/\G(%%)/gc
|
|
|
878 |
and do {
|
|
|
879 |
++$lexlevel;
|
|
|
880 |
return($1, [ $1, $lineno[0] ]);
|
|
|
881 |
};
|
|
|
882 |
|
|
|
883 |
$$input=~/\G{/gc
|
|
|
884 |
and do {
|
|
|
885 |
my($level,$from,$code);
|
|
|
886 |
|
|
|
887 |
$from=pos($$input);
|
|
|
888 |
|
|
|
889 |
$level=1;
|
|
|
890 |
while($$input=~/([{}])/gc) {
|
|
|
891 |
substr($$input,pos($$input)-1,1) eq '\\' #Quoted
|
|
|
892 |
and next;
|
|
|
893 |
$level += ($1 eq '{' ? 1 : -1)
|
|
|
894 |
or last;
|
|
|
895 |
}
|
|
|
896 |
$level
|
|
|
897 |
and _SyntaxError(2,"Unmatched { opened line $lineno[0]",-1);
|
|
|
898 |
$code = substr($$input,$from,pos($$input)-$from-1);
|
|
|
899 |
$lineno[1]+= $code=~tr/\n//;
|
|
|
900 |
return('CODE',[ $code, $lineno[0] ]);
|
|
|
901 |
};
|
|
|
902 |
|
|
|
903 |
if($lexlevel == 0) {# In head section
|
|
|
904 |
$$input=~/\G%(left|right|nonassoc)/gc
|
|
|
905 |
and return('ASSOC',[ uc($1), $lineno[0] ]);
|
|
|
906 |
$$input=~/\G%(start)/gc
|
|
|
907 |
and return('START',[ undef, $lineno[0] ]);
|
|
|
908 |
$$input=~/\G%(expect)/gc
|
|
|
909 |
and return('EXPECT',[ undef, $lineno[0] ]);
|
|
|
910 |
$$input=~/\G%{/gc
|
|
|
911 |
and do {
|
|
|
912 |
my($code);
|
|
|
913 |
|
|
|
914 |
$$input=~/\G(.*?)%}/sgc
|
|
|
915 |
or _SyntaxError(2,"Unmatched %{ opened line $lineno[0]",-1);
|
|
|
916 |
|
|
|
917 |
$code=$1;
|
|
|
918 |
$lineno[1]+= $code=~tr/\n//;
|
|
|
919 |
return('HEADCODE',[ $code, $lineno[0] ]);
|
|
|
920 |
};
|
|
|
921 |
$$input=~/\G%(token)/gc
|
|
|
922 |
and return('TOKEN',[ undef, $lineno[0] ]);
|
|
|
923 |
$$input=~/\G%(type)/gc
|
|
|
924 |
and return('TYPE',[ undef, $lineno[0] ]);
|
|
|
925 |
$$input=~/\G%(union)/gc
|
|
|
926 |
and return('UNION',[ undef, $lineno[0] ]);
|
|
|
927 |
$$input=~/\G([0-9]+)/gc
|
|
|
928 |
and return('NUMBER',[ $1, $lineno[0] ]);
|
|
|
929 |
|
|
|
930 |
}
|
|
|
931 |
else {# In rule section
|
|
|
932 |
$$input=~/\G%(prec)/gc
|
|
|
933 |
and return('PREC',[ undef, $lineno[0] ]);
|
|
|
934 |
}
|
|
|
935 |
|
|
|
936 |
#Always return something
|
|
|
937 |
$$input=~/\G(.)/sg
|
|
|
938 |
or die "Parse::Yapp::Grammar::Parse: Match (.) failed: report as a BUG";
|
|
|
939 |
|
|
|
940 |
$1 eq "\n"
|
|
|
941 |
and ++$lineno[1];
|
|
|
942 |
|
|
|
943 |
( $1 ,[ $1, $lineno[0] ]);
|
|
|
944 |
|
|
|
945 |
}
|
|
|
946 |
|
|
|
947 |
sub _SyntaxError {
|
|
|
948 |
my($level,$message,$lineno)=@_;
|
|
|
949 |
|
|
|
950 |
$message= "*".
|
|
|
951 |
[ 'Warning', 'Error', 'Fatal' ]->[$level].
|
|
|
952 |
"* $message, at ".
|
|
|
953 |
($lineno < 0 ? "eof" : "line $lineno").
|
|
|
954 |
".\n";
|
|
|
955 |
|
|
|
956 |
$level > 1
|
|
|
957 |
and die $message;
|
|
|
958 |
|
|
|
959 |
warn $message;
|
|
|
960 |
|
|
|
961 |
$level > 0
|
|
|
962 |
and ++$nberr;
|
|
|
963 |
|
|
|
964 |
$nberr == 20
|
|
|
965 |
and die "*Fatal* Too many errors detected.\n"
|
|
|
966 |
}
|
|
|
967 |
|
|
|
968 |
sub _AddRules {
|
|
|
969 |
my($lhs,$lineno)=@{$_[0]};
|
|
|
970 |
my($rhss)=$_[1];
|
|
|
971 |
|
|
|
972 |
ref($$nterm{$lhs})
|
|
|
973 |
and do {
|
|
|
974 |
_SyntaxError(1,"Non-terminal $lhs redefined: ".
|
|
|
975 |
"Previously declared line $$syms{$lhs}",$lineno);
|
|
|
976 |
return;
|
|
|
977 |
};
|
|
|
978 |
|
|
|
979 |
ref($$term{$lhs})
|
|
|
980 |
and do {
|
|
|
981 |
my($where) = exists($$token{$lhs}) ? $$token{$lhs} : $$syms{$lhs};
|
|
|
982 |
_SyntaxError(1,"Non-terminal $lhs previously ".
