Mercurial > repos > rhope
annotate lex.rhope @ 131:0a4682be2db2
Modify lexer and new parser to work in compiler
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Fri, 05 Nov 2010 02:43:34 +0000 |
| parents | 73e978d590c7 |
| children | 1f238280047f |
| rev | line source |
|---|---|
| 2 | 1 |
| 2 Blueprint Token | |
| 3 { | |
| 4 Type | |
| 5 Raw Text | |
| 6 Text | |
| 7 } | |
| 8 | |
| 9 Token[type,raw,text:out] | |
| 10 { | |
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Modify lexer and new parser to work in compiler
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11 out <- [[[Build[Token()]]Type <<[type]]Raw Text <<[raw]]Text <<[text] |
| 2 | 12 } |
| 13 | |
| 14 _Type Match[val, test type, type:out] | |
| 15 { | |
| 16 If[[test type]=[type]] | |
| 17 { | |
| 18 out <- Yes | |
| 19 }{ | |
| 20 out <- Val[val] | |
| 21 } | |
| 22 } | |
| 23 | |
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24 As List[val:out] |
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0a4682be2db2
Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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25 { |
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26 [(List(),List Leaf())]Find[=[?, Blueprint Of[val]]] |
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0a4682be2db2
Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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27 { |
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Mike Pavone <pavone@retrodev.com>
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28 out <- val |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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29 }{ |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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30 out <- [()]Append[val] |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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31 } |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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32 } |
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Mike Pavone <pavone@retrodev.com>
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33 |
| 2 | 34 Type Match@Token[token,type:match,nomatch] |
| 35 { | |
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36 match,nomatch <- If[Fold[_Type Match[?,?, [token]Type >>], No, As List[type]]] |
| 2 | 37 } |
| 38 | |
| 39 String Literal[string, raw string, escapes, text, simple tokens, token list:out] | |
| 40 { | |
| 41 first,rest <- [text]Slice[1] | |
| 42 If[[first] = ["\""]] | |
| 43 { | |
| 44 out <- _Lex[rest, [first]Slice[0], simple tokens, [token list]Append[Token["String Literal", raw string, string]]] | |
| 45 }{ | |
| 46 next raw <- [raw string]Append[first] | |
| 47 If[[first] = ["\\"]] | |
| 48 { | |
| 49 second,next text <- [rest]Slice[1] | |
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50 char <- [escapes]Index[String[second]] {} |
| 2 | 51 { |
| 52 char <- Val[second] | |
| 53 } | |
| 54 next string <- [string]Append[char] | |
| 55 }{ | |
| 56 next string <- [string]Append[first] | |
| 57 next text <- Val[rest] | |
| 58 } | |
| 59 out <- String Literal[next string, next raw, escapes, next text, simple tokens, token list] | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 Line Comment[start comment, text, simple tokens, token list:out] | |
| 64 { | |
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65 comment,,next text <- [text]Partition["\n"] {} {} {} |
| 2 | 66 { |
| 67 next text <- "" | |
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68 comment <- Val[text] |
| 2 | 69 } |
| 70 out <- _Lex[next text, [next text]Slice[0], simple tokens, [token list]Append[Token["Line Comment", [start comment]Append[comment], comment]]] | |
| 71 | |
| 72 } | |
| 73 | |
| 74 Block Comment[comment,raw comment, depth, text, simple tokens, token list:out] | |
| 75 { | |
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76 Print[["Block Comment: Depth="]Append[String[depth]]] |
| 2 | 77 If[[depth] > [0]] |
| 78 { | |
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79 chunk, delim, next text <- [text]Partition[("/*","*/")] {} {} {} |
| 2 | 80 { |
| 81 next text <- "" | |
| 82 delim <- "" | |
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83 chunk <- Val[text] |
| 2 | 84 } |
| 85 If[[delim] = ["/*"]] | |
| 86 { | |
| 87 next depth <- [depth] + [1] | |
| 88 }{ | |
| 89 next depth <- [depth] - [1] | |
| 90 } | |
| 91 If[[next depth] = [0]] | |
| 92 { | |
| 93 next comment <- [comment]Append[chunk] | |
| 94 }{ | |
| 95 next comment <- [[comment]Append[chunk]]Append[delim] | |
| 96 } | |
| 97 out <- Block Comment[next comment, [[raw comment]Append[chunk]]Append[delim], next depth, next text, simple tokens, token list] | |
| 98 }{ | |
