X-Git-Url: https://thelambdalab.xyz/gitweb/index.cgi?p=forth.jl.git;a=blobdiff_plain;f=src%2Fforth.jl;h=4c81dc35b59f305078a7a2a08f4e95927b640b8b;hp=e391d0053e210231567879fabeac419fe85ce420;hb=2de79279a0f7157a41c0f32674ba96f56cb1b02f;hpb=ef54433308b352a75aeb6026da1795495d61860c diff --git a/src/forth.jl b/src/forth.jl index e391d00..4c81dc3 100644 --- a/src/forth.jl +++ b/src/forth.jl @@ -1,6 +1,6 @@ module forth -import Base.REPLCompletions +import Base.REPLCompletions, Base.invokelatest # VM mem size size_mem = 1000000 # 1 mega-int @@ -123,7 +123,7 @@ function callPrim(addr::Int64) if addr >=0 || -addr>length(primitives) error("Attempted to execute non-existent primitive at address $addr.") else - primitives[-addr]() + invokelatest(primitives[-addr]) end end getPrimName(addr::Int64) = primNames[-addr] @@ -501,7 +501,7 @@ end) XOR_CFA = defPrimWord("XOR", () -> begin b = popPS() a = popPS() - pushPS(a $ b) + pushPS(xor(a, b)) return NEXT end) @@ -678,13 +678,11 @@ READ_LINE_CFA = defPrimWord("READ-LINE", () -> begin addr = popPS() fh = openFiles[fid] - line = readline(fh) + line = readline(fh, chomp=false) eofFlag = endswith(line, '\n') ? 0 : -1 line = chomp(line) - #println("Reading: $line"); - putString(line, addr, maxSize) pushPS(length(line)) @@ -694,6 +692,25 @@ READ_LINE_CFA = defPrimWord("READ-LINE", () -> begin return NEXT end) +READ_FILE_CFA = defPrimWord("READ-FILE", () -> begin + fid = popPS() + size = popPS() + addr = popPS() + + fh = openFiles[fid] + + string = join(map(x -> Char(x), read(fh, size)), "") + + eofFlag = length(string) == size ? 0 : -1 ; + + putString(string, addr, length(string)) + + pushPS(length(string)) + pushPS(eofFlag) + + return NEXT +end) + EMIT_CFA = defPrimWord("EMIT", () -> begin print(Char(popPS())) @@ -1110,7 +1127,7 @@ end, flags=F_IMMED) HIDDEN_CFA = defPrimWord("HIDDEN", () -> begin lenAndFlagsAddr = mem[mem[CURRENT]+1] + 1 - mem[lenAndFlagsAddr] = mem[lenAndFlagsAddr] $ F_HIDDEN + mem[lenAndFlagsAddr] = xor(mem[lenAndFlagsAddr], F_HIDDEN) return NEXT end) @@ -1130,7 +1147,7 @@ SEMICOLON_CFA = defWord(";", IMMEDIATE_CFA = defPrimWord("IMMEDIATE", () -> begin lenAndFlagsAddr = mem[mem[CURRENT]+1] + 1 - mem[lenAndFlagsAddr] = mem[lenAndFlagsAddr] $ F_IMMED + mem[lenAndFlagsAddr] = xor(mem[lenAndFlagsAddr], F_IMMED) return NEXT end, flags=F_IMMED)