|
|
|
983 |
"declared as token line $where",$lineno);
|
|
|
984 |
return;
|
|
|
985 |
};
|
|
|
986 |
|
|
|
987 |
ref($$nterm{$lhs}) #declared through %type
|
|
|
988 |
or do {
|
|
|
989 |
$$syms{$lhs}=$lineno; #Say it's declared here
|
|
|
990 |
delete($$term{$lhs}); #No more a terminal
|
|
|
991 |
};
|
|
|
992 |
$$nterm{$lhs}=[]; #It's a non-terminal now
|
|
|
993 |
|
|
|
994 |
my($epsrules)=0; #To issue a warning if more than one epsilon rule
|
|
|
995 |
|
|
|
996 |
for my $rhs (@$rhss) {
|
|
|
997 |
my($tmprule)=[ $lhs, [ ], splice(@$rhs,-2) ]; #Init rule
|
|
|
998 |
|
|
|
999 |
@$rhs
|
|
|
1000 |
or do {
|
|
|
1001 |
++$$nullable{$lhs};
|
|
|
1002 |
++$epsrules;
|
|
|
1003 |
};
|
|
|
1004 |
|
|
|
1005 |
for (0..$#$rhs) {
|
|
|
1006 |
my($what,$value)=@{$$rhs[$_]};
|
|
|
1007 |
|
|
|
1008 |
$what eq 'CODE'
|
|
|
1009 |
and do {
|
|
|
1010 |
my($name)='@'.++$labelno."-$_";
|
|
|
1011 |
push(@$rules,[ $name, [], undef, $value ]);
|
|
|
1012 |
push(@{$$tmprule[1]},$name);
|
|
|
1013 |
next;
|
|
|
1014 |
};
|
|
|
1015 |
push(@{$$tmprule[1]},$$value[0]);
|
|
|
1016 |
}
|
|
|
1017 |
push(@$rules,$tmprule);
|
|
|
1018 |
push(@{$$nterm{$lhs}},$#$rules);
|
|
|
1019 |
}
|
|
|
1020 |
|
|
|
1021 |
$epsrules > 1
|
|
|
1022 |
and _SyntaxError(0,"More than one empty rule for symbol $lhs",$lineno);
|
|
|
1023 |
}
|
|
|
1024 |
|
|
|
1025 |
sub Parse {
|
|
|
1026 |
my($self)=shift;
|
|
|
1027 |
|
|
|
1028 |
@_ > 0
|
|
|
1029 |
or croak("No input grammar\n");
|
|
|
1030 |
|
|
|
1031 |
my($parsed)={};
|
|
|
1032 |
|
|
|
1033 |
$input=\$_[0];
|
|
|
1034 |
|
|
|
1035 |
$lexlevel=0;
|
|
|
1036 |
@lineno=(1,1);
|
|
|
1037 |
$nberr=0;
|
|
|
1038 |
$prec=0;
|
|
|
1039 |
$labelno=0;
|
|
|
1040 |
|
|
|
1041 |
$head=();
|
|
|
1042 |
$tail="";
|
|
|
1043 |
|
|
|
1044 |
$syms={};
|
|
|
1045 |
$token={};
|
|
|
1046 |
$term={};
|
|
|
1047 |
$nterm={};
|
|
|
1048 |
$rules=[ undef ]; #reserve slot 0 for start rule
|
|
|
1049 |
$precterm={};
|
|
|
1050 |
|
|
|
1051 |
$start="";
|
|
|
1052 |
$nullable={};
|
|
|
1053 |
$expect=0;
|
|
|
1054 |
|
|
|
1055 |
pos($$input)=0;
|
|
|
1056 |
|
|
|
1057 |
|
|
|
1058 |
$self->YYParse(yylex => \&_Lexer, yyerror => \&_Error);
|
|
|
1059 |
|
|
|
1060 |
$nberr
|
|
|
1061 |
and _SyntaxError(2,"Errors detected: No output",-1);
|
|
|
1062 |
|
|
|
1063 |
@$parsed{ 'HEAD', 'TAIL', 'RULES', 'NTERM', 'TERM',
|
|
|
1064 |
'NULL', 'PREC', 'SYMS', 'START', 'EXPECT' }
|
|
|
1065 |
= ( $head, $tail, $rules, $nterm, $term,
|
|
|
1066 |
$nullable, $precterm, $syms, $start, $expect);
|
|
|
1067 |
|
|
|
1068 |
undef($input);
|
|
|
1069 |
undef($lexlevel);
|
|
|
1070 |
undef(@lineno);
|
|
|
1071 |
undef($nberr);
|
|
|
1072 |
undef($prec);
|
|
|
1073 |
undef($labelno);
|
|
|
1074 |
|
|
|
1075 |
undef($head);
|
|
|
1076 |
undef($tail);
|
|
|
1077 |
|
|
|
1078 |
undef($syms);
|
|
|
1079 |
undef($token);
|
|
|
1080 |
undef($term);
|
|
|
1081 |
undef($nterm);
|
|
|
1082 |
undef($rules);
|
|
|
1083 |
undef($precterm);
|
|
|
1084 |
|
|
|
1085 |
undef($start);
|
|
|
1086 |
undef($nullable);
|
|
|
1087 |
undef($expect);
|
|
|
1088 |
|
|
|
1089 |
$parsed
|
|
|
1090 |
}
|
|
|
1091 |
|
|
|
1092 |
|
|
|
1093 |
1;
|