| 99 out <- _Lex[text, [raw comment]Slice[0], simple tokens, [token list]Append[Token["Block Comment", raw comment, comment]]] | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 Numeric Literal[literal, text, simple tokens, token list:out] | |
| 104 { | |
| 105 first,rest <- [text]Slice[1] | |
| 106 If[[first] In ["01234567890.x"]] | |
| 107 { | |
| 108 out <- Numeric Literal[[literal]Append[first], rest, simple tokens, token list] | |
| 109 }{ | |
| 110 out <- _Lex[text, [first]Slice[0], simple tokens, [token list]Append[Token["Numeric Literal", literal, literal]]] | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 Add Token[token, text, simple tokens, token list:out] | |
| 115 { | |
| 116 out <- _Lex[text, [text]Slice[0], simple tokens, [token list]Append[token]] | |
| 117 } | |
| 118 | |
| 119 _Lex[text, symbol, simple tokens,token list:out] | |
| 120 { | |
| 121 If[[[text]Length] > [0]] | |
| 122 { | |
| 123 first,rest <- [text]Slice[1] | |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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124 [simple tokens]Index[String[first]] |
| 2 | 125 { |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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126 token worker <- Val[Add Token[Token[~, first, ""], rest, ?]] |
| 2 | 127 }{ |
| 128 If[[first] = ["\""]] | |
| 129 { | |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
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130 escapes <- [[[Dictionary[]]Set["n","\n"]]Set["r","\r"]]Set["t","\t"] |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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diff
changeset
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131 token worker <- Val[String Literal[[first]Slice[0], first, escapes, rest, ?]] |
| 2 | 132 //out <- String Literal["", first, rest, simple tokens, token list, escapes] |
| 133 }{ | |
| 134 second,second rest <- [rest]Slice[1] | |
| 135 If[[[first] = ["<"]] And [[second]=["-"]]] | |
| 136 { | |
| 137 [first]Append[second] | |
| 138 { | |
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Mike Pavone <pavone@retrodev.com>
parents:
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139 token worker <- Val[Add Token[Token["Assignment", ~, ~], second rest, ?]] |
| 2 | 140 } |
| 141 }{ | |
| 142 | |
| 143 If[[[first] = ["/"]] And [[second] = ["*"]]] | |
| 144 { | |
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parents:
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145 token worker <- Val[Block Comment[[first]Slice[0], [first]Append[second], 1, second rest, ?]] |
| 2 | 146 //out <- Block Comment[next text, simple tokens, token list, 1] |
| 147 }{ | |
| 148 If[[[first] = ["/"]] And [[second] = ["/"]]] | |
| 149 { | |
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150 token worker <- Val[Line Comment[[first]Append[second], second rest, ?]] |
| 2 | 151 //out <- Line Comment["", [first]Append[second], next text, simple tokens, token list] |
| 152 }{ | |
| 153 If[[[first]In["0123456789"]] Or [[[first] = ["-"]] And [[second]In["0123456789"]]]] | |
| 154 { | |
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Mike Pavone <pavone@retrodev.com>
parents:
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155 token worker <- Val[Numeric Literal[first, rest, ?]] |
| 2 | 156 //out <- Numeric Literal[text, simple tokens, token list] |
| 157 }{ | |
| 158 out <- _Lex[rest, [symbol]Append[first], simple tokens, token list] | |
| 159 } | |
| 160 } | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 } | |
| 165 } | |
| 166 Val[token worker] | |
| 167 { | |
| 168 trimmed <- Trim[symbol, " \t\r\n"] | |
| 169 If[[trimmed] = [""]] | |
| 170 { | |
| 171 next list <- Val[token list] | |
| 172 }{ | |
| 173 next list <- [token list]Append[Token["Symbol", trimmed, trimmed]] | |
| 174 } | |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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175 out <- [token worker]Call[simple tokens, next list] |
| 2 | 176 } |
| 177 }{ | |
| 178 out <- token list | |
| 179 } | |
| 180 } | |
| 181 | |
| 182 Lex[text:out] | |
| 183 { | |
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Modify lexer and new parser to work in compiler
Mike Pavone <pavone@retrodev.com>
parents:
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diff
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184 simple tokens <- [[[[[[[[[[[Dictionary[] |
| 2 | 185 ]Set["{", "Block Begin"] |
| 186 ]Set["}", "Block End"] | |
| 187 ]Set["(", "List Begin"] | |
| 188 ]Set[")", "List End"] | |
| 189 ]Set["[", "Args Begin"] | |
| 190 ]Set["]", "Args End"] | |
| 191 ]Set[",", "List Separator"] | |
| 192 ]Set[":", "Name Separator"] | |
| 193 ]Set["@", "Method Separator"] | |
| 194 ]Set["`", "Binary Operation"] | |
| 195 ]Set["\n", "Newline"] | |
| 196 out <- _Lex[text, [text]Slice[0], simple tokens, ()] | |
| 197 } |