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1 *if_mzsch.txt* For Vim version 7.0aa. Last change: 2004 Jul 05
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4 VIM REFERENCE MANUAL by Sergey Khorev
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6
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7 The MzScheme Interface to Vim *mzscheme* *MzScheme*
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8
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9 1. Commands |mzscheme-commands|
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10 2. Examples |mzscheme-examples|
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11 3. Threads |mzscheme-threads|
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12 4. The Vim access procedures |mzscheme-vim|
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13
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14 {Vi does not have any of these commands}
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15
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16 The MzScheme interface is available only if Vim was compiled with the
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17 |+mzscheme| feature.
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18
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19 Based on the work of Brent Fulgham.
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20
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21 For downloading MzScheme and other info:
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22 http://www.plt-scheme.org/software/mzscheme/
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23
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24 ==============================================================================
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25 1. Commands *mzscheme-commands*
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26
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27 *:mzscheme* *:mz*
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28 :[range]mz[scheme] {stmt}
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29 Execute MzScheme statement {stmt}. {not in Vi}
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30
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31 :[range]mz[scheme] << {endmarker}
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32 {script}
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33 {endmarker}
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34 Execute inlined MzScheme script {script}.
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35 Note: This command doesn't work if the MzScheme
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36 feature wasn't compiled in. To avoid errors, see
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37 |script-here|.
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38
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39 *:mzfile* *:mzf*
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40 :[range]mzf[ile] {file} Execute the MzScheme script in {file}. {not in Vi}
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41 All statements are executed in the namespace of the
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42 buffer that was current during :mzfile start.
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43 If you want to access other namespaces, use
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44 'parameterize'.
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45
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46 All of these commands do essentially the same thing - they execute a piece of
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47 MzScheme code, with the "current range" set to the given line
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48 range.
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49
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50 In the case of :mzscheme, the code to execute is in the command-line.
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51 In the case of :mzfile, the code to execute is the contents of the given file.
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52
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53 Each buffer has its own MzScheme namespace. Global namespace is bound to
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54 the `global-namespace' value from the 'vimext' module.
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55 MzScheme interface defines exception exn:vim, derived from exn.
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56 It is raised for various Vim errors.
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57
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58 During compilation, the MzScheme interface will remember the current MzScheme
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59 collection path. If you want to specify additional paths use the
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60 'current-library-collection-paths' parameter. E.g., to cons the user-local
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61 MzScheme collection path: >
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62 :mz << EOF
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63 (current-library-collection-paths
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64 (cons
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65 (build-path (find-system-path 'addon-dir) (version) "collects")
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66 (current-library-collection-paths)))
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67 EOF
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68 <
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69
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70 All functionality is provided through module vimext.
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71
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72 The exn:vim is available without explicit import.
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73
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74 To avoid clashes with MzScheme, consider using prefix when requiring module,
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75 e.g.: >
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76 :mzscheme (require (prefix vim- vimext))
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77 <
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78 All the examples below assume this naming scheme. Note that you need to do
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79 this again for every buffer.
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80
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81 The auto-instantiation can be achieved with autocommands, e.g. you can put
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82 something like this in your .vimrc: >
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83 au VimEnter,BufNew,BufNewFile,BufAdd,BufReadPre *
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84 \:mz (require (prefix vim- vimext)
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85 <
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86
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87 The global namespace just instantiated this module with the prefix "vimext:".
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88
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89 ==============================================================================
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90 2. Examples *mzscheme-examples*
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91 >
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92 :mzscheme (display "Hello")
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93 :mzscheme (vim-set-buff-line 10 "This is line #10")
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94 <
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95 Inline script usage: >
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96 function! <SID>SetFirstLine()
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97 :mz << EOF
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98 (display "!!!")
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99 (vim-set-buff-line 1 "This is line #1")
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100 (vim-beep)
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101 EOF
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102 endfunction
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103
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104 nmap <F9> :call <SID>SetFirstLine() <CR>
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105 <
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106 File execution: >
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107 :mzfile supascript.scm
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108 <
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109 Accessing the current buffer namespace from an MzScheme program running in
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110 another buffer within |:mzfile|-executed script : >
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111 ; Move to the window below
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112 (vim-command "wincmd j")
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113 ; execute in the context of buffer, to which window belongs
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114 ; assume that buffer has 'textstring' defined
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115 (parameterize ((current-namespace
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116 (vim-get-buff-namespace (vim-curr-buff))))
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117 (eval '(vim-set-buff-line 1 textstring)))
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118 <
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119
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120 ==============================================================================
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121 3. Threads *mzscheme-threads*
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122
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123 The MzScheme interface supports threads. They are independent from OS threads,
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124 thus scheduling is required. The option 'mzquantum' determines how often
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125 Vim should poll for available MzScheme threads.
