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| author | P. J. McDermott <pj@pehjota.net> | 2016-02-28 15:08:43 (EST) |
|---|---|---|
| committer | P. J. McDermott <pj@pehjota.net> | 2016-02-28 15:08:43 (EST) |
| commit | 405ff1ffad7310a04ff104284d600a066d6dd925 (patch) | |
| tree | 9c64d2b7aa04bcc818d52b759a5d10f61ff521a2 /eshtrans/backend | |
| parent | 96716798e04aded65e9023c40fa8492350cf212d (diff) | |
| download | eggshell-405ff1ffad7310a04ff104284d600a066d6dd925.zip eggshell-405ff1ffad7310a04ff104284d600a066d6dd925.tar.gz eggshell-405ff1ffad7310a04ff104284d600a066d6dd925.tar.bz2 | |
eshtrans/backend: Implement "nostack" pragma
Diffstat (limited to 'eshtrans/backend')
| -rw-r--r-- | eshtrans/backend/codegen.esh | 41 |
1 files changed, 30 insertions, 11 deletions
diff --git a/eshtrans/backend/codegen.esh b/eshtrans/backend/codegen.esh index 9e95956..ddd466b 100644 --- a/eshtrans/backend/codegen.esh +++ b/eshtrans/backend/codegen.esh @@ -23,6 +23,7 @@ sbufc= sc= tu_id= static_fn_n= +pragma_nostack=false sgetc() { @@ -50,12 +51,14 @@ codegen_sub() shift 1 local print_spc= local ionum= + local pragma= local fname= local static= local static_fname= print_spc=false ionum=false + pragma=false fname='' static=false static_fname=false @@ -83,19 +86,25 @@ codegen_sub() ionum=false fi - # Function names - case "${t%${US}*}" in T_FNAME) - fname="${t}" - ;; - esac - - # State machine for static variables and functions case "${t%${US}*}" in + T_USE) + pragma=true + continue + ;; + T_FNAME) + fname="${t}" + ;; T_STATIC) static=true continue ;; esac + if ${pragma}; then + pragma=false + eval "pragma_${t#*${US}}=true" + continue + fi + # State machine for static variables and functions if ${static}; then static=false case "${t%${US}*}" in @@ -125,14 +134,24 @@ codegen_sub() # Function start/end tokens case "${t%${US}*}" in T_FN_START) - printf '__fn_start %s %s;' \ - "${tu_id}" "${fname#*${US}}" + if ! ${pragma_nostack}; then + printf '__fn_start %s %s;' \ + "${tu_id}" "${fname#*${US}}" + else + printf ':;' + fi ;; T_FN_END) - printf '__fn_end;' + if ! ${pragma_nostack}; then + printf '__fn_end;' + else + printf ':;' + fi ;; T_RETURN) - printf '__fn_end; ' + if ! ${pragma_nostack}; then + printf '__fn_end; ' + fi ;; esac |