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impls/bash: Minor changes to make it run under OSH
OSH is a bash-compatible shell: https://www.oilshell.org/ reader.sh: - Put the constant regex pattern in a string literal. This simplifies it by removing mixed regex vs. shell quoting, and implicit concatenation with $'\n'. This is suggested by the bash manual: https://www.gnu.org/software/bash/manual/bash.html#Conditional-Constructs "Storing the regular expression in a shell variable is often a useful way to avoid problems with quoting characters that are special to the shell." - Initialize __reader_tokens as an array, not a string. https://www.oilshell.org/release/0.8.pre6/doc/known-differences.html#values-are-tagged-with-types-not-cells env.sh: Simplify quoting in 'eval' expressions. This quotes associative array keys, which is required by OSH to avoid dynamic parsing. https://www.oilshell.org/release/0.8.pre6/doc/known-differences.html#strings-vs-bare-words-in-array-indices http://www.oilshell.org/blog/2016/10/20.html core.sh: Quote associative array keys. '<' and '>' are shell operators and OSH doesn't have a special case when inside []. ---- With this change, OSH can run tests just like bash, e.g.: $ osh impls/bash/stepA_mal.sh tests/step4_if_fn_do.mal ---- Test results are the same before and after this change: $ NO_DOCKER=1 ./.travis_test.sh test bash FAILURES: SOFT FAILED TEST (line 295): (f (+ 1 1)) -> ['',true]: Expected : '.*\ntrue' Got : '(f (+ 1 1))\nfalse' TEST RESULTS (for ../tests/stepA_mal.mal): 1: soft failing tests 0: failing tests 106: passing tests 107: total tests
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@ -376,10 +376,10 @@ declare -A core_ns=(
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[readline]=readline
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[read-string]=read_string
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[slurp]=slurp
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[<]=num_lt
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[<=]=num_lte
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[>]=num_gt
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[>=]=num_gte
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['<']=num_lt
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['<=']=num_lte
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['>']=num_gt
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['>=']=num_gte
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[+]=num_plus
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[-]=num_minus
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[__STAR__]=num_multiply
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@ -48,7 +48,7 @@ ENV_FIND () {
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r="${1}"
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else
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local obj="${ANON["${1}"]}"
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eval local outer="\${${obj}["__outer__"]}"
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eval 'local outer=${'${obj}'["__outer__"]}'
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if [[ "${outer}" && "${outer}" != "${__nil}" ]]; then
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ENV_FIND "${outer}" "${2}"
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else
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@ -66,7 +66,7 @@ ENV_GET () {
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local key="${ANON["${2}"]}"
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if [[ "${r}" ]]; then
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local obj="${ANON["${env}"]}"
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eval r="\${${obj}["${key}"]}"
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eval 'r=${'${obj}'["'${key}'"]}'
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else
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_error "'${key}' not found"
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fi
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@ -103,6 +103,8 @@ READ_FORM () {
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esac
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}
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TOKEN_PAT=$'^^([][{}\\(\\)^@])|^(~@)|^("(\\\\.|[^\\"])*"?)|^(;[^\n]*)|^([~\'`])|^([^][ ~`\'";{}\\(\\)^@,\n]+)|^(,)|^([[:space:]]+)'
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# Returns __reader_tokens as an indexed array of tokens
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TOKENIZE () {
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local data="${*}"
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@ -114,14 +116,14 @@ TOKENIZE () {
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local str=
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__reader_idx=0
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__reader_tokens=
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declare -a -g __reader_tokens=() # global array
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while true; do
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if (( ${#str} < ( chunksz / 2) )) && (( chunk < datalen )); then
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str="${str}${data:${chunk}:${chunksz}}"
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chunk=$(( chunk + ${chunksz} ))
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fi
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(( ${#str} == 0 )) && break
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[[ "${str}" =~ ^^([][{}\(\)^@])|^(~@)|^(\"(\\.|[^\\\"])*\"?)|^(;[^$'\n']*)|^([~\'\`])|^([^][ ~\`\'\";{}\(\)^@\,$'\n']+)|^(,)|^([[:space:]]+) ]]
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[[ "${str}" =~ ${TOKEN_PAT} ]]
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token=${BASH_REMATCH[0]}
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str="${str:${#token}}"
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token="${token}"
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