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126 NOTE
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127 Thread scheduling in the console version of Vim is less reliable than in the
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128 GUI version.
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129
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130 ==============================================================================
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131 5. VIM Functions *mzscheme-vim*
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132
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133 *mzscheme-vimext*
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134 The 'vimext' module provides access to procedures defined in the MzScheme
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135 interface.
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136
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137 Common
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138 ------
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139 (command {command-string}) Perform the vim ":Ex" style command.
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140 (eval {expr-string}) Evaluate the vim command string.
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141 NOTE clashes with MzScheme eval
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142 (range-start) Start/End of the range passed with
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143 (range-end) the Scheme command.
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144 (beep) beep
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145 (get-option {option-name} [buffer-or-window]) Get Vim option value (either
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146 local or global, see set-option).
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147 (set-option {string} [buffer-or-window])
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148 Set a Vim option. String must have option
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149 setting form (like optname=optval, or
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150 optname+=optval, etc.) When called with
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151 {buffer} or {window} the local option will
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152 be set. The symbol 'global can be passed
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153 as {buffer-or-window}. Then |:setglobal|
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154 will be used.
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155 global-namespace The MzScheme main namespace.
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156
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157 Buffers *mzscheme-buffer*
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158 -------
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159 (buff? {object}) Is object a buffer?
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160 (buff-valid? {object}) Is object a valid buffer? (i.e.
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161 corresponds to the real Vim buffer)
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162 (get-buff-line {linenr} [buffer])
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163 Get line from a buffer.
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164 (set-buff-line {linenr} {string} [buffer])
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165 Set a line in a buffer. If {string} is #f,
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166 the line gets deleted. The [buffer]
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167 argument is optional. If omitted, the
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168 current buffer will be used.
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169 (get-buff-line-list {start} {end} [buffer])
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170 Get a list of lines in a buffer. {Start}
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171 and {end} are 1-based. {Start} is
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172 inclusive, {end} - exclusive.
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173 (set-buff-line-list {start} {end} {string-list} [buffer])
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174 Set a list of lines in a buffer. If
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175 string-list is #f or null, the lines get
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176 deleted. If a list is shorter than
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177 {end}-{start} the remaining lines will
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178 be deleted.
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179 (get-buff-name [buffer]) Get a buffer's text name.
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180 (get-buff-num [buffer]) Get a buffer's number.
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181 (get-buff-size [buffer]) Get buffer line count.
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182 (insert-buff-line-list {linenr} {string/string-list} [buffer])
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183 Insert a list of lines into a buffer after
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184 {linenr}. If {linenr} is 0, lines will be
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185 inserted at start.
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186 (curr-buff) Get the current buffer. Use procedures
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187 from `vimcmd' module to change it.
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188 (buff-count) Get count of total buffers in the editor.
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189 (get-next-buff [buffer]) Get next buffer.
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190 (get-prev-buff [buffer]) Get previous buffer. Return #f when there
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191 are no more buffers.
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192 (open-buff {filename}) Open a new buffer (for file "name")
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193 (get-buff-by-name {buffername}) Get a buffer by its filename or #f
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194 if there is no such buffer.
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195 (get-buff-by-num {buffernum}) Get a buffer by its number (return #f if
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196 there is no buffer with this number).
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197 (get-buff-namespace [buffer]) Get buffer namespace.
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198
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199 Windows *mzscheme-window*
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200 ------
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201 (win? {object}) Is object a window?
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202 (win-valid? {object}) Is object a valid window (i.e. corresponds
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203 to the real Vim window)?
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204 (curr-win) Get the current window.
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205 (win-count) Get count of windows.
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206 (get-win-num [window]) Get window number.
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207 (get-win-by-num {windownum}) Get window by its number.
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208 (get-win-buffer [window]) Get the buffer for a given window.
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209 (get-win-height [window])
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210 (set-win-height {height} [window]) Get/Set height of window.
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211 (get-win-width [window])
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212 (set-win-width {width} [window])Get/Set width of window.
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213 (get-win-list [buffer]) Get list of windows for a buffer.
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214 (get-cursor [window]) Get cursor position in a window as
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215 a pair (linenr . column).
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216 (set-cursor (line . col) [window]) Set cursor position.
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217
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218 ======================================================================
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219 vim:tw=78:ts=8:sts=4:ft=help:norl:
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